Auxiliary positioning device for a press

Abstract

This utility model belongs to the field of press technology, specifically disclosing an auxiliary positioning device for a press. It includes a frame, on which an electro-hydraulic push rod is fixedly mounted. The output end of the electro-hydraulic push rod is fixedly connected to a slide block, and a matching pressure head is provided at the bottom of the slide block. A processing table is fixedly mounted on the frame, and a trapezoidal groove is formed on the top of the processing table. This auxiliary positioning device for a press, through a waste collection mechanism, allows two sets of matching scraper plates to move closer along the surface of the trapezoidal groove, effectively removing residual burrs, flash, and other debris from the groove through close scraping. Simultaneously, the brush head on the cylindrical brush handle forms a relative motion with the rotating lead screw, using flexible bristles to penetrate deep into the thread groove and sweep away stuck fine debris. The two cleaning devices work together to uniformly guide the debris into a waste collection box, ensuring both the positioning accuracy of the trapezoidal groove and the stability of the lead screw transmission, while also simplifying subsequent maintenance procedures through centralized collection.

Description

Technical Field

[0001] This application relates to the field of press technology, specifically to an auxiliary positioning device for a press. Background Technology

[0002] A press (including punch presses and hydraulic presses) is a sophisticated and versatile type of press. It is characterized by its wide range of applications and high production efficiency. Presses can be widely used in processes such as cutting, punching, blanking, bending, riveting, and forming. They process metal parts by applying strong pressure to metal blanks, causing plastic deformation and fracture.

[0003] Currently, during the extrusion process of a press, the workpiece must first be positioned to ensure its stability and prevent it from shifting or shaking during processing. However, some specially shaped workpieces (such as cylindrical tubes) are prone to shaking during clamping. In addition, due to the plastic flow of the workpiece under stress, some materials may produce burrs, flash, and other debris due to uneven flow or wear. Therefore, some debris may remain on the processing table after processing, which may affect the positioning of subsequent workpieces. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the shortcomings of the prior art and to propose an auxiliary positioning device for a press to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides an auxiliary positioning device for a press, including a frame, a guide rod fixedly connected to the frame, an electro-hydraulic push rod fixedly mounted on the frame, a slide block fixedly connected to the output end of the electro-hydraulic push rod, and the inner surface of the slide block slidingly connected to the outer surface of the guide rod. A pressure head is provided at the bottom of the slide block. A processing table is fixedly mounted on the frame, a trapezoidal groove is provided on the top of the processing table, a clamping and positioning mechanism for stabilizing the workpiece is provided on the processing table, and a waste collection mechanism is provided inside the processing table.

[0006] Preferably, the clamping and positioning mechanism includes a fixed frame fixedly connected to the top of the processing table, and the number of fixed frames is set in two sets. The inner side of each set of fixed frames is provided with a strip groove, and an extrusion block is slidably connected in the strip groove. The clamping and positioning mechanism can stably place workpieces with special shapes (such as round tubes) in the trapezoidal groove on the top of the processing table, which is convenient for subsequent press press to press them.

[0007] Preferably, the top of the fixing frame is threadedly connected to a screw, the bottom of the screw is rotatably connected to the top of the extrusion block, and the top of the screw is provided with a handle.

[0008] Preferably, the waste collection mechanism includes a motor fixedly installed at one end of the processing table, and a lead screw is fixedly connected to the output end of the motor. The waste collection mechanism can clean and collect the waste residue on the surface of the processing table.

[0009] Preferably, the outer surface of the lead screw is threadedly connected to an adapter scraper plate, the outer surface of the adapter scraper plate is slidably connected to the inner wall of the trapezoidal groove, and cylindrical brush handles are fixedly connected to both sides of the adapter scraper plate. A brush head is provided at the end of each set of cylindrical brush handles away from the adapter scraper plate.

[0010] Preferably, a waste collection box is movably inserted into the processing table, and an ear hook is fixedly connected to the end of the waste collection box away from the motor.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The auxiliary positioning device of this press, through the waste collection mechanism, allows two sets of matching scraper plates to move close to each other along the surface of the trapezoidal groove. By scraping, the scraper effectively removes residual burrs, flash, and other debris from the groove. At the same time, the brush head on the cylindrical brush handle moves relative to the rotating lead screw, using the flexible bristles to penetrate deep into the thread groove and sweep away stuck small debris. The two cleaning devices work together to guide the debris into the waste collection box, which not only ensures the positioning accuracy of the trapezoidal groove and the stability of the lead screw transmission, but also simplifies the subsequent maintenance process through centralized collection.

[0013] 2. The auxiliary positioning device of this press forms four non-collinear contacts through the synergistic action of the inverted V-shaped extrusion block and the trapezoidal groove. The downward movement of the inverted V-shaped extrusion block creates two inclined contact points with the outer wall of the round tube, providing lateral clamping force. The trapezoidal groove provides two-point support for the round tube workpiece from the bottom, jointly restricting the axial movement and rotation of the round tube. That is, the multi-point constraint completely eliminates the shaking during processing, which is especially suitable for thin-walled or easily deformable round tubes and avoids processing errors caused by vibration. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the surface structure of the processing table in this application;

[0016] Figure 3 This is a schematic diagram of the surface structure of the mounting bracket in this application;

[0017] Figure 4 This is a schematic diagram of the cross-sectional structure of the processing table in this application;

[0018] Figure 5 For this application Figure 4 Enlarged view of point a in the middle.

