Multi-key piano key switch assembly line

Abstract

The case relates to a multi-key keyboard switch assembly production line, including a rack and a first assembly line and a second assembly line arranged on the rack, the first assembly line includes a first material conveying channel, the first assembly line further includes a first feeding mechanism, a first loading mechanism, a second loading mechanism and a material transfer mechanism arranged in sequence along the first material conveying channel from left to right according to the process flow; the second assembly line includes a second material conveying channel, and the second assembly line further includes a second feeding mechanism, a third loading mechanism, a pressing mechanism, a manual feeding position, a pressing mechanism and a discharging groove arranged in sequence along the second material conveying channel from left to right according to the process flow; the material transfer mechanism is used for transferring the material on the first assembly line to the second assembly line. Through the automatic design of the production line, the coordinated cooperation of the first assembly line and the second assembly line, and the coordinated control of each mechanism, efficient automatic production of multi-key keyboard switch assembly is realized.

Description

Technical Field

[0001] This utility model relates to the field of piano key switch production equipment, specifically to a multi-button piano key switch assembly line. Background Technology

[0002] Key switches are widely used in electric fans, household appliances, and other fields. Their functions involve not only mechanical operation but also the achievement of stable electrical connections and signal transmission. As a key conductive component, the copper sheet must be precisely installed in the pin slots of the base to ensure conductivity, contact pressure, and tactile feedback.

[0003] Traditional equipment typically uses a single-station or manual operation to sequentially press and install components such as clamping plates, return plates, and conductive copper sheets. This results in low production efficiency and makes it difficult to meet the needs of large-scale production, especially for the production of multi-button piano switches. This single-station or manual assembly line operation method is particularly inefficient.

[0004] Therefore, overcoming the aforementioned shortcomings has become an important issue that urgently needs to be addressed by those skilled in the art. Utility Model Content

[0005] This invention overcomes the shortcomings of the above-mentioned technologies and provides a production line for assembling multi-button piano key switches.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-button piano key switch assembly line includes a frame and a first production line and a second production line mounted on the frame. The first production line includes a first material conveying channel and further includes a first feeding mechanism, a first loading mechanism, a second loading mechanism, and a material transfer mechanism arranged sequentially from left to right along the first material conveying channel according to the process flow. The second production line includes a second material conveying channel and further includes a second feeding mechanism, a third loading mechanism, a pressing mechanism, a manual feeding station, a pressing mechanism, and a discharge chute arranged sequentially from left to right along the second material conveying channel according to the process flow. The material transfer mechanism is used to transfer materials from the first production line to the second production line.

[0008] Furthermore, the first loading mechanism includes a third feeding mechanism and a rotary feeding device disposed at the rear end of the third feeding mechanism. The rotary feeding device includes a first fixed bracket, a first telescopic cylinder connected to the first fixed bracket, a gear shaft mounted on the first fixed bracket, a first connecting bracket rotatably connected to the gear shaft, a second telescopic cylinder mounted on the first connecting bracket, and a first gripper cylinder connected to the second telescopic cylinder. A rack that meshes with the gear shaft is connected to the first telescopic cylinder.

[0009] Furthermore, the second loading mechanism includes a fourth feeding mechanism and a second feeding device connected to the rear end of the fourth feeding mechanism. The second feeding device includes a second fixed bracket, a third telescopic cylinder mounted on the second fixed bracket, and a receiving platform fixedly connected to the lower end of the third telescopic cylinder. The receiving platform is slidably connected to the second fixed bracket through a first sliding seat. The third telescopic cylinder is equipped with a push rod that can move with the telescopic movement of the third telescopic cylinder. The receiving platform includes a positioning head, a receiving seat, and a top material channel that runs through the receiving platform from top to bottom. The push rod is inserted downwards and movably disposed in the top material channel.

[0010] Furthermore, the material transfer mechanism includes a first motor, a receiving guide rail rotatably connected to the first motor via a rotating component, a first pressing cylinder connected to the front end of the receiving guide rail, and a first pushing cylinder connected to the lower end of the receiving guide rail. The receiving guide rail is connected to the right end of the first material transmission channel.

[0011] Furthermore, the third loading mechanism includes a fifth feeding mechanism and a third feeding device connected to the left end of the fifth feeding mechanism. The third feeding device includes a third fixed bracket, a first linear guide rail mounted on the upper end of the third fixed bracket, a fourth telescopic cylinder slidably connected to the first linear guide rail via a second slide block, a fifth telescopic cylinder connected to the second slide block, and a second gripper cylinder connected to the lower end of the fourth telescopic cylinder.

[0012] Furthermore, the pressing mechanism includes a fourth fixed bracket and a sixth telescopic cylinder mounted on the fourth fixed bracket, with a first pressure plate connected to the lower end of the sixth telescopic cylinder.

[0013] Furthermore, the clamping mechanism includes a fifth fixed bracket, a second linear guide rail mounted on the fifth fixed bracket, a seventh telescopic cylinder slidably connected to the second linear guide rail via a third slide block, and an eighth telescopic cylinder connected to the third slide block. The lower end of the seventh telescopic cylinder is connected to a second pressure plate.

