Automatic bushing installation device

Abstract

The present invention discloses an automatic bushing installation device, which relates to the field of bushing installation, and comprises a work frame, wherein an X-axis guide frame is arranged on the work frame, a Y-axis guide frame is arranged on the X-axis guide frame, and an installation unit is arranged on the Y-axis guide frame, wherein the installation unit comprises a mounting plate slidably connected to the Y-axis guide frame, wherein a mounting cylinder is mounted on the mounting plate, a guide rod is fixedly mounted on the bottom of the telescopic end of the mounting cylinder, a mounting column is mounted on the bottom of the guide rod, and the mounting column comprises a pressure arranged on the top. The automatic bushing installation device transports the workpiece through a conveying roller, and pre-places the bushing at the conveying front end of the installation unit, so that when the workpiece arrives at the installation unit, the installation unit can directly install the bushing, thereby effectively reducing the complexity of the action of the installation unit, and at the same time, the bushing can be continuously installed on the workpiece, so that the installation efficiency of the bushing can be effectively improved.

Description

Technical Field

[0001] The invention relates to a bushing installation technology, and in particular to an automatic bushing installation device. Background Art

[0002] A bushing is a part used to reduce wear, provide lubrication or support components. It is usually in the form of a ring and is installed in a hole to help reduce friction and extend the life of machine parts.

[0003] For larger molds or other parts such as shells, when installing the bushing, they are grabbed by a suspension device and lifted to the load-bearing platform on the bushing automatic installation equipment, and the bushing is automatically installed by the installation unit on the bushing automatic installation equipment. However, before installation, the installation unit also needs to grab the bushing and then install the bushing in the hole on the part to be installed. As a result, the installation unit needs to perform multiple actions when installing each bushing during the installation process, resulting in a relatively low installation efficiency of the bushing, which needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a bushing automatic installation device to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bushing automatic installation device, comprising a working frame, an X-axis guide frame is arranged on the working frame, a Y-axis guide frame is arranged on the X-axis guide frame, a mounting unit is arranged on the Y-axis guide frame, the mounting unit comprises a mounting plate slidably connected to the Y-axis guide frame, a mounting cylinder is mounted on the mounting plate, a guide rod is fixedly mounted on the bottom of the telescopic end of the mounting cylinder, a mounting column is mounted on the bottom of the guide rod, the mounting column comprises a pressure plate arranged on the top, a positioning column is arranged on the bottom surface of the pressure plate, a guide plate is mounted on the side of the mounting plate, and the guide rod is slidably connected to the inner side surface of the guide plate;

[0006] A conveying platform is arranged outside the work frame, and a plurality of conveying rollers are arranged equidistantly along the length direction of the conveying platform, and the conveying rollers are driven by a motor. Two groups of supporting legs are arranged at intervals on both sides of the conveying platform along the conveying direction of the conveying rollers, and a cross plate is arranged between the supporting legs in the same group on both sides, and a plurality of containing cylinders are arranged equidistantly along the length direction of the cross plate, and a plurality of bushings are placed in the containing cylinders, and a control unit is arranged outside the containing cylinders, and the control unit is used for controlling the bushings in the containing cylinders to fall down in sequence.

[0007] Furthermore, the control unit includes an installation box fixedly installed on the bottom of the side of the containing cylinder, and sliding grooves are respectively provided at the upper and lower ends of the interior of the installation box, and the inner sides of the two sliding grooves are respectively slidably connected with an upper partition and a lower partition, and the surfaces of the upper partition and the lower partition facing each other are both provided with tooth grooves, and a gear cavity is provided inside the installation box, and the inner side surface of the gear cavity is rotatably connected with a gear, a long groove is provided on the top of the installation box, and an extension plate is fixedly connected to the top of the upper partition, and a control cylinder is installed on the outside of the installation box, and a through groove corresponding to the upper partition and the lower partition is provided on the side of the containing cylinder.

[0008] Furthermore, the upper and lower groups of tooth grooves are respectively meshed with the upper and lower ends of the gear, the extension plate is slidably connected to the inner side of the long groove, the telescopic end of the control cylinder is fixedly connected to the extension plate, and the two sliding grooves are connected to the inside of the containing tube through the through groove.

