JPH0838215A - Manufacture of shoe instep member and shoe - Google Patents

Abstract

PURPOSE:To provide a method capable of manufacturing a curved shape such as the toe part, etc., of a shoe instep member with shape holding performance and without wrinkling. CONSTITUTION:Thermoplastic shape holding members 12 and 14 are mounted respectively on the toe part and the heel part of an instep member 10. After sewing an insole down on the instep member in French seam, it is hanged on a heated shoe pattern 22. Water 31 is atomizingly sprayed from a nozzle 25 to the toe part of the instep member 10. Wrinkles are eliminated by rubbing the side of the toe part with a roller 29.

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 shoe lacquer, which is capable of forming a curved shape such as a toe portion with good shape retention and without wrinkling.

[0002]

2. Description of the Related Art A conventional shoe has been made by covering a shoe mold with a flat cover and a cover of which an insole is sewn into a shoe as it is, and by attaching an outer sole by injection molding or the like. For this reason, in the finished shoe, the toe part and the heel part are easily deformed into a flat shape or the like, and the appearance is significantly deteriorated.

Therefore, as a method of improving the shape retention of the toe part and the heel part, a sheet-shaped thermoplastic resin is attached to the toe part of the hem, and the hem is heated and pressed by a heated shoe mold. There was a method of curve-molding with a thermoplastic resin.

[0004]

SUMMARY OF THE INVENTION In the above-mentioned conventional method of using a thermoplastic resin as a shape-retaining material to heat and pressurize a cloak with a heated shoe mold, the curve of the curved portion is tight. In some cases, the curved portion was wrinkled during heating and pressurization, or the shape collapsed when trying to return to a flat shape after molding.

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems in the prior art and to provide a method of manufacturing a shoe lace and a shoe manufacturing apparatus which have good shape retention and are less likely to wrinkle.

[0006]

The method according to claim 1,
A leather cover and an insole in which a thermoplastic resin is arranged in a portion to be curved-formed are sewn in a bag shape and suspended in a shoe mold, and the shoe mold is heated to form the curved cover of the cover. It is characterized in that moisture is adhered to the portion from the outside to curve-form the portion.

The method according to claim 2 is characterized in that after or while adhering the moisture, the portion of the armor cover to be curved is pressed from the outside by a pressing means or a striking means or is rubbed or tapped while being pressed. It is what

The apparatus according to claim 3 comprises a heater,
It is provided with a leather cover sewn in a bag shape, a shoe mold on which the insole is suspended, and a nozzle for spraying water or steam toward the curved portion of the shoe mold.

According to a fourth aspect of the present invention, the shoe last is divided into a toe portion and a heel portion, and the toe portion and the heel portion are configured to be movable in a direction to move toward and away from each other. It further comprises a driving source for driving the heel portions in a direction of approaching and separating from each other.

According to a fifth aspect of the present invention, the apparatus further comprises pressing means or striking means for pressing or rubbing or striking while pressing the curved portion of the armor cover.

In the present invention, "leather" means
In addition to natural leather, artificial leather such as synthetic leather (woven fabric base) and artificial leather (nonwoven fabric base) is included.

[0012]

According to the method of the present invention, the scabbard and the insole are sewn into a bag and then hung in a shoe mold, and the shoe mold is heated. (Water drops,
(Steam, steam, etc.) is applied by spraying, spraying, dripping, etc., so the hood covers soften when it touches water and softens, and fits well on the shoe mold, and even if the curved curve is tight It can be molded into a curved shape without getting closer. Moreover, since the thermoplastic resin is heated and softens in a state in which the armor cover is well fit to the shoe mold, the thermoplastic resin itself also fits well to the shoe mold, and by cooling after molding, the thermoplastic resin hardens and the desired curvature is obtained. The shape can be retained. Moreover, since the cover and the insole are sewn together before being curved-formed, sewing is easy.

According to the method of claim 2, after or while adhering the moisture, the portion of the armor cover to be curved is pressed from the outside with the pressing means or the striking means or rubbed or tapped while being pressed, so that The cover and the thermoplastic resin can be made to fit better to the shoe mold, and a crepe cover with less wrinkles and good shape retention can be produced.

