CN220636587U

CN220636587U - Fixed spot welder

Info

Publication number: CN220636587U
Application number: CN202322283645.8U
Authority: CN
Inventors: 郭文涛; 吴明; 周润林
Original assignee: Yichang Zoer Automotive Technology Co ltd
Current assignee: Yichang Zoer Automotive Technology Co ltd
Priority date: 2023-08-23
Filing date: 2023-08-23
Publication date: 2024-03-22
Anticipated expiration: 2033-08-23

Abstract

The utility model provides a fixed spot welder, comprising: the top of the frame is fixedly provided with a pneumatic cylinder, the telescopic end of the pneumatic cylinder penetrates into the frame in the vertical direction and then is connected with an upper electrode, and the frame is provided with a lower electrode in a matched manner; the mounting plate is fixedly connected with the rack, the mounting plate is provided with connecting seats, connecting plates are fixedly arranged at two opposite ends of each connecting seat, and each connecting plate is provided with a plurality of through holes; the clamping pieces are provided with a plurality of groups and are connected with the through holes in a one-to-one correspondence manner, and the plurality of groups of clamping pieces are combined to carry out multi-point clamping and fixing on the tubular workpiece; the driving mechanism is provided with two groups and is respectively connected with clamping pieces at different sides. The utility model can solve the problems that the tubular workpiece with the height adjusted cannot be well stabilized and the device has certain defects in the prior art.

Description

Fixed spot welder

Technical Field

The utility model relates to the field of spot welders, in particular to a fixed spot welder.

Background

The spot welder is a mechanical device, and adopts the principle of double-sided double-point overcurrent welding, when in work, two electrodes press the workpiece to enable two layers of metal to form a certain contact resistance under the pressure of the two electrodes, when welding current flows from one electrode to the other electrode, instant heat welding is formed at the two contact resistance points, and the welding current instantly flows from the other electrode to the electrode along the two workpieces to form a loop, so that the internal structure of the welded workpiece is not damaged. However, the conventional spot welder is inconvenient to weld tubular articles, and because the tubular articles are not well fixed in shape, offset dislocation is easy to occur, the machining precision is affected, and the rejection rate is improved.

In order to solve the technical problems, china patent (patent publication No. CN 218694845U) discloses a fixed spot welder, which structurally comprises a spot welding device, a welding machine, a pneumatic cylinder, a controller, an upper electrode, a lower electrode, a fixing device and the like, wherein the fixed spot welder can be used for fixing tubular articles and adjusting the height of the tubular articles so as to be matched with the spot welding device to facilitate welding.

Although the problem that the tubular article is not well fixed when being welded is solved by the technical scheme, the height adjustment of the tubular article in the device is implemented by the structural principle of threaded connection, and the structure of the threaded connection can only ensure that the height adjustment is convenient and fast, but the height of the tubular article is unchanged after the stable adjustment, so that the device still has certain defects: either requiring the worker to hold it steady manually or additionally increasing the risk of shifting the tubular article.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a fixed spot welder, which can solve the problems that the tubular workpiece with the height adjusted cannot be well stabilized and the device has certain defects in the prior art.

According to an embodiment of the present utility model, a stationary spot welder includes:

the top of the frame is fixedly provided with a pneumatic cylinder, the telescopic end of the pneumatic cylinder penetrates into the frame in the vertical direction and then is connected with an upper electrode, and the frame is provided with a lower electrode in a matched manner;

the mounting plate is fixedly connected with the rack, the mounting plate is provided with connecting seats, connecting plates are fixedly arranged at two opposite ends of each connecting seat, and each connecting plate is provided with a plurality of through holes;

the clamping pieces are provided with a plurality of groups and are connected with the through holes in a one-to-one correspondence manner, and the plurality of groups of clamping pieces are combined to carry out multi-point clamping and fixing on the tubular workpiece;

the driving mechanisms are provided with two groups and are respectively connected with clamping pieces on different sides, each group of driving mechanism comprises a first threaded rod, an upper nut, a second threaded rod and a lower nut, the first threaded rod is rotatably arranged at the top of the connecting seat along the vertical direction, the upper nut is in threaded connection with the first threaded rod, and the upper nut is connected with the clamping pieces through the first connecting piece; the second threaded rod is rotatably arranged on the outer side wall of the connecting seat along the vertical direction, the lower nut is in threaded connection with the second threaded rod, and the lower nut is connected with the clamping piece through the second connecting piece.

