JP3407889B2 - Manufacturing method of slide fastener - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for efficiently producing a required number of slide fasteners of a desired type from various long fastener chains.

BACKGROUND ART From a continuous continuous fastener chain that is continuously supplied, a space portion having a predetermined size is sequentially formed for each product length of a slide fastener, and then fastener components such as an upper stop, a slider and a lower stop are attached. After that, a method of cutting the same fastener chain into slide fasteners to continuously manufacture individual slide fasteners is disclosed in, for example, JP-A-3-99602 and JP-A-4-40902.

By the way, the color tone, product length, and form of slide fasteners demanded by customers tend to be small in variety, and in production lines that continuously produce individual slide fasteners from long fastener chains, the production volume Needs to be managed efficiently and reliably according to customer orders.

In order to meet such a demand, the above-mentioned JP-A-3-9960
According to the slide fastener manufacturing method disclosed in Japanese Patent Laid-Open No. 2-40902 and Japanese Patent Laid-Open No. 4-40902, the total length of a long fastener chain required to produce a predetermined number of individual slide fasteners is measured in advance. It is then stored in the supply unit and is supplied to the production line by the length thereof to produce the required number of slide fasteners.

However, the order from the customer is made not by the length of the entire length of the fastener chain, but by the number of slide fasteners that have become products, and it is necessary to manage by the number of slide fasteners.

In the above-mentioned conventional manufacturing method, first, after measuring the total length of the fastener chain necessary for production, for each product length of the slide fastener produced from the same fastener chain, a part of a series of engaging fastener elements is The space portion is sequentially formed by removing it with a predetermined size, but the fastener chain that is sent to the space portion forming process to form the next space portion has the product length of the slide fastener measured again in the same process. .

On the other hand, according to the continuous manufacturing method of the slide fastener as described above, the length measurement conditions such as tension are likely to change in the fastener chain that passes through multiple steps, and the length measurement of the fastener chain and the product of the slide fastener are performed. There is a gap between the length measurement and the length measurement. In this case, even if the deviation between two adjacent slide fasteners is extremely small, if this slight deviation extends over the entire length of the slide fastener that is continuously produced, it will be an extremely large deviation and will be immediately produced. It will affect the number.

That is, when the length required for the fastener chain is measured in advance and only that length is supplied to the production line, the total length of the fastener chain corresponding to the number of slide fasteners to be produced may be insufficient. In order to deal with this, it was necessary to set the total length of the fastener chain in advance in anticipation of the shortage amount. If the total length of the fastener chain is set to be large in this way, there may be excess fastener chains with respect to the number of slide fasteners produced, and this excess fastener chain will be discarded. Therefore, not only the productivity is lowered, but also the surplus amount is not always constant, which makes the production management very complicated.

The present invention was developed to solve the above-mentioned problems, and its specific purpose is to efficiently meet various requirements for slide fasteners, and yet to provide a surplus of fastener chains required for slide fasteners of the same type. It is an object of the present invention to provide a method for manufacturing a slide fastener that eliminates the problem as much as possible and facilitates production control.

DISCLOSURE OF THE INVENTION In order to achieve the above object, the present invention forms a space portion for each product length of a slide fastener of a continuous fastener chain sequentially supplied from a supply portion of a fastener chain, and then sequentially attaches slide fastener components. ,
In a method of continuously manufacturing individual slide fasteners by cutting each slide fastener product, a continuous fastener chain that is sequentially supplied is set in advance by a length measuring unit installed in the step of forming the space portion. Repeating the length measurement for each product length, sequentially supplying a fastener chain of a length corresponding to the product length to the space portion forming step, which corresponds to a predetermined number of slide fasteners in the space portion forming step. After sequentially forming the space portion, cutting the fastener chain based on a command from the control unit, and after completion of the cutting, automatically switching to supply of the next continuous fastener chain based on a chain switching command from the control unit. And a slide fastener manufacturing method, characterized in that There.

