A BOOK EDGE PRINTING DEVICE

Abstract

 The invention relates to a book edge printing device, comprising a turntable (9) driven by a power unit and a multi-station fixture assembly mounted on the turntable. The multi-station fixture assembly comprises a chassis (100) and multiple clamping assemblies (200) connected to the chassis and distributed around the center of the chassis; The clamping assembly comprises a fixed clamping plate (2), a push plate (3), and a straight-travel driving mechanism (4), with the fixed clamping plate vertically and fixedly connected to the chassis. The push plate is parallel to the fixed clamping plate, and the center (O) of the chassis is on the same side of the plane where the fixed clamping plate lies as the plane where the push plate lies. The plane where the push plate lies is closer to the center of the chassis than the plane where the fixed clamping plate lies. The push plate is between the straight-travel driving mechanism and the fixed clamping plate. The straight-travel driving mechanism is connected to the push plate near the edge of the chassis. The straight-travel driving mechanism can drive the push plate towards or away from the fixed clamping plate. The invention optimizes the layout of the push plate and the fixed clamping plate, greatly improving the utilization rate of space and benefitting the miniaturization of the equipment.

Description

TECHNICAL FIELD

[0001] The invention relates to a mechanical equipment, in particular to a printing device, more particularly to a book edge printing device.

BACKGROUND ART

[0002] Usually, when a book is produced, the edges of the book block need cutting and the book edges after being cut have the paper color. In order to beautify the book edges, they are coated or bushed with a single color, for example, by means of gilt-edging. To print patterns and patterns on book edges, the prior art has disclosed an overprinting method, in which multi colors are applied to put colored-patterns on book edges, and a modified UV digital inkjet method.

[0003] The existing book edge printing machine is based on the spine as the positioning surface for book edge printing. However, when multiple books with different heights are printed at the same time, the printing surfaces of the book edges are uneven, thus easily leading to unstable printing quality. CN111572213A discloses a book edge printing device, which solves to some extent the problem of unstable printing quality when multiple books are printed at the same time, but the device also has defects in that when being placed with larger sized books, the rotating mechanism provided in the center will interfere with the books, resulting in these larger books being unable to be printed. In order to avoid this interference, it is necessary to design the diameter of the turntable to be larger, and the larger diameter leads to greater centrifugal force, which has an adverse effect on the firm installation of the equipment, and the power output will also be significantly increased.

SUMMARY OF INVENTION

[0004] The invention provides a book edge printing device to solve at least one of the deficiencies of the prior art.

[0005] The book edge printing device according to the present invention comprises a turntable driven by a power unit and a multi-station fixture assembly mounted on the turntable. The multi-station fixture assembly comprises a chassis and multiple clamping assemblies connected to the chassis and distributed around the center of the chassis; Each clamping assembly comprises a fixed clamping plate, a push plate and a straight-travel driving mechanism. The clamping plate is fixedly and vertically connected to the chassis; The push plate is parallel to the fixed clamping plate, and the center of the chassis is on the same side of the plane where the fixed clamping plate is provided and the plane where the push plate is provided. The plane where the push plate is provided is closer to the center of the chassis than the plane where the fixed clamping plate is provided. The push plate is provided between the straight-travel driving mechanism and the fixed clamping plate. The straight-travel driving mechanism is close to the edge of the chassis and connected to the push plate. The straight-travel driving mechanism drives the push plate move towards or away from to the fixed clamping plate.

[0006] In some embodiments, the chassis consists of four baseplates, each of which is provided with a said clamping assembly; The baseplate is L-shaped and includes a connecting portion and a cantilever part, with the four connecting parts distributed around the center of the baseplate, the adjacent connecting parts connected to each other, the fixed clamping plates fixedly connected to the connecting part, and the straight-travel driving mechanism arranged on the cantilever part.

[0007] In some embodiments, the chassis is provided with multiple slot holes, at least portion of them provided between the fixed clamping plate and the pusher plate.

[0008] In some embodiments, the end of the connecting portion away from the cantilever portion is provided with bridge members, which are detachably connected to the adjacent connecting portion by fasteners.

[0009] In some embodiments, the multi-station fixture assembly includes a horizontal reinforcing rib and a vertical reinforcing rib, both connected to the baseplate, the horizontal reinforcing rib is provided on the side of the baseplate opposite to the straight-travel driving mechanism, and the vertical reinforcing rib and the horizontal reinforcing rib are provided on the same side of the baseplate and perpendicular to each other.

