WO2007016820A1

WO2007016820A1 - A shoe air sole with its manufacturing machine and the manufactring method thereof

Info

Publication number: WO2007016820A1
Application number: PCT/CN2005/001479
Authority: WO
Inventors: Shaopei Zhuang
Original assignee: Shaopei Zhuang
Priority date: 2005-08-09
Filing date: 2005-09-15
Publication date: 2007-02-15
Also published as: CN2827065Y

Abstract

A shoe air sole has an air chamber including an air chamber wall and a support-part covered by the air chamber wall. The support-part has two surfaces and an edge separating the two surfaces. At least one of two surfaces has one or more juts contacting with the air chamber wall. There is an air room between the support-part and the air chamber wall. This invention also provides its manufacturing machine and the manufacturing method thereof.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cushion, a production apparatus therefor, and a production process, and more particularly to an air cushion for a shoe having a support body therein, and a hollow molding machine apparatus and a production process therefor. Background Art At present, there is no support body inside a shoe air cushion which is directly produced by a hollow molding machine and is provided with a gas inside. If the air cushion leaks or ruptures, causing gas leakage, the place where the air cushion is placed on the sole will be sunken. If the shoes are worn, the shoes will be unbalanced, the shoes will be scrapped, and the foot may be sprained, thus causing certain damage to the feet. hurt. Therefore, it is necessary to design an air cushion for a shoe having a support body inside to prevent the air cushion from leaking or rupturing, resulting in the occurrence of scrapping of the shoe or accidental injury of the human foot.

At present, the production process of air cushions or shoe mats for shoes is roughly divided into the following three categories:

(1) The air cushion for shoes that does not contain the support inside is generally blown out directly by using a hollow molding machine (commonly known as a blow molding machine), and its shape changes according to the mold to be opened. The specific production process includes: Locked on the mold base of the machine, the TPU material is flowed out from the die through the plasticization of the screw. The mold on the mold frame is fed into the mold through the mold transfer frame to clamp the TPU material flowing out. The cutter under the die automatically feeds the TPU material. Cut off, the mold frame is demolded to the place where the air is blown, the blow needle is inserted into the mold to blow the air, and the air is cooled while being blown. After the mold is cooled, the initial blank of the air cushion is completed, and then the edge is trimmed and pumped. Vacuum, nitrogen, and then seal, and then form a complete air cushion; but here is the blowing part, that is, in the production process of the air cushion for shoes without the support inside, the blowing needle is set in the die Next to it, and insert the mold from top to bottom and blow it.

(2) Using copper to open the mold of the desired shape, put the TPU sheet on the mold, and then press the upper and lower TPU sheets by electric heating with a high-frequency machine to fuse and fuse, then remove the trimming from the mold to form a complete Foot pad for shoes. This kind of shoe pad can also be placed into any body support, but it The inside of the shoe can no longer be vacuumed and filled with any gas, and the shoe pad pressed with high frequency is easily broken and not firm.

(3) Pulling the TPU pellets into TPU tubes through the extruder, sealing the TPU tubes at both ends by a high-frequency machine, and then bending them into a curved shape for placement into the heel of the sole, but such products are only Increases the aesthetic effect and does not achieve any cushioning effect.

It can be seen from the above that the above production process and its production equipment cannot adapt to the production of the air cushion for the shoe with the support inside, so it is also necessary to design a production method of the air cushion with the support body and the inflatable shoe and the special production thereof. Equipment to accommodate the production of this type of air cushion. SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a shoe air cushion having a support body therein to prevent the shoe from being scrapped or accidentally damaged by the air cushion due to air leakage or cracking.

Another object of the present invention is to provide a blow molding machine apparatus for manufacturing an air cushion for shoes having a support inside.

It is still another object of the present invention to provide a production process for a shoe air cushion having a support inside.

In order to achieve the above object, the present invention provides an air cushion for a shoe having a gas chamber including a gas chamber wall and a support body covered by the gas chamber wall, the support body having two faces and the two The peripheral edges of the faces, the at least one of the faces having one or more projections in contact with the wall of the plenum, and an inflatable space between the support and the wall of the plenum.

