Bushing press-fitting device

Abstract

A bush press-fitting device effectively solves the problems that working efficiency is low and mounting quality is affected and comprises a rack, a rotating shaft in the vertical direction is rotationally connected to the rack, a first screw and a second screw are coaxially fixed to the rotating shaft, and the first screw and the second screw are vertically symmetrical about the center position of the rotating shaft. The first screw and the second screw are opposite in thread turning direction, the first screw is in threaded connection with a first supporting frame, a plurality of sleeve shafts are evenly fixed to the first supporting frame, the sleeve shafts are located below the first supporting frame, the sleeve shafts are connected with press-fitting rings in an up-down sliding mode, springs are installed between the press-fitting rings and the first supporting frame, and the second screw is in threaded connection with a second supporting frame. A mounting base vertically corresponding to the sleeve shaft is fixed to the upper surface of the second supporting frame, a guide rail in the vertical direction is fixed to the rack, and the first supporting frame and the second supporting frame vertically slide along the guide rail.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining, and particularly relates to a bushing press-fitting device. Background Art

[0002] In industrial production, it is sometimes necessary to press-fit the bushing into the press-fitting hole of the press-fitting ear of the workpiece, for example, the bushing needs to be press-fitted into the ear hole of the cylinder during the assembly process. The existing bushing press-fitting device usually manually places the workpiece on the workbench, then places the bushing in a position aligned with the installation hole, starts the hydraulic press, and the press presses the bushing. This press-fitting method not only has low work efficiency, but also easily damages the bushing, affecting the installation accuracy. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a bushing press-fitting device, which effectively solves the problem of low working efficiency and affecting installation quality.

[0004] The technical solution to solve the technical problem is: it includes a frame, the frame is rotatably connected to a vertical rotating shaft, the rotating shaft is coaxially fixed with a first screw and a second screw, the first screw and the second screw are symmetrical about the center position of the rotating shaft, the thread rotation directions of the first screw and the second screw are opposite, the first screw is threadedly connected to a first support frame, a plurality of sleeve shafts are evenly fixed on the first support frame, the sleeve shaft is located below the first support frame, a press-fit ring is connected to the sleeve shaft for upward and downward sliding, a spring is installed between the press-fit ring and the first support frame, the second screw is threadedly connected to the second support frame, a mounting seat corresponding to the sleeve shaft above and below is fixed on the upper surface of the second support frame, a vertical guide rail is fixed on the frame, and the first support frame and the second support frame slide up and down along the guide rail.

[0005] Preferably, a motor is mounted on the frame, and the motor is coaxially fixedly connected to the rotating shaft via a reducer.

[0006] Preferably, the lower end of the sleeve shaft is provided with a chamfer.

[0007] Preferably, the cross section of the guide rail is polygonal.

[0008] Compared with traditional equipment, the utility model has the following advantages: 1) Good linkage, the thread rotation directions of the first screw and the second screw are opposite, and the first support frame and the second support frame can be synchronously moved closer or farther away through a motor, which greatly shortens the bushing press-fitting time, has a clever structure, low cost, high work efficiency, and the threaded connection is self-locking, safe and stable; 2) Multiple sleeve shafts are evenly fixed on the first support frame, and the sleeve shafts cooperate with the mounting seat to enable multiple bushings to be press-fitted at the same time, thereby realizing mass production and improving production capacity; 3) A spring is installed between the press-fitting ring and the first support frame, so that the press-fitting ring has a buffering effect, avoids the bushing from being damaged by press-fitting, and improves the press-fitting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the front view of the utility model;

[0010] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.

[0011] Figure numerals: 1, frame; 2, rotating shaft; 3, first screw; 4, second screw; 5, first support frame; 6, sleeve shaft; 7, press-fit ring; 8, spring; 9, second support frame; 10, mounting seat; 11, guide rail; 12, motor. DETAILED DESCRIPTION

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0013] Depend on Figure 1 to Figure 2 A bushing pressing device is provided, comprising a frame 1, on which a vertical rotating shaft 2 is rotatably connected, and a first screw 3 and a second screw 4 are coaxially fixed to the rotating shaft 2, and the first screw 3 and the second screw 4 are symmetrical about the center position of the rotating shaft 2, and the thread rotation directions of the first screw 3 and the second screw 4 are opposite, and the first screw 3 is threadedly connected to a first support frame 5, and a plurality of sleeve shafts 6 are evenly fixed on the first support frame 5, and the sleeve shaft 6 is located below the first support frame 5, and a pressing ring 7 is connected to the sleeve shaft 6 for upward and downward sliding, and a spring 8 is installed between the pressing ring 7 and the first support frame 5, and the second screw 4 is threadedly connected to a second support frame 9, and a mounting seat 10 corresponding to the sleeve shaft 6 above and below is fixed on the upper surface of the second support frame 9, and a vertical guide rail 11 is fixed on the frame 1, and the first support frame 5 and the second support frame 9 slide up and down along the guide rail 11.

