Wear-resistant shock-absorbing TPU (thermoplastic polyurethane) sole and forming method

Abstract

The invention discloses a wear-resistant damping TPU sole and a forming method, the wear-resistant damping TPU sole comprises a TPU sole main body, the bottom surface of the TPU sole main body is provided with first antiskid lines, and the middle position of the bottom surface of the TPU sole main body is provided with an arc-shaped groove. The anti-skid performance of the shoe sole can be improved by arranging the first anti-skid grains and the second anti-skid grains on the bottom face of the TPU shoe sole body, the arc-shaped groove is formed in the middle of the bottom face of the TPU shoe sole body, the anti-torsion belt is fixed to the surface of the arc-shaped groove, the anti-torsion performance of the shoe can be improved, and the wear resistance of the shoe can be improved by arranging the wear-resistant block; when a slippery road surface is encountered, the clamping blocks are pulled out, the wear-resisting metal sheets are lowered to the positions making contact with the ground, then the wear-resisting metal sheets are fixed again, the wear resistance and the skid resistance of the shoe can be improved, and a user can be protected; and the damping foam can provide a damping effect for the user, so that the comfort of the shoe is improved.

Description

Technical Field

[0001] The invention relates to the technical field of shoe materials, and in particular to a wear-resistant and shock-absorbing TPU sole and a molding method thereof. Background Art

[0002] Shoes are necessary daily necessities in people's lives. There are many types of shoes, such as sports shoes, high-heeled shoes, casual shoes, etc. The bottom of the shoes is usually fixed with a sole. Since the sole needs to contact the ground, the quality of the sole is particularly important.

[0003] In the prior art, a sole is provided in publication number CN205866130U, which includes: an adhesive layer, a front end block, a middle block, a rear end block bonded to the bottom surface of the adhesive layer, and a plurality of first splicing blocks, second splicing blocks, third splicing blocks, and fourth splicing blocks bonded to the bottom surface of the adhesive layer. The first splicing block and the second splicing block are located between the front end block and the middle block, and the ends of the first splicing block and the second splicing block are arranged in an interlaced manner. The third splicing block and the fourth splicing block are located between the middle block and the rear end block, and the ends of the third splicing block and the fourth splicing block are arranged in an interlaced manner.

[0004] However, this type of sole has poor wear resistance and shock absorption, and its service life is not long. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a wear-resistant and shock-absorbing TPU sole and a molding method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A wear-resistant and shock-absorbing TPU sole comprises a TPU sole body, the bottom surface of the TPU sole body is provided with a first anti-skid pattern, an arc-shaped groove is opened in the middle of the bottom surface of the TPU sole body, an anti-torsion belt is fixed on the surface of the arc-shaped groove, and the bottom surface of the TPU sole body is provided with a second anti-skid pattern on both sides of the arc-shaped groove.

[0008] Preferably, a groove is formed on the bottom surface of the TPU sole body, and wear-resistant blocks are arranged at equal angles inside the groove, and the wear-resistant blocks are fixedly connected to the TPU sole body.

[0009] Preferably, a mounting plate is provided in the middle of the groove, the mounting plate is fixedly connected to the TPU sole body, two mounting plates are symmetrically provided about the axis of the groove, and a wear-resistant metal sheet is installed in the middle of the mounting plate.

[0010] Preferably, a clamping block is installed on one side of the mounting plate, a spring is nested on the outer side of the clamping block, one end of the spring is fixedly connected to the mounting plate and the other end is fixedly connected to the clamping block.

[0011] Preferably, a first card slot is provided on the side of the wear-resistant metal sheet, the first card slot matches the card block, and a second card slot is provided on the side of the wear-resistant metal sheet below the first card slot.

[0012] Preferably, a buffer pad is installed on the upper surface of the TPU sole body, a metal block is fixed to the bottom of the buffer pad, a movable cavity is opened inside the TPU sole body, and a shock-absorbing foam is fixedly connected to the other end of the metal block relative to the buffer pad.