[0014] Furthermore, the first production line is located at the front end of the second production line. The first production line also includes a first material transfer mechanism located between the first feeding mechanism and the first loading mechanism, and a second material transfer mechanism located between the second loading mechanism and the material transfer mechanism. The second production line also includes a third material transfer mechanism located at the lower end of the second material transmission channel. The third material transfer mechanism is located between the third loading mechanism and the pressing mechanism.

[0015] Furthermore, the first material transfer mechanism includes a linear module, a ninth telescopic cylinder movably connected to the front end of the linear module, and a material transfer bracket connected to the lower end of the ninth telescopic cylinder. The material transfer bracket includes a material transfer rod, which is movably disposed downward in the first material transfer channel.

[0016] Furthermore, the first feeding mechanism is connected to the left end of the first material transmission channel. The first feeding mechanism includes a first vibrating plate, a first feeding guide rail connected to the first vibrating plate, and a first linear vibrator installed at the lower end of the first feeding guide rail. A first baffle is connected to the upper end of the first feeding guide rail, and a material trough is provided in the first feeding guide rail.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This project achieves highly efficient, precise, and intelligent automated production of multi-button piano key switches through the automated design of the production line, the coordinated operation of the first and second production lines, and the collaborative control of various mechanisms. Specifically, by operating the first and second production lines in parallel, the assembly of the top cover and bottom shell can be carried out simultaneously, greatly shortening the production cycle, improving production efficiency, and meeting the needs of large-scale production. Except for the installation of the springs, which requires manual operation, the feeding, loading, and pressing processes of the top cover and bottom shell are all automated, reducing manual intervention, lowering labor intensity, and improving the accuracy and stability of production. The various loading, pressing, and clamping mechanisms ensure the installation accuracy and connection firmness of each component, improving the overall quality and performance stability of the piano key switches and reducing the defect rate. This production line can be configured with different numbers of parts according to the number of keys required for the piano key switches, enabling the efficient production of piano key switches with three or more keys, demonstrating strong flexible production capabilities. Attached Figure Description

[0019] Figure 1 This is a 3D view of the assembly line in this case.

[0020] Figure 2 This is a top view of the assembly line in this case.

[0021] Figure 3 This is a structural diagram of the first loading mechanism in this case.

[0022] Figure 4 This is a schematic diagram of the second loading mechanism in this case.

[0023] Figure 5 This is a schematic diagram of the material transfer mechanism in this case.

[0024] Figure 6 This is a structural diagram of the third loading mechanism in this case.

[0025] Figure 7 This is a schematic diagram of the pressing mechanism in this case.

[0026] Figure 8 This is a schematic diagram of the clamping mechanism in this case.

[0027] Figure 9 This is a structural diagram of the first material transfer mechanism in this case.

[0028] Figure 10 This is a structural diagram of the first feeding mechanism in this case. Detailed Implementation

[0029] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art:

[0030] For ease of description and understanding, please refer to the following descriptions related to positional relationships such as front, back, top, bottom, left, right, outside, and inside in this case. Figure 1 , Figure 2 The orientation shown.

[0031] Before assembly, a piano key switch consists of various scattered parts, including a base, a top cover, conductive copper sheets, return plates, retaining plates, springs, and rubber covers. The number of parts varies depending on the number of keys required for the piano key switch.

[0032] The focus of this project is the development of an assembly line for multi-button piano key switches, which can efficiently produce piano key switches with three or more buttons, achieving efficient mass production.

[0033] The embodiment shown in this case is a four-button piano switch, which means that four conductive copper sheets, return plates, retaining plates, springs, rubber covers and other corresponding components need to be assembled.