[0014] In order to ensure a suitable rotation speed of the rotating shaft 2, a motor 12 is installed on the frame 1, and the motor 12 is coaxially fixedly connected to the rotating shaft 2 via a reducer.

[0015] In order to facilitate the insertion of the sleeve shaft 6 into the mounting hole of the bushing, the lower end of the sleeve shaft 6 is provided with a chamfer.

[0016] In order to ensure the stability of the first support frame 5 and the second support frame 9 when sliding up and down, the cross section of the guide rail 11 is polygonal.

[0017] When the utility model is in use, the workpiece is placed in the mounting seat 10, and the bushing is placed in the workpiece. The second support frame 9 is provided with multiple mounting seats 10, and the bushings of multiple workpieces can be press-fitted at the same time. For batch processing, the motor 12 is started, and the motor 12 drives the rotating shaft 2 to rotate through the reducer, and the rotating shaft 2 drives the first screw 3 and the second screw 4 to rotate coaxially. The first screw 3 and the second screw 4 have opposite thread rotation directions. The first screw 3 drives the first support frame 5 to move downward along the guide rail 11, and the first support frame 5 drives the sleeve shaft 6 and the press-fitting ring 7 to move downward as a whole. At the same time, the second screw 4 drives the second support frame 9 to move upward along the guide rail 11, and the second support frame 9 drives the mounting seat 10, the workpiece and the bushing to move upward as a whole. The first support frame 5 and the second support The support frame 9 is simultaneously brought together, the sleeve shaft 6 is inserted into the mounting hole of the bushing, and the press-fitting ring 7 presses the bushing downward to press the bushing into the interior of the workpiece, which is efficient and stable. A spring 8 is installed between the press-fitting ring 7 and the first support frame 5. The spring 8 has a certain buffering effect, which is used to buffer the hard extrusion force between the press-fitting ring 7 and the bushing, and plays a certain protective role on the bushing. Multiple bushings are press-fitted at the same time, with high working efficiency, safety and reliability, and guaranteed quality. After the press-fitting is completed, the motor 12 is reversed, and the motor 12 drives the rotating shaft 2 to reverse, the first screw 3 and the second screw 4 are reversed, and the first support frame 5 and the second support frame 9 are synchronously moved away. The workpiece that has been pressed is taken out, and then the workpiece to be processed and the bushing are placed in the mounting seat 10, and the cycle is carried out in sequence to realize batch processing and production.

[0018] This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A bushing press-fitting device, characterized in that: The invention comprises a frame (1), wherein a rotating shaft (2) in a vertical direction is rotatably connected to the frame (1), a first screw rod (3) and a second screw rod (4) are coaxially fixed to the rotating shaft (2), the first screw rod (3) and the second screw rod (4) are symmetrical about the central position of the rotating shaft (2), the first screw rod (3) and the second screw rod (4) have opposite screw directions, the first screw rod (3) is threadedly connected to a first support frame (5), a plurality of sleeve shafts (6) are evenly fixed to the first support frame (5), the sleeve shafts (6) are located below the first support frame (5), a press ring (7) is slidably connected to the sleeve shaft (6) in an upward and downward manner, a spring (8) is installed between the press ring (7) and the first support frame (5), the second screw rod (4) is threadedly connected to a second support frame (9), a mounting seat (10) corresponding to the sleeve shaft (6) in an upward and downward manner is fixed to the upper surface of the second support frame (9), a guide rail (11) in a vertical direction is fixed to the frame (1), and the first support frame (5) and the second support frame (9) slide up and down along the guide rail (11).

2. A bushing press-fitting device according to claim 1, characterized in that: A motor (12) is mounted on the frame (1), and the motor (12) is coaxially fixedly connected to the rotating shaft (2) via a reducer.

3. A bushing press-fitting device according to claim 1, characterized in that: The lower end of the sleeve shaft (6) is provided with a chamfer.

4. A bushing press-fitting device according to claim 1, characterized in that: The cross section of the guide rail (11) is polygonal.

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