Further, the present invention automatically switches the supply of another continuous fastener chain of a different type to be manufactured next time, and then automatically supplies the supply end portion of the continuous fastener chain and the cut end portion of the previous continuous fastener chain. When the distance between the fastener chain supply section and the space forming section is longer than the product length of the slide fastener to be manufactured, the cutting of the fastener chain based on a command from the control section is further included. If the distance between the fastener chain supply section and the space forming section is shorter than the product length of the slide fastener to be manufactured, cut at the end of forming the space before the final formation of the space section, Cutting at the end of forming the space portion can be included.

That is, in the present invention, the continuous fastener chain to be manufactured is supplied to the space forming step from the fastener chain supply unit including a plurality of long continuous fastener chains regardless of the number of slide fasteners manufactured. In addition, in the same space forming step, the product length of the slide fastener is measured to form a space portion, and after forming the space portion corresponding to the number of slide fasteners, another type of fastener chain in the supply portion is formed. Automatically, and a desired number of various types of slide fasteners are successively manufactured.

Therefore, as in the past, the total length of the fastener chains, which is equivalent to the number of slide fasteners planned to be manufactured in advance, is measured and the fastener chains are stored in the supply unit, and when the fastener chains are supplied, the fastener chains are individually re-created in the space forming process. Compared to the case where the space is formed while measuring the length of the slide fastener, it becomes possible to manufacture a predetermined number of slide fasteners using the minimum required fastener chain. Since it is automatically replaced with the fastener chain to be manufactured next time in the department, it becomes possible to immediately meet the demand for the reduction of the number of kinds of various products, and the productivity is remarkably improved.

Further, when cutting the fastener chain based on a command from the control unit is longer than the product length of the slide fastener to be manufactured in which the distance between the fastener chain supply unit and the space forming unit is longer, the final formation of the space unit is performed. If the distance between the fastener chain supply section and the space forming section is shorter than the product length of the slide fastener to be manufactured, the cutting is performed at the end of forming the space section before the unit of By doing so, the fastener chain to be discarded can be minimized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall perspective view showing an outline of an example of a manufacturing process of a slide fastener according to the present invention, and FIG. 2 is a control block diagram of the manufacturing process.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, representative embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall schematic view showing an example of a manufacturing process of a slide fastener of the present invention.

According to the present embodiment, the fastener chain supply device 10 is unitized and constitutes the chain exchange unit of the present invention. The fastener chain supply device 10 in this embodiment has substantially the same structure as the tape supply device disclosed in Japanese Patent Laid-Open No. 4-144689. Therefore, detailed description of the structure of the fastener chain supply device 10 in the present embodiment will be omitted, and the operation procedure will be mainly described.

The fastener chain supply device 10 in this embodiment is also
A continuous fastener chain with different colors wound on multiple reels as a chain cassette 12 on the table 11.
A plurality of Ca to Cn are attached in parallel to a support bracket 13 standing upright on a table 11. Also, the table 11
A guide roll 13a that guides the continuous fastener chains Ca to Cn supplied by the chain cassettes 12a to 12n to the chain lead-out path 14 is provided above. Further, in front of each chain lead-out path 14 of the table 11, a pair of upper and lower plate-like lead-out members 15 for guiding while sandwiching the upper and lower surfaces of each fastener chain Ca to Cn extend horizontally along the chain lead-out path 14. It is set up.

The table 11 is replaceably installed on the slide table 11a, and the slide table 11a is laid across a pair of guide rails 16 extending in the parallel direction of the chain cassettes 12a to 12n and slidable along the guide rails 16. It is possible to move. As shown in FIG. 2, the slide table 11a reciprocates along the guide rail 16 in accordance with the rotation of a ball screw 17 which is controlled by a control drive device such as a servomotor based on a command from the control device CP. .

The control device CP selects a desired chain cassette 12h from the plurality of chain cassettes 12a to 12n arranged on the table 11, moves the slide table 11a along the guide rails 16, and selects the desired chain cassette. The plate-shaped lead-out member 15 that guides the fastener chain Ch of 12h faces the chain processing path CL.

At the tip ends of the pair of upper and lower plate-shaped lead-out members 15, recesses 15a exposing the fastener tape surface of the fastener chain C are formed on both left and right sides while leaving the tips, and the upper and lower plate-shaped lead-out members 15 have the same shape. I am doing it. Pressing feed rolls 17 are disposed above and below the recess 15a,
The pressure feed roll 17 is capable of vertical control operation and control rotation by an operation device such as a cylinder (not shown) and a rotation drive device capable of forward and reverse rotation such as a servo motor based on a command from the control device CP. A groove portion 17a continuous in the circumferential direction is formed in the center of the peripheral surface.

