A production process for skateboard shoes

Abstract

The present invention relates to the field of shoe production and processing, and provides a production process for skateboard shoes. The molding device includes a mold body, a driving device for driving the mold body to open and close the mold, the mold body includes a first mold and a second mold, a mold cavity is provided in the mold body, and the sole is molded in the mold cavity. The first mold is provided with a first support portion, and the inner wall of the mold body is provided with at least two protrusions, and the mold body is provided with a material discharge port; the steps include placing a support plate, one-time mold closing and material discharge, two-time mold closing, and cooling and molding. The sole produced by the present invention is formed in one time, has higher strength, and greatly improves production efficiency. The two-time mold closing method is used to give the material enough expansion space, so that all materials can be foamed evenly, which improves the foaming effect and the strength of the sole, and solves the technical problems that it is difficult to set a support plate in the one-piece molded sole, the sole foaming effect is poor, and the produced sole has poor support and cushioning effects.

Description

Technical Field

[0001] The invention relates to the field of shoe production and processing, and in particular to a production process of skateboard shoes. Background Art

[0002] Existing skateboard shoe sole production devices usually adopt the traditional two-mold molding method. It is difficult to set a support plate in the one-piece molded sole, and the support plate can only be compounded between the two layers of the sole. The sole of this structure has weak stability, and the two layers of the sole are easily cracked by the force of the support plate. The sole support and cushioning effect of the produced skateboard shoes are poor; after the two molds are molded together, the material is heated at high temperature, and the material foams and expands in the mold cavity. During the expansion process, some materials may be squeezed in the middle and not fully heated, and cannot be fully foamed. Another part of the material may be limited by space and it is difficult to achieve complete foaming. The foaming of each particle of the produced sole is uneven, and the sole foaming effect is poor.

[0003] Chinese patent application number: 201820849077.X, discloses a sole thermoforming mold that is convenient for removing sole edge materials, including an upper mold and a lower mold, the lower mold has a finished product area, and the sole product is formed by pressing the finished product convex part of the upper mold with the finished product area of ​​the lower mold; the outer side of the finished product area of ​​the lower mold is a horizontal mold opening without side walls, and a straight wall with a width of 0.8 mm is made at the mold opening where there is a side wall at the edge of the finished product area of ​​the lower mold, and a small groove is made on the periphery to enhance the thickness of the edge material; a flat wall with a width of 0.8 mm is made at the mold opening without side walls, and a small groove is made on the periphery to increase the thickness of the edge material. The mold of the sole cannot set a support plate in the one-piece sole, and the support plate can only be compounded between the two layers of the sole. The sole of this structure has weak stability, and the two layers of the sole are easily cracked by the force of the support plate. The sole support and cushioning effect of the produced skateboard shoes are poor; during the foaming process, some materials may be squeezed in the middle and not fully heated, and cannot be fully foamed. Another part of the material may be limited by space and it is difficult to achieve complete foaming. The foaming of each particle of the produced sole is uneven, and the foaming effect of the sole is poor. Summary of the invention

[0004] Therefore, in view of the above problems, the present invention proposes a production process for skateboard shoes, which solves the technical problems that it is difficult to set a support plate in the one-piece molded sole, the foaming effect of the sole is poor, and the support and cushioning effects of the produced sole are poor.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A production process for skateboard shoes, comprising the following steps:

[0007] The sole is produced by a molding device, which includes a mold body and a driving device for driving the mold body to open and close the mold. The mold body includes a first mold and a second mold. A mold cavity is provided in the mold body, and the sole is molded in the mold cavity. The first mold is provided with a first support portion, and the inner side wall of the mold body is provided with at least two protrusions. The mold body is provided with a feed opening.

[0008] S1. Place the support plate:

[0009] The support plate is placed on the first support portion of the first mold, with two sides of the support plate resting against the protrusions, and the first support portion and the protrusions support and clamp the support plate;

[0010] S2. One-step mold closing and unloading:

[0011] The driving device drives the first mold and the second mold to move in the mold closing direction. The first mold and the second mold are not completely closed. There is a gap between the first mold and the second mold that can be connected to the outside. The feeding device feeds the raw material into the mold cavity through the feeding port. The steam device applies steam into the mold cavity through the steam port. The steam heats the raw material, and the raw material foams and expands in volume due to the heat.

[0012] S3. Secondary mold closing:

[0013] The driving device drives the first mold and the second mold to slowly move in the mold closing direction, pressurizing the foaming material so that the foaming materials gather together and increase the density;

[0014] S4. Cooling molding:

[0015] The first mold and the second mold are cooled by cooling water. After cooling, the driving device drives the first mold and the second mold to open the mold to take out the molded sole;

[0016] The formed sole has first buffer grooves on both sides.

