DE1082563B - Method and device for producing link-free areas in zipper strips consisting of continuous turns - Google Patents

Description

The invention relates to methods and devices for producing limb-free locations with continuous ones Winding of existing fastener strips of zippers by severing coupling elements.

In the manufacture of zippers from continuous turns, it is common to use the zipper strips in the form of long sections of continuous turns and these sections on accordingly long strips of tape or fabric, either at the same time as the or after the formation of the turns. After that, these long strips are cut into sections cut to the desired length and the coupling elements at the ends of these sections severed and removed.

Since cutting and removing the coupling elements at the ends of these strip sections in the process carried out by hand, the production speed that can be achieved with such zip fasteners is considerably impaired. If those If work is not carried out by skilled workers, there is also no guarantee that the sections always have exactly the same length, so that additional work may be necessary are to the length of the strip sections when later being put together to form a zipper to vote.

In the case of zippers in which the coupling elements consist of individual elements that are individually placed in the mutual spacing are attached to a fastener tape, it is known at certain points of the closure strip remove individual coupling elements or create link-free areas. Such is a device known to already during the manufacture of the zipper, when casting on the coupling elements to the fastener tape after a predetermined number of coupling elements of a predetermined To leave the length of the strap free of links. In another known device for dividing of such a continuous fastener strip in predetermined lengths is a cutting knife of a Controlled feelers that intervene in the joint-free areas. There are also known presses with which the Link-free places on such zippers can also be produced subsequently. In a well-known In the case, the device has two jaws, with each of which one or two coupling elements are clamped and which are used to guide a knife with which the clamped Coupling elements are split in half so that the two halves are removed to the sides can.

Another known arrangement is through

Methods and devices

for creating joint-free areas

with continuous turns

existing closure strips

of zippers

Applicant:

Cue Fastener Inc.,

Stamford, Conn. (V. St. A.)

Representative: Dr.-Ing. F. Wuesthoff, Dipl.-Ing. G. Pulse

and Dipl.-Chem. Dr. rer. nat. E. Frhr. v. Bad luck man,

Patent Attorneys, Munich 9, Schweigerstr. 2

Irving M. The other day, Stamford, Conn. (V. St. Α.),
has been named as the inventor

a knife assembly from the continuous zipper, each one corresponding to the link-free point Group of coupling elements cut out and at the same time the zipper in appropriate Cut lengths.

An older, not pre-published proposal is followed in a similar manner. There will - also in the case of a zipper made of individual coupling links - one corresponding to the link-free point Number of coupling elements each cut off from the support tapes by means of a stamp and with the same device cut the slide fastener into predetermined lengths. The ones on the ribbons Remaining remnants of the coupling elements are od by a stream of air, by brushing. The like. Removed. The advance for the zipper is in this case with each work cycle during the separation of the Coupling links and cutting of the strips interrupted.

According to another older, not previously published proposal, one has to manufacture link-free areas in zippers, where the coupling elements consist of continuous windings, operated a device in which only the turns at the ends of the link-free to be produced Separated places by two punches arranged at the appropriate distance. The remaining contiguous Windings are thereby pressed against each other by two and from the plane of the

0O9 52Ä / 3

3 4

retracted fastener strip lowerable gripper Fig. 10 is a perspective view of a

removed. modified form of a device

It is the object of the present invention to provide a for cutting through coil springs and for

Method and apparatus for making removal of portions thereof when coupled

create link-free areas for zippers 5 zipper strips;

is suitable, the coupling elements from continuous Fig. 11 shows a perspective view

Windings exist, and in a simple manner a further embodiment of a device for

Severing and removing the turns on the severance of coil spring zippers;

Free limbs allowed and at high speed. Fig. 12 is a perspective view of a

speed and great accuracy. io device for removing the severed

This object is achieved according to the invention by sections of the zipper strip,

solved that only in the area of the ends of the device to be described below is proper-

To be produced link-free point lying winding is particularly useful for removing sections

genes are completely severed and that between the coil springs of zippers. the

The ends of this location are a section of coiled coil springs of such a zip fastener

gripped quantity-hanging turns and after the usually continuously formed and attached to a

Cutting through the end turns as a whole from the fastener tape or on another piece of fabric z. B.

