A pressure maintaining tank for producing a leather sheath keyboard

Abstract

The utility model discloses a kind of pressure-maintaining cabinets for leather sheath keyboard production, including mounting bracket, first pressure-maintaining module and second pressure-maintaining module, mounting bracket is equipped with first pressure cavity and second pressure cavity, first pressure-maintaining module includes first cylinder, first movable piece in first pressure cavity and at least four first pressure block;First cylinder is installed on mounting bracket, and its output end is connected with first movable piece through first perforation in the top of first pressure cavity, and first pressure block is evenly distributed in the lower end surface of first movable piece, second pressure-maintaining module includes second cylinder, second movable piece in second pressure cavity, first fixture and cover plate;Second cylinder output end is connected with second movable piece through second perforation in the top of second pressure cavity to drive its lifting, and first fixture is slidably installed in the bottom surface of second pressure cavity, and cover plate is covered on the upper end of first fixture, and the pressure-maintaining cabinet can be locally or integrally pressure-maintained for different parts of leather sheath keyboard through multiple independent pressure-maintaining modules, and the processing adaptability and product quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of product pressure holding technology, and in particular to a pressure holding cabinet for the production of leather keyboard cases. Background Technology

[0002] In the actual production process of leather keyboard cases for tablets, after the keyboard and leather case are glued together, a pressure holding process is carried out to ensure that the leather case and keyboard are fully bonded. Existing pressure holding devices for leather keyboard cases usually adopt an integral pressure holding method, that is, a whole pressure block is used in conjunction with a fixture to position and hold the keyboard. Although this design can meet the keyboard fixing requirements to a certain extent, it also has obvious limitations.

[0003] Chinese utility model patent (authorization announcement number: CN216910831U) discloses a leather keyboard adhesive application and pressure-holding device with positioning function, including a workbench and a mounting bracket. A glue spraying mechanism is installed on the rear side wall of the top of the workbench, a support platform is installed on the front side wall of the top of the workbench, and a mounting block is installed on the top wall of the moving block. The top wall of the mounting block has a placement groove, and a clamping block is slidably inserted into the top of the inner cavity of the placement groove. A fixing bolt for fixing the clamping block is screwed to the outer wall of the mounting block. In the device, the leather case and the keyboard are fixed and positioned by the upper clamp and the clamping plate, so that the keyboard and the leather case will not move after the glue is applied, thus avoiding the loosening of the connection. However, in actual use, the above-mentioned leather keyboard adhesive application and pressure-holding device cannot provide local pressure holding for local parts of the leather keyboard. With the continuous development of keyboard technology, the types of leather keyboards are becoming more and more diversified. The required pressure holding strength for different parts of the leather keyboard is also different. The existing overall pressure holding device often cannot be well adapted to these new keyboards, resulting in poor pressure holding effect. Utility Model Content

[0004] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0005] A pressure-holding cabinet for manufacturing leather keyboard cases includes a mounting frame, a first pressure-holding module, and a second pressure-holding module. The mounting frame has a first pressure-holding cavity and a second pressure-holding cavity. The first pressure-holding module includes a first cylinder, a first movable component located within the first pressure-holding cavity, and at least four first pressure blocks. A first through hole is provided at the top of the first pressure-holding cavity. The first cylinder is detachably mounted on the upper end face of the mounting frame near the first pressure-holding cavity. The output end of the first cylinder passes through the first through hole and connects to the upper end face of the first movable component. The first pressure blocks are evenly distributed on the lower end face of the first movable component. The second pressure-holding module includes a second cylinder, a second movable component located in the second pressure-holding chamber, a first fixture, and a cover plate. The top of the second pressure-holding chamber has a second through hole. The second cylinder is detachably mounted on the upper end face of the mounting bracket near the second pressure-holding chamber. The output end of the second cylinder passes through the second through hole and connects to the upper end face of the second movable component to drive the second movable component to rise and fall. The first fixture is slidably mounted on the bottom surface of the second pressure-holding chamber, and the cover plate covers the upper end of the first fixture.

[0006] As a further embodiment of this utility model: the first pressure holding module further includes at least two first positioning posts, the two first positioning posts are evenly distributed on the lower end surface of the first movable part, one end of the first positioning post is inserted into the lower end surface of the first movable part, the other end of the first positioning post is rounded, and the bottom surface of the first pressure holding cavity is provided with a first positioning hole corresponding to the position of the first positioning post.

