Welding positioning device for precision machining

Abstract

The invention belongs to the technical field of welding, and particularly relates to a welding positioning device for precision machining, which comprises a base, a first fixing plate is fixedly mounted at one end of the base, a second fixing plate is fixedly mounted at the other end of the base, a baffle is slidably mounted on the base, a first end limiting mechanism is arranged on the first fixing plate, and a second end limiting mechanism is arranged on the second fixing plate. A second end limiting mechanism is arranged on the side, close to the first fixing plate, of the baffle, and a pushing mechanism is arranged between the other side of the baffle and the second fixing plate. The first end limiting mechanism comprises a transverse plate block fixedly installed on the first fixing plate and two clamping plates installed on the transverse plate block in a sliding mode. According to the clamping device, when the welding part needs to be clamped and fixed, the air pump pumps air into the air cavity through the air pipe, in the air pumping process, all the chucks can make contact with the outer surface of the welding part in a self-adaptive mode, and the clamping and fixing effect on the welding part is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, and in particular relates to a welding positioning device for precision machining. Background Art

[0002] Welding is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. The relative position of the welded bodies in space is called a welded joint. The strength of the joint is not only affected by the quality of the weld, but also by its geometry, size, stress conditions and working conditions.

[0003] During machining, one end of the weldment is usually clamped and fixed by a three-jaw chuck, and then the other end of the weldment is pressed against it to achieve the fixing effect. This welding positioning structure can adapt to weldments with regular and standard shapes, but it is difficult to adapt to weldments with irregular shapes, and the staff needs to repeatedly adjust the position for fixing. Summary of the invention

[0004] Based on the background technology, there is a problem that the welding positioning structure can adapt to welded parts with regular and standard shapes, but is difficult to adapt to welded parts with irregular shapes, and workers are required to repeatedly adjust the position for fixing. The present invention proposes a welding positioning device for precision machining.

[0005] The present invention provides a welding positioning device for precision machining, comprising a base, a first fixing plate fixedly mounted on one end of the base, a second fixing plate fixedly mounted on the other end, a baffle slidably mounted on the base, a first end limiting mechanism disposed on the first fixing plate, a second end limiting mechanism disposed on a side of the baffle close to the first fixing plate, and a pushing mechanism disposed between the other side of the baffle and the second fixing plate;

[0006] The first end limiting mechanism includes a transverse plate fixedly mounted on the first fixed plate and two clamping plates slidably mounted on the transverse plate;

[0007] The second end limiting mechanism includes a plurality of chucks, a mounting block is provided on the baffle, one side of each chuck is fixedly connected to a fixed shaft, and the fixed shaft is inserted into the mounting block through a telescopic mechanism;

[0008] The pushing mechanism comprises a top shaft, one end of which is connected with a baffle plate, and the other end of which is connected with a second fixing plate.

[0009] Preferably, the telescopic mechanism includes a sleeve, a hollow air cavity is provided in the mounting block, a plurality of movable openings are opened around the air cavity, a plurality of sleeves are respectively and sealingly slidably inserted in the movable openings, the fixed shaft is sealably slidably inserted in the sleeve, and an air pipe is connected to the air cavity.

[0010] Preferably, a threaded shaft is rotatably installed in the transverse plate, a motor is fixedly installed at one end of the transverse plate, a driving end of the motor is fixedly connected to one end of the threaded shaft, a protrusion is provided on one side of the two clamping plates, and the threaded shaft threads through the protrusion.

[0011] Preferably, the thread directions of the left and right sections of the threaded shaft are opposite, and the two protrusions are respectively threaded through the left and right sections of the thread.

[0012] Preferably, both of the two splints are provided with sliding openings, which are respectively located at the upper and lower ends of the two splints, and springs are installed in the sliding openings. Cards are slidably installed on the sides of the two splints close to each other, and the two cards are arranged in a diagonal position. One end of the card is inserted in the sliding opening and connected to the spring.

[0013] Preferably, a slide groove is provided in the base, a slide shaft is fixedly installed in the slide groove, the lower end of the baffle is slidably inserted in the slide groove, and the slide shaft passes through the lower end of the baffle.

