A distributing device for keyboard scissors leg production

Abstract

This invention relates to the field of keyboard scissor-switch pin production, specifically a material distribution device for keyboard scissor-switch pin production. The device includes a support housing, a material distribution box fixed to the top of the support housing, a pneumatic material distribution mechanism installed inside the material distribution box on the top of the support housing, a defective product discharge pipe fixed to the inner wall of the material distribution box, and a good product discharge pipe fixed to one side of the defective product discharge pipe on the inner wall of the material distribution box. Connecting hoses are installed on the outer walls of the ends of both the defective and good product discharge pipes. A discharge cylinder is installed on the inner wall of the bottom of the connecting hose. A uniform material distribution assembly is provided on the side wall of the support housing. This invention, through a uniform material distribution assembly composed of a sliding bar, connecting bar, slide rail, round rod, rotating plate, and servo motor, relies on eccentric transmission to drive the discharge cylinder to reciprocate, changing the discharge point. This effectively solves the problems of single-point accumulation of keyboard scissor-switch pins and low space utilization in the collection box caused by traditional fixed discharge pipes.

Description

Technical Field

[0001] This invention relates to the field of keyboard scissor-switch pin manufacturing, specifically a material distribution device for keyboard scissor-switch pin manufacturing. Background Technology

[0002] Keyboard scissor-switch switches are core precision support components for membrane keyboards and laptop keyboards. They consist of inner and outer scissor hinges forming an opening and closing structure, which is fitted between the keycaps and the rubber membrane. They offer advantages such as ultra-thin and lightweight design, even force distribution, stable rebound, and quiet typing. They are key components that ensure the key feel, reset accuracy, and stability of the keyboard. Due to their small size and delicate structure, and the stringent requirements for key consistency and yield rate in end products, the material sorting and selection process during the production of scissor-switch switches directly affects the overall production quality and mass production pass rate of the finished keyboard.

[0003] After the keyboard scissor-switch feet are injection molded, formed, and cut, they need to be sorted into good and defective products by automated sorting equipment. The standard sorting process is as follows: the formed workpieces are transferred to the inspection station by a conveyor mechanism. The workpieces are inspected by vision and dimensional inspection equipment to check their external dimensions, hinge accuracy, appearance integrity, and other indicators. The system determines the good and defective product attributes of the workpieces based on the inspection results. Then, the sorting execution mechanism guides the different types of workpieces into the corresponding sorting channels to achieve the classification and collection of good and defective products. This provides a basis for the subsequent assembly of good products and the rework and scrapping of defective products. At present, the mainstream sorting method in the industry is pneumatic sorting. Relying on the detection system signal, the pneumatic blowing mechanism generates high-pressure airflow to blow the scissor-switch foot workpieces on the station into the corresponding sorting pipe. After being guided by the pipeline, they fall into the collection box below, completing the automated sorting operation.

[0004] Existing material distribution equipment generally uses a fixed structure for the material distribution pipe, and the discharge position and orientation cannot be adjusted. This causes all scissor-foot workpieces to fall into a single position in the collection box. Because the scissor-foot workpieces are small and lightweight, they are prone to rapid accumulation and bulging in a localized area. This results in a situation where most of the box space is empty or not completely filled, but the stacked workpieces have already reached the top of the box. This defect not only significantly reduces the space utilization of the collection box, but also requires workers to shake the box periodically to level it, making it impractical. Therefore, a material distribution device for keyboard scissor-foot production is proposed to address the above problems. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a material distribution device for the production of keyboard scissor feet.