According to the third aspect of the present invention, the bag-sewn cover is suspended in the shoe mold and water or steam is sprayed from the nozzle onto the cover, so that the cover touches moisture and softens. Even if the curve fits well in the shoe mold and the curved portion is tight, it can be molded into a curved shape without wrinkling. Moreover, since the thermoplastic resin is heated and softens in a state in which the armor cover is well fit to the shoe mold, the thermoplastic resin itself also fits well to the shoe mold, and by cooling after molding, the thermoplastic resin hardens and the desired curvature is obtained. The shape can be retained.

According to the fourth aspect of the present invention, by dividing the shoe last into the toe portion and the heel portion, and driving them by the driving source in the direction in which they are separated from each other, the garment cover can be made to fit better to the shoe last. , It is possible to make a crepe that is more wrinkle-free and has good shape retention.

According to the apparatus of claim 5, after the water or steam is blown by the nozzle or while being blown, the curved portion of the covering is pressed from the outside by the pressing means or the hitting means or rubbed or tapped while being pressed. As a result, the scabbard and the thermoplastic resin can be made to fit better to the shoe mold, and a scabbard with less wrinkles and good shape retention can be produced.

[0017]

Embodiments of the present invention will be described below. 1 to 4
Shows steps (1) to (9) of one embodiment of the present invention. Here, the present invention is applied to the molding of the toe portion. Each step will be described.

(1) Mounting of thermoplastic shape-retaining members Before mounting the insole, the thermoplastic shape-retaining members 12, 14 (here) are attached to the toe part 10b and the heel part 10c of the surface of the leather covering 10. Then, it is configured so as to also have a function as a reinforcing member (12: toe core, 1
4: heel reinforcement member). ) Is attached. The thermoplastic shape-retaining members 12 and 14 are, for example, thermoplastic resin sheets of vinyl chloride, EVA, styrene, urethane, etc., thermoplastic rubber sheets of polybutadiene, styrene-butadiene copolymer, etc., or woven or non-woven fabrics of these resins. What was impregnated in can be used. Thermoplastic shape retention member 1
The reference numerals 2 and 14 are attached to predetermined positions of the cover 10 by pressure bonding by heat and pressure, adhesion, sewing or the like. The thermoplastic shape-retaining members 12 and 14 can be attached not only to the front surface of the cover 10 but also to the back surface or the intermediate layer (between the front cover and the back cover).

(2) Insole sewn on the insole The insole 16 made of a laminated cloth, synthetic resin leather, fiber board, non-woven fabric, etc. is prepared.
The stitches are sewn with a lock stitch, an overlock stitch, a zigzag stitch, an overlock stitch, or the like to complete the lace cover 20. Easy to sew because it is before curve forming.

(3) Suspended in a shoe mold for garment molding When the bag is sewn, wrinkles are formed in the bag sewn part, the toe part deforms flat, and the outer bottom is worn as it is, The result is very bad-looking shoes.

Therefore, here, the sewn cover 2 is sewn with a bag.
0 is suspended in the shoe mold 22 for molding. This shoe last 22 is made of metal and is divided into a toe partial shoe last 22a and a heel portion 22b. The heel partial shoe last 22b moves up and down by an air cylinder 23 to move the toe partial shoe last 2
It is arranged so that it can approach and separate from 2a.蛛 cover 2
After suspending 0 in the shoe mold 22, the air cylinder 23 is extended, and the heel partial shoe mold 22b is moved downward to keep the garment cover 20 in a state of being pulled vertically with a constant force. The covering 20 is brought into close contact with the shoe mold 22. In addition, since the distance between the toe partial shoe mold 22a and the heel partial shoe mold 22b can be adjusted, it can be adapted to shoes of various sizes.

The heater 1 is provided on the toe part of the toe part shoe mold 22a and the heel part of the heel part shoe mold 22b.
9 and 21 are incorporated respectively. Shoe Mold for Mold 2
A nozzle 25 is arranged above 2 to face the toe portion of the covering object 20.

Pressing devices 27 are arranged on both sides (or one side) of the shoe-molding shoe mold 22 so as to be movable around the toe portion of the shoe mold 22. A roller 29 is rotatably disposed on the pressing means 27 with its peripheral surface pressed against and brought into contact with the thermoplastic shape retaining member 12. In addition, shoe mold 2 for molding
It is also possible to install several 2s side by side in a rotary table system and perform molding continuously.

