Mechanical arm bolt pulling-out mechanism applied to automobile parts

Abstract

The utility model relates to a mechanical arm bolt pulling-out mechanism applied to automobile parts, and relates to the technical field of automobile production, and the mechanical arm bolt pulling-out mechanism comprises a workbench, a driving assembly and a locking device; a supporting arm is arranged at the position of the working table, and the supporting arm can rotate along the working table; the driving assembly comprises a fixing plate, a first driving cylinder, a first motor, a mounting plate and a buffer spring, the fixing plate is rotationally connected with the supporting arm, the first driving cylinder is fixedly connected with the fixing plate, the first motor is fixed to the output end of the first driving cylinder, the mounting plate is fixed to the output end of the first motor, and the buffer spring is fixed to the output end of the first motor. The buffer spring is arranged on the first driving cylinder in a sleeving manner, one end of the buffer spring is fixedly connected with the fixing plate, and the other end of the buffer spring is fixedly connected with the mounting plate; and the locking device is mounted on the mounting plate and is used for fixing a bolt. The bolt pulling-out device has the effect that damage to the mechanical arm caused by inertia can be reduced when the bolt is pulled out.

Description

Technical Field

[0001] The present application relates to the technical field of automobile production, and particularly relates to a robotic arm bolt extraction mechanism applied to automobile parts. Background Art

[0002] Automobiles play an important role in people's daily lives and can help people move over long distances. An automobile is composed of multiple systems such as a drive system, a suspension system, and a control system. When assembling a vehicle, when related structures are connected, bolt connection is usually used for corresponding connection.

[0003] In related technologies, in order to replace operators to extract or insert bolts, a manipulator is usually used to perform the extraction or insertion operation of bolts. A rotating device, a lifting device, and a clamping part are provided at the end of the manipulator. The rotating device drives the clamping part to rotate to screw the bolt, the lifting device drives the clamping part to lift to extract the bolt, and the clamping part fixes the bolt.

[0004] In view of the above related technologies, when the manipulator pulls the bolt, the bolt may become stripped or detached from the robotic arm. At this time, a certain inertia will be brought, causing certain damage to the machine, which is not conducive to the stable operation of the machine. Utility Model Content

[0005] In order to reduce the damage caused by inertia to the robotic arm when performing the bolt extraction operation, the present application provides a robotic arm bolt extraction mechanism applied to automobile parts.

[0006] The present application provides a robotic arm bolt extraction mechanism applied to automobile parts, adopting the following technical solutions:

[0007] A robotic arm bolt extraction mechanism applied to automobile parts includes a workbench, a drive assembly, and a locking device; a support arm is provided at the workbench, and the support arm can rotate along the workbench;

[0008] The drive assembly includes a fixing plate, a first driving cylinder, a first motor, a mounting plate, and a buffer spring. The fixing plate is rotatably connected to the support arm, the first driving cylinder is fixedly connected to the fixing plate, and the first motor is fixed to the output end of the first driving cylinder. The mounting plate is fixed to the output end of the first motor, the buffer spring is sleeved on the first driving cylinder, one end of the buffer spring is fixedly connected to the fixing plate, and the other end of the buffer spring is fixedly connected to the mounting plate;

[0009] The locking device is installed on the mounting plate and is used to fix the bolt.

[0010] By adopting the above technical solution, the workbench provides support for the installation of the support arm, and the support arm can provide installation support for the driving component and the locking device. The support arm can transfer the locking device to a suitable position, and then the locking device can fix the bolt. The mounting plate provides support for the installation of the first motor. The first motor drives the mounting plate to rotate, thereby driving the locking device to screw the bolt. The fixing plate provides support for the installation of the first driving cylinder. The first driving cylinder drives the first motor to shift, thereby pulling out or inserting the bolt. The buffer spring can effectively reduce the impact of the mounting plate on the fixing plate when the bolt is pulled out, and further reduce the impact of inertia on the support arm, ensuring the overall safety of the device.

[0011] Optionally, a sensor is provided at the buffer spring, and the sensor is fixedly connected to the buffer spring.

[0012] By adopting the above technical solution, the setting of the sensor can schedule the driving force when the bolt is pulled out, prompt the first driving cylinder at the critical value, avoid the continuous operation of the first driving cylinder, and cause a large impact when the bolt is pulled out.

