A kind of welded pipe unit roller quick replacement device

Abstract

The utility model relates to quick replacement technical field discloses a kind of welded pipe unit roll quick replacement device, including module rack, the left side of module rack is equipped with clamping homing mechanism, the clamping homing mechanism is used to move homing support plate, the outside of module rack is slidably connected with push mechanism, the push mechanism is used to push out rack;The clamping homing mechanism includes fixed plate, multiple guide posts are fixedly connected in the inside of fixed plate, multiple the outer wall of guide post is slidably connected with multiple profiling chuck, the left side of profiling chuck is all fixedly connected with rack, multiple the side meshing connection of adjacent rack has toothed cylinder, the bottom of toothed cylinder is equipped with movement component.In the utility model, rotate toothed cylinder, rack is driven to pull profiling chuck and clamp support frame of module rack, and further solve the tedious problem that support plate needs to be repeatedly calibrated due to self-weight and rack hole alignment when homing.

Description

Technical Field

[0001] This utility model relates to the field of quick replacement technology, and in particular to a quick replacement device for the rolls of a welded pipe unit. Background Technology

[0002] Rolls are the core working components of rolling mills. They are mostly cylindrical and consist of a roll body, roll neck, and roll head. A quick roll replacement device for welded pipe mills is an auxiliary equipment for roll replacement adapted to welded pipe production. It consists of guide rails, a hydraulic drive system, positioning fixtures, and a locking mechanism. It is mostly made of high-strength alloy materials. The roll to be replaced can be moved horizontally along the guide rail to the mill station by hydraulic drive, and then precisely aligned by the positioning fixtures and fixed by the locking mechanism.

[0003] In traditional technology, the rolls are connected inside the frame. When changing the production specifications of continuous materials, the machine needs to be stopped for maintenance. The conventional replacement operation is basically to manually disassemble the rolls and replace them with new ones. For heavy equipment, cranes and other equipment are needed, which brings great inconvenience to the roll replacement and slows down the production efficiency. Existing technology solves the traditional roll replacement problem through modular integration and automation. The rolls, bearing housings, etc. are pre-assembled into independent roll box modules and debugged offline. When changing rolls, the old module is moved out as a whole after unlocking with the help of the device's own guide rails and hydraulic power system, without manual disassembly and transportation. Some devices are equipped with lifting assistance structures to avoid relying on external cranes, greatly simplifying operation, shortening downtime, and improving production efficiency. However, in practical applications, when returning to the machine, the support plate and the mounting holes of the frame must be precisely aligned. The support plate itself has a certain weight, and the process of repeatedly calibrating the position is very troublesome. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides a quick roll replacement device for welded pipe units, which aims to improve the problems in the prior art where the support plate and the mounting holes of the frame are aligned during the return process, the support plate itself has weight, the adjustment process involves repeated calibration, and the operation process is cumbersome.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quick roll replacement device for a welded pipe unit, comprising a modular frame, a clamping and positioning mechanism installed on the left side of the modular frame, the clamping and positioning mechanism being used to move a positioning support plate, a pushing mechanism being slidably connected to the outer side of the modular frame, the pushing mechanism being used to push out the frame; the clamping and positioning mechanism includes a fixed plate, the fixed plate being installed on the left side of the modular frame, a plurality of guide columns being fixedly connected at equal intervals inside the fixed plate, a plurality of contoured chucks being slidably connected to the outer walls of the plurality of guide columns, a rack being fixedly connected to the left side of each contoured chuck, a toothed cylinder being meshed on the adjacent side of the plurality of racks, and a motion component being installed at the bottom of the toothed cylinder.

[0006] As a further description of the above technical solution:

[0007] The motion assembly includes a motion board, the top of which is fixedly connected to the bottom of a fixed board. Multiple rollers are fixedly connected at equal intervals near the four corners of the bottom of the motion board, and grooved tables are slidably connected to the bottom of the rollers.

[0008] As a further description of the above technical solution:

[0009] The pushing mechanism includes guide bars, which are slidably connected to the bottom of the module frame. Multiple guide bars are slidably connected to top heads on adjacent sides, and multiple top heads are slidably connected to guide bars on adjacent sides. The other end of each guide bar is fixedly connected to a limit post, and a driving component is installed on adjacent sides of multiple limit posts.

[0010] As a further description of the above technical solution:

[0011] The drive assembly includes a push rod motor, which is mounted on the right side of the module frame. A moving block is fixedly connected to the push end of the push rod motor, and a force-sharing plate is fixedly connected to the left side of the moving block.

