Sole production method

Abstract

The invention discloses a shoe sole production method which comprises the following steps: step 1, making a first raw material into a first shoe sole part, arranging an inner tube on the inner wall of an inner cavity of the first shoe sole part, and forming reinforcing ribs on two sides of the inner tube; a second raw material is made into a second sole component, an inner pipe is arranged on the inner wall of an inner cavity of the second sole component, and reinforcing ribs are formed on the two sides of the inner pipe; step 2, heating the open end of the first sole part and the end part of the inner pipe of the first sole part; heating the opening end of the second sole part and the end part of the inner pipe, so that the opening end of the second sole part and the end part of the inner pipe are melted; 3, the first shoe sole part and the second shoe sole part are enclosed, the opening ends of the first shoe sole part and the second shoe sole part and the ends of the corresponding inner pipes are bonded and spliced to form a hollow shoe sole body and an elastic pressing pipe fixedly arranged in an inner cavity of the shoe sole body, the air shoe sole is produced in a simple and reliable splicing mode, the processing difficulty of the air shoe sole is reduced, and the production efficiency is improved. The large-scale production of the air shoe sole is favorably realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shoe sole, in particular to a shoe sole production method. BACKGROUND

[0002] In the current design of sports shoes, in order to improve the rebound performance of the shoe sole, solid elastomers or structures filled with foaming materials in key areas are mainly used. However, the energy feedback efficiency of such dense structures is limited by the physical properties of the materials, and there are generally problems of rebound response lag and insufficient rebound force, which is difficult to meet the demand of high-intensity sports for immediate and abundant energy feedback.

[0003] On the other hand, the inflatable shoe sole structure can effectively improve the shock absorption and rebound response, and overcome the efficiency limitation of the solid structure. However, the molding of the internal air chamber has very high requirements on the manufacturing process, which leads to challenges in reliably and economically molding such structures and makes it difficult to achieve stable mass production. SUMMARY

[0004] Therefore, the present application provides a shoe sole production method to solve the problem that the inflatable shoe sole in the prior art is difficult to achieve stable mass production.

[0005] To achieve one or part or all of the above purposes or other purposes, the present application provides a shoe sole production method, comprising:

[0006] Step 1, a first raw material is molded by injection molding to form a first shoe sole part with a one-side opening inner cavity, and two ends of an inner tube are provided on the inner wall of the inner cavity of the first shoe sole part in the same direction, and a reinforcing rib is formed on both sides of the inner tube;

[0007] A second raw material is molded by injection molding to form a second shoe sole part with a one-side opening inner cavity, and two ends of an inner tube are provided on the inner wall of the inner cavity of the second shoe sole part in the same direction, and a reinforcing rib is formed on both sides of the inner tube;

[0008] Step 2, heating the opening end of the first shoe sole part and the end of the inner tube to melt the opening end of the first shoe sole part and the end of the inner tube;

[0009] Heating the opening end of the second shoe sole part and the end of the inner tube to melt the opening end of the second shoe sole part and the end of the inner tube;

[0010] Step 3, enclosing the first shoe sole part and the second shoe sole part to make the opening ends and the corresponding inner tube ends of the two parts adhere to each other to form an inner empty shoe sole body and a spring tube fixed in the inner cavity of the shoe sole body.

[0011] Preferably, the step 1 further comprises that the end of the first shoe sole part is connected with a first half pipe communicating with the inner cavity thereof, and the end of the second shoe sole part is connected with a second half pipe communicating with the inner cavity thereof.

[0012] The step 2 further comprises heating the cross-section end of the first half pipe to melt the cross-section end, and heating the cross-section end of the second half pipe to melt the cross-section end.

[0013] The step 3 further comprises splicing the first half pipe and the second half pipe into the air nozzle communicating with the inner cavity of the sole body.

[0014] The sole production method further comprises a step 4, inflating the inner cavity of the sole body through the air nozzle to make the sole body swell, and then hot-pressing to close the air nozzle.

[0015] Preferably, the inflation pressure is 0.01-0.1 Mpa.

[0016] Preferably, the air nozzle is hot-pressed by a high-frequency machine.

[0017] Preferably, the hot-pressing temperature is 180-240 degrees.

[0018] Preferably, the step 3 further comprises cutting off the excess glue at the splicing position of the sole body.

[0019] Preferably, the sole production method further comprises a step 5, polishing and trimming the surface of the sole body.

