A device for converting cold-drawn steel tubes before welding

Abstract

The utility model relates to cold-drawn steel pipe welding front conversion device technical field, especially a kind of cold-drawn steel pipe welding front conversion device, including workbench and the feeding mechanism, rotating mechanism and discharging mechanism of being arranged on it. Feeding mechanism and discharging mechanism are arranged side by side, rotating mechanism is located the back side of two, rotating mechanism includes the horizontal displacement component fixed by support frame, vertical displacement component is slidably connected above, vertical displacement component surface slidably connects rotating assembly, rotating assembly connects two sets of fixture components, feeding mechanism is equipped with the roller way with V type limiting slot and stop component, discharging mechanism is configured U type supporting groove receiving frame and inclined output roller way. The device solves the problem of low efficiency, poor positioning in the industry, with double tube adaptation, path optimization, precision control three large-scale advantages.

Description

Technical Field

[0001] This utility model relates to the technical field of pre-welding conversion devices for cold-drawn steel pipes, and in particular to a pre-welding conversion device for cold-drawn steel pipes. Background Technology

[0002] In the pre-welding process of cold-drawn steel pipes, the pipes, which are transported side-by-side, need to be rotated 90° before being transferred to the welding station. Traditional methods, using manual handling or single-station robots, have the following drawbacks: 1. Low efficiency: Manual operation cannot achieve synchronous transfer of the two tubes, and the rotation angle deviation is large; 2. Insufficient positioning accuracy: The steel pipe is prone to axial displacement during rotation, leading to welding misalignment; 3. Poor equipment compatibility: Existing robotic arms are difficult to adapt to the spacing adjustment requirements of different pipe diameters.

[0003] Therefore, there is an urgent need for an automated conversion device that can accurately clamp the two tubes, rotate them synchronously by 90°, and output a stable output. Utility Model Content

[0004] To overcome the shortcomings of existing methods, this utility model provides a conversion device for cold-drawn steel pipes before welding.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a cold-drawn steel pipe pre-welding conversion device, including a workbench and a feeding mechanism, a rotating mechanism and a discharging mechanism arranged on the workbench; the feeding mechanism and the discharging mechanism are arranged side by side on the workbench, and the rotating mechanism is located directly behind the feeding mechanism and the discharging mechanism; the rotating mechanism includes a support frame, a horizontal displacement component, a vertical displacement component, a rotating component and a clamping component; the horizontal displacement component is fixed on the workbench by two sets of support frames, and the vertical displacement component is slidably connected above the horizontal displacement component; the rotating component is slidably connected to the surface of the vertical displacement component, and the output end of the rotating component is symmetrically connected to two sets of clamping components.

[0006] According to another embodiment of the present invention, the horizontal displacement component includes a horizontal guide rail and a horizontal drive screw, the two ends of the horizontal guide rail are fixed to two sets of support frames, and the vertical displacement component is slidably connected to the horizontal guide rail via a slider.

[0007] According to another embodiment of the present invention, the vertical displacement component includes a vertical guide rail and a vertical drive screw, and the rotation component is slidably connected to the vertical guide rail via a fixed plate.

[0008] According to another embodiment of the present invention, the rotating assembly further includes a rotary drive cylinder, a rack, and gears; the output rod of the rotary drive cylinder is connected to the rack; two sets of gears mesh on the rack; and the central shaft of the gears is connected to the clamp assembly.

[0009] According to another embodiment of the present invention, the clamping assembly is a pneumatic gripper, and its clamping surface is provided with an arc-shaped groove that matches the outer diameter of the steel pipe.

[0010] According to another embodiment of the present invention, the feeding mechanism further includes: a parallel feeding roller conveyor with its axis aligned with the length direction of the worktable; a stop assembly at the end of the roller conveyor, comprising a liftable stop block and a cylinder for driving it; a steel pipe positioning sensor at the front of the stop assembly for detecting when the steel pipe reaches the picking position; and a V-shaped limiting groove on the roller surface of the feeding roller conveyor, the width of which matches the outer diameter of the steel pipe, and the distance between adjacent roller conveyors being less than 1 / 3 of the length of the steel pipe.