[0010] In some embodiments, the straight-travel driving mechanism includes a mounting plate, a linear module and a connection member, where in the mounting plate is fixed to the chassis, the linear module provided on the mounting plate, one end of the connection member connected to the push plate while the other end connected to the linear module.

[0011] In some embodiments, the straight-travel driving mechanism also includes a first slide rail and a second slide rail parallel to each other, the first slide rail and the second slide rail are both provided with a slide block, the first slide rail and second slide rail are connected to the mounting plate, the linear module is provided between the first slide rail and the second slide rail, and the connection member is connected to the slide block.

[0012] Furtherly, in some embodiments, the straight-travel driving mechanism is parallelly provided with a first side wall and a second side wall, between which the first slide rail, the linear module and the second slide rail are provided and which fixed to the connection member and/or the slide block.

[0013] In some embodiments, the clamping assembly also includes a grating scale sensor, which is fixed to the chassis and used to measure the displacement of the push plate.

[0014] Compared to the prior art, the present invention optimizes the layout of the push plates and the fixed clamping plates, whereby the overall size of the multi-station fixture assembly according to the present invention is reduced by about 25%, greatly improving the utility rate of space and better miniaturizing the equipment. In addition, the space for placing books between the push plate and the fixed clamping plate can be fully utilized, not constrained by the rotating mechanism, thus the multi-station fixture assembly can be used to print larger books.

BRIEF DESCRIPTION OF DRAWINGS

[0015] In the drawings, which are not necessarily drawn to scale, like numerals may describe similar components in different views. Like numerals having different letter suffixes may represent different instances of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed in the present document.

Figure 1 is the main view of a multi-station fixture assembly in an example of the invention.

FIG. 2 is a stereogram of the baseplate and the clamping assembly after assembled together in an example of the invention.

Figure 3 is the main view of Figure 2.

Figure 4 is an upward view of Figure 2.

Figure 5 shows the structure in Figure 2 after removing the connection member.

FIG. 6 is a diagram of the multi-station clamp of an example of the invention when assembled on a turntable.

FIG. 7 shows an example of multi-station fixture assembly according to the invention in use.

[0016] The drawings are marked as follows:
1. baseplate; 101, connecting part; 1011, slot hole; 102, cantilever part; 2, fixed clamping plate; 3, push plate; 4, straight-travel driving mechanism ; 401, mounting plate; 402, linear module; 4021, motor; 4022, shaft coupler; 4023, lead screw; 4024, first bearing seat; 4025, second bearing seat; 4026, slide table; 403, connection member; 404, first slide rail; 405, second slide rail; 406, slide block; 407, first side wall; 408, second side wall; 5, bridge member; 6, horizontal reinforcing rib; 7, vertical reinforcing rib; 8, grating scale sensor; 9. turntable; 10, lifting table; 11, cleaning device; 12, printing device; 13. books; 100, chassis; 200, clamping assembly.

DESCRIPTION OF EMBODIMENTS

[0017] The following is a further detailed description of the implementation of this application in combination with the attached drawings and examples. The detailed description and drawings are used to illustrate the principles of the present application by example, but shall not be used to limit the scope of the present application, which may be realized in many different forms, not limited to the specific embodiments disclosed herein. These different forms should also fall within the scope defined by the claims.

[0018] It should be noted that, unless otherwise specified, the relative arrangement of parts and steps, composition of materials, numerical expressions and values described in these embodiments should be interpreted as merely exemplary and not as a limitation.

[0019] It should be noted that in the description of this application, "multiple" means greater than or equal to two unless otherwise stated; The terms "up", "down", "left", "right", "inside", "outside", etc. indicate orientation or position relations only for the purpose of facilitating and simplifying description of this application, and do not indicate or imply that the device or element referred to must have a particular orientation, construction and operation in a particular orientation, and therefore shall not be construed as a limitation of this application. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0020] In addition, the use of "first", "second", and similar terms in this application does not imply any order, quantity, or importance, but rather serves to distinguish between different parts. "Vertical" is not strictly vertical, but within the margin of error. "Parallel" is not strictly parallel, but within the error range. Words such as "include" or "contain" mean that the element before the word covers the element listed after the word, and does not exclude the possibility of covering other elements as well.

