Flexible welding fixture

Abstract

The utility model provides a flexible welding fixture, and relates to the field of welding tools. The left side and the right side of the upper end face of the base are each fixedly provided with a vertical supporting plate, and a supporting part is installed on the portion, between the two vertical supporting plates, of the upper end face of the base. An overturning assembly is arranged on the upper portion between the two vertical supporting plates. Through the arrangement of the overturning assembly, after a structure on a workpiece is welded, the overturning assembly drives the clamping device and the workpiece to conduct overturning motion, and due to the fact that a clamp does not need to be loosened and the workpiece does not need to be manually overturned by 180 degrees, the welding positioning process is time-saving, labor-saving and more efficient; the problems that in the using process of an existing flexible welding clamp, after a structure on a clamped workpiece is welded, the clamp needs to be loosened, then the workpiece is turned over by 180 degrees manually, and then the workpiece is clamped and fixed through the clamp, so that the welding and positioning process is time-consuming, labor-consuming and not efficient enough are solved.

Description

Technical Field

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

[0002] With the continuous advancement of science and technology and the increasing demand for industrial automation, more and more welding production lines are beginning to use welding robots instead of manual welding; welding robots usually use welding fixtures in the process of welding workpieces. Welding fixtures are a set of flexible welding fixing, clamping and positioning fixtures, which are mainly used for welding various weldable materials, large, medium and small materials; the flexibility of flexible welding fixtures does not refer to their toughness. On the contrary, its material hardness is extremely high, its impact resistance is particularly strong and it is very durable. Simply put, its flexibility here refers to its versatility and variability.

[0003] Although the current flexible welding fixture is universal and versatile, when using the current flexible welding fixture, after the structure on the clamped workpiece is welded, the fixture needs to be loosened, and then the workpiece is manually flipped 180 degrees, and then the workpiece is clamped and fixed by the fixture, and finally the other side of the workpiece is welded, which makes the welding positioning process time-consuming and labor-intensive, and not efficient enough. In addition, the current flexible welding fixture often uses a threaded structure for driving when clamping and fixing the workpiece, and the threaded structure is easily loosened due to force, thereby reducing the firmness of the welding fixture. Utility Model Content

[0004] The disclosed embodiment relates to a flexible welding fixture, which, through the setting of a flipping component, can flip the clamping device and the workpiece without loosening the clamp and manually flipping the workpiece 180 degrees, thereby saving time and effort in the welding positioning process and making it more efficient; through the cooperation of the locking gear and the anti-loosening mechanism, the clamping screw is effectively prevented from being easily loosened by force, thereby improving the firmness of the welding fixture.

[0005] The utility model provides a flexible welding fixture, which specifically includes: a base; a vertical support plate is fixedly installed on both sides of the upper end surface of the base, and a supporting component is installed on the upper end surface of the base between the two vertical support plates; a flip assembly is provided on the upper part between the two vertical support plates, and a clamping device is installed on the flip assembly; an anti-loosening mechanism is provided on the rear side of the flip assembly; and a controller is installed on the front part of one of the vertical support plates on the left.

[0006] In at least some embodiments, the supporting component includes an electric cylinder, a lifting support plate, a square sliding column, a square sliding cylinder, a strip opening and a limit column. The electric cylinder is installed in the middle of the upper end surface of the base, and the upper end of the telescopic rod of the electric cylinder is fixedly connected to the lifting support plate; a square sliding column is fixedly connected to the four corners of the bottom end surface of the lifting support plate, and each square sliding column is slidably connected to the outside of a square sliding cylinder, and the square sliding cylinder is fixedly connected to the upper end surface of the base; a strip opening is opened on one side surface of each of the square sliding cylinders, and a limit column is provided on the lower part of one side surface of each square sliding column, and the limit column passes through the strip opening.

