CN211614764U

CN211614764U - Clamping mechanism of welding tool

Info

Publication number: CN211614764U
Application number: CN202020168436.2U
Authority: CN
Inventors: 殷蔚曙; 殷少愚
Original assignee: Shanghai Senda Machinery Manufacturing Co ltd
Current assignee: Shanghai Senda Machinery Manufacturing Co ltd
Priority date: 2020-02-13
Filing date: 2020-02-13
Publication date: 2020-10-02
Anticipated expiration: 2030-02-13

Abstract

The utility model relates to the field of welding auxiliary equipment, in particular to a clamping mechanism of a welding tool, which comprises a welding bedplate, wherein the welding bedplate is fixedly connected with a first fixing component; the welding bedplate is connected with a second fixing component in a sliding way; the surface of the welding table board is provided with a U-shaped slotted hole which can be used for moving and fixing the second fixing component along the length direction; the welding platen is provided with a first cylinder for pushing the second fixing component to move in the U-shaped slotted hole. The utility model discloses welding operation labour saving and time saving's effect has. The problem that welding operation is time-consuming and labor-consuming is solved.

Description

Clamping mechanism of welding tool

Technical Field

The utility model belongs to the technical field of the welding auxiliary assembly and specifically relates to a clamping mechanism of welding frock is related to.

Background

Referring to fig. 1, a target workpiece 1 constitutes a part of a scaffold of a coil lock type, the target workpiece 1 includes a pipe 11 to be welded, and weldments 12 detachably attachable to the coil lock are welded to both ends of the pipe 11 to be welded. Referring to fig. 2 and 3, in the prior art, a to-be-welded pipe 11 is placed on two mutually spaced fixing frame bodies 13 for welding, each fixing frame body 13 comprises a base 14, a supporting rod 15 vertically and fixedly connected to the center of the base 14, a loading groove 16 provided on the upper surface of the supporting rod 15 for placing the to-be-welded pipe 11, and a limiting plate body 17 hinged to the upper surface of the supporting rod 15 for limiting the to-be-welded pipe 11 to move, and the limiting plate body 17 and the supporting rod 15 are fixed through bolts 18.

The above prior art solutions have the following drawbacks: the length of the pipe 11 to be welded is uncertain, the distance between the two fixing frame bodies 13 needs to be adjusted manually, the weldment 12 is sleeved at the two ends of the pipe 11 to be welded for positioning welding, welding operation is time-consuming and labor-consuming, and welding operation efficiency of the target machined part 1 is affected.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a clamping mechanism of welding frock, adopt mechanical assistance for welding operation labour saving and time saving.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a clamping mechanism of a welding tool comprises a welding bedplate, wherein the welding bedplate is fixedly connected with a first fixing component; the welding bedplate is connected with a second fixing component in a sliding way; the surface of the welding table board is provided with a U-shaped slotted hole which can be used for moving and fixing the second fixing component along the length direction; the welding platen is provided with a first cylinder for pushing the second fixing component to move in the U-shaped slotted hole.

By adopting the technical scheme, the first cylinder drives the second fixing component to move and fix in the U-shaped slotted hole according to the length of the pipe to be welded, so that the distance between the first fixing component and the second fixing component can be quickly adjusted to meet the welding requirement of the pipe to be welded; on the weldment was earlier by first fixed subassembly, treat the welded tube cover again and establish on the weldment, the welded tube position is the new weldment of level other pot head establishment, the fixed subassembly of first cylinder drive second for treat welded tube and weldment tight butt, prevent to treat welded tube and weldment emergence skew, treat welded tube and weldment and weld, for prior art, the utility model discloses a mechanical assistance welds for welding operation labour saving and time saving promotes welding efficiency.

The present invention may be further configured in a preferred embodiment as: the first fixing assembly comprises a support column vertically and fixedly connected to the welding bedplate, two circular rings fixedly connected to the support column and vertical to the central axis of the support column, a three-jaw chuck rotatably connected to the circular rings and used for clamping a weldment, a rotating shaft coaxially and fixedly connected to the surface of the three-jaw chuck, opposite to the surface of the clamping jaw, a driven gear fixedly connected to the circumferential direction of the rotating shaft, a servo motor fixedly connected to the welding bedplate and used for driving the three-jaw chuck to rotate, and a driving gear fixedly connected to the circumferential direction of an output shaft of the servo motor and meshed with the driven gear; the rings are spaced from each other to form an operating space for operating the three-jaw chuck.