[0013] Preferably, an air cushion is installed inside the TPU sole body.

[0014] A method for forming a wear-resistant and shock-absorbing TPU sole comprises the following steps:

[0015] Step S1, adding TPU raw materials, additives, catalysts, compatibilizers, and foaming agents to a mixer in proportion, adding the mixed materials to a reactor, then adding the compatibilizer, and stirring evenly under a constant temperature condition, then adding the catalyst, continuing the reaction under a constant temperature condition, and stirring for 15-45 minutes to fully mix the reactants to obtain a mixture A;

[0016] Step S2, placing the mixture A on a multi-layer drying plate in an oven, drying at a temperature of 60-90° C., and drying for 45-55 minutes;

[0017] Step S3, granulating the dried mixture A in a pellet extruder to obtain TPU pellets, and then using a roller press to heat and roll the TPU pellets into TPU sheets;

[0018] Step S4, placing the TPU sheet into a vacuum forming machine for vacuum forming to obtain a TPU sole-shaped cavity;

[0019] Step S5, placing the TPU sole-shaped cavity in step S5 into a sole injection molding mold, heating it to 90-120° C., and sequentially stacking several layers of TPU films, and sequentially attaching the several layers of TPU films to the sole injection molding mold;

[0020] Step S6, inject the obtained PU foaming stock solution into the TPU film in the TPU sole-shaped cavity, close the sole injection molding mold, perform hot pressing molding, open the mold, cool, and cut to obtain a wear-resistant and shock-absorbing TPU sole.

[0021] A wear-resistant and shock-absorbing TPU sole is prepared and formed by using the wear-resistant and shock-absorbing TPU sole.

[0022] A wear-resistant and shock-absorbing TPU sole, wherein the TPU sole body is further bonded with a wear-resistant rubber pad and a shock-absorbing TPU pad hot-pressed on the wear-resistant rubber pad;

[0023] The heel portion of the TPU sole body is provided with a mounting groove, and a latex pad is bonded to the mounting groove;

[0024] The surface of the TPU sole body is bonded with a plurality of wear-resistant points;

[0025] Rubber airbag columns are embedded on both sides of the TPU sole body.

[0026] The present invention has the following beneficial effects:

[0027] The bottom surface of the TPU sole main body provided in the present invention is provided with a first anti-skid pattern and a second anti-skid pattern, which can improve the anti-skid performance of the sole; an arc-shaped groove is provided in the middle position of the bottom surface of the TPU sole main body, and an anti-torsion belt is fixed on the surface of the arc-shaped groove, which can increase the torsion resistance of the shoe; by arranging wear-resistant blocks, the wear resistance of the shoe can be improved; when encountering a slippery road surface, the wear-resistant metal sheet can be lowered to a position in contact with the ground by pulling out the clamping block, and then the wear-resistant metal sheet can be re-fixed, so that the wear resistance and anti-skid performance of the shoe can be increased, and the user can be protected; an active cavity is provided inside the TPU sole main body, and shock-absorbing foam is installed in the active cavity. The shock-absorbing foam can provide shock-absorbing effect to the user and improve the comfort of the shoe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the planar structure of the bottom surface of the TPU sole body of the present invention;

[0029] Figure 2 It is a schematic diagram of the planar structure of the side surface of the TPU sole body of the present invention;

[0030] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0031] Figure 4 It is a schematic diagram of the three-dimensional structure of the TPU sole of the present invention.

