Gland and bottom-mold-free bottom mold bottom pressing device

Abstract

The invention relates to a pressing cover and a sole-mold-free sole pressing device, and belongs to the field of shoemaking, the pressing cover comprises an upper mold body, an upper surrounding edge arranged on the lower surface of the upper mold body and an elastic and hollow upper bag body, the upper bag body is located on the inner side of the upper surrounding edge, and the upper mold body is provided with a first through hole communicated with the interior of the upper bag body; the first through hole is constructed to be used for filling the upper bag body with filler so as to change the size of the upper bag body. The pressing cover is provided with the upper bag body, the size of the upper bag body can be changed by filling the filler so as to meet the sole pressing requirements of different shoe types, and the problem that an existing pressing block is poor in universality is solved. According to the sole pressing device of the sole-free mold, the liftable supporting plate is arranged in the lower mold body, the highest positions of different shoe types can be always connected with the pressing cover in a pressing mode by controlling the supporting plate to ascend and descend, so that the different shoe types can be fixed, the situation that the sole pressing quality of the shoes is affected due to the fact that the shoes incline during pressurization is avoided, and the universality of the sole pressing device of the sole-free mold is further expanded.

Description

Technical Field

[0001] This application relates to the field of footwear manufacturing, and in particular to a capping and sole-pressing device without a sole mold. Background Technology

[0002] In current sole-pressing machines without molds, in order to obtain a good pressing effect, a pressing block is set on the lower surface of the pressing cover corresponding to the toe and upper of the shoe. When the pressing cover and the lower mold are closed, the pressing block presses tightly on the toe and upper of the shoe to prevent the toe from tilting due to uneven force, which would affect the pressing quality of the shoe.

[0003] For example, the shoe upper positioning block shown in patent publication number CN221931431U and the front pressure block shown in patent publication number CN116763044A are both like this.

[0004] However, the inventors discovered in their daily work that the volume of the aforementioned pressing block cannot be changed. It can only play a role in providing moderate pressure on the toe and upper of certain shoe types during the pressing process, and cannot be applied to more shoe types. For example, when the toe height of the shoe type is too large, it means that after the pressing cover and the lower mold are closed, the downward pressure of the pressing block on the toe and upper is too large, which may damage the toe. On the other hand, when the toe height of the shoe type is too small, it means that after the pressing cover and the lower mold are closed, the downward pressure of the pressing block on the toe and upper is too small, which cannot effectively press the toe and upper, affecting the quality of the shoe pressing.

[0005] Although the problem can be solved by replacing the briquette blocks with different volumes, the replacement operation is quite troublesome, time-consuming and labor-intensive, and the downtime for replacement will greatly delay production. At the same time, the cost of configuring multiple briquette blocks of different volumes is also relatively high. Summary of the Invention

[0006] To address the problem of poor applicability of existing pressure blocks, this application provides a pressure cap and a bottom-pressing device without a bottom mold.

[0007] In one aspect of this disclosure, a cap is provided, including an upper mold body, an upper rim disposed on the lower surface of the upper mold body, and an elastic and hollow upper bladder body, the upper bladder body being located inside the upper rim. The upper mold body is provided with a through hole communicating with the interior of the upper bladder body, the through hole being configured to fill the interior of the upper bladder body with a filler to change the volume of the upper bladder body.

[0008] By adopting the above technical solution, the upper bladder can change its size by filling it with filler material to adapt to the pressure requirements of different shoe models, thus solving the problem of poor universality of existing pressure blocks.

[0009] Preferably, the lower surface of the upper mold body is recessed inward to form a receiving hole, which is located next to the upper bladder body.

[0010] By adopting the above technical solution, the upper part of the shoe, the collar, the tongue, the lining and other parts of the shoe with a large heel can be inserted into the receiving hole, thereby meeting the pressing requirements of such shoes with a large heel, while keeping the shoe placement area and the depth of the mold cavity unchanged, without increasing the amount of air / oil consumed.

[0011] Preferably, a pressure post is provided in the receiving hole, the pressure post is fixedly connected to the upper mold body, and the distance between the pressure post and the opening of the receiving hole can be adjusted relative to the upper mold body.

[0012] By adopting the above technical solution, shoes of different heights can be pressed and fixed in the shoe placement area for high-quality sole pressing.

[0013] Preferably, the upper end of the receiving hole is provided with a hole cover that is fixedly connected to the upper mold body, and the pressure column can be slidably and fixedly connected to the hole cover along the depth direction of the receiving hole.

[0014] By adopting the above technical solution, the hole depth of the receiving hole and the sliding amount of the pressure column are increased by using the hole cover, which can meet the pressure operation requirements of shoes with greater height and further expand the range of applicable shoe types.

[0015] Preferably, the upper mold body is provided with a negative pressure hole, one end of which is located inside the upper rim or next to the upper bladder, and the other end of which is connected to an air extraction device to extract gas from inside the upper rim or next to the upper bladder.

[0016] By adopting the above technical solution, a negative pressure environment can be created in the shoe placement area, improving the efficiency and quality of sole pressing.

[0017] In another aspect of this disclosure, a sole-pressing device without a bottom mold is provided, including a lower mold and a pressing cover. The pressing cover is connected to a lifting device, which drives the pressing cover to rise and fall. The lower mold includes a lower mold body and a lower bladder. The upper surface of the lower mold body is recessed inward to form a mold cavity. An elastic lower bladder is provided in the mold cavity. The lower bladder seals the mold cavity and extends downward to form a shoe placement area for placing shoes. The lower mold body is provided with several through holes II that communicate with the mold cavity. The several through holes II are configured to fill the mold cavity with filler to compress the volume of the shoe placement area and to allow the filler in the mold cavity to leave the mold cavity.