[0007] As a further embodiment of this utility model: one end of the first pressing block is inserted into the lower end face of the first movable member, and the other end of the first pressing block is provided with a pressing part, which is cylindrical.

[0008] As a further embodiment of this utility model: a first sliding groove is provided on the bottom surface of the second pressure-holding cavity, the upper end of the first sliding groove is connected to the second pressure-holding cavity, the first fixture is slidably inserted into the first sliding groove, and a handrail is provided on the front side of the first fixture.

[0009] As a further embodiment of this utility model: the pressure holding cabinet also includes a third pressure holding module. The mounting frame has a third pressure holding cavity. The third pressure holding module includes a third cylinder, a third movable member located in the third pressure holding cavity, a second fixture, at least four second pressure blocks, and a pressure plate. The mounting frame has a first mounting cavity located at the top of the third pressure holding cavity. The third cylinder is installed in the first mounting cavity. The upper end face of the third pressure holding cavity has a third through hole for connecting to the first mounting cavity. The output end of the third cylinder passes through the third through hole and connects to the upper end face of the third movable member. The four second pressure blocks are evenly distributed on the lower end face of the second movable member near the end. The upper end face of the pressure plate connects to the lower end face of the second movable member located at the center. The second fixture is installed on the bottom surface of the third pressure holding cavity.

[0010] As a further embodiment of this utility model: the third pressure holding module also includes at least two second positioning posts, the two second positioning posts are evenly distributed on the lower end face of the third movable member, the upper end of the second positioning post is inserted into the lower end face of the third movable member, the lower end of the second positioning post is rounded, and the end face of the second fixture is provided with a second positioning hole corresponding to the position of the second positioning post.

[0011] As a further embodiment of this utility model: the pressure holding cabinet also includes a fourth pressure holding module, the mounting frame has a fourth pressure holding cavity, the fourth pressure holding module includes a fourth cylinder, a fourth movable part located in the fourth pressure holding cavity and at least 4 third pressure blocks, the mounting frame has a second mounting cavity, the second mounting cavity is located at the top of the fourth pressure holding cavity, the fourth cylinder is installed in the second mounting cavity, the upper end face of the fourth pressure holding cavity has a fourth through hole for connecting to the second mounting cavity, the output end of the fourth cylinder passes through the fourth through hole for connecting to the upper end face of the fourth movable part, and the 4 third pressure blocks are evenly distributed on the lower end face of the fourth movable part.

[0012] As a further embodiment of this utility model: the fourth pressure holding module also includes at least two third positioning posts, the two third positioning posts are evenly distributed on the lower end face of the fourth movable part, the upper end of the third positioning post is inserted into the lower end face of the fourth movable part, the lower end of the third positioning post is rounded, and the bottom surface of the fourth pressure holding cavity is provided with a third positioning hole corresponding to the position of the third positioning post.

[0013] As a further embodiment of this utility model: the pressure holding cabinet also includes a fifth pressure holding module. The mounting frame has a fifth pressure holding cavity. The fifth pressure holding module includes a fifth cylinder, a fifth movable part located in the fifth pressure holding cavity, at least four fourth pressure blocks, and a third fixture. The mounting frame has a third mounting cavity located at the top of the fifth pressure holding cavity. The fifth cylinder is installed in the third mounting cavity. A fifth through hole is provided on the upper end face of the fifth pressure holding cavity for connecting to the third mounting cavity. The output end of the fifth cylinder passes through the fifth through hole for connecting to the upper end face of the fifth movable part. The four fourth pressure blocks are evenly distributed on the lower end face of the fifth movable part. The third fixture is slidably installed on the lower end face of the third pressure holding cavity.

[0014] As a further embodiment of this utility model: the fifth pressure holding module also includes a heating component, which includes an electric heating block, a guide seat, four guide posts and four elastic elements. The upper end face of the electric heating block is connected to the lower end face of the fifth movable element. The guide seat has a guide through hole for fitting onto the lower end of the electric heating block. Each guide seat has four first through holes. The lower end of each guide post has a second stop. The guide post passes through the first through hole so that the second stop abuts against the lower opening of the first through hole. The elastic elements are fitted onto the guide post. The upper end of the guide post is connected to the upper end face of the fifth movable element.

[0015] Compared with the prior art, the beneficial effects of this utility model are: by setting multiple sets of pressure-holding modules in the pressure-holding cabinet, the multiple sets of pressure-holding modules can perform local pressure holding on the leather keyboard in a targeted manner, which is conducive to adapting to the pressure holding strength required by different positions of the leather keyboard and better meeting the different pressure holding requirements of the leather keyboard.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the mounting bracket in this utility model.