[0019] The components include: 1. Device frame; 2. Guide rod; 3. Electro-hydraulic push rod; 4. Slide seat; 5. Adaptive pressure head; 6. Processing table; 7. Trapezoidal groove; 8. Fixing frame; 9. Strip groove; 10. Extrusion block; 11. Screw; 12. Handle; 13. Motor; 14. Lead screw; 15. Adaptive scraper; 16. Cylindrical brush handle; 17. Brush head; 18. Waste collection box; 19. Ear hook. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] Please see Figure 1-5 An auxiliary positioning device for a press includes a frame 1, a guide rod 2 fixedly connected to the frame 1, an electro-hydraulic push rod 3 fixedly mounted on the frame 1, a slide 4 fixedly connected to the output end of the electro-hydraulic push rod 3, and the inner surface of the slide 4 slidingly connected to the outer surface of the guide rod 2. A matching pressure head 5 is provided at the bottom of the slide 4, and the bottom shape of the matching pressure head 5 is similar to that of a trapezoidal groove 7. Both are used to stabilize the cylindrical workpiece. A processing table 6 is fixedly mounted on the frame 1, and a trapezoidal groove 7 is provided on the top of the processing table 6. A clamping and positioning mechanism for stabilizing the workpiece is provided on the processing table 6, and a waste collection mechanism is provided inside the processing table 6.

[0022] Through the above technical solution, when the press applies pressure to workpieces with special shapes (such as round tubes), the round tube workpiece needs to be placed on the trapezoidal groove 7 on the top of the processing table 6 first. Through the clamping and positioning mechanism, the extrusion block 10 can be used to firmly hold the round tube workpiece in the trapezoidal groove 7, so that the workpiece remains stable. Finally, the electric hydraulic push rod 3 drives the extrusion block 10 to press down and complete the pressure operation on the workpiece.

[0023] Specifically, the clamping and positioning mechanism includes a fixed frame 8 fixedly connected to the top of the processing table 6, and there are two sets of fixed frames 8. The inner side of each set of fixed frames 8 is provided with a strip groove 9, and an extrusion block 10 is slidably connected in the strip groove 9.

[0024] Through the above technical solution, the strip groove 9 plays a role in relatively limiting the extrusion block 10, allowing the extrusion block 10 to move longitudinally along a fixed trajectory. The bottom of the extrusion block 10 (i.e., the position where it moves down to clamp the cylindrical workpiece) is designed with an inverted V shape. The inverted V-shaped structure has a higher tolerance for the diameter deviation of the cylindrical tube. Even if there is a slight error in the diameter of the workpiece, when the extrusion block 10 moves down, the inclined surface will automatically adjust the contact position through elastic deformation or position compensation to ensure that it is always in close contact with the outer wall of the cylindrical tube, and avoid the clamping loosening caused by dimensional deviation.

[0025] Specifically, the top of the fixing frame 8 is threadedly connected to a screw 11, the bottom of the screw 11 is rotatably connected to the top of the extrusion block 10, and a handle 12 is provided on the top of the screw 11.

[0026] Through the above technical solution, the screw 11 can be driven to rotate synchronously during the rotation of the handle 12. During this period, the screw 11 will pass through the top of the fixed frame 8 and gradually move down, thereby causing the compression block 10 to move down as well.

[0027] Specifically, the waste collection mechanism includes a motor 13 fixedly installed at one end of the processing table 6, and a lead screw 14 is fixedly connected to the output end of the motor 13.

[0028] Through the above technical solution, the lead screw 14 is provided with threads of the same length and opposite direction from the middle to both ends. This is so that when the lead screw 14 rotates, the two sets of matching scraper plates 15 move axially and synchronously in opposite directions along the lead screw 14.

[0029] Specifically, the outer surface of the lead screw 14 is threaded with an adapter scraper 15, the outer surface of the adapter scraper 15 is slidably connected to the inner wall of the trapezoidal groove 7, and cylindrical brush handles 16 are fixedly connected to both sides of the adapter scraper 15. Each of the two sets of cylindrical brush handles 16 is provided with a brush head 17 at the end away from the adapter scraper 15.

[0030] The design of sliding connection between the outer surface of the adapter scraper 15 and the inner wall of the trapezoidal groove 7 through the above technical solution is to play a relative limiting role for the adapter scraper 15, so that the adapter scraper 15 can only move along a fixed direction and a stable trajectory, and the lead screw 14 passes through the cylindrical brush handle 16.

[0031] Specifically, a waste collection box 18 is movably inserted into the processing table 6, and an ear hook 19 is fixedly connected to the end of the waste collection box 18 away from the motor 13.