[0014] Preferably, a vertical plate is provided on the second fixed plate, and a first electric push cylinder is rotatably installed in the vertical plate. A connecting block is fixedly connected to the driving end of the first electric push cylinder. One end of the top shaft is rotatably connected to the surface of the second fixed plate, and the other end is slidably connected up and down along the surface of the baffle, and the connecting block slides along the top shaft.

[0015] Preferably, a slide rail is provided on the baffle plate, and a slider is rotatably connected to one end of the top shaft away from the second fixed plate. The slider slides on the slide rail, an opening is provided on the top shaft, and an insertion shaft is installed on the connecting block, and the insertion shaft passes through the opening.

[0016] Preferably, the lower end of the baffle is rotatably connected to a base plate on one side close to the first fixed plate, and movable mechanisms are provided on both sides of the baffle. The movable mechanism includes a second electric push cylinder, and the second electric push cylinder is rotatably installed on the side of the baffle through a rotating block. The driving end of the second electric push cylinder is rotatably connected to a movable block, and the movable block is rotatably connected to the side of the base plate.

[0017] Preferably, the chuck and the base plate are both provided with a plurality of grooves.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, when the weldment needs to be clamped and fixed, the air pump draws air into the air cavity through the air pipe. During the air pumping process, when the chuck contacts the edge of the weldment, it will stop moving due to the obstruction of the weldment, while the chucks at other positions that have not contacted the weldment will continue to move under the action of air pumping until they contact the edge of the weldment, so that each chuck can adaptively contact the outer surface of the weldment and achieve the clamping and fixing effect.

[0020] 2. In the present invention, the first end limiting mechanism can clamp and fix other welded parts, and can also clamp and fix the other end of the welded part fixed to the second end limiting mechanism. In order to ensure the stability of the clamping, one end of the clamp is connected to a card through a spring. The card can contact the edge position of the welded part. The staggered cards can apply force to the center position under the action of elastic force at the same time, thereby assisting in stabilizing the parts through the cards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a welding positioning device for precision machining proposed by the present invention;

[0022] Figure 2 This is a front structural schematic diagram of a welding positioning device for precision machining proposed by the present invention;

[0023] Figure 3 A schematic diagram of the side structure of a welding positioning device for precision machining proposed by the present invention;

[0024] Figure 4 is a structural schematic diagram of the second end limiting mechanism;

[0025] Figure 5 It is a front structural schematic diagram of the first end limiting mechanism;

[0026] Figure 6 This is a schematic side structural diagram of the first end limiting mechanism.

[0027] In the figure: 1 base, 2 first fixed plate, 3 baffle, 4 top shaft, 5 horizontal plate, 6 clamping plate, 7 threaded shaft, 8 card, 9 chuck, 10 second fixed plate, 11 vertical plate, 12 first electric push cylinder, 13 slider, 14 slide rail, 15 slide shaft, 16 bottom plate, 17 rotating block, 18 second electric push cylinder, 19 movable block, 20 mounting block, 21 air pipe, 22 sleeve, 23 air cavity, 24 connecting block, 25 plug shaft, 26 opening, 27 motor, 28 spring, 29 fixed shaft. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figure 1-Figure 6 A welding positioning device for precision machining includes a base 1, a first fixing plate 2 is fixedly mounted on one end of the base 1, a second fixing plate 10 is fixedly mounted on the other end, a baffle 3 is slidably mounted on the base 1, a first end limiting mechanism is arranged on the first fixing plate 2, a second end limiting mechanism is arranged on the side of the baffle 3 close to the first fixing plate 2, and a pushing mechanism is arranged between the other side of the baffle 3 and the second fixing plate 10;

[0030] The first end limiting mechanism includes a transverse plate 5 fixedly mounted on the first fixed plate 2 and two clamping plates 6 slidably mounted on the transverse plate 5; the second end limiting mechanism includes a plurality of chucks 9, a mounting block 20 is provided on the baffle 3, one side of each chuck 9 is fixedly connected to a fixed shaft 29, and the fixed shaft 29 is inserted into the mounting block 20 through a telescopic mechanism; the pushing mechanism includes a top shaft 4, one end of the top shaft 4 is connected to the baffle 3, and the other end is connected to the second fixed plate 10.

