A kind of sole production and processing technology

Abstract

The invention relates to the field of shoe production and processing, and provides a sole production and processing process, including mold closing, first material cutting, primary heating, second material cutting, secondary heating, and sole molding. Two materials can be molded on the same mold without manual labor or two molds, which greatly improves production efficiency. The connection between the first material and the second material can be fused together to achieve vulcanization fixation, rather than being connected together with clear boundaries, so cracking is not likely to occur. During the second heating, the temperature around the through hole is greater than that at other positions to compensate for the time when the second material has not been heated once, so that the molding time of the first material and the second material can be synchronized, and excessive heating or incomplete heating is prevented, thereby improving heating efficiency and the quality of the sole, and solving the technical problems of high processing cost, low production efficiency and poor sole quality caused by using two materials for the sole.

Description

Technical Field

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

[0002] As people's lives improve, the quality and aesthetic requirements of shoes are getting higher and higher. In order to produce a variety of structures and functions, the structure of existing soles is becoming more and more complex and diverse. The more complex the structure of the sole, the better the function, but its production process is more complicated, usually semi-automatic or manual production is required, and the production cost is high. For the structure of setting two materials on the sole, secondary molding is usually required. After the first material is molded into the sole in one of the molds, the sole is manually taken out and the sole is placed in the second mold. The second material is added to the second mold for secondary molding. For some soles that need to be cooled, secondary cooling is required. This method not only increases labor costs, but also has low production efficiency. The sole is molded twice. The first material is heated twice, and it is possible to be overheated, resulting in the sole being hard or even cracked locally. When the second material is put in, the first material has been completely heated and formed, and it is difficult to be vulcanized and fixed with the second material in the second molding. The fixing effect of the two materials is poor. If the wear time is long or a large force is applied, the connection between the first material and the second material is prone to cracking. Summary of the invention

[0003] Therefore, in view of the above problems, the present invention proposes a sole production and processing technology, which solves the technical problems that the sole adopts two materials, the processing cost is high, the production efficiency is low, and the sole quality is poor.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A sole production process, comprising the following steps:

[0006] S1.Mold closing:

[0007] The first driving mechanism drives the upper mold and the lower mold to close the mold, so that a mold cavity in the shape of a shoe sole is formed between the upper mold and the lower mold;

[0008] The lower mold is provided with at least one lifting seat, which is driven by a second driving mechanism and can be moved into the mold cavity, and the lifting seat is connected to a second heating device; the upper mold is provided with a first feeding port and at least one second feeding port, the first feeding port is connected to a first feeding device, and the first feeding device has a first material, and the second feeding port is connected to a second feeding device, and the second feeding device has a second material;

[0009] S2. First material unloading:

[0010] The second driving mechanism drives the lifting seat to rise, the lifting seat moves to the top of the mold cavity and blocks the second material discharge port, and the first material discharge device discharges the first material into the mold cavity;

[0011] S3. One-time heating:

[0012] The first heating device heats the first material in the mold cavity, and the second heating device heats the lifting seat. The first material is heated in the mold cavity, and the first material foams and expands in the mold cavity. The first heating device sets a first heating temperature of T1, T1 is 100 degrees Celsius to 130 degrees Celsius, and the second heating device sets a first heating temperature of T2, T2 is 140 degrees Celsius to 170 degrees Celsius. When the temperature of the second heating device reaches T2, the temperature of T2 is maintained, and a through hole is formed at the position of the lifting seat in the sole. The temperature of the through hole is higher than the temperature of other positions of the sole. The first material at the through hole foams, expands, and adheres together to form a certain hardness, but does not reach the hardness of complete heating and molding.

[0013] S4. Unloading of the second material:

[0014] The second driving mechanism drives the lifting seat to descend, the lifting seat is separated from the through hole, and the second unloading device unloads the second material into the through hole;

[0015] S5. Secondary heating:

[0016] The first heating device and the second heating device continue to heat up, the second heating temperature set by the first heating device is T3, the T3 temperature is 190 degrees Celsius to 220 degrees Celsius, the second heating temperature set by the second heating device is T4, the T4 temperature is 190 degrees Celsius to 220 degrees Celsius, when the first heating device and the second heating temperature reach the temperature T3 and T4 respectively, the first material and the second material are continuously heated and foamed in the mold cavity and bonded together;

[0017] S6.Sole molding:

[0018] The first material forms a first part on the sole, and the second material forms a second part in the through hole of the sole. The sole is formed, and the first driving mechanism drives the upper mold and the lower mold to open the mold to take out the sole.