In a preferred embodiment of the invention, the plenum is constructed of a plurality of interconnected plenums.

The plenum wall may be made of a thermoplastic elastomer. In a preferred embodiment of the invention, the plenum wall is made of thermoplastic polyurethane (TPU) which is blow molded by a hollow molding machine.

The plenum wall may be a transparent body or an opaque body. In a preferred embodiment of the invention, the plenum wall is a transparent body. The above support may be made of a material such as thermoplastic rubber (TPR) or EVA (ethylene-vinyl acetate copolymer) plastic.

The above-mentioned support body and the projections on the support body thereof may have a regular or irregular shape.

The gas chamber may be filled with a gas such as air, nitrogen or the like. In a preferred embodiment of the invention, the gas chamber is filled with nitrogen.

In order to manufacture the above-mentioned air cushion for shoes having a support body, the present invention provides a hollow molding machine apparatus including a die, a mold clamping frame, an air cushion mold, a mold shifting frame, a cutter, a blowing needle, a robot, and a support body. a rack, wherein the blowing needle is disposed on the shifting frame, under the clamping frame, the needle is vertically upward, and the blowing needle is raised to a certain height when the mold is closed; the supporting body shelf is disposed at the blowing needle One side for placing the prepared support body; the above-mentioned manipulator is disposed on the same side of the air blowing needle as the support body rest, and can be moved up and down, in the direction of the blowing needle or toward the support body shelf Move to place the support on the shelf on the blow pin.

The present invention also proposes a production process for manufacturing a shoe gas raft having a support inside using the above-described hollow molding machine, which comprises the following steps:

Step one, producing a support body for the air cushion of the shoe, and placing it on the support body shelf; Step 2, the TPU material particles are plasticized from the die and flow out from the die;

Step three, the robot of the above hollow molding machine places the support body on the air blowing needle, so that the two faces of the support body are kept parallel with the air cushion mold on the clamping frame;

Step four, the air cushion mold on the clamping frame is fed into the mold through the mold shifting frame, and the blowing needle and the supporting body are simultaneously moved to the lower side of the die along with the moving mold frame;

Step 5, the blowing needle is raised, and the support body above thereof enters from the bottom up to the downstream TPU material until the support body is flush with the air cushion molds on both sides;

Step 6: After the TPU material completely encloses the support body, the air cushion mold on the mold clamping frame clamps the TPU material coated with the support body;

Step 7: The cutter under the die automatically cuts off the TPU material, the mold frame is demolded, and the blow needle is blown. Blowing air from the bottom up to let the TPU material stick to the air cushion mold and start to cool; Step 8: After the cooling is completed, the mold is used to remove the formed air cushion blank for the shoe;

Step 9: trimming and sealing the air cushion blank of the above shoe to obtain a finished air cushion for shoes. In a preferred embodiment of the present invention, in the above step 7, the cooling water is introduced into the air cushion mold so that the TPU material is cooled after being attached to the air cushion mold. In summary, the products manufactured according to the above production equipment and production process do not cause the shoes to be scrapped or the accidental damage of the human feet due to the air leakage or cracking of the air cushion, because even if the air cushion leaks or ruptures, the gas leakage occurs. However, there is also a support body inside, so it will not cause the sole to sag, and the support is also a very elastic material, which can also play a shock-absorbing cushion and will not cause damage to the human foot. In addition, in the above production equipment, the blowing needle is disposed on the shifting frame and the needle is vertically blown upward, and the manipulator can accurately place the supporting body on the blowing needle, and the internal support body is skillfully solved. Technical problems with the production of air cushions for shoes.

The above and other objects, features and advantages of the present invention will become more <RTIgt; BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of one embodiment of an air mattress for a shoe of the present invention.

Figure 2 is a side elevational view of the air cushion for the shoe of Figure 1. Figure 3 is a schematic illustration of another embodiment of an air cushion for a shoe of the present invention.