[0013] Optionally, there are two locking devices, and the two locking devices are symmetrically arranged;

[0014] The locking device includes a support plate. The support plate is provided with a sliding groove. The two support plates slide towards each other along the sliding groove. The end faces of the support plates facing each other are provided with a locking component, and the locking component can lock the bolt.

[0015] By adopting the above technical solution, the sliding groove provides a limit for the sliding of the support plate. The support plates slide towards each other or away from each other, and thus can lock bolts of different sizes, improving the applicability of the device.

[0016] Optionally, the support plate is provided with a chute. A driving part is provided at the chute. The driving part includes a rack, a moving plate, a second motor and a gear. The rack is parallel to the chute and is fixedly connected to the support plate. The moving plate slides along the chute. The second motor is fixed to the moving plate and the second motor is used to drive the gear to rotate. The gear meshes with the rack; the locking component is installed on the moving plate.

[0017] By adopting the above technical solution, the chute limits the sliding direction of the moving plate. The rack is fixedly connected to the support plate. The first motor drives the gear to rotate. The gear meshes with the rack, so that the gear can slide along the length direction of the rack, and at the same time, the moving plate can slide along the length direction of the chute. The moving plate provides support for the installation of the locking component, so that the locking component can reach different positions to limit different bolts.

[0018] Optionally, the moving plate is provided with an avoidance groove for accommodating the rack.

[0019] By adopting the above technical solution, the avoidance groove provides an installation space for the rack. At the same time, the setting of the avoidance groove can limit the sliding direction of the moving plate to a certain extent, further ensuring the stable connection between the moving plate and the support plate.

[0020] Optionally, the locking assembly includes a mounting block. The end face of the mounting block that arcs towards the approaching side is provided with a mounting groove. When the two mounting blocks are attached, the two mounting grooves communicate. The mounting groove is provided with fitting components arranged at intervals. The fitting component includes a telescopic rod and an abutting plate. One end of the telescopic rod is fixedly connected to the mounting block, and the other end is fixedly connected to the abutting plate.

[0021] By adopting the above technical solution, when the two support plates slide towards each other, the two mounting blocks can be attached, and at the same time, the two mounting grooves can be attached, so that the mounting grooves can enclose a complete space. Adjust the length of the telescopic rod so that the abutting plate can abut against the side wall of the bolt. At the same time, the first motor drives the mounting plate to rotate, and then the bolt can be rotated to realize the screwing operation of the bolt.

[0022] Optionally, the two ends of the mounting block in the opening direction are respectively provided with a plug-in block and a plug-in groove. The plug-in block is fixedly connected to the mounting block, and the plug-in groove is used for accommodating the plug-in block.

[0023] By adopting the above technical solution, the setting of the plug-in block and the plug-in groove can limit the two mounting blocks when they are attached, ensure the correct meshing of the two mounting blocks, and thus ensure the stable meshing of the bolt.

[0024] Optionally, the end face of the abutting plate away from the telescopic rod is provided with a friction pad, and the friction pad is fixedly connected to the abutting plate.

[0025] By adopting the above technical solution, the friction pad can further enhance the connection stability of the abutting plate to the end of the bolt, and thus can stably perform the screwing operation and pulling-out operation of the bolt.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. By arranging the buffer spring, it is possible to buffer the inertial impact generated during the screwing operation and pulling-out operation of the bolt, avoiding damage to the overall device due to excessive inertia;

[0028] 2. By arranging the sensor, it is possible to control the working efficiency of the first driving cylinder and the first motor at the critical node of pulling out the bolt, reducing the inertia at the moment of pulling out;

[0029] 3. By setting the fitting component, bolts of different sizes can be connected, improving the applicability of the device. Description of the Drawings

[0030] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the driving component structure;

[0032] Figure 3 is a schematic diagram of the locking device structure.

[0033] Reference numerals: 1, workbench; 11, conveying mechanism; 12, manipulator; 121, base; 122, support base; 123, support arm; 124, fixing groove; 2, driving component; 21, fixing plate; 22, first driving cylinder; 23, first motor; 24, mounting plate; 25, buffer spring; 26, sensor; 27, sliding groove; 28, sliding block; 29, second driving cylinder; 3, locking device; 31, support plate; 311, chute; 32, driving part; 321, rack; 322, moving plate; 323, second motor; 324, gear; 325, avoidance groove; 33, locking component; 331, mounting block; 332, mounting groove; 333, insertion slot; 334, insertion block; 34, fitting component; 341, telescopic rod; 342, abutting plate; 343, friction pad. Detailed Embodiment

[0034] The following will Figures 1-3 further describe the present application in detail.