By adopting the technical scheme, the welding part and the pipe to be welded can be driven to synchronously rotate so as to eliminate the welding dead angle between the welding part and the pipe to be welded, improve the overall welding efficiency and ensure the welding quality of a target workpiece.

The present invention may be further configured in a preferred embodiment as: and a bearing sleeved on the circumference of the three-jaw chuck is arranged in the circular ring.

Through adopting above-mentioned technical scheme, reduce the frictional force between three-jaw chuck and the ring, can make three-jaw chuck nimble rotate.

The present invention may be further configured in a preferred embodiment as: the ratio of the diameter of the driven gear to the diameter of the driving gear is 4:1 or 3: 1.

By adopting the technical scheme, the driving gear rotates for one circle, and the driven gear rotates for 90 degrees or 120 degrees, namely, the pipe to be welded and the weldment are controlled to synchronously rotate for 90 degrees or 120 degrees, so that the welding dead angle can be eliminated, and the welding quality is improved; meanwhile, the welding efficiency can be improved due to the elimination of the welding dead angle.

The present invention may be further configured in a preferred embodiment as: the second fixing component comprises a limiting support column and a second cylinder, the limiting support column is connected with the U-shaped slotted hole in a sliding mode, the second cylinder is fixedly connected to the limiting support column in the circumferential direction and used for clamping and fixing the pipe to be welded and the weldment, and the push rod of the second cylinder penetrates through the central axis, abutted against the weldment and the push rod of the second cylinder, and the central axis of the pipe to be welded coincides with the central axis of the pipe to be welded.

Through adopting above-mentioned technical scheme, the push rod butt of second cylinder is in the weldment for the weldment closely overlaps and locates and treat welded pipe both ends, guarantees that welded pipe and weldment can rotate in step.

The present invention may be further configured in a preferred embodiment as: the limiting support column is provided with a U-shaped groove along the vertical direction of the limiting support column, and a push rod of the second air cylinder can slide up and down; the limiting support columns are circumferentially and slidably connected with a positioning plate; the second cylinder is fixedly connected to the upper surface of the positioning plate; the limiting support column is circumferentially and fixedly connected with a fixing plate which is positioned right below the positioning plate; the connecting line of the center of the fixing plate and the center of the positioning plate is vertical; the fixed plate is in threaded connection with a positioning screw rod; the central axis of the positioning screw coincides with the connecting line of the center of the fixing plate and the center of the positioning plate; one end of the positioning screw rod can be abutted against the lower surface of the positioning plate, and the other end of the positioning screw rod is fixedly connected with a rotating wheel; the circumferential sleeve of the positioning screw is provided with a rubber sleeve which can be abutted against the lower surface of the positioning plate.

Through adopting above-mentioned technical scheme, the position of the push rod of timely regulation second cylinder for the axis of the push rod of second cylinder and the axis of waiting to weld the pipe coincide mutually, make the weldment with wait to weld mutual butt between the pipe, guarantee that welded pipe and weldment can rotate in step and weld, thereby eliminate the welding four corners, promote welding efficiency.

The present invention may be further configured in a preferred embodiment as: the top end of the limiting support column is hinged with a calibration piece; the linear distance from the bottom surface of the calibration piece to the central axis of the pipe to be welded is equal to the linear distance from the center of the welding piece to the bottom surface of the calibration piece.

By adopting the technical scheme, the welding piece is conveniently positioned, and the welding efficiency can be improved.

The present invention may be further configured in a preferred embodiment as: the limiting support columns are circumferentially and fixedly connected with limiting discs abutted against the welding bedplate; the surface of the welding table board is provided with two sliding chutes which are respectively positioned at two sides of the U-shaped slotted hole along the length of the welding table board; the lower surface of the limiting disc is fixedly connected with a limiting lug which can be embedded in the sliding groove to slide.

Through adopting above-mentioned technical scheme, prevent that spacing support column from rotating around self axial to guarantee the weldment and wait to weld the location accuracy nature of pipe, thereby guarantee welding efficiency and quality.

To sum up, the utility model discloses a following beneficial technological effect:

1. the bedplate, the first fixing component, the U-shaped slotted hole, the first cylinder and the second fixing component are welded; the utility model discloses a mechanical assistance welds for welding operation labour saving and time saving promotes welding efficiency.

2. Through a support column, a circular ring, a three-jaw chuck, a driven gear, a driving gear, a rotating shaft and a servo motor; the welding piece and the pipe to be welded can be driven to synchronously rotate so as to eliminate the welding dead angle between the welding piece and the pipe to be welded, improve the overall welding efficiency and ensure the welding quality of a target workpiece.

