Automatic screw installation device

Abstract

The application relates to the field of screw driving equipment and discloses a screw automatic mounting device which comprises a rack, a tooling arranged on the rack and a pressing mechanism, a pressing plate is arranged on the pressing mechanism, a pressing block is arranged on the pressing plate, the pressing mechanism drives the pressing block to press down the end of a wire harness through the pressing plate; the screw automatic mounting device further comprises a screw supply mechanism, a three-axis driving mechanism and a driving mechanism, the screw supply mechanism delivers screws to a specified area, the three-axis driving mechanism drives the driving mechanism to move to the specified area, the driving mechanism sucks the screws, the three-axis driving mechanism drives the driving mechanism to move above the wire harness assembly, and the driving mechanism drives the screws into the wire harness assembly. The application has the advantages that the wire harness can be pressed by adopting a mechanical pressing mode, the installation between the wire harness and the substrate is not prone to dislocation deviation, mechanical full-automatic screw driving is adopted, the screw installation is more firm, and the situation of missed driving does not occur, so that the qualified rate of the wire harness assembly is greatly improved.

Description

Technical Field

[0001] This application relates to the field of screw-driving equipment, and more particularly to an automatic screw-installing device. Background Technology

[0002] Wire harnesses are used in precision equipment such as motors to connect various electronic components. (Refer to...) Figure 9 The wire harness 26 needs to be assembled onto the substrate 27. Two screws 28 are used to fix the ends of the wire harness 26 onto the substrate 27. The two screws 28 are located on opposite sides of the wire harness 26.

[0003] In traditional processes, screws are installed manually. The worker presses the end of the wire harness with one hand to press it firmly onto the substrate, while using the other hand to drive the screw into the wire harness and substrate, thus assembling the wire harness and substrate into a wire harness assembly.

[0004] Because screws are tightened manually, the tightness of the screws cannot be judged, often resulting in screws not being tightened properly or even being missed. At the same time, because the wire harness is pressed manually, the tightness of the wire harness is not high. During the screw-driving process, the substrate and the wire harness will vibrate, causing misalignment between the wire harness and the substrate, thereby reducing the pass rate of the wire harness assembly. Summary of the Invention

[0005] To address the issue of low pass rates in manual assembly of wire harness components, this application provides an automatic screw installation device.

[0006] The automatic screw installation device provided in this application adopts the following technical solution:

[0007] An automatic screw installation device includes a frame with a fixture for placing a wire harness assembly. A clamping mechanism is also provided on the frame, with a pressure plate at its drive end and a pressure block on the bottom wall of the pressure plate. The clamping mechanism drives the pressure block via the pressure plate to press down on the end of the wire harness. The device further includes a screw feeding mechanism, a three-axis drive mechanism, and a screw-driving mechanism at the drive end of the three-axis drive mechanism, all mounted on the frame. The screw feeding mechanism delivers screws to a designated area, the three-axis drive mechanism drives the screw-driving mechanism to move to the designated area, the screw-driving mechanism picks up the screw, and the three-axis drive mechanism drives the screw-driving mechanism to move above the wire harness assembly, where the screw-driving mechanism drives the screw into the wire harness assembly. The pressure plate, located above the screw-driving point on the wire harness assembly, has a first through hole for the drive end of the screw-driving mechanism and the screw to pass through.

[0008] By adopting the above technical solution, the operator places the substrate and wire harness on the fixture. The clamping mechanism moves the clamping block via the pressure plate, clamping the end of the wire harness. The screw feeding mechanism delivers screws to the designated area. The three-axis drive mechanism moves the screw-driving mechanism to the screw feeding mechanism, where it picks up the screws in the designated area. The three-axis drive mechanism then moves the screw-driving mechanism above the fixture, driving the screws into the designated position on the wire harness. To ensure the clamping block can clamp the wire harness, the width of the pressure plate must be greater than the width of the clamping block. This may cause the pressure plate to obstruct the screw-driving position on the wire harness. In this case, the screw-driving mechanism can pass through the pressure plate through the first through hole, preventing the pressure plate from interfering with the screw-driving. This setup, using mechanical clamping to tighten the wire harness, reduces the likelihood of misalignment between the wire harness and the substrate. The fully automatic mechanical screw-driving ensures more secure screw installation and eliminates missed screws, thus significantly improving the yield rate of the wire harness assembly.