[0019] Figure 2 This is a top view of the mounting bracket in this utility model.

[0020] Figure 3 yes Figure 2 A cross-sectional view of section AA.

[0021] Figure 4 This is a cross-sectional view of the elastic buffer structure in this utility model.

[0022] Figure 5 This is a structural schematic diagram of the fifth pressure-holding module in this utility model.

[0023] Figure 6 This is a schematic diagram of the heating component in this utility model.

[0024] In the diagram: 1. Mounting bracket; 11. First pressure-holding chamber; 111. First through hole; 112. First positioning hole; 12. Second pressure-holding chamber; 121. Second through hole; 122. First sliding groove; 13. Third pressure-holding chamber; 131. Third through hole; 132. Second positioning hole; 14. First mounting chamber; 15. Fourth pressure-holding chamber; 151. Fourth through hole; 152. Third positioning hole; 16. Second mounting chamber; 17. Fifth pressure-holding chamber; 171. Fifth through hole; 18. Third mounting chamber; 21. First cylinder; 22. First moving part; 23. First pressure block; 231. Pressing part; 24. First positioning pin; 31. Second cylinder; 32. Second moving part; 33. First fixture; 331. Handrail; 34. Cover plate; 41. Third cylinder; 42. Third moving part; 43. Second fixture; 44. Second pressure block; 45. Pressure plate; 46. Second positioning pin; 51. Fourth cylinder; 52. Fourth moving part; 53. Third pressure block; 54. Third positioning pin; 55. Elastic buffer structure; 551. Sliding hole; 552. Spring; 554. First stop block; 531. Abutment part; 61. Fifth cylinder; 62. Fifth moving part; 63. Fourth pressure block; 64. Third fixture; 651. Electric heating block; 652. Guide seat; 6521. Guide through hole; 6522. First through hole; 653. Guide post; 6531. Second stop block; 654. Elastic element. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] Please see Figures 1-3 In this embodiment of the present invention, a pressure-holding cabinet for producing leather keyboard cases includes a mounting frame 1, a first pressure-holding module, and a second pressure-holding module. The mounting frame 1 has a first pressure-holding cavity 11 and a second pressure-holding cavity 12. The first pressure-holding module includes a first cylinder 21, a first movable part 22 located in the first pressure-holding cavity 11, and at least four first pressure blocks 23. A first through hole 111 is provided at the top of the first pressure-holding cavity 11. The first cylinder 21 is detachably mounted on the upper end face of the mounting frame 1 near the first pressure-holding cavity 11. The output end of the first cylinder 21 passes through the first through hole 111 and connects to the upper end face of the first movable part 22. The first pressure blocks 23 are evenly distributed on the lower end face of the first movable part 22 to provide pressure for local areas of the leather keyboard case. For example, the first pressure blocks 23 apply pressure to the periphery of the keys of the leather keyboard case to achieve the pressure-holding effect.

[0027] The second pressure-holding module includes a second cylinder 31, a second movable component 32 located in the second pressure-holding chamber 12, a first fixture 33, and a cover plate 34. The top of the second pressure-holding chamber 12 has a second through hole 121. The second cylinder 31 is detachably mounted on the upper end face of the mounting bracket 1 near the second pressure-holding chamber 12. The output end of the second cylinder 31 passes through the second through hole 121 and connects to the upper end face of the second movable component 32 to drive the second movable component 32 to rise and fall. The first fixture 33 is slidably mounted on the bottom surface of the second pressure-holding chamber 12. The cover plate 34 covers the upper end of the first fixture 33. When it is necessary to hold pressure in the second pressure-holding chamber 12, the cover plate 34 is first removed, and then the leather keyboard to be held is placed on the upper end face of the first fixture 33. Then the cover plate 34 is placed on the leather keyboard to be held. When the second movable component 32 presses down against the cover plate 34, the lower end face of the cover plate 34 can apply pressure to the entire surface of the leather keyboard to achieve the pressure-holding effect. The first and second pressure-holding modules are independent of each other, allowing for pressure-holding processes with different pressures and durations to be performed simultaneously, resulting in high production efficiency and good flexibility.

