A welding fixture for automobile elbow pipe
By designing the positioning and clamping structure of the automotive bent pipe welding fixture, the problem of low manual welding accuracy of bent pipes is solved, high-precision welding and efficient production are achieved, the defective rate is reduced, and the ability to adapt to bend pipes of different sizes is improved. Productivity.
Patent Information
- Application Number
- CN201911022284.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-10-25
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2039-10-25
AI Technical Summary
Due to irregular shapes of automobile bends, manual direct welding results in low accuracy and increased defective rate.
A kind of welded fixing fixture for automotive bend pipe is designed, including positioning structure, clamping structure and pressing mobile structure. Through the positioning pins, positioning pressure plates, clamping cylinders, slide rails and slides, the accuracy of the bend pipe is achieved. Positioning and fixing to improve welding accuracy.
The welding accuracy of automotive pipe bent parts is improved, the defective rate is reduced, and the production efficiency is improved. By quickly replacing the clamping seat pad to adapt to bend pipes of different sizes, the production process is simplified and production efficiency is improved.
Smart Images
Figure CN110605519B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of automobile parts production, in particular to an automobile bent pipe welding and fixing fixture. Background Art
[0002] Due to the irregular shape of automobile elbows, they need to be welded directly by humans. However, direct welding will result in low precision and a high defective rate. Summary of the invention
[0003] In order to solve the technical problem that the existing automobile elbows are directly welded by manual labor, resulting in low precision and increased defective rate, the present invention provides an automobile elbow welding fixture.
[0004] The technical solution of the present invention is as follows:
[0005] A fixing fixture for welding an automobile bent pipe comprises a mounting plate, on which a positioning structure, a clamping structure and a clamping moving structure are sequentially arranged, the positioning structure comprises a positioning pin, which is connected to a positioning pin cylinder below the positioning pin, a positioning pressure plate is arranged above the positioning pin, the positioning pressure plate is connected to the positioning pressure plate cylinder, the clamping structure comprises a pressure head, which is connected to the clamping cylinder below the pressure head, a clamping seat is arranged below the pressure head, the clamping moving structure comprises a positioning seat, the positioning seat is movably connected to a slide rail below the positioning seat, the positioning seat is connected to the moving cylinder, a positioning block is arranged in the positioning seat, the positioning block is connected to the positioning block cylinders above and below the positioning block cylinders, and the positioning pin cylinder, the positioning pressure plate cylinder, the clamping cylinder, the moving cylinder and the positioning block cylinder are connected to a control system.
[0006] A lifting structure is arranged between the clamping seats, and the lifting structure comprises a lifting plate. A lifting cylinder connected to the lifting plate is arranged below the lifting plate, and the lifting cylinder is connected to the mounting plate.
[0007] The lifting plate is cross-shaped, with left and right ends contacting the upper automobile curved pipe, and inner and outer ends respectively connected to the lifting cylinder and telescopic rod below. The lifting cylinder and telescopic rod are installed on the lifting bracket, and the lifting bracket is installed on the mounting plate.
[0008] The lower part of the positioning pin is connected to the moving rod in the positioning pin cylinder, the outer sleeve of the positioning pin is provided with a guide sleeve, the guide sleeve is installed on the positioning lower bracket, the positioning pressure plate is connected to the pulling plate above it, the lower part of the pulling plate is connected to the moving rod and the telescopic rod in the positioning pressure plate cylinder, the positioning pressure plate cylinder and the telescopic rod are installed on the positioning upper bracket, and the positioning upper bracket, the positioning lower bracket and the positioning pin cylinder are installed on the mounting plate.
[0009] The positioning pin is inserted into the positioning hole of the automobile bent pipe component to be welded, and the positioning pressing plate is pressed on the upper part of the positioning hole of the automobile bent pipe component to be welded.
[0010] The rear of the pressure head is connected with a connecting block, the front of the connecting block is movably connected to a moving block, the other end of the moving block is movably connected to one end of the clamping cylinder, the rear of the connecting block is movably connected to a supporting block, the supporting block is connected to a moving rod in the clamping cylinder, and the clamping cylinder is connected to a mounting plate.
[0011] The number of the clamping structures is 3 sets, and the 3 sets of clamping structures are distributed in the middle of the automobile bend pipe.