[0034] like Figures 1 to 10As shown, this invention discloses a multi-button piano key switch assembly production line, including a frame 100 and a first production line 200 and a second production line 300 mounted on the frame 100. The first production line 200 includes a first material conveying channel 201. This is generally a conveying structure composed of a conveyor belt, guide rails, etc., with a certain length and width to accommodate the size and conveying requirements of the cover. In specific implementation, the first material conveying channel 201 serves as the channel for the cover to move on the first production line 200, providing guidance and power for the conveying of the cover, enabling the cover to pass through each mechanism sequentially according to a predetermined process flow. This achieves continuous and stable conveying of the cover, ensuring the continuity and efficiency of production. The first production line 200 also includes a first feeding mechanism 1, a first loading mechanism 2, a second loading mechanism 3, and a material transfer mechanism 4, arranged sequentially from left to right along the first material conveying channel 201 according to the process flow. The first feeding mechanism 1 automatically feeds the top cover, organizing and conveying the scattered top covers to provide a material base for subsequent assembly processes, improving feeding efficiency and accuracy, reducing manual operation, and lowering labor intensity. The first loading mechanism 2 feeds the pallets and installs them into the top cover, completing the first step of top cover assembly, realizing automatic pallet installation, improving installation accuracy and efficiency, and ensuring the consistency of pallet installation. The second loading mechanism 3 feeds the return plates and installs them onto the top cover, further improving the top cover assembly, realizing automatic installation of the return plates, improving assembly efficiency and quality, and ensuring the accurate installation position of the return plates. The second production line 300 includes a second material transmission channel 301, which is similar to the first material transmission channel 201, also composed of conveyor belts, guide rails, etc., for the transmission of the bottom shell. As the channel for the bottom shell to move on the second production line 300, it provides guidance and power for the bottom shell's conveying, enabling the bottom shell to pass through each mechanism sequentially according to the predetermined process flow, realizing continuous and stable transmission of the bottom shell, and ensuring the continuity and efficiency of production. The second production line 300 also includes a second feeding mechanism 5, a third loading mechanism 6, a pressing mechanism 7, a manual feeding station 400, a pressing mechanism 8, and a discharge chute 9, arranged sequentially from left to right along the second material conveying channel 301 according to the process flow. The second feeding mechanism 5 automatically feeds the bottom shell, organizing and conveying the scattered bottom shells to provide a material base for subsequent assembly processes. This improves feeding efficiency and accuracy, reduces manual operation, and lowers labor intensity. The third loading mechanism 6 simultaneously feeds and installs multiple conductive copper sheets into the bottom shell, completing a key assembly step of the bottom shell. This synchronous installation of multiple conductive copper sheets greatly improves installation efficiency, ensures the positional accuracy and consistency of the conductive copper sheets, and guarantees the electrical performance of the key switch. The pressing mechanism 7 presses the top cover firmly onto the bottom shell, connecting and fixing the top cover and bottom shell together through a snap-fit ​​structure, ensuring a strong connection between the top cover and bottom shell and improving the overall structural stability of the key switch. The manual feeding station 400 provides a position for workers to install springs.The spring is tightened to ensure a tight fit between the spring and the return plate, guaranteeing the spring's installation quality and improving the key switch's operating feel and performance stability. The material transfer mechanism 4 transfers materials from the first production line 200 to the second production line 300. The material transfer mechanism 4 clamps and transfers the top cover, with the clamp and return plate installed, from the first material transfer channel 201 to the second material transfer channel 301, achieving material connection between the two production lines. This ensures the smooth transfer of the top cover from the first production line 200 to the second production line 300, enabling close coordination among all parts of the production line and improving overall production efficiency.

[0035] As described above, in specific implementation, the first production line 200 is used to assemble the return plate and the card plate onto the upper cover. Specifically, the upper cover is automatically fed by the first feeding mechanism 1, and the upper cover is conveyed to the first material transmission channel 201. The upper cover moves continuously to the right under the drive of the first material transmission channel 201. Then, the card plate is fed into the upper cover by the first loading mechanism 2 and installed into the upper cover. Then, the return plate is fed into the upper cover by the second loading mechanism 3 and installed into the upper cover. At the same time, the second production line 300 is also running synchronously. The second production line 300 is used to install the conductive copper sheet into the base. Specifically, the bottom shell is automatically fed through the second feeding mechanism 6, conveying it to the second material transfer channel 301. Similarly, driven by the second material transfer channel 301, the bottom shell continuously moves to the right. Then, the third loading mechanism simultaneously feeds and installs multiple conductive copper sheets into the bottom shell. When the bottom shell is conveyed to the position of the material transfer mechanism 6, the material transfer mechanism 4 is activated, clamping and transferring the top cover with the installed clamping plate and return plate from the first material transfer channel 201 to the second material transfer channel 301. Finally, it is closed onto the bottom shell with the installed conductive copper sheets. After being closed, the material continues to move to the right along the second material transfer channel 201. The pressing mechanism 7 presses the top cover tightly onto the bottom shell, connecting and fixing the top cover and the bottom shell together. In specific implementation, the top cover and the bottom shell are engaged by a snap-fit ​​structure. The material continues to move to the right along the second material conveying channel 301 to the manual feeding position 400, where the spring is installed manually. After the spring is installed manually, the second material conveying channel 301 continues to move to the pressing mechanism 8 to press and connect the spring. Finally, the material is automatically discharged through the discharge chute 9.

[0036] It should be further explained that, in specific implementation, this case uses multiple sensor switches to detect the presence or absence of objects and their positioning, thereby triggering the actions of various mechanisms or changing their states, thus achieving cyclical operation of the mechanisms. The relevant content here is well-known technology in the field, and the specific placement and number of each sensor switch will not be elaborated upon here. In specific implementation, those skilled in the art can adapt the sensor switches according to common knowledge in the field and the various mechanisms in this case to achieve linkage between the mechanisms.

[0037] like Figures 1-3 As shown, the first loading mechanism 2 includes a third feeding mechanism 21 and a rotary feeding device 22 disposed at the rear end of the third feeding mechanism 21. The rotary feeding device 22 includes a first fixed bracket 221, a first telescopic cylinder 222 connected to the first fixed bracket 221, a gear shaft 223 mounted on the first fixed bracket 221, a first connecting bracket 224 rotatably connected to the gear shaft 223, a second telescopic cylinder 225 mounted on the first connecting bracket 224, and a first gripper cylinder 226 connected to the second telescopic cylinder 225. A rack 227 that meshes with the gear shaft 223 is connected to the first telescopic cylinder 222.