[0009] Preferably, the clamping mechanism includes a first driving member, a second driving member, and a first sliding plate. The first driving member is fixedly mounted on the frame, and the first sliding plate is slidably mounted on the frame and fixedly connected to the driving end of the first driving member. The first driving member drives the first sliding plate to slide in a direction close to or away from the tooling. The second driving member is mounted on the first sliding plate, and the pressure plate is mounted on the driving end of the second driving member. The second driving member drives the pressure plate to move up and down in a direction close to or away from the tooling.

[0010] By adopting the above technical solution, when the wire harness is clamped, the first drive mechanism drives the second drive mechanism to move closer to the tooling via the first slide plate. The second drive mechanism then drives the pressure block to move above the tooling via the pressure plate. The second drive mechanism then drives the pressure block to descend via the pressure plate, and the pressure block moves to clamp the end of the wire harness. This mechanical clamping method makes the wire harness more securely clamped.

[0011] Preferably, the nail feeding mechanism includes a nail feeding base, a receiving platform, a third driving component, and a nail feeder. The nail feeding base and the third driving component are both mounted on the frame. The receiving platform is slidably mounted inside the nail feeding base. The nail feeder delivers screws to the receiving platform via a flexible hose. The driving end of the third driving component is fixedly connected to the receiving platform and drives the receiving platform to move to a designated area.

[0012] By adopting the above technical solution, the screw is placed in the screw feeder, which transports the screw to the receiving platform through a hose. The third drive unit drives the receiving platform to move within the screw feeder base, so that the screw is transported to the designated area, thereby facilitating the screw picking up by the nailing mechanism.

[0013] Preferably, the three-axis drive mechanism includes a support frame, an X-axis drive unit, a Y-axis drive unit, and a Z-axis drive unit. The support frame is mounted on the machine frame, the Y-axis drive unit is mounted on the support frame, the X-axis drive unit is mounted at the drive end of the Y-axis drive unit, the Z-axis drive unit is mounted at the drive end of the X-axis drive unit, and the nailing mechanism is mounted at the drive end of the Z-axis drive unit.

[0014] By adopting the above technical solution, a three-dimensional coordinate system is established with the workpiece as the origin. The X-axis drive unit, Y-axis drive unit and Z-axis drive unit on the support frame can drive the nailing mechanism to move freely in three-dimensional space, thereby facilitating the nailing mechanism to accurately pick up screws and accurately drive screws.

[0015] Preferably, the nailing mechanism includes a mounting plate, a fourth driving component, a lifting rod, a first slider, a second slider, a screw gun, and a suction sleeve. The mounting plate is fixedly mounted on the driving end of the Z-axis driving unit. The fourth driving component is mounted on the top of the mounting plate. The lifting rod is fixedly mounted on the driving end of the fourth driving component, and the fourth driving component drives the lifting rod to move up and down. The first slider is fixedly mounted on the lifting rod and slides in cooperation with the mounting plate. The screw gun is fixedly mounted on the first slider. The second slider is slidably mounted on the lifting rod and located below the first slider. The bottom end of the mounting plate is provided with a baffle that abuts against the second slider. The suction sleeve is mounted on the second slider. The head of the screw gun slides through the first slider and the suction sleeve, and the suction sleeve slides through the first through hole.

[0016] By adopting the above technical solution, when the nailing mechanism moves to the designated area of ​​the nail supply mechanism, the suction sleeve draws air, thereby lifting the bolt. When the nailing mechanism moves above the fixture, the fourth drive unit on the mounting plate drives the lifting rod to descend. The lifting rod drives the first and second sliders to descend together. The first slider drives the screw gun to descend, and the second slider drives the suction sleeve through the first through hole. When the second slider moves to abut the baffle, it stops moving. At this time, the first slider continues to descend, and the screw gun head slides out of the suction sleeve. At this point, the screw gun can be used to drive the screw into the end of the wire harness. After the screw is driven, the fourth drive unit drives the lifting rod to rise, allowing the screw gun head and the suction sleeve to slide out of the first through hole. This setup allows for fully automatic screw driving using mechanical equipment, resulting in more secure screw installation and preventing missed screws.