[0021] It should also be noted that in the description of this application, unless otherwise expressly specified and limited, the terms "install", "connect", "connected to" etc. shall be understood broadly. For example, may be fixed connection, may be removable connection, or integrated connection; It can be directly connected or indirectly connected through an intermediary. For the ordinarily skilled in the art, the specific meaning of the above terms in this application may be understood on a case-by-case basis. When a particular device is described as being between a first device and a second device, there may or may not be a mediator between that particular device and the first or second device.

[0022] As shown in FIG. 1, the multi-station fixture assembly in the embodiment comprises a chassis 100 and four clamping assemblies 200 connected to the chassis 100, and the four clamping assemblies 200 are distributed around the center of the chassis 100, as shown in FIG. 1, where point Zero is the center of the chassis 100. The clamping assembly 200 comprises a fixed clamping plate 2, a push plate 3, and a straight-travel driving mechanism 4. The fixed clamping plate 2 is perpendicular to the chassis 100, can be formed in one piece with chassis 100, or it can be fixed to chassis 100 by fasteners. In order to enhance the deformation resistance of the fixed clamping plate 2, reinforcement plates can be arranged on the side of the fixed clamping plate 2 away from the push plate 3. The push plate 3 is parallel to the fixed clamping plate 2, and the center of the chassis 100 is on the same side of the plane where the fixed clamping plate 2 is and the plane where the push-plate 3 is, and further the plane where the push-plate 3 is provided is nearer to the center of the chassis 100 than the plane of the fixed clamping plate 2 is to. As shown in Figure 1 and 7, a space for book 13 is formed between the fixed clamping plate 2 and the push plate 3, which extends towards the middle of the turntable 9, avoiding the center hole of chassis 100, allowing the height of the book space to exceed the height of center O. The push plate 3 is driven by the straight-travel driving mechanism 4 and can move back and forth relative to the fixed clamping plate 2.

[0023] In the present invention, the chassis 100 can be a whole piece. In the embodiment shown in Figure 1, chassis 100 is formed by connecting four baseplates 1, each provided with one said clamping assembly 200. The baseplate 1 is cut from sheet metal and is L-shaped seen from the front. The baseplate 1 comprises a connecting portion 101 and a cantilever portion 102 connected to each other. The four baseplates 1 have a total of four connecting parts 101, the four connecting parts 101 are distributed around the center of the baseplate 1, and adjacent connecting parts 101 are connected to each other, the fixed clamping plates 2 and the connecting parts 101 are fixed by bolts, and the straight-travel driving mechanism 4 is installed on the cantilever portion 102. The multi-station fixture assembly in this embodiment is easy to produce.

[0024] As shown in Figure 2 and Figure 3, the baseplate 1 is provided with multiple slot holes 1011, and at least part of the slot holes 1011 are provided in the connecting portion 101. These slot holes 1011 can reduce the weight of baseplate 1 and ensure that the baseplate 1 has the required structural strength.

[0025] As shown in Figure 3 and Figure 5, a bridge member 5 is provided at one end of the connecting portion 101 away from the cantilever portion 102, and is detachably connected to the adjacent connecting portion 101 by fasteners. Each connecting portion 101 is provided with two bridge members 5 at one end away from the cantilever portion 102, and the connecting portion 101 on the two adjacent baseplates 1 is connected by two bridge members 5.

[0026] As shown in Figures 4, 5 and 6, the back side of the baseplate 1 is provided with a horizontal reinforcing rib 6 and a vertical reinforcing rib 7. The straight-travel driving mechanism 4, the push plate 3 and the fixed clamping plate 2 are all provided in the front side of the baseplate 1, and the horizontal reinforcing rib 6 and the vertical reinforcing rib 7 are provided in the back side of the baseplate 1. The horizontal reinforcing rib 6 and vertical reinforcing rib 7 can improve the structural strength of the baseplate 1. A number of holes can also be provided in these reinforcing ribs through which the fasteners connect the chassis 100 to the turntable 9, providing a stronger locking force.

