CN210476010U

CN210476010U - Four-claw single-support expansion pressing welding fixture

Info

Publication number: CN210476010U
Application number: CN201921417775.3U
Authority: CN
Inventors: 蒋成; 高涛明; 曾超; 秦许鹏
Original assignee: Chengdu Yunao Intelligent Technology Co ltd
Current assignee: Chengdu Yunao Intelligent Technology Co ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-05-08
Anticipated expiration: 2029-08-29

Abstract

The utility model discloses a four-jaw single-support expansion pressing welding fixture, which comprises a four-jaw base, wherein a first rotating shaft is rotationally installed in the four-jaw base, a first gear is fixedly installed at the center position of the surface of the first rotating shaft, the top end of the first rotating shaft is in key connection with a second gear, an electric push rod is fixedly installed at the outer side of the four-jaw base, a first rack is fixedly connected with the output end of the electric push rod, the first rack is meshed with the first gear, a clamping table is fixedly installed above the four-jaw base, a second rotating shaft is arranged in the clamping table at the annular equidistance, the surface of the second rotating shaft is in key connection with a third gear and a fourth gear respectively, the second gear is meshed with the third gear, a moving block is slidably installed between two adjacent sets of second rotating shafts in the clamping table, and a second rack is fixedly installed at one side of the bottom of the moving block, and the top of the moving block is fixedly provided with a clamping jaw, so that the centering and the expanding stroke can be ensured to be longer.

Description

Four-claw single-support expansion pressing welding fixture

Technical Field

The utility model relates to a welding jig technical field specifically is a four-jaw list props tight welding jig that rises.

Background

Welding, also known as fusion, welding, is a manufacturing process and technique for joining metals or other thermoplastic materials, such as plastics, in a heated, high temperature or high pressure manner. The energy sources for modern welding are many, including gas flame, electric arc, laser, electron beam, friction, and ultrasonic, among others.

For the welding clamping of loop forming element, prior art is based on the inside centering of individual layer props and rises to fix a position work piece welding forming, and the shortcoming props the stroke that rises short (generally for the chuck), and the adaptation work piece kind is few, and has the work piece risk of dropping.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a four-claw single-support expansion compression welding fixture, which adopts the internal centering expansion of the lower layer, the cylinder push and the rack-and-pinion transmission, thereby ensuring the centering and the longer expansion stroke; the upper layer adopts an air cylinder to push a wedge-shaped pressing block to tightly press the workpiece, so that the workpiece is prevented from falling; the clamp is compact in structure, high in precision, adaptable to various workpiece types and free of changing the types, and solves the problems in the background technology.

In order to achieve the above object, the utility model provides a following technical scheme: a four-jaw single-support expanding and pressing welding fixture comprises a four-jaw base, wherein a first rotating shaft is rotatably mounted in the four-jaw base, a first gear is fixedly mounted at the center of the surface of the first rotating shaft, a second gear is in key connection with the top end of the first rotating shaft, an electric push rod is fixedly mounted on the outer side of the four-jaw base, a first rack is fixedly connected to the output shaft of the electric push rod, the first rack is meshed with the first gear, a clamping table is fixedly mounted above the four-jaw base, second rotating shafts are arranged in the clamping table in an annular equidistant mode, a third gear and a fourth gear are in key connection with the surface of the second rotating shaft respectively, the second gear is meshed with the third gear, moving blocks are slidably mounted between two adjacent groups of second rotating shafts in the clamping table, second racks are fixedly mounted on one side of the bottom of each moving block, and clamping jaws are fixedly mounted at the tops of the, the second rack is meshed with the fourth gear, a support is fixedly connected to the top of the clamping table, four groups of cylinders are arranged on an annular equidistant array on the top of the support, wedge blocks are fixedly mounted at output ends of the cylinders, and supporting plates are symmetrically arranged on the outer wall of the clamping table.

Preferably, the four-jaw base comprises a bottom plate, a top plate and a vertical plate welded between the bottom plate and the top plate, a linear guide rail is fixedly mounted on the upper surface of the bottom plate, the first rack is fixedly mounted at the top of the linear guide rail, and two ends of the first rotating shaft are rotatably mounted in the bottom plate and the clamping table through bearings respectively.

Preferably, the clamping table is of a cylindrical structure, through holes are formed in the clamping table at equal intervals in an annular mode, the second rotating shaft penetrates through the through holes, and notches are formed in the positions, meshed with the fourth gear, of the second rack on one side of the through holes.

Preferably, the clamping table is internally provided with sliding grooves at equal intervals in an annular manner, and the moving block is in clearance fit with the sliding grooves.

Preferably, the support comprises a cover plate and a coaming welded at the bottom of the top plate, and a notch is formed in the coaming corresponding to the moving position of the wedge block.