[0019] Further:

[0020] Step S3, at temperature T1, a large amount of the first material is gradually transformed into a solid state, and at temperature T2, the first material around the through-holes of the sole reaches a relatively soft solid structure, and the lifting seat can be demoulded smoothly without deforming the sole at the through-holes.

[0021] In step S5, the time taken by the second heating device to heat to temperature T4 is less than the time taken by the first heating device to heat to temperature T3. During the temperature rising stage, the temperature at the through hole is greater than the temperature at other positions, which can increase the heating speed of the second material, thereby shortening the heating time of the second material to compensate for the time during which the second material has not been heated once.

[0022] The hardness of the second part is greater than that of the first part, and the second part plays a good supporting role.

[0023] The hardness of the second part is lower than that of the first part, and the second part plays a good buffering role.

[0024] There are at least two second parts, and at least one second part is provided on the heel of the shoe sole and the sole of the shoe.

[0025] The lifting seat is provided with an installation opening, and the installation opening is connected with a first thermocouple, and the first thermocouple can monitor the temperature of the lifting seat in real time.

[0026] The upper mold and the lower mold are provided with wire grooves, and the first heating device includes a heating wire arranged in the wire grooves.

[0027] The rear end of the heating wire is connected to a second thermocouple, and the second thermocouple is located in the wire groove.

[0028] The outer wall of the wire groove is filled with a sealing layer, and the sealing layer seals the heating wire in the wire groove.

[0029] By adopting the above technical solution, the beneficial effects of the present invention are:

[0030] The two materials of the present invention can be formed on the same mold without manual labor or the use of two molds, which reduces the complexity of operation, greatly improves production efficiency, and saves labor costs; during the two heating processes in the mold, the first material is heated twice and the second material is heated once. When the second material is added, the first material has not reached a fully formed state. During the second heating, the first material and the second material are heated at the same time, so that the connection between the first material and the second material can be fused together. This fixing method allows the first material and the second material to be connected in an integral manner rather than being connected together with clear boundaries. Even if they are worn for a long time or subjected to a large force, they are not prone to cracking; the temperature set for the first heating is T1 and T2, so that the temperature at the through hole is higher than the temperature at other positions. When the lifting seat is detached, the first material will not adhere to the lifting seat, and the first material is not prone to deformation; during the second heating, the through hole The temperature on the side around the hole is greater than that at other positions, and the heating time of the second material is less than that of the first material to compensate for the time when the second material has not been heated once, so that the molding time of the first material and the second material can be synchronized, preventing overheating or incomplete heating, improving the heating efficiency, and thus improving the quality of the sole; further, when the hardness of the second part is greater than that of the first part, the first part can be made into a softer structure, and the second part plays a supporting role, making the entire sole softer and more comfortable; further, when the hardness of the second part is less than that of the first part, the sole as a whole is harder and can better protect the foot, and the second part has a buffering effect, which can have a buffering effect on the local part of the foot and improve the comfort of the sole; further, the first heating device is a heating wire, which can not only greatly improve the heating efficiency and temperature control effect, improve the quality of the sole, but also reduce heat loss and save energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the sole production device of the present invention.

[0032] Figure 2 It is a simplified structural diagram of the upper and lower molds in the open mold state.

[0033] Figure 3 It is a simplified structural diagram of the upper and lower molds in the mold closing state.

[0034] Figure 4 yes Figure 3 Schematic diagram of the structure after the first material is cut.

[0035] Figure 5 yes Figure 4 Schematic diagram of the structure after the lifting seat is lowered.

[0036] Figure 6This is a simplified diagram of the structure after the second material is cut.

[0037] Figure 7 It is a simplified structural diagram of the second driving mechanism and the lifting seat.

[0038] Figure 8 It is a simplified structural diagram of the upper mold and the lower mold with wire grooves and heating wires.

[0039] Fig. 9 yes Figure 8 Cross-sectional view of the wire duct and heating wire.

[0040] Fig.10 yes Figure 8 Cross-sectional view of the wire duct and second thermocouple.

[0041] Fig.11 It is a schematic diagram of the structure of the sole.

[0042] Fig.12 It is a schematic diagram of another structure of the upper mold and the lower mold.

[0043] Fig.13 It is a schematic diagram of the structure in which the second part of the sole is in an inverted V shape.

[0044] Fig.14 yes Fig.13 Partial cross-section of the sole.

[0045] Fig.15 It is a structural schematic diagram of a production device equipped with a third unloading device.