[0020] Preferably, the first sole part is injection molded in a first mold by an injection molding machine, and the second sole part is injection molded in a second mold by the injection molding machine.

[0021] Preferably, the first raw material and the second raw material are both TPU materials.

[0022] Preferably, the hardness of the first sole part and the second sole part is 85A-90A.

[0023] By implementing the embodiments of the present application, the following beneficial effects can be achieved:

[0024] After adopting the above-mentioned sole production method, the open ends of the first sole component and the second sole component are melted by heating, so that the first sole component and the second sole component, and the corresponding inner tubes and inner tubes can be spliced ​​together through the melted open ends. After cooling, the first sole component and the second sole component are fixed to form a sole body with a hollow interior, and the corresponding inner tubes and inner tubes are connected to form a spring-loaded tube fixedly arranged along the minor axis direction of the sole body. In this embodiment, the inner cavities of the first sole component and the second sole component are both provided with a plurality of inner tubes distributed along the major axis direction, so that a plurality of spring-loaded tubes distributed along the major axis direction of the sole body can be spliced ​​together. The evenly distributed spring-loaded tubes provide a uniform elastic supporting force for the upper side wall of the sole body, and the elastic force of the material itself is combined with the reaction force generated by the compressed air. This overcomes the problems of delayed rebound response and insufficient rebound force in conventional soles due to the fact that the rebound completely depends on the physical properties of the material itself. The air sole is produced by a simple and reliable splicing method, which reduces the processing difficulty of the air sole and facilitates the large-scale production of the air sole. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] in:

[0027] Figure 1 is a flow chart of the present invention;

[0028] Figure 2 A three-dimensional diagram of the present invention when viewed from above;

[0029] Figure 3 They are respectively a transverse cross-sectional view and a longitudinal cross-sectional view of the present invention.

[0030] In the figure: 1. sole body; 2. first sole component; 3. second sole component; 4. inner tube; 5. spring-pressed tube; 6. reinforcing rib. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this invention belongs. The terms used in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the accompanying drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of the present invention and the accompanying drawings are used to distinguish different objects, not to describe a specific order.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0034] like Figure 1-3 As shown, a sole production method includes:

[0035] Step 1: A first sole component 2 having an inner cavity open to one side is formed from a first raw material by injection molding, wherein an inner tube 4 with two ends extending therethrough is provided in the same direction on the inner wall of the inner cavity of the first sole component 2, and reinforcing ribs 6 are formed on both sides of the inner tube 4;

[0036] The second raw material is made into a second sole component 3 having an inner cavity open to one side by injection molding, and an inner tube 4 with two ends passing through is arranged in the same direction on the inner wall of the inner cavity of the second sole component 3, and reinforcing ribs 6 are formed on both sides of the inner tube 4;

[0037] Step 2: heating the open end of the first sole component 2 and the end of the inner tube 4 to melt the open end of the first sole component 2 and the end of the inner tube 4;

[0038] heating the open end of the second sole component 3 and the end of the inner tube 4 thereof to melt the open end of the second sole component 3 and the end of the inner tube 4 thereof;

[0039] Step 3: Enclose the first sole component 2 and the second sole component 3 so that their open ends and corresponding inner tube 4 ends are adhered and assembled to form a hollow sole body 1 and a spring-pressed tube 5 fixed in the inner cavity of the sole body 1.

[0040] Specifically, the first sole component 2 and the second sole component 3 refer to two parts obtained by dividing the sole along the long axis and the longitudinal direction; when a user wears a shoe equipped with the sole for walking or running and jumping, the downward pressure of the foot will drive the sole body 1 to deform, and the deformed side wall of the sole body 1 will compress the air in its inner cavity. At the same time, the upper side wall of the downwardly moving sole body 1 can be used together with the lower side wall to squeeze the side wall of the elastic tube 5 through the reinforcing rib 6, so that the side wall of the elastic tube 5 is concave and deformed, forcing the air in the elastic tube 5 to be discharged through its two ports. When the downward pressure is released (i.e., when lifting the leg or jumping), the elastic tube 5 will release energy to reset, and the compressed air in the inner cavity of the sole body 1 will release reaction force, driving the sole to quickly elastically reset, providing cushioning and assistance for the user's movement.