[0028] Further as Figures 1-3As shown in the embodiment of this utility model, the first pressure-holding module further includes at least two first positioning posts 24. The two first positioning posts 24 are evenly distributed on the lower end face of the first movable member 22. The upper end of the first positioning post 24 is inserted into the lower end face of the first movable member 22, and the lower end of the first positioning post 24 is rounded. A first positioning hole 112 is correspondingly opened on the bottom surface of the first pressure-holding cavity 11 near the position of the first positioning post 24. When the first movable member 22 descends, the lower end of the first positioning post 24 is inserted into the first positioning hole 112, which guides and precisely positions the downward pressure of the first pressure block 23. At the same time, the rounded lower end of the first positioning post 24 facilitates insertion into the first positioning hole 112, reducing wear between the first positioning post 24 and the first positioning hole 112. Specifically, the first positioning post 24 and the first positioning hole 112 are clearance fit, which helps to reduce friction between the first positioning post 24 and the first positioning hole 112 and can extend the service life.

[0029] Further as Figures 1-3 As shown in the embodiment of this utility model, one end of the first pressing block 23 is inserted into the lower end face of the first movable member 22, and the other end of the first pressing block 23 is provided with a pressing part 231 for pressing a local position of the leather keyboard. The pressing part 231 is cylindrical for easy processing and shaping. The first pressing block 23 can press a local key position of the leather keyboard, such as strengthening the pressure around the keys, which can meet the pressure requirements of the leather keyboard for different positions.

[0030] Further as Figures 1-3 As shown in the embodiment of this utility model, the bottom surface of the second pressure-holding cavity 12 is provided with a first sliding groove 122, the upper end of the first sliding groove 122 is connected to the second pressure-holding cavity 12, and the first fixture 33 is slidably inserted into the first sliding groove 122. The front side of the first fixture 33 is provided with a handle 331. The sliding cooperation between the first sliding groove 122 and the first fixture 33 allows the fixture to be easily pulled out and pushed in, facilitating the picking and placing of workpieces. Specifically, the first sliding groove 122 is a T-shaped groove (not shown in the figure), and the bottom of the first fixture 33 is provided with a corresponding T-shaped slider (not shown in the figure) for insertion into the first sliding groove 122. The cooperation between the T-shaped groove and the T-shaped slider can improve the stability of the first fixture 33 during the sliding process and prevent it from shifting.

[0031] Further as Figures 1-3As shown, in an embodiment of this utility model, the pressure-holding cabinet further includes a third pressure-holding module. The mounting frame 1 has a third pressure-holding cavity 13. The third pressure-holding module includes a third cylinder 41, a third movable member 42 located in the third pressure-holding cavity 13, a second fixture 43, at least four second pressure blocks 44, and a pressure plate 45. The mounting frame 1 has a first mounting cavity 14 located at the top of the third pressure-holding cavity 13. The third cylinder 41 is installed in the first mounting cavity 14. The upper end face of the third pressure-holding cavity 13 has a third through hole 131 for connecting to the first mounting cavity 14. The output end of the third cylinder 41 passes through the third through hole 131 and connects to the upper end face of the third movable member 42 for driving the third movable member 42 to rise and fall. The four second pressure blocks 44 are evenly distributed on the lower end face of the third movable member 42 near the end. The upper end face of the pressure plate 45 is connected to the lower end face of the third movable member 42 located at the center. The second fixture 43 is installed on the bottom surface of the third pressure-holding cavity 13. The pressing area of ​​the pressure plate 45 on the keyboard case is much larger than that of the second pressure block 44, creating a composite pressure-holding mode of "surface pressure + point pressure" between the pressure plate 45 and the second pressure block 44. The pressure plate 45 provides overall flat pressure, while the second pressure block 44 provides supplementary pressure to the surrounding areas or specific points. This is suitable for keyboard cases with a large central flat surface that requires reinforced fixation at the perimeter. Specifically, silicone pads are attached to the surfaces of the pressure plate 45 and the second pressure block 44 to reduce rigid contact with the keyboard case, providing cushioning and pre-tightening when the third moving part 42 is pressed down.

[0032] Further as Figures 1-3 As shown in the embodiment of this utility model, the third pressure-holding module further includes at least two second positioning posts 46. The two second positioning posts 46 are evenly distributed on the lower end face of the third movable member 42. The upper end of the second positioning post 46 is inserted into the lower end face of the third movable member 42, and the lower end of the second positioning post 46 is rounded. The end face of the second fixture 43 is provided with a second positioning hole 132 corresponding to the position of the second positioning post 46. When the third movable member 42 descends, the lower end of the second positioning post 46 is inserted into the second positioning hole 132, which guides and precisely positions the downward pressure of the pressure plate 45 and the second pressure block 44. At the same time, the rounded lower end of the second positioning post 46 facilitates insertion into the second positioning hole 132, which can reduce wear between the second positioning post 46 and the second positioning hole 132. Specifically, the second positioning post 46 and the second positioning hole 132 are clearance fit, which helps to reduce friction between the second positioning post 46 and the second positioning hole 132 and can extend the service life.

