A press mechanism of a dieless sole press
By setting multiple tightening components and photoelectric switch limiting structures in the moldless sole pressing machine, comprehensive differentiated pressing of shoes is achieved, solving the problems of uneven pressing and high energy consumption, and improving the pressing quality and service life of shoes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WENZHOU DINGYA MACHINERY
- Filing Date
- 2025-10-15
- Publication Date
- 2026-06-23
Smart Images
Figure CN120982840B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of shoemaking equipment technology, specifically to a pressing mechanism for a moldless sole pressing machine. Background Technology
[0002] Making a pair of shoes involves cutting, sewing, and stretching the raw materials to create the basic shoe shape, followed by the bonding of the upper and sole. Bonding the upper and sole is the process of attaching the outsole to the stretched upper and insole using adhesive. This bonding process is a major step in shoemaking, and there are several methods, with gluing, vulcanization, molding, injection molding, and stitching being the five basic processes. Gluing is currently the most commonly used method on the market. Simply put, it involves placing the semi-finished shoe into the pressing section of a shoe pressing machine, where it performs the pressing work, tightly bonding the components together. Traditional shoe pressing machines typically use a pre-set mold to position the shoe on the mold before pressing. This method requires custom-made molds for different shoe models, resulting in high production costs and a lack of versatility, making it unsuitable for pressing soles on various shoe shapes.
[0003] Currently, some moldless sole pressing machines exist on the market. These machines utilize the contraction and deformation of an air bladder on the outer side of the shoe, allowing the bladder to tightly enclose the shoe surface and complete the pressing process without a shoe mold. For example, Chinese patent CN 221931431 U discloses a general-purpose vacuum moldless sole pressing machine. Another example is Chinese patent CN 221653745 U, which discloses a vacuum moldless sole pressing machine. Both of these patents use a single air bladder to enclose and press the entire shoe, resulting in relatively uniform pressure across the shoe surface. However, in actual shoe pressing, the pressure on different parts of the shoe is affected by factors such as size and the materials being pressed. The pressing pressure should vary; otherwise, some areas of the shoe will not receive adequate pressure, leading to problems such as glue separation and cracking during later use. Furthermore, during the process of enclosing and pressing the shoe with a single air bladder, the shoe's position is prone to shifting, thus affecting the pressing effect.
[0004] There are also some sole pressing machines, such as the Chinese patent with announcement number CN 218650576 U, which discloses a sole pressing machine for shoe making. Although this patent can compress the sides of the shoe by inflating airbags and can adapt to various shoe shapes, the front and back sides, namely the upper and lower pressing blocks, are prone to incomplete or excessive pressing when pressed by telescopic cylinders, which reduces the pressing effect on the front and back sides of the shoe. At the same time, the bottom and top of the shoe cannot be effectively pressed, further reducing the pressing effect of the shoe.
[0005] Therefore, it is essential to improve the existing bottom pressing machine. Summary of the Invention
[0006] To address the shortcomings of existing technologies, this invention provides a pressing mechanism for a moldless sole pressing machine. By setting up bottom tightening components, front tightening components, rear tightening components, left tightening components, and right tightening components to cooperate with each other, it can adapt to shoe shapes of different sizes and specifications. At the same time, by applying differentiated pressure to different parts of the shoe through segmented and all-round pressing, it can effectively extend the service life of the shoe, avoid problems such as delamination and cracking during use, and has wide applicability, saves energy, and greatly improves the pressing effect of the shoe.
[0007] To achieve the above objectives, the present invention provides the following technical solution: a pressing mechanism for a moldless sole pressing machine, comprising a mechanism body, the mechanism body including a pressing bottom plate connected to the frame of the moldless sole pressing machine, and a matching bottom clamping assembly, a front clamping assembly, a rear clamping assembly, a left clamping assembly, and a right clamping assembly disposed above the pressing bottom plate; the mechanism body further includes a toe pressing assembly located above the bottom clamping assembly; the bottom clamping assembly includes a bottom clamping airbag and a bottom clamping assembly sandwiched between the inner and outer sides of the bottom clamping airbag. The shoe features an inner clamping plate and a bottom outer clamping plate. The front and rear sides of the bottom outer clamping plate are connected to the press-fit bottom plate via press-fit side plates. The front and rear clamping components are respectively equipped with a front clamping frame and a rear clamping frame, and each of the front and rear clamping frames has a matching positive airbag structure connected to one side. The positive airbag structure includes a positive clamping airbag and positive inner and outer clamping plates clamped on the inner and outer sides of the positive clamping airbag. A shoe-limiting arc groove adapted to the front and rear sides of the shoe is provided at one end of the outer side of the positive clamping airbag. The rear clamping frame also has… A heel cuff is fixedly provided, with a heel cuff groove adapted to the rear of the shoe. Both the front and rear tensioning frames have forward tensioning sliders fixed to their lower parts. A forward drive assembly connected to the pressing sole plate is also provided between the front and rear tensioning frames. The left and right tensioning assemblies are symmetrically arranged facing each other, and each includes a lateral support plate and a lateral tensioning frame mounted on the lateral support plate. A lateral airbag structure connected to one side of the lateral tensioning frame is provided, and the lateral airbag structure includes a lateral tensioning... The lateral tightening airbag includes an inner lateral clamp and an outer lateral clamp clamped on both sides of the lateral tightening airbag. A linkage structure adapted to the lateral tightening frame is provided on the other side. A lateral drive assembly adapted to the linkage structure is also provided on the pressing bottom plate. The toe pressing assembly includes a pressing bracket and a pressing guide seat fixed at the lower part of the pressing bracket. A pressing cylinder fixedly connected to the pressing guide seat is provided in the pressing bracket. The piston rod of the pressing cylinder passes through the pressing guide seat. A toe pressing plate and a toe pressing block are fixedly provided at the lower end of the piston rod of the pressing cylinder.
[0008] By adopting the above technical solution, the shoe is placed on the bottom clamping component. Then, the bottom clamping component and the toe pressing component clamp and press the upper and lower sides of the shoe. Next, the front and rear clamping components clamp and press the front and rear sides of the shoe. Finally, the left and right clamping components clamp and press the left and right sides of the shoe, thereby pressing the shoe in all directions. At the same time, different pressing forces are applied to each part, which effectively extends the service life of the shoe and avoids problems such as glue separation and cracking during use. In addition, the segmented pressing method can effectively reduce the amount of air inflation and deflation compared with the existing technology that uses a single airbag for pressing, thereby reducing the energy consumption of the air source.
[0009] The invention is further configured such that: both the front and rear tensioning components are provided with a matching airbag ventilation tube and an airbag photoelectric switch; the airbag photoelectric switch is fixed on the front or rear tensioning frame; the airbag ventilation tube passes through the inner and outer front clamping plates, and a ventilation sealing ring adapted to the inner front clamping plate is embedded in the airbag ventilation tube; the airbag ventilation tube has a hollow cavity structure, and its inner and outer ends are respectively connected to the inner and outer sides of the front tensioning airbag; one inner end of the airbag ventilation tube is connected to the interior of the front tensioning airbag. The device is fitted with an airbag photoelectric movable block fixedly connected to one of its outer ends. The airbag photoelectric movable block is provided with an airbag photoelectric protrusion adapted to the airbag photoelectric switch. The front and rear tensioning components are also provided with a slider photoelectric switch and a slider limiting rod. The slider photoelectric switch and the slider limiting rod are respectively fixed to the forward tensioning slider and the pressing side plate. The slider limiting rod is provided with a slider limiting groove adapted to it, and photoelectric limiting through holes adapted to the slider photoelectric switch are provided on both the front and rear sides of the slider limiting groove sidewall.