Drawings

FIG. 1 is a schematic view of a structure of a target workpiece;

FIG. 2 is a schematic diagram of a prior art configuration;

FIG. 3 is a schematic structural view of the fixing frame body;

fig. 4 is a schematic view of the overall structure of the present invention;

FIG. 5 is an enlarged view at A in FIG. 4;

FIG. 6 is an enlarged view at B in FIG. 4;

fig. 7 is a cross-sectional view taken at a-a in fig. 4.

In the figure, 1, a target workpiece; 11. a pipe to be welded; 12. welding parts; 13. a fixed frame body; 14. a base; 15 supporting the rod; 16. a loading slot; 17. a limiting plate body; 18. a bolt; 2. welding the bedplate; 21. a U-shaped slot; 3. a first fixed component; 31. a pillar; 32. a circular ring; 321. a bearing; 33. a three-jaw chuck; 34. a rotating shaft; 35. a driven gear; 36. a driving gear; 37. a servo motor; 38. an operating space; 4. a second fixed component; 41. limiting the supporting columns; 411. a U-shaped groove; 42. a second cylinder; 421. a positioning plate; 43. a fixing plate; 44. adjusting the position of the screw rod; 441. a rotating wheel; 442. a rubber sleeve; 443. a circular groove; 45. a limiting disc; 451. a chute; 452. a limiting bump; 5. a first cylinder; 51. mounting grooves; 52. a push groove; 53. a sealing plate; 6. and (4) calibrating the piece.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 4, the clamping mechanism of the welding tool disclosed by the present invention comprises a welding platen 2, wherein the welding platen 2 is fixedly connected with a first fixing component 3; the welding bedplate 2 is connected with a second fixing component 4 in a sliding way; the surface of the welding bedplate 2 is provided with a U-shaped slotted hole 21 along the length direction for the second fixing component 4 to move and fix; the welding platen 2 is provided with a first cylinder 5 for pushing the second fixed assembly 4 to move in the U-shaped slot 21.

Referring to fig. 4, the welding platen 2 is provided with an installation groove 51 for the first cylinder 5 to be installed; a pushing groove 52 for the push rod of the first air cylinder 5 to move is arranged between the mounting groove 51 and the U-shaped slotted hole 21; the mounting groove 51 is in threaded connection with a sealing plate 53, the sealing plate 53 can play a role in protecting the first air cylinder 5, and the service life of the second air cylinder 5 is prolonged.

Referring to fig. 5, the first fixing assembly 3 includes a pillar 31 vertically and fixedly connected to the welding platen 2, and two rings 32 having central axes perpendicular to the central axes of the pillar 31 are welded to the upper end surface of the pillar 31; the ring 32 is rotatably connected with a three-jaw chuck 33 for clamping the weldment 12; the three-jaw chuck 33 is coaxially and fixedly connected with a rotating shaft 34 opposite to the surface of the clamping jaw; the rotating shaft 34 is fixedly connected with a driven gear 35 in the circumferential direction; the welding platen 2 is fixedly connected with a servo motor 37 for driving the three-jaw chuck 33 to rotate; a driving gear 36 engaged with the driven gear 35 is fixedly connected to an output shaft of the servo motor 37 in a circumferential direction. The ring 32 is internally provided with a bearing 321 sleeved on the circumference of the three-jaw chuck 33, so that the friction force between the three-jaw chuck 33 and the ring 32 is reduced, and the three-jaw chuck 33 can flexibly rotate. The rings 32 are spaced apart to define an operative space 38 for manipulating the three-jaw chuck 33 to facilitate gripping of the weldment 12 by the three-jaw chuck 33. The ratio of the diameter of the driven gear 35 to the diameter of the driving gear 36 is 3:1, the driving gear 36 rotates for one circle, the driven gear 35 rotates for 120 degrees, namely, the pipe to be welded 11 and the weldment 12 are controlled to synchronously rotate for 120 degrees, the welding dead angle is eliminated, and the welding quality is improved; meanwhile, the welding efficiency can be improved due to the elimination of the welding dead angle.

Referring to fig. 6, the second fixing assembly 4 includes a limiting support column 41 slidably connected to the U-shaped slot 21, and a second cylinder 42 for clamping the pipe 11 to be welded and the weldment 12 is fixedly connected to the limiting support column 41 in the circumferential direction; the push rod of the second cylinder 42 penetrates through the limiting support column 41 and abuts against the weldment 12, and the central axis of the push rod of the second cylinder 42 coincides with the central axis of the pipe to be welded 11. The push rod of the second cylinder 42 abuts against the weldment 12, so that the weldment 12 is tightly sleeved at two ends of the pipe to be welded 11, and the pipe to be welded 11 and the weldment 12 can synchronously rotate.

