Welding fixture equipment

Abstract

The utility model relates to the technical field of welding fixtures, in particular to welding fixture equipment which comprises a base and linear guide rails arranged on the base at intervals and further comprises a driving device and two butt joint devices arranged on the linear guide rails. The driving device is configured to drive the two butt joint devices to move towards each other or away from each other; each of the two butt joint devices comprises a moving frame, a turnover mechanism and two clamping mechanisms; the moving frame comprises a bottom plate, a first supporting plate and a second supporting plate, wherein the first supporting plate and the second supporting plate are arranged on the two sides of the bottom plate. The bottom face of the bottom plate is connected with sliding blocks of the linear guide rails. The turnover mechanism is configured to be rotatably mounted on the first supporting plate and the second supporting plate; the two clamping mechanisms are movably arranged on the top face of the turnover mechanism. The utility model has the advantages that the butt joint of two workpieces is realized by adjusting the distance between the two movable frames, and then the fixation and angle adjustment of different types of workpieces are realized through the turnover mechanism and the clamping mechanism until the two workpieces rotate to a proper angle.

Description

Technical Field

[0001] The utility model relates to the technical field of welding fixtures, in particular to a welding fixture device. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that uses heat, high temperature, or high pressure to join metals or other thermoplastic materials such as plastics. When welding workpieces, welding fixtures are generally used to clamp and secure the workpieces to ensure contact between the welding surfaces or edges. Welding fixtures are used to ensure the size of the welded parts, improve assembly accuracy and efficiency, and prevent welding deformation.

[0003] Patent CN219274954U disclosed a welding fixture positioning mechanism on June 30, 2023, which mainly realizes the clamping and fixing of two workpieces to be welded to facilitate the operator's welding operation. However, there are still some shortcomings in actual use. For example, when welding the workpieces, the welding angle is neither fixed horizontally nor vertically, but the two workpieces are welded together at a specific angle according to requirements. The public document can only realize the clamping function of the workpiece, and cannot adjust the two workpieces to the appropriate angle and contact welding according to requirements, which is very inconvenient to use. Utility Model Content

[0004] In view of this, the utility model is to create a welding fixture device, which uses the positive and negative threads of the screw to drive two docking devices to move toward each other to achieve the docking of two workpieces, and realizes the clamping and angle change of the workpieces through the flipping mechanism and the clamping mechanism.

[0005] In order to achieve the above-mentioned purpose, the technical solution created by the utility model is implemented as follows:

[0006] A welding fixture device includes a base and linear guide rails arranged at intervals on the base, and also includes a driving device and two docking devices arranged on the linear guide rails; the driving device is configured to drive the two docking devices to move toward or away from each other; the two docking devices each include a movable frame, a flipping mechanism and two clamping mechanisms; the movable frame includes a base plate and a first support plate and a second support plate arranged on both sides of the base plate, and the bottom surface of the base plate is connected to the slider of the linear guide rail; the flipping mechanism is configured to be rotatably mounted on the first support plate and the second support plate, and can be driven to rotate; the two clamping mechanisms are movably arranged on the top surface of the flipping mechanism.

[0007] Furthermore, the flipping mechanism includes a first motor, a flipping frame and a brake, and a first rotating shaft and a second rotating shaft are respectively provided on both sides of the flipping frame connected to the first support plate and the second support plate; the fixed end of the first motor is fixed on one of the first support plate or the second support plate, and the brake is arranged on the other one of the first support plate or the second support plate that is different from the fixed end; the output end of the first motor is connected to one of the first rotating shaft or the second rotating shaft to drive the flipping frame to rotate; the other of the first rotating shaft or the second rotating shaft extends into the interior of the brake.

[0008] Furthermore, the flip frame is a hollow rectangular frame.

