A screw rod and sliding block assembly automatic assembly workstation

Abstract

The application discloses a screw rod and sliding block assembly automatic assembling work station and relates to the technical field of work piece assembling work stations.The work station comprises a workbench, a conveying unit, a carrying unit and an assembling unit are arranged on the workbench, the conveying unit is used for conveying work pieces to the working radius of the carrying unit, the carrying unit is used for grabbing the work pieces to the assembling unit, and the assembling unit is used for assembling the work pieces.The application replaces manual assembly by the cooperation of multiple mechanical units, realizes the mechanical assembly of the top cover, further improves the assembly efficiency and quality, reduces the labor intensity of workers and saves the assembly cost.

Description

Technical Field

[0001] This invention relates to the field of workpiece assembly station technology, and more particularly to an automatic assembly station for lead screw and slider assemblies. Background Technology

[0002] Existing such as Figure 1 As shown, a workpiece is disclosed. The structure of the workpiece includes a base plate, with a side plate vertically mounted at each end of the base plate. A lead screw is provided between the two side plates, and a bearing is threaded onto the lead screw. Guide rods are provided on both sides of the lead screw on the two side plates, and a slider is provided on each guide rod. A top cover is installed on the top of the slider and the bearing.

[0003] The current method of installing the top cover on a pre-assembled semi-finished product consisting of a base plate, side plates, lead screw, guide rod, bearing, and slider is generally done by workers manually assembling it using a nail gun based on the semi-finished product from the previous process. This method is problematic because, on the one hand, the workers' physical strength declines, which affects work efficiency; on the other hand, manual work relies entirely on experience, and the assembly quality varies from person to person. Since there are many bolts on the top cover, it is easy for bolts to be missed, which makes it impossible to guarantee the assembly quality and precision.

[0004] Therefore, in view of the above problems, the present invention designs an automatic assembly station for lead screw and slider components to replace manual labor in quickly and accurately assembling the top cover. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides an automated assembly station for lead screw and slider assemblies, which solves the problems of low efficiency and unreliable assembly quality caused by manual assembly of the top cover.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0007] An automatic assembly station for lead screw and slider assemblies includes a workbench. The workbench is equipped with a transport unit, a handling unit, and an assembly unit. The transport unit is used to transport the workpiece to the working radius of the handling unit. The handling unit is used to pick up the workpiece and place it onto the assembly unit. The assembly unit is used to assemble the workpiece.

[0008] The assembly unit includes a base, on which a vertical plate is arranged in parallel. A first guide rail is mounted on the vertical plate, and a sliding plate is slidably arranged on the first guide rail. A second guide rail and a first drive cylinder are respectively arranged at both ends of the sliding plate perpendicular to the extension direction of the first guide rail. A lifting drive cylinder is provided on each of the second guide rail and the first drive cylinder, and a mold frame is provided between the two lifting drive cylinders.

[0009] The base is located below the skateboard and is equipped with a drive device, the output end of which is connected to the skateboard.

[0010] The slide plate is provided with a support column below the mold frame. The support column is provided with a bearing plate. The bearing plate is provided with positioning columns at both ends. The bearing plate is provided with a bracket between the positioning columns.

[0011] A rectangular positioning cavity is provided in the middle of the mold frame, and clearance holes are provided at the four corners of the positioning cavity.

[0012] Furthermore, a rectangular positioning cavity is provided in the middle of the mold frame, and second clearance openings are provided on both sides of the positioning cavity along the length direction. Clearance holes are provided at the four corners of the positioning cavity. A first sensing device is provided on the mold frame, and the sensing end of the first sensing device extends into the positioning cavity.

[0013] Furthermore, the base is fixedly provided with a gantry at one end of the first guide rail, the gantry is provided with a sliding support plate, the sliding support plate is provided with a third guide rail, a nail gun is slidably provided on the third guide rail, the nail gun is provided with a hopper, and the sliding support plate is provided with a second drive cylinder, the telescopic end of the second drive cylinder is connected to the nail gun.

[0014] Furthermore, the transport unit is equipped with a transport frame, a track trolley is mounted on the transport frame, a tire frame is mounted on the track trolley, and a second sensing device is mounted on the transport frame.

[0015] Furthermore, the handling unit includes a robotic arm and a quick-change bracket, on which a first quick-change gripper and a second quick-change gripper are placed.

[0016] Furthermore, the quick-change bracket is also provided with a support, and the support is provided with a third sensing device.

[0017] Furthermore, a fourth sensing device is provided at the bottom of the support plate.