[0027] In the present invention, the straight-travel driving mechanism 4 comprises a mounting plate 401, a linear module 402 and a connection member 403. The mounting plate 401 can be cut from sheet metal, the mounting plate 401 is perpendicular to the chassis 100 and fixed to the chassis 100 by bolts. Linear module 402 is installed on the mounting board 401, one end of the connection member 403 is connected to the push plate 3, and the other end of the connection member 403 is connected to linear module 402. The linear module 402 drives the movement of the connection member 403, and then drives the movement of the push plate 3. As shown in Figure 5, the linear module 402 consists of a motor 4021, a shaft coupler 4022, a lead screw 4023, a first bearing seat 4024, a second bearing seat 4025 and a slide table 4026. The first bearing seat 4024 and the second bearing seat 4025 are installed on the mounting plate 401, one end of the lead screw 4023 rotatably connected to the first bearing seat 4024, and the other end of the lead screw 4023 rotatably connected to the second bearing seat 4025. The slide table 4026 is mounted on the lead screw 4023, the motor 4021 is connected to the mounting plate 401 and/or the baseplate 1 by a bracket, the lead screw 4023 is connected to the shaft of the motor 4021 by the shaft coupler 4022, and the connection member 403 is fixed to the slide table 4026 by a bolt. When the motor 4021 drives the screw 4023 rotating, the slide table 4026 slides on the screw 4023 driving the connection member 403 moving.

[0028] As shown in Figure 5, the straight-travel driving mechanism 4 also includes a first slide rail 404 and a second slide rail 405 parallel to each other. The first slide rail 404 and second slide rail 405 are provided with a slide block 406, the first slide rail 404 and the second slide rail 405 are connected to the mounting plate 401. The linear module 402 is provided between the first slide rail 404 and the second slide rail 405. The connection member 403 is connected to the slide block 406. The moving stability of the push plate 3 can be improved by setting the first slide rail 404 and the second slide rail 405.

[0029] As shown in Figure 5, the straight-travel driving mechanism 4 also includes a first side wall 407 and a second side wall 408 parallel to each other. The first slide rail 404, the linear module 402 and the second slide rail 405 are provided between the first side wall 407 and the second side wall 408. Both the first side wall 407 and the second side wall 408 are fixed to the connection member 403 and/or slider 406. As shown in Figure 2, the first slide rail 404, the second slide rail 405 and the linear module 402 are enclosed in an enclosed room formed by the connection member 403, the first side wall 407 and the second side wall 408, which effectively prevents dust from attaching to the first slide rail 404, the second slide rail 405 and the lead screw 4023 and prolongs the life-span of them.

[0030] As shown in Figure 5, the gripper assembly 200 also includes a grating scale sensor 8, which is fixed to the chassis 100 and used to measure the displacement of the push plate 3. The grating scale sensor 8 can also be replaced by other distance measuring sensor.

[0031] As shown in Figure 7, the chassis 100 is perpendicular to the horizontal plane, the chassis 100 is fixed on its back side with the turntable 9. The chassis 100 can be driven rotating by the turntable 9. A lifting table 10, a cleaning device 11 and a printing device 12 are orderly arranged around the chassis 100, wherein the lifting table 10 lies under the chassis 100. Thus, the positions of the four clamping assemblies 200 in the figure respectively correspond to the four stations in the process of book edge printing, the position of the clamping assembly 200 at the bottom as the loading station and the other three clamping assemblies 200 along the counterclockwise direction as successively the cleaning station, the printing station and the unloading station. The chassis 100 rotates 90 degrees counterclockwise each time to move the clamping assembly 200 to the next station.

[0032] At the loading station: Firstly, the lift table 10 ascends a distance, and then some books 13 to be printed are placed between the push plate 3 and the fixed clamping plate 2, with the edges to be printed facing the lifting table 10. Therefore, the book edges facing the lifting table 10 are even under the action of gravity. Next, the straight-travel driving mechanism 4 pushes the push plate 3 towards the fixed clamping plate 2 until the books 13 are stably clamped between the push plate 3 and the fixed clamping plate 2. Finally, the lifting table 10 descends to its default position, avoiding colliding with the multi-station fixture assembly while rotating.

[0033] At the cleaning station: The cleaning device 11 cleans the surface of the book edges to be printed to ensure that the surface of the book to be printed is clean.

[0034] At the printing station: The printing device 12 prints the desired pattern on the book edge.

[0035] At the unloading station: the straight-stroke driving mechanism 4 drives the push plate 3 away from the fixed clamping plate 2, and the books are smoothly stacked on the fixed clamping plate 2 under the action of gravity. Finally, the printed books can be removed by the mechanical arm or manually.

