Semi-automatic press-in machine

Abstract

The utility model discloses a kind of semi-automatic press-in machines, including rack (1), it is characterized by: the middle part of the rack (1) is provided with fixed support plate (2), two upper guide columns (3) are symmetrically provided on the top end surface of fixed support plate (2), the top end of these two upper guide columns (3) is commonly supported with top plate (4), servo motor (5) is provided on the top plate (4), the output end of servo motor (5) is connected with screw rod (7) that rotates and supports in fixed support plate (2) and top plate (4) by belt pulley transmission pair (6), screw rod (7) is connected with nut block (8), nut block (8) is fixedly connected in the middle part of pressing plate (9), and guide sleeve (10) that is movably sleeved on guide column (3) is also provided on pressing plate (9), the bottom end surface of pressing plate (9) is connected with pressure head (11).

Description

Technical Field

[0001] This utility model relates to the field of machining, and in particular to a semi-automatic pressing machine. Background Technology

[0002] When assembling different workpieces, there are generally two methods: manual operation and equipment operation. When it is necessary to assemble, such as... Figure 1 When the workpiece 20 and the positioning pin 23 are assembled into a single structure, since there is no special equipment for pressing the two together, the assembly can only be carried out manually.

[0003] The workpiece 20 and the positioning pin 23 have certain special characteristics in their structure. First, after the positioning pin 23 is inserted into the workpiece 20, there are specific requirements for the length of the pin that is exposed outside. Second, the movement trajectory of the positioning pin 23 is interfering with some structures on the workpiece 20. This makes it relatively complicated and inefficient to operate with ordinary press-fitting equipment, and it cannot be completed in one press-fitting operation.

[0004] Therefore, a method or apparatus is needed to solve the above problems. Summary of the Invention

[0005] The present invention addresses the aforementioned shortcomings of the existing technology by proposing a semi-automatic press-fitting machine with a simple structure, ingenious design, reasonable layout, and the ability to efficiently, conveniently, and reliably perform press-fitting operations on two different components.

[0006] The technical solution of this utility model is: a semi-automatic pressing machine, including a frame 1, characterized in that: a fixed support plate 2 is provided in the middle of the frame 1, and two upper guide columns 3 are symmetrically arranged on the top surface of the fixed support plate 2. The tops of the two upper guide columns 3 jointly support a top plate 4. A servo motor 5 is provided on the top plate 4. The output end of the servo motor 5 is connected to a lead screw 7 rotatably supported on the fixed support plate 2 and the top plate 4 through a belt pulley transmission pair 6. A lead screw nut 8 is connected to the lead screw 7. The lead screw nut 8 is fixedly connected to the middle of a pressure plate 9. A guide sleeve 10 is also provided on the pressure plate 9, which is movably sleeved on the guide columns 3. A pressing head 11 is connected to the bottom surface of the pressure plate 9. The bottom of the frame 1 is provided with a pair of slide rails 12, and a sliding platform 13 is slidably connected to the slide rails 12. The sliding platform 13 is driven by a cylinder 14 provided on the frame 1, and a lower fixture is also provided on the sliding platform 13. The lower fixture includes two symmetrically distributed lower guide posts 15 fixedly mounted on the top surface of the sliding platform 13. Both lower guide posts 15 are movably connected to through holes in the isolation plate 16. Springs 17 are sleeved on the lower guide posts 15, and the springs 17 are located between the isolation plate 16 and the sliding platform 13. The lower fixture also includes a positioning bracket 18 located in the center of the sliding platform 13. The positioning bracket 18 is provided with a bracket positioning pin 19, which matches a pin hole on the bottom surface of the workpiece 20. The isolation plate 16 has a workpiece clearance hole 21 in the middle. The pressure head 11 is located directly above the workpiece clearance hole 21. The pressure head 11 is a hollow cylindrical shape, and the cross-section of its cavity matches the outline of the workpiece clearance hole 21. A pressure head clearance groove 22 is provided on the side wall of the pressure head 11. The pressure head clearance groove 22 is located directly above the positioning pin 23 on the workpiece 20 that needs to be pressed. The workpiece clearance hole 21 allows the upper part of the workpiece 20 and the positioning pin 23 to pass through.

[0007] A distance sensor 24 is provided on the side of the fixed support plate 2, and a trigger block 25 matching the distance sensor 24 is provided on the side of the pressure plate 9.

[0008] The positioning bracket 18 is provided with a workpiece clearance groove 26 that matches the movement trajectory of the positioning pin 23.

