JPH11348071A - Manufacture of string product and device therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remarkably improve the productivity without using a cutter device for cutting strings and without cutting work. SOLUTION: By cutting a string S inserted in a linear groove of a mold by sliding some part of the mold, a tip part T of the string S is formed, and a synthetic resin material is injection-molded in a mold, which is formed along the tip part T of the string S by the sliding and the other mold, under the state that the tip part T is compressed, so as to integrally bond a synthetic resin molding F at the tip part T of the string S.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a string product in which a synthetic resin molded article is integrally connected to the tip of a string, such as a hand for a handbag.

[0002]

2. Description of the Related Art As a cord product in which a synthetic resin molded article is integrally connected to the tip of a cord, there is, for example, a carrying hand for a carrying bag. In recent years, this carrying hand has a string S passed through the through hole of the carrying bag up to that time, and the leading end portion T of the string S is tied to be thick, and instead of a thing which aims to prevent pulling out from the through hole, the leading end of the string is A stopper made of a synthetic resin and having a diameter smaller than the diameter of the through hole is attached to the stopper, and the stopper is inserted into the through hole of the handbag.

[0003] In this conventional cord product, after a cord is inserted into a mold, a synthetic resin is injected into the mold to form two stoppers continuously or at a fixed interval integrally with the cord. It is manufactured by cutting between two stoppers with a cutter or the like.

However, in this conventional method and apparatus for manufacturing a cord product, it is necessary to cut the space between the two stoppers with a cutter or the like. Therefore, a cutter device must be provided, and the cutting operation must be performed. There is a problem that productivity is degraded because it is required.

[0005]

The conventional method and apparatus for producing a cord product such as a hand for a carrying bag and the like require a cutter device and a cutting operation, so that the productivity is low.

[0006]

A description will be given with reference to FIGS. 1 to 8. In the method of manufacturing a cord product of the present invention, the string S inserted into the linear groove of the mold is cut by sliding a part of the mold to form a tip portion T of the string S, and the other end of the string S is formed. A synthetic resin material is injection-molded in a state where the tip T is compressed into a molding die formed along the tip T of the string S by using Formed by integrally forming a molded product F made from the same.

Further, the apparatus for manufacturing a cord product of the present invention is provided with a middle mold 10 having a straight middle groove 11 through which the string S is inserted, and is slidably provided in the middle mold 10 so as to be in a state before sliding. A slide block 20 having a slide groove 21 continuous with the middle groove 11 linearly and having a lower forming die 22 continuous with the middle groove 11 in a state after sliding;
1 and an upper molding die 32 corresponding to the lower molding die 22, the middle die 10 and the slide block 20.
From the upper mold 30 assembled from above with the upper mold 30 and the lower mold 40 in which the middle mold 10 is assembled in a vertically movable manner and the protruding plate 41 located at the tip end T of the middle groove 11 is erected. When the slide block 20 is slid, the string S is cut when the slide block 20 is slid, and a tip of a mold part 25 formed by the lower mold 22 and the upper mold 32 and a groove part 15 formed by the middle groove 11 and the upper groove 31. Prior to injecting the synthetic resin material from the injection molding machine into the portion T, the middle mold 10 is lowered, the projecting plate 41 is projected to the upper end of the middle groove 11, and the leading end T, which is the cut portion of the string S, is moved to the upper metal. A molded product F made of synthetic resin is integrally connected to a tip portion T of a string S that has been compressed with the mold 30 and has been compressed into a predetermined shape.

In this string product manufacturing apparatus, the lower mold 13 which is continuous with the slide groove 21 of the slide block 20 is formed in the middle mold 10 after the slide block 20 is slid, and the upper mold is formed. The upper groove 31 corresponding to the slide groove 21 and the upper molding die 32 corresponding to the lower molding die 13 are formed in the mold 30, and the slide groove 21 is further placed in the lower mold 40 with the middle mold 10 lowered. A protruding plate 41 protruding up to the upper end of the tip T is preferably provided upright.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described.

The manufacturing apparatus comprises a middle mold 10, a slide block 20, an upper mold 30, and a lower mold 40. The middle mold 10 has two parallel middle grooves 11 in parallel with the string S at substantially the center of the upper surface thereof. The slide block 20 is slidably provided in the middle mold 10, has a slide groove 21 linearly continuous with the middle groove 11 in a state before sliding, and a lower part continuous with the middle groove 11 in a state after sliding. It has a molding die 22. Sliding of the slide block 20 can be achieved manually by a slide bar 23 or by power from a motor.

