Clamping device for fixing square tube

Abstract

The utility model discloses a square tube fixing clamping device which comprises a bottom plate and double-layer portal frames fixed on two end faces of the top end of the bottom plate, lower supporting beams used for being fixedly connected with the end face of the top end of the bottom plate are installed at the bottoms of the two double-layer portal frames, and upper clamping beams are arranged in the double-layer portal frames above the lower supporting beams. The bottom ends of the upper clamping beams and the top end of the lower bearing beam are provided with a plurality of right-angle notches in one-to-one correspondence, a connecting column is fixed between the opposite outer walls of the two upper clamping beams, and double-rod type elastic supporting structures used for being connected with the bottom ends of the upper clamping beams are installed on the left outer wall and the right outer wall of the double-layer portal frame correspondingly. Through the coordination effect of the transverse moving push-pull unit and the double-rod type elastic supporting structure, the upper clamping beam can be effectively close to the lower bearing beam, synchronous clamping operation of a plurality of square tube workpieces is achieved, the workpiece clamping efficiency in each work period can be remarkably improved through the parallel processing capacity, and therefore the overall production speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of square tube processing, in particular to a clamping device for fixing a square tube. Background Art

[0002] The square tube clamping device plays a vital role in the welding and machining process. Its main functions include fixing the position and direction of the workpiece to ensure machining accuracy and safe operation. The clamping device is composed of a clamping body, a fixing mechanism, an adjustment device and an auxiliary support device. The structural design takes into account the shape and size of the square tube to ensure a stable and reliable clamping effect. The working principle relies on the application of friction and pressure to ensure that the clamping body is firmly fixed on the workbench and adapts to the size and shape changes of the square tube. Through reasonable design and application, the square tube clamping device not only improves the efficiency and quality of the processing process, but also effectively ensures the safety of the operators; as disclosed in the authorization announcement number CN219787152U, a clamping and fixing device for square tube welding includes two first brackets, a second bracket, a third bracket and a base plate, and the first bracket, the second bracket and the third bracket respectively have a plurality of positioning holes, the end face of the base plate has a slide groove, the two first brackets are respectively fixedly connected to the base plate and symmetrically arranged on the end face of the base plate, the second bracket is slidably connected to the base plate and is located in the slide groove, and the square tube assembly rack is clamped and fixed to the base plate through the cooperation of the first bracket, the second bracket and the third bracket, which can realize the rapid positioning and clamping of the square tube assembly rack. This technical solution is a clamping structure for a single square pipe during use. Even if the fixing and processing process of the clamping device itself is very fast, the loading and unloading operation and adjustment time during the clamping process will become a bottleneck of the overall production efficiency, especially for mass production, which will affect the improvement of production efficiency and output. Utility Model Content

[0003] The purpose of the utility model is to provide a square tube fixing clamping device, which is provided with an upper clamping beam and a lower supporting beam with multiple right-angle notches, and the upper clamping beam is driven by components such as a transverse push-pull unit and a double-rod elastic support structure of a thrust block to approach the lower supporting beam, thereby synchronously completing the clamping operation of multiple square tube workpieces to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a square tube fixing clamping device, comprising a base plate and a double-layer gantry fixed to the two end surfaces of the top end of the base plate, the bottom of the two double-layer gantries are installed with a lower supporting beam for being fixedly connected to the end surface of the top end of the base plate, and an upper clamping beam is arranged inside the double-layer gantry above the lower supporting beam, and a plurality of right-angle notches corresponding to each other are arranged at the bottom end of the upper clamping beam and the top end of the lower supporting beam, and a connecting column is fixed between the relative outer walls of the two upper clamping beams, and a double-rod elastic supporting structure for being interconnected with the bottom ends of the upper clamping beams is installed on the left and right outer walls of the double-layer gantries, a transverse sliding push-pull unit is installed inside one of the double-layer gantries, and a thrust block is installed at the movable end of the transverse sliding push-pull unit, and the bottom end slope of the thrust block contacts the top end of the upper clamping beam.

[0005] Preferably, four right-angle notches are respectively provided on the upper clamping beam and the lower supporting beam, and the upper clamping beam and the lower supporting beam are made of aluminum alloy.

[0006] Preferably, the transverse push-pull unit includes a support plate fixed inside one of the double-layer gantries, and a cylinder installed on the back of the support plate, and the top end of the piston rod of the cylinder is fixedly connected to one end of the thrust block.

[0007] Preferably, the transverse push-pull unit also includes a linear hollow groove arranged on the front and rear outer walls of the double-layer gantry and a slide slidably installed inside the linear hollow groove, and one end of the slide is fixedly connected to the outer wall of one side of the thrust block.

[0008] Preferably, two connecting columns are provided, and the two connecting columns are symmetrically structured with respect to the vertical center reference plane of the double-layer gantry.