[0006] The technical solution adopted by this invention to solve its technical problem is: a material distribution device for keyboard scissor-switch pin production, comprising a support box, a material distribution box fixedly connected to the top side of the support box, a pneumatic material distribution mechanism installed inside the material distribution box on the top side of the support box, a defective product discharge pipe fixedly connected to the inner wall of the material distribution box, a good product discharge pipe fixedly connected to one side of the defective product discharge pipe on the inner wall of the material distribution box, connecting hoses installed on the outer walls of the ends of both the defective product discharge pipe and the good product discharge pipe, a discharge cylinder installed on the inner wall of the bottom of the connecting hose, a uniform material distribution component provided on the side wall of the support box, the uniform material distribution component including a sliding strip, the sliding strip slidably connected to the side wall of the support box, the side wall of the sliding strip fixedly connected to the outer wall of the discharge cylinder, a connecting strip fixedly connected to the side wall of the sliding strip, a slide rail fixedly connected to the end of the connecting strip, a round rod slidingly mounted in the middle of the slide rail, a servo motor fixedly connected to the side wall of the support box, a rotating plate installed on the end of the servo motor, and the round rod located at the eccentric end of the rotating plate.

[0007] Preferably, a rectangular groove is provided on the end side of the rotating plate, a movable block is slidably connected to the inner wall of the rectangular groove, the end side of the round rod is rotatably connected to the side wall of the movable block, a threaded rod is rotatably connected to the inner wall of the rotating plate, and the outer wall of the threaded rod is threadedly connected to the inner wall of the movable block.

[0008] Preferably, a support plate is fixed to the side wall at the bottom of the support box, a central baffle is fixed to the top side of the middle part of the support plate, and an outer baffle is fixed to the top side of the edge of the support plate. Two sets of outer baffles are provided, and the two sets of outer baffles are symmetrically arranged with the center line of the support plate as the axis of symmetry.

[0009] Preferably, the outer walls of both ends of the connecting hose are fitted with cable ties, and the outer walls of the ends of the defective product discharge pipe and the good product discharge pipe are provided with limiting grooves, and the cable ties are retracted and locked inside the limiting grooves.

[0010] Preferably, the side wall of the support box is provided with a sliding groove, and a rotating block is rotatably connected to the end of the sliding bar, and the rotating block rolls on the inner wall of the sliding groove.

[0011] Preferably, the limiting groove is provided in multiple sets, and the multiple sets of limiting grooves are opened on the outer wall of the top of the discharge cylinder, and another set of cable ties are retracted and clamped to the inner wall of another set of limiting grooves.

[0012] Preferably, there are two sets of sliding bars, connecting bars, and rotating blocks, and the two sets of sliding bars, connecting bars, and rotating blocks are symmetrically arranged with the center line of the slide rail as the axis of symmetry.

[0013] The advantages of this invention are: This invention utilizes a uniform material discharge assembly composed of a sliding bar, connecting bar, slide rail, round rod, rotating plate, and servo motor. By relying on eccentric transmission, the discharge cylinder reciprocates and oscillates, changing the discharge point. This effectively solves the problems of single-point accumulation of keyboard scissor feet and low space utilization in collection boxes caused by traditional fixed discharge pipes. At the same time, the position of the moving block can be adjusted by the threaded rod to change the swing stroke of the discharge cylinder, making it suitable for collection boxes of different sizes and thus having a wider range of applications.

[0014] This invention improves the connection strength of the pipeline by using cable ties and limiting grooves to lock the two ends of the connecting hose, and prevents loosening and leakage when the discharge cylinder swings. The sliding groove and rotating block reduce the wear of the components. The support plate, outer baffle and middle baffle limit and protect the collection box. The overall operation stability and practicality are greatly improved, and the amount of manual material handling is reduced. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall device of the present invention; Figure 2 This is a schematic diagram of the disassembled cross-sectional structure of the support box and support plate of the present invention; Figure 3 This is a schematic diagram of the disassembled cross-sectional structure of the defective product discharge pipe and connecting hose of the present invention; Figure 4 This is a schematic diagram showing the disassembled structure of the rotating plate and the discharge cylinder of the present invention; Figure 5 For the present invention Figure 3 An enlarged structural diagram of region A; Figure 6 For the present invention Figure 3 A magnified structural diagram of region B.