The upper mold 30 has two upper grooves 31 formed corresponding to the middle groove 11 and an upper mold 32 formed corresponding to the lower mold 22. It is assembled from above with the one piece with the slide block 20. This assembling is accurately achieved by inserting the guide pins 12 of the middle mold 10 into the guide holes 33 formed at the four corners. Lower mold 4
Reference numeral 0 denotes an assembling of the middle die 10 via a spring 42 so as to be able to move up and down, and a protruding plate 41 located at a tip end portion T of the middle groove 11.

When the slide block 20 is slid, the string S is cut off, and is formed by a mold part 25 formed by the lower mold 22 and the upper mold 32, and the middle groove 11 and the upper groove 31. Prior to injecting the synthetic resin material from the injection molding machine into the front end T of the groove 15, the middle die 10 is lowered by the pressing force of the injection molding machine, and the projecting plate 41 is projected to the upper end of the middle groove 11 so that the string S Of the string S compressed into a fixed shape, and a molded product F made of synthetic resin is integrally joined to the tip T of the string S compressed into a predetermined shape.

In this embodiment, the middle mold 10
In the state where the slide block 20 has been slid, the lower molding die 13 which is continuous with the slide groove 21 of the slide block 20 is formed.
Are formed, and an upper mold 32 corresponding to the lower mold 13 is formed. Further, the lower mold 40 is moved to the upper end of the tip end T of the slide groove 21 with the middle mold 10 lowered. A projecting protruding plate 41 is provided upright. by this,
Two sets (four) of cord products can be manufactured at one time.

The cord product manufactured in the present embodiment is a hand for a carrying bag, and is a person who attaches a separately molded product to a molded product F made of a synthetic resin to thereby attach the molded product to the carrying bag. In addition, the string product manufactured by the present invention,
The control is not limited to the hand, and all the products formed by integrally joining a molded product F made of synthetic resin to the tip of the string S are used as a control.

The operation of the string product manufacturing apparatus according to this embodiment will be described. First, the string S is inserted into the middle groove 11 of the middle mold 10 and the slide groove 21 of the slide block 20 which are positioned linearly and continuously (see FIGS. 2 and 5). Next, the slide block 20 is slid, and the string S is cut by the shearing force between the slide block 20 and the middle mold 10 (FIGS. 3 and 6). In this state, the middle groove 1
1, the lower mold 22 of the slide block 20 is located, and the slide groove 21 of the slide block 20 is formed.
And the lower mold 13 of the middle mold 10 is located.

Next, the upper mold 30 is connected to the nozzle N of the extrusion molding machine.
And the middle mold 10 is pressed down.
At this time, the guide pin 12 of the middle mold 10 is fitted into the guide hole 33 of the upper mold 30, and the assembled posture of the upper mold 30 and the middle mold 10 is accurately secured. Also, the middle mold 10 descends against the elasticity of the spring 42 provided between the middle mold 10 and the lower mold 40. In this state, the upper groove 31 of the upper mold 30 and the middle groove 11 of the middle mold 10 face each other to form a groove 15 through which the string S is inserted. The lower mold 10 faces the lower mold 10 to form a mold portion 25.

At the same time, when the middle mold 10 is lowered, the projecting plate 41 erected from the lower mold 40 is moved to the middle mold 1.
0, the tip T of the middle groove 11 and the slide block 20
The projecting plate 41 pushes up the string S in the middle groove 11 and the slide groove 21, and compresses the upper mold 30 into a fixed shape with the upper groove 31. This shape can be appropriately set according to the shape of the middle groove 11 and the like, the projecting position of the projecting plate 41, and the like.

In this state, the molten synthetic resin material is injected from the injection molding machine, and is press-fitted into the molded portion and the tip T of the groove 15 through the gate port 34. As a result, the synthetic resin molded product F is integrally joined to the distal end portion T of the string S compressed into a fixed shape (FIGS. 4 and 7).

After the completion of the injection molding, the upper mold 30 is raised together with the nozzle N of the injection molding machine, and is projected into the lower mold 40 by inserting the rod 45 into the projected plate 41 and the projected pin located below the molded product. 43 is raised, and the string S and the molded product F are extruded upward. By taking out the combined product (string product) of the extruded string S and the molded product F, the production by the production apparatus is completed.