Preferably, the clamping table is symmetrically provided with fixed blocks on the outer wall, adjusting rods are screwed in the fixed blocks, and the adjusting rods are rotatably arranged in the supporting plate through bearings.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the centering and expanding in the lower layer are adopted, and an electric push rod pushes a rack to drive a gear to transmit, so that the centering and the expanding stroke are ensured to be longer;

2. the upper strata adopts the cylinder to impel wedge briquetting and compresses tightly the work piece, prevents to drop, and this anchor clamps compact structure, the precision is high, and adaptable multiple work piece kind need not the remodelling.

Drawings

Fig. 1 is a schematic view of a front perspective structure of the present invention;

FIG. 2 is a schematic top sectional view of the four-jaw base of the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic top sectional view of the clamping table of the present invention;

fig. 5 is a schematic view of the three-dimensional structure of the transmission structure of the present invention.

In the figure: 1. a four-jaw base; 101. a base plate; 102. a top plate; 103. a vertical plate; 2. a first rotating shaft; 3. a first gear; 4. a second gear; 5. an electric push rod; 6. a first rack; 7. a clamping table; 701. a through hole; 702. a chute; 8. a second rotating shaft; 9. a third gear; 10. a fourth gear; 11. a moving block; 12. a second rack; 13. a claw; 14. a support; 1401. a cover plate; 1402. enclosing plates; 15. a cylinder; 16. a wedge block; 17. a support plate; 18. a linear guide rail; 19. a notch; 20. a fixed block; 21. and adjusting the rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a four-claw single-support expansion compression welding fixture comprises a four-claw base 1, a first rotating shaft 2 is rotatably installed in the four-claw base 1, a first gear 3 is fixedly installed at the middle position of the surface of the first rotating shaft 2, a second gear 4 is connected to the top end of the first rotating shaft 2 in a key mode, an electric push rod 5 is fixedly installed on the outer side of the four-claw base 1, a first rack 6 is fixedly connected to the output shaft of the electric push rod 5, the first rack 6 is meshed with the first gear 3, a clamping table 7 is fixedly installed above the four-claw base 1, second rotating shafts 8 are arranged in the clamping table 7 in an annular equidistant mode, a third gear 9 and a fourth gear 10 are respectively connected to the surface of the second rotating shaft 8 in a key mode, the second gear 4 is meshed with the third gear 9, the electric push rod 5 is used for driving the first rack 6 to move, the first gear 3 is driven to rotate, the first rotating shaft 2 is used for transmitting power to the second gear 4, and then the third gear, thereby driving the four groups of claws 13 to open and retract and fixing the parts to be welded; a moving block 11 is slidably mounted between two adjacent groups of second rotating shafts 8 in the clamping table 7, a second rack 12 is fixedly mounted on one side of the bottom of the moving block 11, a clamping jaw 13 is fixedly mounted on the top of the moving block 11, and the moving block 11 is used for driving the clamping jaw 13 to perform four-jaw expansion positioning on the workpiece; the second rack 12 is meshed with the fourth gear 10, the top of the clamping table 7 is fixedly connected with a support 14, and the support 14 is arranged and used for fixing a cylinder 15; four groups of cylinders 15 are arranged on an annular equidistant array at the top of the support 14, wedge blocks 16 are fixedly arranged at the output ends of the cylinders 15, and the cylinders 15 are used for driving the wedge blocks 16 to stretch, so that the workpiece is conveniently compressed and prevented from slipping during processing; the outer wall of the clamping table 7 is symmetrically provided with supporting plates 17, and the supporting plates 17 are used for supporting the annular workpiece to be welded.

Specifically, four claw base 1 includes bottom plate 101, roof 102 and welds riser 103 between bottom plate 101 and roof 102, and fixed surface installs linear guide 18 on bottom plate 101, and first rack 6 fixed mounting is in linear guide 18 top, and 2 both ends of first pivot rotate through the bearing respectively install in bottom plate 101 and clamping table 7 in, set up linear guide 18, not only provide the support for first rack 6, and it is smooth and easy to slide.

Specifically, clamping platform 7 is the cylindrical structure setting, and clamping platform 7 inner ring shape equidistance has seted up through-hole 701, and second pivot 8 runs through in through-hole 701, and through-hole 701 one side lies in second rack 12 and fourth gear 10 engaged position and all sets up jagged 19, sets up through-hole 701, fixed second pivot 8.

Specifically, the clamping table 7 is internally provided with sliding grooves 702 at equal intervals in an annular manner, and the moving block 11 is in clearance fit with the sliding grooves 702 and provided with the sliding grooves 702, so that the stability of the sliding structure of the moving block 11 is improved.

