A multi-layer welding fixture for a column piece

Abstract

The utility model discloses a kind of column piece multilayer welding clamps, belong to welding fixture technical field;The clamp includes workbench, guide assembly and the adjusting plate of slidable cooperation in guide assembly fixed support;Its core is in, workbench is provided with clamping mechanism, the clamping mechanism includes two clamps, two moving blocks and two-way threaded rod;Two-way threaded rod two ends thread rotation direction is opposite and respectively with moving block thread engagement, moving block fixedly connected clamp and slidingly connected in the movable clamping slot of workbench.In preferably, motor and two-way threaded rod coaxial fixed connection to realize automatic clamping.The utility model is driven by motor by setting two-way threaded rod clamping mechanism, and vertically adjusting mechanism can be quickly inserted and positioned, solve the problem of low clamping efficiency, inaccurate positioning and complicated adjustment in prior art, with the advantages of high degree of clamping automation, accurate positioning, convenient adjustment.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, and in particular to a multi-layer welding fixture for column plates. Background Technology

[0002] Welding fixtures are key process equipment in the welding production process, used to accurately position and reliably clamp the workpieces before welding operations. In the manufacturing of components such as shelf uprights and frame structures, it is often necessary to weld and fix multiple stacked upright pieces to ensure their structural strength and functionality.

[0003] Existing welding fixtures generally have certain limitations when dealing with multi-layer column workpieces. Many fixtures have relatively simple structural designs, and when clamping and positioning, they often rely on multiple independently set manual screw clamping devices or pressure blocks to fix the workpiece from both sides.

[0004] This independent, manual clamping method reveals significant shortcomings in practical operation. Operators need to tighten the clamping devices on both sides individually, which is not only time-consuming and labor-intensive, resulting in low overall clamping efficiency; more importantly, because the clamping actions on both sides are not synchronized and the applied clamping force is difficult to ensure uniformity, the workpiece is very prone to shifting during clamping, causing the final positioning to deviate from the reference center. This instability in positioning accuracy directly affects the accuracy of subsequent automated welding and the consistency of the finished product.

[0005] Therefore, this utility model proposes a multi-layer welding fixture for column plates to overcome the shortcomings of the prior art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a multi-layer welding fixture for column plates, which aims to improve the problems of cumbersome adjustment of the fixture for workpieces with different layers, low efficiency and low clamping and positioning accuracy in the existing technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer welding fixture for column plates, comprising: a worktable, a guide assembly, an adjustment plate; and a clamping mechanism disposed within the worktable. The guide assembly includes a fixed bracket vertically and fixedly connected to the worktable.

[0008] The clamping mechanism includes two clamping plates, two moving blocks, and a bidirectional threaded rod.

[0009] Furthermore, the adjusting plate is slidably fitted to the fixed bracket, the two clamping plates are symmetrically arranged on the worktable, the two moving blocks are respectively fixedly connected to the corresponding clamping plates and slidably connected to the movable slots opened in the worktable, the bidirectional threaded rod is rotatably arranged in the worktable and the threads at both ends of the rod are opposite in direction, and the two ends of the bidirectional threaded rod are respectively threadedly engaged with the corresponding moving blocks.

[0010] Preferably, the clamping mechanism further includes a motor, the output end of which is coaxially and fixedly connected to the bidirectional threaded rod.

[0011] Preferably, the fixed bracket has positioning holes distributed along its length; the multi-layer welding fixture for the column plate also includes a fixing component, which is installed on the upper surface of the adjusting plate, and the fixing component includes a socket that can be selectively inserted into the positioning holes.

[0012] Preferably, the fixing assembly further includes a fixing base and a spring surrounding the outside of the socket, the socket being telescopically inserted through the fixing base.

[0013] Preferably, the two ends of the spring abut against the outer wall of the fixed base and the socket, respectively.

[0014] Preferably, the fixing component further includes a locking block disposed on the socket; the fixing base has a limiting slot for the locking block to be engaged or disengaged, and the locking block is used to engage or disengage the socket.

[0015] Preferably, the guide assembly further includes a limiting seat, which is fixedly connected to the end of the fixed bracket away from the worktable.