[0010] By adopting the above technical solution, the airbag photoelectric switch and the slider photoelectric switch work together to limit the forward and backward movement of the front and rear tensioning components to prevent incomplete or excessive movement, thereby improving the compression effect of the shoe.
[0011] The invention is further configured such that: the lateral support plate has a linkage slot adapted to the linkage structure; the linkage structure includes a linkage rotating block and a first linkage rod and a second linkage rod hinged to both ends of the linkage rotating block; the linkage rotating block is triangular in shape and is also hinged to the lateral support plate via a linkage support block; the first linkage rod is hinged to the lateral tensioning frame via a linkage clamping block; and the two sides of the linkage structure are also provided with adapted lateral guide structures, each including a lateral guide rod and a lateral guide seat fixed to the lateral support plate; one end of the lateral guide rod is fixedly connected to the lateral tensioning frame. The other end passes through the lateral guide seat, and a lateral guide bushing fixedly connected to the lateral guide seat is fitted on the lateral guide rod. A lateral pressure plate adapted to the toe pressing plate and the heel closing plate is also fixed on the lateral tightening frame. An upper limit protrusion is fixed on one end of the lateral pressure plate. The two sides of the toe pressing plate and the heel closing plate are respectively provided with pressure plate steps and closing steps adapted to the upper limit protrusion. The lower part of the lateral tightening frame is also provided with a lower limit protrusion adapted to the bottom outer clamping plate. The left and right sides of the bottom outer clamping plate are provided with lower limit slots adapted to the lower limit protrusion. The upper end of the lateral pressure plate is provided with a foot limiting groove adapted to the toe pressing assembly.
[0012] By adopting the above technical solution, the linkage structure drives the left and right tightening components to press or release the side of the shoe, and the lateral guide structure ensures the stability and reliability of the linkage structure driving the left and right tightening components.
[0013] The invention is further configured such that: the lateral tightening frame is also provided with a lateral closing structure adapted to the side of the shoe; the lateral closing structure includes a lateral closing cylinder and a lateral closing plate adapted to the lateral pressure plate; the lateral closing cylinder is located on one side of the lateral tightening frame and is fixedly connected to each other by a lateral cylinder connecting column; a closing connecting block is fixedly connected to the piston rod of the lateral closing cylinder; the closing connecting block and the lateral closing plate are respectively provided with a matching connecting protrusion and a connecting groove; the closing connecting block and the lateral closing plate are mutually engaged and connected by the connecting protrusion and the connecting groove; the lower part of the closing connecting block is lower than the lateral closing plate; a lateral closing groove adapted to the lateral closing plate is provided on the lateral pressure plate; and a matching lateral relief groove and a shoe rear relief groove are respectively provided on the lateral closing plate and the shoe rear closing plate.
[0014] By adopting the above technical solution, when the lateral closing cylinder drives the lateral closing pressure plate to slide inside the lateral closing groove, the lateral closing pressure plate abuts against the upper side of the shoe, which can prevent the positive or lateral tightening airbag from being exposed to the upper side of the shoe and affecting the pressing effect. Conversely, it loosens the shoe to facilitate loading and unloading.
[0015] The invention is further configured such that: the toe pressing assembly includes a support cylinder and a support guide rail connected to the frame of the moldless sole pressing machine; the piston rod of the support cylinder is connected to the pressing support via a cylinder connector and a support connecting block; the support guide rail is slidably connected to the pressing support via a support slider; the toe pressing assembly also includes a presser foot support fixed to one side of the toe pressing plate; a height-adjustable presser foot connecting rod is inserted on the presser foot support; a shoe last presser foot block is hinged to the lower end of the presser foot connecting rod; the toe pressing plate is fixedly connected to the lower end of the piston rod of the pressing cylinder via a pressing flange; a pressing guide rod is fixedly provided on the toe pressing plate, penetrating the pressing guide seat; a pressing guide bushing connected to the pressing guide seat is sleeved on the pressing guide rod; the toe pressing plate and the toe pressing assembly... The blocks are connected to each other by snap-fit grooves and snap-fit protrusions. The toe pressing plate and the toe pressing block are respectively provided with toe closing grooves and pressing arc parts adapted to the toe of the shoe. The toe closing groove and the heel closing groove are both set as arc grooves. The toe pressing block is also provided with an adjustable toe top block. The presser foot bracket is horizontally connected to the presser foot limiting plate. The lower sides of both ends of the presser foot limiting plate are fixed with presser foot limiting protrusions adapted to the presser foot limiting grooves. The upper sides of both ends of the presser foot limiting plate are connected to the presser foot bracket by presser foot cylinders. The toe pressing block, the toe top block, and the bottom tightening airbag, the front tightening airbag, and the side tightening airbag are all made of rubber material. The bottom tightening airbag, the front tightening airbag, and the side tightening airbag are all hollow cavity structures.
[0016] By adopting the above technical solution, the support cylinder pushes the pressing support to slide left and right along the support guide rail, which facilitates the loading and unloading of shoes. At the same time, the shoe last pressing block is pressed onto the shoe last to ensure the stability of the shoe during the pressing process, thereby improving the pressing effect of the shoe. The shoe toe pressing block and the shoe toe top block cooperate with each other to better adapt to different types of shoe shapes and ensure the pressing effect of the shoe. In addition, the pressing cylinder drives the pressing foot limiting protrusions at both ends of the pressing foot limiting plate to insert into the pressing foot limiting groove, so that the two sides are limited to the position of the tightening frame, avoiding the structural looseness in the left and right directions from affecting the pressing effect of the shoe.
[0017] The present invention is further configured such that: the number of the forward drive components is set to two sets, and each set includes a forward drive motor and a forward tightening screw adapted to the forward drive motor. A driving wheel and a driven wheel are respectively sleeved on the rotating shaft of the forward tightening motor and the forward tightening screw, and the driving wheel and the driven wheel are connected to each other by a synchronous belt. The forward tightening motor is fixedly connected to the lower part of the pressing base plate by a motor fixing seat. The forward tightening screws of both forward drive components pass through the forward tightening slider, and a forward slider nut is provided at the connection between the forward tightening slider and the forward tightening screw. A slider guide rod is also fixedly connected to the forward tightening slider. The slider guide rod passes through the pressing side plate and a slider guide bushing is provided at the connection. A screw bearing structure connected to the pressing side plate is also sleeved on the forward tightening screw.
[0018] By adopting the above technical solution, two forward tightening motors drive the forward tightening screws to rotate, which in turn drive the forward tightening sliders on both sides to slide independently. The front and rear tightening components can complete the pressing or releasing action on the front and rear sides without moving the shoe position. Although the front and rear distances of the shoe placed in the shoe placement area are different, the independent forward tightening motors, together with the airbag photoelectric switch and the slider photoelectric switch, ensure that the force is stable and balanced when the shoe is pressed in front and back, thereby improving the pressing effect of the shoe.
[0019] The present invention is further configured such that: the forward drive assembly includes a forward drive motor and a forward tightening screw adapted to the forward drive motor; a driving wheel and a driven wheel are respectively sleeved on the rotating shaft of the forward tightening motor and the forward tightening screw, and the driving wheel and the driven wheel are connected to each other by a synchronous belt; the forward tightening motor is fixedly connected to the lower part of the pressing base plate by a motor fixing seat; the two ends of the forward tightening screw pass through the forward tightening sliders on the front tightening frame and the rear tightening frame, and the two ends of the forward tightening screw are respectively provided with external threads of equal pitch and opposite direction, forming a bidirectional screw; the forward tightening slider is provided with a forward slider nut adapted to the external thread; a slider guide rod is fixedly connected to each of the forward tightening sliders; the slider guide rod passes through the pressing side plate and a slider guide bushing is provided at the connection point; the forward tightening screw is also sleeved with a screw bearing structure connected to the pressing side plate.