[0011] According to another embodiment of the present invention, the discharge mechanism further includes: a receiving frame, the height of which is lower than that of the feeding roller conveyor and a buffer pad is provided on the top surface; release cylinders that can be opened and closed horizontally are symmetrically arranged on both sides of the receiving frame; an inclined output roller conveyor is connected downstream of the receiving frame, the inclined direction of which points to the outside of the worktable; a U-shaped groove is provided on the top of the receiving frame, the opening direction of which is tangent to the rotation trajectory of the clamping assembly, and the depth of the U-shaped groove is greater than the radius of the steel pipe.

[0012] The beneficial effects of this utility model are: 1. Increased efficiency: The dual-station clamping assembly simultaneously grips two steel pipes. Combined with the coordinated movement of the horizontal / vertical displacement assembly, the single transfer time is reduced to 5 seconds, which improves efficiency compared to manual operation. 2. Precise positioning: The V-shaped limit groove and stop component of the feeding mechanism ensure the axial positioning accuracy of the steel pipe, and the U-shaped support of the discharging mechanism receives the rotated steel pipe to meet the welding posture requirements; 3. Strong compatibility: The clamping jaws of the fixture assembly are compatible with steel pipes of different diameters; 4. Space optimization: The rear-side layout of the rotating mechanism shortens the clamp's movement trajectory and reduces the equipment's footprint; 5. Fully automated: From sensor-triggered positioning, pneumatic gripper synchronous gripping, servo motor precise 90° rotation to automatic output of release cylinder, the entire process is unmanned. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a schematic diagram of the rotating mechanism; Figure 3 This is a top view of the feeding mechanism; Figure 4 This is a top view of the discharge mechanism; Figure 5 This is a cross-sectional view of the V-shaped limiting groove; Figure 6 This is a cross-sectional view of the U-shaped bracket.

[0015] In the diagram: 1. Workbench; 2. Feeding mechanism; 21. Feeding roller conveyor; 211. V-shaped limit groove; 22. Stop assembly; 221. Stop block; 222. Cylinder; 23. Steel pipe positioning sensor; 3. Rotation mechanism; 31. Support frame; 32. Horizontal displacement assembly; 321. Horizontal guide rail; 322. Horizontal drive screw; 33. Vertical displacement assembly; 331. Vertical guide rail; 332. Vertical drive screw; 34. Rotation assembly; 341. Rotation drive cylinder; 342. Rack; 343. Gear; 35. Clamp assembly; 4. Discharge mechanism; 41. Receiving frame; 411. Buffer pad; 412. U-shaped support groove; 42. Release cylinder; 43. Output roller conveyor. Detailed Implementation

[0016] like Figure 1 This is a schematic diagram of the structure of this utility model, a pre-welding conversion device for cold-drawn steel pipes, including a workbench 1 and a feeding mechanism 2, a rotating mechanism 3, and a discharging mechanism 4 disposed on the workbench 1; the feeding mechanism 2 and the discharging mechanism 4 are arranged side by side on the workbench 1, and the rotating mechanism 3 is located directly behind the feeding mechanism 2 and the discharging mechanism 4; the rotating mechanism 3 includes a support frame 31, a horizontal displacement component 32, a vertical displacement component 33, a rotating component 34, and a clamping component 36; the horizontal displacement component 32 is fixed to the workbench 1 by two sets of support frames 31, and the vertical displacement component 33 is slidably connected above the horizontal displacement component 32; the rotating component 34 is slidably connected to the surface of the vertical displacement component 33, and the output end of the rotating component 34 is symmetrically connected to two sets of clamping components 35.

[0017] Specifically, the workbench 1 serves as the mounting reference platform for the feeding mechanism 2, rotating mechanism 3, and discharging mechanism 4, providing a horizontal mounting surface to ensure the spatial positioning accuracy of the three mechanisms. Its overall rigidity is strong, preventing resonance during mechanism movement. The support frame 31 supports a horizontal displacement component 32, raising the horizontal guide rail 321 300mm above the steel pipe to resist the torsional torque of the horizontal drive screw 322. The H-shaped steel frame has a bending stiffness ≥1800N / mm². The horizontal displacement component 32 drives the clamp to move back and forth, the horizontal guide rail 321 guides the movement trajectory, and the screw 322 converts the motor rotation into linear motion. The vertical displacement component 33 controls the clamp's lifting and lowering. The vertical guide rail 331 ensures vertical accuracy during clamping / releasing, and the screw 332 achieves micro-lowering positioning. The maximum load is 200kg, and the speed is adjustable. The clamp component 36 clamps / releases the steel pipe, with pneumatic grippers featuring arc-shaped grooves that conform to the pipe wall, and soft polyurethane pads preventing surface scratches.