The technical principle of the utility model is as follows: the clamping pieces are uniformly distributed along the transverse direction, so that the tubular workpiece can be horizontally placed, then the first threaded rod is driven to rotate, the first threaded rod can drive the upper nut to move upwards or downwards, and further the clamping gaps inside the clamping pieces are increased or reduced under the action of the first connecting piece, so that the tubular workpiece can be clamped after being loosened; when the welding machine is required, the second threaded rod is driven to rotate to drive the lower nut to move upwards or downwards, at the moment, the lower nut can drive the clamping piece and the tubular workpiece to integrally change in height under the action of the second connecting piece until the clamping piece is suitable, and then the first threaded rod is driven to rotate again, so that the upper nut drives the clamping piece to reduce the internal clamping gap, the tubular workpiece can be stably clamped, and the integral positions of the clamping piece and the tubular workpiece are fixed under the action of the second connecting piece, so that the welding machine cannot easily deviate, and the welding precision is improved.

Preferably, each clamping piece comprises two arc-shaped retaining plates, and the two arc-shaped retaining plates are arranged at intervals up and down and are internally provided with clamping gaps; the second connecting piece comprises a plurality of supporting rods and a second transverse plate, the supporting rods are arranged in the through holes in a one-to-one correspondence manner in a sliding manner along the vertical direction, and the upper ends of the supporting rods penetrate through the through holes and are fixedly connected with the arc-shaped retaining plates positioned below; one end of the second transverse plate is fixedly connected with the lower nut, and the other end of the second transverse plate is fixedly connected with the plurality of support rods.

Through adopting above-mentioned technical scheme, the connection of lower nut and second screw rod, bracing piece and through-hole for can increase this partial connection structure's stability, can maintain its position after adjusting unchanged in nimble adjustment bracing piece height, two arc butt plates can be followed upper and lower both sides and acted on simultaneously, and the butt of a wide range is fixed to tubular workpiece.

Preferably, the first connecting piece comprises a first transverse plate, a plurality of arc-shaped retaining plates positioned above the first connecting piece are fixedly connected with the first transverse plate, and the first transverse plate is fixedly connected with the upper nut; the first transverse plates are provided with limiting mechanisms.

Through adopting above-mentioned technical scheme, stop gear makes first diaphragm only follow vertical direction and removes, drives a plurality of arc butt plates that are located the top and remove, cooperates to carry out multidirectional butt fixed to tubular work piece.

Preferably, an elastic piece is sleeved outside each supporting rod, and two ends of the elastic piece are respectively connected with the second transverse plate and the inner wall of the through hole.

Through adopting above-mentioned technical scheme, when the bracing piece is driven to rise or descend, can drive the elastic component by compression or tensile in step, and then can increase the connection stability between bracing piece and second diaphragm and the through-hole under the elastic force effect of elastic component, prevent that tubular work piece from taking place skew or landing etc..

Preferably, the mounting plate is provided with driving wheels at two opposite ends in a rotating way, a transmission belt is sleeved between the two driving wheels, and the connecting seat is fixedly connected with the transmission belt; the outer side wall of the mounting plate is correspondingly provided with a sliding groove along the moving direction of the connecting seat, and the side edge of the connecting seat is in sliding connection with the sliding groove; the mounting plate is provided with a hand rocker in a rotating way on the end face of one side far away from the driving wheels, and the hand rocker is fixedly connected with one driving wheel in a coaxial way.

Through adopting above-mentioned technical scheme, the drive belt rotates, can drive the holistic position of connecting seat and change, makes the contact position of adjustment tubular work piece and upper electrode and bottom electrode, changes the welding point position, helps improving the practicality of this device.

Preferably, the first threaded rod and the second threaded rod are fixedly connected with a driving turntable in a coaxial manner.

Through adopting above-mentioned technical scheme, drive carousel can drive each threaded rod and rotate along specific direction, satisfies actual adjustment's demand.