[0017] Further:

[0018] Step S2, the distance that the first mold and the second mold need to move to achieve full closure is 7 mm to 10 mm, the volume of the raw material expands to fill the mold cavity, and a large amount of gas in the mold cavity is discharged from the gap.

[0019] The first support portion includes at least two first support columns, the support plate is located between the first support columns, the second mold is provided with a second support portion, the second support portion includes at least two second support columns, the second support columns include a fixed column fixed to the second mold, a buffer column slidable on the fixed column, and a buffer spring connected to the fixed column and the buffer column; step S2, the first support column and the second support column clamp the fixed support plate; step S3, when the first mold and the second mold slowly move in the mold closing direction, the first support column forms a first buffer hole at the bottom of the sole, and the second support column forms a second buffer hole at the top of the sole.

[0020] The support portion further comprises at least one support block, and the support block forms a second buffer groove on the sole.

[0021] The mold body is provided with a feed port, and the mold body is provided with an exhaust hole, which is connected to the mold cavity and the outside. In step S3, the gas in the mold cavity is discharged through the exhaust hole.

[0022] The first mold and the second mold are provided with matching slots and inserts on their sides, the inserts and slots are located at the front and rear of the shoe mold, and in step S2, the inserts extend into the slots, and the gap connected to the outside is located in the middle of the sole mold.

[0023] The support plate is a carbon plate.

[0024] The length of the protrusion is not less than 2 cm, so that the length of the formed first buffer groove is not less than 2 cm.

[0025] The driving device is a cylinder.

[0026] The number of the protrusions is two, and the two protrusions are respectively located on two sides of the mold body.

[0027] By adopting the above technical solution, the beneficial effects of the present invention are:

[0028] The present invention arranges the first support part in the mold body and fixes the support plate in the mold cavity, so that the middle part of the one-piece molded sole has the support plate. Compared with the traditional composite sole structure, only one molding is required, which greatly improves the production efficiency and has higher strength. The midsole is not easy to be damaged. The support plate can have a good supporting effect on the entire sole, and the sole is not easily damaged by a large force. At the same time, when the support plate is subjected to force to play a supporting role, the first buffer groove can also be deformed, which can play a shock-absorbing role on both sides of the support plate. While increasing the supporting force of the entire sole, the shock-absorbing effect of the entire sole will not be reduced. The support plate can be seen from the outside through the first buffer groove, so that consumers can see the internal structure, which improves the appearance of the sole. The method of twice closing the mold can give the material enough expansion space during the first closing of the mold, so that all the materials can be foamed evenly or even completely foamed. The expanded material is relatively sparse, and the second closing of the mold can be completed. After the second mold closing, the material is slowly extruded, so that the foamed material gathers together and the density becomes larger, thereby improving the foaming effect, improving the strength of the sole, and preventing the particles of the produced sole from foaming unevenly. During the first mold closing and the initial stage of the second mold closing, when the gap is not completely closed, the gap between the first mold and the second mold can discharge the gas, thereby increasing the speed of gas discharge and improving the extrusion effect of the material; further, the first support part, the second support part and the protrusion fix the support plate, so that the support plate will not move during the operation of the equipment. When the first mold and the second mold are not completely closed, the buffer column can be fixed on the support plate to improve the fixing effect and prevent the support plate from moving; further, the second buffer groove can be deformed to play a shock-absorbing role on the bottom of the support plate; further, the slot and the insert have the function of positioning and blocking, thereby improving the stability of the mold closing of the first mold and the second mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the first mold.

[0030] Figure 2 It is a schematic diagram of the structure of the second mold.

[0031] Figure 3 It is a simplified cross-sectional view of the second support column.

[0032] Figure 4 It is a schematic diagram of the structure of the sole.

[0033] Figure 5 It is a simplified cross-sectional view of the sole.

[0034] Figure 6 It is a structural schematic diagram of the support block.

[0035] Reference numerals:

[0036] 1. First mold; 11. Support block; 111. First block; 112. Second block; 113. First inclined surface; 114. Second inclined surface; 12. First support column; 13. Protrusion; 14. Slot; 2. Second mold; 21. Second support column; 211. Fixed column; 212. Buffer column; 213. Buffer spring; 22. Insert; 3. Support plate; 4. Feeding port; 5. Exhaust hole; 6. Sole; 61. First buffer slot; 62. Second buffer slot; 621. First buffer zone; 622. Second buffer zone; 7. Steam port. DETAILED DESCRIPTION

[0037] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0038] refer to Figures 1 to 6 This embodiment provides a production process of skateboard shoes, including the following steps:

[0039] The sole 6 is produced by a molding device, which includes a mold body and a driving device for driving the mold body to open and close the mold. The mold body includes a first mold 1 and a second mold 2. A mold cavity is provided in the mold body, and the sole 6 is molded in the mold cavity. A first supporting portion is provided on the first mold 1, and two protrusions 13 are provided on the inner side wall of the mold body. A discharge port 4 is provided on the mold body.