[0009] Compared with the prior art, this utility model has the following advantages: This type of semi-automatic press-fitting machine features a simple structure, ingenious design, and reasonable layout. It addresses the challenges of pressing certain structurally unique workpieces by employing a specialized structure. Through a lead screw and nut transmission pair, the motor's torque output is converted into the linear motion of the press head. When the press head presses down, a specially structured isolation plate ensures that the workpiece is repositioned, allowing only the positioning pin to be pressed down. Furthermore, a workpiece clearance groove is provided on the workpiece support bracket to allow space for the positioning pin's movement. This allows for semi-automatic pressing of complex workpieces, effectively improving work efficiency and ensuring pressing quality while saving manual labor. Moreover, its manufacturing process is simple and cost-effective. Therefore, it possesses numerous advantages and is particularly suitable for widespread application in this field, with a very broad market prospect. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the workpiece and positioning pin targeted in this embodiment of the utility model.

[0011] Figure 2 This is a front view of an embodiment of the present utility model.

[0012] Figure 3This is a three-dimensional structural schematic diagram of an embodiment of the present utility model (direction one).

[0013] Figure 4 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model (direction two).

[0014] Figure 5 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model (direction two, with the workpiece hidden). Detailed Implementation

[0015] The specific embodiments of this utility model will be described below with reference to the accompanying drawings. Figures 1 to 5 As shown: A semi-automatic pressing machine includes a frame 1 as a base. A fixed support plate 2 is provided in the middle of the frame 1. Two upper guide columns 3 are symmetrically arranged on the top surface of the fixed support plate 2. The tops of the two upper guide columns 3 jointly support a top plate 4. A servo motor 5 is provided on the top plate 4. The output end of the servo motor 5 is connected to a lead screw 7, which is rotatably supported on the fixed support plate 2 and the top plate 4, through a belt pulley transmission pair 6. A lead screw nut 8 is connected to the lead screw 7. The lead screw nut 8 is fixedly connected to the middle of a pressure plate 9. A guide sleeve 10 is also provided on the pressure plate 9, which is movably sleeved on the guide columns 3. A pressing head 11 is connected to the bottom surface of the pressure plate 9. The bottom of the frame 1 is provided with a pair of slide rails 12, and a sliding platform 13 is slidably connected to the slide rails 12. The sliding platform 13 is driven by a cylinder 14 provided on the frame 1, and a lower fixture is also provided on the sliding platform 13. The lower fixture includes two symmetrically distributed lower guide posts 15 fixedly mounted on the top surface of the sliding platform 13. Both lower guide posts 15 are movably connected to through holes in the isolation plate 16. Springs 17 are sleeved on the lower guide posts 15, and the springs 17 are located between the isolation plate 16 and the sliding platform 13. The lower fixture also includes a positioning bracket 18 located in the center of the sliding platform 13. The positioning bracket 18 is provided with a bracket positioning pin 19, which matches a pin hole on the bottom surface of the workpiece 20. The isolation plate 16 has a workpiece clearance hole 21 in the middle. The pressure head 11 is located directly above the workpiece clearance hole 21. The pressure head 11 is a hollow cylindrical shape, and the cross-section of its cavity matches the outline of the workpiece clearance hole 21. A pressure head clearance groove 22 is provided on the side wall of the pressure head 11. The pressure head clearance groove 22 is located directly above the positioning pin 23 on the workpiece 20 that needs to be pressed. The workpiece clearance hole 21 allows the upper part of the workpiece 20 and the positioning pin 23 to pass through.

[0016] A distance sensor 24 is provided on the side of the fixed support plate 2, and a trigger block 25 matching the distance sensor 24 is provided on the side of the pressure plate 9.

[0017] The positioning bracket 18 is provided with a workpiece clearance groove 26 that matches the movement trajectory of the positioning pin 23.