[0033] Further as Figures 1-4As shown, in an embodiment of this utility model, the pressure holding cabinet further includes a fourth pressure holding module. The mounting frame 1 has a fourth pressure holding chamber 15. The fourth pressure holding module includes a fourth cylinder 51, a fourth movable component 52 located in the fourth pressure holding chamber 15, and at least four third pressure blocks 53. The mounting frame 1 has a second mounting chamber 16 located at the top of the fourth pressure holding chamber 15. The fourth cylinder 51 is installed in the second mounting chamber 16. A fourth through hole 151 is provided on the upper surface of the fourth pressure holding chamber 15 to connect to the second mounting chamber 16. The output end of the fourth cylinder 51 passes through the fourth through hole 151 to connect to the upper surface of the fourth movable component 52. The four third pressure blocks 53 are evenly distributed on the lower surface of the fourth movable component 52. The fourth pressure holding module, as another independent workstation, can be configured with different pressure parameters or pressure holding times to meet the needs of different product models or different process stages on the production line.

[0034] Specifically, see the attached document. Figure 4 An elastic buffer structure 55 is provided between the third pressure block 53 and the fourth movable member 52. The elastic buffer structure 55 includes a sliding hole 551 on the lower end face of the fourth movable member 52, corresponding to the number of third pressure blocks 53. A spring 552 is installed inside the sliding hole 551. The third pressure block 53 is slidably inserted into the sliding hole 551. The upper end of the third pressure block 53 is provided with an abutting part 531 that abuts against the spring 552. A first stop block 554 is welded to the lower opening of the sliding hole 551 to abut against the lower end of the abutting part 531 to prevent the third pressure block 53 from sliding out of the sliding hole 551. When the fourth movable member 52 drives the third pressure block 53 to maintain pressure on the leather keyboard, if the thickness of the workpiece is out of tolerance or the pressure is too large, the abutting part 531 will squeeze the spring 552 to play a buffering role, which can effectively prevent hard impact from damaging the surface of the leather case or the internal components of the keyboard.

[0035] Further as Figures 1-3 As shown in the embodiment of this utility model, the fourth pressure-holding module further includes at least two third positioning posts 54. The two third positioning posts 54 are evenly distributed on the lower end face of the fourth movable member 52. The upper end of the third positioning post 54 is inserted into the lower end face of the fourth movable member 52, and the lower end of the third positioning post 54 is rounded. A third positioning hole 152 is correspondingly opened on the bottom surface of the fourth pressure-holding cavity 15 near the third positioning post 54. When the fourth movable member 52 descends, the lower end of the third positioning post 54 is inserted into the third positioning hole 152, which guides and precisely positions the downward pressure of the third pressure block 53. At the same time, the rounded lower end of the third positioning post 54 facilitates insertion into the third positioning hole 152, which can reduce wear between the third positioning post 54 and the third positioning hole 152. Specifically, the third positioning post 54 and the third positioning hole 152 are clearance fit, which helps to reduce friction between the third positioning post 54 and the third positioning hole 152 and can extend the service life.

[0036] Further as Figures 1-3 and Figure 5 As shown, in an embodiment of this utility model, the pressure-holding cabinet further includes a fifth pressure-holding module. The mounting frame 1 has a fifth pressure-holding cavity 17. The fifth pressure-holding module includes a fifth cylinder 61, a fifth movable component 62 located in the fifth pressure-holding cavity 17, at least four fourth pressure blocks 63, and a third fixture 64. The mounting frame 1 has a third mounting cavity 18 located at the top of the fifth pressure-holding cavity 17. The fifth cylinder 61 is installed inside the third mounting cavity 18. A fifth through hole 171 is provided on the upper end face of the fifth pressure-holding cavity 17 for connecting to the third mounting cavity 18. The output end of the fifth cylinder 61 passes through the fifth through hole 171 for connecting to the upper end face of the fifth movable component 62. The four fourth pressure blocks 63 are evenly distributed on the lower end face of the fifth movable component 62. The third fixture 64 is slidably installed on the lower end face of the third pressure-holding cavity 13. The fifth pressure-holding module integrates a slidable fixture, facilitating the loading and unloading of workpieces. Its function is similar to the second module, and it can serve as another independent workstation on the production line.