[0007] In at least some embodiments, the flipping assembly includes a flipping frame, a supporting shaft, an adjusting motor, a worm and a worm wheel. A supporting shaft is fixedly connected to the middle of the left and right end surfaces of the flipping frame, and the two supporting shafts are on the same axis. The two supporting shafts are rotatably connected to two vertical support plates respectively, and a worm wheel is fixedly installed on the left end of the left supporting shaft; the adjusting motor is installed on the left end surface of a vertical support plate on the left, and a worm meshing with the worm wheel is fixedly installed on the shaft of the adjusting motor; and strip slide grooves are provided on the left and right side surfaces inside the flipping frame.

[0008] In at least some embodiments, the helix angle of the worm is smaller than the friction angle of the worm gear.

[0009] In at least some embodiments, the clamping device includes a clamping plate, a clamping screw, a sprocket and a locking gear. The number of the clamping plates is two, and a guide slider is provided at the left and right ends of each clamping plate, and the guide slider is slidably connected to the strip slide groove opened inside the flip frame; the number of the clamping screws is two, and the two clamping screws are rotatably connected to the left and right sides of the flip frame, and the outside of each clamping screw is symmetrically provided with two reverse threads, and the clamping screw is threadedly connected to the two clamping plates through the two reverse threads; a sprocket is fixedly installed at the front end of each clamping screw, and the two sprockets are connected by chain transmission, a rotating handwheel is provided at the rear end of the right clamping screw, and a locking gear is fixedly installed on the rear side of the outside of the right clamping screw.

[0010] In at least some embodiments, the anti-loosening mechanism includes a rectangular slide, a rectangular slider, a tightening tooth block, a pulling rod, a rotating handle and a limit plate. The rectangular slide is fixedly installed on the right side of the rear end surface of the flip frame, and a rectangular slider is slidably connected inside the rectangular slide. Two tightening tooth blocks are provided at the head end of the rectangular slider, and a pulling rod passing through the tail of the rectangular slide is provided at the tail end of the rectangular slider, and the rear end of the pulling rod is rotatably connected to the rotating handle; the outside of the pulling rod is provided with a spring sleeved inside the rectangular slide; the tail end of the rectangular slide is fixedly connected to the limit plate, and a limiting notch is provided at the tail of the limit plate.

[0011] In at least some embodiments, when the anti-loosening mechanism is in the anti-loosening state, the two pressing tooth blocks are in close contact with the outer peripheral surface of the locking gear.

[0012] The utility model provides a flexible welding fixture, which has the following beneficial effects:

[0013] 1. Through the setting of the flip assembly, when the structure on the workpiece is welded, the controller will start the adjusting motor, and the adjusting motor will drive the worm, worm wheel, a supporting shaft on the left and the flip frame to rotate. The flip frame will turn the clamping device and the workpiece. Since there is no need to loosen the clamp, there is no need to manually flip the workpiece 180 degrees, which makes the welding positioning process time-saving and labor-saving, and more efficient.

[0014] 2. Through the cooperation of the locking gear and the anti-loosening mechanism, after clamping the workpiece, the rotating handle stuck in the limiting notch at the rear of the limiting plate is taken out, so that the two tightening teeth are in close contact with the outer circumference of the locking gear, so that the locking gear and the clamping screw on the right side are effectively locked and limited, effectively avoiding the situation where the clamping screw is easily loosened due to force, thereby improving the firmness of the welding fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0016] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached picture:

[0018] Figure 1 A schematic diagram showing the structure of the first perspective of the present application is shown;

[0019] Figure 2 A schematic diagram showing the structure of the second viewing angle of the present application is shown;

[0020] Figure 3 A schematic diagram of the structure of the present application in a split state is shown;

[0021] Figure 4 A schematic structural diagram of the support component of the present application is shown;

[0022] Figure 5 A schematic diagram showing the structure of the flip assembly and the clamping device of the present application is shown;

[0023] Figure 6 A schematic diagram of the structure of the flip frame, the clamping screw and the locking gear of the present application is shown;

[0024] Figure 7A schematic diagram of the structure of the locking gear and the anti-loosening mechanism of the present application after being disassembled is shown.

