JPS6340085B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a space portion of a slide fastener chain for a slide fastener with a releasable fitting.
This relates to an improvement in the method of attaching reinforcing tape to the area where a separable fastener is to be fixed.The reinforcing tape is used to attach an accurate core in the form of a straight rod to the core cord part located at the opposing edges of the left and right fastener tapes. The shape of the reinforcing tape can be revealed, and the reinforcing tape does not peel off from the core, or the reinforcing tape and the fastener tape come loose, and the edges of the reinforcing tape material on the front and back sides on the outside of the core string can be It is an object of the present invention to provide a method in which the adhesive portion between the edges can be located in a plan view passing through the center of the core and parallel to the fastener tape.

There is a method shown in Japanese Unexamined Patent Publication No. 57-209004 as a method for pasting reinforcing tape in the space of a slide fastener chain for a slide fastener with a releasable fitting. In order to wrap the reinforcing tape around the
The wrapping force causes the edges of the fastener tape to curve, which prevents the reinforcing tape from adhering properly, leaving wrinkles and air bubbles, which not only causes the reinforcing tape to peel off, but also to prevent openings that have been formed as parts in advance. There is a problem in attaching the insert pin and box pin, which are the detachable fittings, and it is difficult to automate the processing after pasting the reinforcing tape.

Furthermore, the winding opens the Fuasna chain,
This process has to be carried out for each fastener stringer, and has the disadvantage of poor work efficiency due to the additional steps of separating and engaging the fastener chain.

Additionally, a method has been proposed in which the reinforcing tape is bonded and cut using an adhesive, a preheated pressing die, and a cutter, but the cut ends of the reinforcing tape tend to peel off due to the heat. Due to the restoring elasticity of the reinforcing tape, there is a phenomenon in which the corner of the core string and the reinforcing tape are peeled off, and furthermore, there are disadvantages such as the adhesive extruding.

As described in the claims, the present invention provides a fixing device made of thermoplastic synthetic resin that is installed from both upper and lower sides of the reinforcing tape attachment portion in the space portion of the slide fastener chain, spanning the opposing edges of the left and right fastener tapes. A reinforcing tape base of the same size is brought into contact with the left and right fastener tapes, and the parts corresponding to the core string have linear grooves, and an ultrasonic horn with a cutting blade on the outside of the core string is used. and an anvil having a concave groove and a cutting blade on the outside of the core string,
The reinforcing tape material was pressed and subjected to ultrasonic processing, and the reinforcing tape was adhered to the entire outer circumference of the core string and the front and back surfaces of the fastener tapes adjacent to the left and right fastener tapes, and the reinforcing tape material between the core strings was cut out. By adhering the remainder of the reinforcing tape to the front and back surfaces of the left and right fastener tapes, the reinforcing tape creates an accurate straight rod-like core shape on the core string portion located at the opposing edges of the left and right fastener tapes. This prevents the reinforcing tape from peeling from the core or separating the reinforcing tape from the fastener tape, and allows the adhesive between the edges of the front and back reinforcing tape materials to pass through the center of the core. The fastener tape can be positioned in a plane parallel to the fastener tape.

The configuration will be explained below with reference to the drawings.

FIG. 1 shows a slide fastener chain 3 to which reinforcing tapes 1 and 2 are attached according to the present invention, and the reinforcing tapes 1 and 2 have a core as shown in FIGS. It is attached around the strings 4, 5 to form core parts 6, 7 having an accurate shape in the form of an integral straight bar, and the main parts of the reinforcing tape bases 8, 9, 10, 11 are attached to the front and back sides of the fastener tapes 12, 13. Adhere to both sides, core strings 4, 5 and fastener tapes 12, 13
Also at the corners 14, 15, 16, 17 formed by the reinforcing tape bases 8, 9, 10, 11,
5 and the fastener tapes 12 and 13.

In addition, the adhesive parts 22, 23 of the edges 18, 19, 20, 21 of the reinforcing tape bases 8, 9, 10, 11
is located in a plane passing through the center of the core portions 6, 7 and parallel to the fastener tapes 12, 13.

In addition, FIG. 3 shows reinforcing tape bases 24, 25,
This is an embodiment in which the end edges 28, 29, 30, 31 of 26, 27 are stacked in two layers to form protruding adhesive fins 32, 33 to improve the adhesive strength of the end edges 28, 29, 30, 31. However, the method of attachment is the same as that shown in FIG. 2, as will be described later.

FIG. 4 is a perspective view showing only the essential parts of one embodiment of the reinforcing tape supply and adhesion device used in the implementation of the present invention, and is a perspective view showing only the essential parts of one embodiment of the reinforcing tape supply and adhesion device used in carrying out the present invention. Reinforcement tape base 34, 35
is configured to be intermittently fed by supply rolls 39, 40 along transfer paths 37, 38 of the main frame 36 of the apparatus in a fixed size pattern.