[0032] In the figure:

[0033] 1. TPU sole body; 2. First anti-skid pattern; 3. Arc groove; 4. Anti-torsion belt; 5. Second anti-skid pattern; 6. Groove; 7. Wear-resistant block; 8. Mounting plate; 9. Wear-resistant metal sheet; 10. Block; 11. Spring; 12. First slot; 13. Second slot; 14. Buffer pad; 15. Metal block; 16. Movable cavity; 17. Shock-absorbing foam; 18. Air cushion; 19. Wear-resistant rubber pad; 20. Shock-absorbing TPU pad; 21. Rubber airbag column; 22. Mounting slot; 23. Latex pad; 24. Wear-resistant point. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] Embodiment 1:

[0037] Reference Figure 1-Figure 3 A wear-resistant and shock-absorbing TPU sole and a forming method thereof include a TPU sole body 1, a first anti-skid pattern 2 is arranged on the bottom surface of the TPU sole body 1, an arc groove 3 is opened in the middle position of the bottom surface of the TPU sole body 1, an anti-torsion belt 4 is fixed on the surface of the arc groove 3, and second anti-skid patterns 5 are arranged on both sides of the bottom surface of the TPU sole body 1. The anti-skid property of the shoe can be improved by arranging the first anti-skid pattern 2 and the second anti-skid pattern 5.

[0038] like Figure 2 As shown, a groove 6 is provided on the bottom surface of the TPU sole body 1, and wear-resistant blocks 7 are arranged at equal angles inside the groove 6. The wear-resistant blocks 7 are fixedly connected to the TPU sole body 1. By arranging multiple wear-resistant blocks 7, the wear resistance of the shoe can be improved.

[0039] like Figure 2 As shown, a mounting plate 8 is provided in the middle position of the groove 6, and the mounting plate 8 is fixedly connected to the TPU sole body 1. Two mounting plates 8 are symmetrically provided about the axis of the groove 6, and a wear-resistant metal sheet 9 is installed in the middle position of the mounting plate 8. A clamping block 10 is installed on one side of the mounting plate 8, and a spring 11 is nested on the outer side of the clamping block 10. One end of the spring 11 is fixedly connected to the mounting plate 8, and the other end is fixedly connected to the clamping block 10. A first clamping groove 12 is provided on the side of the wear-resistant metal sheet 9, and the first clamping groove 12 matches the clamping block 10. A second clamping groove 13 is provided on the side of the wear-resistant metal sheet 9 below the first clamping groove 12. By adjusting the height of the wear-resistant metal sheet 9, the wear resistance and anti-skid properties of the shoes on wet and slippery roads are increased, thereby protecting the user.

[0040] like Figure 2As shown, a cushion pad 14 is installed on the upper surface of the TPU sole body 1, a metal block 15 is fixed to the bottom of the cushion pad 14, an active cavity 16 is opened inside the TPU sole body 1, and a shock-absorbing foam 17 is fixedly connected to the other end of the metal block 15 relative to the cushion pad 14. The cushion pad 14 contacts the user's heel, and the force is transmitted to the shock-absorbing foam 17 through the metal block 15, thereby providing a shock-absorbing effect to the user and improving the comfort of the shoes.

[0041] like Figure 2 As shown, an air cushion 18 is installed inside the TPU sole body 1, which can provide a certain degree of cushioning effect on the sole of the user and improve the shock absorption performance of the shoe.

[0042] In the present invention, the bottom surface of the TPU sole main body 1 is provided with a first anti-skid pattern 2 and a second anti-skid pattern 5, which can improve the anti-skid performance of the sole; an arc groove 3 is provided in the middle position of the bottom surface of the TPU sole main body 1, and an anti-torsion belt 4 is fixed on the surface of the arc groove 3, which can increase the torsion resistance of the shoe; by arranging the wear-resistant block 7, the wear resistance of the shoe can be improved; when encountering a slippery road surface, the wear-resistant metal sheet 9 can be lowered to a position in contact with the ground by pulling out the clamping block 10, and then the wear-resistant metal sheet 9 is re-fixed, so that the wear resistance and anti-skid performance of the shoe can be increased, and the user can be protected; an active cavity 16 is provided inside the TPU sole main body 1, and a shock-absorbing foam 17 is installed in the active cavity 16, a metal block 15 is fixed above the shock-absorbing foam 17, and a buffer pad 14 is fixed on the top of the metal block 15, and the user's heel contacts the buffer pad 14, and the shock-absorbing foam 17 can provide a shock-absorbing effect to the user, thereby improving the comfort of the shoe.