[0018] According to another embodiment of the present invention, the horizontal displacement component 32 further includes a horizontal guide rail 321 and a horizontal drive screw 322. The two ends of the horizontal guide rail 321 are fixed to two sets of support frames 31, and the vertical displacement component 33 is slidably connected to the horizontal guide rail 321 through a slider.

[0019] According to another embodiment of the present invention, the vertical displacement component 33 includes a vertical guide rail 331 and a vertical drive screw 332, and the rotation component 34 is slidably connected to the vertical guide rail 331 through a fixed plate.

[0020] According to another embodiment of the present invention, the rotating assembly 34 further includes a rotating drive cylinder 341, a rack 342, and a gear 343. The output rod of the rotating drive cylinder 341 is connected to the rack 342. Two sets of gears 343 mesh on the rack 342. The central shaft of the gear 343 is connected to the clamp assembly 35.

[0021] Specifically, the rotary drive cylinder 341 drives the rack 342 to move horizontally, which in turn drives the gear 343 on the rack 342 to rotate, achieving a rotational effect. The rotation of the gear 343 is transmitted to the clamp assembly 35 via the central shaft.

[0022] According to another embodiment of the present invention, the clamping assembly 36 is a pneumatic gripper, and its clamping surface is provided with an arc-shaped groove that matches the outer diameter of the steel pipe.

[0023] According to another embodiment of the present invention, the feeding mechanism 2 further includes: a parallel feeding roller conveyor 21, the axis of which is consistent with the length direction of the worktable 1; a stop assembly 22 is provided at the end of the roller conveyor, including a liftable stop block 221 and a cylinder 222 for driving it; a steel pipe positioning sensor 23 is provided on the front side of the stop assembly 22 for detecting that the steel pipe has reached the picking position; the roller surface of the feeding roller conveyor 21 is provided with a V-shaped limiting groove 211, the bottom width of which matches the outer diameter of the steel pipe, and the distance between adjacent roller conveyors is less than 1 / 3 of the length of the steel pipe.

[0024] Specifically, the feeding roller conveyor 21 transports parallel steel pipes to the picking station, the V-shaped limiting groove 211 constrains the radial displacement of the steel pipe, the roller spacing is less than 1 / 3 of the steel pipe length to prevent bending deformation, it is suitable for conveying 3-6m long pipes, and the linear speed is adjustable; the stop component 22 accurately positions the steel pipe picking position, the stop block 221 intercepts the steel pipe when it rises, and releases the clamping space when it falls, the cylinder 222 has a short drive response time, high repeatability positioning accuracy, and avoids clamp impact.

[0025] According to another embodiment of the present invention, the discharge mechanism 4 further includes: a receiving frame 41, which is lower than the feeding roller conveyor 21 and has a buffer pad 411 on its top surface; release cylinders 42 that can be opened and closed horizontally are symmetrically arranged on both sides of the receiving frame 41; an inclined output roller conveyor 43 is connected downstream of the receiving frame 41, and its inclined direction points to the outside of the worktable 1; a U-shaped groove 412 is provided on the top of the receiving frame 41, the opening direction of which is tangent to the rotation trajectory of the clamp assembly 36, and the depth of the U-shaped groove 412 is greater than the radius of the steel pipe.

[0026] In the specific operation process, the V-shaped limiting groove 211 of the feeding roller conveyor 21 supports and conveys the parallel steel pipe; the steel pipe stops after touching the stop block 221 of the stop assembly 22, and the positioning sensor 23 detects the positioning signal; the stop block 221 descends below the roller surface under the drive of the cylinder 222. The horizontal displacement assembly 32 drives the vertical displacement assembly 33 to move forward along the horizontal guide rail 321 to directly above the steel pipe; the vertical displacement assembly 33 descends, and the arc-shaped groove of the pneumatic gripper 35 clamps the steel pipe. The vertical displacement assembly 33 lifts the steel pipe to a safe height; the horizontal displacement assembly 32 moves backward, bringing the steel pipe directly above the discharge mechanism 4; the rotation assembly 35 drives the clamp to rotate 90° (the steel pipe changes from horizontal to vertical). The vertical displacement assembly 33 descends, placing the vertical steel pipe into the U-shaped support groove 412 of the receiving frame 41; the pneumatic gripper 36 releases, and the release cylinder 42 retracts laterally; the steel pipe slides out of the working area along the inclined output roller conveyor 43, completing a single conversion.