[0018] The working process of the semi-automatic pressing machine in this embodiment of the utility model is as follows: In the initial state, the cylinder 14 is in the extended limit position, the sliding platform 13 is located at the loading and unloading position, the operator places the workpiece 20 on the positioning bracket 18, and the multiple bracket positioning pins 19 on the positioning bracket 18 will be inserted into the multiple positioning pin holes on the bottom end face of the workpiece 20 to position the workpiece 20, while the positioning pins 23 have been pre-assembled on the workpiece 20. After the workpiece 20 is placed in place, the operator issues a command through the control system. The control system first controls the cylinder 14 to drive the sliding platform 13 to move. When the cylinder 14 is at the limit position of retraction, the sliding platform 13 is at the working position, that is, the workpiece 20 and the positioning pin 23 on it move to the bottom of the isolation plate 16 and the pressure head 11. After cylinder 14 reaches its position, the control system controls servo motor 5 to operate. Servo motor 5 drives lead screw 7 to rotate via belt pulley transmission pair 6. The lead screw nut block 8 connected to lead screw 7 then drives pressure plate 9 and pressure head 11 to move downward together. During the downward movement of the pressure head 11, its bottom edge contacts the pressure plate 9 and drives the pressure plate 9 to press down together. During the downward movement of the pressure plate 9 relative to the workpiece 20, the upper part of the workpiece 20 passes through the workpiece clearance hole 21 opened on the pressure plate 9 and enters the inner cavity of the pressure head 11 (the pressure head 11 is a hollow structure). When the pressure head 11 continues to move down until the pressure head clearance groove 22 on it contacts the positioning pin 23, it will drive the positioning pin 23 to move down relative to the workpiece 20, thereby realizing the pressing connection of the positioning pin 23 on the workpiece 23. During the pressing process, considering the movement trajectory of the positioning pin 23, a workpiece clearance groove 26 matching the positioning pin 23 is opened on the positioning bracket 18, leaving enough movement space for the positioning pin 23. Therefore, the above pressing process can be successfully realized. During the above operation, the distance between the pressure plate 9 and the fixed support plate 2 gradually decreases. When the trigger block 25 moves to a position sufficient to trigger the distance sensor 24, the distance sensor 24 sends a signal to the control system. The control system determines that the press-fitting is in place and then controls the servo motor 5 to stop working. Then the servo motor 5 rotates in the opposite direction, driving the pressure head 11 to move upward, while the isolation plate 16 will move upward under the action of the spring 17 and return to the initial height (higher than the workpiece 20). Then the cylinder 14 extends again, driving the sliding platform 13 and the workpiece 20 that has completed the pressing operation to move out from under the isolation plate 16 and return to the loading and unloading position. The operator can then remove the workpiece 20 from the positioning bracket 18.

Claims

1. A semi-automatic pressing machine, comprising a frame (1), characterized in that: A fixed support plate (2) is provided in the middle of the frame (1). Two upper guide columns (3) are symmetrically arranged on the top surface of the fixed support plate (2). The top of the two upper guide columns (3) jointly support the top plate (4). A servo motor (5) is provided on the top plate (4). The output end of the servo motor (5) is connected to the lead screw (7) which is rotatably supported on the fixed support plate (2) and the top plate (4) through a belt pulley transmission pair (6). A lead screw block (8) is connected to the lead screw (7). The lead screw block (8) is fixedly connected to the middle of the pressure plate (9). A guide sleeve (10) is also provided on the pressure plate (9) and is movably sleeved on the guide column (3). A pressure head (11) is connected to the bottom surface of the pressure plate (9). The bottom of the frame (1) is provided with a pair of slide rails (12), and a sliding platform (13) is slidably connected on the slide rails (12). The sliding platform (13) is driven by a cylinder (14) provided on the frame (1), and a lower fixture is also provided on the sliding platform (13). The lower fixture includes two symmetrically distributed lower guide posts (15) fixedly mounted on the top surface of the sliding platform (13). Both lower guide posts (15) are movably connected to through holes opened in the isolation plate (16). A spring (17) is sleeved on each lower guide post (15), and the spring (17) is located between the isolation plate (16) and the sliding platform (13). The lower fixture also includes a positioning bracket (18) set in the center of the sliding platform (13). A bracket positioning pin (19) is provided on the positioning bracket (18). The bracket positioning pin (19) matches the pin hole opened on the bottom surface of the workpiece (20). The partition plate (16) has a workpiece clearance hole (21) in the middle. The pressure head (11) is located directly above the workpiece clearance hole (21). The pressure head (11) is a hollow cylindrical shape. The cross section of its cavity matches the outline of the workpiece clearance hole (21). A pressure head clearance groove (22) is provided on the side wall of the pressure head (11). The pressure head clearance groove (22) is located directly above the positioning pin (23) that needs to be pressed on the workpiece (20). The workpiece clearance hole (21) allows the upper part of the workpiece (20) and the positioning pin (23) to pass through.

2. The semi-automatic pressing machine according to claim 1, characterized in that: A distance sensor (24) is provided on the side of the fixed support plate (2), and a trigger block (25) matching the distance sensor (24) is provided on the side of the pressure plate (9).

3. The semi-automatic pressing machine according to claim 1, characterized in that: The positioning bracket (18) is provided with a workpiece clearance groove (26) that matches the movement trajectory of the positioning pin (23).

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