[0025] Reference numerals list

[0026] 1. Base; 101. Vertical support plate; 102. Controller;

[0027] 2. Support components; 201. Electric cylinder; 202. Lifting support plate; 203. Square slide column; 204. Square slide cylinder; 205. Strip opening; 206. Limiting column;

[0028] 3. Flip assembly; 301. Flip frame; 302. Support shaft; 303. Adjustment motor; 304. Worm; 305. Worm wheel;

[0029] 4. Clamping device; 401. Clamping plate; 402. Clamping screw; 403. Sprocket; 404. Locking gear;

[0030] 5. Anti-loosening mechanism; 501. Rectangular slide cylinder; 502. Rectangular slider; 503. Tightening gear block; 504. Pull rod; 505. Rotating handle; 506. Limiting plate. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of 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.

[0032] Example 1: Please refer to Figures 1 to 7 :

[0033] The utility model proposes a flexible welding fixture, comprising: a base 1; a vertical support plate 101 is fixedly installed on both sides of the upper end surface of the base 1, and a support component 2 is installed on the upper end surface of the base 1 between the two vertical support plates 101; a flip component 3 is provided on the upper part between the two vertical support plates 101, and a clamping device 4 is installed on the flip component 3; an anti-loosening mechanism 5 is provided on the rear side of the flip component 3; a controller 102 is installed on the front part of a vertical support plate 101 on the left side, which is used to control the operation of the flip component 3 and the support component 2.

[0034] The supporting component 2 includes an electric cylinder 201, a lifting support plate 202, a square sliding column 203, a square slide 204, a strip opening 205 and a limiting column 206. The electric cylinder 201 is installed in the middle of the upper end surface of the base 1, and the upper end of the telescopic rod of the electric cylinder 201 is fixedly connected to the lifting support plate 202; a square sliding column 203 is fixedly connected to the four corners of the bottom end surface of the lifting support plate 202, and a square slide 204 is slidably connected to the outside of each square sliding column 203, and the square slide 204 is fixedly connected to the upper end surface of the base 1; a strip opening 205 is opened on one side of each square slide 204, and a limiting column 206 is provided at the lower part of one side of each square sliding column 203, and the limiting column 206 passes through the strip opening 205; through the setting of the supporting component 2, the workpiece can be auxiliary supported before the workpiece is clamped.

[0035] The flip assembly 3 includes a flip frame 301, a supporting shaft 302, an adjusting motor 303, a worm 304 and a worm gear 305. A supporting shaft 302 is fixedly connected to the middle of the left and right end surfaces of the flip frame 301, and the two supporting shafts 302 are on the same axis. The two supporting shafts 302 are rotatably connected to the two vertical support plates 101 respectively, and a worm gear 305 is fixedly installed on the left end of the left supporting shaft 302; the adjusting motor 303 is installed on the left end surface of a vertical support plate 101 on the left, and a worm 304 meshing with the worm gear 305 is fixedly installed on the shaft of the adjusting motor 303; strip grooves are provided on the left and right side surfaces of the flip frame 301; the unfolded helix angle of the worm 304 is smaller than the friction angle of contact with the worm gear 305; the adjusting motor 303 and the electric cylinder 201 are electrically connected to the controller 102; through the setting of the flip assembly 3, the clamping device 4 and the workpiece can be flipped.

[0036] The clamping device 4 includes a clamping plate 401, a clamping screw 402, a sprocket 403 and a locking gear 404. There are two clamping plates 401, and each clamping plate 401 is provided with a guide slider at both ends, and the guide slider is slidably connected to the strip slide groove opened inside the flip frame 301; there are two clamping screws 402, and the two clamping screws 402 are rotatably connected to the left and right sides of the flip frame 301. The outside of each clamping screw 402 is symmetrically provided with two reverse threads in a front-to-back shape, and the clamping screw 402 is threadedly connected to the two clamping plates 401 through the two reverse threads; a sprocket 403 is fixedly installed at the front end of each clamping screw 402, and the two sprockets 403 are connected by chain transmission, a rotating handwheel is provided at the rear end of a clamping screw 402 on the right side, and a locking gear 404 is fixedly installed on the rear side of the outside of a clamping screw 402 on the right side; the clamping device 4 is used to clamp the workpiece.