[0035] An embodiment of the present application discloses a mechanical arm bolt extraction mechanism applied to automotive parts.

[0036] Referring to Figure 1 , a mechanical arm bolt extraction mechanism applied to automotive parts includes a workbench 1, a driving component 2, and a locking device 3.

[0037] Referring to Figure 1 , in this embodiment, the workbench 1 is horizontally arranged and fixed to the ground by anchor bolts. A conveying mechanism 11 is provided on the top of the workbench 1. In this embodiment, the conveying mechanism 11 is preferably a conveyor belt, and the conveyor belt is used to drive the workpiece to move along the length direction of the conveyor belt.

[0038] Referring to Figure 1, the workbench 1 is provided with workstations, and each workstation is provided with a manipulator 12. The manipulator 12 includes a base 121, a support base 122 and a support arm 123. The base 121 is fixedly connected to the workbench 1 by means of screws. The support base 122 is rotatably connected to the base 121 by means of a spherical hinge, and the support base 122 is equipped with a rotary motor for driving the support base 122 to rotate along the base 121. A fixing groove 124 is provided at the top of the support base 122. The support arm 123 passes through the fixing groove 124 and is rotatably connected to the support base 122 by means of a rotating shaft. Each support arm 123 is equipped with a rotary motor for driving the support arm 123 to rotate along the support base 122.

[0039] Referring to Figure 1 and Figure 2 , the driving assembly 2 is installed at one end of the support arm 123 away from the support base 122. The driving assembly 2 includes a fixing plate 21, a first driving cylinder 22, a first motor 23, a mounting plate 24 and a buffer spring 25. The fixing plate 21 is rotatably connected to the support arm 123 by means of a spherical hinge seat, and each fixing plate 21 is equipped with a rotary motor for driving the fixing plate 21 to rotate along the support arm 123. In this embodiment, the first driving cylinder 22 is preferably a cylinder, and the driving direction of the first driving cylinder 22 is perpendicular to the plane of the fixing plate 21. The outer shell of the first driving cylinder 22 is fixedly connected to the fixing plate 21 by means of screws. In this embodiment, the first motor 23 is preferably a servo motor, and the outer shell of the first motor 23 is fixedly connected to the output end of the first driving cylinder 22 by means of screws. The axis direction of the output shaft of the first motor 23 is consistent with the driving direction of the first driving cylinder 22. The plate surface of the mounting plate 24 is parallel to the plate surface of the fixing plate 21. In this embodiment, the mounting plate 24 is preferably a rectangular plate. The mounting plate 24 is coaxially fixedly connected to the output shaft of the first motor 23 by means of a key connection. The buffer spring 25 is located on one side where the fixing plate 21 and the mounting plate 24 are close to each other. The buffer spring 25 is sleeved on the outer shell of the first motor 23, and the telescopic direction of the buffer spring 25 is parallel to the driving direction of the first driving cylinder 22. One end of the buffer spring 25 is fixedly connected to the fixing plate 21 by means of screws, and the other end is fixedly connected to the mounting plate 24 by means of screws.

[0040] Referring to Figure 1 and Figure 2 , a sensor 26 is provided outside the buffer spring 25. The sensor 26 is fixedly connected to the buffer spring 25 by means of screws.

[0041] Referring to Figure 1 and Figure 2, sliding grooves 27 are provided at both ends of the mounting plate 24 in the length direction. The two sliding grooves 27 are collinear, and the length direction of the sliding grooves 27 is parallel to the length direction of the mounting plate 24. In this embodiment, the sliding groove 27 is preferably a T-shaped groove. A sliding block 28 is provided in the inner cavity of the sliding groove 27, and the sliding block 28 can slide along the sliding groove 27. Each sliding groove 27 is provided with a second driving cylinder 29. In this embodiment, the second driving cylinder 29 is preferably a cylinder. The driving direction of the second driving cylinder 29 is parallel to the length direction of the sliding groove 27. The outer shell of the second driving cylinder 29 is fixedly connected to the mounting plate 24 by means of screws, and the output end of the second driving cylinder 29 is fixedly connected to the sliding block 28 by means of a bracket connection. In this embodiment, the two second driving cylinders 29 are electrically connected and simultaneously drive the two sliding blocks 28 to slide in the direction of approaching or separating from each other.