[0017] Preferably, the lifting rod is provided with an elastic element, and the two ends of the elastic element are fixedly connected to the first slider and the second slider.

[0018] By adopting the above technical solution, when the lifting rod rises, it drives the first slider to rise, and the first slider pulls the second slider to rise through the elastic element, causing the suction sleeve to slide out from the first perforation. Simultaneously, when the lifting rod descends and the second slider stops moving, the first slider continues to move and compresses the elastic element, ensuring that the stopping of the second slider does not affect the movement of the first slider.

[0019] Preferably, the pressure block is rotatably mounted on the pressure plate, and the pressure plate is provided with a first fixing member for fixing the pressure block.

[0020] By adopting the above technical solution, the pressure block can be adjusted by rotating it on the pressure plate, making it suitable for pressing different types of products.

[0021] Preferably, the pressure plate includes a support plate and an adjustment plate. The support plate is fixedly mounted on the drive end of the pressing mechanism. A second through hole is formed in the support plate, and the second through hole accounts for 30%-50% of the support plate.

[0022] By adopting the above technical solution, when screwing different types of products, the relative positions between the clamping area and the screwing area often vary, and a single first through hole cannot adapt to different products. In this case, the second through hole occupies a larger proportion on the support plate, thereby increasing the area where the screw gun head can pass through the pressure plate, making the automatic screw installation device applicable to different types of products.

[0023] Preferably, an adjusting plate is slidably disposed on the supporting plate above the first through hole, the adjusting plate covers the first through hole, a plurality of third through holes are spaced apart on the adjusting plate, the plurality of third through holes slidably cover the second through hole, and a second fixing member is provided on the supporting plate for fixing the adjusting plate.

[0024] By adopting the above technical solution, the adjusting plate is fixed above the supporting plate at the second through hole using a second fixing member, thereby reinforcing the supporting plate and increasing its structural strength. This also prevents the supporting plate from shaking when the pressure block clamps the wire harness. Furthermore, by sliding the adjusting plate, multiple third through holes slide, allowing their permeable areas to cover the permeable areas of the second through holes. This increases the structural strength of the supporting plate while maintaining the same permeable area for the screw gun head.

[0025] Preferably, the third perforations are linearly spaced on the adjustment plate, and the third perforations are arranged in multiple rows. The connecting portion between two adjacent third perforations in a row is located in the middle of the third perforations in an adjacent row.

[0026] By adopting the above technical solution, the linearly arranged third perforations increase the range through which the screw gun head can pass through the pressure plate. The connecting part between two adjacent third perforations in each column cannot pass through the gun head. By sliding the adjustment plate, the third perforations in adjacent columns can cover the connecting part between the third perforations in the original column, so that the passable area of ​​multiple third perforations can cover the passable area of ​​the second perforation.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By using mechanical clamping to tighten the wire harness, misalignment between the wire harness and the substrate is less likely to occur during installation; fully automatic mechanical screw driving ensures that the screws are installed more securely and that no screws are missed, thereby greatly improving the pass rate of the wire harness assembly.

[0029] 2. By using a support plate and an adjusting plate, the adjusting plate slides on the support plate, and the adjusting plate drives multiple third through holes to slide, thereby increasing the area where the screw gun head can pass through the pressure plate, making the automatic screw installation device suitable for different types of products. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the automatic screw installation device in Embodiment 1 of this application;

[0031] Figure 2 This is a partial structural diagram of the automatic screw installation device in Embodiment 1 of this application, highlighting the clamping mechanism;

[0032] Figure 3 This is a schematic diagram of a portion of the screw-feeding mechanism in Embodiment 1 of this application, highlighting the automatic screw-installing device.

[0033] Figure 4 This is a partial structural diagram of the automatic screw installation device in Embodiment 1 of this application, highlighting the three-axis drive mechanism;

[0034] Figure 5 This is a partial structural diagram of the automatic screw installation device in Embodiment 1 of this application, highlighting the nailing mechanism;

[0035] Figure 6 This is a schematic diagram of the automatic screw installation device in Embodiment 2 of this application, highlighting the pressure plate.

[0036] Figure 7 This is a schematic diagram of the automatic screw installation device in Embodiment 3 of this application, highlighting the pressure plate.