[0020] By adopting the above technical solution, the forward tightening motor drives the forward tightening screw to rotate, which in turn drives the forward tightening sliders on both sides to slide, thereby driving the front tightening component and the rear tightening component to simultaneously press or release the front and rear sides of the shoe. Furthermore, using a single forward tightening motor can save production costs.
[0021] The present invention is further configured such that: the lateral drive assembly includes a lateral clamping cylinder and a lateral linear guide rail fixedly mounted on the pressing base plate; a lateral guide rail slider is provided on the lateral linear guide rail and slidably connected thereto; a linkage cylinder block is provided on the lateral guide rail slider and hingedly connected to the end of the second linkage rod; the lateral guide rail slider and the linkage cylinder block are fixedly connected to each other by bolts; two lateral clamping cylinders are provided; the lateral clamping cylinders are fixedly connected to each other by a lateral cylinder mounting plate and a lateral support plate; and the piston rod of the lateral clamping cylinder is fixedly connected to the linkage cylinder block.
[0022] By adopting the above technical solution, the lateral tightening cylinder drives the linkage cylinder block to slide through the piston rod, and then drives the lateral airbag structure to press or release the side of the shoe through the linkage structure. The arrangement of the two lateral tightening cylinders is to adapt to the difference in distance between the left and right sides of the shoe and the lateral pressing airbag, thereby further improving the pressing effect.
[0023] The invention is further configured such that: the pressing base plate is also provided with a lateral drive assembly adapted to the linkage structure. The lateral drive assembly includes a lateral clamping cylinder and a lateral linear guide rail fixed to the pressing base plate. A lateral guide rail slider is provided on the lateral linear guide rail and is slidably connected thereto. A linkage cylinder block is provided on the lateral guide rail slider and is hingedly connected to the end of the second linkage rod. The lateral guide rail slider and the linkage cylinder block are fixedly connected to each other by bolts. There is one lateral clamping cylinder. The lateral clamping cylinder is fixedly connected to the lateral support plate by a lateral cylinder mounting plate. A lateral cylinder connecting block is fixedly connected to the piston rod of the lateral clamping cylinder. Both ends of the lateral cylinder connecting block are hingedly connected to the lateral cylinder connecting rod. The end of the lateral cylinder connecting rod is also hingedly connected to the lateral slider guide rod. The lateral slider guide rod is fixedly connected to the linkage cylinder block. The lateral slider guide rod is connected to the pressing base plate by a lateral guide rod bushing and a lateral guide rod seat.
[0024] By adopting the above technical solution, the lateral tightening cylinder drives the linkage cylinder block to slide through the lateral cylinder connecting rod and the lateral slider guide rod. Then, the two sides simultaneously drive the lateral airbag structure to press or release the side of the shoe through the linkage structure. Furthermore, the use of a single lateral tightening cylinder further reduces production costs.
[0025] The present invention is further configured such that: the heel closing plate is also provided with a heel closing structure, the heel closing structure includes a heel closing slider and a heel closing cylinder fixed on the heel closing plate, the heel closing plate is provided with a heel limiting groove and a heel cylinder slot adapted to the heel closing slider, the heel closing slider slides back and forth in the heel limiting groove, and the piston rod of the heel closing cylinder is connected to the heel closing slider through a heel connecting block.
[0026] By adopting the above technical solution, the sealing effect of the back of the shoe is improved by adding a shoe sealing slider and a shoe sealing cylinder to the shoe sealing plate, thereby further increasing the sealing effect of the shoe.
[0027] In summary, the present invention has the following beneficial effects:
[0028] 1. By placing the shoe on the bottom clamping component, the bottom clamping component and the toe pressing component clamp and press the upper and lower sides of the shoe. Then, the front and rear clamping components clamp and press the front and rear sides of the shoe. Finally, the left and right clamping components clamp and press the left and right sides of the shoe. This process provides comprehensive pressing of the shoe and applies differentiated pressing forces to different parts, effectively extending the shoe's lifespan and preventing issues such as glue separation and cracking during use. In addition, the segmented pressing method effectively reduces the amount of air inflation and deflation compared to the existing technology that uses a single airbag for pressing, thereby reducing the energy consumption of the air source.
[0029] 2. By coordinating the airbag photoelectric switch and the slider photoelectric switch, the front and rear tightening components are limited during forward and backward movement to prevent incomplete or excessive movement, thereby improving the shoe's pressing effect. When the lateral tightening cylinder drives the lateral tightening pressure plate to slide inside the lateral tightening groove, the lateral tightening pressure plate abuts against the upper side of the shoe, preventing the front or lateral tightening airbags from inflating and protruding to the upper side of the shoe, thus avoiding affecting the pressing effect. Conversely, it loosens the shoe to facilitate loading and unloading. The structural limiting and locking in the up-down and left-right directions effectively applies pressure to the shoe from all directions, improving the shoe's pressing effect. Attached Figure Description
[0030] Figure 1 This is a perspective view of Embodiment 1 of the present invention.
[0031] Figure 2 This is a front view of Embodiment 1 of the present invention.
[0032] Figure 3 for Figure 2 A magnified view of a portion of point I in the middle.
[0033] Figure 4 for Figure 2 A partial schematic diagram of the photoelectric switch at the middle slider.
[0034] Figure 5 for Figure 2 A cross-sectional view at point AA.
[0035] Figure 6 for Figure 5 A magnified view of a portion of point II in the middle.
[0036] Figure 7 This is a right view of Embodiment 1 of the present invention.
[0037] Figure 8 for Figure 7 A cross-sectional view of section BB.
[0038] Figure 9 for Figure 8 A magnified view of a portion of point III.
[0039] Figure 10 for Figure 6 A cross-sectional view at point CC.
[0040] Figure 11 for Figure 10 A partial schematic diagram of the lateral closing structure.
[0041] Figure 12 for Figure 11 A schematic diagram of the connection between the mid-side seam panel and the rear seam panel.
[0042] Figure 13 for Figure 6 A cross-sectional view at point DD.
[0043] Figure 14 This is a schematic diagram of the structure of Embodiment 2 of the present invention.
[0044] Figure 15 This is a schematic diagram of the structure of Embodiment 3 of the present invention.
[0045] Figure 16 This is a schematic diagram of the structure of Embodiment 4 of the present invention.