Compared with the prior art, the utility model has the following beneficial effects:

1. through setting up first threaded rod, the second threaded rod, go up the nut, lower nut, first connecting piece and second connecting piece etc. can carry out adaptability to the inside clearance of holder to this comes to carry out effectual fixed in position and accurate welding to the tubular work piece of internal diameter difference, welding locus difference in height, first connecting piece and second connecting piece have increased the fixed effect in position of holder and tubular work piece simultaneously, make can prevent that its unstable emergence of position from squinting after adjusting welding height, improved the practicality of device greatly, can assist to improve welded precision.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is an enlarged view of the structure of the present utility model at a.

In the above figures: 1 frame, 2 pneumatic cylinders, 3 upper electrodes, 4 lower electrodes, 5 mounting plates, 6 connecting seats, 7 connecting plates, 8 clamping elements, 801 arc-shaped retaining plates, 9 first threaded rods, 10 upper nuts, 11 lower nuts, 12 first connecting elements, 1201 first transverse plates, 13 second connecting elements, 1301 supporting rods, 1302 second transverse plates, 1303 elastic elements, 14 driving wheels, 15 driving belts, 16 sliding grooves, 17 driving turntables and 18 second threaded rods.

Detailed Description

The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.

As shown in fig. 1 and 2, an embodiment of the present utility model proposes a stationary spot welder including: the device comprises a frame 1, wherein a pneumatic cylinder 2 is fixedly arranged at the top of the frame 1, an upper electrode 3 is connected after a telescopic end of the pneumatic cylinder 2 penetrates into the frame 1 along the vertical direction, and a lower electrode 4 is cooperatively arranged on the frame 1; the mounting plate 5 is fixedly connected with the frame 1, the mounting plate 5 is provided with a connecting seat 6, the connecting seat 6 is fixedly provided with connecting plates 7 at two opposite ends, and each connecting plate 7 is provided with a plurality of through holes; the clamping pieces 8 are provided with a plurality of groups and are connected with the through holes in a one-to-one correspondence manner, and the clamping pieces 8 are combined to carry out multi-point clamping and fixing on the tubular workpiece; the driving mechanisms are provided with two groups and are respectively connected with clamping pieces 8 on different sides, each group of driving mechanism comprises a first threaded rod 9, an upper nut 10, a second threaded rod 18 and a lower nut 11, the first threaded rod 9 is rotatably arranged at the top of the connecting seat 6 along the vertical direction, the upper nut 10 is in threaded connection with the first threaded rod 9, and the upper nut 10 is connected with the clamping pieces 8 through a first connecting piece 12; the second threaded rod 18 is rotatably arranged on the outer side wall of the connecting seat 6 along the vertical direction, the lower nut 11 is in threaded connection with the second threaded rod 18, and the lower nut 11 is connected with the clamping piece 8 through the second connecting piece 13.

Further, each clamping piece 8 comprises two arc-shaped retaining plates 801, wherein the two arc-shaped retaining plates 801 are arranged at intervals up and down and a clamping gap is reserved inside; the second connecting piece 13 comprises a plurality of support rods 1301 and a second transverse plate 1302, the support rods 1301 are arranged in the through holes in a sliding mode along the vertical direction in a one-to-one correspondence mode, and the upper ends of the support rods 1301 penetrate through the through holes and are fixedly connected with the arc-shaped retaining plates 801 located below; one end of the second transverse plate 1302 is fixedly connected with the lower nut 11, and the other end is fixedly connected with the plurality of support rods 1301.

Further, the first connecting piece 12 includes a first transverse plate 1201, and a plurality of arc-shaped retaining plates 801 located above are fixedly connected to the first transverse plate 1201, and the first transverse plate 1201 is fixedly connected to the upper nut 10; the first cross plates 1201 are each provided with a limiting mechanism.

Further, an elastic element 1303 is sleeved on the outer portion of each support bar 1301, and two ends of the elastic element 1303 are respectively connected with the second transverse plate 1302 and the inner wall of the through hole.