[0037] Figure 8This is an exploded view of the automatic screw installation device in Embodiment 3 of this application, highlighting a portion of the pressure plate structure;

[0038] Figure 9 This is a schematic diagram of a wire harness assembly in the background art of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Tooling; 3. Clamping mechanism; 31. First driving component; 32. Second driving component; 33. First sliding plate; 4. Pressure plate; 41. Support plate; 42. Adjusting plate; 5. Pressure block; 6. Nail feeding mechanism; 61. Nail feeding base; 62. Receiving platform; 63. Third driving component; 64. Nail feeder; 7. Three-axis drive mechanism; 71. Support frame; 72. X-axis drive unit; 73. Y-axis drive unit; 74. Z-axis drive unit; 8. Nail driving mechanism; 81. Mounting plate; 82. Fourth driving component; 83. Lifting rod ; 84. First slider; 85. Second slider; 86. Screw gun; 87. Suction sleeve; 9. First through hole; 10. Baffle; 11. Elastic element; 12. First fixing element; 13. Second through hole; 14. Third through hole; 15. Limiting ring groove; 16. Ring sensor; 17. Through-beam sensor; 18. Hoses; 19. Second sliding plate; 20. Third sliding plate; 21. First threaded post; 22. First slide groove; 23. Second threaded post; 24. Second fixing element; 25. Second slide groove; 26. Wire harness; 27. Substrate; 28. Screw. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0041] This application discloses an automatic screw installation device.

[0042] Example 1:

[0043] Reference Figure 1 and 2 An automatic screw installation device includes a frame 1, a fixture 2 mounted on the frame 1, a clamping mechanism 3, a screw feeding mechanism 6, a three-axis drive mechanism 7, and a screw-driving mechanism 8 mounted on the three-axis drive mechanism 7. The fixture 2 is detachably and fixedly mounted on the frame 1 by hand-tightening bolts. The fixture 2 has an integrally formed substrate placement station and a wire harness placement station. A pressure plate 4 is mounted on the drive end of the clamping mechanism 3, and a pressure block 5 is fixedly mounted on the bottom wall of the pressure plate 4. The clamping mechanism 3 drives the pressure block 5 through the pressure plate 4 to clamp the wire harness on the fixture 2. Using mechanical clamping to clamp the wire harness makes it less prone to misalignment between the wire harness and the substrate.

[0044] Reference Figure 1The screw feeding mechanism 6 delivers screws to the screw picking area. The three-axis drive mechanism 7 first drives the screw driving mechanism 8 to move to the screw picking area. The screw driving mechanism 8 picks up the screw from the screw picking area. The three-axis drive mechanism 7 then drives the screw driving mechanism 8 to move above the fixture 2. The screw driving mechanism 8 drives the screw into the wire harness and the substrate. The screw feeding mechanism 6, the three-axis drive mechanism 7, and the screw driving mechanism 8 repeat the above steps to drive in the second screw. The use of fully automatic mechanical screw driving makes the screws more secure and prevents missed screws, thereby greatly improving the pass rate of the wire harness assembly.

[0045] Reference Figure 2 Specifically, the clamping mechanism 3 includes a first driving member 31, a second driving member 32, and a first sliding plate 33. The first sliding plate 33 is slidably mounted on the frame 1 along a direction close to or away from the tooling 2 via a guide rail. The first driving member 31 is fixedly mounted on the frame 1, and the driving end of the first driving member 31 is fixedly connected to the side wall of the first sliding plate 33. The second driving member 32 is fixedly mounted on the first sliding plate 33, and the pressure plate 4 is fixedly mounted on the driving end of the second driving member 32 via corner blocks. In this application, both the first driving member 31 and the second driving member 32 can be selected as cylinders.

[0046] The first driving member 31 moves the pressure block 5 above the fixture 2 via the first sliding plate 33, the second driving member 32, the corner block, and the pressure plate 4. The second driving member 32 then moves the pressure block 5 down via the corner block and the pressure plate 4, thereby pressing the end of the wire harness onto the substrate. After the wire harness assembly is assembled, the second driving member 32 first drives the pressure block 5 to rise, and then the first driving member 31 drives the pressure block 5 away from the workpiece.