[0017] In the diagram: 1. Support box; 2. Distribution box; 3. Defective product discharge pipe; 4. Good product discharge pipe; 5. Connecting hose; 6. Rotating plate; 61. Sliding bar; 62. Connecting bar; 63. Slide rail; 64. Round rod; 65. Threaded rod; 66. Servo motor; 67. Moving block; 68. Rotating block; 69. Rectangular groove; 7. Outer baffle; 8. Support plate; 9. Middle baffle; 10. Pneumatic distribution mechanism; 11. Discharge cylinder; 12. Slide groove; 13. Cable tie; 14. Limiting groove. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail. This application discloses a material distribution device for keyboard scissor-switch pin production: Reference Figures 1-5 A material distribution device for keyboard scissor-switch pin production includes a support box 1, a material distribution box 2 fixedly connected to the top side of the support box 1, a pneumatic material distribution mechanism 10 installed inside the material distribution box 2 on the top side of the support box 1, a defective product discharge pipe 3 fixedly connected to the inner wall of the material distribution box 2, a good product discharge pipe 4 fixedly connected to one side of the defective product discharge pipe 3 on the inner wall of the material distribution box 2, connecting hoses 5 installed on the outer walls of the ends of both the defective product discharge pipe 3 and the good product discharge pipe 4, a discharge cylinder 11 installed on the inner wall of the bottom of the connecting hose 5, and a uniform material distribution component provided on the side wall of the support box 1. The uniform material distribution component includes a sliding strip 61, which is slidably connected to the side wall of the support box 1. The side wall of the sliding strip 61 is fixedly connected to the outer wall of the discharge cylinder 11, and a connecting strip 62 is fixedly connected to the side wall of the sliding strip 61. A slide rail 63 is fixedly connected to the end of the connecting strip 62. A circular rod 64 is mounted on the side wall of the support box 1, and a servo motor 66 is fixedly connected to it. A rotating plate 6 is installed on the end of the servo motor 66. The circular rod 64 is set at the eccentric position on the end of the rotating plate 6. During operation, the pneumatic material distribution mechanism 10 completes the sorting of good and bad products of the keyboard scissor feet. Good products are sent into the good product discharge pipe 4 and bad products are sent into the bad product discharge pipe 3. The material flows through the pipe and the connecting hose 5 and is discharged from the discharge cylinder 11. At the same time, the servo motor 66 drives the rotating plate 6 to rotate continuously. The circular rod 64 at the eccentric position follows the rotating plate 6 to make a circular motion. The circular rod 64 slides back and forth inside the slide rail 63, which in turn drives the connecting bar 62 and the sliding bar 61 to move horizontally back and forth along the side wall of the support box 1. The sliding bar 61 synchronously drives the discharge cylinder 11 to swing left and right, changing the material discharge position, so that the scissor feet are evenly scattered and reducing the risk of material accumulation at a single point.

[0020] Reference Figure 3 and Figure 5A rectangular groove 69 is provided on the end side of the rotating plate 6. A movable block 67 is slidably connected to the inner wall of the rectangular groove 69. The end side of the round rod 64 is rotatably connected to the side wall of the movable block 67. A threaded rod 65 is rotatably connected to the inner wall of the rotating plate 6. The outer wall of the threaded rod 65 is threadedly connected to the inner wall of the movable block 67. During operation, the operator rotates the threaded rod 65, which drives the movable block 67 to slide inside the rectangular groove 69 by means of threaded transmission. This adjusts the eccentricity of the movable block 67 on the rotating plate 6. After the eccentricity changes, the rotation radius of the round rod 64 changes accordingly. Finally, the reciprocating swing stroke of the sliding bar 61 and the discharge cylinder 11 is adjusted. The discharge swing range can be flexibly adjusted according to the size of the collection box and the material accumulation, adapting to different usage scenarios.

[0021] Reference Figures 1-2 A support plate 8 is fixed to the side wall at the bottom of the support box 1. A middle baffle 9 is fixed to the top side of the middle part of the support plate 8. An outer baffle 7 is fixed to the top side of the edge of the support plate 8. There are two sets of outer baffles 7, and the two sets of outer baffles 7 are symmetrically arranged with the center line of the support plate 8 as the axis of symmetry. When working, the collection box is placed above the support plate 8. The two sets of outer baffles 7 limit and block the collection box from the left and right sides. The middle baffle 9 plays a role in separation and positioning in the middle, which reduces the risk of materials falling out of the collection box and falling outside the corresponding collection box when falling, and improves practicality.