Referring to fig. 6, with reference to fig. 7, the limiting support column 41 is provided with a U-shaped groove 411 along its vertical direction for the push rod of the second cylinder 42 to slide up and down; the limiting support column 41 is circumferentially and slidably connected with a positioning plate 421; the second cylinder 42 is fixedly connected to the upper surface of the positioning plate 421; the limiting support column 41 is fixedly connected with a fixing plate 43 which is positioned right below the positioning plate 421 in the circumferential direction; the connecting line of the center of the fixing plate 43 and the center of the positioning plate 421 is vertical; the fixed plate 43 is in threaded connection with a positioning screw 44; the central axis of the positioning screw 44 coincides with the central connecting line of the fixing plate 43 and the positioning plate 421, so that the position of the push rod of the second cylinder 42 can be adjusted in time, the central axis of the push rod of the second cylinder 42 coincides with the central axis of the pipe to be welded 11, the pipe to be welded 11 and the weldment 12 can be welded by rotating synchronously, four corners of welding are eliminated, and the welding efficiency is improved. One end of the positioning screw 44 can abut against the lower surface of the positioning plate 421 and the other end is fixedly connected with a rotating wheel 441; a rubber sleeve 442 which can be abutted against the lower surface of the positioning plate 421 is circumferentially sleeved on the positioning screw 44; the lower surface of the positioning plate 421 is provided with a circular groove 443 whose central axis coincides with the central axis of the positioning screw. The positioning screw 44 is embedded in the circular groove 443, the bottom surface of the rubber sleeve 442 abuts against the circular groove 443, the circumferential direction of the rubber sleeve 442 abuts against the side wall of the circular groove 443, and the position of the push rod of the second cylinder 42 can be adjusted by rotating the rotating wheel 441, so that the central axis of the push rod of the second cylinder 42 coincides with the central axis of the pipe 11 to be welded. The top end of the limiting support column 41 is hinged with a calibration part 6; the straight line distance from the bottom surface of the calibrating piece 6 to the central axis of the to-be-welded pipe 11 is equal to the straight line distance from the circle center of the welding piece 12 to the bottom surface of the calibrating piece 6, the welding piece 12 is conveniently positioned, and the welding efficiency can be improved.

Referring to fig. 6 and fig. 7, the limiting supporting column 41 is circumferentially and fixedly connected with a limiting disc 45 abutted against the welding platen 2; the surface of the welding bedplate 2 is provided with two sliding grooves 451 which are respectively positioned at two sides of the U-shaped slotted hole 21 along the length of the welding bedplate; the lower surface of the limiting disc 45 is fixedly connected with a limiting bump 452 which can be embedded in the sliding groove 451 to slide, so that the limiting support column 41 can be prevented from rotating around the self axial direction, the positioning accuracy of the weldment 12 and the pipe to be welded 11 is ensured, and the welding efficiency and quality are ensured.

The utility model discloses a demonstration operation: 1. the first air cylinder 5 can be opened according to the length of the pipe to be welded 11, the second fixing component 4 is driven to move and fix in the U-shaped slotted hole 21, the distance between the support column 31 and the limiting support column 41 is close to the length of the pipe to be welded 12, and the distance between the support column 31 and the limiting support column 41 is 5-10cm greater than the length of the pipe to be welded 11, so that the welded part 12 and the pipe to be welded 11 can be conveniently clamped;

2. the three-jaw chuck 33 clamps the weldment 12, the to-be-welded pipe 11 is sleeved on the weldment 12, the to-be-welded pipe 11 is horizontally sleeved with a new weldment 12, the new weldment 12 is tightly attached to the limiting support column 41 and the calibration part 6 for positioning, the central axis of the push rod of the second air cylinder 42 is ensured to be coincident with the central axis of the to-be-welded pipe 11, the second air cylinder 42 is started, the push rod of the second air cylinder 42 is abutted to the weldment 12, so that the to-be-welded pipe 11 is tightly abutted to the weldment 12, and the to-be-welded pipe 12 and the weldment 11 can synchronously rotate;