In response to a command to switch the chain cassettes 12a to 12n from the control device CP, the desired chain cassette 12H as described above is received.
When switched to, the upper and lower press contact feed rolls 17 move in the approaching direction to press the fastener tape surfaces exposed from the recesses from above and below to sandwich the fastener chain Ch from above and below. At this time, the connecting portion 15 between the left and right concave portions 15a of the plate-shaped lead-out member 15 is provided in the groove portion 17a formed in the pressure feed roll 17.
b is accommodated. Here, the press-contact feed roll 17 rotates a predetermined number of revolutions to send out a desired length of the fastener chain Ch forward.

In the present invention, in order to manufacture a predetermined number of slide fasteners, for example, the red continuous fastener chain is used.
While sequentially transferring Ch, the space forming device 30 forms the space portions SP corresponding to the planned number of slide fasteners SF of the same type.

When the predetermined number of space parts SP are formed, a command is issued from the control part CP to the chain exchange unit 10, and the red fastener chain Ch that has been supplied so far is cut.
After cutting, a command is again issued from the control unit CP to the chain exchange unit 10, the cut red continuous fastener chain Ch is rewound on the chain cassette 12h, the slide table 11a moves, and another color tone, for example, blue A chain cassette 12n that installs the continuous fastener chain Cn is located in front of the fastener chain running path, supplies the blue continuous fastener chain Cn, and connects with the cut end of the previously cut red continuous fastener chain Ch to form a space. Send to device 30.

At this time, the red continuous fastener chain Ch formed by molding a predetermined number of space portions SP is wasted in the length between the space forming device 30 and the chain exchange unit 10, and will be discarded later, but each manufactured individual When the length of the slide fastener is L and the length to be discarded is L ', the length L of the slide fastener is the space forming device 30.
If it is shorter than the distance L ′ from the chain exchange unit 10 to the chain exchange unit 10, that is, if L <L ′, the control unit CP instructs the chain exchange unit 10 to form the space SP one before the planned production number. Then, the same fastener chain Ch is cut, and after connecting with another blue continuous fastener chain Cn, the final space of the planned production number is formed. Incorporating such a program is effective because the length of the discarded fastener chain can be reduced.

Further, when the length L of the slide fastener is longer than the distance L'between the space forming device 30 and the chain exchange unit 10, that is, L> L ', immediately after the production of the planned number of spaces is completed, A command is issued to the chain exchange unit 10 to discard the excess red fastener chain Ch of length L '.

In the above control, the distance L'between the space forming device 30 and the chain exchange unit 10 is always constant,
The length L of a different type of slide fastener to be manufactured is input to the control device CP in advance, and the distance L and the length L '
And the operation setting of the space forming device 30 is changed.

In this embodiment, the continuous fastener chain Ch
When is cut, the pressure feed roll from the control device CP
A signal is sent to a rotation drive device (not shown) of 17 to rotate the press contact feed roll 17 by a predetermined number of revolutions, and the fastener chain Ch sandwiched between the rolls is returned in the direction opposite to the feeding direction. The cut ends of Ch are retracted to the tips of the upper and lower plate-shaped lead-out members 15. After the completion of this retreat,
The upper and lower pressure feed rolls 17 move in the separating direction to release the pressure contact of the fastener tape.

Next, by moving the slide table 11a as described above, the plate-shaped lead-out member 15 for guiding, for example, the blue continuous fastener chain Cn wound around the chain cassette 12h corresponding to the slide fastener to be manufactured next time is attached to the chain processing path CL. Confront. Here, the upper and lower pressure feed rolls 17 again move in the approaching direction, and the recess 15 of the plate-shaped lead-out member 15 is again moved.
a Press the fastener tape surface exposed from above from above and below,
Hold the same fastener chain Cn. Next, the upper pressure feed roll 17 rotates in the forward direction, and the on-board lead-out member 15
The fastener chain Cn is sent from the tip of the fastener chain to the fastener chain automatic joining device 20 in the next step, which will be described later. The amount of movement of the fastener chain Cn that moves back and forth in the chain processing path CL is set in advance, and the amount of movement of the continuous fastener chain Cn is determined by the number of rotations of the pressure feed roll.