[0022] Reference Figures 3-4 and Figure 6 The outer walls of both ends of the connecting hose 5 are fitted with cable ties 13. The outer walls of the ends of the defective product discharge pipe 3 and the good product discharge pipe 4 are provided with limiting grooves 14. The cable ties 13 are retracted and locked inside the limiting grooves 14. There are multiple sets of limiting grooves 14, and multiple sets of limiting grooves 14 are opened on the outer wall of the top of the discharge cylinder 11. Another set of cable ties 13 is retracted and locked inside the inner wall of another set of limiting grooves 14. During operation, the upper end of the connecting hose 5 is connected to the ends of the defective product discharge pipe 3 and the good product discharge pipe 4, and the lower end is connected to the top of the discharge cylinder 11. The cable ties 13 are tightened to lock into the corresponding limiting grooves 14. The locking effect of the cable ties 13 is used to strengthen the connection parts of the two ends of the connecting hose 5. When the discharge cylinder 11 continues to swing back and forth, the risk of the connecting hose 5 loosening, shifting, and leaking is reduced.

[0023] Reference Figure 5 The support box 1 has a sliding groove 12 on its side wall. The sliding bar 61 is rotatably connected to a rotating block 68. The rotating block 68 rolls on the inner wall of the sliding groove 12. During operation, when the sliding bar 61 moves horizontally and reciprocates, the rotating block 68 at its end rolls against the inner wall of the sliding groove 12, converting sliding friction into rolling friction. This greatly reduces the resistance and wear of the sliding bar 61 during movement, making the overall transmission operation smoother and more stable. At the same time, the sliding groove 12 guides the rotating block 68 and the sliding bar 61, restricts the movement trajectory, and ensures the stability of the swing direction of the discharge cylinder 11.

[0024] Reference Figures 1-4 There are two sets of sliding bars 61, connecting bars 62, and rotating blocks 68. The two sets of sliding bars 61, connecting bars 62, and rotating blocks 68 are symmetrically arranged with the center line of the slide rail 63 as the axis of symmetry. During operation, the two sets of symmetrically arranged sliding bars 61, connecting bars 62 and rotating blocks 68 move synchronously and can make the materials discharged from the defective product discharge pipe 3 and the good product discharge pipe 4 discharge synchronously and evenly, thus improving practicality.

[0025] Working principle: When this device is running, the keyboard scissor foot workpiece enters the material distribution box 2. The pneumatic material distribution mechanism 10 installed on the top of the support box 1 completes the good and bad product detection and sorting operation. Good products are introduced into the good product discharge pipe 4 and bad products are introduced into the bad product discharge pipe 3. The workpiece is then transported to the discharge cylinder 11 after passing through the connecting hose 5 to complete the discharge.

[0026] The servo motor 66 on the side wall of the supporting box 1 drives the rotating plate 6 to rotate continuously. The round rod 64 located at the eccentric position of the rotating plate 6 moves in a circular motion. The round rod 64 slides back and forth in the slide rail 63 at the end of the connecting bar 62, thereby driving the connecting bar 62 and the sliding bar 61 to move horizontally back and forth along the side wall of the supporting box 1. The sliding bar 61 synchronously drives the discharge cylinder 11 to swing left and right, changing the workpiece discharge position and achieving uniform material discharge.

[0027] The operator can rotate the threaded rod 65, which drives the moving block 67 to slide in the rectangular groove 69 of the rotating plate 6 through the threaded transmission, thereby adjusting the eccentric rotation radius of the round rod 64, thus changing the reciprocating swing stroke of the discharge cylinder 11 to adapt to different specifications of collection boxes.