[0043] Embodiment 2:

[0044] On the basis of Example 1, further disclosed:

[0045] A method for forming a wear-resistant and shock-absorbing TPU sole comprises the following steps:

[0046] Step S1, adding TPU raw materials, additives, catalysts, compatibilizers, and foaming agents to a mixer in proportion, adding the mixed materials to a reactor, then adding the compatibilizer, and stirring evenly under a constant temperature condition, then adding the catalyst, continuing the reaction under a constant temperature condition, and stirring for 15-45 minutes to fully mix the reactants to obtain a mixture A;

[0047] Step S2, placing the mixture A on a multi-layer drying plate in an oven, drying at a temperature of 60-90° C., and drying for 45-55 minutes;

[0048] Step S3, granulating the dried mixture A in a pellet extruder to obtain TPU pellets, and then using a roller press to heat and roll the TPU pellets into TPU sheets;

[0049] Step S4, placing the TPU sheet into a vacuum forming machine for vacuum forming to obtain a TPU sole-shaped cavity;

[0050] Step S5, placing the TPU sole-shaped cavity in step S5 into a sole injection molding mold, heating it to 90-120° C., and sequentially stacking several layers of TPU films, and sequentially attaching the several layers of TPU films to the sole injection molding mold;

[0051] Step S6, inject the obtained PU foaming stock solution into the TPU film in the TPU sole-shaped cavity, close the sole injection molding mold, perform hot pressing molding, open the mold, cool, and cut to obtain a wear-resistant and shock-absorbing TPU sole.

[0052] Embodiment 3:

[0053] Based on Example 1, further disclosed:

[0054] like Figure 4 As shown, a wear-resistant and shock-absorbing TPU sole is prepared and formed using the above-mentioned wear-resistant and shock-absorbing TPU sole.

[0055] like Figure 4 As shown, a wear-resistant and shock-absorbing TPU sole is provided. The TPU sole body 1 is also bonded with a wear-resistant rubber pad 19 and a shock-absorbing TPU pad 20 hot-pressed on the wear-resistant rubber pad 19 .

[0056] In the above technology, further:

[0057] The wear-resistant rubber pad 19 is used to increase the friction with the ground, and the shock-absorbing TPU pad 20 is used to provide support for the foot, thereby enhancing the comfort of the foot.

[0058] A mounting groove 22 is formed at the heel of the TPU sole body 1 , and a latex pad 23 is bonded to the mounting groove 22 .

[0059] In the above technology, further:

[0060] A latex pad 23 is used to increase the comfort of the heel.

[0061] A plurality of wear-resistant points 24 are bonded to the surface of the TPU sole body 1 , and the plurality of wear-resistant points 24 are used to increase the frictional force exerted on the sole of the foot.

[0062] Rubber airbag columns 21 are embedded on both sides of the TPU sole body 1. The rubber airbag columns 21 are used to increase the force strength of the TPU sole body 1 and provide buffer support.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wear-resistant and shock-absorbing TPU sole, characterized in that: The invention comprises a TPU sole body (1), the bottom surface of the TPU sole body (1) is provided with a first anti-skid pattern (2), an arc-shaped groove (3) is provided in the middle of the bottom surface of the TPU sole body (1), an anti-torsion belt (4) is fixed on the surface of the arc-shaped groove (3), and the bottom surface of the TPU sole body (1) is provided with a second anti-skid pattern (5) on both sides of the arc-shaped groove (3).

2. The wear-resistant and shock-absorbing TPU sole according to claim 1, characterized in that: The bottom surface of the TPU sole body (1) is provided with a groove (6), and wear-resistant blocks (7) are arranged at equal angles inside the groove (6), and the wear-resistant blocks (7) are fixedly connected to the TPU sole body (1).