[0009] Furthermore, the two clamping mechanisms each include a movable plate, two U-shaped right-angle sliders, an L-shaped bracket, a cylinder, a pressure plate and a rubber block; the movable plate is arranged on the upper surface of the flip frame; the tops of the two vertical sections of the two U-shaped right-angle sliders are respectively connected to the movable plate, and the horizontal sections of the two U-shaped right-angle sliders are located below the flip frame, and bolts are provided on the horizontal sections. The tightness of the bolts is adjusted so that the two U-shaped right-angle sliders can be moved or fixed along the outer edge of the flip frame; the L-shaped bracket is arranged inverted on the movable plate, the top of the vertical section of the L-shaped bracket is connected to the movable plate, the cylinder is arranged on the horizontal section of the L-shaped bracket, the moving rod of the cylinder passes through the horizontal section and is connected to the pressure plate, and the rubber block is arranged on the pressure plate.

[0010] Furthermore, an arc-shaped groove is provided on the lower surface of the rubber block.

[0011] Furthermore, the driving device includes a second motor, a screw rod, a fixed block, a first nut and a second nut; the second motor is arranged on the base, the output shaft of the second motor is connected to one end of the screw rod through a coupling, and the other end of the screw rod is fixed to the base through a fixed block; the two ends of the screw rod are respectively provided with positive threads and negative threads in opposite directions, the first nut is screwed with the positive thread and fixed on one of the base plates, and the second nut is screwed with the negative thread and fixed on the other base plate; when the second motor drives the screw rod to rotate, the first nut and the second nut move toward or away from each other along the screw rod.

[0012] Compared with the existing technology, the invention of the utility model can achieve the following beneficial effects: by adjusting the distance between the two movable frames, the actual workpiece size and type of workpiece can be clamped and fixed, and then the angle of the workpiece can be adjusted by the flipping mechanism and the clamping mechanism until the two workpieces are rotated to the appropriate angle. Its structure is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 This is a structural schematic diagram of a welding fixture device provided by an embodiment of the present utility model from a first perspective;

[0015] Figure 2 This is a structural schematic diagram of a welding fixture device provided by an embodiment of the present utility model from a second perspective;

[0016] Figure 3 This is a structural diagram of the angle adjustment of the welding fixture device provided in accordance with an embodiment of the present utility model;

[0017] Figure 4 It is a structural schematic diagram of a movable frame and a first nut provided according to an embodiment of the utility model;

[0018] Figure 5 This is a schematic structural diagram of a flip frame provided according to an embodiment of the present utility model;

[0019] Figure 6 It is a structural schematic diagram of a clamping mechanism provided according to an embodiment of the present utility model;

[0020] Figure 7 It is a partial cross-sectional view of the connection between the U-shaped right-angle slider and the bolt and the flip frame provided in an embodiment of the utility model.

[0021] The accompanying drawings include: 1. base; 2. linear guide rail; 3. driving device; 31. second motor; 32. screw rod; 33. fixed block; 34. first nut; 35. second nut; 4. docking device; 41. movable frame; 411. bottom plate; 412. first support plate; 413. second support plate; 414. connecting hole; 42. flipping mechanism; 421. first motor; 422. flipping frame; 423. brake; 424. first rotating shaft; 425. second rotating shaft; 43. clamping mechanism; 431. movable plate; 432. U-shaped right-angle slider; 433. L-shaped bracket; 434. cylinder; 435. pressure plate; 436. rubber block; 437. tightening bolt; 438. arc groove. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. A person skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] like Figure 1-Figure 3 As shown, an embodiment of the present invention provides a welding fixture device, which includes a base 1 and linear guide rails 2 spaced apart on the base, and also includes a driving device 3 and two docking devices 4 arranged on the linear guide rails; the driving device 3 is configured to drive the two docking devices 4 to move toward or away from each other.

[0028] The two docking devices 4 each include a movable frame 41, a turning mechanism 42, and two clamping mechanisms 43. The turning mechanism 42 is configured to be rotatably mounted on a first support plate 412 and a second support plate 413 and can be driven to rotate; the two clamping mechanisms 43 are movably arranged on the top surface of the turning mechanism 42.