After cutting the starting end of the elongate belt-shaped cord S wound in a coil shape, forming a molded product T in both cutaway views, feeding the cord for a predetermined length, and re-connecting the middle groove 11 of the middle metal mold located continuously. By inserting the thread into the slide groove 21 of the slide block and performing the above-described processing again, a molded article can be formed at both ends of the string.

The insertion of the string into the middle groove 11 and the slide groove 21 and the removal of the string with the molded article T can be performed by a human hand or a robot.

[0022]

The method and apparatus for manufacturing a cord product according to the present invention do not require a cutter device for cutting the cord S or a cutting operation, so that the productivity can be greatly improved.

Further, since the distal end T of the string S is compressed and bundled into a predetermined shape and integrally joined to the synthetic resin molded product F, the distal end T of the string S is connected to the upper mold 30 or the like. It does not cause inconvenience such that it is combined with the molded product F while being sandwiched therebetween, and a part thereof jumps out of the molded product F.
The shape of the tip portion T of the string can also be set as appropriate.
The type and shape of the string S are not limited, and an effect such that any one of a band string S, a round string S, and a pipe string S can be used is also exhibited.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a string product manufacturing apparatus of the present invention.

FIG. 2 is a plan view showing a state in which a string is inserted in the apparatus shown in FIG.

FIG. 3 is a plan view showing a state where a string is cut in the device shown in FIG. 1;

FIG. 4 is a plan view showing a state where a mold is clamped in the apparatus shown in FIG. 1;

FIG. 5 is a sectional view taken along line AA in FIG. 2;

FIG. 6 is a sectional view taken along line BB in FIG. 3;

FIG. 7 is a sectional view taken along line CC in FIG. 4;

FIG. 8 is a sectional view showing a state where the mold is opened in the apparatus shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Middle metal mold 11 Medium groove 12 Guide pin 13 Lower mold 15 Groove part 20 Slide block 21 Slide groove 22 Lower mold 23 Slide rod 25 Mold part 30 Upper mold 31 Upper groove 32 Upper mold 33 Guide hole 34 Gate opening 40 Lower Mold 41 Projection plate 42 Spring 43 Projection pin 45 Projection rod S String F Molded product N Nozzle T Tip

Claims (3)

[Claims] 1. A string (S) inserted through a linear groove of a mold,
A part of the mold is cut by sliding to form a tip (T) of the string, and the tip is placed in a mold formed along the tip of the string by the slide and another mold. A method of manufacturing a cord product in which a synthetic resin material is injection-molded in a state where the part is compressed, and a synthetic resin molded product (F) is integrally joined to the tip of the cord. 2. A straight groove (1) through which a string (S) is inserted.
1) a middle mold (10) and a middle mold having a slide groove (21) which is slidably provided in the middle mold and which slides straight in the middle groove in a state before sliding and in a state after sliding. , A slide block (20) having a lower forming die (22) continuous with the middle groove, and an upper groove (3) corresponding to the middle groove.
1) and an upper mold (32) corresponding to the lower mold, and an upper mold (30) assembled from above onto an integrated body of the middle mold and the slide block, and the middle mold can be moved up and down. And a lower mold (40) having an upright protruding plate (41) positioned at the tip (T) of the middle groove, and cutting the string when sliding the slide block, thereby forming a lower mold. Prior to injecting the synthetic resin material from the injection molding machine into the tip of the mold part (25) formed by the upper mold and the mold part (25) formed by the middle groove and the upper groove, the middle mold is lowered. Then, the protruding plate is protruded to the upper end of the middle groove, and the leading end, which is the cut portion of the cord, is compressed between the upper mold and the molded part made of synthetic resin is attached to the leading end of the cord that has been compressed into a fixed shape ( A string product manufacturing apparatus obtained by integrally combining F). 3. A slide block (2) is attached to a middle mold (10).
In the state after the slide, the lower mold (13) is formed continuously with the slide groove (21) of the slide block, and the upper mold (30) has an upper groove (31) corresponding to the slide groove. An upper mold (32) corresponding to the lower mold is formed, and further, a projecting plate that projects to the upper end of the slide groove tip (T) with the middle mold lowered in the lower mold (40). The string product manufacturing apparatus according to claim 2, wherein (41) is erected.