[0012] As a further description of the above technical solution:

[0013] A rotating handle is fixedly connected to the left side of the toothed cylinder, and a grooved table is installed at the bottom of the rotating handle.

[0014] As a further description of the above technical solution:

[0015] The module frame has multiple roll bodies rotatably connected at equal intervals inside, and each roll body has a roll mold fixedly connected to its outer wall.

[0016] As a further description of the above technical solution:

[0017] The bottom of the module frame is fixedly connected to a machine base plate, and multiple machine columns are fixedly connected at equal intervals to the bottom of the machine base plate.

[0018] As a further description of the above technical solution:

[0019] The slotted table has support columns fixedly connected to the four corners of its bottom near the edge, and each support column has casters fixedly connected to its bottom.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, rotating the handle causes the toothed cylinder inside the fixed plate to move, which drives the rack to pull the contour chuck to clamp the support frame of the module frame. The moving component drives the clamping and returning mechanism to move. After the replacement is completed, it accurately returns to its original position with the help of the positioning of the slotted table, thus solving the tedious problem of the support plate needing to be repeatedly calibrated to align with the frame hole due to its own weight during the return process.

[0022] 2. In this utility model, when replacing the rollers of the welded pipe unit, the push rod motor starts to push the moving block and the force distribution plate. The force distribution plate distributes the thrust to the top head. The guide bar and the guide strip ensure that the thrust is concentrated. At the same time, the guide strip guides the module frame to slide to realize the push-out of the module frame, thereby achieving the rapid replacement of the module frame. Attached Figure Description

[0023] Figure 1 This is a front view of a quick roll changing device for a welded pipe unit proposed in this utility model;

[0024] Figure 2 This is a perspective view of a quick roll changing device for a welded pipe unit proposed in this utility model;

[0025] Figure 3 This is a partial structural diagram of a quick roll changing device for a welded pipe unit proposed in this utility model;

[0026] Figure 4 This is a partial structural cross-sectional view of a quick roll changing device for a welded pipe unit proposed in this utility model;

[0027] Figure 5 This is a structural diagram illustrating a quick roll changing device for a welded pipe unit proposed in this utility model.

[0028] Legend:

[0029] 1. Modular frame; 2. Clamping and returning mechanism; 201. Fixing plate; 202. Guide column; 203. Contouring chuck; 204. Rack; 205. Toothed cylinder; 206. Motion assembly; 2061. Motion plate; 2062. Roller; 2063. Grooved table; 3. Pushing mechanism; 301. Guide bar; 302. Top head; 303. Guide bar; 304. Limiting column; 305. Drive assembly; 3051. Push rod motor; 3052. Motion block; 3053. Force distribution plate; 4. Rotating handle; 5. Roll body; 6. Roll mold; 7. Machine base plate; 8. Machine column; 9. Support column; 10. Casters. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 3 and Figure 4 This utility model provides an embodiment of a quick roll changing device for a welded pipe unit, comprising a modular frame 1. A clamping and returning mechanism 2 is installed on the left side of the modular frame 1, which is used to move a returning support plate. A pushing mechanism 3 is slidably connected to the outside of the modular frame 1, which is used to push out the frame. The clamping and returning mechanism 2 includes a fixing plate 201, which is installed on the left side of the modular frame 1. Multiple guide posts 202 are fixedly connected at equal intervals inside the fixing plate 201. Multiple contoured chucks 203 are slidably connected to the outer walls of the multiple guide posts 202. A rack 204 is fixedly connected to the left side of each contoured chuck 203. 4. A toothed cylinder 205 is meshed with the adjacent side. A motion component 206 is installed at the bottom of the toothed cylinder 205. The motion component 206 includes a motion plate 2061. The top of the motion plate 2061 is fixedly connected to the bottom of the fixed plate 201. Multiple rollers 2062 are fixedly connected at equal intervals near the four corners of the bottom of the motion plate 2061. A grooved table 2063 is slidably connected to the bottom of the rollers 2062. A rotating handle 4 is fixedly connected to the left side of the toothed cylinder 205. A grooved table 2063 is installed at the bottom of the rotating handle 4. Support columns 9 are fixedly connected to the four corners of the bottom of the grooved table 2063 near the edge. Universal wheels 10 are fixedly connected to the bottom of each support column 9.