[0009] Furthermore, the bushing includes an extended flange and an embedded sleeve, the distance between the top of the upper partition and the top of the lower partition is adapted to the height of the bushing, the position and specifications of the upper and lower partitions correspond to those of the bushing, and the diameter of the positioning column is smaller than the inner diameter of the bushing.

[0010] Furthermore, a cross groove is provided inside the cross plate and passes through one end thereof, a sliding sleeve is fixedly connected to the outside of the containing cylinder, the sliding sleeve is slidably connected to the inner side surface of the cross groove, a number of serrated grooves are equidistantly provided at both ends of the inner wall of the cross groove along its length direction, a vertical groove is provided on the inner side surface of the sliding sleeve, a push plate is slidably connected to the inner side surface of the vertical groove, a movable groove is provided at the bottom of the vertical groove, a pressure plate is slidably connected to the inner side surface of the movable groove, limiting serrations are symmetrically arranged on both sides of the bottom of the pressure plate, an extrusion spring is fixedly connected between the top of the pressure plate and the inner wall of the movable groove, a straight groove connected to the vertical groove is provided on the side surface of the sliding sleeve, a convex plate is slidably connected to the inner side surface of the straight groove, and the convex plate is fixedly connected to the push plate.

[0011] Furthermore, the shape and specification of the limiting saw teeth are adapted to the sawtooth groove, and the limiting saw teeth can be embedded in the sawtooth groove.

[0012] Furthermore, a short groove is provided on the inner wall of the vertical groove, a connecting spring is fixedly connected to the inner wall of the short groove, a clamping block is fixedly connected to the end of the connecting spring, a push block is fixedly connected to the surface of the clamping block, and an adapting groove adapted to the push block is provided on the side of the sliding sleeve.

[0013] Furthermore, the position of the clamping block is adapted to the push plate, and when the bottom surface of the pressure plate abuts against the bottom surface of the movable groove, the push block can be slidably connected to the top of the push plate.

[0014] Furthermore, a hydraulic cylinder is fixedly installed on the outside of the support leg, an adjustment groove is provided on the inner side surface of the support leg, an extension leg is slidably connected to the inner side surface of the adjustment groove, the top of the extension leg is fixedly connected to the cross plate, a guide groove connected to the adjustment groove is provided on the surface of the support leg, a connecting block is fixedly connected to the surface of the extension leg, and the connecting block is slidably connected to the inner side surface of the guide groove.

[0015] Furthermore, the telescopic end of the hydraulic cylinder is fixedly connected to the connecting block, and a bending groove is provided on the surface of the extension leg on one side of the cross groove through-end, and the position and size specifications of the bending groove are compatible with the containing tube.

[0016] Compared with the prior art, the automatic bushing installation device provided by the present invention has the following beneficial effects:

[0017] 1. The automatic bushing installation device conveys the workpiece through the conveying roller and pre-places the bushing at the conveying front end of the installation unit, so that when the workpiece arrives at the installation unit, the installation unit can directly install the bushing, thereby effectively reducing the complexity of the installation unit action, and at the same time, the bushing can be installed on the workpiece continuously, so that the installation efficiency of the bushing can be effectively improved.

[0018] 2. The automatic installation device for the bushing can adjust the position of the containing tube as needed through the mutual cooperation between the cross groove, the sliding sleeve, the pressure plate, the push plate, the serrated groove and the limiting serrations, and can be disassembled and separated from the cross plate. Therefore, in actual application, the appropriate number of containing tubes can be selected according to the position and number of actual holes on the workpiece to be installed with the bushing, thereby making the placement process of the bushing more convenient.

[0019] 3. The automatic bushing installation device, by setting two rows of containing tubes, can meet the placement needs of bushings for multiple holes on the same straight line when the distance between two adjacent containing tubes on the same row cannot meet the needs during actual application, thereby making it more flexible to use.

[0020] 4. The automatic bushing installation device limits the vertical movement of the push plate through the block, so that the limiting saw teeth cannot withdraw from the sawtooth groove, thereby effectively ensuring the stability of the containing tube during normal working.