(4) Water droplet spraying and heating When forming the covering object 20, the heaters 19 and 2 are previously formed.
1 is energized to keep the shoe mold 22 for molding under heating at a predetermined molding temperature (for example, 80 to 120 ° C., which can be arbitrarily set depending on the type of the covering 20), and the air cylinder 23. To cover the cover 20 with the shoe mold 2 for molding the cover.
Hang on 2. Then, the air cylinder 23 is extended to pull the roof covering body 20 in the vertical direction so as to be brought into close contact with the lace molding shoe mold 22. In this state, water 31
Is sprayed in a mist state and is sprayed on the toe part of the scab 20. As a result, the toe portion of the covering object 20 comes into contact with moisture, so that the toe portion is softened. In addition, the thermoplastic shape-retaining member 1
2 and 14 are also heated and softened. Therefore, the subject 2
0 is in a state of being well fit to the shoe mold 22. Note that instead of spraying water, steam (including steam-like ones) may be sprayed.

(5) Roller dripping After spraying the water 31, the roller 29 is rubbed while strongly pressing it against the side surface of the toe part of the covering body 20. With this,
The wrinkles on the toe portion are further stretched and formed into a smooth curved shape so that the wrinkles fit better to the shape of the shoe mold 22. Instead of the roller 29, a striking means such as a plastic hammer may be provided to automatically or manually strike the side surface of the toe portion of the crepe body 20 to extend the wrinkle. The moisture adhering to the roof covering 20 is evaporated by heating from the shoe mold 22 while the roller is being worn. As described above, the molding 20 is formed.

(6) Suspending on the outer sole molding shoe mold After the molding of the roof covering body 20 is completed, the roof covering body 20 is released from the roof covering body molding shoe mold 22 to form the outer bottom molding shoe mold. Hang on 28.

(7) Outer Sole Molding The outer sole molding shoe mold 28 is set on a molding machine, and the outer sole 38 is put on by a cementing method, a vulcanize method, an injection method, or the like to complete the shoe 39.

(8) Cooling After that, the shoe mold 28 is removed from the molding machine, placed on the shoe mold fixing plate 30, transferred to the conveyor 32, and passed through the cooling dome 40 for a certain period of time. The cooling dome 40 is installed so as to cover the conveyor 32 and has a length of 3 to, for example.
At 5 m, a cold air tube 42 is installed on the inner wall surface of the shoe, and cold air is blown from the cold air tube 42 toward the shoe 39 and the shoe last 38 to cool the shoe 30. The temperature inside the cooling dome 40 is maintained at, for example, 5 to 10 ° C. While the covering 10 passes through the inside of the cooling dome 40 (the staying time is, for example, 3 to
After being cooled for 5 minutes, the thermoplastic shape-retaining members 12 and 14 are cured, and the shape is maintained in the molded state. Because it is forcibly cooled,
The waiting time is shorter than that of waiting for it to cool naturally, and the productivity is high. The staying time in the cooling dome 40 can be appropriately selected according to the type of the covering object. Further, the cooling method is not limited to the above-mentioned method, and a coolant can be passed through the shoe mold 28 to cool it from the inside.

(9) Demolding and Completion After the cooling process is completed, the shoe 39 is demolded from the shoe mold 28 to complete the entire process.

As described above, after the garment cover 10 and the insole 16 are sewn with a bag, the garment cover shoe mold 22 that has been heated is covered with water and sprayed with water, and is pushed by the roller 29 or a hammer, or rubbed while pushing. Since it hits, the covering 10 is the shoe mold 22.
It is possible to prevent it from getting used to, wrinkling, and being hung in a distorted state such as the toe. Therefore, the outer bottom 38 can be accurately attached to the roof body 20,
Even when the finished shoe is released from the outsole molding die 28,
Toe part 10b and heel part 10c (especially the mouth 42)
The result is a well-formed shoe with very good appearance.

In the above embodiment, the present invention was used to curve-form the toe portion, but it can also be used to form the heel portion and other curved portions. Further, the thermoplastic resin is not limited to the sheet shape.