[0038] As described above, in specific implementation, the third feeding mechanism 21 conveys the pallet to the picking position of the rotary feeding device 22; the second telescopic cylinder 225 extends, and the first gripper cylinder 226 grabs the pallet. The first telescopic cylinder 222 drives the rack 227 to rise, and the gear shaft 223 drives the first connecting bracket 224 to rotate to the pressing position. After rotating to the correct position, the second telescopic cylinder 225 retracts, pressing the pallet into the button position of the upper cover. After pressing is completed, the first telescopic cylinder 222 returns, driving the gear shaft 223 to reset, and the second telescopic cylinder 225 extends to release the pallet.

[0039] Preferably, one first gripper cylinder 226 can be selected, and the four clamping plates need to be assembled one by one. Of course, the user can also synchronously set a corresponding number of first loading mechanisms 2 according to the number of keys on the piano key switch to meet actual production needs. The first loading mechanism 2 of this invention coordinates the picking and pressing actions through the linkage of the above-mentioned components, shortens the installation time through timing optimization, and improves production efficiency. The gear shaft 223 and rack 227 drive the rotation angle, making the installation of the clamping plates more precise.

[0040] like Figure 1 , Figure 2 , Figure 4As shown, the second feeding mechanism 3 includes a fourth feeding mechanism 31 and a second feeding device 32 connected to the rear end of the fourth feeding mechanism 31. The second feeding device 32 includes a second fixed bracket 321, a third telescopic cylinder 322 mounted on the second fixed bracket 321, and a receiving platform 323 fixedly connected to the lower end of the third telescopic cylinder 322. The receiving platform 323 is slidably connected to the second fixed bracket 321 through a first sliding seat 324. The third telescopic cylinder 322 is equipped with a push rod 325 that can move with the telescopic movement of the third telescopic cylinder 322. The receiving platform 323 includes a positioning head 3231, a receiving seat 3232, and a top material channel 3233 that runs through the receiving platform 323. The push rod 325 is inserted downwards and movably disposed in the top material channel 3233.

[0041] In practice, the fourth feeding mechanism 31 oriented and arranges the return plates and then conveys them to the positioning groove of the receiving seat 3232. The third telescopic cylinder 322 drives the receiving platform 323 to descend, and the positioning head 3231 embeds into the groove on the back of the upper cover, achieving initial positioning. After the receiving platform 323 stops, the push rod 325 continues to press down, pushing the return plates out of the top material channel 3233 and pressing them into the mounting hole of the upper cover; the pressing force is controlled by the air pressure of the third telescopic cylinder 322 to ensure that the return plates fit tightly against the upper cover. The third telescopic cylinder 322 returns, and the receiving platform 323 and the push rod 325 reset, waiting for the next cycle.

[0042] As described above, the positioning head 3231 is adapted to the shape of the groove in the upper cover, ensuring that the pressing position of the return piece is aligned with the mounting hole; the guide structure of the push rod 325 and the material feeding channel 3233 ensures that the return piece is pressed in vertically, avoiding skewing or misalignment. After the receiving platform 323 quickly descends and positions itself, the push rod 325 independently presses down to complete the pressing, reducing the idle stroke time of the fourth feeding mechanism 31; the dual-axis cylinder design of the third telescopic cylinder 322 separates the positioning and pressing actions, improving the efficiency of single-station operation. The positioning slot of the receiving seat 3232 can be replaced with modules of different specifications to adapt to various sizes of return pieces; the stroke of the push rod 325 is adjustable, compatible with the pressing requirements of return pieces of different thicknesses. In this case, there is one second loading mechanism 3, and the four return pieces need to be assembled one by one. Of course, users can also set up a corresponding number of second loading mechanisms 3 according to the number of keys on the piano key switch to meet actual production needs.

[0043] like Figure 1 , Figure 2 , Figure 5As shown, the material transfer mechanism 4 includes a first motor 41, a receiving guide rail 42 rotatably connected to the first motor 41 via a rotating component 45, a first pressing cylinder 43 connected to the front end of the receiving guide rail 42, and a first pushing cylinder 44 connected to the lower end of the receiving guide rail 42. The receiving guide rail 42 is connected to the right end of the first material transmission channel 201.

[0044] In practice, the receiving guide rail 42 is aligned with the end of the first material conveying channel 201; the upper cover is conveyed by the conveying channel 201 into the groove of the receiving guide rail 42. The first lifting cylinder 44 extends upward to lift the material, and the first pressing cylinder 43 moves to press the material into the groove to prevent it from coming out during rotation; the first lifting cylinder 44 remains in the retracted state, and the upper cover is stably placed in the guide rail groove. The first motor 41 drives the receiving guide rail 42 to rotate, moving the upper cover above the second material conveying channel 301; the first pressing cylinder 43 returns and releases, placing the material in the second material conveying channel 301, ready for the next cycle.