[0032] Specifically, rotating the handle 4 causes the toothed cylinder 205 inside the fixed plate 201 to move. The toothed cylinder 205 then drives the meshing rack 204 to move synchronously. The rack 204 further drives the contour chuck 203 to clamp the support frame inside the module frame 1. When the bolt on one side of the roll is disengaged and the contour chuck 203 firmly clamps the support frame along the guide post 202, the roller 2062 will drive the moving plate 2061 to slide within the grooved table 2063, causing the support frame on one side of the module frame 1 to move away from the rolling mill. Roll replacement frees up operating space. After replacement, roller 2062 drives clamping and returning mechanism 2 to reset. Due to the precise guiding effect of grooved table 2063, the support frame can return to its original position without any error. When no operation is needed, the support column 9 and caster 10 at the bottom of grooved table 2063 can easily move the entire mechanism. This design effectively solves the problem of cumbersome process caused by the support plate having to be repeatedly calibrated to align with the frame hole due to its own weight during traditional repositioning through mechanical guidance and positioning structure, and greatly improves the speed of roll replacement and mechanism reset.

[0033] Reference Figure 2 and Figure 5 The pushing mechanism 3 includes a guide bar 301, which is slidably connected to the bottom of the module frame 1. Multiple guide bars 301 are slidably connected to top heads 302 on adjacent sides. Multiple top heads 302 are slidably connected to guide bars 303 on adjacent sides. The other end of each guide bar 303 is fixedly connected to a limit post 304. Multiple limit posts 304 are installed on adjacent sides of each other. The driving assembly 305 includes a push rod motor 3051. The push rod motor 3051 is a DT type electric push rod. Its working principle is that the DT type electric push rod uses an electric motor as a power source, drives the screw nut pair through a reduction gear, and converts the rotational motion of the electric motor into linear motion. It consists of a drive motor, a reduction gear mechanism, a screw nut pair, a limit device, and a push rod housing and connecting parts. The push rod motor 3051 is installed on the right side of the module frame 1. The push end of the push rod motor 3051 is fixedly connected to a moving block 3052. The left side of the moving block 3052 is fixedly connected to a force distribution plate 3053.

[0034] Specifically, when the rolls of the welded pipe unit need to be replaced, the push rod motor 3051 is activated. The motor's driving force pushes the moving block 3052 and the force distribution plate 3053 to move synchronously. The force distribution plate 3053 decomposes and transmits the thrust from the moving block 3052 to the mandrel 302, causing the mandrel 302 to displace in the same direction. The internal movement of the moving block 3052 and the force distribution plate 3053 is constrained by the guide bar 303, while the external movement of the mandrel 302 and the force distribution plate 3053 is limited by the guide bar 301. This double-guided structure ensures that the thrust is transmitted along the set direction without being dispersed, and is consistent with the guide bar 301. The fixed limiting post 304 of the guide bar 303 can limit the maximum return distance of the component and avoid excessive movement that could damage the push rod motor 3051. At the same time, the guide bar 301 also guides the module frame 1 to slide smoothly, so as to reliably push out the module frame 1. When it is necessary to push the module frame 1 back to its original position, the push rod motor 3051 switches to reverse operation and drives the component to move in the opposite direction through the same transmission path, so that the module frame 1 can be accurately reset. This bidirectional drive design, combined with the multi-guide positioning structure, enables the rapid replacement of the module frame 1 and greatly simplifies the operation process of roll replacement.

[0035] Reference Figure 1 and Figure 2 Multiple roll bodies 5 are rotatably connected at equal intervals inside the modular frame 1. Roll molds 6 are fixedly connected to the outer walls of the roll bodies 5. A machine base plate 7 is fixedly connected to the bottom of the modular frame 1. Multiple machine columns 8 are fixedly connected at equal intervals to the bottom of the machine base plate 7.

[0036] Specifically, the machine base plate 7 and the machine column 8 work together to form a stable support structure, which firmly supports the overall modular frame 1 and provides a solid foundation for the operation of the modular frame 1, ensuring that it remains stable and does not shake during operation. The roller body 5 and roller mold 6 assembled inside the modular frame 1 form a collaborative working component. After the steel pipe is transported to the designated position, the roller body 5 provides driving force, which drives the roller mold 6 to fit against the surface of the steel pipe. Through the forming structure of the mold and the clamping force of the roller, the moving steel pipe is fixed and shaped, ensuring that the steel pipe maintains a stable posture during subsequent processing and avoiding displacement that affects processing accuracy.