[0012] The clamping seat has an upper opening, and cushion blocks are arranged at the lower part and the left and right sides of the opening.
[0013] The positioning seat is C-shaped, and two positioning block cylinders are installed at the upper and lower ends of the positioning seat. The positioning block is located in the C-shaped opening. The moving rod in the positioning block cylinder is movably connected to the upper and lower ends of the positioning block. The middle part of the positioning block is open, and a sliding seat connected to the positioning seat is provided below the positioning seat. A sliding block is provided at the lower end of the sliding seat. The sliding block is movably connected to the sliding rail, and the sliding seat is connected to the moving rod in the moving cylinder. The sliding rail and the moving cylinder are installed on the mounting plate.
[0014] A limiting block is provided on one side of the slide rail.
[0015] The technical solution of the present invention has a novel structure and ingenious design. The positioning structure, clamping structure and clamping moving structure are firmly fixed with high fixing accuracy. The slide rail and the slider are used in combination, and the displacement is smooth and accurate. The welding accuracy of components of automobile elbows can be improved, product quality can be improved, the defective rate can be reduced, and production efficiency can be improved. The pads in the clamping seat can be quickly replaced to quickly adapt to automobile elbows of different sizes for production. The three sets of clamping structures are arranged according to the shape of the automobile elbow, which is convenient for workers to quickly place the automobile elbow, and it is not easy to put it in the wrong direction, so that production is fast and production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the present invention;
[0017] Figure 2 It is a partial structural schematic diagram of the positioning structure of the present invention;
[0018] Figure 3 It is a partial structural schematic diagram of the positioning structure of the present invention;
[0019] Figure 4 It is a side structural schematic diagram of the clamping structure of the present invention;
[0020] Figure 5 It is a structural schematic diagram of the compaction moving structure of the present invention;
[0021] Figure 6 It is a structural schematic diagram of the jacking structure of the present invention. DETAILED DESCRIPTION
[0022] The present invention will be further described below in conjunction with the accompanying drawings.
[0023] like Figures 1 to 6 The automobile bent pipe welding fixing fixture shown in the figure includes a mounting plate 1, on which a positioning structure, a clamping structure, a lifting structure and a pressing and moving structure are sequentially arranged, the positioning structure is arranged at one end of the mounting plate 1, the positioning structure includes a positioning pin 2, a positioning pin cylinder 3 is arranged below the positioning pin 2, the positioning pin 2 is connected to the moving rod in the positioning pin cylinder 3, a guide sleeve 18 is arranged on the outer sleeve of the positioning pin 2, the guide sleeve 18 can limit the range of movement of the positioning pin 2, limit its displacement in the lateral direction, limit it to displacement only in the longitudinal direction, and increase the stability of the positioning pin 2 when it moves, the guide sleeve 18 is installed at the upper end of the positioning lower bracket 19, a positioning pressure plate 4 is arranged above the positioning pin 2, a positioning pressure plate cylinder 5 is arranged below the positioning pressure plate 4, the positioning pressure plate 4 is connected to the pulling plate 20 above it, and the lower part of the pulling plate 20 is connected to the positioning pressure plate cylinder 5 is connected with the telescopic rod 16, and the number of telescopic rods 16 here is 2, which are installed on both sides of the moving rod of the positioning plate cylinder 5. The telescopic rod sleeve 28 is arranged outside the telescopic rod 16, and the telescopic rod 16 moves smoothly in the telescopic rod sleeve 28, so that the up and down displacement of the telescopic rod 16 is smoother. The positioning plate cylinder 5 and the telescopic rod sleeve 28 are installed on the upper end of the positioning upper bracket 21. The positioning upper bracket 21, the positioning lower bracket 19 and the positioning pin cylinder 3 are installed on the mounting plate 1 by bolts. The positioning pin cylinder 3 moves to drive the positioning pin 2 to move upward, and the positioning pin 2 is inserted into the positioning hole of the automobile bend to be welded to fix it. The positioning plate cylinder 5 moves to drive the positioning plate 4 to move downward, and the positioning plate 4 is pressed on the upper part of the positioning hole of the automobile bend to be welded. The automobile bend to be welded is fixed, which is convenient for subsequent welding. The positioning structure is firmly fixed and has high fixing accuracy, which can improve the welding accuracy of automobile bend parts, improve product quality, reduce defective rate, and improve production efficiency.