[0047] Reference Figure 1 and 3 The nail feeding mechanism 6 includes a nail feeding base 61, a receiving platform 62, a third drive member 63, and a nail feeder 64. The nail feeding base 61 is fixedly mounted on the frame 1, and the third drive member 63 is fixedly mounted on the end of the nail feeding base 61. The receiving platform 62 is slidably mounted inside the nail feeding base 61 along its length. A receiving groove is formed in the middle of the top wall of the receiving platform 62 for receiving screws. The nail feeder 64 is located outside the frame 1. A flexible hose 18 is installed at the outlet end of the nail feeder 64, and the other end of the flexible hose 18 is above the nail feeding base 61. In this application, the nail feeder 64 can be a vibratory feeder, and the third drive member 63 can be a cylinder.

[0048] A screw is placed inside a screw feeder 64, which delivers a screw via a hose 18. The screw is then conveyed through the hose 18 to the receiving slot of the receiving platform 62. A ring sensor 16 is installed at the end of the hose 18 furthest from the vibratory feeder. When the screw is delivered out of the hose 18, the ring sensor 16 is triggered, controlling the third drive unit 63 to move the receiving platform 62 to the end of the screw feeder base 61, at which point the screw is located in the screw-picking area. A through-beam sensor 17 is installed on the outer wall of the end of the screw feeder base 61. When the receiving platform 62 moves to the end of the screw feeder base 61, the through-beam sensor 17 is triggered, controlling the movement of the three-axis drive mechanism 7 and the nail-driving mechanism 8 to pick up the screw from the receiving platform 62.

[0049] Reference Figure 4 The three-axis drive mechanism 7 includes an X-axis drive unit 72, a Y-axis drive unit 73, a Z-axis drive unit 74, and two support frames 71. The two support frames 71 are fixedly installed on the frame 1 at intervals. Each support frame 71 consists of two pillars and a support plate. The two pillars are fixedly installed on the frame, and the support plate is fixedly installed on the top of the two pillars. A second slide plate 19 is slidably installed on the two support plates.

[0050] A three-dimensional coordinate system is established with tooling 2 as the origin. The Y-axis drive unit 73 is fixedly installed on a support frame 71. The drive end of the Y-axis drive unit 73 is fixedly connected to the second slide plate 19 and drives the second slide plate 19 to slide along the Y-axis. The X-axis drive unit 72 is fixedly installed on the second slide plate 19. The drive end of the X-axis drive unit 72 is fixedly installed with the third slide plate 20, and the X-axis drive unit 72 drives the third slide plate 20 to slide along the X-axis. The Z-axis drive unit 74 is fixedly installed on the third slide plate 20, and the nailing mechanism 8 is installed on the drive end of the Z-axis drive unit 74.

[0051] The X-axis drive unit 72, Y-axis drive unit 73, and Z-axis drive unit 74 are all driven by servo motors and lead screws. The three-axis drive mechanism 7 enables the nailing mechanism 8 to move freely in three-dimensional space, thereby making the nailing mechanism 8 more accurate in picking up and driving nails.

[0052] Reference Figure 5 The nailing mechanism 8 includes a mounting plate 81, a fourth drive component 82, a lifting rod 83, a first slider 84, a second slider 85, a screw gun 86, and a suction sleeve 87. The mounting plate 81 is fixedly mounted on the drive end of the Z-axis drive unit 74, the fourth drive component 82 is fixedly mounted on the top of the mounting plate 81, and the lifting rod 83 is fixedly mounted on the drive end of the fourth drive component 82. In this application, the fourth drive component 82 can be a hydraulic cylinder, and the fourth drive component 82 can drive the lifting rod 83 to move up and down.

[0053] The first slider 84 is fixedly mounted on the lifting rod 83, and the screw gun 86 is fixedly mounted on the first slider 84. The second slider 85 is slidably sleeved on the lifting rod 83, and the suction sleeve 87 is fixedly mounted on the bottom wall of the second slider 85. Both the first slider 84 and the second slider 85 are slidably mounted vertically on the outer wall of the mounting plate 81, with the second slider 85 located below the first slider 84. The lifting rod 83 can drive the screw gun 86 to move up and down via the first slider 84.

[0054] An elastic element 11 is sleeved on the lifting rod 83, and the two ends of the elastic element 11 are fixedly connected to the first slider 84 and the second slider 85, respectively. The head of the screw gun 86 slides through the suction sleeve 87, and a baffle 10 is fixedly installed at the bottom end of the mounting plate 81. The second slider 85 slides against the baffle 10. In this application, the elastic element 11 can be a spring.