[0042] Refer to Figure 1 , Figure 2 and Figure 3 , there are two locking devices 3. The two locking devices 3 are respectively installed on the two sliding blocks 28, and the two locking devices 3 are symmetrically arranged. The locking device 3 includes a support plate 31. The length direction of the support plate 31 is perpendicular to the sliding block 28, and the support plate 31 is fixedly connected to the sliding block 28 by means of welding. The end faces of the two support plates 31 close to each other are provided with sliding grooves 311. In this embodiment, the length direction of the sliding grooves 311 is parallel to the length direction of the support plate 31.

[0043] Refer to Figure 1 , Figure 2 and Figure 3 , a driving part 32 is provided in the inner cavity of the sliding groove 311. The driving part 32 includes a rack 321, a moving plate 322, a second motor 323 and a gear 324. The rack 321 is fixedly connected to the support plate 31 by means of welding, and the length direction of the rack 321 is parallel to the length direction of the support plate 31. The side wall of the moving plate 322 is attached to the side wall of the sliding groove 311, and the moving plate 322 is provided with an avoidance groove 325. In this embodiment, the avoidance groove 325 is used to accommodate the rack 321. In this embodiment, the second motor 323 is preferably a servo motor. The outer shell of the second motor 323 is fixedly connected to the moving plate 322 by means of screws. The gear 324 is fixedly connected to the output shaft of the second motor 323 by means of a key connection, and the gear 324 and the rack 321 are meshed with each other.

[0044] Refer to Figure 1 , Figure 2 and Figure 3, locking components 33 are provided at one ends of the end faces of the two moving plates 322 that are close to each other and away from the mounting plate 24. The two locking components 33 are symmetrically arranged. The locking component 33 includes a mounting block 331. In this embodiment, the mounting block 331 is preferably a semi-circular block, and when the two mounting blocks 331 are fitted together, they form a complete circular block. The mounting block 331 is fixedly connected to the moving plate 322 by welding. Mounting grooves 332 are provided on the end faces of the two mounting blocks 331 that are close to each other. In this embodiment, when the two mounting blocks 331 are fitted together, the two mounting grooves 332 communicate, and the two mounting grooves 332 form a complete hexagon.

[0045] Referring to Figure 1 , Figure 2 and Figure 3 , insertion slots 333 and insertion blocks 334 are respectively provided on both sides in the opening direction of the mounting groove 332. The insertion block 334 is fixedly connected to the mounting block 331 by welding. In this embodiment, the insertion slot 333 is used to accommodate the insertion block 334.

[0046] Referring to Figure 1 , Figure 2 and Figure 3 , a fitting component 34 is provided on the side wall of each mounting groove 332. The fitting component 34 includes a telescopic rod 341 and an abutting plate 342. In this embodiment, the length of the telescopic rod 341 is electrically controllable. The length direction of the telescopic rod 341 is perpendicular to the plane where the mounting block 331 is located. The outer shell of the telescopic rod 341 is fixedly connected to the mounting block 331 by screwing. The abutting plate 342 is perpendicular to the telescopic rod 341, and the abutting plate 342 is fixedly connected to the output end of the telescopic rod 341 by screwing. A friction pad 343 is provided at one end of the abutting plate 342 away from the telescopic rod 341. The friction pad 343 is fixedly connected to the telescopic rod 341 by screwing.

[0047] The implementation principle of a mechanical arm bolt extraction mechanism applied to automotive parts in an embodiment of the present application is as follows: The controller controls the angles of the support base 122 and the support arm 123 to make the fixing plate 21 in a suitable position. The first driving cylinder 22 drives the mounting plate 24 to slide to complete the plugging and unplugging operation of the bolt. The first motor 23 drives the mounting plate 24 to rotate to complete the screwing operation of the bolt. The sensor 26 can control the landing point of the extracted bolt and control the operation of the first driving cylinder 22 and the first motor 23. The buffer spring 25 can buffer the inertial impact.