[0037] Embodiment 2, based on embodiment 1, as Figure 2 and Figure 7As shown, the anti-loosening mechanism 5 includes a rectangular slide 501, a rectangular slider 502, a tightening tooth block 503, a pulling rod 504, a rotating handle 505 and a limiting plate 506. The rectangular slide 501 is fixedly installed on the right side of the rear end surface of the flip frame 301, and the rectangular slide 502 is slidably connected inside the rectangular slide 501. The head end of the rectangular slide 502 is provided with two tightening tooth blocks 503, and the tail end of the rectangular slide 502 is provided with a pulling rod 504 that passes through the tail of the rectangular slide 501. The pulling rod 504 The tail end is rotatably connected with a rotating handle 505; the outside of the pulling rod 504 is located inside the rectangular slide 501 and a spring is provided; the tail end of the rectangular slide 501 is fixedly connected to a limiting plate 506, and a limiting notch is provided at the tail of the limiting plate 506; when the anti-loosening mechanism 5 is in an anti-loosening state, the two tightening tooth blocks 503 are in close contact with the outer peripheral surface of the locking gear 404; through the cooperation between the locking gear 404 and the anti-loosening mechanism 5, the situation in which the clamping screw 402 is easily loosened due to force is effectively avoided.

[0038] The working principle of this embodiment is as follows: when in use, the workpiece to be welded is first placed on the middle of the upper end surface of the lifting support plate 202, and then the telescopic rod of the electric cylinder 201 is controlled by the controller 102 to extend upward, thereby moving the lifting support plate 202 and the workpiece to be welded upward. When the workpiece to be welded is pushed upward to the middle side of the inside of the flip frame 301, the staff pulls the rotating handle 505 toward the rear end and clamps the rotating handle 505 in the limiting notch opened at the rear of the limiting plate 506, so that the rotating handle 505 is limited, and When the handle 505 is turned and moved toward the tail end, the rectangular slider 502 and the clamping tooth block 503 are moved toward the tail end, so that the two clamping tooth blocks 503 are separated from the outer peripheral surface of the locking gear 404; then, by manually rotating the clamping screw 402 on the right side, the other clamping screw 402 is synchronously rotated under the transmission action of the two sprocket wheels 403 and the chain, and then the two clamping plates 401 are simultaneously moved in relative directions under the action of two reverse threads on the outside of the clamping screw 402, so as to clamp and fix the workpiece to be welded;

[0039] After clamping, the rotating handle 505 stuck in the limiting notch at the tail of the limiting plate 506 is taken out, and then the rectangular slider 502 moves toward the head end with the two clamping tooth blocks 503 under the action of the external spring force of the pulling rod 504, so that the two clamping tooth blocks 503 are in close contact with the outer peripheral surface of the locking gear 404, so that the locking gear 404 and the clamping screw 402 on the right side are effectively locked and limited; then the telescopic rod of the electric cylinder 201 is controlled to retract downward, thereby moving the lifting support plate 202 downward, and then the welding robot is used to weld the structure above the workpiece.

[0040] After the structure on the workpiece is welded, the controller 102 is used to start the adjusting motor 303, which drives the worm 304, the worm wheel 305, a supporting shaft 302 on the left and the flip frame 301 to rotate. The flip frame 301 drives the clamping device 4 and the workpiece to flip. After the workpiece is flipped 180 degrees, the adjusting motor 303 is turned off, and the welding robot is used to weld the structure on the other side of the workpiece. During the flipping process of the workpiece, there is no need to loosen the clamp and there is no need to manually flip the workpiece 180 degrees.

[0041] In this article, there are a few points to note:

[0042] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0043] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0044] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A flexible welding fixture, comprising: A base (1); a vertical support plate (101) is fixedly installed on both sides of the upper end surface of the base (1), and a support component (2) is installed on the upper end surface of the base (1) between the two vertical support plates (101); it is characterized in that a flip assembly (3) is provided at the upper part between the two vertical support plates (101), and a clamping device (4) is installed on the flip assembly (3); an anti-loosening mechanism (5) is provided on the rear side of the flip assembly (3); a controller (102) is installed on the front part of one of the vertical support plates (101) on the left.