[0016] Preferably, a threaded sleeve is also fixedly connected to the adjusting plate, and a threaded clamp is internally connected to the threaded sleeve.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by setting up a clamping mechanism in which a bidirectional threaded rod driven by a motor rotates, thereby driving two moving blocks to move synchronously in opposite directions or in opposite directions, so as to drive two clamping plates to achieve synchronous clamping of the workpiece, the problem of low efficiency and easy positioning deviation in the prior art when clamping workpieces is solved. The technical effect of quickly and automatically centering and clamping the workpiece is achieved, improving clamping efficiency and positioning accuracy.

[0018] 2. In this utility model, by opening multiple positioning holes on the fixed bracket and setting a socket with a spring reset function on the adjustable plate that can slide up and down, the socket can be selectively inserted into different positioning holes. This solves the problem of cumbersome and time-consuming operation when adjusting the height of the fixture to adapt to different layers of workpieces in the prior art. It achieves the technical effect of quickly and conveniently adjusting the vertical position, and enhances the applicability and ease of operation of the fixture to different workpieces.

[0019] 3. In this utility model, by integrating the rapid vertical positioning mechanism and the automatic synchronous clamping mechanism into a single structure, and using a threaded clamp set above the adjustment plate for auxiliary clamping, the problems of fragmented fixture structure, single function, and discontinuous overall adjustment and clamping process in the prior art are solved. This achieves the technical effect of compact structure, good stability, integration of rapid adjustment and automatic clamping, and significant improvement of overall work efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a multi-layer welding fixture for column plates proposed in this utility model; Figure 2 This is a schematic diagram of the fixed support structure of a multi-layer welding fixture for column plates proposed in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 This is a schematic diagram of the clamping plate structure of a multi-layer welding fixture for column plates proposed in this utility model.

[0021] Legend: 1. Workbench; 2. Adjusting plate; 3. Guide assembly; 301. Limit seat; 302. Fixed bracket; 303. Positioning hole; 4. Threaded sleeve; 5. Threaded clamp; 6. Fixed assembly; 601. Socket; 602. Fixed base; 603. Spring; 604. Limiting slot; 605. Clamping block; 7. Clamping mechanism; 701. Clamping plate; 702. Moving block; 703. Bidirectional threaded rod; 704. Motor; 705. Movable slot. Detailed Implementation

[0022] 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.

[0023] Please refer to Figures 1 to 4This utility model provides a multi-layer welding fixture for column plates. This fixture aims to solve the problems of cumbersome adjustment of the adaptability of the fixture to workpieces with different layers, low efficiency and low clamping and positioning accuracy in the prior art.

[0024] The multi-layer column welding fixture includes a worktable 1 and a guide assembly 3 vertically fixedly connected to the worktable 1. The worktable 1 serves as the mounting base for the entire device and supports the workpiece to be welded. The guide assembly 3 provides an installation reference and guidance for the upper structure of the device. The multi-layer column welding fixture also includes an adjusting plate 2, which is slidably fitted to the fixed bracket 302 of the guide assembly 3, thereby enabling the adjusting plate 2 to move up and down along the guide assembly 3. One of the core innovations of this solution is the setting of a clamping mechanism 7, which is completely set inside the worktable 1 and is used to stably and reliably clamp the multi-layer column workpiece placed on the worktable 1. Specifically, the clamping mechanism 7 includes two clamping plates 701, two moving blocks 702, and a bidirectional threaded rod 703. The two clamping plates 701 are symmetrically arranged on the worktable 1, and the upper end face of the clamping plates 701 is used to directly contact and clamp the workpiece. The two moving blocks 702 are respectively fixedly connected to the corresponding clamping plates 701. At the bottom of plate 701, serving as the moving carrier for clamping plate 701, two parallel movable slots 705 are correspondingly provided in the worktable 1. Each moving block 702 is slidably connected in the corresponding movable slot 705. The movable slot 705 provides a precise linear motion guide for the moving block 702. The bidirectional threaded rod 703 is rotatably set in the worktable 1, and the axis of the bidirectional threaded rod 703 is parallel to the extension direction of the two movable slots 705. The bidirectional threaded rod 703 is located between the two moving blocks 702. It is worth noting that the two ends of the bidirectional threaded rod 703 are machined with threads of opposite directions, and the two ends of the bidirectional threaded rod 703 are threadedly engaged with the corresponding moving blocks 702. When the bidirectional threaded rod 703 rotates, due to the opposite direction of the threads, the two moving blocks 702 will move synchronously towards each other or away from each other under the action of thread engagement, thereby driving the two clamping plates 701 to achieve synchronous centering, clamping or loosening of the workpiece.