[0018] In summary, the beneficial technical effects of the present invention are as follows:

[0019] (1) The robot arm uses the first quick-change gripper and the second quick-change gripper to grab the semi-finished workpiece and the top cover respectively. At the same time, the first drive cylinder moves the mold frame to the top cover nailing station to provide positioning for the subsequent placement of the top cover. The drive device moves the slide plate with the top cover and workpiece to the bottom of the nail gun to nail, thereby replacing the manual nailing assembly of the top cover, further improving the assembly efficiency and quality, and improving the automation of the top cover assembly.

[0020] (2) The positioning cavity on the mold frame provides positioning for the top cover on the bearing and slider, making the hole alignment more precise and facilitating nailing. At the same time, the first and second clearance openings make the placement of the base plate and top cover more precise, and the clearance holes improve the speed of top cover placement.

[0021] (3) The track trolley can transport the tire frame to the designated location, and the second sensing device can improve the positioning accuracy, making it easier for the robotic arm to grasp the tire frame, while also avoiding the need for manual placement of the tire frame.

[0022] (4) The first sensing device can detect whether there is a top cover in the positioning cavity of the mold frame to avoid the nail gun hitting in vain. The third sensing device can detect whether there is a top cover on the support to avoid the robot arm grabbing in vain and doing useless work. The fourth sensing device can detect whether there is a workpiece on the bearing plate to avoid the top cover being placed incorrectly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the workpiece;

[0024] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 3 This is a structural schematic diagram of the present invention from another angle;

[0026] Figure 4 This is a schematic diagram of the transport unit of the present invention;

[0027] Figure 5 This is a schematic diagram of the transport unit of the present invention;

[0028] Figure 6 This is a schematic diagram of the assembly unit of the present invention;

[0029] Figure 7 This is a schematic diagram of the mold frame structure;

[0030] Figure 8 This is a schematic diagram of the load-bearing plate structure;

[0031] Figure 9 This is a schematic diagram of the workpiece assembly.

[0032] Reference numerals: 1. Base plate; 2. Bearing; 3. Lead screw; 4. Side plate; 5. Guide rod; 6. Slider; 7. Top cover; 8. Workbench; 9. Transport unit; 10. Handling unit; 11. Assembly unit; 12. Transport frame; 13. Track trolley; 14. Jig; 15. Robotic arm; 16. Quick-change bracket; 17. First quick-change gripper; 18. Second quick-change gripper; 19. Support; 20. Base; 21. Vertical plate; 22. First guide rail; 23. Slide plate; 24. Second guide rail; 25. First 26. Drive cylinder; 27. Lifting drive cylinder; 28. Mold frame; 29. ​​Drive device; 30. Support column; 31. Bearing plate; 32. First clearance opening; 33. Positioning column; 34. Card seat; 35. Gantry; 36. Sliding support plate; 37. Third guide rail; 38. Second drive cylinder; 39. Nail gun; 40. Hopper; 41. Positioning cavity; 42. Clearance hole; 43. Second clearance opening; 44. First sensing device; 45. Second sensing device; 46. Third sensing device; 47. Fourth sensing device. Detailed Implementation

[0033] The present invention will now be clearly and completely described in conjunction with embodiments.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0035] In the description of the embodiments, unless otherwise explicitly specified and limited, the terms "set," "connect," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or a connection through an intermediate medium, or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] See appendix Figure 2-9The diagram illustrates an automatic assembly station for a lead screw and slider assembly. It includes a workbench 8, on which a transport unit 9, a handling unit 10, and an assembly unit 11 are sequentially arranged. Specifically, the assembly unit 11 has a base 20, on which two parallel uprights 21 are arranged. Each upright 21 has a first guide rail 22 along its length. A drive device 28, specifically a servo motor with a lead screw, is located between the two first guide rails 22 on the base 20. A sliding plate 23 slides along the two first guide rails 22. The side of the sliding plate 23 closest to the drive device 28 is connected to the lead screw. The drive device 28 uses the lead screw 3 to drive the sliding plate 23 to slide laterally along the first guide rails 22. The end of the sliding plate 23 closest to the drive device 28 is perpendicular to the first guide rail 22. A second guide rail 24 is provided in the extension direction of the guide rail 22. A first drive cylinder 25 is provided on the slide plate 23 parallel to the second guide rail 24. A lifting drive cylinder 26 is provided on both the second guide rail 24 and the first drive cylinder 25. A mold frame 27 is bolted between the two lifting drive cylinders 26. In use, the first drive cylinder 25 drives the mold frame 27 to move longitudinally along the second guide rail 24. Simultaneously, the lifting drive cylinder 26 allows the mold frame 27 to be lifted upwards during movement to avoid interference with the top of the workpiece. Two support columns 29 are provided below the mold frame 27 on the slide plate 23. A bearing plate 30 is provided at the top of the two support columns 29. The bearing plate 30 is used to place the workpiece to be assembled. Positioning posts 32 are provided at both ends of plate 30. The positioning posts 32 are used to limit the entire workpiece by cooperating with the positioning holes on the workpiece base plate 1. A retainer 33 is provided in the middle of the two positioning posts 32 on the support plate 30. The retainer 33 is used to position the bearing 2 and slider 6 on the base plate 1 to improve stability. The support plate 30 has first clearance openings 31 on both sides along its length. The mold frame 27 has a positioning cavity 40 for positioning and placing the top cover 7. The positioning cavity 40 can just accommodate the top cover 7. At the same time, the positioning cavity 40 has second clearance openings 42 on both sides along its length. A clearance hole 41 is provided at each of the four corners of the positioning cavity 40. The clearance hole 41 is used to avoid interference with the four corners of the top cover 7 and improve the passage of the top cover 7 in the positioning cavity 40. A gantry 34 is provided at one end of the 20 away from the drive device 28. A sliding support plate 35 is bolted to the gantry 34. A third guide rail 36 is horizontally provided on the sliding support plate 35. A nail gun 38 is slidably provided on the third guide rail 36. A nail hopper 39 is connected to the nail gun 38. At the same time, a second drive cylinder 37 is also provided on the gantry 34. The second drive cylinder 37 can be one of a pneumatic cylinder, an electric cylinder, or a hydraulic cylinder. The second drive cylinder 37 can drive the nail gun 38 to move left and right along the third guide rail 36, thereby enabling nailing at various positions on the top cover 7. The specific structure and working principle of the nail gun 38 have been disclosed in the utility model patent application No. 201920819916.8 entitled "Mobile Hopper 39 Type Screw Locking Machine".