[0018] By adopting the above technical solution, the lifting device drives the pressure cap to rise and fall in conjunction with the lower mold to complete the shoe sole pressing operation.

[0019] Preferably, a support plate is provided in the mold cavity. The support plate is located below the lower bladder and is used to support shoes in the shoe placement area. The support plate is connected to a second lifting device, which drives the support plate to move up and down in the mold cavity.

[0020] By adopting the above technical solution, after the shoes are placed in the shoe placement area, they are supported by a support plate, which then smoothly lowers the shoes to the pressing position. After pressing, the shoes are lifted back up to the retrieval position, where they can be removed. This design eliminates the need to place the shoes deep inside the shoe placement area, shortening the shoe retrieval time and improving efficiency, while also meeting the pressing requirements for taller shoes. Furthermore, the support plate helps maintain the shoes' stability, preventing wobbling during pressing and ensuring quality. Simultaneously, the lifting device jacks up the support plate, working in conjunction with the pressure cap to ensure that the highest point of different shoe types always contacts the pressure cap, thus fixing shoes of varying heights and preventing tilting during air / oil inflation of the mold cavity, which could affect the pressing quality. This further expands the versatility of the sole-free mold pressing device. Moreover, increasing the lifting force of the lifting device jacks up the support plate can meet the pressing requirements of special shoe types requiring greater pressing force, such as rubber-soled shoes and safety shoes.

[0021] Preferably, a support plate is provided in the mold cavity, the support plate is located below the lower bladder, and is used to support shoes in the shoe placement area. An elastic pad is provided on the upper surface of the support plate, and the elastic pad is configured to reduce its thickness when pressed down by the shoes.

[0022] By adopting the above technical solution, when the tray is fixedly set in the mold cavity, the elastic pad can support the shoes in the shoe placement area and smoothly lower them to the pressing position. After pressing is completed, the pressure cap moves upward, and the pressed elastic pad drives the shoes to rise smoothly to the shoe removal position, where the shoes waiting to be pressed are removed. This design eliminates the need to place the shoes deep into the bottom of the shoe placement area, shortening the shoe removal time and improving the efficiency of shoe removal. In addition, the elastic pad supports the shoes, helping to maintain their stable posture and preventing them from shaking during the pressing process, thus ensuring the quality of pressing. At the same time, by using the elastic pad to support the shoes, in conjunction with the pressure cap, the highest point of shoes of different heights can always be pressed against the pressure cap. This can fix different shoe types and prevent the shoes from tilting when the mold cavity is pressurized with air / oil, which would affect the quality of pressing. This further expands the universality of the sole-free mold pressing device.

[0023] Preferably, the second through hole includes an air inlet and an air outlet. The air inlet includes an air inlet one and an air inlet two. The air pressures of the air inlet one and the air inlet two are different when they are used to fill the mold cavity. The lower mold further includes a throttle module, which includes: A gas storage device 1, wherein the inlet end of the gas storage device 1 is connected to a pressurizing device, the inlet end of the pressurizing device is connected to a gas supply pipe 1, the outlet end of the gas storage device 1 is connected to an inlet pipe 1, a control valve 1 is provided on the inlet pipe 1, and the outlet end of the inlet pipe 1 is connected to an inlet port 1. Gas storage device 2, the outlet end of the gas storage device 2 is connected to the inlet pipe 2 and the supply pipe 2, the inlet pipe 2 is equipped with the control valve 2, the outlet end of the inlet pipe 2 is connected to the inlet hole 2, the supply pipe 2 is connected to the inlet end of the booster device, the supply pipe 2 is equipped with the control valve 4, the inlet end of the gas storage device 2 is connected to the exhaust pipe, the exhaust pipe is equipped with the control valve 3, the inlet end of the exhaust pipe is connected to the exhaust hole; The air pressure detection device is installed on the first air storage device and the second air storage device.

[0024] By adopting the above technical solution, the gas supplied by the external air source through the air supply pipe is pressurized by the pressurizing device to form a high-pressure gas source, which is stored in the air storage device. The high-pressure gas is then supplied to the lower mold through the air inlet pipe. At the same time, the gas recovered from the exhaust pipe is stored in the air storage device and then supplied to the lower mold again through the air inlet pipe. This reduces the amount of external air source used, thereby reducing the cost of shoe sole pressing.

[0025] Preferably, the lower mold is provided with: The feeding mechanism is designed to convey shoes to the downward mold; The unloading mechanism is designed to deliver the shoes from the lower mold; The two transfer mechanisms are respectively configured to transfer shoes from the feeding mechanism to the shoe placement area, and to transfer shoes from the shoe placement area to the discharging mechanism.

[0026] By adopting the above technical solution, unmanned automatic sole pressing operation of shoes can be realized in an assembly line manner, with high pressing efficiency.

[0027] Beneficial technical effects: The cap of this application has an upper bladder, which can change its size by filling it with filler to adapt to the pressure requirements of different shoe types, thus solving the problem of poor universality of existing pressure blocks.

[0028] The sole-free molding device of this application has a liftable support plate in the lower mold body. By controlling the lifting of the support plate, the highest point of different shoe types can always be pressed against the pressure cap. In this way, shoe types of different heights can be fixed, avoiding the shoes from tilting when the mold cavity is filled with air / oil and pressurized, which would affect the quality of the shoe sole pressing and further expands the universality of the sole-free molding device. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the bottom-pressing device without a bottom mold in the embodiments of this application. Figure 1 .