[0032]

As described above, according to the method described in claim 1, after the sack and the insole are sewn in a bag, they are suspended in the shoe mold and heated by the shoe mold, and Moisture adheres to the part to be curved from the outside, so the hood will soften by touching the water and soften and fit well to the shoe mold, and even if the curve of the curved part is tight, it will be curved without wrinkling can do. Moreover, since the thermoplastic resin is heated and softens in a state in which the armor cover is well fit to the shoe mold, the thermoplastic resin itself also fits well to the shoe mold, and by cooling after molding, the thermoplastic resin hardens and the desired curvature is obtained. The shape can be retained. Moreover, since the cover and the insole are sewn together before being curved-formed, sewing is easy.

According to the method of claim 2, after the moisture is adhered or while the moisture is adhered, the curved portion of the hood is pressed from the outside with the pressing means or the striking means, or the rubbing or tapping is performed while pressing the crepe. The cover and the thermoplastic resin can be made to fit better to the shoe mold, and a crepe cover with less wrinkles and good shape retention can be produced.

According to the third aspect of the invention, the bag-sewn cover is suspended in a shoe mold and water or steam is sprayed from the nozzle onto the cover, so that the cover comes into contact with moisture and softens. Even if the curve fits well in the shoe mold and the curved portion is tight, it can be molded into a curved shape without wrinkling. Moreover, since the thermoplastic resin is heated and softens in a state in which the armor cover is well fit to the shoe mold, the thermoplastic resin itself also fits well to the shoe mold, and by cooling after molding, the thermoplastic resin hardens and the desired curvature is obtained. The shape can be retained.

According to the fourth aspect of the present invention, the shoe last is divided into the toe portion and the heel portion and driven by the driving source in the direction in which they are separated from each other. , It is possible to make a crepe that is more wrinkle-free and has good shape retention.

According to the apparatus of claim 5, after the water or steam is blown by the nozzle or while being blown, the curved portion of the covering is pressed from the outside by the pressing means or the hitting means or rubbed or tapped while being pressed. As a result, the scabbard and the thermoplastic resin can be made to fit better to the shoe mold, and a scabbard with less wrinkles and good shape retention can be produced.

[Brief description of drawings]

FIG. 1 is a process drawing (up to a halfway) showing an embodiment of the present invention.

FIG. 2 is a process diagram showing the continuation of FIG.

FIG. 3 is a process diagram showing the continuation of FIG. 2;

FIG. 4 is a process chart showing the continuation of FIG. 3;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Cushion 12 Thermoplastic shape-retaining member (toe core, thermoplastic resin) 14 Thermoplastic shape-retaining member (heel reinforcing agent, thermoplastic resin) 16 Insole 22 Shoe-form (shoes) 22a Toe shoe Mold 22b Roller (pressing means) 23 Air cylinder (driving source) 29 Roller (pressing means) 31 Water

Claims (5)

[Claims] 1. A leather cover and an insole, in which a thermoplastic resin is arranged in a portion to be curved and formed, are sewn in a bag shape and hung on a shoe mold, and the shoe mold is brought into a heated state. A method for manufacturing a shoe lacquer cover, wherein moisture is adhered to the curved portion of the cover from the outside to curve-form the portion. 2. The rubbing or tapping method according to claim 1, wherein after the water is applied, or while the water is being applied, the portion of the cover to be curved is pressed from the outside by pressing means or hitting means or rubbed or tapped while being pressed. Method for manufacturing shoe lace. 3. A leather type cover provided with a heater and sewn into a bag shape, a shoe type in which an insole is suspended, and a nozzle for spraying water or steam toward a curved portion of the shoe type. Equipment for manufacturing shoe covers. 4. The shoe last is divided into a toe portion and a heel portion, and the toe portion and the heel portion are close to each other,
4. The apparatus for manufacturing a shoelace according to claim 3, further comprising a drive source configured to be movable in a direction of separating from each other and driving the toe part and the heel part in a direction of approaching and separating from each other. 5. An apparatus for manufacturing a shoelace according to claim 3, further comprising a pressing means or a striking means for rubbing or striking while pressing or pressing the curved portion of the shoelace.