[0021] 5. The automatic bushing installation device can adjust the height of the bottom of the horizontal plate and the containing tube as needed during actual application through the cooperation between the hydraulic cylinder and the extension legs, so that the bushing falling from the bottom of the containing tube can fall smoothly into the hole on the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the connection structure of the containing cylinder, the horizontal plate and the supporting legs provided in an embodiment of the present invention;

[0025] Figure 3 The embodiment of the present invention provides Figure 2 The enlarged structural diagram at A in the middle;

[0026] Figure 4 A schematic diagram of the connection structure between the sliding sleeve and the containing cylinder provided in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of a partial cross-sectional structure of a containing tube provided in an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of a partial cross-sectional structure of a sliding sleeve provided in an embodiment of the present invention;

[0029] Figure 7 The embodiment of the present invention provides Figure 6 The enlarged structural diagram at B in the middle;

[0030] Figure 8 The embodiment of the present invention provides Figure 6 Enlarged structural diagram at point C in the middle.

[0031] Description of reference numerals:

[0032] 1. Work frame; 101. X-axis guide frame; 102. Y-axis guide frame; 2. Mounting unit; 21. Mounting plate; 22. Mounting cylinder; 23. Guide rod; 24. Mounting column; 25. Guide plate; 3. Conveyor platform; 31. Conveyor roller; 32. Support leg; 33. Horizontal plate; 34. Container; 4. Control unit; 41. Mounting box; 42. Sliding groove; 43. Upper partition; 44. Lower partition; 45. Tooth groove ; 46. Gear; 47. Control cylinder; 48. Through slot; 5. Cross slot; 51. Sliding sleeve; 52. Sawtooth slot; 53. Vertical slot; 54. Push plate; 55. Moving slot; 56. Press plate; 57. Limiting serration; 58. Extrusion spring; 59. Convex plate; 6. Short slot; 61. Connecting spring; 62. Block; 63. Push block; 7. Hydraulic cylinder; 71. Extension leg; 72. Connecting block; 73. Bending slot. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Example

[0034] See also Figure 1-Figure 6 , a bushing automatic installation device, including a working frame 1, an X-axis guide frame 101 is arranged on the working frame 1, a Y-axis guide frame 102 is arranged on the X-axis guide frame 101, and an installation unit 2 is arranged on the Y-axis guide frame 102, the installation unit 2 includes a mounting plate 21 slidably connected to the Y-axis guide frame 102, a mounting cylinder 22 is installed on the mounting plate 21, a guide rod 23 is fixedly installed at the bottom of the telescopic end of the mounting cylinder 22, a mounting column 24 is installed at the bottom of the guide rod 23, the mounting column 24 includes a pressure plate arranged at the top, and a positioning column is arranged on the bottom surface of the pressure plate, a guide plate 25 is installed on the side of the mounting plate 21, and the guide rod 23 is slidably connected to the inner side surface of the guide plate 25;

[0035] A conveying platform 3 is arranged outside the work frame 1, and a plurality of conveying rollers 31 are arranged equidistantly on the conveying platform 3 along its length direction, and the conveying rollers 31 are driven by a motor, and two groups of supporting legs 32 are arranged at intervals on both sides of the conveying platform 3 along the conveying direction of the conveying rollers 31, and a cross plate 33 is arranged between the same group of supporting legs 32 on both sides, and a plurality of containing cylinders 34 are arranged equidistantly on the cross plate 33 along its length direction, and a plurality of bushings are placed in the containing cylinder 34, and a control unit 4 is arranged outside the containing cylinder 34, and the control unit 4 is used to control the bushings in the containing cylinder 34 to fall sequentially.

[0036] It should be noted that a Y-axial drive unit is arranged on the outside of the mounting plate 21, and the Y-axial drive unit can drive the mounting plate 21 to move along the length direction of the Y-axis guide frame 102. An X-axial drive unit is arranged on the outside of the Y-axis guide frame 102, and the X-axial drive unit can drive the Y-axis guide frame 102 to move along the length direction of the X-axis guide frame 101.