[0037] Specifically, at least two slide rails running from front to back are provided on the bottom surface of the fifth pressure-holding chamber 17. Two second slide grooves are correspondingly provided at the lower end of the third fixture 64 for slidingly mounting the third fixture 64 on the slide rails. A handrail 331 is also provided on the front side of the third fixture 64, allowing users to easily grasp the handrail 331 and push the third fixture 64. The second slide grooves and dovetail-shaped slide rails can be slidably connected. The shape of the dovetail groove provides very precise guidance, ensuring that the third fixture 64 can slide smoothly along the predetermined slide rail path, while also limiting lateral displacement of the third fixture 64 during sliding, thus enabling the third fixture 64 to slide smoothly.

[0038] Further as Figure 6As shown, in an embodiment of this utility model, the fifth pressure-holding module further includes a heating component. The heating component includes an electric heating block 651, a guide seat 652, four guide posts 653, and four elastic members 654. The upper end face of the electric heating block 651 is connected to the lower end face of the fifth movable member 62. The guide seat 652 has a guide through hole 6521 for fitting onto the lower end of the electric heating block 651. Each guide seat 652 has four first through holes 6522. The lower end of the guide post 653 is provided with a second stop 6531. The guide post 653 passes through the first through hole 6522 so that the second stop 6531 abuts against the lower opening of the first through hole 6522. The elastic member 654 is fitted onto the guide post 653. The upper end of the guide post 653 is connected to the upper end face of the fifth movable member 62, so that the guide seat 652 can provide a guiding effect when the electric heating block 651 is pressed down, ensuring that the electric heating block 651 can only move in the vertical direction without deflection. The electric heating block 651 can heat the leather keyboard case, for example, in the pressure-holding process of a leather keyboard case bonded with hot melt adhesive. Hot pressing improves the bonding strength and hot-pressing quality. On the other hand, the buffer mechanism composed of the guide post 653, the elastic element 654, and the guide seat 652 can compensate for workpiece thickness tolerances, preventing damage to the leather keyboard case due to excessive pressure or direct hard contact with the heating block. Specifically, the electric heating block 651 is made of aluminum with an embedded stainless steel heating element, and the elastic element 654 can be a stainless steel helical compression spring 552.

[0039] The working principle of this utility model is as follows: the leather keyboard to be pressurized is placed into the first pressurizing cavity 11, the second pressurizing cavity 12, the third pressurizing cavity 13, the fourth pressurizing cavity 15 and the fifth pressurizing cavity 17 for pressurization processes in different parts.

[0040] For the first pressure holding module, the workpiece is placed directly on the bottom surface of the first pressure holding chamber 11. The first cylinder 21 is activated, and the output end of the first cylinder 21 pushes the first movable part 22 downward. The first positioning pin 24 at its lower end will be inserted into the first positioning hole 112 on the bottom surface of the first pressure holding chamber 11 first, ensuring that the multiple first pressure blocks 23 evenly distributed below the first movable part 22 can accurately align with the key local areas on the workpiece (such as the area around the keys of the leather keyboard) to apply pressure.

[0041] For the second pressure-holding module, the first fixture 33, which is slidably mounted, is pulled out from the groove at the bottom of the second pressure-holding chamber 12 via the handle 331. After the leather keyboard to be pressure-held is placed, it is pushed back, and the second cylinder 31 is activated. The output end of the second cylinder 31 pushes the second movable part 32 downward to pressurize the cover plate 34. The pressure of the second movable part 32 is transmitted to the first fixture 33 through the cover plate 34. The lower end of the cover plate 34 applies pressure to the entire surface of the leather keyboard, thereby achieving the pressure-holding effect.

[0042] For the third pressure-holding module, the leather keyboard to be pressure-held is placed on the upper surface of the second fixture 43. The third movable part 42 is driven to rise and fall by the third cylinder 41. The third movable part 42 simultaneously drives the pressure plate 45 and the second pressure block 44 to move downward until the lower surfaces of the pressure plate 45 and the second pressure block 44 are pressed against the upper surface of the leather keyboard. The pressure plate 45 and the second pressure block 44 form a composite pressure-holding mode of "surface pressure + point pressure" for the leather keyboard to be pressure-held. This is suitable for leather keyboard assemblies with a large central flat surface and the periphery needing to be reinforced and fixed.