[0040] S1. Place support plate 3:

[0041] The support plate 3 is placed on the first support portion of the first mold 1 , with both sides of the support plate 3 resting against the protrusions 13 , and the first support portion and the protrusions 13 support and clamp the support plate 3 .

[0042] S2. One-step mold closing and unloading:

[0043] The driving device drives the first mold 1 and the second mold 2 to move in the direction of mold closing. The first mold 1 and the second mold 2 are not completely closed. There is a gap between the first mold 1 and the second mold 2 that can be connected to the outside. The feeding device feeds the raw material into the mold cavity through the feeding port 4. The steam device applies steam to the mold cavity through the steam port 7. The steam heats the raw material, and the raw material foams and expands in volume due to the heat.

[0044] S3. Secondary mold closing:

[0045] The driving device drives the first mold 1 and the second mold 2 to slowly move in the mold closing direction, pressurizing the foaming material so that the foaming materials gather together and increase their density.

[0046] S4. Cooling molding:

[0047] The first mold 1 and the second mold 2 are cooled by cooling water. After cooling, the driving device drives the first mold 1 and the second mold 2 to open the molds to take out the molded sole 6.

[0048] The sole 6 is formed with first buffer grooves 61 on both sides.

[0049] In one embodiment, in step S2, the distance that the first mold 1 and the second mold 2 need to move to achieve full closure is 7 mm to 10 mm, the volume of the raw material expands to fill the mold cavity, and a large amount of gas in the mold cavity is discharged from the gap.

[0050] In one embodiment, the first support portion includes a plurality of first support columns 12, the support plate 3 is located between the first support columns 12, the second mold 2 is provided with a second support portion, the second support portion includes a plurality of second support columns 21, the second support column 21 includes a fixed column 211 fixed to the second mold 2, a buffer column 212 slidable on the fixed column 211, and a buffer spring 213 connected to the fixed column 211 and the buffer column 212; step S2, the first support column 12 and the second support column 21 clamp the fixed support plate 3; step S3, when the first mold 1 and the second mold 2 slowly move in the mold closing direction, the first support column 12 forms a first buffer hole at the bottom of the sole 6, and the second support column 21 forms a second buffer hole at the top of the sole 6.

[0051] In one embodiment, the support portion further includes a support block 11 , and the support block 11 forms a second buffer groove 62 on the sole 6 .

[0052] In one embodiment, a feed port 4 is provided on the mold body, and an exhaust hole 5 is provided in the mold body. The exhaust hole 5 is connected to the mold cavity and the outside. In step S3, the gas in the mold cavity is discharged through the exhaust hole 5.

[0053] In one embodiment, the side edges of the first mold 1 and the second mold 2 are provided with mutually matching slots 14 and insertion strips 22, and the insertion strips 22 and the slots 14 are located at the front and rear of the shoe mold. In step S2, the insertion strips 22 extend into the slots 14, and the gap connected to the outside world is located in the middle of the sole 6 mold.

[0054] In one embodiment, the length of the protrusion 13 is not less than 2 cm, so that the length of the formed first buffer groove 61 is not less than 2 cm.

[0055] In one embodiment, the number of the protrusions 13 is two, and the two protrusions 13 are respectively located on both sides of the mold body. The number of the protrusions 13 can also be one, three or even more; the two protrusions 13 can also be only set on one side of the mold body, depending on the specific situation.

[0056] The support plate 3 is a carbon plate, and may also be an aluminum plate, a composite plate or other plate material capable of supporting the sole 6 , which is a well-known material and is specifically configured according to the circumstances.

[0057] Figure 4 The bottom of the sole 6 is compounded with an outsole.

[0058] The above-mentioned driving device is an oil cylinder, and may also be an air cylinder or other devices, which are not shown in the figure and are well-known devices, and will not be described in detail here.

[0059] The above-mentioned steam device is not shown in the figure and is a well-known device, so it will not be described in detail here.

[0060] In one embodiment, the surface area of ​​the horizontal section of the support block 11 gradually increases from top to bottom, and the surface area of ​​the horizontal section of the formed second buffer groove 62 gradually increases from top to bottom, which is not only conducive to the demoulding of the sole 6, but also can improve the strength and buffering effect of the second buffer groove 62.

[0061] More specifically, the support block 11 includes a first block 111 disposed in the first mold 1, a second block 112 disposed on the top of the first block 111, the first block 111 has a first inclined surface 113 on its circumference, and the second block 112 has a second inclined surface 114. This structure enables the second groove to have a first buffer zone 621 and a second buffer zone 622 corresponding to the first block 111 and the second block 112, and the buffering effect is better.