[0037] In this embodiment, the control unit 4 includes an installation box 41 fixedly installed on the bottom of the side of the containing cylinder 34, and sliding grooves 42 are respectively provided at the upper and lower ends of the interior of the installation box 41. The inner sides of the two sliding grooves 42 are respectively slidably connected with an upper partition 43 and a lower partition 44, and the surfaces of the upper partition 43 and the lower partition 44 facing each other are both provided with tooth grooves 45. A gear cavity is provided inside the installation box 41, and a gear 46 is rotatably connected to the inner side of the gear cavity. A long groove is provided on the top of the installation box 41, and an extension plate is fixedly connected to the top of the upper partition 43. A control cylinder 47 is installed on the outside of the installation box 41, and a through groove 48 corresponding to the upper partition 43 and the lower partition 44 is provided on the side of the containing cylinder 34.

[0038] In this embodiment, the upper and lower sets of tooth grooves 45 are respectively meshed with the upper and lower ends of the gear 46, the extension plate is slidably connected to the inner side of the long groove, the telescopic end of the control cylinder 47 is fixedly connected to the extension plate, and the two sliding grooves 42 are connected to the inside of the containing tube 34 through the through groove 48.

[0039] Furthermore, the bushing includes an extended flange and an embedded sleeve, the distance between the top of the upper partition 43 and the top of the lower partition 44 is adapted to the height of the bushing, the position and specifications of the upper partition 43 and the lower partition 44 correspond to the bushing, and the diameter of the positioning column is smaller than the inner diameter of the bushing.

[0040] It should be noted that the diameter of the positioning column is set smaller than the inner diameter of the bushing, so that the positioning column can stably guide the bushing that is slightly deflected during the placement process, so that with the cooperation of the pressure plate, the bushing can be smoothly installed in the hole on the workpiece.

[0041] It should be noted that when the lower partition 44 contacts the bottom of the extended flange on the lowest bushing and supports it, the upper partition 43 moves to its end to enter the inside of the through groove 48 so that it does not contact the bushing. When the control cylinder 47 controls the movement of the upper partition 43, and with the cooperation of the gear 46 and the tooth groove 45, the lower partition 44 moves synchronously. Before the lower partition 44 moves to separate from the lowest bushing, the upper partition 43 moves to contact the bottom of the extended flange of the upper bushing, so that it can provide stable support for the bushing.

[0042] It should be supplemented that a control system for controlling the conveying roller 31 and the material discharge of the holding cylinder 34 is provided on the conveying platform 3, and the system includes a PLC controller and multiple groups of infrared sensors, one group of infrared sensors is provided on the conveying platform 3, and corresponds to the position of the horizontal plate 33 on the side away from the mounting unit 2, and is used to determine the arrival of the workpiece, and another group of infrared sensors is provided on the conveying platform 3, and corresponds to the initial position of the mounting unit 2, and is used to determine the arrival of the workpiece;

[0043] It should be further explained that before installing the bushing, the operator needs to set the data according to the specific position of the hole on the workpiece, so that during the operation, after the infrared sensor detects the arrival of the workpiece, the PLC controller can control the conveying roller 31 to transport the workpiece a specified distance, so that the position of the hole can accurately reach the bottom of the corresponding receiving tube 34, and then the PLC controller controls the conveying roller 31 to stop conveying, and controls the control cylinder 47 on the corresponding receiving tube 34 to perform corresponding actions, so that the bushing in the receiving tube 34 can fall into the hole.

[0044] During the working process, the workpiece to be installed with the bushing is placed at the specified position on the conveying roller 31 by the transfer device, and then the workpiece is conveyed by the conveying roller 31. When it reaches the bottom of the cross plate 33, the conveying roller 31 stops conveying, and the control cylinder 47 on the corresponding position of the containing cylinder 34 is started to extend its telescopic end and drive the upper partition 43 to move to contact the bottom of the extended flange at the second to last position of the bottom and support it. In this process, under the cooperation of the gear 46 and the tooth groove 45, the upper partition When the upper and lower partitions 43 move toward the side close to the bushing, the lower partition 44 moves toward the side away from the bushing until the lower partition 44 separates from the bottom bushing. At this time, the bottom bushing lacks support and will separate from the inside of the containing tube 34 and fall into the hole on the workpiece. After the bottom bushing separates, the telescopic end of the control cylinder 47 retracts, so that the upper and lower partitions 43 and 44 move in opposite directions, so that the upper partition 43 can no longer support the bushing, so that it falls to the bottom of the containing tube 34 and is supported by the lower partition 44.