[0030] Figure 2 This is a schematic diagram of the bottom-pressing device without a bottom mold in the embodiments of this application. Figure 2 .

[0031] Figure 3 This is the internal structure of the bottomless molding and pressing device in the embodiments of this application. Figure 1 .

[0032] Figure 4 This is the internal structure of the bottomless molding and pressing device in the embodiments of this application. Figure 2 .

[0033] Figure 5 This is a schematic diagram of the cover structure in an embodiment of this application. Figure 1 .

[0034] Figure 6 This is a schematic diagram of the cover structure in an embodiment of this application. Figure 2 .

[0035] Figure 7 This is a schematic diagram of the lower mold structure in the embodiments of this application. Figure 1 ; Figure 8 This is a schematic diagram of the lower mold structure in the embodiments of this application. Figure 2 ; Figure 9 This is a top view of the lower mold in an embodiment of this application; Figure 10 yes Figure 9 BB section view in the middle.

[0036] Figure 11 This is a schematic diagram of the cover structure in an embodiment of this application. Figure 3 .

[0037] Figure 12 This is a schematic diagram of the cover structure in an embodiment of this application. Figure 4 .

[0038] Figure 13 This is a schematic diagram of the installation of the elastic pad.

[0039] Figure 14 This is a structural diagram of the swing arm mechanism and clamp. Figure 1 .

[0040] Figure 15 This is a structural diagram of the swing arm mechanism and clamp. Figure 2 .

[0041] Figure 16 This is a schematic diagram of the parallel clamp structure.

[0042] Figure 17 This is a schematic diagram of the throttle module.

[0043] Explanation of reference numerals in the attached figures: 1. Machine base; 2. Lower mold body; 3. Lower bladder body; 4. Mold cavity; 5. Support plate; 6. Lifting device II; 7. Shoe; 8. Exhaust port; 9. Air inlet I; 10. Air inlet II; 11. Feeding mechanism; 12. Three-axis robot; 13. Discharge mechanism; 14. Lifting device one; 141. Motor; 142. Rack; 143. Lifting frame; 144. Guide rod; 145. Lifting component; 15. Upper mold body; 151. Through hole one; 16. Upper edge; 17. Upper pocket; 18. Lower edge; 19. Upper template; 20. Shoe placement area; 21. Receiving hole; 22. Pressure post; 23. Hole cover; 24. Negative pressure hole; 25. Elastic pad; 26. Swing arm mechanism; 261. Lateral movement component; 262. Mounting plate; 263. Drive component; 264. Rocker arm; 265. Vertical slide; 266. Horizontal slide; 27. Fixture; 270. Clamping block; 271. Push-pull component; 272. Frame; 273. Movable block; 274. Clamping arm one; 275. Clamping arm two; 276. Fixed block; 277. Connecting rod; 278. Clamping arm three; 2781. Crossbeam; 279. Movable seat; 2710. Limiting post; 2711. Clamping surface; 28. Throttle module; 281. Gas storage device one; 282. Boost device; 283. Gas supply pipe one; 284. Intake pipe one; 285. Exhaust pipe; 286. Gas storage device two; 287. Intake pipe two; 288. Control valve two; 289. Control valve one; 290. Control valve three; 291. Silencer; 292. Gas supply pipe two; 293. Air pressure detection device; 294. Control valve four. Detailed Implementation

[0044] The following is in conjunction with the appendix Figures 1-10 This application will be described in further detail.

[0045] In one aspect of this disclosure, a cap is provided, such as Figure 5 and Figure 6 As shown, the pressure cap includes an upper mold body 15, an upper rim 16 located on the lower surface of the upper mold body 15, and an elastic and hollow upper bladder body 17. The upper bladder body 17 is hollow inside and located inside the upper rim 16. The upper rim 16 is used to protect the lower bladder body 3 during the pressing process of the shoe 7, and to prevent the lower bladder body 3 from contacting the shoe last during the pressing process, which would cause the lower bladder body 3 to be punctured by the shoe last. Therefore, the upper rim 16 and the lower rim 18 have the same function, which is to protect the lower bladder body 3.

[0046] like Figure 5As shown, the upper mold body 15 is provided with a through hole 151 communicating with the interior of the upper bladder body 17. The through hole 151 is configured to allow filling material to be inserted into the upper bladder body 17 to change the volume of the upper bladder body 17. In this way, the upper bladder body 17 can change its own size by filling material to adapt to the pressure requirements of different shoe models, solving the problem of poor universality of existing pressure blocks. Because different shoe models have different toe heights, or require different downward pressure from the upper bladder body 17, these can all be achieved by changing the volume of the upper bladder body 17, thus well meeting the pressure requirements of different shoe models, with high universality and wide application range.

[0047] In this embodiment, the upper capsule 17 is made of an elastic material so that it can expand by filling it with a filler, changing its volume, and shrink by removing the filler. Specifically, the filler can be solid particles, gas, liquid, or other substances, preferably gas or liquid.

[0048] In this embodiment, the pressure cap is connected to a lifting device 14. The lifting device 14 drives the pressure cap to descend and cooperate with the lower mold to complete the pressing operation of the shoe 7.