3. The wear-resistant and shock-absorbing TPU sole according to claim 2, characterized in that: A mounting plate (8) is arranged in the middle of the groove (6); the mounting plate (8) is fixedly connected to the TPU sole body (1); two mounting plates (8) are symmetrically arranged about the axis of the groove (6); and a wear-resistant metal sheet (9) is installed in the middle of the mounting plate (8).

4. The wear-resistant and shock-absorbing TPU sole according to claim 3, characterized in that: A clamping block (10) is installed on one side of the mounting plate (8), a spring (11) is nested on the outer side of the clamping block (10), one end of the spring (11) is fixedly connected to the mounting plate (8) and the other end is fixedly connected to the clamping block (10).

5. The wear-resistant and shock-absorbing TPU sole according to claim 4, characterized in that: A first card slot (12) is provided on the side of the wear-resistant metal sheet (9), the first card slot (12) matches the card block (10), and a second card slot (13) is provided on the side of the wear-resistant metal sheet (9) below the first card slot (12).

6. The wear-resistant and shock-absorbing TPU sole according to claim 1, characterized in that: A cushion pad (14) is installed on the upper surface of the TPU sole body (1), a metal block (15) is fixed to the bottom of the cushion pad (14), an active cavity (16) is provided inside the TPU sole body (1), and a shock-absorbing foam (17) is fixedly connected to the other end of the metal block (15) relative to the cushion pad (14).

7. The wear-resistant and shock-absorbing TPU sole according to claim 1, characterized in that: An air cushion (18) is installed inside the TPU sole body (1).

8. A method for forming a wear-resistant and shock-absorbing TPU sole, characterized in that: The following steps are involved: Step S1, adding TPU raw materials, additives, catalysts, compatibilizers, and foaming agents to a mixer in proportion, adding the mixed materials to a reactor, then adding the compatibilizer, and stirring evenly under a constant temperature condition, then adding the catalyst, continuing the reaction under a constant temperature condition, and stirring for 15-45 minutes to fully mix the reactants to obtain a mixture A; Step S2, placing the mixture A on a multi-layer drying plate in an oven, drying at a temperature of 60-90° C., and drying for 45-55 minutes; Step S3, granulating the dried mixture A in a pellet extruder to obtain TPU pellets, and then using a roller press to heat and roll the TPU pellets into TPU sheets; Step S4, placing the TPU sheet into a vacuum forming machine for vacuum forming to obtain a TPU sole-shaped cavity; Step S5, placing the TPU sole-shaped cavity in step S5 into a sole injection molding mold, heating it to 90-120° C., and sequentially stacking several layers of TPU films, and sequentially attaching the several layers of TPU films to the sole injection molding mold; Step S6, inject the obtained PU foaming stock solution into the TPU film in the TPU sole-shaped cavity, close the sole injection molding mold, perform hot pressing molding, open the mold, cool, and cut to obtain a wear-resistant and shock-absorbing TPU sole.

9. A wear-resistant and shock-absorbing TPU sole according to any one of claims 1 to 7, characterized in that: The wear-resistant and shock-absorbing TPU sole is prepared and molded using the wear-resistant and shock-absorbing TPU sole as described in claim 8.

10. The wear-resistant and shock-absorbing TPU sole according to claim 8, characterized in that: The TPU sole body (1) is also bonded with a wear-resistant rubber pad (19) and a shock-absorbing TPU pad (20) hot-pressed on the wear-resistant rubber pad (19); The heel portion of the TPU sole body (1) is provided with a mounting groove (22), and a latex pad (23) is bonded to the mounting groove (22); The surface of the TPU sole body (1) is bonded with a plurality of wear-resistant points (24); Rubber airbag columns (21) are embedded on both sides of the TPU sole body (1).

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