[0043] The fourth pressure holding module, as another independent workstation, can be configured with different pressure parameters or holding time to meet the needs of different product models or different process stages on the production line. The leather keyboard to be pressure held is placed at the bottom of the fourth pressure holding chamber 15. The fourth cylinder 51 drives the fourth movable part 52 to rise and fall. The fourth movable part 52 drives the third pressure block 53 to rise and fall. The third pressure block 53 can hold the pressure on the keyboard. An elastic buffer structure 55 is provided between the third pressure block 53 and the fourth movable part 52. When the thickness of the keyboard to be pressure held is too large or the set pressure holding pressure is too large, when the third pressure block 53 presses against the leather keyboard, the abutting part 531 of the third pressure block 53 will squeeze the spring 552 upward to play a buffering role, which can effectively prevent hard impact from damaging the surface of the leather case or the internal components of the keyboard.

[0044] For the fifth pressure-holding module, the leather keyboard to be pressure-held is placed on the upper surface of the third fixture 64. The fifth movable part 62 is driven to rise and fall by the fifth cylinder 61. The fifth movable part 62 can drive the fourth pressure block 63 to rise and fall synchronously. The fourth pressure block 63 can press the leather keyboard. At the same time, the fifth movable part 62 is also equipped with a heating component. In the case of leather keyboards with hot melt adhesive, the electric heating block 651 descends synchronously with the fifth movable part 62 to heat press the leather keyboard, which can improve the bonding strength and hot pressing quality. On the other hand, the buffer mechanism composed of the guide post 653, the elastic element 654 and the guide seat 652 can compensate for the thickness tolerance of the workpiece and prevent the leather keyboard from being damaged due to excessive pressure or direct hard contact of the heating block.

[0045] By using multiple independent and functionally different pressure-holding modules, the leather keyboard assembly can be processed in a flexible, precise and multi-process manner, which is conducive to adapting to the pressure-holding strength required in different positions of the leather keyboard and better meeting the different pressure-holding requirements of the leather keyboard.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A pressure maintaining tank for producing a skin keyboard, characterized by, The system includes a mounting frame (1), a first pressure-holding module, and a second pressure-holding module. The mounting frame (1) has a first pressure-holding cavity (11) and a second pressure-holding cavity (12). The first pressure-holding module includes a first cylinder (21), a first movable part (22) located in the first pressure-holding cavity (11), and at least four first pressure blocks (23). The top of the first pressure-holding cavity (11) has a first through hole (111). The first cylinder (21) is detachably mounted on the upper end face of the mounting frame (1) near the first pressure-holding cavity (11). The output end of the first cylinder (21) passes through the first through hole (111) and connects to the upper end face of the first movable part (22). The first pressure blocks (23) are evenly distributed on the lower end face of the first movable part (22). The second pressure holding module includes a second cylinder (31), a second movable part (32) located in the second pressure holding chamber (12), a first fixture (33) and a cover plate (34). The top of the second pressure holding chamber (12) is provided with a second through hole (121). The second cylinder (31) is detachably mounted on the upper end face of the mounting bracket (1) near the second pressure holding chamber (12). The output end of the second cylinder (31) passes through the second through hole (121) and connects to the upper end face of the second movable part (32) to drive the second movable part (32) to rise and fall. The first fixture (33) is slidably mounted on the bottom surface of the second pressure holding chamber (12). The cover plate (34) covers the upper end of the first fixture (33).

2. The pressure retaining cabinet of claim 1, wherein, The first pressure holding module also includes at least two first positioning posts (24). The two first positioning posts (24) are evenly distributed on the lower end face of the first movable part (22). One end of the first positioning post (24) is inserted into the lower end face of the first movable part (22), and the other end of the first positioning post (24) is rounded. The bottom surface of the first pressure holding cavity (11) is provided with a first positioning hole (112) at the position close to the first positioning post (24).

3. The pressure retaining cabinet of claim 1, wherein, One end of the first pressure block (23) is inserted into the lower end face of the first movable part (22), and the other end of the first pressure block (23) is provided with a pressing part (231), which is cylindrical.

4. The pressure retaining cabinet of claim 1, wherein, The bottom surface of the second pressure-holding cavity (12) is provided with a first sliding groove (122), the upper end of the first sliding groove (122) is connected to the second pressure-holding cavity (12), the first fixture (33) is slidably inserted into the first sliding groove (122), and the front side of the first fixture (33) is provided with a handrail (331).