[0045] After all the bushings are placed through the above steps, the workpiece is continuously conveyed forward by the conveying roller 31 until it is at the installation unit 2, and then the X-axis drive source drives the Y-axis guide frame 102 to move along the length direction of the X-axis guide frame 101, and then the Y-axis drive source drives the mounting plate 21 to move along the length direction of the Y-axis guide frame 102, so that the position of the mounting column 24 can correspond to the bushing, and then the telescopic end of the mounting cylinder 22 is extended to make the mounting column 24 move downward, so that the guide column can be inserted into the interior of the bushing, and at the same time, the pressure plate continues to move downward and presses the bushing so that the bushing can be smoothly squeezed into the hole on the workpiece. After the bushing is installed, it is continuously conveyed forward by the conveying roller 31, and at the same time, the workpiece with the bushing placed at the rear is conveyed forward, and the bushing can be installed continuously. Example

[0046] See also Figure 2-Figure 4 , Figure 6-Figure 8 A cross groove 5 running through one end of the cross plate 33 is provided inside the cross plate 33, and a sliding sleeve 51 is fixedly connected to the outside of the containing cylinder 34. The sliding sleeve 51 is slidably connected to the inner side surface of the cross groove 5. A number of serrated grooves 52 are equidistantly provided at both ends of the inner wall of the cross groove 5 along its length direction. A vertical groove 53 is provided on the inner side surface of the sliding sleeve 51, and a push plate 54 is slidably connected to the inner side surface of the vertical groove 53. A moving groove 55 is provided at the bottom of the vertical groove 53, and a pressing plate 56 is slidably connected to the inner side surface of the moving groove 55. Limiting serrations 57 are symmetrically arranged on both sides of the bottom of the pressing plate 56. An extrusion spring 58 is fixedly connected between the top of the pressing plate 56 and the inner wall of the moving groove 55. A straight groove connected to the vertical groove 53 is provided on the side of the sliding sleeve 51, and a convex plate 59 is slidably connected to the inner side surface of the straight groove. The convex plate 59 is fixedly connected to the push plate 54.

[0047] In this embodiment, the shape and specification of the limiting sawtooth 57 are compatible with the sawtooth groove 52 , and the limiting sawtooth 57 can be embedded in the sawtooth groove 52 , so that the limiting sawtooth 57 can cooperate with the sawtooth groove 52 to limit the movement of the sliding sleeve 51 .

[0048] During operation, according to the actual situation of the workpiece on which the bushing is to be installed, a suitable number of the containing cylinders 34 is selected, and the push plate 54 is pushed by the convex plate 59 to slide along the inner wall of the vertical groove 53, and drive the pressing plate 56 and the limiting sawtooth 57 to slide along the inner wall of the moving groove 55, so that the limiting sawtooth 57 moves into the moving groove 55 and compresses the extrusion spring 58. Then, the operator inserts the sliding sleeve 51 into the cross groove 5 and pushes it, so that the sliding sleeve 51 slides along the inner wall of the cross groove 5 until the containing cylinder 34 reaches the specified position. After the containing cylinder 34 reaches the specified position, the operator releases the convex plate 59. At this time, under the action of the rebound force of the extrusion spring 58, the pressing plate 56 moves in the opposite direction to reset and drives the limiting sawtooth 57 to be inserted into the sawtooth groove 52, so that the movement of the sliding sleeve 51 can be limited, so that the stability of the containing cylinder 34 during use is better.

[0049] In addition, by providing two rows of containing tubes 34, in actual application, when the distance between two adjacent containing tubes 34 in the same row cannot meet the need for placing bushings in multiple holes on the same straight line, the use flexibility is better. Example

[0050] See also Figure 8 A short groove 6 is provided on the inner wall of the vertical groove 53, a connecting spring 61 is fixedly connected to the inner wall of the short groove 6, a clamping block 62 is fixedly connected to the end of the connecting spring 61, a push block 63 is fixedly connected to the surface of the clamping block 62, and an adapting groove adapted to the push block 63 is provided on the side of the sliding sleeve 51.