Fig. 4 is a front elevational view showing an embodiment of a support for an air cushion for shoes of the present invention.

Fig. 5 is a view showing a state in which a blowing needle is raised in an embodiment of the blow molding machine of the present invention.

Figure 6 is a schematic illustration of one embodiment of a manipulator of a blow molding machine of the present invention. The invention is further described in the following preferred embodiments, which are intended to illustrate and not to limit the invention in any way. 1 and 3 are schematic views showing the appearance of two preferred embodiments of the gas cartridge for a shoe of the present invention, and Fig. 2 is a side view of the air cushion for the shoe of Fig. 1. As can be seen from Figures 1-3, the air chamber 1 constituting the air cushion for the shoe comprises a gas chamber wall 2 and a support body 3 covered by the air chamber wall 2, and the support body 3 has two faces 4, 5 and The peripheral edge 6 separating the two faces, the two faces 4, 5 respectively have a plurality of projections 7, and the plenum wall 2 and the projection 7 are in contact with each other, and the plenum wall 2 and the support 3 There is an inflatable space 9 between them. Fig. 4 is a front elevational view of the support body 10 in another embodiment of the air cushion for shoes of the present invention. One of the faces 11 of the support body 10 can be seen in Fig. 4, on which a plurality of projections 12, 13, 14, 15, 16 are formed, wherein the projections 16 are approximately semi-circular and convex. The portions 12 and 13 are approximately circular, and the projections 14 and 15 are approximately rectangular. Fig. 5 is a schematic view showing the blowing needle as it rises in an embodiment of the blow molding machine of the present invention. Figure 6 is a schematic illustration of one embodiment of a manipulator of a blow molding machine of the present invention.

As shown in FIG. 5, the hollow molding machine of the present invention comprises a die 17, a mold clamping frame 18, an air cushion mold 19, a mold shifting frame 20, a cutter (not shown), a blowing needle 21, a robot ² 2, and a support. The body rest frame 23, wherein the air blowing needle 21 is disposed on the ejector frame 20, is obliquely below the stencil holder 18 with the needle facing upward, and the air blowing needle can be moved upward. The robot hand 22 is disposed on one side of the air blowing needle 21, and can move up and down, or can move forward in the direction of the air blowing needle 21, or can move rightward in the direction of the support body rest frame 23. The support shelf 23 is disposed on the same side of the blow needle 21 as the robot 22, and the prepared support 10 is placed on the shelf 23, and the robot 22 is used to accurately support the support on the shelf 23. It is placed on the air blowing needle 21. Referring to Fig. 5, a detailed description will be given of a production process for manufacturing the air cushion for shoes of the present invention by using the above hollow molded crucible as follows:

First, an injection machine, for example, a TPR or EVA pellet is injected onto the mold of each of the opened molds, and after cooling, the support 10 is placed inside the air chamber of the air cushion, and the support 10 is supported. After the preparation is completed, it is placed on the support rest frame 23, the robot hand 22 is moved to the right to the position of the support body rest 23, the support body 10 is picked up and moved forward to the air blowing needle 21, and then the robot 22 is moved upward. The support body 10 is accurately placed on the air blowing needle 21, so that the two faces of the support body 10 are kept parallel with the air cushion mold 19 on both sides of the support body 10; at this time, a certain amount of TPU material particles are plasticized by the screw and then The pre-set speed flows out of the die 17, and then the air-cushion mold 19 on the mold clamping frame 18 is fed into the mold 17 through the mold-moving frame 20, and the air-blowing needle 21 and the support body 10 also follow the mold-moving frame 20. Moving to the bottom of the die 17; then the blowing needle 21 is raised, and the support body 10 above it enters into the downstream TPU material from the bottom up until the support body 10 is flush with the air cushion mold 19; when the TPU material completely covers the support After the body 10, the air cushion mold 19 on the clamping frame 18 clamps and clamps the TPU material coated with the support body 10; then the cutter under the die 17 automatically cuts off the TPU material, and the mold frame 20 is demolded and blown. The gas needle 21 is blown from the bottom up to allow the TPU material to stick to the air cushion mold 19, because the air cushion mold 19 is open Cooling water, so the TPU material is pressed against the air cushion mold 19 and then starts to cool; after the cooling is completed, the mold is used to remove the formed air cushion blank; finally, the finished air cushion blank is trimmed, vacuumed, and filled with nitrogen. A subsequent step known in the art, such as sealing, obtains a finished air cushion for shoes.