[0036] In the invention, by optimizing the layout of push plates 3 and fixed clamping plates 2 on chassis 100, the book space is deviated from the center of chassis 100, so that the diameter of the multi-station fixture assembly can be significantly reduced while retaining the same book space, which is conducive to the miniaturization of the equipment and greatly reduces the centrifugal force and power consumption during the operation of the equipment.

[0037] In other aspects of the above embodiments, the device of the invention has the advantages of being easy to manufacture, assemble and securely assemble.

[0038] So far, the embodiments of the present application have been described in detail. In order to avoid obscuring the idea of this application, some details that are known in the field are not described. The skilled in the art may well understand how to implement the technical scheme disclosed herein from the above description.

[0039] Although some specific embodiments of this application have been detailed, it should be understood by those skilled in the art that the above embodiments are for illustration purposes only and not to limit the scope of this application and may be modified or equivalent to some technical features substituted without deviating from the scope and spirit of this application. In particular, the technical features referred to in the various embodiments can be combined in any manner provided that there is no structural conflict.

Claims

1. A book edge printing device, characterized by comprising a turntable (9) driven by a power unit and a multi-station fixture assembly mounted on the turntable (9), the multi-station fixture assembly comprising a chassis (100) and multiple clamping assemblies(200) connected to the chassis and distributed around the center of the chassis, wherein the clamping assembly comprises:

a fixed clamping plate (2), vertically and fixedly connected to the chassis (100);

a push plate (3), parallel to the fixed clamping plate, the center (O) of the chassis is on the same side of the plane where the fixed clamping plate (2) lies as the plane where the push plate (3) lies, and the plane where the push plate lies is closer to the center of the chassis compared to the plane where the fixed clamping plate lies; and

a straight-travel driving mechanism (4), connected to the push plate near the edge of the chassis, and driving the push plate (3) moving back and forth relative to the fixed clamping plate (2).

2. The book edge printing device according to claim 1, characterized in that: the chassis(100) consists of four baseplates(1), each provided with the clamping assembly(200); the baseplate(1) is in the shape of an L and includes a connecting portion (101)and a cantilevered portion(102), the four connecting portions are distributed around the center of the baseplate and the adjacent connecting portions are connected to each other, the fixed clamping plate(2) is fixedly connected to the connecting portion and the straight-travel driving mechanism is provided on the cantilevered portion(102).

3. The book edge printing device according to claim 2, characterized in that the chassis (100) is provided with multiple slot holes (1011), at least part of them are between the fixed clamping plate and the push plate.

4. The book edge printing device according to claim 2, characterized in that the connecting portion (101) is provided with one or more bridge members (5) at the end away from the cantilevered portion, and the bridge member is connected to the adjacent connecting portion by fasteners manner.

5. The book edge printing device according to claim 2, characterized by further comprising one or more horizontal reinforcing ribs (6) and vertical reinforcing rib s (7) on the baseplate (1), wherein the horizontal reinforcing rib is provided on the side of the baseplate opposite to the straight-travel driving mechanism, and the vertical reinforcing rib and the horizontal reinforcing rib are provided on the same side of the baseplate and perpendicular to each other.

6. The book edge printing device according to claim 1, characterized by the straight-travel driving mechanism comprising:

a mounting plate (401), fixedly connected to the baseplate (100);

a linear module (402), provided on the mounting plate (401); and

a connecting member (403), one end of which is connected to the push plate (3) and the other end connected to the linear module (402).

7. The book edge printing device according to claim 6, characterized in that the straight-travel driving mechanism (4) also includes a first slide rail (404) and a second slide rail (405) parallel to each other, each provided with a slide block (406), the first slide rail and the second slide rail are connected to the mounting plate (401), the linear module (402) lies between the first slide rail and the second slide rail, and the connection member is connected to the slide block (406).

8. The multi-station fixture for book edge printing according to claim 7, characterized in that: the straight-travel driving mechanism (4) also comprises a first side wall (407) and a second side wall (408), both fixedly connected to the connection member and/or the slide block, and between which are provided the first slide rail (404), the linear module (402) and the second slide rail (405)

9. The multi-station fixture for book edge printing according to claim 1, characterized in that the clamping assembly also includes a grating scale sensor, which is fixed connected to the chassis and used to measure the displacement of the push plate.

Drawing