[0046] Reference numerals: 1. Pressed bottom plate; 11. Pressed side plate; 2. Bottom clamping assembly; 21. Bottom clamping airbag; 22. Bottom inner clamping plate; 221. Bottom airbag through hole; 23. Bottom outer clamping plate; 231. Lower limit slot; 3. Front clamping assembly; 31. Front clamping frame; 311. Positive clamping slider; 3111. Positive slider nut; 3112. Slider guide rod; 3113. Slider guide bushing; 3114. Screw bearing structure; 3115. Slider photoelectric switch; 3116. Slider limit rod; 3117. Slider limit groove; 3118. Photoelectric limit through hole; 32. Positive airbag structure; 321. Positive clamping airbag; 3211. Shoe limit arc groove; 322. Positive inner clamping plate; 323. Positive 324. Outward clamping plate; 325. Airbag ventilation tube; 326. Airbag photoelectric switch; 327. Airbag photoelectric movable block; 3261. Airbag photoelectric protrusion; 33. Forward drive assembly; 331. Forward drive motor; 3311. Drive wheel; 3312. Synchronous belt; 3313. Motor mounting base; 332. Forward tightening screw; 3321. Driven wheel; 4. Rear tightening assembly; 41. Rear tightening frame; 42. Heel closing plate; 421. Heel closing groove; 422. Closing step; 423. Heel retraction groove; 424. Heel limiting slide groove; 425. Heel cylinder slot; 43. Heel closing slider; 44. Heel closing cylinder; 426. Heel connecting block; 5. Left side tightening assembly; 51. Lateral support plate; 511. 52. Linkage slot; 521. Lateral tensioning frame; 522. Lateral airbag through hole; 523. Lateral pressure plate; 5221. Upper limit protrusion; 5222. Pressure foot limiting groove; 524. Lower limit protrusion; 53. Lateral airbag structure; 535. Lateral tensioning airbag; 536. Lateral inner clamping plate; 537. Lateral outer clamping plate; 54. Linkage structure; 548. Linkage rotating block; 549. First linkage rod; 540. Second linkage rod; 541. Linkage support block; 542. Linkage tensioning block; 55. Lateral guide structure; 551. Lateral guide rod; 5511. Lateral guide bushing; 552. Lateral guide seat; 56. Lateral drive assembly; 561. Lateral tensioning cylinder; 562. Lateral linear guide rail; 563. Lateral guide rail slider 564. Linkage cylinder block; 565. Side cylinder mounting plate; 566. Side cylinder connecting block; 567. Side cylinder connecting rod; 568. Side slider guide rod; 5681. Side guide rod bushing; 5682. Side guide rod seat; 57. Side closing structure; 571. Side closing cylinder; 5711. Side cylinder connecting column; 5712. Closing connecting block; 5713. Connecting protrusion; 572. Side closing plate; 5721. Connecting slot; 5722. Side relief slot; 6. Right side tightening assembly; 7. Toe pressing assembly; 71. Pressing bracket; 711. Pressing guide seat; 712. Pressing guide bushing; 72. Pressing cylinder; 73. Toe pressing plate; 731. Pressing guide rod; 732. Snap-fit groove;733. Toe crimping groove; 734. Pressure plate step; 74. Toe pressing block; 741. Snap-fit protrusion; 742. Pressing arc section; 743. Toe top block; 75. Bracket cylinder; 751. Cylinder connector; 752. Bracket connecting block; 753. Bracket guide rail; 754. Bracket slider; 76. Presser foot bracket; 761. Presser foot adjustment groove; 762. Presser foot connecting rod; 763. Shoe last presser foot block; 764. Presser foot limiting plate; 7641. Presser foot limiting protrusion; 765. Presser foot cylinder. Detailed Implementation
[0047] The present invention will be further described in detail below with reference to the accompanying drawings.
[0048] Example 1: This example discloses a pressing mechanism for a moldless bottom pressing machine, such as... Figures 1 to 13 As shown, the device includes a main body, which includes a pressing base plate 1 connected to the frame of the moldless pressing machine. A matching bottom clamping assembly 2, front clamping assembly 3, rear clamping assembly 4, left clamping assembly 5, and right clamping assembly 6 are arranged above the pressing base plate 1. A shoe placement area for placing shoes to be pressed is formed between the bottom clamping assembly 2, front clamping assembly 3, rear clamping assembly 4, left clamping assembly 5, and right clamping assembly 6. The main body also includes a toe pressing assembly 7 located above the bottom clamping assembly 2. The pressing of the shoes is completed by placing them in the shoe placement area and having them mutually locked and limited by the bottom clamping assembly 2, front clamping assembly 3, rear clamping assembly 4, left clamping assembly 5, right clamping assembly 6, and toe pressing assembly 7.
[0049] The bottom tightening assembly 2 includes a bottom tightening airbag 21 and a bottom inner clamping plate 22 and a bottom outer clamping plate 23 clamped on the inner and outer sides of the bottom tightening airbag 21. The bottom outer clamping plate 23 has a bottom airbag groove adapted to the bottom tightening airbag 21. The bottom inner clamping plate 22 and the bottom outer clamping plate 23 are fixedly connected to each other by bolts. The bottom tightening airbag 21 has a hollow cavity structure. The bottom inner clamping plate 22 and the bottom outer clamping plate 23 have bottom airbag through holes 221 that communicate with the inside of the bottom tightening airbag 21. The front and rear sides of the bottom outer clamping plate 23 are connected to the pressing bottom plate 1 by pressing side plates 11. Air is inflated and pressurized into the bottom tightening airbag 21 through the bottom airbag through holes 221, thereby causing the bottom tightening airbag 21 to expand and press the bottom of the shoe, so that the shoe can be pressurized from all directions and improve the shoe pressing effect.
[0050] The front tensioning assembly 3 and the rear tensioning assembly 4 are respectively provided with a front tensioning frame 31 and a rear tensioning frame 41, and each of the front tensioning frame 31 and the rear tensioning frame 41 is connected to a matching positive airbag structure 32. The positive airbag structure 32 includes a positive tensioning airbag 321 and a positive inner clamping plate 322 and a positive outer clamping plate 323 clamped on the inner and outer sides of the positive tensioning airbag 321. The positive inner clamping plate 322 and the positive outer clamping plate 323 are fixedly connected to each other by bolts. The positive outer clamping plate 323 has a positive airbag groove that matches the positive tensioning airbag 321. The positive tensioning airbag 321 has a hollow cavity structure inside, and a shoe limiting arc groove 3211 that matches the front and rear sides of the shoe is opened at one end of the positive tensioning airbag 321. The positive tensioning airbag 321 expands by inflating and pressurizing it. This completes the pressing of the front and back sides of the shoe, so that the shoe can be pressed from all directions, improving the pressing effect. The lower part of the front tensioning frame 31 and the rear tensioning frame 41 are both fixedly connected to the positive tensioning slider 311. A positive drive component 33 connected to the pressing base plate 1 is also provided between the front tensioning frame 31 and the rear tensioning frame 41. The positive drive component 33 drives the front tensioning frame 31 and the rear tensioning frame 41 to move through the positive tensioning slider 311, thereby driving the positive airbag structure 32 to press and release the front and back sides of the shoe. The rear tensioning frame 41 is also provided with a shoe rear closing plate 42 fixedly connected to it. The shoe rear closing plate 42 has a shoe rear closing groove 421 adapted to the rear of the shoe. The shoe rear closing plate 42 and the shoe rear closing groove 421 facilitate the rear tensioning component 4 to better fit the rear of the shoe during pressing, improving the pressing effect.
[0051] The forward airbag structure 32 also includes an airbag ventilation tube 324 and an airbag photoelectric switch 325 fixedly connected to the forward clamping frame. The airbag ventilation tube 324 passes through the forward inner clamping plate 322 and the forward outer clamping plate 323, and a ventilation sealing ring adapted to the forward inner clamping plate 322 is embedded on the airbag ventilation tube 324. The airbag ventilation tube 324 is a hollow cavity structure with its inner and outer ends connected to the inner and outer sides of the forward clamping airbag 321, respectively. Air is inflated and pressurized into the forward clamping airbag 321 through the airbag ventilation tube 324, thereby causing the forward clamping airbag 321 to expand and complete the pressing process of the front and back sides of the shoe. In operation, one end of the airbag ventilation tube 324 abuts against the inside of the positive tightening airbag 321, and the other end of the airbag is fitted with an airbag photoelectric movable block 326 fixedly connected to it. The airbag photoelectric movable block 326 is provided with an airbag photoelectric protrusion 3261 adapted to the airbag photoelectric switch 325. When the positive tightening airbag 321 approaches and abuts against the front and rear sides of the shoe, the positive tightening airbag 321 moves into place, driving the airbag ventilation tube 324 to move. Thus, the airbag photoelectric switch 325 detects the action of the photoelectric detection protrusion on the photoelectric movable block, and stops the forward and backward movement of the positive tightening airbag 321 and inflates and pressurizes it.