[0048] During the process of tightening the bolt, the second driving cylinder 29 drives the sliding block 28 to slide in the direction of approaching or moving away from each other, and at the same time drives the support plate 31 to slide. The second motor 323 drives the moving plate 322 to slide along the length direction of the support plate 31 through the cooperation of the gear 324 and the rack 321. When the two mounting blocks 331 are in contact, the plug block 334 is located in the plug slot 333, which can limit the two mounting blocks 331. Subsequently, the telescopic rod 341 is adjusted so that the abutting plate 342 and the friction pad 343 can be in contact with the side wall of the bolt.

[0049] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A mechanical arm bolt extraction mechanism applied to automotive parts, characterized in that: It includes a workbench (1), a driving component (2) and a locking device (3); a support arm (123) is provided at the workbench (1), and the support arm (123) can rotate along the workbench (1). The driving component (2) includes a fixing plate (21), a first driving cylinder (22), a first motor (23), a mounting plate (24) and a buffer spring (25). The fixing plate (21) is rotatably connected to the support arm (123). The first driving cylinder (22) is fixedly connected to the fixing plate (21), and the first motor (23) is fixed to the output end of the first driving cylinder (22). The mounting plate (24) is fixed to the output end of the first motor (23). The buffer spring (25) is sleeved on the first driving cylinder (22). One end of the buffer spring (25) is fixedly connected to the fixing plate (21), and the other end of the buffer spring (25) is fixedly connected to the mounting plate (24). The locking device (3) is installed on the mounting plate (24), and the locking device (3) is used to fix bolts.

2. The mechanical arm bolt extraction mechanism applied to automotive parts according to claim 1, wherein: A sensor (26) is provided at the buffer spring (25), and the sensor (26) is fixedly connected to the buffer spring (25).

3. The mechanical arm bolt extraction mechanism applied to automotive parts according to claim 1, characterized in that: There are two locking devices (3), and the two locking devices (3) are symmetrically arranged. The locking device (3) includes a support plate (31). The support plate (31) is provided with a sliding groove (27). The two support plates (31) slide towards each other along the sliding groove (27). The end faces of the support plates (31) facing each other are provided with a locking component (33), and the locking component (33) can lock the bolts.

4. The mechanical arm bolt extraction mechanism applied to automotive parts according to claim 3, characterized in that: The support plate (31) is provided with a sliding groove (311). A driving part (32) is provided at the sliding groove (311). The driving part (32) includes a rack (321), a moving plate (322), a second motor (323) and a gear (324). The rack (321) is parallel to the sliding groove (311), and the rack (321) is fixedly connected to the support plate (31). The moving plate (322) slides along the sliding groove (311). The second motor (323) is fixed to the moving plate (322), and the second motor (323) is used to drive the gear (324) to rotate. The gear (324) meshes with the rack (321). The locking component (33) is installed on the moving plate (322).

5. The mechanical arm bolt extraction mechanism applied to automotive parts according to claim 4, characterized in that: The moving plate (322) is provided with an avoidance groove (325), and the avoidance groove (325) is used to accommodate the rack (321).

6. The mechanical arm bolt extraction mechanism applied to automotive parts according to claim 4, characterized in that: The locking assembly (33) includes a mounting block (331). An installation groove (332) is provided on the end face of the mounting block (331) that faces the arc in a closer direction. When the two mounting blocks (331) are attached to each other, the two installation grooves (332) communicate with each other. Fitting components (34) are arranged at intervals in the installation groove (332). The fitting component (34) includes a telescopic rod (341) and an abutting plate (342). One end of the telescopic rod (341) is fixedly connected to the mounting block (331), and the other end is fixedly connected to the abutting plate (342).

7. The mechanical arm bolt extraction mechanism for automotive parts according to claim 6, characterized in that: The mounting block (331) is respectively provided with a plug-in block (334) and a plug-in groove (333) at both ends in the opening direction. The plug-in block (334) is fixedly connected to the mounting block (331), and the plug-in groove (333) is used to accommodate the plug-in block (334).

8. The mechanical arm bolt extraction mechanism for automotive parts according to claim 6, characterized in that: A friction pad (343) is provided on the end face of the abutting plate (342) away from the telescopic rod (341). The friction pad (343) is fixedly connected to the abutting plate (342).

Images