[0037] Furthermore, the transport unit 9 is used to transport the semi-finished products from the previous process to the working radius of the handling unit 10 for easy gripping. The transport unit 9 is equipped with a transport frame 12, on which a rail trolley 13 is mounted via a track. The rail trolley 13 is equipped with a jig 14, which is used to position and place the semi-finished workpiece for easy gripping. In order to park the rail trolley 13 at the designated position on the transport frame 12, a sensor plate is provided at the bottom of the rail trolley 13. At the same time, the transport frame is equipped with a second sensing device 44 that interacts with the sensor plate. When the rail trolley 13 moves on the transport frame 12, the rail trolley 13 stops moving when the second sensing device 44 generates a sensing signal with the sensor plate.

[0038] Furthermore, the handling unit 10 includes a robotic arm 15 and a quick-change bracket 16. The quick-change bracket 16 is provided with a first quick-change gripper 17 and a second quick-change gripper 18. The first quick-change gripper 17 is used to grab the semi-finished product with the base plate 1 and place it on the support plate 30. The second quick-change gripper 18 is used to grab the top cover 7 and place it in the positioning cavity 40 of the mold frame 27. At the same time, the quick-change bracket 16 is provided with a support 19 for placing the top cover 7.

[0039] In order to know in a timely manner whether there is a top cover 7 in the positioning cavity 40, a first sensing device 43 is provided on the mold frame 27.

[0040] In order to improve the effectiveness of nailing by the nail gun 38, a fourth sensing device 46 is provided at the bottom of the support plate 30. The fourth sensing device 46 can detect in time whether there is a workpiece on the support, so as to avoid nailing when there is no workpiece.

[0041] To prevent material shortage on the support 19 and avoid the robot arm 15 from doing useless work, a third sensing device 45 is provided on the support 19.

[0042] In order to improve the accuracy of the base plate 1 on the support plate 30 and to avoid interference between the first quick-change claw 17 and the support plate 30, a first clearance opening 31 is provided on both sides of the support plate 30 along the length direction. The first clearance opening 31 can just accommodate the gripper width of the first quick-change claw 17.

[0043] To avoid interference with the mold frame 27 when the top cover 7 is placed into the positioning cavity 40 using the second quick-change gripper 18, a second clearance opening 42 is provided on both sides of the positioning cavity 40 along the length direction. The second clearance opening 42 can just accommodate the gripper width of the second quick-change gripper 18.

[0044] The first sensing device 43 is specifically a fiber optic sensing probe.

[0045] The second sensing device 44 is specifically a proximity switch.

[0046] The third sensing device 45 is specifically a photoelectric switch.

[0047] The fourth sensing device 46 is specifically a photoelectric switch.

[0048] The first drive cylinder 25 is specifically a DGC series rodless cylinder.

[0049] The lifting drive cylinder 26 is specifically a DGST-10-30 type slide cylinder.