Loops of the fastening threads on the fastener tape attached by the fact that the coil springs in the

is pulled. Advantageously, the edges of the bands to be woven in, or that

coherent winding section on a coil spring attached to a support tape approximately in 20

seized its middle turn. is sewn. The coil springs consist of different

For the implementation of the method according to the invention, approximately oval or flattened continuous winds

rens, the invention provides a device in which fertilize, which consists of a thread-like material of

The fastener tape consist of continuous approximately elongated cross-sectional shape by means of fastener tape holder. the

Closure strip during the manufacture of the link springs or belts coupled to one another

free space at least over the length of the are divided into sections of suitable length, and

Coupling elements to be freed can be clamped between these sections, gaps are created

is, while creating a transverse to the row of coupling elements to remove individual strands of zipper.

movable and have at least one cutting edge. As mentioned above, the operations

of the cutting knife the winding 30 to be removed to produce these gaps, d. H. to cut off

section is separable at the ends, by means of and removal of end sections of the helical spring

a gripping device to remove the severed each individual fastener strand and to dismantle it

Winding section from the fastener strip from that of the continuous fastener strip into individual

Fixing loops is removable. tail strands of a predetermined length up to now with

The measures according to the invention allow a 35 to be carried out by hand.

easy, safe and fast work. The devices according to the invention according to the

Damage to the band edges is not to be feared, Fig. 1 to 6 allow sections of the screw

as the cut surface of the cutting knife only needs to be removed very small feather, either before or after

needs to be. In addition, the cost of cutting the long fastener strips to size

Forces only very small, so that both the device 40 individual zipper strands of a desired length,

as well as the closure strip also only slightly bean- As shown schematically in FIGS. 1 to 4,

be spoken. "the device comprises two relative to each other

In order to avoid the above-mentioned disadvantages of the removable fastener tape holder 10 and 10a for holding

turn off previous practice, the invention of the fastener tape T provides a coil spring zipper

a device by means of which the tear 45 ses, this carrying tape with bead cords C, C

Let closures be processed in such a way that they can be provided. The coil spring 11 is made

Sections of the winding elements exactly on the z. B. od plastic. The like. The coil spring

cut to the desired length and parts of the same 11 and the support tape T extend over the

either ends of the fastener tape holders 10 and 10a opposite to each other before the zippers are cut to size

or can remove it afterwards, creating an accurate and 50 addition.

rapid manufacture of zipper elements

becomes possible. arranged that they on the coil spring to and

The invention will be seen in the following by hand - can be moved away from it; owns this needle

matic drawings on several execution - a resilient shaft, so that the needle is then,

examples explained in more detail. 55 when brought into engagement with the coil spring

Fig. 1 to 4 are drawn schematically, Perspek- will bend out and into one of the coil spring table Representations of a device for windings can intervene. It also includes pre-cutting and removing parts of the screw direction a separating knife 13 with two narrow, in spring of a zipper strand, · a mutually spaced cutting edge

Fig. 5 shows part of the cut through the 60 14 and 15 at opposite ends of the separating

Helical spring serving device in plan; knife as well as with an intermediate

Fig. 6 shows a side view of a device with section 16, which has a blunt edge. the

the parts illustrated in FIGS. 1 to 5 for cutting edges 14 and 15 work with upward

Cutting through of helical spring sections and protruding contact extensions 17 and 17a on the

to remove the intermediate portion; 65 opposite ends of the tape holder 10a to-

7 to 9 are schematically drawn perspectives, so that one side or both sides of one

tivic representations of a modified device or several turns of one in between

device which can cut the process of cutting through the coil spring. Through this,