[0046] Fig.16 It is a structural schematic diagram of a sole having a third part.

[0047] Fig.17 yes Fig.16 Partial cross-section of the sole.

[0048] Reference numerals:

[0049] 1. First driving mechanism; 2. Upper mold; 21. First feeding port; 22. Second feeding port; 3. Lower mold; 31. Lifting seat; 310. Mounting port; 32. Second driving mechanism; 320. Bottom plate; 33. Second heating device; 34. First thermocouple; 4. Mold cavity; 41. Wire groove; 42. First heating device; 43. Second thermocouple; 44. Sealing layer; 51. First feeding device; 52. Second feeding device; 53. Third feeding device; 6. Sole; 60. Through hole; 61. First part; 62. Second part; 63. Third part; 630. Anti-slip part. DETAILED DESCRIPTION

[0050] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0051] refer to Figures 1 to 11 This embodiment provides a sole production process, comprising the following steps:

[0052] S1.Mold closing:

[0053] The first driving mechanism 1 drives the upper mold 2 and the lower mold 3 to close the mold, and a mold cavity 4 in the shape of a sole 6 is formed between the upper mold 2 and the lower mold 3.

[0054] The lower mold 3 is provided with a lifting seat 31, which is driven by a second driving mechanism 32. The lifting seat 31 can be moved into the mold cavity 4, and the lifting seat 31 can also be moved to be separated from the mold cavity 4; the lifting seat 31 is connected to the second heating device 33; the upper mold 2 is provided with a first discharge port 21 and a second discharge port 22, the first discharge port 21 is connected to the first discharge device 51, and the first discharge device 51 has a first material, and the second discharge port 22 is connected to the second discharge device 52, and the second discharge device 52 has a second material.

[0055] S2. First material unloading:

[0056] The second driving mechanism 32 drives the lifting seat 31 to rise, and the lifting seat 31 moves to the top of the mold cavity 4 and blocks the second material discharge port 22 . The first material discharge device 51 discharges the first material into the mold cavity 4 .

[0057] S3. One-time heating:

[0058] The first heating device 42 heats the first material in the mold cavity 4, and the second heating device 33 heats the lifting seat 31. The first material is heated in the mold cavity 4. The first heating temperature set by the first heating device 42 is T1, and T1 is 100 degrees Celsius to 130 degrees Celsius. At the temperature T1, a large amount of the first material is gradually converted into a solid state.

[0059] The first heating temperature set for the second heating device 33 is T2, and the temperature of T2 is 140 degrees Celsius to 170 degrees Celsius, T2>T1. When the temperature of the second heating device 33 reaches T2, the temperature of T2 is maintained, and a through hole 60 is formed on the sole 6 at the position of the lifting seat 31. The temperature of the through hole 60 is higher than the temperature of other positions of the sole 6. The first material located at the through hole 60 forms a certain hardness, but does not reach the hardness of being completely heated and formed.

[0060] S4. Unloading of the second material:

[0061] The second driving mechanism 32 drives the lifting seat 31 to descend. At the temperature T2, the first material around the through hole 60 of the sole 6 reaches a relatively soft solid structure. The lifting seat 31 can be demolded smoothly without deforming the sole 6 at the through hole 60. The second unloading device 52 unloads the second material into the through hole 60.

[0062] S5. Secondary heating:

[0063] The first heating device 42 and the second heating device 33 continue to heat up, the second heating temperature set for the first heating device 42 is T3, and the T3 temperature is 190 degrees Celsius to 220 degrees Celsius. The second heating temperature set for the second heating device 33 is T4, and the T4 temperature is 190 degrees Celsius to 220 degrees Celsius. The time for the second heating device 33 to heat to the T4 temperature is less than the time for the first heating device 42 to heat to the T3 temperature. In the temperature rising stage, the temperature at the through hole 60 is greater than the temperatures at other positions, which can increase the heating speed of the second material, thereby shortening the heating time of the second material to compensate for the time when the second material has not been heated once. When the first heating device 42 and the second heating temperature reach the temperatures T3 and T4 respectively, the first material and the second material maintain the temperature and continue to be heated in the mold cavity 4.

[0064] S6. Sole 6 molding:

[0065] The sole 6 is formed, the first material forms a first part 61 on the sole 6, and the second material forms a second part 62 in the through hole 60 of the sole 6. The first driving mechanism 1 drives the upper mold 2 and the lower mold 3 to open the mold to take out the sole 6.