[0031] The telescopic mechanism includes a sleeve 22, a hollow air cavity 23 is provided in the mounting block 20, a plurality of movable openings are provided around the air cavity 23, a plurality of sleeves 22 are respectively inserted in the movable openings in a sealed and sliding manner, a fixed shaft 29 is inserted in the sleeve 22 in a sealed and sliding manner, and an air pipe 21 is connected to the air cavity 23. When the welded part needs to be clamped, the gas in the air cavity 23 is extracted through the connecting block 24, and during the process of exhausting, the fixed shaft 29 can be contracted into the sleeve 22, and the sleeve 22 can also be contracted into the air cavity 23, and during the process of contraction, each chuck 9 can be brought close to each other and gathered, so that the welded part can be fixed under the clamping action of each chuck 9, and when the clamping is performed, when the telescopic mechanism is contracted, the position of the chuck 9 can be adaptively adjusted by itself, and when the chuck 9 touches the edge of the welded part, it will adaptively stagnate, while the chucks 9 at other positions can still continue to move closer as the exhaust is carried out until they touch the edge of the welded part.

[0032] A threaded shaft 7 is rotatably installed in the transverse plate 5, and a motor 27 is fixedly installed at one end of the transverse plate 5. The driving end of the motor 27 is fixedly connected to one end of the threaded shaft 7. A protrusion is provided on one side of the two clamping plates 6, and the threaded shaft 7 is threaded through the protrusion. When the welded part is clamped and fixed, the motor 27 drives the threaded shaft 7 to rotate through the driving end. As the threaded shaft 7 rotates, the two clamping plates 6 can be driven to approach each other, thereby achieving the clamping effect of the welded part.

[0033] The left and right sections of the threaded shaft 7 have opposite thread directions, and the two protrusions respectively penetrate the left and right sections of the threaded shaft 7. The left and right sections of the threaded shaft 7 have opposite thread directions, so when the threaded shaft 7 rotates, the two clamping plates 6 can move toward each other, thereby achieving a clamping effect.

[0034] Both clamps 6 are provided with sliding openings, which are respectively located at the upper and lower ends of the two clamps 6. A spring 28 is installed in the sliding opening. A card 8 is slidably installed on the side where the two clamps 6 are close to each other. The two cards 8 are arranged in a diagonal position. One end of the card 8 is inserted in the sliding opening and connected to the spring 28. Under the elastic force of the spring 28, the card 8 is pulled so that the two cards 8 are close to each other, so that the card 8 reinforces and limits the welded parts clamped in the middle.

[0035] A slide groove is provided in the base 1, and a slide shaft 15 is fixedly installed in the slide groove. The lower end of the baffle 3 is slidably inserted in the slide groove, and the slide shaft 15 passes through the lower end of the baffle 3. The baffle 3 can slide left and right along the slide groove. The slide shaft 15 has a limiting and stabilizing effect on the movement of the baffle 3.

[0036] A vertical plate 11 is provided on the second fixed plate 10, and a first electric push cylinder 12 is rotatably installed in the vertical plate 11. A driving end of the first electric push cylinder 12 is fixedly connected with a connecting block 24. One end of the top shaft 4 is rotatably connected to the surface of the second fixed plate 10, and the other end is slidably connected along the surface of the baffle 3. The connecting block 24 slides along the top shaft 4, and the position of the baffle 3 on the base 1 can be changed by a pushing mechanism. The first electric push cylinder 12 pushes the connecting block 24 through the driving end, thereby pressing down or pulling up one end of the top shaft 4 connected to the baffle 3, thereby finally achieving the movement effect of the baffle 3.