[0029] like Figure 4As shown, the movable frame 41 includes a base plate 411 and a first support plate 412 and a second support plate 413 provided on either side of the base plate. The bottom surface of the base plate 411 is connected to the slider of the linear guide rail 2. The first support plate 412 and the second support plate 413 have the same structure and a U-shaped outer profile. The flat surface of the U-shaped plate is connected to the base plate 411. A connecting hole 414 is provided at the center of the U-shaped arc for connecting the turning device 42. In this embodiment, the first support plate 412 and the second support plate 413 are connected to the base plate 411 by welding. In other embodiments, the first support plate 412 and the second support plate 413 are connected to the base plate 411 by bolts.

[0030] like Figure 3 、 Figure 5 As shown, the flip mechanism 42 includes a first motor 421, a flip frame 422, and a brake 423. The flip frame 422 is a hollow rectangular frame, and a first rotating shaft 424 and a second rotating shaft 425 are respectively provided on both sides of the flip frame 422 where it connects to the first support plate 412 and the second support plate 413. The first rotating shaft 424 and the second rotating shaft 425 are movably connected to the connecting holes 414 of the first support plate 412 and the second support plate 413 via bearings.

[0031] The fixed end of the first motor 421 is fixed to one of the first support plate 412 and the second support plate 413, and the brake 423 is disposed on the other of the first support plate 412 and the second support plate 413, which is different from the fixed end. The output end of the first motor 421 is connected to one of the first rotating shaft 424 and the second rotating shaft 425 to drive the flip frame 422 to rotate. The other of the first rotating shaft 424 and the second rotating shaft 425 extends into the interior of the brake 423. In this embodiment, the fixed end of the first motor 421 is fixed to the first support plate 412, the brake 423 is disposed on the second support plate 413, the output end of the first motor 421 is connected to the first rotating shaft 424, and the second rotating shaft 425 extends into the interior of the brake 423 to lock the position of the flip frame 422.

[0032] The first motor 421 drives the flip frame 422 to flip, which in turn drives the clamping mechanism 43 to rotate, adjusting the angle of the clamped workpiece. Once the angle is adjusted, the first motor 421 stops, and the brake 423 brakes the second rotating shaft 425, fixing the angle of the workpiece. The brake 423, also known as a mechanical brake, primarily serves to slow down and stop the vehicle, much like applying the brakes when driving a car. This is a prior art technology, and therefore its specific structure and operating principles will not be elaborated upon herein.

[0033] like Figure 6 、 Figure 7As shown, the two clamping mechanisms 43 each include a movable plate 431, two U-shaped right-angle sliders 432, an L-shaped bracket 433, a cylinder 434, a pressure plate 435 and a rubber block 436; the movable plate 431 is arranged on the upper surface of the flip frame 422; the tops of the two vertical sections of the two U-shaped right-angle sliders 432 are respectively connected to the movable plate 431, and the horizontal sections of the two U-shaped right-angle sliders 432 are located below the flip frame 422, and bolts 437 are provided on the horizontal sections. The tightness of the bolts 437 is adjusted so that the two U-shaped right-angle sliders 432 can be moved or fixed along the outer edge of the flip frame 422. During assembly, first embed the two opposite sides of the flip frame 422 into the U-shaped grooves of the two U-shaped right-angle sliders 432 respectively, and then fix the lower surface of the movable plate 431 to the tops of the two vertical sections of the two U-shaped right-angle sliders 432 by welding. In this way, the bolts 437 can be adjusted so that the two U-shaped right-angle sliders 432 can be moved or fixed along the outer edge of the flip frame 422.

[0034] An L-shaped bracket 433 is mounted upside down on a movable plate 431. The top of the vertical section of the L-shaped bracket 433 is connected to the movable plate 431. A cylinder 434 is mounted on the horizontal section of the L-shaped bracket 433. The movable rod of the cylinder 434 passes through the horizontal section and is connected to a pressure plate 435. A rubber block 436 is mounted on the pressure plate. An arcuate groove 438 is formed on the lower surface of the rubber block 436.