[0066] The hardness of the second part 62 is usually greater than that of the first part 61, and the second part 62 plays a good supporting role. There are at least two second parts 62, and at least one second part 62 is provided on the heel and sole of the sole 6; in another embodiment, the hardness of the second part 62 can also be less than that of the first part 61, and the second part 62 plays a good buffering role; in another embodiment, the hardness of the first part 61 and the hardness of the second part 62 can also be the same, and their anti-slip effects or other effects can be set to be different. In another embodiment, the second part 62 can also be spread throughout the sole 6 or arranged in other ways on the sole 6 to achieve different performances.

[0067] The number of the second parts 62 can be one, two, three or even more, depending on the specific situation.

[0068] The temperature of T1 is usually set to 120 degrees Celsius, and the temperature of T2 is usually set to 150 degrees Celsius. The temperature of T1 can also be set to 95 degrees Celsius, 110 degrees Celsius, 135 degrees Celsius, etc., and the temperature of T2 can also be set to 138 degrees Celsius, 155 degrees Celsius, 160 degrees Celsius, etc. The set temperature is related to the heating time, the material of the first material and the second material, the volume of the second material, etc. When the lifting seat 31 descends, the first material around the through hole 60 of the sole 6 reaches a relatively soft solid structure, and the lifting seat 31 can be demolded smoothly without deforming the sole 6 at the through hole 60.

[0069] In one embodiment, reference Figure 7 The telescopic end of the second driving mechanism 32 can be connected to a base plate 320 , and a plurality of lifting seats 31 are fixed on the base plate 320 . The second driving mechanism 32 can drive the base plate 320 to lift all the lifting seats 31 .

[0070] The first thermocouple 34 may be replaced by other temperature sensors, or the first thermocouple 34 may not be provided, depending on specific circumstances.

[0071] The second thermocouple 43 may be replaced by other temperature sensors, or the second thermocouple 43 may not be provided, depending on specific circumstances.

[0072] The first material can be EVA material or other softer materials, and the second material can be PVC material or other wear-resistant and non-slip materials. This structure can make the entire sole 6 soft, and the interaction force between the heel and the sole of the foot and the ground is relatively large, which has good wear-resistant and non-slip effects. The first material and the second material can also be composite materials, which can be set according to the specific situation.

[0073] The first heating device 42 and the second heating device 33 may be heating tubes or other heating devices, which are configured according to specific circumstances.

[0074] The first driving mechanism 1 is a hydraulic cylinder, a pneumatic cylinder or other devices, which are well-known devices.

[0075] The second driving mechanism 32 may be an oil cylinder, an air cylinder or other devices, which are well-known devices and will not be described in detail here.

[0076] The first unloading device 51 and the second unloading device 52 are devices for adding materials when the sole 6 is produced. They are well-known devices and will not be described in detail here.

[0077] refer to Figure 7 In one embodiment, a mounting opening 310 is provided in the lifting seat 31 , and a first thermocouple 34 is connected to the mounting opening 310 . The first thermocouple 34 can monitor the temperature of the lifting seat 31 in real time.

[0078] refer to Figures 8 to 10 In another embodiment, a wire groove 41 is provided on the upper mold 2 and the lower mold 3, and the first heating device 42 includes a heating wire arranged in the wire groove 41. The rear end of the heating wire is connected to the second thermocouple 43, and the second thermocouple 43 is located in the wire groove 41. The outer wall of the wire groove 41 is filled with a sealing layer 44, and the sealing layer 44 seals the heating wire in the wire groove 41. The wire groove 41 can be set at at least one position of the top of the upper mold 2, the bottom of the lower mold 3, the side wall of the upper mold 2, and the side wall of the lower mold 3, and is set according to the specific situation.

[0079] In another embodiment, a conventional heating method may be used for heating, where a heating plate is provided on the upper mold 2, and a heating tube is provided on the heating plate. This heating method consumes a large amount of heat.

[0080] refer to Figure 12 to Figure 14 The lower mold 3 and the upper mold 2 of the present invention can also adopt the following structure: the lifting seat 31 of the lower mold 3 is tilted, and some or all of the lifting seats 31 are paired, each lifting seat 31 is connected to a second driving mechanism 32, and the two lifting seats 31 can form an inverted "V" shape structure, forming an inverted "V" through hole 60, so that the second part 62 is an inverted "V" shape structure. This structure not only has a supporting function, but also can improve the cushioning property of the second part 62, so that the second part 62 can bend and deform, which increases wearing comfort.