[0055] The first slider 84 drives the second slider 85 to move upward through the elastic element 11, thereby driving the suction sleeve 87 to move upward. At this time, the head of the screw gun 86 is located inside the suction sleeve 87. The second slider 85 is equipped with a suction pipe that communicates with the suction sleeve 87. When the suction pipe is suctioning, it can pick up the screws in the receiving table 62 and bring them to the end of the suction sleeve 87.

[0056] Reference Figure 2 and 5 The pressure plate 4 has a first through hole 9 above the screw-driving position of the wire harness. The first through hole 9 is an oblong hole. When driving the screw, the fourth drive member 82 drives the lifting rod 83 to descend, the lifting rod 83 drives the first slider 84 to descend, and the first slider 84 drives the second slider 85 to descend together through the elastic member 11. At this time, the head of the screw gun 86 is located in the suction sleeve 87, and the suction sleeve 87 passes through the first through hole 9 of the pressure plate 4. The suction sleeve 87 stops suction after sending the screw into the screw-driving position of the wire harness. At this time, the second slider 85 moves and abuts against the baffle 10 and stops moving. The first slider 84 continues to move and squeezes the elastic member 11. The first slider 84 drives the screw gun 86 to descend, and the head of the screw gun 86 passes through the suction sleeve 87 and is inserted into the screw, so that automatic screw driving can be performed.

[0057] To ensure that the pressure block 5 can clamp the wire harness, the width of the pressure plate 4 must be greater than the width of the pressure block 5. This causes the pressure plate 4 to block the screw driving position on the wire harness. At this time, the suction sleeve 87 can pass through the pressure plate 4 through the first through hole 9, so that the pressure plate 4 will not interfere with the screw driving. After the screw driving is completed, the first slider 84 rises. The first slider 84 pulls the second slider 85 to rise together through the elastic element 11, so that the suction sleeve 87 slides out from the first through hole 9. At the same time, when the lifting rod 83 descends and the second slider 85 stops moving, the first slider 84 continues to move and presses the elastic element 11, so that the stopping of the second slider 85 will not affect the movement of the first slider 84.

[0058] The implementation principle of Embodiment 1 of this application is as follows: the wire harness is pressed by mechanical clamping, so that the installation between the wire harness and the substrate is less prone to misalignment; the screws are driven by fully automatic machinery, so that the screws are installed more firmly and there will be no missed screws, thereby greatly improving the pass rate of the wire harness assembly.

[0059] Example 2:

[0060] Reference Figure 6 The difference between this embodiment and Embodiment 1 is that the pressure plate 4 includes a support plate 41, which is mounted on the driving end of the second driving member 32 via corner blocks. A second through hole 13 is formed in the middle of the support plate 41. The second through hole 13 is rectangular and occupies 30%-50% of the support plate 41. When screwing different types of products, the relative positions between the clamping area and the screwing area often differ, and a single first through hole 9 cannot accommodate different products. The second through hole 13 increases the area through which the screw gun 86 head can pass on the pressure plate 4, thus enabling the automatic screw installation device to be applicable to different types of products.

[0061] The pressure block 5 is installed at the bottom of the support plate 41. A first threaded post 21 is fixedly installed on the top wall of the pressure block 5. A first sliding groove 22 is provided on the support plate 41 along its own width direction. The first threaded post 21 is slidably installed in the first sliding groove 22 along the width direction of the support plate 41. A first fixing member 12 is installed on the first threaded post 21. In this application, the first fixing member 12 can be a nut, and the first fixing member 12 abuts against the top wall of the support plate 41.

[0062] Sliding the first threaded post 21 within the first slide groove 22 causes the pressure block 5 to slide. Rotating the first threaded post 21 within the first slide groove 22 causes the pressure block 5 to rotate. Rotating the first fixing member 12 then fixes the pressure block 5 onto the support plate 41. Adjusting the position of the pressure block 5 allows it to be used to press different types of products, thereby further improving the applicability of the automatic screw installation device.

[0063] The implementation principle of Embodiment 2 of this application is as follows: the second through hole 13 has a larger proportion on the support plate 41, thereby increasing the area where the screw gun 86 head can pass through the pressure plate 4, so that the automatic screw installation device can be applied to different types of products.