[0037] A slide rail 14 is provided on the baffle 3, and a slider 13 is rotatably connected to one end of the top shaft 4 away from the second fixed plate 10. The slider 13 slides on the slide rail 14. An opening 26 is provided on the top shaft 4. An insertion shaft 25 is installed on the connecting block 24. The insertion shaft 25 passes through the opening 26. The connecting block 24 is slidably connected to the top shaft 4 through the insertion shaft 25. The insertion shaft 25 can slide back and forth in the opening 26. The top shaft 4 is on the slide rail 14 through the slider 13. When the slider 13 moves to the upper end position, the baffle 3 is closer to the second fixed plate 10, and can clamp and fix larger-sized welded parts. Conversely, it can clamp and fix smaller-sized welded parts.

[0038] The lower end of the baffle 3 is rotatably connected to the bottom plate 16 near the first fixed plate 2. Both sides of the baffle 3 are provided with movable mechanisms, which include a second electric push cylinder 18. The second electric push cylinder 18 is rotatably mounted on the side of the baffle 3 through a rotating block 17. The driving end of the second electric push cylinder 18 is rotatably connected to a movable block 19, and the movable block 19 is rotatably connected to the side of the bottom plate 16. The second electric push cylinder 18 can stretch the movable block 19 through the driving end, and the angle of the bottom plate 16 can be changed by changing the position of the movable block 19, and the bottom plate 16 supports the bottom of the weldment.

[0039] A plurality of grooves are provided on the chuck 9 and the bottom plate 16 , and the surfaces of the chuck 9 and the bottom plate 16 are set to have an uneven structure through the grooves, which is helpful for clamping and fixing the welded parts.

[0040] When it is necessary to clamp and fix the weldment, the shape of precision mechanical parts is often irregular. One end of the weldment is placed on the second end limiting mechanism, and the air pump draws air into the air cavity 23 through the air pipe 21. During the air pumping process, the sleeve 22 and the fixed shaft 29 can move inward, and finally drive the chuck 9 to move toward the center position. During the movement, when the chuck 9 contacts the edge position of the weldment, it will stop moving due to the obstruction of the weldment, while the chuck 9 at other positions that has not contacted the weldment will continue to move under the action of air pumping until it contacts the edge position of the weldment, so that each chuck 9 can adaptively contact the outer surface of the weldment and achieve the clamping and fixing effect on it. The second end limiting mechanism can clamp and fix parts with irregular outer surfaces.

[0041] A base plate 16 is provided below the second end limiting mechanism. The second electric push cylinder 18 pulls the movable block 19 through the driving end, and pulls the base plate 16 through the movable block 19 to change the angle of the base plate 16. The surface of the base plate 16 contacts and abuts against the bottom of the weldment to support and fix the bottom of the component.

[0042] The first electric push cylinder 12 in the pushing mechanism is extended and retracted through the driving end, pushing the connecting block 24 to slide back and forth on the top shaft 4, and pushing the top shaft 4 to change its angle through the connecting block 24. One end of the top shaft 4 is slidingly connected to the baffle 3. Changing the angle of the top shaft 4 can change the position of the baffle 3 on the base 1, thereby making the baffle 3 close to the first fixed plate 2.

[0043] The first end limiting mechanism can clamp and fix other welded parts, and can also clamp and fix the other end of the welded part fixed to the second end limiting mechanism. The motor 27 drives the threaded shaft 7 to rotate through the driving end. As the threaded shaft 7 rotates, the two clamps 6 approach or move away from each other, and the welded part placed therebetween can be clamped and fixed. In order to ensure the stability of the clamping, one end of the clamp 6 is connected to a card 8 through a spring 28. The card 8 can be in contact with the edge position of the welded part. The staggered cards 8 simultaneously apply a force to the center position under the action of elastic force, and the card 8 assists in stabilizing the parts.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A welding positioning device for precision machining, characterized in that: The invention comprises a base (1), a first fixing plate (2) being fixedly mounted on one end of the base (1), a second fixing plate (10) being fixedly mounted on the other end, a baffle (3) being slidably mounted on the base (1), a first end limiting mechanism being arranged on the first fixing plate (2), a second end limiting mechanism being arranged on a side of the baffle (3) close to the first fixing plate (2), and a pushing mechanism being arranged between the other side of the baffle (3) and the second fixing plate (10); The first end limiting mechanism comprises a transverse plate (5) fixedly mounted on the first fixed plate (2) and two clamping plates (6) slidably mounted on the transverse plate (5); The second end limiting mechanism comprises a plurality of chucks (9), a mounting block (20) is provided on the baffle (3), one side of each chuck (9) is fixedly connected to a fixed shaft (29), and the fixed shaft (29) is inserted into the mounting block (20) through a telescopic mechanism; The pushing mechanism comprises a top shaft (4), one end of which is connected to a baffle plate (3), and the other end of which is connected to a second fixing plate (10).