[0024] There are three sets of clamping structures, which are distributed in the middle part of the automobile bend. The clamping structure includes a pressure head 6, a clamping cylinder 7 is provided below the pressure head 6, a connecting block 22 is connected to the rear of the pressure head 6, and the front of the connecting block 22 is movably connected to the moving block 23 using a rotating shaft. The other end of the moving block 23 is movably connected to the front end of the clamping cylinder 7 mounting frame using a rotating shaft, and the rear of the connecting block 22 is movably connected to the supporting block 24 using a rotating shaft. The lower end of the supporting block 24 is connected to the moving rod in the clamping cylinder 7, and the clamping cylinder 7 is installed on the clamping seat 8 through the mounting frame. A clamping seat 8 is provided below the pressure head 6, and the upper part of the clamping seat 8 is opened for accommodating the middle part of the automobile bend. Pads 25 are provided at the bottom and on the left and right sides of the opening for buffering, and can be quickly replaced to quickly adapt to automobile bends of different sizes for production. The clamping cylinder 7 is actuated to drive the support block 24 to move upward, and push the pressure head 6 to rotate downward with the rotating shaft connecting the connecting block 22 and the moving block 23 and the rotating shaft connecting the moving block 23 and the mounting frame as the center, so as to clamp the automobile elbow placed in the clamping seat 8, which is convenient for welding operations. The clamping structure is firmly fixed and has high fixing accuracy, which can improve the welding accuracy of automobile elbow components, improve product quality, reduce the defective rate, and improve production efficiency; the three sets of clamping structures are arranged according to the shape of the automobile elbow, which is convenient for workers to quickly place the automobile elbow, and it is not easy to put it in the wrong direction, which can quickly produce and improve production efficiency.
[0025] A lifting structure is provided between the clamping seats 8, and the lifting structure includes a lifting plate 14. A lifting cylinder 15 connected to the lifting plate 14 is provided below the lifting plate 14. The lifting plate 14 is in a cross shape, wherein the left and right ends are in contact with the automobile curved pipe above, and the inner and outer ends are respectively connected with the moving rod and the telescopic rod 16 in the lifting cylinder 15 below. A telescopic rod sleeve 28 is provided outside the telescopic rod 16. The telescopic rod 16 moves smoothly in the telescopic rod sleeve 28, so that the up and down displacement of the telescopic rod 16 is smoother. The lifting cylinder 15 and the telescopic rod sleeve 28 are installed at the upper end of the lifting bracket 17, and the lifting bracket 17 is installed on the mounting plate 1. The lifting cylinder 15 is actuated to drive the lifting plate 14 to move upward, and the automobile curved pipe on which the welding process is completed is pushed upward to facilitate the workers to take it.
[0026] The clamping and moving structure includes a positioning seat 9, which is C-shaped. A positioning block 10 is provided in the positioning seat 9. The positioning block 10 is located in the C-shaped opening. The positioning block 10 is movably connected to the positioning block cylinders 13 above and below it. Two positioning block cylinders 13 are installed at the upper and lower ends of the positioning seat 9. The moving rod in the positioning block cylinder 13 is movably connected to the upper and lower ends of the positioning block 10 to limit the displacement of the positioning block 10 in the positioning seat 9. The middle part of the positioning block 10 is opened to accommodate parts that need to be welded for automobile bends. A slide seat 26 connected to the positioning seat 9 is provided below the positioning seat 9. Two parallel sliders 29 are provided at the lower end of the slide seat 26. Two parallel slide rails 11 are provided below the positioning seat 9. The sliders 29 are movably connected to the slide rails 11 and used in combination to smoothly move the parts that need to be welded for automobile bends fixed in the positioning block 10. The slide seat A moving cylinder 12 is provided on one side of 26, and the slide 26 is connected to the moving rod in the moving cylinder 12 through a connecting rod. The slide rail 11 and the moving cylinder 12 are installed on the mounting plate 1. A limit block 27 is provided on one side of the slide rail 11, which is used as a limit when the moving cylinder 12 drives the slide 26 to move. The bolt on the adjustable limit block 27 can adjust the limit position. The worker inserts the parts of the automobile bend to be welded into the middle opening of the positioning block 10, and the two positioning block cylinders 13 are actuated to fix the parts of the automobile bend to be welded and the positioning block 10. The moving cylinder 12 is actuated to drive the slide 26 and the positioning block 10 thereon and the parts of the automobile bend to be welded to move toward other parts of the automobile bend fixed in the clamping structure. The displacement of the slide 26 stops after contacting the limit block 27, and the various parts of the automobile bend arrive at the predetermined position before welding, waiting for welding. The clamping and moving structure is firmly fixed with high fixing accuracy, and the slide rail 11 and the slider 29 are used in combination, and the displacement is smooth and accurate, which can improve the welding accuracy of automobile elbow parts, improve product quality, reduce defective rate, and improve production efficiency.