[0035] When adjusting the position of the clamping mechanism 43 before welding, it is preferred to adjust the position of one of the clamping mechanisms 43, and fix the other clamping mechanism 43 as close to the side of the flip frame 422 as possible, so that the positions of the two workpieces are more flush and symmetrical. The specific adjustment of which clamping mechanism 43 to use depends on the actual situation. If the workpiece is plate-shaped and large in size, two clamping mechanisms 43 are required to cooperate in clamping and fixing. If the workpiece is small in size, only one clamping mechanism 43 can be used for clamping. The rubber block 436 under the pressure plate 435 presses on the workpiece, which can not only increase the friction force to ensure the firmness of the clamping, but also avoid crushing and damaging the workpiece. When clamping a tubular workpiece, only one clamping mechanism 43 is required. The arc groove 438 under the rubber block 436 can be pressed against the upper surface of the tubular workpiece, which has a better limit clamping effect.

[0036] In this embodiment, a first rib is provided at the angle between the horizontal section and the vertical section of the L-shaped bracket 433, and a second rib is provided at the angle between the outer side of the vertical section and the movable plate 431. The strength of the L-shaped bracket 433 is improved by providing the first rib and the second rib.

[0037] Furthermore, the driving device 3 includes a second motor 31, a screw rod 32, a fixing block 33, a first nut 34 and a second nut 35; the second motor 31 is arranged on the base 1, and the output shaft of the second motor 31 is connected to one end of the screw rod 32 through a coupling, and the other end of the screw rod 32 is fixed to the base 1 through the fixing block 33; the two ends of the screw rod 32 are respectively provided with positive threads and negative threads in opposite directions, the first nut 34 is screwed with the positive thread and fixed on one of the base plates 435, and the second nut 35 is screwed with the negative thread and fixed on the other base plate 436; when the second motor 31 drives the screw rod 32 to rotate, the first nut 34 and the second nut 35 move toward or away from each other along the screw rod 32.

[0038] In this article, the first motor 421 and the second motor 31 are both stepper motors, and an encoder is fixedly installed on the tail of the first motor 421 and the second motor 31 respectively, and the encoder output shaft is fixedly connected to the other end of the output shaft of the first motor 421 and the second motor 31. The first motor 421 and the second motor 31, the encoder and the brake 423 are respectively electrically connected to the controller 5. The encoder and the controller 5 can cooperate to accurately control the stroke, angle and other parameters of the first motor 421 and the second motor 31, so that the position of the workpiece when rotating the angle and approaching each other can be more accurate.

[0039] The working process of the welding fixture is described below with reference to the accompanying drawings. When welding a workpiece, the distance between the two clamping mechanisms 43 on the flip frame 422 can be adjusted according to the size of the workpiece, so that the workpiece is clamped between the two clamping mechanisms 43. When adjusting the position of the clamping mechanism 43, the bolt 437 can be loosened so that the movable plate 431 can slide on the flip frame 422 through the U-shaped right-angle slider 432. After the position of the movable plate 431 is determined, the bolt 437 can be tightened. After the position of the clamping mechanism 43 is determined, the cylinder 434 can be started. The movable rod 434 pushes the pressure plate 435 and the rubber block 436 to press against the surface of the workpiece. If the workpiece is a round tube, only one holding mechanism 43 is required. The tubular workpiece is placed on the movable plate 431 and the rubber block 436 presses against the workpiece. The arc groove 438 on the rubber block 436 can fit against the upper surface of the tubular workpiece to limit its position. If the workpiece is a plate, one clamping mechanism 43 or two clamping mechanisms 43 can be used in combination. After the workpieces are clamped, the two workpieces to be welded are symmetrically located on the upper parts of the two movable frames 41. The flipping mechanism 42 is configured to be rotatably mounted on the movable frame 41. According to the required welding angle of the workpiece, the first motor 421 is started to drive the flip frame 422 to rotate. At this time, the workpiece fixed to the flip frame 422 by the clamping mechanism 43 will also rotate. After the workpiece angle is determined, the two movable frames 41 are driven closer to each other by the second motor 31, thereby making the welding edges of the two workpieces with the determined welding angles closer to each other and in contact. When the driving mechanism is running, the second motor 31 needs to be started, and the output shaft of the second motor 31 drives the screw 324 to rotate, thereby driving the two movable frames 41 to move toward each other until the welding edges of the two workpieces clamped above touch together to complete the clamping and fixing of the workpieces. At this time, welding work can be carried out.