After the predetermined feeding is completed, the upper and lower pressure feed rolls 17 are moved in the separating direction based on a command from the control device CP to release the pressure contact of the fastener tape surface. The continuous fastener chain Cn sent out is an automatic chain joining device 20.
To the first chain gripper 21, and the end portion of the fastener chain Cn is gripped and fixed. The automatic chain joining device 20 in this embodiment supports and guides one surface of the chain running surface along the chain machining path CL, and also the movable first chain gripper 21 that reciprocates a predetermined distance.
And a second chain gripper 22 fixed at a predetermined position on the chain traveling path.

The configurations of the first and second chain grippers 21 and 22 are basically the same except that one is movable along the chain machining path CL, while the other is fixed. Have a configuration. That is, the first chain gripper 21 repeats the contact / separation operation toward the second chain gripper 22 along the traveling path of the chain C based on a command from the control device CP. This contacting / separating operation is performed, for example, by operating a cylinder (not shown).

The first chain gripper 21 comprises a movable gripping member 21a and a fixed gripping member 21b. The movable gripping member 21a is moved toward and away from the fixed gripping member 21b by a driving device such as a cylinder (not shown) in a direction orthogonal to the chain machining path CL. It is possible. Further, stepped portions are formed on the upper surfaces of the movable gripping member 21a and the fixed gripping member 21b so as to face each other.
When a moves forward and abuts on the fixed gripping member 22, the meshing element row of the fastener chain C located on the upper surface of the first chain gripper is sandwiched between the step portions from both side surfaces.

Further, the first chain gripper 21 can be reciprocated along a chain traveling path by a driving device such as a cylinder (not shown) based on a command from the control device CP, and while holding the meshing element row as described above, The new fastener chain Cn is moved toward the second chain gripper 22 which is fixedly installed at a predetermined interval on the downstream side in the chain feeding direction. The second chain gripper 22 is composed of a movable gripping member 22a and a fixed gripping member 22b, like the first chain gripper 21.
Of the movable gripping member 22a is advanced toward the fixed gripping member 22b,
The engaging element row at the cut end of the fastener chain Ch that was supplied last time is gripped and fixed from the left and right.

According to the present embodiment, the tip of the new fastener chain Cn that is exchanged as described above and gripped by the first chain gripper 21 is cut by the first cutting blade 26a, and the cut end is the end surface of the first chain gripper 21. Is matched with. Further, the previously cut end of the previous fastener chain Ch is transferred by the transport roll described later in the feeding direction of the fastener chain until it is aligned with the end face of the second chain gripper 22, and then the meshing element row is moved to the above-mentioned manner. In particular, the second chain gripper 22 is gripped and fixed from the side surface.

Each fastener chain C gripped and fixed to the first chain gripper 21 and the second chain gripper 22 in this manner
The ends of h and Cn are moved by moving the first chain gripper 21 toward the second chain gripper 22 as described above, so that when the first and second chain grippers 21 and 22 contact each other, the fastener chain The ends of Ch and Cn are butted against each other.

Next, the chain end connecting device 20a for connecting the ends of the butted fastener chains Ch, Cn to each other operates. The chain end coupling device 20a is provided above the position where the first chain gripper 21 stops when the ends of the fastener chains Ch and Cn come into contact with each other. The chain end coupling device 20a in this embodiment is shown in FIG.
Tape-like adhesive film with metal surface as shown in
The adhesive member 24 and the film cutter 25 are provided.
The adhesive film sticking member 24 moves up and down by a cylinder (not shown), and consists of an adhesive film roll 24a and a film sticking roll 24b, and the film cutter 25 is arranged in front of the film sticking roll 24b. , Control device CP
A moving means (not shown) is actuated by a command from the above to cause the adhesive film sticking member 24 and the film cutter 25 to reciprocate by a predetermined stroke along the chain processing path CL. The edge of the film cutter 25 is located slightly above the lower end of the sticking roll 24b.