[0049] Specifically, such as Figure 5 , Figure 6 and Figure 11 As shown, the lifting device 14 includes: a lifting frame 143, a motor 141, a rack 142, a guide rod 144, and a lifting component 145. The lower end of the lifting frame 143 is connected to the upper mold body 15. The motor 141 is fixedly connected to the upper end of the lifting frame 143. The rack 142 is vertically arranged and slidably connected to the upper end of the lifting frame 143. The rack 142 is connected to the motor 141 for transmission. When the motor 141 starts, it drives the rack 142 to rise and fall. The lower end of the rack 142 is connected to the lifting component 145. The rack 142 drives the lifting component 145 to rise and fall. The lifting component 145 is connected to the lifting frame 143. The rise and fall of the lifting component 145 drives the upper mold body 15 at the lower end of the lifting frame 143 to rise and fall. The lower end of the guide rod 144 is connected to the upper mold body 15, and the upper end is axially slidably connected to the lifting component 145 and the upper end of the lifting frame 143. The guide rod 144 ensures that the lifting frame 143 rises and falls smoothly, the structure is stable, and the failure rate is low.

[0050] Furthermore, such as Figure 6 As shown, the lower surface of the upper mold body 15 is provided with an upper template 19. The upper bladder body 17, the upper perimeter 16, and the upper template 19 are integrally formed. The upper bladder body 17 and the upper perimeter 16 are located on the lower surface of the upper template 19. This design facilitates the installation and replacement of the upper bladder body 17 and the upper perimeter 16.

[0051] In the embodiments disclosed herein, such as Figure 6As shown, the lower surface of the upper mold body 15 is recessed inward to form a receiving hole 21. The receiving hole 21 is located next to the upper bladder body 17. This design allows the upper part of the shoe 7, such as the heel, the collar, the tongue, and the lining, to be inserted into the receiving hole 21, while the toe remains pressed against the upper bladder body 17. This satisfies the pressing requirements of the shoes 7 (such as high-top shoes, boots, etc.) with greater height, while keeping the depth of the shoe placement area 20 and the mold cavity 4 unchanged, without increasing the air / oil consumption.

[0052] Furthermore, such as Figure 6 As shown, a pressure post 22 is provided in the receiving hole 21. The pressure post 22 is fixedly connected to the upper mold body 15, and the distance between the pressure post 22 and the opening of the receiving hole 21 can be adjusted relative to the upper mold body 15. This design allows shoes 7 of different heights to be pressed and fixed in the shoe placement area 20 for the pressing operation. During the pressing process, the shoes 7 are clamped and fixed without shaking, ensuring a high-quality pressing operation.

[0053] As one embodiment, the pressure column 22 can be slid along the depth direction of the receiving hole 21 to adjust the distance between its lower end and the opening of the receiving hole 21. The pressure column 22 is threadedly or plugged into the upper mold body 15 for fixed connection. The distance between its lower end and the opening of the receiving hole 21 can be adjusted by rotating the pressure column 22. Alternatively, the locking of the pressure column 22 can be loosened to allow the pressure column 22 to slide. After the pressure column 22 slides into place, it can be locked and fixed.

[0054] Furthermore, such as Figure 12 As shown, the upper end of the receiving hole 21 is provided with a hole cover 23 that is fixedly connected to the upper mold body 15. The pressure column 22 can be slidably fixedly connected to the hole cover 23 along the depth direction of the receiving hole 21. With this design, the hole cover 23 is used to expand the depth of the receiving hole 21 and the sliding amount of the pressure column 22, which meets the pressing operation requirements of shoes 7 with greater height, and further expands the range of applicable shoe types.

[0055] In this embodiment, the upper mold body 15 is provided with a negative pressure hole 24. One end of the negative pressure hole 24 is located inside the upper circumference 16 or next to the upper bladder 17. When the other end of the negative pressure hole 24 is connected to an air extraction device, it can extract the gas inside the upper circumference 16 or next to the upper bladder 17. With this design, when the pressure cap and the lower mold body 2 are pressed together, the air in the shoe placement area 20 can be extracted by means of the negative pressure hole 24, so that the shoe placement area 20 forms a negative pressure environment, which improves the efficiency of the bottom pressing operation, increases the squeezing force of the lower bladder 3 on the side of the shoe sole, and improves the bottom pressing quality.

[0056] As an example, such as Figure 12 As shown, the other end of the negative pressure hole 24 is located at the hole cover 23.

[0057] In another aspect of the embodiments of this disclosure, a bottom-molding-free pressing device is provided, such as... Figures 1-4As shown, the bottomless mold pressing device includes a lower mold and the aforementioned pressing cover. The pressing cover is connected to a lifting device 14, which drives the pressing cover to rise and fall. The lower mold is located below the pressing cover. Figure 9 and Figure 10 As shown, the lower mold includes a lower mold body 2 and a lower bladder body 3. The upper surface of the lower mold body 2 is recessed inward to form a mold cavity 4. An elastic lower bladder body 3 is provided in the mold cavity 4. The lower bladder body 3 seals the mold cavity 4. The lower bladder body 3 extends downward to form a shoe placement area 20 for placing shoes 7.

[0058] The lower mold body 2 is provided with several through holes 2 communicating with the mold cavity 4. The several through holes 2 are configured to fill the mold cavity 4 with filler material to compress the volume of the shoe placement area 20 and to allow the filler material in the mold cavity 4 to leave the mold cavity 4. The lower bladder body 3 is made of elastic material. When filler material is filled into the mold cavity 4, the filler material compresses the lower bladder body 3, causing the volume of the shoe placement area 20 to shrink until the inner wall of the lower bladder body 3 is tightly attached to the side of the sole of the shoe 7, completing the sole pressing operation. After the sole pressing is completed, the filler material leaves the mold cavity 4, and the compressed lower bladder body 3 automatically returns to its original shape. Then the shoes with the sole pressed can be removed.