[0062] More specifically, the inclination angle of the first inclined surface 113 is greater than the inclination angle of the second inclined surface 114. In this structure, the top buffer zone has a good supporting effect, and the bottom buffer zone has a better buffering compression effect. The double buffering, the ground is transitioned to the carbon plate through the first buffer zone 621 and the second buffer zone 622, which can better protect the sole 6 and improve the buffering effect.

[0063] In one embodiment, the opening and closing directions of the first mold 1 and the second mold 2 are horizontal directions of left and right movement, the steam port 7 is located at the bottom, and the discharge port 4 is located at the top. When the material falls from the steam port 7, the steam moving upward heats the material, and the material can be preheated and foamed and expanded during the falling process, so that each material can be preheated and expanded to a certain volume when it falls to the bottom, preventing a small amount of material from being sandwiched between other materials and unable to foam completely.

[0064] More specifically, the position of the steam port 7 is lower than the position of the protrusion 13 , and the position of the feed port 4 is higher than the position of the protrusion 13 .

[0065] More specifically, with the heels pointing downward and the toes pointing upward, the material falls a large distance, thereby improving the preheating effect.

[0066] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A production process for skateboard shoes, characterized in that: The following steps are involved: The sole is produced by a molding device, which includes a mold body and a driving device for driving the mold body to open and close the mold. The mold body includes a first mold and a second mold. A mold cavity is provided in the mold body, and the sole is molded in the mold cavity. The first mold is provided with a first support portion, and the inner side wall of the mold body is provided with at least two protrusions. The mold body is provided with a feed opening. S1. Place the support plate: The support plate is placed on the first support portion of the first mold, with two sides of the support plate resting against the protrusions, and the first support portion and the protrusions support and clamp the support plate; S2. One-step mold closing and unloading: The driving device drives the first mold and the second mold to move in the mold closing direction. The first mold and the second mold are not completely closed. There is a gap between the first mold and the second mold that can be connected to the outside. The feeding device feeds the raw material into the mold cavity through the feeding port. The steam device applies steam into the mold cavity through the steam port. The steam heats the raw material, and the raw material foams and expands in volume due to the heat. S3. Secondary mold closing: The driving device drives the first mold and the second mold to slowly move in the mold closing direction, pressurizing the foaming material so that the foaming materials gather together and increase the density; S4. Cooling molding: The first mold and the second mold are cooled by cooling water. After cooling, the driving device drives the first mold and the second mold to open the mold to take out the molded sole; The formed sole has first buffer grooves on both sides.

2. The production process of skateboard shoes according to claim 1, characterized in that: Step S2, the distance that the first mold and the second mold need to move to achieve full closure is 7 mm to 10 mm, the volume of the raw material expands to fill the mold cavity, and a large amount of gas in the mold cavity is discharged from the gap.

3. The production process of skateboard shoes according to claim 1, characterized in that: The first support portion includes at least two first support columns, the support plate is located between the first support columns, the second mold is provided with a second support portion, the second support portion includes at least two second support columns, the second support columns include a fixed column fixed to the second mold, a buffer column slidable on the fixed column, and a buffer spring connected to the fixed column and the buffer column; step S2, the first support column and the second support column clamp the fixed support plate; step S3, when the first mold and the second mold slowly move in the mold closing direction, the first support column forms a first buffer hole at the bottom of the sole, and the second support column forms a second buffer hole at the top of the sole.

4. The production process of skateboard shoes according to claim 3, characterized in that: The support portion further comprises at least one support block, and the support block forms a second buffer groove on the sole.

5. The production process of skateboard shoes according to claim 1, characterized in that: The mold body is provided with a feed port, and the mold body is provided with an exhaust hole, which is connected to the mold cavity and the outside. In step S3, the gas in the mold cavity is discharged through the exhaust hole.

6. The production process of skateboard shoes according to claim 1, characterized in that: The first mold and the second mold are provided with matching slots and inserts on their sides, the inserts and slots are located at the front and rear of the shoe mold, and in step S2, the inserts extend into the slots, and the gap connected to the outside is located in the middle of the sole mold.

7. The production process of skateboard shoes according to claim 1, characterized in that: The support plate is a carbon plate.

8. The production process of skateboard shoes according to claim 1, characterized in that: The length of the protrusion is not less than 2 cm, so that the length of the formed first buffer groove is not less than 2 cm.

9. The production process of skateboard shoes according to claim 1, characterized in that: The driving device is a cylinder.

10. The production process of skateboard shoes according to claim 1, characterized in that: The number of the protrusions is two, and the two protrusions are respectively located on two sides of the mold body.

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