[0032] With the above technical solution, when a certain amount of waste and other impurities are collected in the waste collection box 18, the waste collection box 18 can be pulled out from the processing table 6 by holding the ear hook 19, the impurities in the waste collection box 18 can be cleaned and then reinstalled.

[0033] Working principle: When pressurizing workpieces with special shapes (such as round tubes), the round tube workpiece is first placed on the trapezoidal groove 7 on the top of the processing table 6. Then, the two sets of handles 12 are rotated to drive the corresponding screws 11 to rotate. During the rotation, the screws 11 pass through the fixed frame 8 and gradually move downwards. During this process, due to the relative limiting effect of the strip groove 9, the extrusion block 10 does not rotate with the screw 11, but only moves downwards synchronously with the screw 11 until the extrusion block 10 firmly clamps the round tube workpiece against the trapezoidal groove 7. The extrusion block 10 with an inverted V-shaped bottom is at the bottom. When the tube moves, it forms two inclined contact points with the outer wall of the cylindrical tube. Combined with the trapezoidal groove 7 supporting the cylindrical workpiece, a four-point positioning system is formed. This design utilizes the geometric characteristics of the cylindrical tube, completely constraining its spatial position (preventing translation and rotation) through four non-collinear contact points. It is especially suitable for the tendency of cylindrical workpieces to roll. At the same time, the two sets of extrusion blocks 10 firmly clamp the cylindrical workpiece at different positions, which facilitates subsequent extrusion operations on the area between the workpiece clamping parts. That is, at this time, it is only necessary to push the slide 4 down by the electro-hydraulic push rod 3. Under the guiding action of the guide rod 2, the slide 4 will... The workpiece is pushed down along the guide rod 2, and then moves down synchronously with the matching pressure head 5 until the matching pressure head 5 contacts the cylindrical workpiece and performs a corresponding degree of compression. Considering that the workpiece is prone to plastic flow under stress, some materials may produce burrs, flash, and other debris due to uneven flow or wear. Therefore, after the pressure is applied, the corresponding workpiece is removed from the trapezoidal groove 7. Then, the motor 13 is turned on to drive the lead screw 14 to rotate. During this process, the two sets of matching scraper plates 15 will gradually move relative to each other along the trapezoidal groove 7. During this process, the matching scraper plates 15 can move along the trapezoidal groove 7. The debris remaining on the surface is scraped and cleaned, and the scraped debris will fall into the waste collection box 18 below. Since a small amount of waste may fall onto the surface of the lead screw 14, a cylindrical brush handle 16 and a brush head 17 are designed. Since the lead screw 14 passes through the cylindrical brush handle 16, there is a relative rotation between the lead screw 14 and the brush head 17 during the rotation of the lead screw 14. As a result, the brush head 17 can sweep out the waste residue remaining on the surface of the lead screw 14 (mainly inside the thread groove) and collect it into the waste collection box 18. After the waste collection box 18 is full, it is cleaned up.

[0034] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary positioning device for a press, comprising a device frame (1), characterized in that: A guide rod (2) is fixedly connected to the device frame (1). An electric hydraulic push rod (3) is fixedly installed on the device frame (1). A slide (4) is fixedly connected to the output end of the electric hydraulic push rod (3). The inner surface of the slide (4) is slidably connected to the outer surface of the guide rod (2). An adapter pressure head (5) is provided at the bottom of the slide (4). A processing table (6) is fixedly installed on the device frame (1). A trapezoidal groove (7) is opened on the top of the processing table (6). A clamping and positioning mechanism for stabilizing the workpiece is provided on the processing table (6). A waste collection mechanism is provided inside the processing table (6).

2. The auxiliary positioning device for a press according to claim 1, characterized in that: The clamping and positioning mechanism includes a fixed frame (8) fixedly connected to the top of the processing table (6), and there are two sets of fixed frames (8). The inner side of each set of fixed frames (8) is provided with a strip groove (9), and an extrusion block (10) is slidably connected in the strip groove (9).

3. The auxiliary positioning device for a press according to claim 2, characterized in that: The top of the fixing frame (8) is threaded with a screw (11), the bottom of the screw (11) is rotatably connected to the top of the extrusion block (10), and a handle (12) is provided on the top of the screw (11).

4. The auxiliary positioning device for a press according to claim 1, characterized in that: The waste collection mechanism includes a motor (13) fixedly installed at one end of the processing table (6), and a lead screw (14) is fixedly connected to the output end of the motor (13).

5. The auxiliary positioning device for a press according to claim 4, characterized in that: The outer surface of the lead screw (14) is threaded with a matching scraper plate (15). The outer surface of the matching scraper plate (15) is slidably connected to the inner wall of the trapezoidal groove (7). Both sides of the matching scraper plate (15) are fixedly connected with cylindrical brush handles (16). Each of the two sets of cylindrical brush handles (16) is provided with a brush head (17) at the end away from the matching scraper plate (15).

6. The auxiliary positioning device for a press according to claim 4, characterized in that: A waste collection box (18) is movably inserted into the processing table (6), and an ear hook (19) is fixedly connected to the end of the waste collection box (18) away from the motor (13).

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