[0050] For a summary, please refer to the appendix. Figure 9 As shown, during the assembly of the top cover 7, the entire slide plate 23 is first moved along the first guide rail 22 to one end away from the gantry 34 by the drive device 28 on the assembly unit 11. Then, the mold frame 27 is moved along the second guide rail 24 to one end by the first drive cylinder 25. Next, the quick-change head on the execution end of the robot arm 15 is connected to the first quick-change gripper 17, and the semi-finished product with the base plate 1 on the jig 14 is picked up and placed onto the support plate 30. When placing it onto the support plate 30, the two positioning pins 32 are inserted into the positioning holes on the base plate 1, and the bearing 2 and the slider 6 are respectively inserted into the holder 33. Then, the lifting drive cylinder 26 is activated to lift the entire mold frame 27 upward to a position higher than the side plate 4. Then, the first drive cylinder 25 is used to move the mold frame 27 along the second guide rail 24 to one end. The track 24 moves so that the positioning cavity 40 is positioned directly above the bearing 2 and the slider 6. Then, the mold frame 27 is lowered. Next, the robot arm 15, connected to the second quick-change gripper 18, grabs the top cover 7 on the support 19 and places it into the positioning cavity 40. At this time, the holes on the top cover 7, the bearing 2, and the slider 6 are concentric. Then, the drive device 28 moves the entire slide plate 23 along the first guide rail 22 to the position of the nail gun 38. Then, the nail gun 38, in conjunction with the second drive cylinder 37, nails are driven into the top cover 7 at various positions. This completes the assembly of the entire top cover 7. The entire assembly process is completed through the cooperation of various mechanical units, thereby replacing manual nailing by workers, improving assembly efficiency and quality, reducing labor, and lowering assembly costs.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic assembly station for lead screw and slider assemblies, characterized in that: The system includes a workbench (8), on which a transport unit (9), a handling unit (10), and an assembly unit (11) are provided. The transport unit (9) is used to transport the workpiece to the working radius of the handling unit (10), the handling unit (10) is used to grab the workpiece onto the assembly unit (11), and the assembly unit (11) is used to assemble the workpiece. The assembly unit (11) includes a base (20), on which a vertical plate (21) is arranged in parallel. A first guide rail (22) is installed on the vertical plate (21). A sliding plate (23) is slidably arranged on the first guide rail (22). A second guide rail (24) and a first drive cylinder (25) are respectively arranged at both ends of the sliding plate (23) perpendicular to the extension direction of the first guide rail (22). A lifting drive cylinder (26) is provided on both the second guide rail (24) and the first drive cylinder (25). A mold frame (27) is provided between the two lifting drive cylinders (26). The base (20) is located below the slide plate (23) and is equipped with a drive device (28). The output end of the drive device (28) is connected to the slide plate (23). The slide plate (23) is provided with a support column (29) below the mold frame (27). The support column (29) is provided with a bearing plate (30). The bearing plate (30) is provided with positioning columns (32) at both ends. The bearing plate (30) is provided with a card seat (33) between the positioning columns (32). The mold frame (27) has a rectangular positioning cavity (40) in the middle, and the four corners of the positioning cavity (40) are respectively provided with clearance holes (41). The bearing plate (30) has a first clearance opening (31) at the middle of both sides along the length direction, and the positioning cavity (40) has a second clearance opening (42) at both sides along the length direction. The mold frame (27) is provided with a first sensing device (43), and the sensing end of the first sensing device (43) extends into the positioning cavity (40). The base (20) is fixedly provided with a gantry (34) at one end of the first guide rail (22). The gantry (34) is provided with a sliding support plate (35). The sliding support plate (35) is provided with a third guide rail (36). The third guide rail (36) is slidably provided with a nail gun (38). The nail gun (38) is provided with a hopper (39). The sliding support plate (35) is provided with a second drive cylinder (37). The telescopic end of the second drive cylinder (37) is connected to the nail gun (38).

2. The automatic assembly station for a lead screw and slider assembly according to claim 1, characterized in that: The transport unit (9) is provided with a transport frame (12), a track trolley (13) is provided on the transport frame (12), a tire frame (14) is provided on the track trolley (13), and a second sensing device (44) is provided on the transport frame (12).

3. The automatic assembly station for a lead screw and slider assembly according to claim 2, characterized in that: The handling unit (10) includes a robotic arm (15) and a quick-change bracket (16), on which a first quick-change gripper (17) and a second quick-change gripper (18) are placed.

4. The automatic assembly station for a lead screw and slider assembly according to claim 3, characterized in that: The quick-change bracket (16) is also provided with a support (19), and the support (19) is provided with a third sensing device (45).

5. The automatic assembly station for a lead screw and slider assembly according to claim 4, characterized in that: The bottom of the support plate (30) is provided with a fourth sensing device (46).

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