[0059] During the specific pressing process, the lifting device 14 is required to drive the pressure cap to descend and engage with the lower mold to complete the pressing and fixing of the shoe 7. Then, filler material is injected into the mold cavity 4 to perform the pressing operation of the shoe 7. The filler material is preferably gas or liquid.

[0060] In this embodiment of the disclosure, when the filler is gas, the second through hole includes an air inlet and an air outlet 8. The air inlet includes an air inlet 9 and an air inlet 10. The air pressures of the air inlet 9 and the air inlet 10 that fill the mold cavity 4 are different.

[0061] In this embodiment of the disclosure, the lower mold further includes a throttle module 28.

[0062] Specifically, such as Figure 17 As shown, the gas-saving module 28 includes: a first gas storage device 281, a second gas storage device 286, and a gas pressure detection device 293. The inlet end of the first gas storage device 281 is connected to a booster device 282, and the inlet end of the booster device 282 is connected to a first gas supply pipe 283. Gas supplied from an external gas source enters the booster device 282 through the first gas supply pipe 283. The booster device 282 pressurizes the gas to form high-pressure gas, which is stored in the first gas storage device 281. In this way, the gas pressure requirements of the bottomless molding device are met, and the gas pressure supplied to the bottomless molding device is stable and reliable, thereby ensuring the normal operation of the bottomless molding device. Even if the external gas source is suddenly interrupted, the high-pressure gas stored in the first gas storage device 281 can still supply the bottomless molding device for a relatively long time, enough to wait for the external gas source to be repaired and restored, without delaying production.

[0063] like Figure 17 As shown, the outlet of the gas storage device 281 is connected to the inlet pipe 284. The inlet pipe 284 is equipped with a control valve 289. The outlet of the inlet pipe 284 is connected to the inlet hole 9 for filling the mold cavity 4 with high-pressure gas. The control valve 289 is used to control the opening and closing of the inlet pipe 284.

[0064] like Figure 17 As shown, the outlet of the gas storage device 286 is connected to the inlet pipe 287 and the supply pipe 292. The inlet pipe 287 is equipped with a control valve 288. The outlet of the inlet pipe 287 is connected to the inlet hole 10 for filling the mold cavity 4 with low-pressure recovered gas. The control valve 288 is used to control the opening and closing of the inlet pipe 287.

[0065] like Figure 17 As shown, the second gas supply pipe 292 is connected to the air inlet of the booster device 282. The second gas supply pipe 292 is equipped with a fourth control valve 294. When the second gas storage device 286 stores a large amount of recovered gas and the gas pressure is high, in order to ensure the safety of the second gas storage device 286, the fourth control valve 294 can be opened to allow the gas in the second gas storage device 286 to enter the booster device 282. After the gas is further pressurized, it is stored in the first gas storage device 281. After the gas pressure in the second gas storage device 286 drops to the normal range, the fourth control valve 294 is closed, and the recovered gas can continue to be stored in the second gas storage device 286.

[0066] like Figure 17 As shown, the air inlet of the second gas storage device 286 is connected to an exhaust pipe 285. A control valve 290 is installed on the exhaust pipe 285. The air inlet of the exhaust pipe 285 is connected to an exhaust port 8, used to recover the high-pressure gas discharged from the mold cavity 4. When the sole of a shoe 7 is pressed, and it is necessary to discharge the high-pressure gas from the mold cavity 4, the control valve 290 is opened, allowing the high-pressure gas discharged from the mold cavity 4 to enter the second gas storage device 286 through the exhaust pipe 285.

[0067] Furthermore, such as Figure 17 As shown, the control valve 290 has an exhaust port connected to the outside, and the exhaust port is equipped with a silencer 291. This design allows the control valve 290 to cut off the gas supply to the gas storage device 286 when the gas pressure inside the storage device 286 is high, instead directly discharging the remaining gas recovered by the exhaust pipe 285 into the atmosphere to protect the safety of the gas storage device 286. The silencer 291 reduces exhaust noise.

[0068] In this embodiment, as Figure 17As shown, both the first gas storage device 281 and the second gas storage device 286 are equipped with a gas pressure detection device 293 to detect the gas pressure in the first gas storage device 281 and the second gas storage device 286 in real time, thereby providing a reference for subsequent actions to control the gas pressure stability and avoiding excessively high gas pressure in the first gas storage device 281 and the second gas storage device 286 from affecting gas safety.

[0069] As can be seen, the gas-saving module 28 in this embodiment is equipped with two gas storage devices. Gas storage device 1 281 is used to store a stable high-pressure gas source, and gas storage device 286 is used to store recovered gas for secondary use. Specifically, the gas supplied by the external gas source through gas supply pipe 1 283 is pressurized by the booster device 282 to form a high-pressure gas source, which is stored in gas storage device 1 281. The high-pressure gas is then supplied to the mold cavity 4 through air inlet pipe 1 284. At the same time, gas storage device 286 stores the gas recovered by exhaust pipe 285, and then supplies it back to the mold cavity 4 through air inlet pipe 287. In this way, the amount of external gas used can be reduced, thereby reducing the cost of pressing the sole of the shoe 7.