[0051] In this embodiment, the position of the block 62 is matched with the push plate 54 , and when the bottom surface of the pressing plate 56 abuts against the bottom surface of the moving groove 55 , the push block 63 can be slidably connected with the top of the push plate 54 .

[0052] During normal operation, under the extrusion of the extrusion spring 58, when the pressure plate 56 abuts against the bottom surface of the movable groove 55, under the extrusion of the connecting spring 61, the push block 63 can move to contact the top of the pressure plate 56 and limit its upward movement, so that the limiting serration 57 cannot be separated from the serration groove 52, thereby making the sliding sleeve 51 and the containing cylinder 34 more stable during normal operation. Example

[0053] See also Figure 2A hydraulic cylinder 7 is fixedly installed on the outside of the supporting leg 32, an adjusting groove is provided on the inner side of the supporting leg 32, an extension leg 71 is slidably connected to the inner side of the adjusting groove, the top of the extension leg 71 is fixedly connected to the cross plate 33, a guide groove connected to the adjusting groove is provided on the surface of the supporting leg 32, a connecting block 72 is fixedly connected to the surface of the extension leg 71, and the connecting block 72 is slidably connected to the inner side of the guide groove.

[0054] In this embodiment, the telescopic end of the hydraulic cylinder 7 is fixedly connected to the connecting block 72, and a bending groove 73 is provided on the surface of the extending leg 71 on one side of the through end of the cross groove 5. The position and size specifications of the bending groove 73 are compatible with the containing tube 34.

[0055] During actual use, the extension end of the hydraulic cylinder 7 can be extended and retracted to drive the extension leg 71 to slide along the inner wall of the adjusting groove. The movement of the extension leg 71 drives the horizontal plate 33 to move in the vertical direction. The movement of the horizontal plate 33 drives the containing tube 34 to move, so that the distance between the bottom of the containing tube 34 and the workpiece can be adjusted as needed, thereby effectively ensuring that the bushing can fall into the hole on the workpiece more smoothly during the falling process.