Cutters 41 and 42 are disposed in front of the aforementioned transfer paths 37 and 38 in the transfer direction indicated by arrow A, and when the reinforcing tape bases 34 and 35 are fed out by a certain amount, the pressure cylinder 43 is actuated to cut the pressure. The pad 44 presses the cutters 41 and 42 to cut the reinforcing tape bases 37 and 38 into reinforcing tape bases 45 and 46 of fixed dimensions.

Cutters 41, 42 in transfer paths 37, 38
A transfer path of the slide fastener chain 3 is provided in front of the transfer paths 37, 38 at right angles to the transfer paths 37, 38. It is configured to stop at a position orthogonal to the

At a position facing the cutters 41 and 42 across the transfer path of the slide fastener chain 3,
A gripper device 49 for the cut reinforcing tape blanks 45, 46 is arranged.

The gripper device 49 has fixed jaws 50, 51.
and movable jaws 52, 53, and movable jaws 52, 5
3 and a cam portion 56 that swings around shafts 54 and 55, and these various members are as follows:
A reciprocating drive device (not shown) moves arrows B and C.
When moving forward in the direction of arrow B, the cut reinforcing tape material 45,
46 is a fixed jaw 50, 51 and a movable jaw 52,
The cam portion 56 is then inserted into the opening gap at each tip of the movable jaws 52 and 53 by a piston rod 57 of a drive cylinder (not shown).
By entering between the rear ends 58 and 59, the tips 60 and 61 of the movable jaws 52 and 53 are swung about the shafts 54 and 55, and the fixed jaws 5
0 and 51 to grip the reinforcing tape bases 45 and 46, and then the gripper device 49 is moved back in the direction of the arrow C, so that the reinforcing tape base 4
Reinforcement tape attachment part 4 of space part 47 of slide fastener chain 3 where 5 and 46 are stopped
When the cam part 56 retreats, the movable jaws 53, 54 are moved by the action of the compression spring S.
is opened to release the reinforcing tape bases 45 and 46 to the reinforcing tape mounting portion 48 of the space portion 47.

Reinforcement tape attachment part 48 in the space part 47 of the aforementioned stopped slide fastener chain 3
An ultrasonic horn 62 is arranged above the
An anvil 63 paired with an ultrasonic horn 62 is disposed below the reinforcing tape attachment site 48 .

The ultrasonic horn 62 and anvil 63 are members that carry out the main part of the method of the present invention, as will be described later.As shown in FIGS. 4 and 5, the ultrasonic horn 62 includes: space part 47
Core string 6 of fastener tapes 64 and 65 in
It has concave grooves 68, 69 for forming linear cores at positions corresponding to lines 6, 67, and cutting blades 70, 71 located outside the core strings 66, 67.
The depth of the grooves 68 and 69 is set to be half the diameter of the core to be molded.

Also, in the anvil 63, a concave groove 7 for forming a linear core is provided at a position corresponding to the core strings 66, 67.
2, 73, and cutting blades 74, 75 located outside the core strings 66, 67;
A window hole 76 for removing chips is formed between the holes 5 and 5. The depth of the grooves 72 and 73 is set to be half the diameter of the core to be molded.

The above-mentioned ultrasonic horn 62 and anvil 63 are
The reinforcing tape bases 45 and 46 are advanced as shown by arrows D and E, and are affixed to the reinforcing tape attachment portion 48 of the space portion 47 of the slide fastener chain 3, as will be described later.

At the forward position in the advancing direction of the slide fastener chain 3, which is indicated by arrow F in FIG. a die plate 77 having a built-in heater for adhering the core portion of the reinforcing tape material and the portions other than the vicinity thereof to the fastener tapes 64 and 65;
and a lower die plate 78 are disposed.

The reinforcing tape application method of the present invention, which is carried out by the reinforcing tape supply and application apparatus described above with reference to FIG. 4, consists of the following steps.

That is, as shown in FIGS. 4 and 5,
As the first step, the reinforcing tape attachment portion 4 in the space portion 47 of the slide fastener chain 3 is
From both the top and bottom of 8, tighten the left and right fastener tapes 6.
A reinforcing tape base 4 of a fixed size made of thermoplastic synthetic resin is placed across the opposing edges of the fastener tapes 4 and 65.
5 and 46 are brought into contact. This step is carried out using the transfer paths 37, 38, supply rolls 39, 40, cutters 41, 42, gripper device 49, etc. of the main frame 36 shown in FIG.

Subsequently, as a second step, the above-mentioned ultrasonic horn 6
2 and anvil 63, the reinforcing tape substrates 45, 46 and the edges of the fastener tapes 64, 65 are pressed together and subjected to ultrasonic processing.

As a result of this processing, as shown in FIG.
8, 69, 72, 73, and is integrally welded to the reinforcing tape bases 45, 46, and the linear core 7
9, 80 and located between the core strings 66, 67, that is, between the grooves 68, 69, 72, 73, the cutting blades 70, 71, 7
It is cut by the action of 4 and 75 and becomes cutting waste 81,
It is removed from the window hole 76.