[0070] Furthermore, the two-stage inflation method adopted by the thrift module 28 in this embodiment to supply air to the mold cavity 4 also helps to improve the quality and efficiency of bottom pressing. For example, after the shoe 7 is placed in the shoe placement area 20 of the lower mold, during the process of controlling the descent of the upper mold and the clamping of the lower mold to press the shoe 7, the recovered air stored in the second air storage device 286 is injected into the mold cavity 4 through the second air inlet pipe 287 in advance. At this time, since the upper mold has not yet descended to the position and the shoe 7 is not clamped and fixed, the injected low-pressure gas will not cause the shoe 7 to deviate from the normal shape and affect the bottom pressing quality. After the upper mold descends to the position and clamps and fixes the shoe 7 with the lower mold, high-pressure gas is injected to make the mold cavity 4 quickly reach the air pressure required for bottom pressing and perform bottom pressing. In this way, the inflation step is started in advance, which can effectively save time, speed up the bottom pressing efficiency, and at the same time avoid the high-pressure airflow impacting the shoe 7 and causing the shoe 7 to deviate from the normal shape and affect the bottom pressing quality.

[0071] In other embodiments, the gas-saving module 28 can also supply gas to the elastic and hollow upper bladder 17 of the upper mold and recover the high-pressure gas in the upper bladder 17. This design enables energy-saving gas recovery and utilization in the bottom-forming device without a bottom mold, reducing the bottom-forming cost of the device.

[0072] Specifically, three through holes 151 are provided. The three through holes 151 are respectively connected to the air inlet pipe 284, the air inlet pipe 287, and the exhaust pipe 285, so that the air outlet of the air inlet pipe 284 and the air inlet of the exhaust pipe 285 are all connected to the upper bladder 17.

[0073] Furthermore, such as Figure 7 , Figure 8 , Figure 10As shown, a support plate 5 is provided in the mold cavity 4. The support plate 5 is located below the lower bladder 3. The support plate 5 is used to support the shoes 7 in the shoe placement area 20 to keep the shoes 7 stable and prevent them from shaking during the pressing process, thereby ensuring the quality of the pressing.

[0074] like Figure 7 , Figure 8 , Figure 10 As shown, the pallet 5 is connected to a lifting device 6, which drives the pallet 5 to rise and fall in the mold cavity 4, thereby improving the pressing efficiency and meeting the pressing requirements of various shoe types.

[0075] Specifically, after the shoe 7 is placed in the shoe placement area 20, the shoe 7 is lifted by the support plate 5. Then, the lifting device 6 controls the support plate 5 to drive the shoe 7 to descend smoothly to the bottoming position. After the bottoming is completed, the shoe 7 is lifted up to the shoe retrieval position. The shoe 7, which has been bottomed, is then taken away. This design eliminates the need to put the shoe 7 deep into the bottom of the shoe placement area 20, shortens the time for picking up and putting down the shoe 7, improves the efficiency of picking up and putting down the shoe 7, and meets the bottoming requirements of shoes with greater height.

[0076] In addition, by using the lifting device 26 to lift the support plate 5, and in conjunction with the pressure cap, the highest point of different shoe types can always be pressed against the pressure cap. In this way, shoe types of different heights can be fixed, and the shoes 7 will not tilt when the mold cavity 4 is filled with air / oil and pressurized, which will affect the quality of the sole pressing of the shoes 7. This further expands the universality of the sole pressing device without sole.

[0077] Furthermore, increasing the lifting force of the lifting device 26 to lift the support plate 5 can meet the pressing requirements of special shoe types such as rubber soles and safety shoes that require greater pressing force, thus making it suitable for pressing operations of various shoe types and with a wide range of applications.

[0078] Of course, in other embodiments, such as Figure 13 As shown, when the support plate 5 is fixedly installed in the mold cavity 4, an elastic pad 25 is provided on the upper surface of the support plate 5. The elastic pad 25 is used to support the shoes 7 in the shoe placement area 20 to descend smoothly. The elastic pad 25 is configured such that its thickness decreases after being pressed down by the shoes 7. This design ensures that the shoes 7 in the shoe placement area 20 descend smoothly by supporting the elastic pad 25, maintaining the stability of the shoes 7 and preventing them from shaking during the pressing process, thereby ensuring the quality of the pressing. Moreover, the elastic pad 25 occupies space in the mold cavity 4, resulting in a reduction in the amount of filler material that can be filled into the mold cavity 4, thus reducing the pressing cost.

[0079] Specifically, when the tray 5 is fixedly installed in the mold cavity 4, the lifting device 14 drives the pressure cover to descend and engage with the lower mold body 2. During this process, the pressure cover descends and presses down on the shoes 7 in the shoe placement area 20, thereby driving the shoes 7 to descend smoothly to the bottoming position and squeezing the elastic pad 25. After the bottoming is completed, the pressure cover moves up, and the compressed elastic pad 25 drives the shoes 7 to rise smoothly to the shoe removal position. The shoes 7 that have finished bottoming are then removed. With this design, it is not necessary to put the shoes 7 deep into the bottom of the shoe placement area 20, which shortens the time for picking up and putting down the shoes 7 and improves the efficiency of picking up and putting down the shoes 7.

[0080] In addition, the elastic pad 25 supports the shoe 7, which helps to keep the shoe 7 stable and prevents it from shaking during the pressing process, thus ensuring the pressing quality. At the same time, by using the elastic pad 25 to support the shoe 7, the highest point of the shoe with different heights can always be pressed against the pressing cap. In this way, different shoe types can be fixed in place, preventing the shoe 7 from tilting when the mold cavity 4 is filled with air / oil and pressurized, which would affect the pressing quality of the shoe 7. This further expands the universality of the sole-free mold pressing device.