[0052] The number of forward drive components 33 is set to two, and each includes a forward drive motor 331 and a forward tightening screw 332 adapted to the forward drive motor 331. A driving wheel 3311 and a driven wheel 3321 are respectively fitted onto the rotating shaft of the forward tightening motor and the forward tightening screw 332. The driving wheel 3311 and the driven wheel 3321 are connected to each other by a synchronous belt 3312. The forward tightening motor is fixedly connected to the lower part of the pressing base plate 1 by a motor mounting base 3313. The two forward drive components... All forward tightening screws 332 of component 33 pass through forward tightening sliders 311, and a forward slider nut 3111 is provided at the connection between the forward tightening slider 311 and the forward tightening screw 332. A slider guide rod 3112 is also fixedly connected to the forward tightening slider 311. The slider guide rod 3112 passes through the pressing side plate 11, and a slider guide bushing 3113 is provided at the connection. A screw bearing structure 3114 connected to the pressing side plate 11 is also sleeved on the forward tightening screw 332. The two forward tightening motors each The self-driven forward tightening screw 332 rotates, which in turn independently drives the forward tightening sliders 311 on both sides to move back and forth. This allows for pressing or releasing actions on both sides via the front and rear tightening components without moving the shoes. Furthermore, because the distance between the front and rear of the shoes placed in the shoe storage area varies, the independent forward tightening motor, in conjunction with a photoelectric switch, ensures stable and balanced force during the front and rear pressing of the shoes, improving the pressing effect. One side of the forward tightening slider 311 is also equipped with a component connected to the forward tightening motor. The slider photoelectric switch 3115 and slider limiting rod 3116 are adapted. The end of the slider limiting rod 3116 is fixedly inserted through the pressing side plate 11 and has a slider limiting groove 3117 adapted to it. The front and rear sides of the side wall of the slider limiting groove 3117 are provided with photoelectric limiting through holes 3118 adapted to the slider photoelectric switch 3115. The slider photoelectric switch 3115 and the photoelectric limiting through holes 3118 cooperate with each other to limit the movement of the forward clamping slider 311 and prevent it from over-positioning.
[0053] The left-side tensioning assembly 5 and the right-side tensioning assembly 6 are arranged symmetrically facing each other, and both include a lateral support plate 51 and a lateral tensioning frame 52 disposed on the lateral support plate 51. A lateral airbag structure 53 connected to one side of the lateral tensioning frame 52 is provided therewith. The lateral airbag structure 53 includes a lateral tensioning airbag 531 and an inner lateral clamping plate 532 and an outer lateral clamping plate 533 clamped on the inner and outer sides of the lateral tensioning airbag 531. The outer lateral clamping plate 533 has a lateral airbag groove adapted to the lateral tensioning airbag 531. The inner lateral clamping plate 532... The 32 and the lateral outer clamp 533 are fixedly connected to each other by bolts. The lateral tightening airbag 531 has a hollow cavity structure. The lateral inner clamp 532, the lateral outer clamp 533 and the lateral tightening frame 52 are provided with lateral airbag through holes 521 that communicate with the inside of the lateral tightening airbag 531. The lateral tightening airbag 531 is inflated and pressurized through the lateral airbag through holes 521, thereby causing the lateral tightening airbag 531 to expand and complete the pressing work on the side of the shoe, so that the shoe can be pressurized from all directions and improve the pressing effect of the shoe.
[0054] A matching linkage structure 54 is provided on the other side of the lateral tensioning frame 52. A linkage slot 511 matching the linkage structure 54 is provided on the lateral support plate 51. The linkage structure 54 includes a linkage rotating block 541 and a first linkage rod 542 and a second linkage rod 543 respectively hinged to both ends of the linkage rotating block 541. The linkage rotating block 541 is triangular in shape and is also hinged to the lateral support plate 51 via a linkage support block 544. The first linkage rod 542 is hinged to the lateral tensioning frame 52 via a linkage tensioning block 545. The linkage structure 54 drives the left side tensioning frame... The tightening component 5 and the right tightening component 6 press or release the side of the shoe. The two sides of the linkage structure 54 are also provided with lateral guide structures 55 adapted to it. The lateral guide structure 55 includes a lateral guide rod 551 and a lateral guide seat 552 fixedly connected to the lateral support plate 51. One end of the lateral guide rod 551 is fixedly connected to the lateral tightening frame 52, and the other end passes through the lateral guide seat 552. A lateral guide bushing 5511 fixedly connected to the lateral guide seat 552 is sleeved on the lateral guide rod 551. The lateral guide structure 55 ensures the reliability of the linkage structure 54 in driving the left tightening component 5 and the right tightening component 6.
[0055] The pressing base plate 1 is also provided with a lateral drive assembly 56 adapted to the linkage structure 54. The lateral drive assembly 56 includes a lateral tightening cylinder 561 fixed on the pressing base plate 1 and a lateral linear guide rail 562. The lateral linear guide rail 562 is provided with a lateral guide rail slider 563 slidably connected thereto. The lateral guide rail slider 563 is provided with a linkage cylinder block 564 hinged to the end of the second linkage rod 543. The lateral guide rail slider 563 and the linkage cylinder block 564 are fixedly connected to each other by bolts. There are two lateral tightening cylinders 561. The lateral tightening cylinders 561 are fixedly connected to the lateral support plate 51 by a lateral cylinder mounting plate 565. The piston rod of the lateral tightening cylinder 561 is fixedly connected to the linkage cylinder block 564. The lateral tightening cylinder 561 drives the linkage cylinder block 564 to slide through the piston rod, thereby driving the lateral airbag structure 53 to press or release the side of the shoe through the linkage structure 54.
[0056] The toe-pressing assembly 7 includes a pressing bracket 71 and a pressing guide seat 711 fixedly connected to the lower part of the pressing bracket 71. The pressing bracket 71 is arranged in a U-shape. A pressing cylinder 72 fixedly connected to the pressing guide seat 711 is arranged inside the pressing bracket 71. The piston rod of the pressing cylinder 72 passes through the pressing guide seat 711, and a toe-pressing plate 73 adapted to it is provided at the lower end of the piston rod. The toe-pressing plate 73 is fixedly connected to the lower end of the piston rod of the pressing cylinder 72 by a pressing flange. A pressing guide rod 731, penetrating a pressing guide seat 711, is fixedly mounted on the toe pressing plate 73. A pressing guide sleeve 712, connected to the pressing guide seat 711, is sleeved on the pressing guide rod 731. A toe pressing block 74, adapted to the toe pressing plate 73, is also provided at the lower end of the toe pressing plate 73. The toe pressing plate 73 and the toe pressing block 74 are mutually engaged by respectively providing a snap-fit groove 732 and a snap-fit protrusion 741. The toe pressing plate 73 and the toe pressing block 74 are respectively provided with features corresponding to the toe of the shoe. The shoe toe closing groove 733 and the pressing arc-shaped part 742 are adapted to press or release the shoe toe by the shoe toe pressing block 74 driven by the pressing cylinder 72, ensuring the shoe pressing effect. The shoe toe closing groove 733 and the shoe rear closing groove 421 are both set as arc-shaped grooves. The shoe toe pressing block 74 is also provided with an adjustable shoe toe top block 743. The shoe toe top block 743 is threadedly connected to the shoe toe pressing block 74 by a fixed top block screw. The shoe toe pressing block 74 is provided with a top block connecting screw hole adapted to the top block screw. The toe pressing block 74 and the toe top block 743 work together to better adapt to different types of shoe shapes and ensure the pressing effect of the shoe. The toe pressing block 74, the toe top block 743, the bottom tightening airbag 21, the front tightening airbag 321, and the side tightening airbag 531 are all made of rubber. The rubber material can ensure that the shoe surface will not be damaged during pressing. At the same time, its elasticity allows the front tightening airbag 321 and the side tightening airbag 531 to expand and contract to improve the pressing effect of the shoe.