The sticking member 24 of the tape-shaped adhesive film 23 is a film sticking roll 24 by a driving device such as a cylinder (not shown).
b is the fastener chain C on the first chain gripper 21
n is pressed down so that the end of the adhesive film 23 is attached. The attaching member 24 moves in the feeding direction along the traveling path of the fastener chain Cn, and the film attaching roll 24a attaches the adhesive film 23 to the upper surface of the fastener chain Cn, while the first chain gripper 21 to the second chain gripper. The fastener chain Ch of 22 is moved to the fastener chain Ch, and the fastener chains Cn and Ch that are abutted are connected by an adhesive film 23. The adhesive film 23 is cut by the film cutter 25 when the attaching member 24 rises.

Here, the first chain gripper 21 and the second chain gripper 22 are connected by releasing the holding of the fastener element by moving the movable gripping members 21a, 22a from the fixed gripping members 21b, 22b in the separating direction. Leave the fastener chains Cn, Ch free. Then, in response to a command from the control device CP, the first chain gripper 21
Moves from the second chain gripper 22 in the separating direction and returns to the original position. In the connected fastener chain C, the transport roll 32 disposed on the downstream side of the space forming device 30 in the chain feeding direction is driven and rotated by a driving device such as a motor (not shown) so that the space forming device 30 has a predetermined length. Be transferred to.

The cutting means 26 of the fastener chain C arranged between the first chain gripper 21 and the second chain gripper 22 is directed toward the fastener chain by a driving means (not shown) in a direction orthogonal to the chain processing path CL. It is composed of first and second cutting blades 26a, 26b that can be moved forward and backward, and are arranged in parallel along the chain machining path CL.

The continuous fastener chains Ca to Cn wound around the chain cassettes 12a to 12n are stapled at the same cut ends when a defective portion or the like is cut off, and the continuous fastener chains Ca to Cn are connected by the stapler. Before reaching the cutting means 26, when the connecting portion by the stapler is detected by a detection means (not shown), a command is issued from the control device CP in response to the detection signal, and the cutting means 26 causes the continuous fastener chain Ca. ~ Cn to the cutting position, at the same time cut both sides of the connecting portion by the stapler, after cutting the connecting portion, by the same operation as described above by the adhesive film 23 fastener chain Ca ~ Cn
The cut ends of are connected again and transferred to the space forming device 30 which is the next step.

On the upstream side of the space forming device 30 in the chain feeding direction, a length measuring roll 31 is arranged close to the space forming device 30. In the present invention, this length-measuring roll 31 is one of the constituent members having an important meaning in relation to the chain exchange unit 10 described above. That is, the formation timing of the space portion in the present invention is determined based on the length measurement signal emitted from the length measurement roll 31. Therefore, the length measuring roll 31 is provided with, for example, a rotation speed detecting means such as an encoder, and the rotation speed of the length measuring roll 31 is constantly detected, and a detection signal thereof is sent to the control unit CP. In the control unit CP, when receiving the detection signal of the number of revolutions and reaching the same number of revolutions as compared with a preset number of revolutions, the drive device (not shown) of the transport roll 32 rotates the measuring roll 31. A stop signal is sent to stop the transport roll 32, and an operation signal is sent to the space forming device 30 to remove a part of the meshing element row of the fastener chain C and form the space portion SP.

The control device CP counts the number of times in order to send the rotation stop signal or the space formation operation signal, and the number of slide fasteners produced, or 1 from the number produced.
When a predetermined number of times corresponding to the number of drawn books is reached, the first and second chain grippers 21, 2 are
2. The continuous fastener chain C is cut by sending an operation signal to the operation portion of the chain cutting means 26 such as a cylinder (not shown) according to the above-described operation procedures.

When the space portion is formed in this manner, the slide fastener, for example, a lower stopper attaching device 40, a continuous fastener chain C cutting device 50, a slider threading device 60, and an upper stopper attaching device 70 are sequentially passed through. Then, a slide fastener of a desired type having a predetermined length is continuously manufactured. In FIG. 1, 41 is a material for various kinds of bottom stoppers, 42
Cut the desired bottom stopper material and attach the bottom stopper 40
A feeder for the bottom stopper that automatically feeds the slider, 61 is a slider feeder that can automatically feed multiple types of sliders, 62
Is a slider guide part, 63 is a slider holder, and 64 is a chain transfer gripper. Known devices can be adopted as the respective devices applied to the mounting process of the slide fastener constituent parts and the like, and in the present embodiment, the above-mentioned JP-A-3-99602 is used.
Since each device disclosed in the publication is adopted, the description of the specific configuration and operation thereof will be omitted here.