[0081] As an example, the support plate 5 with an elastic pad 25 on its upper surface can also be designed to move up and down within the mold cavity 4. For instance, the support plate 5 can be moved up and down within the mold cavity 4 by a lifting device 2 6. This design has two advantages over the fixed support plate 5 design: First, when the shoe height is large, the lifting device 2 6 can be used to lower the support plate 5 within the mold cavity 4 to complete the pressing operation of the shoe 7, meeting the pressing requirements of shoes with greater height. Second, by using the lifting device 2 6 to lift the support plate 5, it is ensured that the highest point of different shoe shapes can always be pressed against the pressure cap, fixing shoe shapes of different heights. This prevents the shoe 7 from tilting when the mold cavity 4 is pressurized with air / oil, affecting the pressing quality of the shoe 7 and improving the reliability of the soleless mold pressing device.

[0082] Specifically, the material of the elastic pad 25 can be sponge.

[0083] like Figure 7 , Figure 8 , Figure 10 As shown, the shoe placement area 20 has a lower edge 18 on its side wall near the lower bladder 3. The lower edge 18 is fixedly connected to the lower mold body 2. During the pressing process of the shoe 7, the lower edge 18 is used to protect the lower bladder 3, preventing the lower bladder 3 from directly contacting the shoe last and puncturing the lower bladder 3, thus protecting the safety of the lower bladder 3.

[0084] Furthermore, such as Figures 1-4 As shown, the lower mold is provided with: The feeding mechanism 11 is configured to convey the shoe 7 to the downward mold; The material discharge mechanism 13 is configured to deliver the shoe 7 from the lower mold; Two transfer mechanisms are located on both sides of the lower mold. One of the transfer mechanisms is designed to transfer the shoes 7 conveyed by the feeding mechanism 11 to the shoe placement area 20 and place them on the tray 5 or elastic pad 25. Then, the tray 5 or elastic pad 25 descends, and the pressure cap descends and engages with the lower mold to press and fix the shoes 7. Next, filler is filled into the mold cavity 4 to perform the bottom pressing operation of the shoes 7. After the bottom pressing of the shoes 7 is completed, the shoes 7 rises and resets. The other transfer mechanism transfers the shoes 7 in the shoe placement area 20 to the discharge mechanism 13. The two transfer mechanisms cooperate with the pressure cap, lifting device 14, and lower mold to realize the unmanned automatic bottom pressing operation of the shoes 7 in an assembly line, with high bottom pressing efficiency.

[0085] At this time, as Figure 3 As shown, the bottomless mold pressing device also has a machine base 1, a lower mold body 2, a feeding mechanism 11, a discharging mechanism 13, and two conveying mechanisms installed on the machine base 1. Commonly, the feeding mechanism 11 and the discharging mechanism 13 are belt conveyors.

[0086] As an example, the transfer mechanism is a three-axis robot 12, such as... Figures 1-4 As shown, the three-axis robot 12 picks up the shoe 7 and moves it along the XYZ axes to transfer the shoe 7 delivered by the feeding mechanism 11 to the shoe placement area 20 and place it on the tray 5 or elastic pad 25. After the shoe 7 has been pressed down, the shoe 7 in the shoe placement area 20 is then transferred to the discharge mechanism 13.

[0087] Of course, in other embodiments, the transfer mechanism may also be a swing arm mechanism 26 and a clamp 27, such as Figure 14 and Figure 15 As shown, the swing arm mechanism 26 includes a lateral movement component 261, a mounting plate 262, a drive component 263, a rocker arm 264, a vertical slide 265, and a horizontal slide 266. The mounting plate 262 is connected to the lateral movement component 261, and the lateral movement component 261 drives the mounting plate 262 along... Figure 14 The rocker arm 264 moves laterally in the direction of the arrow shown. The driving component 263 is fixedly connected to the mounting plate 262. The lower end of the rocker arm 264 is connected to the driving component 263. The driving component 263 drives the upper end of the rocker arm 264 to swing around the lower end. The horizontal slide 266 is laterally slidably connected to the mounting plate 262, and the sliding direction of the horizontal slide 266 is perpendicular to the sliding direction of the mounting plate 262. The vertical slide 265 is vertically slidably connected to the horizontal slide 266. The clamp 27 is installed at the lower end of the vertical slide 265. The upper end of the rocker arm 264 is hinged to the vertical slide 265.

[0088] During operation, the drive component 263 drives the upper end of the rocker arm 264 to swing around its lower end, which in turn drives the vertical slide 265 and the clamp 27 below it to perform an arc-shaped motion, with the motion trajectory as follows: Figure 14As shown by the arc arrow, the clamp 27 performs an arc motion to pick up the shoe 7 from the feeding mechanism 11 and place it on the tray 5 or the elastic pad 25, or to transfer the shoe 7 in the shoe placement area 20 to the discharge mechanism 13.

[0089] Preferably, the transverse component 261 is a linear motor and the drive component 263 is a servo motor.

[0090] Furthermore, both the gripper of the three-axis robot 12 and the gripper 27 connecting the swing arm mechanism 26 are parallel grippers, such as... Figure 16 As shown, the parallel clamp includes a frame 272 and a push-pull component 271 mounted on the frame 272. A movable block 273 is mounted on the telescopic end of the push-pull component 271. A clamping arm 274 is hinged to each of the left and right ends of the movable block 273. A clamping arm 275 is hinged to the end of the clamping arm 274 away from the movable block 273. The middle of the clamping arm 275 is bent and hinged to a fixed block 276. The fixed block 276 is fixedly connected to the frame 272. One end of the clamping arm 275 is hinged to the clamping arm 274, and the other end is hinged to the clamping arm 278. Figure 16 As shown, the upper end of the clamping arm 278 is provided with a crossbeam 2781. The two transverse ends of the crossbeam 2781 are respectively hinged to the clamping arm 275 and the connecting rod 277. The end of the connecting rod 277 away from the crossbeam 2781 is hinged to the frame 272. The lower end of the clamping arm 278 is provided with a clamping block 270 facing the side of the other clamping arm 278. The clamping block 270 is fixedly installed on the movable seat 279. The movable seat 279 is hinged to the clamping arm 278 through the limiting post 2710.