The detailed working procedures of the embodiment are as follows: the tubular workpiece is placed between the upper arc-shaped retaining plate 801 and the lower arc-shaped retaining plate 801, under the action of gravity, the tubular workpiece is connected with the arc-shaped retaining plate 801 positioned below, at this time, the second threaded rod 18 can be driven to rotate, the second threaded rod 18 rotates to drive the lower nut 11 to move upwards, then the second transverse plate 1302 and the supporting rod 1301 drive the arc-shaped retaining plate 801 positioned below to move upwards, the height of the tubular workpiece is changed, in the height adjusting process, the elastic element 1303 sleeved outside the supporting rod 1301 is driven to compress and abutted between the through hole and the second transverse plate 1302, at this time, the fixed connection structure of the second transverse plate 1302 and the lower nut 11, the fixed connection structure of the supporting rod 1301 and the arc-shaped retaining plate 801, and the compression of the elastic element 1303 can be increased, so that the stability of the arc-shaped retaining plate 801 and the tubular workpiece after the height adjustment can be effectively fixed, then the first threaded rod 9 is driven to rotate, the first transverse plate 1201 is driven to move downwards through the upper nut 10, the upper arc-shaped retaining plate 801 and the lower arc-shaped plate 801 are mutually close to each other, and the tubular workpiece is tightly abutted against the outer wall is prevented from being tightly fixed when the tubular workpiece is welded.

Specifically, the limiting mechanism of the first transverse plate 1201 may be a vertically arranged limiting rod (not shown in the figure), so that the first transverse plate 1201 is slidably connected to the limiting rod, and the first transverse plate 1201 can be limited to move only vertically up and down.

In particular, the resilient element 1303 may be a spring with a damping effect.

As shown in fig. 1 and 2, according to another embodiment of the present utility model, a fixed spot welder is provided, wherein a driving wheel 14 is rotatably provided at opposite ends of a mounting plate 5, a driving belt 15 is arranged in a driving sleeve between the two driving wheels 14, and a connecting seat 6 is fixedly connected with the driving belt 15; the outer side wall of the mounting plate 5 is correspondingly provided with a chute 16 along the moving direction of the connecting seat 6, and the side edge of the connecting seat 6 is in sliding connection with the chute 16; the mounting plate 5 is rotatably provided with a hand lever (not shown) on the end face of the side remote from the driving wheels 14, the hand lever being fixedly connected coaxially with one of the driving wheels 14.

The detailed working procedure of this embodiment is: when the height position of the tubular workpiece is adjusted properly and fixedly, the driving wheel 14 can be driven to rotate through the hand crank, the driving wheel 14 rotates to drive the driving belt 15 to rotate, the connecting seat 6 is fixedly connected with the driving belt 15 and can be driven to move, and then the transverse position of the tubular workpiece is driven to be adjusted, so that the welding is convenient after the tubular workpiece is aligned with the upper electrode 3 and the lower electrode 4, and in the moving process of the connecting seat 6, the side edge of the lower part of the connecting seat 6 is always in sliding connection with the sliding groove 16, so that the moving stability of the integral structure on the connecting seat 6 can be increased, and the welding accuracy is improved in an auxiliary manner. Specifically, the connection base 6 may be provided in a U-shaped structure.

As shown in fig. 1 and 2, according to another embodiment of the present utility model, a fixed spot welder is provided, wherein a driving turntable 17 is fixedly connected to each of the first threaded rod 9 and the second threaded rod 18 coaxially.

The detailed working procedure of this embodiment is: the operator can rotate the driving turnplate 17 at different positions to sequentially drive the first threaded rod 9 or the second threaded rod 18 to rotate, so that the operations of height adjustment, fixation and the like of the tubular workpiece are completed.

The implementation principle of the embodiment of the application is as follows:

when the welding machine is used, a tubular workpiece is placed between the upper arc-shaped retaining plates 801 and the lower arc-shaped retaining plates 801, the second threaded rod 18 is firstly driven to rotate through the driving turntable 17, the second threaded rod 18 drives the lower nut 11 to move upwards, then the arc-shaped retaining plates 801 located below are driven to move upwards through the second transverse plate 1302 and the supporting rod 1301, the placing height of the tubular workpiece is changed, when the height is adjusted to be proper, the second threaded rod 18 is stopped to rotate, the first threaded rod 9 is driven to rotate, the first transverse plate 1201 is driven to move downwards through the upper nut 10, the upper arc-shaped retaining plates 801 and the lower arc-shaped retaining plates 801 are close to each other and are tightly abutted to the outer walls of the two sides of the tubular workpiece, the position of the tubular workpiece is fixed, and under the elastic compression action of the structures of the elastic pieces 1303, namely, the height position of the supporting rod 1301 is effectively fixed after being adjusted, the tubular workpiece is prevented from being shifted during welding, and then the upper electrode 3 is driven to move through the pneumatic cylinder 2, and the lower electrode 4 is mutually matched to form a current loop, and the welding operation is completed.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. A stationary spot welder, comprising:

the device comprises a frame (1), wherein a pneumatic cylinder (2) is fixedly arranged at the top of the frame, an upper electrode (3) is connected after a telescopic end of the pneumatic cylinder (2) penetrates into the frame (1) along the vertical direction, and a lower electrode (4) is arranged on the frame (1) in a matched manner;

the mounting plate (5) is fixedly connected with the frame (1), the mounting plate (5) is provided with a connecting seat (6), the connecting seats (6) are fixedly provided with connecting plates (7) at two opposite ends, and a plurality of through holes are formed in each connecting plate (7);

the clamping pieces (8) are provided with a plurality of groups and are connected with the through holes in a one-to-one correspondence manner, and the clamping pieces (8) are combined to carry out multi-point clamping and fixing on the tubular workpiece;

the driving mechanisms are provided with two groups and are respectively connected with clamping pieces (8) on different sides, each group of driving mechanism comprises a first threaded rod (9), an upper nut (10), a second threaded rod (18) and a lower nut (11), the first threaded rod (9) is rotationally arranged at the top of the connecting seat (6) along the vertical direction, the upper nut (10) is in threaded connection with the first threaded rod (9), and the upper nut (10) is connected with the clamping pieces (8) through a first connecting piece (12); the second threaded rod (18) is arranged on the outer side wall of the connecting seat (6) in a rotating mode along the vertical direction, the lower nut (11) is in threaded connection with the second threaded rod (18), and the lower nut (11) is connected with the clamping piece (8) through the second connecting piece (13).

2. A stationary spot welder according to claim 1, wherein: each clamping piece (8) comprises two arc-shaped retaining plates (801), and the two arc-shaped retaining plates (801) are arranged at intervals up and down and are internally provided with clamping gaps; the second connecting piece (13) comprises a plurality of support rods (1301) and a second transverse plate (1302), the support rods (1301) are arranged in the through holes in a sliding mode along the vertical direction in a one-to-one correspondence mode, and the upper ends of the support rods (1301) penetrate through the through holes and are fixedly connected with the arc-shaped retaining plates (801) located below; one end of the second transverse plate (1302) is fixedly connected with the lower nut (11), and the other end of the second transverse plate is fixedly connected with the plurality of support rods (1301).

3. A stationary spot welder according to claim 2, wherein: the first connecting piece (12) comprises a first transverse plate (1201), a plurality of arc-shaped retaining plates (801) positioned above are fixedly connected with the first transverse plate (1201), and the first transverse plate (1201) is fixedly connected with the upper nut (10); the first transverse plates (1201) are provided with limiting mechanisms.

4. A stationary spot welder according to claim 3, wherein: an elastic element (1303) is sleeved outside each supporting rod (1301), and two ends of the elastic element (1303) are respectively connected with the second transverse plate (1302) and the inner wall of the through hole.

5. A stationary spot welder according to claim 1, wherein: the mounting plate (5) is rotatably provided with driving wheels (14) at two opposite ends, a transmission belt (15) is sleeved between the two driving wheels (14), and the connecting seat (6) is fixedly connected with the transmission belt (15); the outer side wall of the mounting plate (5) is correspondingly provided with a sliding groove (16) along the moving direction of the connecting seat (6), and the side edge of the connecting seat (6) is in sliding connection with the sliding groove (16); the mounting plate (5) is rotatably provided with a hand rocker on the end face of one side far away from the driving wheels (14), and the hand rocker is fixedly connected with one driving wheel (14) through the same axis.

6. A stationary spot welder according to claim 1, wherein: and the first threaded rod (9) and the second threaded rod (18) are fixedly connected with a driving turntable (17) in a coaxial manner.