[0027] The above description is illustrative only and not restrictive of this utility model. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all such modifications, variations or equivalents will fall within the protection scope of this utility model.

Claims

1. A conversion device for cold-drawn steel pipes before welding, characterized in that, The system includes a workbench (1) and a feeding mechanism (2), a rotating mechanism (3), and a discharging mechanism (4) mounted on the workbench (1). The feeding mechanism (2) and the discharging mechanism (4) are arranged side by side on the workbench (1), and the rotating mechanism (3) is located directly behind the feeding mechanism (2) and the discharging mechanism (4). The rotating mechanism (3) includes a support frame (31), a horizontal displacement component (32), a vertical displacement component (33), a rotating component (34), and a clamping component (35). The horizontal displacement component (32) is fixed to the workbench (1) by two sets of support frames (31), and the vertical displacement component (33) is slidably connected above the horizontal displacement component (32). The rotating component (34) is slidably connected to the surface of the vertical displacement component (33), and the output end of the rotating component (34) is symmetrically connected to two sets of clamping components (35).

2. The pre-welding conversion device for cold-drawn steel pipes according to claim 1, characterized in that, The horizontal displacement component (32) includes a horizontal guide rail (321) and a horizontal drive screw (322). The two ends of the horizontal guide rail (321) are fixed to two sets of support frames (31). The vertical displacement component (33) is slidably connected to the horizontal guide rail (321) through a slider.

3. The pre-welding conversion device for cold-drawn steel pipes according to claim 1, characterized in that, The vertical displacement component (33) includes a vertical guide rail (331) and a vertical drive screw (332), and the rotation component (34) is slidably connected to the vertical guide rail (331) through a fixed plate.

4. The pre-welding conversion device for cold-drawn steel pipes according to claim 1, characterized in that, The rotating assembly (34) includes a rotary drive cylinder (341), a rack (342) and a gear (343). The output rod of the rotary drive cylinder (341) is connected to the rack (342). Two sets of gears (343) mesh on the rack (342). The central shaft of the gear (343) is connected to the clamp assembly (35).

5. The pre-welding conversion device for cold-drawn steel pipes according to claim 1, characterized in that, The clamping assembly (35) is a pneumatic gripper, and its clamping surface is provided with an arc-shaped groove that matches the outer diameter of the steel pipe.

6. The pre-welding conversion device for cold-drawn steel pipes according to claim 1, characterized in that, The feeding mechanism (2) includes: a parallel feeding roller conveyor (21) whose axis direction is consistent with the length direction of the worktable (1); a stop assembly (22) is provided at the end of the roller conveyor, including a liftable stop block (221) and a cylinder (222) for driving it; a steel pipe positioning sensor (23) is provided on the front side of the stop assembly (22) to detect when the steel pipe reaches the picking station; the roller surface of the feeding roller conveyor (21) is provided with a V-shaped limiting groove (211), the bottom width of which matches the outer diameter of the steel pipe, and the distance between adjacent roller conveyors is less than 1 / 3 of the length of the steel pipe.

7. The pre-welding conversion device for cold-drawn steel pipes according to claim 1, characterized in that, The discharge mechanism (4) includes: a receiving frame (41) which is lower than the feeding roller conveyor (21) and has a buffer pad (411) on its top surface; release cylinders (42) that can be opened and closed horizontally are symmetrically arranged on both sides of the receiving frame (41); the downstream of the receiving frame (41) is connected to the output roller conveyor (43), which is inclined in the direction of the output roller conveyor (43) and points to the outside of the worktable (1); the top of the receiving frame (41) is provided with a U-shaped groove (412), the opening direction of which is tangent to the rotation trajectory of the clamp assembly (35), and the depth of the U-shaped groove (412) is greater than the radius of the steel pipe.

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