[0045] As described above, the receiving guide rail 42 is used to stably receive materials and provides a base for material transfer. Both the first clamping cylinder 43 and the first ejecting cylinder 44 can extend into the receiving guide rail 42 to clamp and eject the internal materials respectively, preventing materials from slipping out of the guide rail during tipping. The material transfer mechanism 4 in this invention, through mechanical structure innovation and motion control optimization, achieves safe and efficient transfer of the multi-button piano key switch cover, providing key technical support for collaborative operation of dual production lines.

[0046] like Figure 1 , Figure 2 , Figure 6 As shown, the third loading mechanism 6 of this case includes a fifth feeding mechanism 61 and a third feeding device 62 connected to the left end of the fifth feeding mechanism 61. The third feeding device 62 includes a third fixed bracket 621, a first linear guide rail 622 mounted on the upper end of the third fixed bracket 621, a fourth telescopic cylinder 624 slidably connected to the first linear guide rail 622 via a second slide block 623, a fifth telescopic cylinder 625 connected to the second slide block 623, and a second gripper cylinder 626 connected to the lower end of the fourth telescopic cylinder 624.

[0047] In practical implementation, to improve efficiency, and in the embodiment shown in this case, a four-button piano key switch is used. Preferably, four second gripper cylinders 626 are provided. The fifth feeding mechanism 61 oriented and transports the conductive copper sheets to the picking position of the third feeding device 62. The fourth telescopic cylinder 624 extends, and the four sets of second gripper cylinders 626 simultaneously grab the copper sheets. The fifth telescopic cylinder 625 drives the second slide block 623 to move along the first linear guide rail 622, so that the second gripper cylinders 626 are aligned with the button positions on the bottom shell. The fourth telescopic cylinder 624 retracts, and the second gripper cylinders 626 press the copper sheets into the pin slots on the bottom shell, completing the installation. The fifth telescopic cylinder 625 returns to the initial position, and the fourth telescopic cylinder 624 extends to release the copper sheets, waiting for the next cycle.

[0048] As described above, the third loading mechanism 6 in this invention overcomes the efficiency bottleneck of traditional single-claw sequential pressing by simultaneously operating four sets of second-claw cylinders 626. Utilizing the precise cooperation between the second slide 623 and the first linear guide 622, rapid and accurate positioning of multi-button copper sheets is achieved. In specific implementation, the chucks of the second-claw cylinders 626 can be quickly replaced with their corresponding structures to support the production of copper sheets of various specifications, reducing changeover time. Through mechanical structural innovation and motion control optimization, the third loading mechanism 6 achieves efficient and precise installation of conductive copper sheets for multi-button piano key switches.

[0049] Reference Figure 1 , Figure 2 , Figure 7 As shown, the pressing mechanism 7 includes a fourth fixed bracket 71 and a sixth telescopic cylinder 72 mounted on the fourth fixed bracket 71. The lower end of the sixth telescopic cylinder 72 is connected to a first pressure plate 73.

[0050] In practice, the material transfer mechanism 4 places the upper cover on the bottom shell, and the locking structure of the upper cover and the bottom shell is initially aligned. The sixth telescopic cylinder 72 drives the first pressure plate 73 to press down vertically. The first pressure plate 73 cooperates with the top surface of the upper cover, applying a uniform pressing force. The pressing force is controlled by air pressure to ensure that the locking structure is fully engaged. After pressing is completed, the sixth telescopic cylinder 72 returns, the pressure plate 73 disengages from the upper cover, and the bottom shell and the upper cover are fixed together. The finished product continues to be transferred to the subsequent workstation along the second material transfer channel 301.

[0051] As described above, the material transfer mechanism 4 in this case completes the synchronous pressing of multiple snap-fit ​​structures through a single action, simplifying the complexity of the mechanism. The pressure plate 73 improves the pressing accuracy and reliability of the upper cover and the bottom shell. In specific implementation, the pressure plate 73 can be quickly replaced to support the pressing needs of multiple models of piano key switches, reducing changeover time and increasing the versatility of the overall assembly line. Through mechanical structure optimization and pneumatic control coordination, the material transfer mechanism 4 achieves efficient and reliable pressing of the upper cover and the bottom shell of multi-button piano key switches, providing key technical support for automated production lines.

[0052] Reference Figure 1 , Figure 2 , Figure 8 As shown, the clamping mechanism 8 includes a fifth fixed bracket 81, a second linear guide rail 82 mounted on the fifth fixed bracket 81, a seventh telescopic cylinder 84 slidably connected to the second linear guide rail 82 via a third slide block 83, and an eighth telescopic cylinder 85 connected to the third slide block 83. The lower end of the seventh telescopic cylinder 84 is connected to a second pressure plate 86.