[0041] In this embodiment, the wall thickness of the sole body 1 is 0.8-2.5 mm, such as 1.2 mm, 1.6 mm, 1.8 mm, and 2 mm, and can be adjusted according to the actual sole size produced so that the bearing capacity and elasticity of the sole can be used by people of different heights and weights.

[0042] In this embodiment, the open ends of the first sole component 2 and the second sole component 3 are melted by heating, so that the first sole component 2 and the second sole component 3, and the corresponding inner tubes 4 and the inner tubes 4 can be spliced ​​together through the melted open ends. After cooling, the first sole component 2 and the second sole component 3 are fixed to form a hollow sole body 1, and the corresponding inner tubes 4 and the inner tubes 4 are connected to form a spring-pressed tube 5 fixedly arranged along the minor axis direction of the sole body 1. In this embodiment, the inner cavities of the first sole component 2 and the second sole component 3 are both distributed along the major axis direction with a plurality of inner tubes. The tube 4 can be assembled into multiple spring-pressure tubes 5 distributed along the long axis direction of the sole body 1, so that the evenly distributed spring-pressure tubes 5 provide uniform elastic support force for the upper side wall of the sole body 1, combining the elastic force of the material itself with the reaction force generated by the compressed air, overcoming the problems of delayed rebound response and insufficient rebound force in conventional soles due to the fact that the rebound completely depends on the physical properties of the material itself. The air sole is produced by a simple and reliable assembly method, which reduces the processing difficulty of the air sole and is conducive to the large-scale production of the air sole.

[0043] In the present embodiment, the port melting and splicing operation of the first sole component 2 and the second sole component 3 are completed by a splicing device, which specifically includes two profiling molds, a heating plate and a driving device. The two profiling molds are respectively adapted to the embedding of the first sole component 2 and the second sole component 3. The two profiling mold openings are relatively arranged and can be coaxially translated under the driving of the corresponding driving device. The heating plate is vertically arranged and can be translated between the two profiling molds under the driving of the corresponding driving device. When in use, the first sole component 2 and the second sole component 3 are first embedded in the corresponding profiling molds, and then the driving device first causes the heating plate to move horizontally between the two profiling molds, and then drives the two profiling molds to translate toward each other until the first sole component 2 and the second sole component 3 are respectively embedded in the corresponding profiling molds. The open end of the bottom member 2 and the inner tube 4 ends thereof, the open end of the second sole component 3 and the inner tube 4 ends thereof all abut against the heating plate, and the high temperature of the heating plate will melt the corresponding contact surface. Subsequently, the heating plate retreats under the driving of the driving device, avoiding the two profiling dies. Finally, the two profiling dies further move toward each other under the driving of the driving device, until the first sole component 2 and the second sole component 3 are enclosed, the open ends of the two and the corresponding inner tube 4 ends are adhered to each other and spliced ​​together, forming the interior hollow sole body 1 and the elastic pressure tube 5 fixed in the sole body 1 inner cavity, so as to replace the manual splicing operation by machinery, improve the accuracy and efficiency of operation, and the above-mentioned splicing equipment can be purchased through market channels and is not specifically described in the present embodiment.

[0044] Furthermore, step 1 further includes connecting the end of the first sole component 2 with a first half tube communicating with the inner cavity thereof, and connecting the end of the second sole component 3 with a second half tube communicating with the inner cavity thereof;

[0045] Step 2 also includes heating the cross-sectional end of the first half of the tube to melt the cross-sectional end, and heating the cross-sectional end of the second half of the tube to melt the cross-sectional end;

[0046] Step 3 also includes assembling the first half tube and the second half tube to form an air nozzle communicating with the inner cavity of the sole body 1;

[0047] The sole production method also includes step 4, inflating the inner cavity of the sole body 1 through an air nozzle to make the sole body 1 swell, and then hot-pressing and closing the air nozzle to give the inner cavity of the sole body 1 a higher original air pressure through inflation, so that the sole body 1 can respond faster when squeezed and increase the rebound force.

[0048] Furthermore, the inflation pressure is 0.01 MPa-0.1 MPa, such as 0.015 MPa. This pressure range can take into account the durability of the sole body 1 and ensure its resilience.