[0025] Motor 704 is installed on one side of worktable 1, and the output end of motor 704 is coaxially fixedly connected to bidirectional threaded rod 703. The start, stop and forward / reverse rotation of motor 704 can be precisely controlled by an external control system, thereby driving bidirectional threaded rod 703 to rotate, realizing automated, fast and precise drive control of the entire clamping mechanism 7. Another core innovation of this solution is the setting of a vertical positioning mechanism that can quickly adapt to workpieces with different layers. This mechanism is mainly achieved by the special structure on guide component 3 and the fixed component 6 installed on adjustment plate 2. Specifically, the guide assembly 3 has a plurality of positioning holes 303 distributed along its length on its fixed bracket 302. These positioning holes 303 provide multiple preset height levels for the adjusting plate 2. The fixing assembly 6 is installed on the upper surface of the adjusting plate 2 and moves up and down with the adjusting plate 2. The fixing assembly 6 includes a fixing base 602, a socket 601, a spring 603, a locking block 605, and a limiting slot 604. The fixing base 602 is fixedly connected to the adjusting plate 2, and the socket 601 is retractably inserted into the fixing base 602. Furthermore, the head shape and size of the socket 601 are adapted to the positioning hole 303 to achieve selective insertion. The spring 603 surrounds the outside of the socket 601, and the two ends of the spring 603 abut against the outer wall of the fixed base 602 and the socket 601 respectively. The spring 603 always provides the socket 601 with an elastic thrust in the direction of the fixed bracket 302. The locking block 605 is disposed on the surface of the socket 601, and the fixed base 602 is provided with a limiting slot 604 for the locking block 605 to rotate and limit its rotation range. When height adjustment is required, the operator rotates the locking block 605 to disengage it from the socket 601. At this time, the compressed spring 603 resets, pushing the socket 601 to disengage from the positioning hole 303. Then, the operator moves the adjusting plate 2 up and down to the new height position, aligning the socket 601 with the new positioning hole 303. Finally, the operator rotates the locking block 605 back to lock the socket 601, thus achieving quick and reliable vertical positioning of the adjusting plate 2.

[0026] In a preferred embodiment, in order to effectively limit the vertical movement range of the adjusting plate 2 and prevent the adjusting plate 2 from accidentally slipping off the fixed bracket 302, the guide assembly 3 also includes a limiting seat 301. The limiting seat 301 is fixedly connected to the end of the fixed bracket 302 away from the worktable 1, that is, the top of the fixed bracket 302. When the adjusting plate 2 moves upward to the highest position, the upper surface of the adjusting plate 2 will abut against the lower surface of the limiting seat 301, thereby playing a limiting protection role.

[0027] As another preferred embodiment, in order to provide auxiliary clamping at the top of the stacked column workpieces and further improve the stability during the welding process, a threaded sleeve 4 perpendicular to it is fixedly connected to the adjusting plate 2. A threaded clamp 5 is threadedly connected to the threaded sleeve 4. By rotating the threaded clamp 5, the lower end of the threaded clamp 5 can be extended downward or retracted upward, thereby applying an adjustable vertical clamping force to the workpiece placed on the workbench 1, effectively preventing the workpiece from warping and deforming under the influence of welding heat.

[0028] As a more specific implementation of the fixing component 6, in the assembled state, the two ends of the spring 603 abut against the inner wall of the fixing base 602 and the outer wall of the socket 601, respectively. This arrangement ensures that the spring 603 can always provide a stable and centered rebound force during the extension and retraction movement of the socket 601.

[0029] As a further optimization of the locking mechanism in the fixing component 6, in order to reliably maintain the pulled-out state of the socket 601 and prevent the adjustment plate 2 from changing position due to accidental reset of the socket 601 caused by vibration, when the locking block 605 is turned into the locking position of the limiting slot 604, the protruding part of the locking block 605 will engage in the annular groove of the socket 601 to form a firm axial lock. The locking state of the socket 601 will only be released when the operator actively turns the locking block 605 out of the limiting slot 604.