[0053] In practice, based on the position and size requirements of the product to be pressed, the extension and retraction of the eighth telescopic cylinder 85 drives the third slide 83 to move horizontally along the second linear guide rail 82, adjusting the second pressure plate 86 to a suitable horizontal position so that it aligns with the spring to be pressed. The seventh telescopic cylinder 84 is then activated, extending its piston rod and moving the second pressure plate 86 vertically downwards until it contacts the product surface, applying a certain clamping force to complete the spring pressing. After the pressing operation is complete, the piston rod of the seventh telescopic cylinder 84 is retracted, moving the second pressure plate 86 vertically upwards to release the spring clamping. Then, as needed, the extension and retraction of the eighth telescopic cylinder 85 is controlled to move the third slide 83 and the second pressure plate 86 back to their initial positions, preparing for the next pressing operation.

[0054] As described above, the clamping mechanism 8 of this invention, through the high-precision guidance of the second linear guide 82 and the horizontal position adjustment function of the eighth telescopic cylinder 85, enables the second pressure plate 86 to be accurately aligned with the part to be clamped. Combined with the vertical movement of the seventh telescopic cylinder 84, precise clamping of the spring is achieved, improving the assembly accuracy of the product. The horizontal movement of the eighth telescopic cylinder 85 and the vertical extension and retraction of the seventh telescopic cylinder 84 allow the clamping mechanism 8 to adapt to the clamping requirements of products of different sizes, shapes, and positions, increasing the flexibility and versatility of the mechanism. The stable support structure of the fifth fixed bracket 81 and the smooth guiding effect of the second linear guide 82 further enhance its effectiveness. Through the synergy of dual cylinders, the guidance of linear guides, and the modular design, the clamping mechanism 8 of this invention achieves high-precision clamping and rapid changeover at the spring mounting station, providing a reliable end-effector for the automated assembly of multi-button piano key switches.

[0055] like Figure 1 , Figure 2 , Figure 9 As shown, the first production line 200 is located at the front end of the second production line 300. The first production line 200 also includes a first material transfer mechanism 91 located between the first feeding mechanism 1 and the first loading mechanism 2, and a second material transfer mechanism 92 located between the second loading mechanism 3 and the material transfer mechanism 4. The second production line 300 also includes a third material transfer mechanism 93 located at the lower end of the second material transmission channel 301. The third material transfer mechanism 93 is located between the third loading mechanism 6 and the pressing mechanism 7.

[0056] In specific implementation, the first material transfer mechanism 91 is used for material transfer between the first feeding mechanism 2 and the first loading mechanism 3, and also serves as a positioning mechanism to facilitate loading by the first loading mechanism 2. The second material transfer mechanism 92 is used for material transfer between the second loading mechanism 3 and the material transfer mechanism 4, and also serves as a positioning mechanism to facilitate loading by the second loading mechanism 3 and receiving by the material transfer mechanism 4. The third material transfer mechanism 93 is used for material transfer between the second feeding mechanism 5, the third loading mechanism 6, and the pressing mechanism 7, and also serves as a positioning mechanism to fix the position for loading by the third loading mechanism 6 and for pressing by the pressing mechanism 7.

[0057] As described above, the first transfer mechanism 91, the second transfer mechanism 92, and the third transfer mechanism 93 in this case constitute a transfer system. Through multi-mechanism collaboration and modular design, it achieves efficient transfer and precise positioning of materials for multi-button piano key switches, providing key technical support for parallel operation of dual production lines. The transfer system improves the accuracy and stability of material transfer between the upper cover and the bottom shell in the first material transfer channel 201 and the second material transfer channel 301, respectively, overcoming the limitations of traditional single-rod long-distance transfer. Segmented control enhances positioning accuracy and transfer efficiency.

[0058] In practical implementation, if there are many piano key switches to be assembled, and the first production line 200 and the second production line 300 are relatively long, the first material transfer channel 201 and the second material transfer channel 301 will also become longer. In this case, the user needs to adapt the various mechanisms to meet the actual needs. Specifically, for the system, the user can choose to set up more material transfer mechanisms to assist in material transfer. Alternatively, cylinders can be added to assist in material movement. It should be noted that, to further improve material transfer efficiency, multiple material transfer cylinders are installed in both the first material transfer channel 201 and the second material transfer channel 301 in this design.

[0059] Furthermore, continue to refer to Figure 1 , Figure 2 , Figure 9As shown, the first material transfer mechanism 91 includes a linear module 911, a ninth telescopic cylinder 912 movably connected to the front end of the linear module 911, and a material transfer bracket 913 connected to the lower end of the ninth telescopic cylinder 912. The material transfer bracket 913 includes a material transfer rod 9131, which is movably disposed downward in the first material transfer channel 201.

[0060] In practice, the linear module 911 is in its initial position, the piston rod of the ninth telescopic cylinder 912 is in the retracted state, and the transfer rod 9131 is located above the first material transmission channel 201. The piston rod of the ninth telescopic cylinder 912 extends, driving the transfer rod 9131 to descend into the first material transmission channel 201 and abut against the material. Then, the linear module 911 moves to the right, conveying the material to the designated position of the first loading mechanism 2. The linear module 911 and the ninth telescopic cylinder 912 stop operating, fixing the upper cover to the corresponding position in the first material transmission channel 201, allowing the first loading mechanism 2 to mount the clamping plate onto the upper cover. After the first loading mechanism 2 completes its work, the ninth telescopic cylinder 912 resets and retracts, releasing the material. The linear module 911 continues to move to the right, conveying the material towards the second loading mechanism 3. After conveying to the set point, the linear module 911 resets to the left, driving the ninth telescopic cylinder 912 and the transfer bracket 913 to reset as well.