[0040] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

[0041] The above specific embodiments do not limit the scope of protection of this utility model. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model shall be included within the scope of protection of this utility model.

Claims

1. A welding fixture device, comprising a base and linear guide rails spaced apart on the base, characterized in that: It also includes a driving device and two docking devices arranged on the linear guide rail; the driving device is configured to drive the two docking devices to move toward or away from each other; The two docking devices each include a movable frame, a flipping mechanism and two clamping mechanisms; the movable frame includes a base plate and a first support plate and a second support plate arranged on both sides of the base plate, and the bottom surface of the base plate is connected to the slider of the linear guide rail; the flipping mechanism is constructed to be rotatably mounted on the first support plate and the second support plate, and can be driven to rotate; the two clamping mechanisms are movably arranged on the top surface of the flipping mechanism.

2. The welding fixture device according to claim 1, characterized in that: The flipping mechanism includes a first motor, a flip frame and a brake, and a first rotating shaft and a second rotating shaft are respectively provided on both sides of the flip frame connected to the first support plate and the second support plate; the fixed end of the first motor is fixed on one of the first support plate or the second support plate, and the brake is set on the other of the first support plate or the second support plate that is different from the fixed end; the output end of the first motor is connected to one of the first rotating shaft or the second rotating shaft to drive the flip frame to rotate; the other of the first rotating shaft or the second rotating shaft extends into the interior of the brake to lock the position of the flip frame.

3. The welding fixture device according to claim 2, characterized in that: The flip frame is a hollow rectangular frame.

4. The welding fixture device according to claim 3, characterized in that: The two clamping mechanisms each include a movable plate, two U-shaped right-angle sliders, an L-shaped bracket, a cylinder, a pressure plate and a rubber block; the movable plate is arranged on the upper surface of the flip frame; the tops of the two vertical sections of the two U-shaped right-angle sliders are respectively connected to the movable plate, the horizontal sections of the two U-shaped right-angle sliders are located below the flip frame, and bolts are provided on the horizontal sections. The tightness of the bolts is adjusted so that the two U-shaped right-angle sliders can be moved or fixed along the outer edge of the flip frame; the L-shaped bracket is arranged inverted on the movable plate, the top of the vertical section of the L-shaped bracket is connected to the movable plate, the cylinder is arranged on the horizontal section of the L-shaped bracket, the moving rod of the cylinder passes through the horizontal section and is connected to the pressure plate, and the rubber block is arranged on the pressure plate.

5. The welding fixture device according to claim 4, characterized in that: The lower surface of the rubber block is provided with an arc groove.

6. The welding fixture device according to claim 1, characterized in that The driving device includes a second motor, a screw rod, a fixed block, a first nut and a second nut; the second motor is arranged on the base, the output shaft of the second motor is connected to one end of the screw rod through a coupling, and the other end of the screw rod is fixed to the base through the fixed block; the two ends of the screw rod are respectively provided with positive threads and negative threads in opposite directions, the first nut is screwed with the positive threads and fixed to one of the base plates, and the second nut is screwed with the negative threads and fixed to the other base plate; when the second motor drives the screw rod to rotate, the first nut and the second nut move toward or away from each other along the screw rod.

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