[0064] Example 3:

[0065] Reference Figure 7 and 8 The difference between this embodiment and Embodiment 2 is that a limiting annular groove 15 is formed on the top wall of the support plate 41 around the second through hole 13. An adjusting plate 42 is slidably mounted on the support plate 41 within the limiting annular groove 15 along its own width direction. The opposite side walls of the adjusting plate 42 along its perpendicular sliding direction are attached to the opposite side walls of the support plate 41 located in the limiting annular groove 15. The limiting annular groove 15 limits the adjusting plate 42, making the sliding of the adjusting plate 42 more stable.

[0066] The adjusting plate 42 has second sliding grooves 25 on both sides along the length of the supporting plate 41. The second sliding grooves 25 are opened along the sliding direction of the adjusting plate 42. Two second threaded posts 23 are installed in each second sliding groove 25. The second threaded posts 23 are fixedly connected to the supporting plate 41, and second fixing members 24 are installed on the second threaded posts 23. In this application, the second fixing members 24 can be nuts, and the second fixing members 24 abut against the top wall of the adjusting plate 42. When the adjusting plate 42 slides, the second threaded posts 23 slide in the second sliding grooves 25. After the adjusting plate 42 slides, rotating the four second fixing members 24 can fix the second plate to the supporting plate 41, thereby reinforcing the supporting plate 41 and making the supporting plate 41 structurally stronger. When the pressure block 5 presses the wire harness, the supporting plate 41 is less likely to shake.

[0067] The adjusting plate 42 has multiple third through holes 14, which are oblong holes. The third through holes 14 are linearly spaced along the length of the supporting plate 41, and the multiple third through holes 14 are evenly spaced in five rows along the width of the supporting plate 41. Among them, the first, third and fifth rows have four third through holes 14, and the second and fourth rows have three third through holes 14.

[0068] The middle position of each of the third perforations 14 in the second and fourth columns covers the connecting portion between two adjacent third perforations 14 in the first, third, and fifth columns along the sliding direction of the adjusting plate 42. When the adjusting plate 42 is slidable, the third perforations 14 in the second and fourth columns can cover the connecting portion between adjacent third perforations 14 in the first, third, and fifth columns, and at the same time, the third perforations 14 in the first, third, and fifth columns can cover the connecting portion between adjacent third perforations 14 in the second, fourth, and fifth columns.

[0069] The head of the screw gun 86 can pass through the adjusting plate 42 through the third through hole 14, and then through the second through hole 13 to drive in screws. The connecting part between two adjacent third through holes 14 in each column cannot pass through the head. By sliding the adjusting plate 42, the third through holes 14 in adjacent columns can cover the connecting part between the third through holes 14 in the original column, so that the passable area of ​​multiple third through holes 14 can cover the passable area of ​​the second through hole 13.

[0070] The implementation principle of Embodiment 3 of this application is as follows: the support plate 41 is reinforced by using the adjustment plate 42, and multiple third through holes 14 are opened on the adjustment plate 42 for the head of the screw gun 86 to pass through, thereby increasing the structural strength of the support plate 41 without changing the area through which the head of the screw gun 86 can pass.

[0071] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic screw installation device, characterized in that: The device includes a frame (1), on which a fixture (2) for placing wire harness assemblies is provided. A clamping mechanism (3) is provided on the frame (1). A pressure plate (4) is provided at the driving end of the clamping mechanism (3). A pressure block (5) is provided on the bottom wall of the pressure plate (4). The clamping mechanism (3) drives the pressure block (5) to press down the end of the wire harness through the pressure plate (4). The device also includes a nail feeding mechanism (6) and a three-axis drive mechanism (7) provided on the frame (1). The screw-driving mechanism (8) at the end of the wire harness assembly has a screw-feeding mechanism (6) that delivers screws to a designated area, a three-axis drive mechanism (7) that drives the screw-driving mechanism (8) to move to the designated area, the screw-driving mechanism (8) picks up the screw, the three-axis drive mechanism (7) that drives the screw-driving mechanism (8) to move above the wire harness assembly, and the screw-driving mechanism (8) drives the screw into the wire harness assembly; the pressure plate (4) is provided with a second through hole (13) above the screw-driving point of the wire harness assembly for the driving end of the screw-driving mechanism (8) and for the screw to pass through; The pressure plate (4) includes a support plate (41), which is fixedly installed at the driving end of the pressing mechanism (3). A second through hole (13) is provided in the support plate (41), and the second through hole (13) accounts for 30%-50% of the support plate (41). An adjusting plate (42) is slidably disposed on the support plate (41) above the second through hole (13). The adjusting plate (42) covers the second through hole (13). A plurality of third through holes (14) are spaced apart on the adjusting plate (42). The plurality of third through holes (14) slidably cover the second through hole (13). A second fixing member (24) for fixing the adjusting plate (42) is provided on the support plate (41). The third perforations (14) are linearly spaced on the adjustment plate (42). There are multiple rows of the third perforations (14). The connecting part between two adjacent third perforations (14) in a row is located in the middle of the third perforations (14) in an adjacent row. The multiple third perforations (14) cover different areas of the second perforation (13) by sliding the adjustment plate (42).