Helical spring and the removal of parts of the - that the coils in a along the helical

let the same be recognized; 70 spring axis 11 intersected the measured distance

5 6

the gap between the cut to create a new gap is

Coil spring section 11a lying coils tensions.

from the rest of the helical spring strand at two points. FIGS. 7 to 9 show a similarly designed pre-cut, so that it can be separated from the thread or yarn direction, which, however, serves to “only have one winch loop by means of which the helical spring is attached to the Remove the coil spring so that it is attached to the tape T and can be pulled out. Which is possible to take as few or as many turns of the process of pulling out the severed or peeled one as is desired to create the required peeled coil spring portion 11a from the length of the gap in the slide fastener. The fastener tape T is illustrated in FIG. The bending device according to FIGS. 7 to 9 also comprises a coiled spring mechanism that enables the hook 35, which is moved up and down, to wind on one of its turns and, through the individual turns 36 of the thread, on a strap 38 grind or slide stitches through, so that firm helical spring 37 can attack and pull it out after it, without affecting the position of the above. In this embodiment, beyond the ends of the coil spring section, the cutting knife 39 is moved forward after the 11a continuous section of the 15 hooks is changed a short piece of its upward movement of the coil spring 11, and has traveled back without breaking, around that section that tears or to cut through another damage to the suspension loop, which is located above the association T. remaining part of the helical spring 37. This device, the device generally described above, can be designed in such a way that the carrier tape holder 40, which is used to hold the tape in place, can operate automatically and is provided with a motor drive. For a production on a smaller scale and 40 a step by step to the right or rod as desired, however, it is possible to move the device to the left in order to set up the individual loops for manual operation. According to FIG. 6 helical spring 37 one after the other under the needle or the hand-operated device comprises the carrier tape to bring the hook 35, so that one after the other holder 10 and 10a, which in the vicinity of their lower 25 raise a plurality of loops and through-ends can cut connected by a hinge 18 to the zipper with a are, the fastener tape holder 10 by a on the gap of the desired length to be provided. The one-carrying table 20 for the holding device attached to the device for actuating this device, the piece 19 can be held firmly in its position. Similar to the support shown in Figure 6; however, this tape holder 10 carries a extending away from it- 3 ° devices also for a fully automatic working the extension 21, which can be formed through an opening in that way.

Liner holder 10 α protrudes. This extension 21, a device for removing sections, carries a cam 22 with an attached coil spring from a zip fastener, the handle 23, by means of which the cam 22 can be rotated, includes two coupled coil springs, so that the fastener tape holders 10 and 10 can be used a together 35 Fig. 10 is shown. This device is to be pressed out and in this way the fastener tape T is formed so that it can hold two coupled coil springs between the fastener tape holders. A bracket 24 carrying the hook 12 is attached to the severed portions of the coil springs from the top of a support bar 25 which is removed in straps to which they are connected, one built into the table Bearing sleeve 26 sliding 4 ° In preparation for creating the gap in which is guided; the lower end of the support rod 25 is zipper must first be connected to the continuous tear means of an intermediate lever 27 with a pedal 28 zipper strips into individual zipper strips. The pedal 28 is to be cut on a rear leg of a predetermined length. The rotatably mounted in the table 20. A return spring Fig. 10 recognizable single zipper 50 comprises 29, which carry the underside of the table 20 with the 45 two strands 50a and 505, the coupled screw pedal 28, biases the carrier 24 and thus springs 51 α and 52 α. The zipper strip also engages the hook 12 in an upward direction. 50 is moved into the correct position on a table 53. A curved piece 30 is placed on the support rod 25; on the table 53 is a hold-down and fastened, which can grip the rear edge of the cutting knife 13 guide plate 54 with the help of screws and; the cutting knife is fastened in an adjustable manner with 50 slot connections 55, 56. The hold-down plate, which is provided with slots and fastened to the table 20, has an undercut edge of the knife support 31, which is guided in a sliding manner. Also the separating 57, the loosely over the fastener tape of a section 50a knife 13 engages away from the fastener tape holders 10 and 10 α of the zipper. Biased near the way by means of a spring, not shown. At the end of the hold-down plate 54 is a gripper 59. When using the device, the carrier 55 is arranged, which is carried by an angle lever 60 bana T between the opened carrier tape holder 10, which in turn rotates on a bolt 61 and 10a, whereupon one the cam 22 is mounted; the bolt 61 is also rotated by two to clamp the fastener tape T. When the angle iron piece 62 fixed on the table 53 pedal 28 is depressed, the hook moves with assistance. Furthermore, a stop block 64 is in front of 12 downwards, in order to come with the helical spring 11 in contact 60 to the length of the contact under the hold-down plate, the curve piece 30 limiting the zipper strand 54 brought in. Separating knife 13 advances so that the screw With this arrangement, the gripper 59 can be cut through at two points at a distance by spring. move down to the ends of the coupled When the pedal 28 is released, the coil springs to grasp and hold without return spring 29 moves the hook 12 upwards so that it 65 that the gripper on the straps or bead cords the severed portion 11a of the coil spring of the zipper strand engages, pulls upwards. Now you turn the cam 22. The end sections of the coupled coil springs back to open the fastener tape holder, whereupon 51 α and 52 α can be moved from the other sections to the closure strip by hand then separate it for the next step 70, which is down into a corresponding