[0057] The upper side of the pressing bracket 71 is also provided with a bracket cylinder 75 that is connected to the frame of the moldless pressing machine. The piston rod of the bracket cylinder 75 is fixedly connected to the pressing bracket 71 through a cylinder connector 751 and a bracket connecting block 752. The bracket connecting block 752 is also provided with a bracket guide rail 753 that is adapted to it. The bracket guide rail 753 is also fixedly connected to the frame of the moldless pressing machine. The bracket guide rail 753 is also slidably connected with a bracket slider 754 that is adapted to it. The bracket guide rail 753 is slidably connected to the pressing bracket 71 through the bracket slider 754. The bracket cylinder 75 pushes the pressing bracket 71 to slide left and right along the bracket guide rail 753 to facilitate the orderly loading and unloading of shoes.
[0058] A presser foot bracket 76 is fixedly connected to one side of the toe presser plate 73. The presser foot bracket 76 is in the shape of an inverted L, and its two sides are fixedly connected to the toe presser plate 73 by presser foot side plates. A height-adjustable presser foot connecting rod 762 is inserted through the presser foot bracket 76. A shoe last presser foot block 763 is hinged to the lower end of the presser foot connecting rod 762. The presser foot connecting rod 762 includes a presser foot adjustment sleeve that passes through the presser foot bracket 76. The presser foot adjustment sleeve has an adjustment sleeve protrusion, and the upper end of the presser foot adjustment sleeve is fitted with a... The adjusting sleeve nut with threaded connection is used to engage the adjusting sleeve with the adjusting sleeve protrusion and the adjusting sleeve nut in the adjusting sleeve groove 761. The adjusting sleeve with the adjusting sleeve is also provided with a pressing foot screw that slides up and down. The lower end of the pressing foot screw is fitted with a trapezoidal nut that is threadedly connected to it. The trapezoidal nut and the adjusting sleeve with the adjusting sleeve are respectively provided with a nut connecting groove and an adjusting sleeve protrusion. The lower end of the pressing foot screw is provided with a hinged connection with the shoe last pressing foot block 763. The shoe last pressing foot block 763 is pressed onto the shoe last to ensure the stability of the shoe during the pressing process, thereby improving the pressing effect of the shoe.
[0059] The lateral tightening frame 52 is also fixedly connected to a lateral pressure plate 522 that is compatible with the toe pressing plate 73 and the heel closing plate 42. The lateral pressure plate 522 has an integrated upper limit protrusion 5221 at one inward end. The toe pressing plate 73 and the heel closing plate 42 have pressure plate steps 734 and closing steps 422 on their sides, respectively, that are compatible with the upper limit protrusion 5221. The lower part of the lateral tightening frame 52 also has a lower limit protrusion 523 that is compatible with the bottom outer clamping plate 23. The left and right sides of the bottom outer clamping plate 23 have lower limit slots 231 that are compatible with the lower limit protrusion 523. The upper limit protrusion 5221 engages with the pressure plate steps 734 and closing steps 422, and the lower limit protrusion 523 engages with the lower limit slots 231 to limit the vertical movement, preventing structural loosening in the vertical direction. To improve the shoe's pressing effect, the upper end of the side pressure plate 522 is provided with a foot limiting groove 5222 that matches the foot support 76. A foot limiting plate 764 is horizontally inserted through the foot support 76 and is movably connected to it. The lower sides of both ends of the foot limiting plate 764 are fixed with foot limiting protrusions 7641 that match the foot limiting groove 5222. The upper sides of both ends of the foot limiting plate 764 are connected to the foot support 76 through a foot cylinder 765. The foot cylinder 765 drives the foot limiting protrusions 7641 at both ends of the foot limiting plate 764 to insert into the foot limiting groove 5222, so that the two sides are limited to the position of the tightening frame 52. This prevents the structure in the left and right directions from being loose and affecting the shoe's pressing effect. By limiting and locking the structure in the up and down and left and right directions, the shoe is effectively pressed in all directions, improving the shoe's pressing effect.
[0060] The lateral tightening frame 52 is also provided with a lateral closing structure 57 adapted to the side of the shoe. The lateral closing structure 57 includes a lateral closing cylinder 571 and a lateral closing plate 572 adapted to the lateral pressure plate 522. The lateral closing cylinder 571 is located on one side of the lateral tightening frame 52 and is fixedly connected to each other by a lateral cylinder connecting post 5711. A closing connecting block 5712 is fixedly connected to the piston rod of the lateral closing cylinder 571. The closing connecting block 5712 and the lateral closing plate 572 are respectively provided with a matching connecting protrusion 5713 and a connecting groove 5721. The closing connecting block 5712 and the lateral closing plate 572 are engaged and connected to each other by the connecting protrusion 5713 and the connecting groove 5721. The lower part of the closing connecting block 5712 is lower than the lateral closing plate 572, so that the closing connecting block 5712 and the lateral tightening frame are properly connected. The sliding distance of the side closing plate 572 is 522. The side pressure plate 522 is provided with a side closing groove that matches the side closing plate 572. When the side closing cylinder 571 drives the side closing pressure plate to slide inside the side closing groove, the side closing pressure plate abuts against the upper side of the shoe. This can prevent the positive tightening airbag 321 or the side tightening airbag 531 from inflating and protruding to the upper side of the shoe, affecting the pressing effect. Conversely, it loosens the shoe to facilitate loading and unloading. The side closing plate 572 and the rear closing plate 42 are also provided with matching side relief grooves 5722 and rear relief grooves 423, respectively. The side relief grooves 5722 and rear relief grooves 423 prevent positional conflicts when the side closing plate 572 and the rear closing plate 42 close the shoe, thereby better closing the upper part of the shoe and improving the pressing effect of the shoe.
[0061] The working process is as follows: The shoes are placed in the shoe storage area, and simultaneously, the toe-pressing component 7 presses against the top of the shoes. Then, the forward drive motor 331 drives the front and rear clamping components 3 and 4 to press against the front and rear sides of the shoes. When the forward clamping airbag 321 comes into contact with the front and rear sides of the shoes, it triggers the airbag photoelectric switch 325, causing the forward drive motor 331 to stop moving. That is, the front and rear clamping components 3 and 4 stop moving. Then, the left and right clamping components 5 and 6 drive the linkage structure 5 via the lateral clamping cylinder 561. 4. The action pushes the left clamping component 5 and the right clamping component 6 to clamp the sides of the shoe. After the left and right sides are clamped in place, the lateral closing structure 57 clamps and closes the upper part of the shoe. At the same time, the foot presser cylinder 765 drives the foot presser limit plate 764 to lock the lateral clamping frames 52 on the left and right sides. Finally, air is inflated into the bottom clamping airbag 21, the forward clamping airbag 321 and the lateral clamping airbag 531 to complete the compression of the shoe. Because it is a segmented compression method, the pressure on different parts of the shoe is different, thereby improving the compression effect of the shoe. Conversely, the shoe is loaded and unloaded.