[0061] Linear module 911 is a well-known technology in the field. Currently, widely used linear modules 911 can be divided into three types: synchronous belt type, ball screw type, and linear motor type, which will not be elaborated further here. Unless otherwise specified, the linear module 911 mentioned in this case is preferably a linear motor type linear module 911, which generally includes a motor, a lead screw, and a guide rod. This type of linear module has a simple structure, high acceleration, fast response, high precision, and facilitates long-stroke movement.

[0062] Reference Figure 1 , Figure 2 , Figure 10 As shown, the first feeding mechanism 1 is connected to the left end of the first material transmission channel 201. The first feeding mechanism 1 includes a first vibrating plate, a first feeding guide rail 11 connected to the first vibrating plate, and a first linear vibrator 12 installed at the lower end of the first feeding guide rail 11. A first baffle 13 is connected to the upper end of the first feeding guide rail 11, and a material trough 111 is provided in the first feeding guide rail 11.

[0063] The first vibratory feeder (not shown in the figure) in this invention can be a common vibratory feeder in the field. It is not the focus of this utility model, but is only described in detail for the convenience of referring to the drawings. Users can select a suitable first vibratory feeder according to their actual situation. As the starting device for feeding the top cover, the first vibratory feeder uses its own vibration function to orient the disordered top cover, so that it can enter the first feeding guide rail 11 in a certain direction and posture, realizing the automatic orientation of the top cover, providing orderly materials for subsequent conveying and assembly, improving the efficiency and accuracy of feeding, and avoiding the tedious process of manual sorting.

[0064] In specific implementation, the first linear vibrator 12 is used to receive the top cover coming out of the first vibrating plate, providing a conveying channel for the top cover so that it can slide along the first feeding guide rail 11. The first linear vibrator 12 is used to vibrate and feed the top cover in the first feeding guide rail 11 until the top cover is conveyed to the first loading mechanism 2. The first feeding guide rail 11 is configured to adapt to the shape of the top cover so that the top cover can slide smoothly in it. The first baffle 13 can effectively prevent the top cover from shifting or falling out of the first feeding guide rail 11 during the movement driven by the first linear vibrator 12, ensuring the stability of the top cover transportation.

[0065] The first material transfer channel 201 of this invention includes a base plate, side plates connected to both sides of the base plate, and a second baffle connected to the upper end of one of the side plates. A feeding channel is formed between the base plate and the two side plates. The second baffle can effectively prevent displacement or detachment from the guide rail during the movement of the cover in the feeding channel driven by the material transfer mechanism, ensuring the stability of the cover transportation.

[0066] It should be noted that some mechanisms not mentioned in the specific embodiments of this case are roughly the same in structure and principle as the corresponding mechanisms mentioned earlier in the specific embodiments of this case, only installed in different processes. For these mechanisms not specifically described in this case, those skilled in the art can refer to the descriptions of their corresponding mechanisms mentioned earlier in this case. Those skilled in the art can adapt the design of the production line of this case accordingly, and will not elaborate further here. Specifically, the mechanisms that can be designed by reference are as follows: the second material transfer mechanism 92 and the third material transfer mechanism 93 are set with reference to the first material transfer mechanism 91. For ease of implementation, the second material transfer mechanism 92 is driven by a cylinder. The second feeding mechanism 5, the third feeding mechanism 21, the fourth feeding mechanism 31, and the fifth loading mechanism 61 are set with reference to the first feeding mechanism 1. The second material transmission channel 301 is set with reference to the first material transmission channel 201.

[0067] It should be noted that the description of the number of corresponding mechanisms, components, etc. added to maximize the production efficiency of the equipment in this case is only a preferred example. In actual operation, users can choose to set an appropriate number according to their needs, and are not limited to the number mentioned in this application.

[0068] As stated above, this case protects a multi-button piano key switch assembly line, and all technical solutions that are the same as or similar to this case should be considered to fall within the scope of protection of this case.

Claims

1. A multi-button piano key switch assembly line, comprising a frame (100) and a first production line (200) and a second production line (300) disposed on the frame (100), characterized in that: The first production line (200) includes a first material conveying channel (201), and the first production line (200) also includes a first feeding mechanism (1), a first loading mechanism (2), a second loading mechanism (3) and a material transfer mechanism (4) arranged sequentially from left to right along the first material conveying channel (201) according to the process flow; the second production line (300) includes a second material conveying channel (301), and the second production line (300) also includes a second feeding mechanism (5), a third loading mechanism (6), a pressing mechanism (7), a manual feeding position (400), a pressing mechanism (8) and a discharge trough (9) arranged sequentially from left to right along the second material conveying channel (301) according to the process flow; the material transfer mechanism (4) is used to transfer the material on the first production line (200) to the second production line (300).