[0027] The positioning pin cylinder 3, positioning pressure plate cylinder 5, clamping cylinder 7, lifting cylinder 15, moving cylinder 12 and positioning block cylinder 13 are connected to a control system, the control system includes a PLC, the PLC includes an input end and an output end, the input end is connected to a switch and a sensor, the output end is connected to the positioning pin cylinder 3, positioning pressure plate cylinder 5, clamping cylinder 7, lifting cylinder 15, moving cylinder 12 and positioning block cylinder 13, each sensor monitors the operating status of each cylinder and collaboratively completes the production process.
[0028] When in use, the automobile elbow to be welded is manually placed on the three sets of clamping structures, the automobile elbow contacts the cushion block 25 in the clamping seat 8, the clamping cylinder 7 is actuated, driving the support block 24 to move upward, pushing the pressure head 6 to rotate downward with the rotating shaft connecting the connecting block 22 and the moving block 23 and the rotating shaft connecting the moving block 23 and the mounting frame as the center, clamping the automobile elbow placed in the clamping seat 8, placing the other two parts to be welded on the positioning pin 2 and in the positioning block 10, the positioning pin cylinder 3 is actuated, and the pressure head 6 is driven to move upward. The movable positioning pin 2 moves upward, and the positioning pin 2 is inserted into the positioning hole of the automobile bend to be welded to fix it. The positioning pressure plate cylinder 5 moves, driving the positioning pressure plate 4 to move downward, and the positioning pressure plate 4 presses on the upper part of the positioning hole of the automobile bend to be welded, and fixes the automobile bend to be welded. The two positioning block cylinders 13 move to fix the automobile bend to be welded parts and the positioning block 10. The moving cylinder 12 moves to drive the slide 26 and the positioning block 10 thereon and the automobile bend to be welded The components of the automobile bend that need to be welded are displaced toward another component of the automobile bend fixed in the clamping structure, and the displacement of the slide 26 stops after contacting the limit block 27. The various parts of the automobile bend reach the predetermined position before welding and start welding. After the welding is completed, the clamping cylinder 7 is reset, driving the support block 24 to move downward, and pulling the pressure head 6 to rotate upward with the rotating shaft connected to the connecting block 22 and the moving block 23 and the rotating shaft connected to the mounting frame as the center of the circle, the automobile bend is loosened, and the positioning pin cylinder 3 is reset, driving the positioning pin 2 to move downward , the positioning pin 2 is pulled out from the positioning hole of the part to be welded of the automobile elbow, the positioning pressure plate cylinder 5 is reset, driving the positioning pressure plate 4 to move upward, the positioning pressure plate 4 releases the automobile elbow, the two positioning block cylinders 13 are reset, and the parts of the automobile elbow to be welded in the positioning block 10 are released, the moving cylinder 12 is actuated, driving the slide 26 and the positioning block 10 thereon to move outward, the lifting cylinder 15 is actuated, driving the lifting plate 14 to move upward, and the automobile elbow on which the welding process is completed is pushed out upward, making it convenient for workers to take it.
[0029] It should be understood that the above description is only a preferred embodiment of the present invention and is not sufficient to limit the technical solution of the present invention. For ordinary technicians in this field, within the spirit and principles of the present invention, additions, substitutions, changes or improvements can be made according to the above description, and all these additions, substitutions, changes or improved technical solutions should fall within the scope of protection of the claims attached to the present invention.