It should be understood by those skilled in the art that the manufacturing process of the TPU air cushion with the support body 10 inside is only described by the preferred embodiment. However, the material of the air cushion to be protected by the present invention is not limited to the TPU, but may be other shock absorption. Functional, resilient material.

It will also be apparent to those skilled in the art that the shoe cartridge shown in Figures 1 and 3 and the support shown in Figure 4 are merely illustrative of the technical solution of the present invention. The appearance of the air cushion for shoes of the present invention and the shape, structure and the like of the inner support body are not limited to those shown in Figs. 1, 3 and 4, and the appearance of the air cushion for the shoe may be suitable for being placed on the sole, with the shoe sole or the shoe. Other shapes that are compatible with the shape; the shape and structure of the inner support may be other shapes and structures that match the shape of the air cushion and serve as a support.

In view of the technical solutions of the present invention and the description of the preferred embodiments thereof, those skilled in the art can make various possible equivalent changes or substitutions without departing from the spirit and scope of the invention, and all such changes or Substitutions are intended to fall within the scope of the claims of the present invention.

Claims

Rights request

A shoe air cushion having a gas chamber, characterized in that the gas chamber comprises a gas chamber wall and a support body covered by the gas chamber wall, the support body having two faces and separating the two faces An open periphery having at least one of the two faces having a projection that contacts the wall of the plenum, and an inflatable space between the support and the wall of the plenum.

The air cushion for shoes according to claim 1, wherein the air chamber wall is made of a thermoplastic polyurethane resin.

The air cushion for shoes according to claim 1, wherein the support body is made of thermoplastic rubber or EVA plastic.

4. The air cushion for shoes according to claim 1, wherein said air chamber is filled with nitrogen gas.

A hollow molding machine for manufacturing the air cushion for shoes according to claim 1, comprising a die, a mold clamping frame, an air cushion mold, a mold shifting frame, a cutter, a blowing needle, a robot, and a support shelf, wherein:

The blowing needle is disposed on the shifting frame, under the clamping frame, and the needle is vertically upward, and the blowing needle is raised up to a height when the mold is closed; the support shelf is disposed on one side of the blowing needle For placing the prepared support;

The manipulator is disposed on the same side of the air blowing needle and the support body shelf, and can move up and down, move in the direction of the air blowing needle or move in the direction of the support body shelf, and is used to place the support body on the shelf. Blow on the needle.

A production process for manufacturing a shoe air cushion having a support body using the blow molding machine of claim 5, comprising the steps of:

Step one, producing a support body for the air cushion of the shoe, and placing the support body on the support body shelf;

Step two, the TPU material particles are plasticized from the die and flowed out from the die; Step three, the robot of the above hollow molding machine places the support body on the air blowing needle, so that the two faces of the support body are kept parallel with the air cushion mold on the clamping frame;

Step 4, the air cushion mold on the mold clamping frame is stenciled under the die by the mold shifting frame, and the air blowing needle and the support body are simultaneously moved to the lower side of the die along with the mold moving frame;

Step 7: The cutter under the die automatically cuts off the TPU material, and the mold shifting frame is demolded, and the blowing needle is blown from the bottom up to allow the TPU material to stick to the air cushion mold and start to cool;

Step 8: After the cooling is completed, the mold is used to remove the formed air cushion blank for the shoe;

Step 9: trimming and sealing the air cushion blank of the above shoe to obtain a finished product for shoes.

7. The production process according to claim 6, wherein in the seventh step, cooling water is introduced into the gas mold so that the TPU material is cooled after being attached to the air cushion mold.