[0062] Example 2: The difference between this example and Example 1 is that, as shown in Example 2... Figure 14 As shown, the forward drive assembly 33 includes a forward drive motor 331 and a forward tightening screw 332 adapted to the forward drive motor 331. A driving wheel 3311 and a driven wheel 3321 are respectively mounted on the rotating shaft of the forward tightening motor and the forward tightening screw 332. The driving wheel 3311 and the driven wheel 3321 are connected to each other by a synchronous belt 3312. The forward tightening motor is fixedly connected to the lower part of the pressing base plate 1 by a motor mounting base 3313. The two ends of the forward tightening screw 332... A forward tightening slider 311 passes through the front tightening frame 31 and the rear tightening frame 41 respectively, and both ends of the forward tightening screw 332 are respectively provided with external threads of equal pitch and opposite direction, forming a bidirectional screw. The forward tightening screw 332 is provided with a forward slider nut 3111 adapted to the external thread on the forward tightening slider 311. A slider guide rod 3112 is fixedly connected to each forward tightening slider 311. The slider guide rod 3112 passes through the pressing side plate 11 and is provided with a slider guide bushing at the connection. 3113, the forward tightening screw 332 is also fitted with a screw bearing structure 3114 connected to the pressing side plate 11. The forward tightening slider 311 is also provided with a slider photoelectric switch 3115 and a slider limiting rod 3116 adapted to the forward tightening motor on one side. The end of the slider limiting rod 3116 is fixedly inserted through the pressing side plate 11 and has a slider limiting groove 3117 adapted to it. The front and rear sides of the slider limiting groove 3117 are both provided with photoelectric switches adapted to the slider photoelectric switch 3115. The electric limiting through hole 3118, through the cooperation of the slider photoelectric switch 3115 and the photoelectric limiting through hole 3118, limits the movement of the forward tightening slider 311 to prevent it from over-moving. The forward tightening motor drives the forward tightening screw 332 to rotate, which in turn drives the forward tightening sliders 311 on both sides to slide, thereby driving the front tightening assembly and the rear tightening assembly to simultaneously perform pressing or releasing actions on the front and rear sides of the shoe. Compared with the method of using two forward tightening motors to drive in Embodiment 1, it saves production costs.
[0063] Example 3: The difference between this example and Example 1 is that, as shown in Example 3... Figure 15As shown, the pressing base plate 1 is also equipped with a lateral drive assembly 56 adapted to the linkage structure 54. The lateral drive assembly 56 includes a lateral clamping cylinder 561 fixed on the pressing base plate 1 and a lateral linear guide rail 562. A lateral guide rail slider 563 is provided on the lateral linear guide rail 562 and slidably connected thereto. A linkage cylinder block 564 is provided on the lateral guide rail slider 563 and hinged to the end of the second linkage rod 543. The lateral guide rail slider 563 and the linkage cylinder block 564 are fixedly connected to each other by bolts. There is one lateral clamping cylinder 561. The lateral clamping cylinder 561 is fixedly connected to the lateral support plate 51 by a lateral cylinder mounting plate 565. A lateral cylinder connecting rod is provided on the piston rod of the lateral clamping cylinder 561 and fixedly connected thereto. The connecting block 566 has two ends with lateral cylinder connecting rods 567 that are hinged to it. The end of the lateral cylinder connecting rod 567 is also provided with a lateral slider guide rod 568 that is hinged to it. The lateral slider guide rod 568 is fixedly connected to the linkage cylinder block 564. The lateral slider guide rod 568 is connected to the pressing base plate 1 by sleeved lateral guide rod bushing 5681 and lateral guide rod seat 5682. The lateral tightening cylinder 561 drives the linkage cylinder block 564 to slide through the lateral cylinder connecting rod 567 and the lateral slider guide rod 568. Then, the lateral airbag structure 53 is driven by the linkage structure 54 to press or release the side of the shoe at the same time on both sides. Compared with the method of using two lateral tightening cylinders 561 to drive in Embodiment 1, it saves production costs.
[0064] Example 4: This example is based on any one of Examples 1 to 3, such as... Figure 16 As shown, the heel closing plate 42 is also provided with a heel closing structure, which includes a heel closing slider 43 and a heel closing cylinder 44 fixed on the heel closing plate 42. The heel closing plate 42 is provided with a heel limiting groove 424 and a heel cylinder slot 425 that are adapted to the heel closing slider 43. The heel closing slider 43 slides back and forth in the heel limiting groove 424. The piston rod of the heel closing cylinder 44 is connected to the heel closing slider 43 through the heel connecting block 426. By adding the heel closing slider 43 and the heel closing cylinder 44 to the heel closing plate 42, the closing effect of the heel of the shoe is improved, and the pressing effect of the shoe is further improved.
[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of the present invention should be included within the protection scope of the present invention.
Claims
1. A pressing mechanism for a moldless bottom pressing machine, comprising a mechanism body, characterized in that: The mechanism body includes a pressing base plate connected to the frame of the moldless pressing machine. A matching bottom clamping assembly, front clamping assembly, rear clamping assembly, left clamping assembly, and right clamping assembly are disposed above the pressing base plate. The mechanism body also includes a toe pressing assembly located above the bottom clamping assembly. The bottom clamping assembly includes a bottom clamping airbag and an inner bottom clamping plate and an outer bottom clamping plate clamped on the inner and outer sides of the bottom clamping airbag. The front and rear sides of the outer bottom clamping plate are connected to the pressing base plate via pressing side plates. The front and rear clamping assemblies are respectively provided with a front clamping frame and a rear clamping frame, and each of the front and rear clamping frames is connected to a matching positive airbag structure on one side. The forward airbag structure includes a forward tightening airbag and forward inner and outer clamping plates sandwiched on the inner and outer sides of the forward tightening airbag. One end of the forward tightening airbag has a shoe-limiting arc groove adapted to the front and rear sides of the shoe. A rear shoe closing plate is fixed on the rear tightening frame, and a rear shoe closing groove adapted to the rear of the shoe is formed on the rear shoe closing plate. Forward tightening sliders are fixed to the lower parts of both the front and rear tightening frames. A forward drive assembly connected to the pressing sole plate is also provided between the front and rear tightening frames. The left and right tightening components are arranged symmetrically facing each other and each includes a lateral support plate and a lateral tightening frame mounted on the lateral support plate. One side of the lateral tightening frame... The shoe is equipped with a lateral airbag structure connected to it. The lateral airbag structure includes a lateral tightening airbag and lateral inner and outer clamping plates sandwiched inside and outside the lateral tightening airbag. A linkage structure adapted to it is provided on the other side of the lateral tightening frame. A lateral drive assembly adapted to the linkage structure is also provided on the pressing plate. The toe pressing assembly includes a pressing bracket and a pressing guide seat fixed to the lower part of the pressing bracket. A pressing cylinder fixedly connected to the pressing guide seat is provided in the pressing bracket. The piston rod of the pressing cylinder passes through the pressing guide seat. A toe pressing plate and a toe pressing block are fixedly provided at the lower end of the piston rod of the pressing cylinder. A lateral closing knot adapted to the side of the shoe is also provided on the lateral tightening frame. The lateral closing structure includes a lateral closing cylinder and a lateral closing plate adapted to the lateral pressure plate. The lateral closing cylinder is located on one side of the lateral tightening frame and is fixedly connected to each other by a lateral cylinder connecting column. A closing connecting block is fixedly connected to the piston rod of the lateral closing cylinder. The closing connecting block and the lateral closing plate are respectively provided with matching connecting protrusions and connecting slots. The closing connecting block and the lateral closing plate are mutually engaged and connected by the connecting protrusions and connecting slots. The lower part of the closing connecting block is lower than the lateral closing plate. The lateral pressure plate is provided with a lateral closing groove adapted to the lateral closing plate. The lateral closing plate and the shoe rear closing plate are also respectively provided with matching lateral relief grooves and shoe rear relief grooves.
2. The pressing mechanism of a moldless bottom pressing machine according to claim 1, characterized in that: Both the front and rear tensioning components are equipped with matching airbag ventilation tubes and airbag photoelectric switches. The airbag photoelectric switch is fixed to the front or rear tensioning frame. The airbag ventilation tube passes through the inner and outer front clamps, and a ventilation sealing ring adapted to the inner front clamp is embedded in the airbag ventilation tube. The airbag ventilation tube has a hollow cavity structure, with its inner and outer ends respectively connected to the inner and outer sides of the front tensioning airbag. One inner end of the airbag ventilation tube abuts against the inside of the front tensioning airbag, and its outer end... One end of the airbag is fitted with an airbag photoelectric movable block that is fixedly connected to it. The airbag photoelectric movable block is provided with an airbag photoelectric protrusion that is compatible with the airbag photoelectric switch. The front and rear tensioning components are also provided with a slider photoelectric switch and a slider limiting rod. The slider photoelectric switch and the slider limiting rod are respectively fixed to the forward tensioning slider and the pressing side plate. The slider limiting rod is provided with a slider limiting groove that is compatible with it, and photoelectric limiting through holes that are compatible with the slider photoelectric switch are provided on both the front and rear sides of the side wall of the slider limiting groove.