[0056] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A bushing automatic installation device, comprising a work frame (1), wherein an X-axis guide frame (101) is arranged on the work frame (1), a Y-axis guide frame (102) is arranged on the X-axis guide frame (101), and an installation unit (2) is arranged on the Y-axis guide frame (102), characterized in that: The mounting unit (2) comprises a mounting plate (21) slidably connected to the Y-axis guide frame (102), a mounting cylinder (22) being mounted on the mounting plate (21), a guide rod (23) being fixedly mounted at the bottom of the telescopic end of the mounting cylinder (22), a mounting column (24) being mounted at the bottom of the guide rod (23), the mounting column (24) comprising a pressure plate arranged at the top, a positioning column being arranged on the bottom surface of the pressure plate, a guide plate (25) being mounted on the side surface of the mounting plate (21), and the guide rod (23) being slidably connected to the inner side surface of the guide plate (25); A conveying platform (3) is arranged outside the working frame (1), and a plurality of conveying rollers (31) are arranged on the conveying platform (3) at equal intervals along the length direction thereof, and the conveying rollers (31) are driven by a motor. Two groups of supporting legs (32) are arranged at intervals on both sides of the conveying platform (3) along the conveying direction of the conveying rollers (31), and a transverse plate (33) is arranged between the supporting legs (32) of the same group on both sides. A plurality of containing cylinders (34) are arranged on the transverse plate (33) at equal intervals along the length direction thereof, and a plurality of bushings are placed in the containing cylinders (34). A control unit (4) is arranged outside the containing cylinders (34), and the control unit (4) is used to control the bushings in the containing cylinders (34) to fall down in sequence. The control unit (4) comprises an installation box (41) fixedly mounted on the bottom side of the containing cylinder (34), the installation box (41) is provided with sliding grooves (42) at the upper and lower ends thereof, the inner sides of the two sliding grooves (42) are respectively slidably connected with an upper partition (43) and a lower partition (44), the surfaces of the upper partition (43) and the lower partition (44) facing each other are provided with tooth grooves (45), the installation box (41) is provided with a gear cavity, the inner side of the gear cavity is rotatably connected with a gear (46), and the top of the installation box (41) is provided with a The top of the upper partition (43) is fixedly connected with an extension plate, the outside of the installation box (41) is installed with a control cylinder (47), the side of the containing cylinder (34) is provided with a through groove (48) corresponding to the upper partition (43) and the lower partition (44), the upper and lower groups of tooth grooves (45) are respectively meshed with the upper and lower ends of the gear (46), the extension plate is slidably connected to the inner side of the long groove, the telescopic end of the control cylinder (47) is fixedly connected to the extension plate, and the two sliding grooves (42) are connected to the inside of the containing cylinder (34) through the through groove (48); The interior of the horizontal plate (33) is provided with a cross groove (5) penetrating one end thereof; the exterior of the containing tube (34) is fixedly connected with a sliding sleeve (51); the sliding sleeve (51) is slidably connected to the inner side surface of the cross groove (5); the inner wall of the cross groove (5) has a plurality of sawtooth grooves (52) equidistantly provided at both ends thereof along its length direction; the inner side surface of the sliding sleeve (51) is provided with a vertical groove (53); the inner side surface of the vertical groove (53) is slidably connected with a push plate (54); the bottom of the vertical groove (53) is provided with a push plate (54) A movable groove (55) is provided, the inner side surface of the movable groove (55) is slidably connected to a pressure plate (56), two sides of the bottom of the pressure plate (56) are symmetrically provided with limit saw teeth (57), a pressing spring (58) is fixedly connected between the top of the pressure plate (56) and the inner wall of the movable groove (55), a straight groove connected to the vertical groove (53) is provided on the side surface of the sliding sleeve (51), a convex plate (59) is slidably connected to the inner side surface of the straight groove, and the convex plate (59) is fixedly connected to the push plate (54); The inner wall of the vertical groove (53) is provided with a short groove (6), the inner wall of the short groove (6) is fixedly connected to a connecting spring (61), the end of the connecting spring (61) is fixedly connected to a clamping block (62), the surface of the clamping block (62) is fixedly connected to a push block (63), and the side surface of the sliding sleeve (51) is provided with an adapting groove adapted to the push block (63).

2. The automatic bushing installation device according to claim 1, characterized in that: The bushing comprises an extended flange and an embedded sleeve, the distance between the top of the upper partition (43) and the top of the lower partition (44) matches the height of the bushing, the positions and specifications of the upper partition (43) and the lower partition (44) correspond to those of the bushing, and the diameter of the positioning column is smaller than the inner diameter of the bushing.

3. The automatic bushing installation device according to claim 2, characterized in that: The shape and specifications of the limiting saw teeth (57) are compatible with the saw tooth groove (52), and the limiting saw teeth (57) can be embedded in the saw tooth groove (52).

4. The automatic bushing installation device according to claim 3 is characterized in that: The position of the clamping block (62) is matched with the push plate (54), and when the bottom surface of the pressing plate (56) abuts against the bottom surface of the moving groove (55), the push block (63) can be slidably connected with the top of the push plate (54).

5. The automatic bushing installation device according to claim 4, characterized in that: A hydraulic cylinder (7) is fixedly mounted on the outside of the support leg (32); an adjustment groove is provided on the inner side surface of the support leg (32); an extension leg (71) is slidably connected to the inner side surface of the adjustment groove; the top of the extension leg (71) is fixedly connected to the cross plate (33); a guide groove connected to the adjustment groove is provided on the surface of the support leg (32); a connecting block (72) is fixedly connected to the surface of the extension leg (71); and the connecting block (72) is slidably connected to the inner side surface of the guide groove.

6. The automatic bushing installation device according to claim 5, characterized in that: The telescopic end of the hydraulic cylinder (7) is fixedly connected to the connecting block (72), and a bending groove (73) is provided on the surface of the extension leg (71) at one side of the through end of the cross groove (5), and the position and size of the bending groove (73) are compatible with the containing tube (34).

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