Claims
1. A welding fixture for an automobile bent pipe, comprising a mounting plate (1), characterized in that: The mounting plate (1) is provided with a positioning structure, a clamping structure and a pressing and moving structure in sequence, wherein the positioning structure comprises a positioning pin (2), the positioning pin (2) being connected to a positioning pin cylinder (3) below the positioning pin (2), a positioning pressure plate (4) being provided above the positioning pin (2), the positioning pressure plate (4) being connected to a positioning pressure plate cylinder (5), the clamping structure comprises a pressure head (6), the pressure head (6) being connected to a clamping cylinder (7) below the positioning pin (6), a clamping seat (8) being provided below the pressure head (6), the pressing and moving structure comprising a positioning seat (9), the positioning seat (9) being movably connected to a slide rail (11) below the positioning seat (9), the positioning seat (9) being connected to a moving cylinder (12), a positioning block (10) being provided inside the positioning seat (9), the positioning block (10) being connected to the positioning block air cylinders above and below the positioning block air cylinders (12), and the positioning block (10) being connected to the positioning block air cylinders above and below the positioning block air cylinders (12). The positioning pin cylinder (3), the positioning plate cylinder (5), the clamping cylinder (7), the moving cylinder (12) and the positioning block cylinder (13) are connected to a control system. A lifting structure is provided between the clamping seats (8). The lifting structure comprises a lifting plate (14). A lifting cylinder (15) connected to the lifting plate (14) is provided below the lifting plate (14). The lifting cylinder (15) is connected to the mounting plate (1). The lifting plate (14) is in a cross shape, wherein the left and right ends are in contact with the automobile curved pipe above, and the inner and outer ends are respectively connected to the lifting cylinder (15) and the telescopic rod (16) below. The lifting cylinder (15) and the telescopic rod (16) are installed on a lifting bracket (17). The lifting bracket (17) is installed on the mounting plate (1). The lower part of the positioning pin (2) is connected to the moving rod in the positioning pin cylinder (3); the outer sleeve of the positioning pin (2) is provided with a guide sleeve (18); the guide sleeve (18) is mounted on the positioning lower bracket (19); the positioning pressure plate (4) is connected to the pull plate (20) above it; the lower part of the pull plate (20) is connected to the moving rod and the telescopic rod (16) in the positioning pressure plate cylinder (5); the positioning pressure plate cylinder (5) and the telescopic rod (16) are mounted on the positioning upper bracket (21); the positioning upper bracket (21), the positioning lower bracket (19) and the positioning pin cylinder (3) are mounted on the mounting plate (1); the rear part of the pressure head (6) is connected to a connecting block (22); the front part of the connecting block (22) is movably connected to a moving block (23); the other end of the moving block (23) is connected to the clamping cylinder (7) one end is movably connected, the rear of the connecting block (22) is movably connected to the supporting block (24), the supporting block (24) is connected to the moving rod in the clamping cylinder (7), the clamping cylinder (7) is connected to the mounting plate (1), the positioning seat (9) is C-shaped, two positioning block cylinders (13) are installed at the upper and lower ends of the positioning seat (9), the positioning block (10) is located in the C-shaped opening, the moving rod in the positioning block cylinder (13) is movably connected to the upper and lower ends of the positioning block (10), the middle of the positioning block (10) is opened, a sliding seat (26) connected to the positioning seat (9) is provided below, a slider (29) is provided at the lower end of the slider (26), the slider (29) is movably connected to the slide rail (11), and the slider (26) is connected to the moving rod in the moving cylinder (12),The slide rail (11) and the moving cylinder (12) are mounted on the mounting plate (1).
2. The automobile elbow welding fixture according to claim 1 is characterized in that: The positioning pin (2) is inserted into the positioning hole of the automobile bend pipe component to be welded, and the positioning pressing plate (4) is pressed on the upper part of the positioning hole of the automobile bend pipe component to be welded.
3. The automobile elbow welding fixture according to claim 1 is characterized in that: The number of the clamping structures is 3 sets, and the 3 sets of clamping structures are distributed in the middle of the automobile bend pipe.
4. The automobile elbow welding fixture according to claim 1, characterized in that: The clamping seat (8) has an upper opening, and cushion blocks (25) are provided at the lower part and on the left and right sides of the opening.
5. The automobile elbow welding fixture according to claim 1, characterized in that: A limit block (27) is provided on one side of the slide rail (11).