3. The pressing mechanism of a moldless bottom pressing machine according to claim 1, characterized in that: The lateral support plate has a linkage slot adapted to the linkage structure. The linkage structure includes a linkage rotating block and a first linkage rod and a second linkage rod hinged to both ends of the linkage rotating block. The linkage rotating block is triangular in shape and is also hinged to the lateral support plate via a linkage support block. The first linkage rod is hinged to the lateral tensioning frame via a linkage clamping block. Adaptive lateral guide structures are also provided on both sides of the linkage structure. The lateral guide structure includes a lateral guide rod and a lateral guide seat fixed to the lateral support plate. One end of the lateral guide rod is fixedly connected to the lateral tensioning frame, and the other end... A lateral guide seat is provided through the lateral guide rod, and a lateral guide bushing is fitted on the lateral guide rod and fixedly connected to the lateral guide seat. A lateral pressure plate adapted to the toe pressing plate and the heel closing plate is also fixed on the lateral tensioning frame. An upper limit protrusion is fixed on one end of the lateral pressure plate. The sides of the toe pressing plate and the heel closing plate are respectively provided with pressure plate steps and closing steps adapted to the upper limit protrusion. The lower part of the lateral tensioning frame is also provided with a lower limit protrusion adapted to the bottom outer clamping plate. The left and right sides of the bottom outer clamping plate are provided with lower limit slots adapted to the lower limit protrusion. The upper end of the lateral pressure plate is provided with a foot limiting groove adapted to the toe pressing assembly.
4. The pressing mechanism of a moldless bottom pressing machine according to claim 3, characterized in that: The toe pressing assembly also includes a support cylinder and a support guide rail connected to the frame of the moldless sole pressing machine. The piston rod of the support cylinder is connected to the pressing support through a cylinder connector and a support connecting block. The support guide rail is slidably connected to the pressing support through a support slider. The toe pressing assembly also includes a presser foot support fixed to one side of the toe pressing plate. A height-adjustable presser foot connecting rod is inserted on the presser foot support. A shoe last presser foot block is hinged to the lower end of the presser foot connecting rod. The toe pressing plate is fixedly connected to the lower end of the piston rod of the pressing cylinder through a pressing flange. A pressing guide rod is fixed on the toe pressing plate, penetrating the pressing guide seat. A pressing guide bushing connected to the pressing guide seat is sleeved on the pressing guide rod. The toe pressing plate and the toe pressing block are respectively connected to the pressing guide seat. The shoe features interlocking grooves and protrusions that engage with each other. The toe pressing plate and block are respectively equipped with toe-closing grooves and pressing arc-shaped parts adapted to the shoe's toe. Both the toe-closing groove and the heel-closing groove are arc-shaped. The toe pressing block also has an adjustable toe top block. A pressing foot support is horizontally connected to a pressing foot limiting plate. The lower sides of both ends of the pressing foot limiting plate are fixed with pressing foot limiting protrusions adapted to the pressing foot limiting grooves. The upper sides of both ends of the pressing foot limiting plate are connected to the pressing foot support via pressing foot cylinders. The toe pressing block, toe top block, and the bottom, front, and side compression airbags are all made of rubber, and the bottom, front, and side compression airbags all have hollow cavity structures inside.
5. The pressing mechanism of a moldless bottom pressing machine according to claim 1, characterized in that: The number of forward drive components is set to two sets, each including a forward drive motor and a forward tightening screw adapted to the forward drive motor. A driving wheel and a driven wheel are respectively sleeved on the rotating shaft of the forward tightening motor and the forward tightening screw, and the driving wheel and the driven wheel are connected to each other by a synchronous belt. The forward tightening motor is fixedly connected to the lower part of the pressing base plate by a motor mounting seat. The forward tightening screws of both forward drive components pass through the forward tightening slider, and a forward slider nut is provided at the connection between the forward tightening slider and the forward tightening screw. A slider guide rod is also fixedly connected to the forward tightening slider. The slider guide rod passes through the pressing side plate and a slider guide bushing is provided at the connection. A screw bearing structure connected to the pressing side plate is also sleeved on the forward tightening screw.
6. The pressing mechanism of a moldless bottom pressing machine according to claim 1, characterized in that: The forward drive assembly includes a forward drive motor and a forward tightening screw adapted to the forward drive motor. A driving wheel and a driven wheel are respectively fitted onto the rotating shaft of the forward tightening motor and the forward tightening screw, and the driving wheel and driven wheel are connected to each other by a synchronous belt. The forward tightening motor is fixedly connected to the lower part of the pressing base plate by a motor mounting seat. Both ends of the forward tightening screw pass through forward tightening sliders on the front and rear tightening frames, respectively. Both ends of the forward tightening screw are respectively provided with external threads of equal spacing but opposite directions, forming a bidirectional screw. A forward tightening slider nut adapted to the external thread is provided on the forward tightening slider. A slider guide rod is fixedly connected to each forward tightening slider. The slider guide rod passes through the pressing side plate, and a slider guide bushing is provided at the connection point. A screw bearing structure connected to the pressing side plate is also fitted onto the forward tightening screw.
7. The pressing mechanism of a moldless bottom pressing machine according to claim 1, characterized in that: The lateral drive assembly includes a lateral clamping cylinder and a lateral linear guide rail fixed to the pressing base plate. A lateral guide rail slider is slidably connected to the lateral linear guide rail. A linkage cylinder block is hinged to the end of the second linkage rod on the lateral guide rail slider. The lateral guide rail slider and the linkage cylinder block are fixedly connected to each other by bolts. Two lateral clamping cylinders are provided. The lateral clamping cylinders are fixedly connected to each other by a lateral cylinder mounting plate and a lateral support plate. The piston rod of the lateral clamping cylinder is fixedly connected to the linkage cylinder block.
8. The pressing mechanism of a moldless bottom pressing machine according to claim 1, characterized in that: The pressing base plate is also provided with a lateral drive assembly adapted to the linkage structure. The lateral drive assembly includes a lateral clamping cylinder and a lateral linear guide rail fixed to the pressing base plate. A lateral guide rail slider is provided on the lateral linear guide rail and is slidably connected thereto. A linkage cylinder block is provided on the lateral guide rail slider and is hinged to the end of the second linkage rod. The lateral guide rail slider and the linkage cylinder block are fixedly connected to each other by bolts. There is one lateral clamping cylinder. The lateral clamping cylinder is fixedly connected to the lateral support plate by a lateral cylinder mounting plate. A lateral cylinder connecting block is fixedly connected to the piston rod of the lateral clamping cylinder. Both ends of the lateral cylinder connecting block are hinged to the lateral cylinder connecting rod. The end of the lateral cylinder connecting rod is also hinged to the lateral slider guide rod. The lateral slider guide rod is fixedly connected to the linkage cylinder block. The lateral slider guide rod is connected to the pressing base plate by a lateral guide rod bushing and a lateral guide rod seat.
9. The pressing mechanism of a moldless bottom pressing machine according to claim 1, characterized in that: The heel closing plate is also provided with a heel closing structure, which includes a heel closing slider and a heel closing cylinder fixed on the heel closing plate. The heel closing plate is provided with a heel limiting groove and a heel cylinder slot that are adapted to the heel closing slider. The heel closing slider slides back and forth in the heel limiting groove. The piston rod of the heel closing cylinder is connected to the heel closing slider through a heel connecting block.