The die opening 67 can be moved into it, the latter being provided in the plate 53. With it, a or several turns of the coil springs are punched out so that each coil spring of the fastener strip is split into two parts. When the zipper 50 is pulled to the left, the portions of the coil spring that the gripper 59 engages are held in place and by the straps stripped so that the desired gap at the ends of the bands located on the right-hand side arises. Then you can turn the zipper over so that you can open the opposite end similarly voided.

11 and 12 show another type of device, by means of which a continuous, not cut long zipper strand before cutting into shorter zippers of the desired Length can be provided with gaps. This embodiment of the invention includes a platform 70 with two undercut adjustable guide plates 71 and 72 resting on top the platform and over the straps 73 and 74 of a coupled zipper

75 reach away. The distance between the facing edges of the guide plates 71 and 72 is chosen so that these edges engage the slide fastener tape behind the bead cords and that the coil springs are completely exposed between them. The removal of a desired Sections of the coil springs which have length can be cut with the aid of a two cutting punch bearing component 76 take place; this component

76 is attached to an arm 77 which is supported by a rod 78 which in turn is supported by a Pedal 79 or in any other suitable manner is operated to up and down the rod relative to the table 70 move away. The component 76 carries two separating punches 80 and 81, which have corresponding openings in the table 70 work together, so that you have the coil springs in places between which a distance is present, can punch out.

At the right end of the table there is a pin 82 which is used to hold the coil springs of the Zipper between the circular openings punched out by the separating punches 80 and 81 to separate from each other. The pin 82 has a head generally triangular in shape or in Shape of an arrowhead, and this head sits on a thin neck or shaft portion 83. The triangular or arrow-shaped head of the pen has a larger diameter than that made by the cutting punch 80 and 81 created holes so that the zipper will open when it is pushed forward Insert the pin into the hole, then press the zipper down. When the zipper is on this is pulled to the right, the pin separates the sections of the coil springs from each other, namely up to the left hole produced by the cutting punch 80. Because this hole has a larger diameter possessed than the neck 83 of the pin, the coil springs of the zipper are to the left of the left hole not pushed apart or separated from each other. The position of the pin 82 can thus serve to measure the length of the individual zippers to be produced from the continuous zipper strand to determine. For this purpose, the pin 82 is supported by a U-shaped bracket 85; this bracket has slots 86 in its opposite legs so that it can be can be adjusted in the longitudinal direction of the table 70 so as to adjust the distance between the pin and the To change cutting punches 80 and 81 and accordingly also the length of the zipper to be produced. The bracket 85 can be set in the desired position with the help of clamping screws 87, the extend through the slots 86 and screw into threaded holes provided in the table 70 will.