[0037] Working principle: Rotating the handle 4 causes the toothed cylinder 205 inside the fixed plate 201 to move. As the toothed cylinder 205 moves, it drives the meshing rack 204 to move. As the rack 204 moves, it drives the contour chuck 203 to clamp the support frame inside the module frame 1. After the bolt on the roller side is released and the contour chuck 203 clamps the support frame along the guide post 202, the roller 2062 drives the moving plate 2061 to move in the grooved table 2063, causing the support frame on one side of the module frame 1 to move away. Because the support frame moves away, it is convenient to replace the roller. After the replacement is completed, the roller 2062 drives the clamping and returning mechanism 2 to reset. Because of the grooved table 2063, the support frame will return to its original position without any error, thus solving the problem of the cumbersome process caused by the support plate repeatedly aligning with the frame hole due to its own weight during the return.

[0038] When the rolls of the welded pipe unit need to be replaced, the push rod motor 3051 starts to push the moving block 3052 and the force distribution plate 3053. As the force distribution plate 3053 is pushed, it sends the force component that pushes the moving block 3052 to the top head 302. The internal movement of the top head 302, the moving block 3052 and the force distribution plate 3053 is guided by the guide bar 303, and the external movement of the top head 302 and the force distribution plate 3053 is guided by the guide bar 301. The guide bar 303 and the guide bar 301 guide the pushing force to not disperse. The limiting post 304 fixed to the guide bar 303 is used to protect the push rod motor 3051 and return it to its original position to prevent damage to the push rod motor 3051. The guide bar 301 also guides the module frame 1 to slide, thereby achieving the purpose of pushing out the module frame 1. When it is necessary to push in, the push rod changes to the opposite direction, thereby achieving the purpose of quickly replacing the module frame 1.

Claims

1. A quick roll changing device for a welded pipe mill, comprising a modular frame (1), characterized in that: A clamping and positioning mechanism (2) is installed on the left side of the module frame (1). The clamping and positioning mechanism (2) is used to move the positioning support plate. A pushing mechanism (3) is slidably connected to the outside of the module frame (1). The pushing mechanism (3) is used to push out the frame. The clamping and positioning mechanism (2) includes a fixed plate (201), which is installed on the left side of the module frame (1). Multiple guide posts (202) are fixedly connected at equal intervals inside the fixed plate (201). Multiple contoured chucks (203) are slidably connected to the outer walls of the multiple guide posts (202). A rack (204) is fixedly connected to the left side of each contoured chuck (203). A toothed cylinder (205) is meshed on the adjacent side of the multiple racks (204). A motion component (206) is installed at the bottom of the toothed cylinder (205).

2. The quick roll changing device for a welded pipe mill according to claim 1, characterized in that: The motion component (206) includes a motion plate (2061), the top of which is fixedly connected to the bottom of a fixed plate (201). A plurality of rollers (2062) are fixedly connected at equal intervals near the four corners of the bottom of the motion plate (2061), and a grooved table (2063) is slidably connected to the bottom of the rollers (2062).

3. The quick roll changing device for a welded pipe mill according to claim 1, characterized in that: The pushing mechanism (3) includes a guide bar (301), which is slidably connected to the bottom of the module frame (1). A top head (302) is slidably connected to one side of each of the multiple guide bars (301). A guide bar (303) is slidably connected to one side of each of the multiple top heads (302). A limit post (304) is fixedly connected to the other end of each guide bar (303). A drive assembly (305) is installed on one side of each of the multiple limit posts (304).

4. The quick roll changing device for a welded pipe mill according to claim 3, characterized in that: The drive assembly (305) includes a push rod motor (3051), which is mounted on the right side of the module frame (1). A moving block (3052) is fixedly connected to the push end of the push rod motor (3051), and a force-shaping plate (3053) is fixedly connected to the left side of the moving block (3052).

5. The quick roll changing device for a welded pipe mill according to claim 1, characterized in that: A rotating handle (4) is fixedly connected to the left side of the toothed cylinder (205), and a grooved table (2063) is installed at the bottom of the rotating handle (4).

6. The quick roll changing device for a welded pipe mill according to claim 1, characterized in that: The module frame (1) has multiple roll bodies (5) rotatably connected at equal intervals inside, and the outer walls of the roll bodies (5) are all fixedly connected with roll molds (6).

7. The quick roll changing device for a welded pipe mill according to claim 1, characterized in that: The bottom of the module frame (1) is fixedly connected to a machine base plate (7), and multiple machine columns (8) are fixedly connected at equal intervals to the bottom of the machine base plate (7).

8. A quick roll changing device for a welded pipe mill according to claim 2, characterized in that: The bottom of the slotted table (2063) is fixedly connected to the four corners near the edge with support columns (9), and the bottom of the support columns (9) is fixedly connected to casters (10).

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