2. The multi-button piano key switch assembly line according to claim 1, characterized in that: The first loading mechanism (2) includes a third loading mechanism (21) and a rotary loading device (22) disposed at the rear end of the third loading mechanism (21). The rotary loading device (22) includes a first fixed bracket (221), a first telescopic cylinder (222) connected to the first fixed bracket (221), a gear shaft (223) mounted on the first fixed bracket (221), a first connecting bracket (224) rotatably connected to the gear shaft (223), a second telescopic cylinder (225) mounted on the first connecting bracket (224), and a first gripper cylinder (226) connected to the second telescopic cylinder (225). A rack (227) meshing with the gear shaft (223) is connected to the first telescopic cylinder (222).

3. The multi-button piano key switch assembly line according to claim 1, characterized in that: The second loading mechanism (3) includes a fourth loading mechanism (31) and a second loading device (32) connected to the rear end of the fourth loading mechanism (31). The second loading device (32) includes a second fixed bracket (321), a third telescopic cylinder (322) mounted on the second fixed bracket (321), and a receiving platform (323) fixedly connected to the lower end of the third telescopic cylinder (322). The receiving platform (323) is slidably connected to the second fixed bracket (321) through a first slide (324). The third telescopic cylinder (322) is equipped with a push rod (325) that can move with the telescopic movement of the third telescopic cylinder (322). The receiving platform (323) includes a positioning head (3231), a receiving seat (3232), and a top material channel (3233) that runs through the receiving platform (323) from top to bottom. The push rod (325) is inserted downward into the top material channel (3233).

4. The multi-button piano key switch assembly line according to claim 1, characterized in that: The material transfer mechanism (4) includes a first motor (41), a receiving guide rail (42) rotatably connected to the first motor (41) via a rotating part (45), a first pressing cylinder (43) connected to the front end of the receiving guide rail (42), and a first top-feeding cylinder (44) connected to the lower end of the receiving guide rail (42). The receiving guide rail (42) is connected to the right end of the first material transmission channel (201).

5. The multi-button piano key switch assembly line according to claim 1, characterized in that: The third loading mechanism (6) includes a fifth feeding mechanism (61) and a third feeding device (62) connected to the left end of the fifth feeding mechanism (61). The third feeding device (62) includes a third fixed bracket (621), a first linear guide rail (622) installed on the upper end of the third fixed bracket (621), a fourth telescopic cylinder (624) slidably connected to the first linear guide rail (622) via a second slide (623), a fifth telescopic cylinder (625) connected to the second slide (623), and a second gripper cylinder (626) connected to the lower end of the fourth telescopic cylinder (624).

6. The multi-button piano key switch assembly line according to claim 1, characterized in that: The pressing mechanism (7) includes a fourth fixed bracket (71) and a sixth telescopic cylinder (72) mounted on the fourth fixed bracket (71). The lower end of the sixth telescopic cylinder (72) is connected to a first pressure plate (73).

7. The multi-button piano key switch assembly line according to claim 1, characterized in that: The pressing mechanism (8) includes a fifth fixed bracket (81), a second linear guide rail (82) mounted on the fifth fixed bracket (81), a seventh telescopic cylinder (84) slidably connected to the second linear guide rail (82) via a third slide (83), and an eighth telescopic cylinder (85) connected to the third slide (83). The lower end of the seventh telescopic cylinder (84) is connected to a second pressure plate (86).

8. A multi-button piano key switch assembly line according to any one of claims 1-7, characterized in that: The first production line (200) is located at the front end of the second production line (300). The first production line (200) also includes a first material transfer mechanism (91) located between the first feeding mechanism (1) and the first loading mechanism (2), and a second material transfer mechanism (92) located between the second loading mechanism (3) and the material transfer mechanism (4). The second production line (300) also includes a third material transfer mechanism (93) located at the lower end of the second material transmission channel (301). The third material transfer mechanism (93) is located between the third loading mechanism (6) and the pressing mechanism (7).

9. The multi-button piano key switch assembly line according to claim 8, characterized in that: The first material transfer mechanism (91) includes a linear module (911), a ninth telescopic cylinder (912) movably connected to the front end of the linear module (911), and a material transfer bracket (913) connected to the lower end of the ninth telescopic cylinder (912). The material transfer bracket (913) includes a material transfer rod (9131), which is movably disposed downward in the first material transfer channel (201).

10. A multi-button piano key switch assembly line according to claim 9, characterized in that: The first feeding mechanism (1) is connected to the left end of the first material transmission channel (201). The first feeding mechanism (1) includes a first vibrating plate, a first feeding guide rail (11) connected to the first vibrating plate, and a first linear vibrator (12) installed at the lower end of the first feeding guide rail (11). A first baffle (13) is connected to the upper end of the first feeding guide rail (11), and a material trough (111) is provided in the first feeding guide rail (11).

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