[0009] Preferably, the double-rod elastic support structure includes a support plate fixed on the outer wall of one side of the double-layer gantry, a sliding column slidably installed inside the support plate, and a coil spring mounted on the outer circumference of the sliding column. Lugs are integrally formed on the outer walls of both sides of the upper clamping beam, and the bottom end of the lug is fixedly connected to the top end of the sliding column. A guide cylinder concentric with the sliding column is fixed to the bottom end of the support plate, and the bottom end of the sliding column extends to the outside of the guide cylinder.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the square tube fixed clamping device utilizes an upper clamping beam and a lower supporting beam with multiple right-angle notches to clamp multiple square tube workpieces at the same time, and through the coordinated action of the transverse push-pull unit and the double-rod elastic support structure, the upper clamping beam can effectively approach the lower supporting beam to realize the synchronous clamping operation of multiple square tube workpieces. This parallel processing capability can significantly improve the workpiece clamping efficiency in each working cycle, thereby speeding up the overall production speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0013] Figure 3 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0014] Figure 4 The three-dimensional structure of the utility model is shown in FIG. Figure 3 ;

[0015] Figure 5 The three-dimensional structure of the utility model is shown in FIG. Figure 4 ;

[0016] In the figure: 1, bottom plate; 2, double-layer gantry; 3, upper clamping beam; 301, lug; 4, double-rod elastic support structure; 401, support plate; 402, guide cylinder; 403, sliding column; 404, spiral spring; 5, connecting column; 6, thrust block; 7, transverse push-pull unit; 701, support plate; 702, cylinder; 703, straight hollow groove; 704, slide; 8, lower supporting beam; 9, right-angle notch. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-5 The utility model provides an embodiment: a square tube fixing clamping device, comprising a bottom plate 1 and a double-layer gantry 2 fixed to both end surfaces of the top of the bottom plate 1, the bottoms of the two double-layer gantry 2 are both installed with a lower supporting beam 8 for fixed connection with the top end surface of the bottom plate 1, an upper clamping beam 3 is arranged inside the double-layer gantry 2 above the lower supporting beam 8, and a plurality of right-angle notches 9 corresponding to each other are arranged at the bottom end of the upper clamping beam 3 and the top end of the lower supporting beam 8, and a connecting column 5 is fixed between the relative outer walls of the two upper clamping beams 3, and two connecting columns 5 are arranged, and the two connecting columns 5 are symmetrically structured with respect to the vertical center reference plane of the double-layer gantry 2;

[0019] A double-rod elastic support structure 4 for interconnecting with the bottom end of the upper clamping beam 3 is installed on both the left and right outer walls of the double-layer gantry 2, a lateral push-pull unit 7 is installed inside one of the double-layer gantry 2, and a thrust block 6 is installed at the movable end of the lateral push-pull unit 7, and the bottom end slope of the thrust block 6 is in contact with the top end of the upper clamping beam 3;

[0020] The workpiece located between the upper clamping beam 3 and the lower supporting beam 8 ensures the position accuracy of the square tube workpiece during the processing by means of a reasonably designed elastic support and fixing mechanism, effectively reducing the position offset or deformation of the square tube during the processing;

[0021] Four right-angle notches 9 are respectively arranged on the upper clamping beam 3 and the lower supporting beam 8. The upper clamping beam 3 and the lower supporting beam 8 are made of aluminum alloy. The structure of the right-angle notches 9 can evenly distribute the clamping force to avoid deformation or damage caused by concentration on a single point.

[0022] The transverse push-pull unit 7 includes a support plate 701 fixed inside one of the double-layer gantry frames 2, and a cylinder 702 installed on the back of the support plate 701, the top end of the piston rod of the cylinder 702 is fixedly connected to one end of the thrust block 6, and the transverse push-pull unit 7 also includes a straight hollow groove 703 set on the front and rear outer walls of the double-layer gantry 2 and a slide 704 slidably installed inside the straight hollow groove 703, and one end of the slide 704 is fixedly connected to one side outer wall of the thrust block 6;

[0023] During the lifting and lowering of the upper clamping beam 3, the cylinder 702 provides a push-pull force, and the cylinder 702 pulls the thrust block 6 to slide toward the inside of the double-layer gantry 2. During this process, the sliding guide structure formed by the slide 704 and the straight hollow groove 703 can ensure the movement stability of the thrust block 6. The thrust block 6 forces the upper clamping beam 3 to move downward until the upper clamping beam 3 and the lower supporting beam 8 clamp the square tube workpiece to ensure the subsequent processing accuracy.

[0024] The double-rod elastic support structure 4 includes a support plate 401 fixed on the outer wall of one side of the double-layer gantry 2, a sliding column 403 slidably installed inside the support plate 401, and a coil spring 404 mounted on the outer circumference of the sliding column 403. The outer walls of both sides of the upper clamping beam 3 are integrally formed with lugs 301, and the bottom end of the lug 301 is fixedly connected to the top of the sliding column 403. A guide cylinder 402 concentric with the sliding column 403 is fixed at the bottom end of the support plate 401, and the bottom end of the sliding column 403 penetrates to the outside of the guide cylinder 402. When the transverse push-pull unit 7 forces the thrust block 6 to reset, the coil spring 404 in the double-rod elastic support structure 4 begins to reset from the compressed state, and the coil spring 404 forces the slide column 403, the lug 301 and the upper clamping beam 3 to move upward, so that the upper clamping beam 3 and the lower supporting beam 8 are reset separately. During this process, the guide cylinder 402 serves as a movement guide for the slide column 403 until the upper clamping beam 3 and the lower supporting beam 8 are completely separated and the workpiece is released, thereby simplifying the operation process and reducing manual intervention and operation time.