[0028] The support plate 8 fixed at the bottom of the support box 1 is equipped with an outer baffle 7 and a middle baffle 9, which can position and limit the collection box placed on the support plate 8 to prevent the workpiece from falling out of the box. The two ends of the connecting hose 5 are fastened by cable ties 13 into the corresponding limiting grooves 14 to prevent the connecting hose 5 from loosening and leaking material during the swing of the discharge cylinder 11. The rotating block 68 at the end of the sliding bar 61 rolls in the sliding groove 12 on the side wall of the support box 1, converting sliding friction into rolling friction, ensuring smooth movement of the sliding bar 61. The two sets of symmetrically arranged sliding bars 61, connecting bars 62 and rotating blocks 68 operate synchronously, so that both good and defective materials can be discharged evenly.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A material distributing device for keyboard scissor foot production, comprising a supporting box (1), characterized in that: A material distribution box (2) is fixedly connected to the top side of the support box (1). A pneumatic material distribution mechanism (10) is installed inside the material distribution box (2) on the top side of the support box (1). A defective product discharge pipe (3) is fixedly connected to the inner wall of the material distribution box (2). A good product discharge pipe (4) is fixedly connected to one side of the defective product discharge pipe (3) on the inner wall of the material distribution box (2). A connecting hose (5) is installed on the outer wall of the ends of both the defective product discharge pipe (3) and the good product discharge pipe (4). A discharge cylinder (11) is installed on the inner wall of the bottom of the connecting hose (5). A uniform material discharge assembly is provided on the side wall of the support box (1). The uniform material discharge assembly includes a sliding bar (61), which is slidably connected to the side wall of the support box (1). The side wall of the sliding bar (61) is fixed to the outer wall of the discharge cylinder (11). A connecting bar (62) is fixed to the side wall of the sliding bar (61). A slide rail (63) is fixed to the end of the connecting bar (62). A round rod (64) slides in the middle of the slide rail (63). A servo motor (66) is fixed to the side wall of the support box (1). A rotating plate (6) is installed on the end of the servo motor (66). The round rod (64) is located at the eccentric end of the rotating plate (6).

2. The device according to claim 1, characterized in that: A rectangular groove (69) is provided on the end side of the rotating plate (6). A moving block (67) is slidably connected to the inner wall of the rectangular groove (69). The end side of the round rod (64) is rotatably connected to the side wall of the moving block (67). A threaded rod (65) is rotatably connected to the inner wall of the rotating plate (6). The outer wall of the threaded rod (65) is threadedly connected to the inner wall of the moving block (67).

3. The device according to claim 1, characterized in that: A support plate (8) is fixed to the side wall at the bottom of the support box (1). A middle baffle (9) is fixed to the top side of the middle part of the support plate (8). An outer baffle (7) is fixed to the top side of the edge of the support plate (8). There are two sets of outer baffles (7), and the two sets of outer baffles (7) are symmetrically arranged with the center line of the support plate (8) as the axis of symmetry.

4. The material distributing device for keyboard scissor foot production according to claim 1, characterized in that: The outer walls of both ends of the connecting hose (5) are fitted with cable ties (13), and the outer walls of the ends of the defective product discharge pipe (3) and the good product discharge pipe (4) are provided with limiting grooves (14). The cable ties (13) are retracted and snapped into the inside of the limiting grooves (14).

5. A material distribution device for keyboard scissor-switch pin production according to claim 2, characterized in that: The support box (1) has a sliding groove (12) on its side wall, and a rotating block (68) is rotatably connected to the end of the sliding bar (61). The rotating block (68) rolls on the inner wall of the sliding groove (12).

6. A material distribution device for keyboard scissor-switch pin production according to claim 4, characterized in that: The limiting groove (14) is provided in multiple sets, and multiple sets of limiting grooves (14) are opened on the outer wall of the top of the discharge cylinder (11), and another set of cable ties (13) are retracted and clamped to the inner wall of another set of limiting grooves (14).

7. A material distribution device for keyboard scissor-switch pin production according to claim 5, characterized in that: The sliding bar (61), connecting bar (62), and rotating block (68) are provided in two sets, and the two sets of sliding bars (61), connecting bars (62), and rotating blocks (68) are symmetrically arranged with the center line of the slide rail (63) as the axis of symmetry.

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