As will be understood from the above description, in the present embodiment, the control device CP is responsible for all the operation timings, sequences, etc. of the respective operation members. FIG. 2 shows the block diagram.

In addition, in the above-mentioned embodiment, the manufacture of the slide fastener having the non-separable type normal structure has been described, but the present invention can be naturally applied to the slide type slide fastener to which the separable bottom end stop is attached. In this case, the space forming device 30
And the slider threading device 60 between the lower stopper mounting device 50
Instead, an auxiliary tape attaching device, a reinforcing part opening device, and a separable bottom end stop attaching device, which are not shown, are provided. As described above, the present invention can be variously modified without departing from the spirit thereof.

INDUSTRIAL APPLICABILITY As is apparent from the above description, the present invention supplies a long continuous fastener chain from the supply unit and manufactures the same, regardless of the number of slide fasteners to be manufactured. The space is formed by measuring the length of each slide fastener, and after forming the space corresponding to the number of slide fasteners,
Since the supply unit automatically switches to another type of fastener chain and successively manufactures a desired number of various types of slide fasteners, it corresponds to the number of slide fasteners planned in advance as in the conventional case. Compared to the case where the length of the fastener chain is measured and prepared individually, and the space is formed while measuring the length of each slide fastener manufactured again in the space forming process, the number of types of products is reduced. In addition to being able to respond quickly to requests, it becomes possible to manufacture a predetermined number of slide fasteners using the minimum required fastener chain without the need to measure the total length of the fastener chain in advance. The things that contribute to the improvement of sex are extremely large.

Further, in the present invention, when cutting the fastener chain based on the command of the control unit, when the distance between the fastener chain supply unit and the space forming unit is longer than the product length of the manufactured slide fastener, If the distance between the fastener chain supply section and the space forming section is shorter than the product length of the slide fastener manufactured by cutting at the end of forming the space immediately before forming the space section, the final space section When cutting at the end of formation, the portion of the fastener chain to be discarded can be minimized, further improving productivity.

Continuation of front page (56) Reference JP-A-3-97407 (JP, A) JP-A-3-41904 (JP, A) JP-A-4-24003 (JP, A) (58) Fields investigated (Int .Cl. ⁷ , DB name) A44B 19/42

Claims (3)

(57) [Claims] 1. A space portion is formed for each product length of a slide fastener of a continuous fastener chain that is sequentially supplied from a fastener chain supply unit, and then slide fastener constituent parts are sequentially attached and cut for each slide fastener product. In the method for continuously manufacturing individual slide fasteners, the continuous fastener chains that are sequentially supplied are measured for each product length of the slide fastener that is preset by the length measuring means installed in the step of forming the space portion. Repeating the above, the length of the fastener chain corresponding to the same product length is sequentially supplied to the space portion forming step, after the space portion corresponding to the predetermined number of slide fasteners is sequentially formed in the space portion forming step. Cutting the fastener chain based on the command from the controller, To After the completion, the control unit of the chain switching command automatically switching the supply of the next successive fastener chain on the basis of the method of manufacturing a slide fastener, characterized in that it comprises and. 2. After automatically switching to the supply of another continuous fastener chain of a different type to be manufactured next time, the supply end of the continuous fastener chain and the cut end of the previous continuous fastener chain are automatically switched. The method for manufacturing a slide fastener according to claim 1, further comprising connecting to the slide fastener. 3. When the distance between the fastener chain supply section and the space forming section is longer than the product length of the slide fastener to be manufactured, cutting of the fastener chain based on a command from the control section is performed in the final round. If the distance between the fastener chain supply section and the space forming section is shorter than the product length of the slide fastener to be manufactured, cut at the end of forming the space immediately before forming the space section. The method for manufacturing a slide fastener according to claim 1, further comprising cutting at the end of formation.