5. The pressure-holding cabinet according to claim 1, characterized in that, The pressure holding cabinet also includes a third pressure holding module. The mounting frame (1) has a third pressure holding chamber (13). The third pressure holding module includes a third cylinder (41), a third movable part (42) located in the third pressure holding chamber (13), a second fixture (43), at least four second pressure blocks (44) and a pressure plate (45). The mounting frame (1) has a first mounting chamber (14). The first mounting chamber (14) is located at the top of the third pressure holding chamber (13). The third cylinder (41) is installed in the first mounting chamber (14). The upper end face of the third pressure holding chamber (13) is provided with a third through hole (131) for connecting the first mounting chamber (14). The output end of the third cylinder (41) passes through the third through hole (131) and connects to the upper end face of the third movable part (42). Four second pressure blocks (44) are evenly distributed on the lower end face of the second movable part (32) near the end. The upper end face of the pressure plate (45) is connected to the lower end face of the second movable part (32) located at the center. The second fixture (43) is installed on the bottom surface of the third pressure holding chamber (13).

6. The pressure retaining cabinet of claim 5, wherein, The third pressure holding module also includes at least two second positioning posts (46). The two second positioning posts (46) are evenly distributed on the lower end face of the third movable part (42). The upper end of the second positioning post (46) is inserted into the lower end face of the third movable part (42). The lower end of the second positioning post (46) is rounded. The end face of the second fixture (43) is provided with a second positioning hole (132) at the position close to the second positioning post (46).

7. The pressure retaining cabinet of claim 1, wherein, The pressure holding cabinet also includes a fourth pressure holding module. The mounting frame (1) has a fourth pressure holding chamber (15). The fourth pressure holding module includes a fourth cylinder (51), a fourth movable part (52) located in the fourth pressure holding chamber (15), and at least four third pressure blocks (53). The mounting frame (1) has a second mounting chamber (16). The second mounting chamber (16) is located at the top of the fourth pressure holding chamber (15). The fourth cylinder (51) is installed in the second mounting chamber (16). The upper end face of the fourth pressure holding chamber (15) has a fourth through hole (151) for connecting the second mounting chamber (16). The output end of the fourth cylinder (51) passes through the fourth through hole (151) for connecting the upper end face of the fourth movable part (52). The four third pressure blocks (53) are evenly distributed on the lower end face of the fourth movable part (52).

8. The pressure retaining cabinet of claim 7, wherein, The fourth pressure holding module also includes at least two third positioning posts (54). The two third positioning posts (54) are evenly distributed on the lower end face of the fourth movable part (52). The upper end of the third positioning post (54) is inserted into the lower end face of the fourth movable part (52). The lower end of the third positioning post (54) is rounded. The bottom surface of the fourth pressure holding cavity (15) is provided with a third positioning hole (152) at a position close to the third positioning post (54).

9. The pressure retaining cabinet of claim 1, wherein, The pressure holding cabinet also includes a fifth pressure holding module. The mounting frame (1) has a fifth pressure holding chamber (17). The fifth pressure holding module includes a fifth cylinder (61), a fifth movable part (62) located in the fifth pressure holding chamber (17), at least four fourth pressure blocks (63) and a third fixture (64). The mounting frame (1) has a third mounting chamber (18). The third mounting chamber (18) is located at the top of the fifth pressure holding chamber (17). The fifth cylinder (61) is installed in the third mounting chamber (18). The upper end face of the fifth pressure holding chamber (17) has a fifth through hole (171) for connecting the third mounting chamber (18). The output end of the fifth cylinder (61) passes through the fifth through hole (171) for connecting the upper end face of the fifth movable part (62). The four fourth pressure blocks (63) are evenly distributed on the lower end face of the fifth movable part (62). The third fixture (64) is slidably installed on the lower end face of the third pressure holding chamber (13).

10. The pressure retaining cabinet of claim 9, wherein, The fifth pressure holding module also includes a heating component, which includes an electric heating block (651), a guide seat (652), four guide posts (653) and four elastic elements (654). The upper end face of the electric heating block (651) is connected to the lower end face of the fifth movable element (62). The guide seat (652) is provided with a guide through hole (6521) for fitting onto the lower end of the electric heating block (651). Each guide seat (652) is provided with four first through holes (6522). The lower end of the guide post (653) is provided with a second stop (6531). The guide post (653) passes through the first through hole (6522) so that the second stop (6531) abuts against the lower opening of the first through hole (6522). The elastic element (654) is fitted onto the guide post (653). The upper end of the guide post (653) is connected to the upper end face of the fifth movable element (62).

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