3. the servo motor 37 is started, the welding pipe 11 and the weldment 12 are controlled to rotate synchronously, the joint of the pipe 12 to be welded and the weldment 11 is welded, the welding dead angle between the welding pipe 11 and the weldment 12 can be eliminated, and meanwhile, mechanical assistance is adopted for welding, so that the welding operation is time-saving and labor-saving, and the welding efficiency is improved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a clamping mechanism of welding frock which characterized in that: the welding table comprises a welding table plate (2), wherein the welding table plate (2) is fixedly connected with a first fixing component (3); the welding bedplate (2) is connected with a second fixing component (4) in a sliding way; the surface of the welding bedplate (2) is provided with a U-shaped slotted hole (21) along the length direction for the second fixing component (4) to move and fix; the welding bedplate (2) is provided with a first cylinder (5) for pushing the second fixing component (4) to move in the U-shaped slotted hole (21).

2. The clamping mechanism of the welding tool of claim 1, wherein: the first fixing assembly (3) comprises a support column (31) vertically and fixedly connected to the welding bedplate (2), two circular rings (32) fixedly connected to the support column (31) and vertical to the central axis of the support column (31), a three-jaw chuck (33) rotatably connected to the circular rings (32) and used for clamping a weldment (12), a rotating shaft (34) coaxially and fixedly connected to the surface of the three-jaw chuck (33) opposite to a clamping jaw, a driven gear (35) fixedly connected to the circumferential direction of the rotating shaft (34), a servo motor (37) fixedly connected to the welding bedplate (2) and used for driving the three-jaw chuck (33) to rotate, and a driving gear (36) fixedly connected to the circumferential direction of an output shaft of the servo motor (37) and meshed with the driven gear (35); the rings (32) are spaced apart from each other to form an operating space (38) in which the three-jaw chuck (33) can be operated.

3. The clamping mechanism of the welding tool of claim 2, wherein: and a bearing (321) sleeved on the circumference of the three-jaw chuck (33) is arranged in the circular ring (32).

4. The clamping mechanism of the welding tool of claim 3, wherein: the ratio of the diameter of the driven gear (35) to the diameter of the driving gear (36) is 4:1 or 3: 1.

5. The clamping mechanism of the welding tool of claim 4, wherein: the second fixing component (4) comprises a limiting support column (41) which is slidably connected with the U-shaped slotted hole (21) and a second cylinder (42) which is fixedly connected with the limiting support column (41) in the circumferential direction and used for clamping and fixing the pipe to be welded (11) and the weldment (12), and a push rod of the second cylinder (42) penetrates through the central axis of the limiting support column (41) which is abutted to the weldment (12) and the push rod of the second cylinder (42) and the central axis of the pipe to be welded (11) to coincide.

6. The clamping mechanism of the welding tool of claim 5, wherein: the limiting support column (41) is provided with a U-shaped groove (411) along the vertical direction of the limiting support column, and a push rod of the second air cylinder (42) can slide up and down; the limiting support column (41) is circumferentially and slidably connected with a positioning plate (421); the second air cylinder (42) is fixedly connected to the upper surface of the positioning plate (421); the limiting support column (41) is circumferentially and fixedly connected with a fixing plate (43) which is positioned right below the positioning plate (421); the connecting line of the center of the fixing plate (43) and the center of the positioning plate (421) is vertical; the fixed plate (43) is in threaded connection with a positioning screw (44); the central axis of the positioning screw rod (44) coincides with the connecting line of the center of the fixing plate (43) and the center of the positioning plate (421); one end of the positioning screw rod (44) can be abutted against the lower surface of the positioning plate (421), and the other end is fixedly connected with a rotating wheel (441); the circumferential sleeve of the positioning screw rod (44) is provided with a rubber sleeve (442) which can be abutted against the lower surface of the positioning plate (421).

7. The clamping mechanism of the welding tool of claim 6, wherein: the top end of the limiting support column (41) is hinged with a calibration piece (6); the linear distance from the bottom surface of the calibration piece (6) to the central axis of the pipe (11) to be welded is equal to the linear distance from the circle center of the welding piece (12) to the bottom surface of the calibration piece (6).

8. The clamping mechanism of the welding tool of claim 6, wherein: the limiting support columns (41) are circumferentially and fixedly connected with limiting discs (45) abutted against the welding bedplate (2); two sliding grooves (451) which are respectively positioned at two sides of the U-shaped slotted hole (21) are arranged on the surface of the welding bedplate (2) along the length of the welding bedplate; the lower surface of the limiting disc (45) is fixedly connected with a limiting lug (452) which can be embedded in the sliding groove (451) to slide.