2. A flexible welding fixture according to claim 1, characterized in that: The support component (2) comprises an electric cylinder (201), a lifting support plate (202), a square sliding column (203), a square sliding cylinder (204), a strip opening (205) and a limiting column (206); the electric cylinder (201) is mounted on the middle part of the upper end surface of the base (1), and the upper end of the telescopic rod of the electric cylinder (201) is fixedly connected to the lifting support plate (202); a square sliding column (203) is fixedly connected to the four corners of the bottom end surface of the lifting support plate (202), and the outside of each square sliding column (203) is slidably connected to a square sliding cylinder (204) fixed to the upper end surface of the base (1); a strip opening (205) is opened on one side surface of each square sliding cylinder (204), and a limiting column (206) is provided on the lower part of one side surface of each square sliding column (203), and the limiting column (206) passes through the strip opening (205).

3. The flexible welding fixture according to claim 1, characterized in that: The flip assembly (3) comprises a flip frame (301), a support shaft (302), an adjustment motor (303), a worm (304) and a worm wheel (305); a support shaft (302) is fixedly connected to the middle of both left and right end surfaces of the flip frame (301), and the two support shafts (302) are on the same axis; the two support shafts (302) are rotatably connected to two vertical support plates (101) respectively, and a worm wheel (305) is fixedly installed on the left end of the left support shaft (302); the adjustment motor (303) is installed on the left end surface of a left vertical support plate (101), and a worm (304) meshing with the worm wheel (305) is fixedly installed on the shaft of the adjustment motor (303); and strip-shaped sliding grooves are provided on both left and right side surfaces inside the flip frame (301).

4. A flexible welding fixture according to claim 3, characterized in that: The developed helix angle of the worm (304) is smaller than the friction angle of contact with the worm wheel (305).

5. The flexible welding fixture according to claim 1, characterized in that: The clamping device (4) comprises a clamping plate (401), a clamping screw (402), a sprocket (403) and a locking gear (404); the number of the clamping plates (401) is two, and each clamping plate (401) is provided with a guide slider at both ends, and the guide slider is slidably connected to a strip-shaped slide groove provided inside the flip frame (301); the number of the clamping screws (402) is two, and the two clamping screws (402) are rotatably connected to the left and right sides of the flip frame (301), and each The outside of the clamping screw (402) is symmetrically provided with two reverse threads, and the clamping screw (402) is threadedly connected to the two clamping plates (401) through the two reverse threads; a sprocket (403) is fixedly installed at the front end of each clamping screw (402), and the two sprockets (403) are connected by a chain transmission, a rotating hand wheel is provided at the rear end of the right clamping screw (402), and a locking gear (404) is fixedly installed on the rear side of the outside of the right clamping screw (402).

6. The flexible welding fixture according to claim 1, characterized in that: The anti-loosening mechanism (5) comprises a rectangular slide (501), a rectangular slider (502), a tightening tooth block (503), a pulling rod (504), a rotating handle (505) and a limiting plate (506). The rectangular slide (501) is fixedly mounted on the right side of the rear end surface of the flip frame (301), and the rectangular slide (501) is slidably connected with the rectangular slide (502) inside. The head end of the rectangular slide (502) is provided with two tightening tooth blocks (503), and the tail end of the rectangular slide (502) is provided with a pulling rod (504) penetrating the tail of the rectangular slide (501), and the tail end of the pulling rod (504) is rotatably connected with the rotating handle (505); the outside of the pulling rod (504) is located inside the rectangular slide (501) and is sleeved with a spring; the tail end of the rectangular slide (501) is fixedly connected with the limiting plate (506), and the tail of the limiting plate (506) is provided with a limiting notch.

7. The flexible welding fixture according to claim 6, characterized in that: When the anti-loosening mechanism (5) is in the anti-loosening state, the two pressing tooth blocks (503) are in close contact with the outer peripheral surface of the locking gear (404).

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