2. A welding positioning device for precision machining according to claim 1, characterized in that: The telescopic mechanism comprises a sleeve (22), a hollow air cavity (23) is arranged in the mounting block (20), a plurality of movable openings are opened around the air cavity (23), a plurality of sleeves (22) are respectively inserted and slidably sealed in the movable openings, the fixed shaft (29) is inserted and slidably sealed in the sleeve (22), and the air cavity (23) is connected to an air pipe (21).

3. A welding positioning device for precision machining according to claim 1, characterized in that: A threaded shaft (7) is rotatably mounted in the transverse plate (5), a motor (27) is fixedly mounted on one end of the transverse plate (5), a driving end of the motor (27) is fixedly connected to one end of the threaded shaft (7), and a convex block is provided on one side of the two clamping plates (6), and the threaded shaft (7) is threadedly passed through the convex block.

4. A welding positioning device for precision machining according to claim 3, characterized in that: The thread directions of the left and right sections of the threaded shaft (7) are opposite, and the two protrusions are threadedly penetrated through the left and right sections of the thread respectively.

5. A welding positioning device for precision machining according to claim 4, characterized in that: The two clamps (6) are each provided with a sliding opening, the two sliding openings are respectively located at the upper and lower ends of the two clamps (6), a spring (28) is installed in the sliding opening, a card (8) is slidably installed on the side of the two clamps (6) close to each other, the two cards (8) are arranged at a diagonal position, one end of the card (8) is inserted in the sliding opening and connected to the spring (28).

6. A welding positioning device for precision machining according to claim 1, characterized in that: A slide groove is provided in the base (1), a slide shaft (15) is fixedly installed in the slide groove, the lower end of the baffle (3) is slidably inserted in the slide groove, and the slide shaft (15) passes through the lower end of the baffle (3).

7. A welding positioning device for precision machining according to claim 1, characterized in that: A vertical plate (11) is provided on the second fixed plate (10), and a first electric push cylinder (12) is rotatably installed in the vertical plate (11), and a connecting block (24) is fixedly connected to the driving end of the first electric push cylinder (12), one end of the top shaft (4) is rotatably connected to the surface of the second fixed plate (10), and the other end is slidably connected up and down along the surface of the baffle (3), and the connecting block (24) slides along the top shaft (4).

8. The welding positioning device for precision machining according to claim 1, characterized in that: The baffle (3) is provided with a slide rail (14); one end of the top shaft (4) away from the second fixed plate (10) is rotatably connected to a slider (13); the slider (13) slides on the slide rail (14); an opening (26) is provided on the top shaft (4); an insertion shaft (25) is installed on the connecting block (24); and the insertion shaft (25) passes through the opening (26).

9. A welding positioning device for precision machining according to claim 1, characterized in that: The lower end of the baffle (3) is rotatably connected to a base plate (16) on one side close to the first fixed plate (2), and movable mechanisms are provided on both sides of the baffle (3). The movable mechanisms include a second electric push cylinder (18), and the second electric push cylinder (18) is rotatably mounted on the side of the baffle (3) through a rotating block (17). The driving end of the second electric push cylinder (18) is rotatably connected to a movable block (19), and the movable block (19) is rotatably connected to the side of the base plate (16).

10. A welding positioning device for precision machining according to claim 9, characterized in that: The chuck (9) and the bottom plate (16) are both provided with a plurality of grooves.

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