[0030] Working principle: When adjustment is required based on the number of layers or height of the workpiece, the vertical height is first positioned. During operation, the locking block 605 of the fixing component 6 is rotated to disengage the locking block 605 from the socket 601. The socket 601 is pulled backward so that the head of the socket 601 is completely disengaged from the positioning hole 303 on the fixing bracket 302. The compressed spring 603 is no longer restricted by the locking block 605 to engage with the limiting slot 604, and the locking block 605 is pushed back. The locking block 605 is set on the outer wall of the socket 601. Then, the adjusting plate 2 is slid up and down along the guide of the fixing bracket 302 to the target height so that the socket 601 is aligned with a new positioning hole 303. The locking block 605 is pushed to compress the spring 603 with the limiting slot 604, so that the socket 601 automatically resets and inserts into the new positioning hole 303 under the elastic potential energy of the spring 603. Finally, the locking block 605 is rotated in the opposite direction to relock the socket 601, thus completing the rapid vertical positioning of the adjusting plate 2. After the vertical height is adjusted, place the column piece to be welded on the workbench 1 between the two clamping plates 701. Start the external control system to make the motor 704 rotate. The motor 704 drives the bidirectional threaded rod 703 to rotate through a coaxial fixed connection. Since the two ends of the bidirectional threaded rod 703 have opposite thread directions and are threadedly engaged with the two moving blocks 702 respectively, the rotation of the bidirectional threaded rod 703 will drive the two moving blocks 702 to move synchronously towards each other under the guide of the movable slot 705, thereby realizing automatic centering and clamping of the workpiece. If it is necessary to apply auxiliary clamping force to the top of the workpiece, the threaded clamp 5 on the adjusting plate 2 can be rotated to press down and press against the upper surface of the workpiece.

Claims

1. A multi-layer welding fixture for column plates, comprising: Workbench (1); The guide assembly (3) includes a fixed bracket (302) that is vertically fixedly connected to the worktable (1). Adjustment plate (2), the adjustment plate (2) is slidably fitted to the fixed bracket (302); The multi-layer welding fixture for the column plate is characterized in that it further includes: The clamping mechanism (7) is disposed in the workbench (1). The clamping mechanism (7) includes two clamping plates (701), two moving blocks (702), and a bidirectional threaded rod (703). The two clamping plates (701) are symmetrically disposed in the workbench (1). The two moving blocks (702) are respectively fixedly connected to the corresponding clamping plates (701) and respectively slidably connected to the movable slots (705) opened in the workbench (1). The bidirectional threaded rod (703) is rotatably disposed in the workbench (1) and the threads at both ends of the rod are opposite in direction. The two ends of the bidirectional threaded rod (703) are respectively threadedly engaged with the corresponding moving blocks (702).

2. The multi-layer welding fixture for column plates according to claim 1, characterized in that, The clamping mechanism (7) also includes a motor (704), the output end of which is coaxially and fixedly connected to the bidirectional threaded rod (703).

3. The multi-layer welding fixture for column plates according to claim 1, characterized in that, The fixed bracket (302) has positioning holes (303) distributed along its length direction; the column plate multi-layer welding fixture also includes a fixing component (6), which is installed on the upper surface of the adjusting plate (2), and the fixing component (6) includes a socket (601) that can be selectively inserted into the positioning hole (303).

4. The multi-layer welding fixture for column plates according to claim 3, characterized in that, The fixing component (6) also includes a fixing base (602) and a spring (603) surrounding the outside of the socket (601), the socket (601) being telescopically inserted through the fixing base (602).

5. The multi-layer welding fixture for column plates according to claim 4, characterized in that, The two ends of the spring (603) abut against the outer walls of the fixed base (602) and the socket (601), respectively.

6. The multi-layer welding fixture for column plates according to claim 4, characterized in that, The fixing component (6) further includes a locking block (605) disposed on the socket (601); the fixing base (602) is provided with a limiting slot (604) for the locking block (605) to be engaged or disengaged, and the locking block (605) is used to engage or disengage the socket (601).

7. The multi-layer welding fixture for column plates according to claim 1, characterized in that, The guide assembly (3) also includes a limiting seat (301), which is fixedly connected to the end of the fixed bracket (302) away from the worktable (1).

8. The multi-layer welding fixture for column plates according to claim 1, characterized in that, A threaded sleeve (4) is also fixedly connected to the adjusting plate (2), and a threaded clamp (5) is threadedly connected to the threaded sleeve (4).

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