INVENTION PURPOSE
[0001] This invention alludes to the functioning of depilatory strip manufacturing equipment
and to the meter module dedicated to counting and stacking the produced depilatory
strips.
TECNICAL STATE
[0002] Generally, manufacturing equipment for double depilatory wax strips consist of
a support coil reel, a wax-dosage system, a system for guiding, cutting and clustering
the strips before introducing them in flow-packs and monitoring equipment.
[0003] The electrical mechanization system provides movement to the transmission to drag
the film. Dragging is done by drive shafts and cylinder drags.
[0004] The prime strip-material derives from a set of wind shafts, which consist of an unwinding
coil reel comprising the reel in use. Once the reel in use has been used completely,
the machine will stop in order to load and thread the next one.
[0005] To maintain the ideal material temperature, the system has been provided with a
cooling system of water cooled cylinders for the wax and depilatory strips.
[0006] In order to provide the depilatory strips with wax, the equipment includes a wax-dosage
system for dose regulation, consisting of a gear pump, a lamination bypass block,
and system to open and close the wax system using a pneumatic cylinder commanded by
solenoid. The results of this set create a limited ability for dosage.
[0007] The waxed strips are covered with the other strip and then stacked with the strip
aligners. The cutting device consists of a rotating system of blades and dollies without
any constant velocity, regulated by non-centric mechanics.
[0008] Once the strips leave the cutter in several groups, they are conveyed to the metering
system through a tape. The capacity of this system limits the speed of the other sets
and the
overall production of the machine.
[0009] The integration of all systems in the one depilatory wax strip manufacturing machine
improves the limited production capacity, and helped define the bottleneck identified
in the counter module.
INVENTION DEFINITION
[0010] This invention seeks to resolve or reduce one or more of the aforementioned drawbacks
through a depilatory strip meter-system with double cutting wedges as claimed in claim
1. Development of the invention is established in subordinate claims.
[0011] One of the aims of this invention is to provide a high performance strip meter to
depilatory strip manufacturing equipment, in which the cutting wedge has been split
(in order to reduce the movement by half) and the systems operating time remains the
same when changing (doubling) the speed of the machine.
[0012] Another aim of this invention is to provide a machine with an unwinding module consisting of two coil reels, one loaded with the reel in use and the other with
the next to be used. A reel-end detector will automatically activate a mechanism to
switch the unwounded coil, joining the end of the first reel with the beginning of
the next, subsequently establishing the automatic rejection of the junction area.
IMAGE DESCRIPTION
[0013] The devices embodying the invention will now be described, by way of example only,
with reference to the accompanying drawings, wherein:
[0014] Image 1 shows the location of the meter module (S) in the depilatory wax strip manufacturing
equipment, in accordance with the invention.
INVENTION DESCRIPTION
[0015] Relative to image 1, the basic aim in the manufacturing process in which this type
of machine is used, is to obtain depilatory wax strips. To accomplish the aforementioned
labor, the machine runs from film coil reels 1, 2 and the depilatory wax from 6.
[0016] The reel arrives in unwinding coils, with a continuously controlled tension. There
are two double-width coil reels, one with the film on which the wax will be applied
and a film that will be placed on the film where the wax is applied.
[0017] The wax is applied 6 to the desired length and centering, performed by a lamination
system with negative closure.
[0018] Another film strip is placed over the applied strip to cover the wax. In order for
the wax to stay in place, the set is cooled in 4.
[0019] The two strip assembly lines are longitudinally spaced and the film overlay system
covers only the strips on that one line; then the paper is cut to the desired length.
[0020] The cutting module 3 consists of two parallel axes. One of them with two cutting
blades
at 180º and the other with two dollies at 180 which rotate completely synchronized
by spur gears, the actual cut of the part is produced by contact between the blade and
the dolly.
[0021] The movement is
performed by a reductive servomotor, eliminating the non-centric mechanical group
of current machines, performing the acceleration and deceleration maneuver twice in
the same turn, until a suitable cutting speed is acquired.
[0022] The strips convey to the meter S where the desired number of strips per bag are counted
and stacked, and eventually passed to the flow-pack bagger.
1. Strip meter system in manufacturer equipment for depilatory wax strips S;
defined by its double wedge cutter 7 which reduces the movement of this element by
half, allowing
to increase the production speed of the machine
2. System according to claim 1; defined by the synchronized delivery of the depilatory
strip packages by the upper double wedge to the lower double wedge, which is the one
that will accumulated desired strip packages.
3. System according to claim 2; defined by the lower wedge, which is able to deliver
the strip packages to a bucket line for transport to the flow-pack bagger.
4. System according to claim 3; defined by the fact that the depilatory strip machine
operates continuously and synchronized with 15 the bagger, which also works continuously,
and that each of the machines' systems operates at different speeds depending on the
number of strips per package, but always synchronized.