After uncoupling the zipper, the severed portions 88 and 89 of the coil springs can be removed between the punched holes with the aid of the device illustrated in FIG Bands 73 and 74 are removed. This device comprises a table 90 on which a jaw 91 is attached, as well as a cooperating with this jaw movable jaw 92, the central portion of pieces 88 and 89 of the coil springs can hold when the zipper is in the in Fig. 12 is collapsed. The jaw 92 can be positioned between angled bearing blocks 95 and 96 can be rotatably mounted on the table 90, and this jaw can be adjusted by means of a pedal 97, the connected to the jaw by a pull rod 98, move downwards. The cheeks are usually pushed apart by a spring 100 arranged between them.

The jaws 91 and 92 are formed and arranged so that they the portions 88 and 89 of the Hold the coil springs securely but do not crush them, which will remove them from the ligaments can be removed by simply pulling away the zipper 75 in the direction of the arrow shown in FIG. To prevent the coil springs from being crushed or broken by the jaws, For example, a set screw 101 can be inserted into the jaw 92 in such a way that it engages the lower jaw 91 and thereby keeps the jaw 92 at a slight distance from the jaw 91.

Claims (9)

Patent claims: 1. Method for producing link-free locations in strips of continuous turns existing zippers by separating coupling elements, characterized in that that only the turns lying in the region of the ends of the link-free point to be produced are completely severed and the section located between the ends of this point gripped by coherent turns and after severing the end turns is pulled out as a whole from the loops of the fastening threads on the strap. 2. The method according to claim 1, characterized in that the contiguous turn portion on a lying approximately in its center Turn is taken. 3. Apparatus for performing the method according to claim 1 or 2 with cutting means for severing coupling elements and with a releasable holding device for holding the closure strip, characterized in that the fastener tape holder (10, 10 a or 54 or 40, 40 a) the The support tape (T) of the continuous fastener strip can be clamped during the creation of the link-free point at least over the length of the point to be freed from the coupling elements, while a cutting knife (13 or 66 or 39) the winding section (11α) to be removed can be separated at the ends, whereby the separated winding section (Ha) to be removed can be removed from the fastening strip from the fastening loops by means of a gripping device (12 or 59 or 35). 4. Apparatus according to claim 3, characterized in that the cutting knife (13) corresponds to two has the length of the link-free point at a distance from blades (14, 15). 5. Apparatus according to claim 3 or 4, characterized by a cooperating with the cutting edges and on the opposite side of the row of links (11 α) arranged counter holder (17, 17 a), through which the row of links is supported during severing. 6. Apparatus according to claim 5, characterized in that the counter-holding surfaces are formed by projections (17, 17 a) attached to the fastener tape holder (10a). 7. Apparatus according to claim 3 to 6, characterized in that the gripper device is a at its end hook-shaped curved needle (12), which from a rest position in a Gripping position is movable, in which the hook Shaped end a turn of the turn portion to be removed (Ha) detected and from this can be withdrawn again into the rest position with the gripped winding section. 8. Apparatus according to claim 7, characterized in that through the gripper advance a cam gear (30) of the cutting knife feed can be controlled. 9. The device according to claim 3 for producing link-free points at the ends of a closure strip cut to a predetermined length, characterized in that the link row (50) by means of a cutting punch (66) cooperating with a corresponding die opening (67) in the base plate (53) is) at a predetermined distance from the fastener strip end separably while by b to the end of the strip (50a, 50 attachable) coupling members lying, preferably quergezahnte gripping means (59) of the severed portion of the row of coupling elements from the fastener tapes (50 a, 50 V) is removable. Considered publications:
U.S. Patent Nos. 2,394,197, 2,754,908. 1 sheet of drawings © «» 528/5 5.60