[0025] When the embodiment of the present application is in use, the staff first places the device on the machining equipment, and then sets up multiple square tube fittings to be clamped on the top of the two lower supporting beams 8, and makes one of the right-angled sides of the square tube fittings embedded in the right-angled notch 9 at the top of the lower supporting beam 8. After all the square tube fittings are debugged, the staff starts the transverse push-pull unit 7 to work, and the transverse push-pull unit 7 pulls the thrust block 6 to move toward the inside of the double-layer gantry 2. Since the bottom end of the thrust block 6 is a slope, when the thrust block 6 moves toward the inside of the double-layer gantry 2, the thrust block 6 will force the upper clamping beam 3 to move downward and approach the lower supporting beam 8, and the other upper clamping beam 3 will also move synchronously under the drive of the connecting column 5, thereby utilizing the lower The moving action causes the square tube fittings to be clamped and fixed by the upper clamping beam 3 and the lower supporting beam 8, that is, the right-angled sides of the top and bottom ends of the square tube fittings are divided into the right-angled notches 9 located in the upper clamping beam 3 and the lower supporting beam 8 to ensure that the square tube fittings are fixed stably, and at this time, multiple square tube fittings can be clamped and fixed between the upper clamping beam 3 and the lower supporting beam 8. The device utilizes the upper clamping beam 3 and the lower supporting beam 8 with multiple right-angled notches 9 to clamp multiple square tube workpieces at the same time, and through the coordinated action of the transverse push-pull unit 7 and the double-rod elastic support structure 4, the upper clamping beam 3 can effectively approach the lower supporting beam 8 to realize the synchronous clamping operation of multiple square tube workpieces. This parallel processing capability significantly improves the workpiece clamping efficiency in each working cycle, thereby speeding up the overall production speed.

Claims

1. A clamping device for fixing a square tube, characterized in that: The invention comprises a bottom plate (1) and a double-layer gantry (2) fixed to both end surfaces of the top of the bottom plate (1), the bottoms of the two double-layer gantry (2) are both provided with a lower supporting beam (8) for fixed connection with the end surface of the top of the bottom plate (1), an upper clamping beam (3) is arranged inside the double-layer gantry (2) above the lower supporting beam (8), a plurality of right-angle notches (9) corresponding to each other are arranged at the bottom end of the upper clamping beam (3) and the top end of the lower supporting beam (8), and the two upper A connecting column (5) is fixed between the opposite outer walls of the clamping beam (3), and a double-rod elastic support structure (4) for interconnecting with the bottom end of the upper clamping beam (3) is installed on the left and right outer walls of the double-layer gantry (2). A transverse push-pull unit (7) is installed inside one of the double-layer gantry (2), and a thrust block (6) is installed at the movable end of the transverse push-pull unit (7), and the bottom end slope of the thrust block (6) is in contact with the top end of the upper clamping beam (3).

2. A square tube fixing clamping device according to claim 1, characterized in that: Four right-angle notches (9) are respectively arranged on the upper clamping beam (3) and the lower supporting beam (8); the upper clamping beam (3) and the lower supporting beam (8) are made of aluminum alloy.

3. A square tube fixing clamping device according to claim 1, characterized in that: The transverse push-pull unit (7) comprises a support plate (701) fixed inside one of the double-layer gantries (2), and a cylinder (702) installed on the back of the support plate (701), and the top end of the piston rod of the cylinder (702) is fixedly connected to one end of the thrust block (6).

4. A square tube fixing clamping device according to claim 1, characterized in that: The transverse push-pull unit (7) further comprises a linear hollow groove (703) arranged on the front and rear outer walls of the double-layer gantry (2) and a sliding plate (704) slidably mounted inside the linear hollow groove (703); one end of the sliding plate (704) is fixedly connected to one side outer wall of the thrust block (6).

5. A square tube fixing clamping device according to claim 1, characterized in that: Two connecting columns (5) are provided, and the two connecting columns (5) are symmetrically structured with respect to the vertical center reference plane of the double-layer gantry (2).

6. A square tube fixing clamping device according to claim 1, characterized in that: The double-rod elastic support structure (4) comprises a support plate (401) fixed on the outer wall of one side of the double-layer gantry (2), a sliding column (403) slidably installed inside the support plate (401), and a coil spring (404) mounted on the outer circumference of the sliding column (403). Lugs (301) are integrally formed on the outer walls of both sides of the upper clamping beam (3), and the bottom end of the lug (301) is fixedly connected to the top end of the sliding column (403). A guide cylinder (402) concentric with the sliding column (403) is fixed to the bottom end of the support plate (401), and the bottom end of the sliding column (403) passes through the outside of the guide cylinder (402).

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