[0081] refer to Fig.15 and Fig.16 The present invention can also adopt the following structure: it also includes a third feeding device 53, which can feed the material into part of the through hole 60 to form a third part 63 on the sole 6, so that the sole 6 has three different materials. With this structure, the structure of the sole 6 is more diverse and the performance is more perfect.

[0082] In another embodiment, reference Fig.17 The third material can be a rubber material or other wear-resistant material. When the lifting seat 31 corresponding to the third material descends, the top surface of the lifting seat 31 is lower than the bottom surface of the inner wall of the mold cavity 4, and a depression is formed on the top of the lifting seat 31. When the third material is formed, a downwardly protruding anti-skid portion 630 is formed at the bottom of the sole 6. This structure can greatly improve the anti-skid effect of the sole 6, and can manufacture anti-skid shoes, football shoes, etc.

[0083] The present invention may further include a fourth material discharging device, a fifth material discharging device or more material discharging ports, so that the sole 6 has a variety of different materials, thereby improving the performance of the sole 6.

[0084] 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 sole production and processing technology, characterized in that: The following steps are involved: S1.Mold closing: The first driving mechanism drives the upper mold and the lower mold to close the mold, so that a mold cavity in the shape of a shoe sole is formed between the upper mold and the lower mold; The lower mold is provided with at least one lifting seat, which is driven by a second driving mechanism and can be moved into the mold cavity; the lifting seat is connected to a second heating device; the upper mold is provided with a first feeding port and at least one second feeding port, the first feeding port is connected to a first feeding device, the first feeding device has a first material, the second feeding port is connected to a second feeding device, the second feeding device has a second material; S2. First material blanking: The second driving mechanism drives the lifting seat to rise, the lifting seat moves to the top of the mold cavity and blocks the second material discharge port, and the first material discharge device discharges the first material into the mold cavity; S3. One-time heating: The first heating device heats the first material in the mold cavity, and the second heating device heats the lifting seat. The first material is heated in the mold cavity, and the first material foams and expands in the mold cavity. The first heating device sets a first heating temperature of T1, T1 is 100 degrees Celsius to 130 degrees Celsius, and the second heating device sets a first heating temperature of T2, T2 is 140 degrees Celsius to 170 degrees Celsius. When the temperature of the second heating device reaches T2, the temperature of T2 is maintained, and a through hole is formed at the position of the lifting seat in the sole. The temperature of the through hole is higher than the temperature of other positions of the sole. The first material at the through hole foams, expands, and adheres together to form a certain hardness, but does not reach the hardness of complete heating and molding. S4. Unloading of the second material: The second driving mechanism drives the lifting seat to descend, the lifting seat is separated from the through hole, and the second unloading device unloads the second material into the through hole; S5. Secondary heating: The first heating device and the second heating device continue to heat up, the second heating temperature set by the first heating device is T3, the T3 temperature is 190 degrees Celsius to 220 degrees Celsius, the second heating temperature set by the second heating device is T4, the T4 temperature is 190 degrees Celsius to 220 degrees Celsius, when the first heating device and the second heating temperature reach the temperature T3 and T4 respectively, the first material and the second material are continuously heated and foamed in the mold cavity and bonded together; S6.Sole molding: The first material forms a first part on the sole, and the second material forms a second part in the through hole of the sole. The sole is formed, and the first driving mechanism drives the upper mold and the lower mold to open the mold to take out the sole.

2. A sole production and processing technology according to claim 1, characterized in that: The hardness of the second part is greater than that of the first part, and the second part plays a good supporting role.

3. A sole production and processing technology according to claim 1, characterized in that: The hardness of the second part is lower than that of the first part, and the second part plays a good buffering role.

4. A sole production and processing technology according to claim 2 or 3, characterized in that: There are at least two second parts, and at least one second part is provided on the heel of the shoe sole and the sole of the shoe.

5. The sole production and processing technology according to claim 1 is characterized in that: The lifting seat is provided with an installation opening, and the installation opening is connected with a first thermocouple. During the heating process, the first thermocouple can monitor the temperature of the lifting seat in real time and feed back the temperature value to the system, thereby controlling the temperature of the second heating device.

6. The sole production and processing technology according to claim 1, characterized in that: The upper mold and the lower mold are provided with wire grooves, and the first heating device includes a heating wire arranged in the wire grooves.

7. A sole production and processing technology according to claim 6, characterized in that: The rear end of the heating wire is connected to a second thermocouple, and the second thermocouple is located in the wire groove.

8. The sole production and processing technology according to claim 6, characterized in that: The outer wall of the wire groove is filled with a sealing layer, and the sealing layer seals the heating wire in the wire groove.

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