Specifically, the support 14 includes a cover plate 1401 and a surrounding plate 1402 welded to the bottom of the top plate, and a notch 19 is also formed in the surrounding plate 1402 corresponding to the moving position of the wedge 16, and the notch 19 is provided to facilitate the extension and retraction of the wedge 16.

Specifically, the outer wall of the clamping table 7 is symmetrically provided with fixing blocks 20, adjusting rods 21 are screwed in the fixing blocks 20, the adjusting rods 21 are rotatably installed in the supporting plate 17 through bearings, and the fixing blocks 20 and the adjusting rods 21 are arranged to facilitate adjustment of the position of the supporting plate 17.

The working principle is as follows: the workpiece to be machined is placed on the upper surface of the supporting plate 17, the electric push rod 5 is started to drive the first rack 6 to move, so that the first gear 3 is driven to rotate, power is transmitted to the second gear 4 through the first rotating shaft 2, the second rack 12 is driven to move through the third gear 9 and the fourth gear 10, four groups of clamping jaws 13 are driven to be opened and retracted, a workpiece to be welded is fixed, the air cylinder 15 is started at last, the wedge blocks 16 are pushed out, and the workpiece is compressed.

When in use, the adjusting rod 21 can be rotated to be matched with the fixing block 20, the height of the supporting plate 17 is adjusted, the distance between the supporting plate 17 and the wedge block 16 is changed, and the adjustable supporting device is suitable for workpieces with different thicknesses.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a four claws list props and rises and compresses tightly welding jig, includes four claw bases (1), its characterized in that: a first rotating shaft (2) is rotatably mounted in the four-jaw base (1), a first gear (3) is fixedly mounted at a center position on the surface of the first rotating shaft (2), a second gear (4) is in keyed joint with the top end of the first rotating shaft (2), an electric push rod (5) is fixedly mounted at the outer side of the four-jaw base (1), a first rack (6) is fixedly connected with an output shaft of the electric push rod (5), the first rack (6) is meshed with the first gear (3), a clamping table (7) is fixedly mounted above the four-jaw base (1), second rotating shafts (8) are arranged in the clamping table (7) in an annular equidistant mode, a third gear (9) and a fourth gear (10) are respectively in keyed joint with the surface of the second rotating shaft (8), the second gear (4) is meshed with the third gear (9), and moving blocks (11) are slidably mounted between two adjacent groups of second rotating shafts (8) in the clamping table (7), the clamping device is characterized in that a second rack (12) is fixedly mounted on one side of the bottom of the moving block (11), a clamping jaw (13) is fixedly mounted on the top of the moving block (11), the second rack (12) is meshed with a fourth gear (10), a support (14) is fixedly connected to the top of the clamping table (7), four groups of cylinders (15) are arranged in an annular equidistant array on the top of the support (14), wedge blocks (16) are fixedly mounted on the output shaft ends of the cylinders (15), and supporting plates (17) are symmetrically arranged on the outer wall of the clamping table (7).

2. The four-jaw single-support tension-compression welding fixture as claimed in claim 1, wherein: the four-claw base (1) comprises a bottom plate (101), a top plate (102) and a vertical plate (103) welded between the bottom plate (101) and the top plate (102), wherein a linear guide rail (18) is fixedly mounted on the upper surface of the bottom plate (101), a first rack (6) is fixedly mounted at the top of the linear guide rail (18), and two ends of a first rotating shaft (2) are rotatably mounted in the bottom plate (101) and a clamping table (7) through bearings respectively.

3. The four-jaw single-support tension-compression welding fixture as claimed in claim 1, wherein: clamping platform (7) are the cylindrical structure setting, and annular equidistance has seted up through-hole (701) in clamping platform (7), second pivot (8) run through in through-hole (701), breach (19) have all been seted up to through-hole (701) one side position in second rack (12) and fourth gear (10) meshing position.

4. The four-jaw single-support tension-compression welding fixture as claimed in claim 1, wherein: the clamping table (7) is internally provided with sliding grooves (702) in an annular and equidistant mode, and the moving block (11) is in clearance fit with the sliding grooves (702).

5. The four-jaw single-support tension-compression welding fixture as claimed in claim 3, wherein: the support (14) comprises a cover plate (1401) and a surrounding plate (1402) welded to the bottom of the top plate, and a notch (19) is formed in the surrounding plate (1402) corresponding to the moving position of the wedge block (16).

6. The four-jaw single-support tension-compression welding clamp according to claim 5, characterized in that: the outer wall of the clamping table (7) is symmetrically provided with fixed blocks (20), adjusting rods (21) are screwed in the fixed blocks (20), and the adjusting rods (21) are rotatably arranged in the supporting plate (17) through bearings.