The depth of the grooves 68, 69, 72, 73 of the ultrasonic horn 62 and anvil 63 is equal to the depth of the core 7.
Since the dimensions are set to 1/2 of those of 9 and 80, the cutting blades 70 and 7 can be
The cut edges of the reinforcing tape bases 45, 46 cut by the lines 1, 74, 75 are connected to the core portions 6, 7, ie, as shown by reference numerals 18, 19, 20, 21 in FIG. In Figure 6, the core 7
Pass through the center of 9, 80, fastener tape 12,
13, that is, the fastener tapes 64 and 65 are abutted in a plane parallel to each other, and in FIG.
2, 23, and in FIG.
The adhesive portion is indicated by 83.

In addition, the above-mentioned clamping by the ultrasonic horn 62 and the anvil 63 and the ultrasonic processing are performed on the entire outer circumference of the core strings 66, 67 and the fastener tapes 64, 6 near the core strings 66, 67.
5, and the remaining parts 84, 85, 86 of the reinforcing tape bases 45, 46,
87 is free from the fastener tapes 64, 65 as shown in FIG.

In the present invention, as a third step, the remaining portions 84, 85, 86, 87 of the above-mentioned reinforcing tape bases 45, 46 are
is pressed between the upper die plate 77 and the lower die plate 78 shown in FIGS. 4, 7, and 8, heated, and adhered to the front and back surfaces of the fastener tapes 64, 65. This is the slide fastener chain 3 shown in FIG.

In the embodiment described above, the cutting blades 70, 71, 74, 75 of the ultrasonic horn 62 and the anvil 63 are
constitute the outer edges of the grooves 68, 69, 72, 73, respectively, so that the core portions 6, 7, 79, 80 having the shapes shown in FIGS. 2 and 8 are formed. By placing the blade slightly away from the outer edge of the groove, adhesive fins 32 and 33 can be formed as shown in Figure 3, improving the adhesion strength between the reinforcing tape and the fastener tape. It is possible to do so.

The method of the present invention has the above-described structure, and since the reinforcing tape is bonded in the state of a fastener chain from both the upper and lower sides over the left and right fastener tapes, the opposing edges of the left and right fastener tapes in the space part Another advantage is that the core can be formed into a straight rod-like, accurate shape to which a butterfly pin or box rod can be easily attached, using the core string.

In addition, peeling of the core string and reinforcing tape at the core,
This has the effect of forming a strong reinforcing tape attachment part that does not cause separation of the reinforcing tape and the fastener tape.

Then, the adhesive parts between the edges of the front and back reinforcing tapes are positioned in a plane that passes through the center of the core and parallel to the fastener tape, forming a reinforcing tape attachment part with a good appearance, and reinforcing the space between the core strings. Since the tape portion is removed, it also has the effect of improving workability.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an example of a sliding fastener chain manufactured according to the present invention, Fig. 2 is an enlarged cross-sectional view of the main part taken along the line - in Fig. 1, and Fig. 3 is the one shown in Fig. 2. An enlarged sectional view of the main part of another slide fastener chain shown in the same position as
FIG. 4 is a schematic perspective view showing only the essential structure of one example of an apparatus for carrying out the present invention, FIG. 5 is an enlarged sectional view showing the first step of the present invention, and FIG. 6 is a second step of the present invention. FIG. 7 is an enlarged sectional view showing a state immediately before the start of the third step of the present invention, and FIG. 8 is an enlarged sectional view showing the third step of the present invention. 1, 2: Reinforcement tape, 3: Slide fastener chain, 4, 5: Core string, 6, 7: Core, 8, 9,
10, 11: Reinforcement tape base, 12, 13: Fastener tape, 18, 19, 20, 21: Edge of reinforcement tape, 22, 23: Adhesive part, 62: Ultrasonic horn, 63: Anvil, 47: Space part , 48: Reinforcement tape attachment site, 70, 71, 7
4,75: Cutting blade.

Claims (1)

[Claims] 1.Abut a thermoplastic synthetic resin reinforcement tape base of a fixed size from both the upper and lower sides of the reinforcing tape installation part in the space part of the slide fastener chain, straddling the opposing edges of the left and right fastener tapes, and then an ultrasonic horn having a linear groove in a portion corresponding to the core cord and a cutting blade on the outside of the core cord; and an anvil having a linear groove in the portion corresponding to the core cord and a cutting blade on the outside of the core cord. Accordingly,
The reinforcing tape material is pressed and subjected to ultrasonic processing to adhere the reinforcing tape to the entire outer periphery of the core strings of the left and right fastener tapes and the front and back surfaces of the fastener tapes adjacent thereto, and the reinforcing tape material between the core strings is removed. A method for attaching a reinforcing tape to a slide fastener with a releasable fitting, characterized by adhering the remaining part of the reinforcing tape to the front and back surfaces of left and right fastener tapes.