2. The automatic screw installation device according to claim 1, characterized in that: The clamping mechanism (3) includes a first driving member (31), a second driving member (32), and a first sliding plate (33). The first driving member (31) is fixedly mounted on the frame (1), and the first sliding plate (33) is slidably mounted on the frame (1) and fixedly connected to the driving end of the first driving member (31). The first driving member (31) drives the first sliding plate (33) to slide in the direction of approaching or moving away from the tooling (2). The second driving member (32) is mounted on the first sliding plate (33). The pressure plate (4) is mounted on the driving end of the second driving member (32), and the second driving member (32) drives the pressure plate (4) to rise and fall in the direction of approaching or moving away from the tooling (2).

3. The automatic screw installation device according to claim 1, characterized in that: The nail feeding mechanism (6) includes a nail feeding base (61), a receiving platform (62), a third driving member (63), and a nail feeder (64). The nail feeding base (61) and the third driving member (63) are both mounted on the frame (1). The receiving platform (62) is slidably mounted inside the nail feeding base (61). The nail feeder (64) delivers the screws to the receiving platform (62) through a hose (18). The driving end of the third driving member (63) is fixedly connected to the receiving platform (62) and drives the receiving platform (62) to move to a designated area.

4. The automatic screw installation device according to claim 1, characterized in that: The three-axis drive mechanism (7) includes a support frame (71), an X-axis drive unit (72), a Y-axis drive unit (73), and a Z-axis drive unit (74). The support frame (71) is mounted on the frame (1), the Y-axis drive unit (73) is mounted on the support frame (71), the X-axis drive unit (72) is mounted at the drive end of the Y-axis drive unit (73), the Z-axis drive unit (74) is mounted at the drive end of the X-axis drive unit (72), and the nailing mechanism (8) is mounted at the drive end of the Z-axis drive unit (74).

5. The automatic screw installation device according to claim 4, characterized in that: The nailing mechanism (8) includes a mounting plate (81), a fourth driving member (82), a lifting rod (83), a first slider (84), a second slider (85), a screw gun (86), and a suction sleeve (87). The mounting plate (81) is fixedly mounted on the driving end of the Z-axis driving unit (74). The fourth driving member (82) is mounted on the top of the mounting plate (81). The lifting rod (83) is fixedly mounted on the driving end of the fourth driving member (82), and the fourth driving member (82) drives the lifting rod (83) to move up and down. The first slider (84) is fixedly mounted on the lifting rod. The screw gun (86) is fixedly mounted on the first slider (84) and slides on the lifting rod (83) and is located below the first slider (84). The bottom end of the mounting plate (81) is provided with a baffle (10) that abuts against the second slider (85). The suction sleeve (87) is provided on the second slider (85). The head of the screw gun (86) slides through the first slider (84) and the suction sleeve (87), and the suction sleeve (87) slides through the second through hole (13).

6. The automatic screw installation device according to claim 5, characterized in that: The lifting rod (83) is provided with an elastic element (11), and the two ends of the elastic element (11) are fixedly connected to the first slider (84) and the second slider (85).

7. The automatic screw installation device according to claim 1, characterized in that: The pressure block (5) is rotatably mounted on the pressure plate (4), and the pressure plate (4) is provided with a first fixing member (12) for fixing the pressure block (5).

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