[0091] When the parallel clamp is working, with Figure 16 For example, the push-pull component 271 drives the movable block 273 to rise and fall, which in turn drives the first clamping arm 274, the second clamping arm 275, and the connecting rod 277 to swing. The swinging of the first clamping arm 274, the second clamping arm 275, and the connecting rod 277 causes a pair of third clamping arms 278 to move diagonally upwards and away from each other or diagonally downwards and closer to each other. During the process of the pair of third clamping arms 278 moving away from each other or closer to each other, the third clamping arms 278 only translate and do not swing. The clamping surface 2711 of the clamping block 270 on the pair of third clamping arms 278 always remains vertical. With this design, the clamping surface 2711 of the parallel clamp is vertical at any height position, which can ensure maximum contact surface when clamping different shoe types, and the clamping is stable and reliable.

[0092] like Figure 16 As shown, multiple clamping blocks 270 are hinged to the lower side of the clamping arm 278. This design can adapt to the sides of various shoe shapes and make multiple contacts with the sides of the shoe, so that various shoe shapes can be firmly clamped with excellent clamping effect.

[0093] It should be noted that the shoe 7 in this embodiment is provided with a shoe last.

Claims

1. A pressure cap, characterized in that, It includes an upper mold body, an upper rim on the lower surface of the upper mold body, and an elastic and hollow upper bladder. The upper bladder is located inside the upper rim. The upper mold body is provided with a through hole that communicates with the interior of the upper bladder. The through hole is configured to fill the interior of the upper bladder with a filler to change the volume of the upper bladder.

2. The gland according to claim 1, characterized in that: The lower surface of the upper mold body is recessed inward to form a receiving hole, which is located next to the upper bladder body.

3. The cap according to claim 2, characterized in that: A pressure column is provided in the receiving hole. The pressure column is fixedly connected to the upper mold body, and the pressure column can be adjusted to slide relative to the upper mold body at a distance from the opening of the receiving hole.

4. The gland according to claim 3, characterized in that: The upper end of the receiving hole is provided with a hole cover that is fixedly connected to the upper mold body, and the pressure column can be slidably fixedly connected to the hole cover along the depth direction of the receiving hole.

5. The gland according to claim 1, characterized in that: The upper mold body is provided with a negative pressure hole. One end of the negative pressure hole is located inside the upper rim or next to the upper bladder. When the other end of the negative pressure hole is connected to an air extraction device, it can extract gas from inside the upper rim or next to the upper bladder.

6. A bottom-molding-free pressing device, characterized in that, The invention includes a lower mold and a cap according to any one of claims 1-5. The cap is connected to a lifting device, which drives the cap to rise and fall. The lower mold includes a lower mold body and a lower bladder. The upper surface of the lower mold body is recessed inward to form a mold cavity. An elastic lower bladder is provided in the mold cavity. The lower bladder seals the mold cavity and extends downward to form a shoe placement area for placing shoes. The lower mold body is provided with several through holes II communicating with the mold cavity. The several through holes II are configured to fill the mold cavity with filler to compress the volume of the shoe placement area and to allow the filler in the mold cavity to leave the mold cavity.

7. The bottomless molding and pressing device according to claim 6, characterized in that: The mold cavity is provided with a support plate, which is located below the lower bladder and is used to support the shoes in the shoe placement area. The support plate is connected to a second lifting device, which drives the support plate to move up and down in the mold cavity.

8. The bottomless molding and pressing device according to claim 6, characterized in that: The mold cavity is provided with a support plate, which is located below the lower bladder and is used to support the shoes in the shoe placement area. An elastic pad is provided on the upper surface of the support plate, and the elastic pad is configured to reduce its thickness when pressed down by the shoes.

9. The bottomless molding and pressing device according to claim 6, characterized in that: The second through hole includes an air inlet and an air outlet. The air inlet includes an air inlet one and an air inlet two. The air pressures of the air inlet one and the air inlet two are different when they are filled into the mold cavity. The lower mold further includes a throttle module, which includes: A gas storage device 1, wherein the inlet end of the gas storage device 1 is connected to a pressurizing device, the inlet end of the pressurizing device is connected to a gas supply pipe 1, the outlet end of the gas storage device 1 is connected to an inlet pipe 1, a control valve 1 is provided on the inlet pipe 1, and the outlet end of the inlet pipe 1 is connected to an inlet port 1. Gas storage device 2, the outlet end of the gas storage device 2 is connected to the inlet pipe 2 and the supply pipe 2, the inlet pipe 2 is equipped with the control valve 2, the outlet end of the inlet pipe 2 is connected to the inlet hole 2, the supply pipe 2 is connected to the inlet end of the booster device, the supply pipe 2 is equipped with the control valve 4, the inlet end of the gas storage device 2 is connected to the exhaust pipe, the exhaust pipe is equipped with the control valve 3, the inlet end of the exhaust pipe is connected to the exhaust hole; The air pressure detection device is installed on the first air storage device and the second air storage device.

10. The bottomless molding and pressing device according to claim 6, characterized in that: The lower mold is provided with: The feeding mechanism is designed to convey shoes to the downward mold; The unloading mechanism is designed to deliver the shoes from the lower mold; The two transfer mechanisms are respectively configured to transfer shoes from the feeding mechanism to the shoe placement area, and to transfer shoes from the shoe placement area to the discharging mechanism.

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