[0049] Furthermore, the air nozzle is closed by heat pressing using a high-frequency machine. The high-frequency machine is equipped with a heat pressing head and a placement platform. When in use, the air nozzle is laid flat on the placement platform and extended below the heat pressing head of the high-frequency machine. The air nozzle and the air pump are then connected through an air needle and a hose. Air is pumped into the inner cavity of the sole body 1 through the air pump. When the air pressure reaches a preset value, the high-frequency machine drives the heat pressing head downward to heat press the air nozzle, thereby quickly closing the air nozzle and keeping the sole body 1 in an inflated state. Finally, the air needle is pulled out and the excess part of the air nozzle is cut off to keep the front end of the sole body 1 smooth.

[0050] Furthermore, the hot pressing temperature is 180-240 degrees. This temperature range is compatible with the melting points of various plastic materials and can quickly heat the air nozzle part to make it adhere and close.

[0051] Furthermore, step 3 also includes cutting off the overflow glue at the joint of the sole body 1, which can be cut off manually or by equipment, such as setting a knife edge on the contoured mold in the above-mentioned splicing equipment to cut off the overflow glue. This is the existing technology and will not be elaborated in this embodiment.

[0052] Furthermore, the sole production method further includes step 5, grinding and trimming the surface of the sole body 1.

[0053] Furthermore, the first sole component 2 is injection molded in a first mold by an injection molding machine, and the second sole component 3 is injection molded in a second mold by an injection molding machine. Injection molding has the core advantages of high efficiency, precision, flexibility and low cost, and can be well adapted to large-scale production and manufacturing.

[0054] Furthermore, the first raw material and the second raw material are both transparent TPU materials, and can also be PU, TPE, TPEE and other materials, so that production personnel can observe the splicing of the inner tube 4, and at the same time can make the product have a perspective visual effect, thereby enhancing visual impact.

[0055] Furthermore, the hardness of the first sole component 2 and the second sole component 3 is 85A-90A. The hardness in this range can better balance the support force and toughness of the sole.

[0056] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A method for producing a sole, characterized in that: include: Step 1: forming a first sole component having an inner cavity open to one side from a first raw material by injection molding, wherein an inner tube with two through ends is provided in the same direction on the inner wall of the inner cavity of the first sole component, and reinforcing ribs are formed on both sides of the inner tube; The second raw material is made into a second sole component having an inner cavity open to one side by injection molding, and an inner tube with two ends passing through is arranged in the same direction on the inner wall of the inner cavity of the second sole component, and reinforcing ribs are formed on both sides of the inner tube; Step 2: heating the open end of the first sole component and the end of the inner tube thereof to melt the open end of the first sole component and the end of the inner tube thereof; heating the open end of the second sole component and the end of the inner tube thereof to melt the open end of the second sole component and the end of the inner tube thereof; Step 3: Enclose the first sole component and the second sole component so that their open ends and corresponding inner tube ends are adhered and spliced ​​together to form a hollow sole body and a spring-pressed tube fixed in the inner cavity of the sole body.

2. A sole production method according to claim 1, characterized in that: The step 1 further includes connecting the end of the first sole component to a first half-tube communicating with the inner cavity thereof, and connecting the end of the second sole component to a second half-tube communicating with the inner cavity thereof; The step 2 further includes heating the cross-sectional end of the first half of the tube to melt the cross-sectional end, and heating the cross-sectional end of the second half of the tube to melt the cross-sectional end; The step 3 further includes assembling the first half tube and the second half tube to form an air nozzle communicating with the inner cavity of the sole body; The shoe sole production method further comprises step 4, inflating the inner cavity of the sole body through an air nozzle to expand the sole body, and then closing the air nozzle by hot pressing.

3. A sole production method according to claim 2, characterized in that: The inflation pressure is 0.01Mpa-0.1Mpa.

4. A sole production method according to claim 2, characterized in that: The air nozzle is closed by high frequency heat pressing.

5. A sole production method according to claim 2, characterized in that: The hot pressing temperature is 180-240 degrees.

6. A sole production method according to claim 1, characterized in that: The step 3 further includes cutting off the excess glue at the joint of the sole body.

7. A sole production method according to claim 1, characterized in that: The shoe sole production method further comprises step 5 of grinding and trimming the surface of the shoe sole body.

8. A sole production method according to claim 1, characterized in that: The first sole component is injection-molded in a first mold by an injection molding machine, and the second sole component is injection-molded in a second mold by an injection molding machine.

9. A sole production method according to claim 1, characterized in that: The first raw material and the second raw material are both TPU materials.

10. A sole production method according to claim 9, characterized in that: The hardness of the first sole component and the second sole component is 85A-90A.

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