CN215545736U - Projection welding floating tool - Google Patents

Abstract

The utility model discloses a projection welding floating tool, which overcomes the problem that the welding strength is insufficient easily at the longitudinal end part of welding because the downward moving height of two convex points is inconsistent along with the downward moving of projection welding in the prior art. During welding, a floating device is adopted for positioning parts instead of a fixed support, the parts can move downwards along with the melting of the welding salient points, and the two wire harness support lugs can be in good contact with the oil storage barrel, so that a good welding effect is achieved; meanwhile, the lower electrode base is of a split structure, so that the lower electrode base is convenient to disassemble, maintain and replace the conductive block.

Description

Projection welding floating tool

Technical Field

The utility model relates to the technical field of welding, in particular to a projection welding floating tool.

Background

Projection welding is a high-efficiency welding method capable of simultaneously performing multiple spot welding, and can be used instead of arc welding, brazing, and bite welding. The method has the characteristics of high processing speed and no other consumption except electric power, and is a great characteristic. The difference between projection welding and spot welding is that a plate is provided with a projection in advance, or a profile, a chamfer, or the like, on which current can be concentrated, is used as a mutual contact portion during welding. The welding is carried out by the contact of the salient points, so that the pressure and the current density on a unit area are improved, the oxide film on the surface of the plate is favorably crushed, the heat is concentrated, the shunt is reduced, the center distance of spot welding is reduced, the multi-point projection welding can be carried out at one time, the production efficiency is improved, and the warping deformation of the joint is reduced. On the vehicle body, a projection welding nut (a nut with convex points) is generally welded on a thin plate, so that only a bolt needs to be screwed during assembly, and the assembly efficiency is improved.

However, the traditional tool moves down along with the convex spot welding, and the moving-down heights of the two convex spots are inconsistent, so that the situation of insufficient welding strength easily occurs when the traditional tool welds the longitudinal end part. For example, the chinese patent office 2011, 06, 15 discloses a utility model named as an automobile shock absorber support projection welding floating tool, and the publication number is CN 201862913U. The utility model discloses a projection welding floating tool for a support of an automobile shock absorber, which relates to spot welding equipment and comprises a projection welding floating general base, an interchangeable positioning frame for the support of the automobile shock absorber, an interchangeable positioning frame positioning mechanism, a wedge-shaped pressing mechanism, an upper electrode holder and a lower electrode holder; the utility model discloses an interchangeable automobile shock absorber ware support locating rack passes through interchangeable locating rack positioning mechanism and wedge hold-down mechanism and installs on the unsteady general base of projection welding, and projection welding floats general pedestal mounting on projection welding machine's casing, goes up the electrode holder and installs under projection welding machine's last electrode plate, and the bottom electrode is installed on projection welding machine's bottom plate electrode. The spring buffer is used for buffering at the moment of welding contact, so that the welding is stable and reliable, the convex point is not subjected to plastic deformation, the change of the size of the convex point due to the impact of an upper electrode cylinder is avoided, and the welding strength stability is good; however, the problems that the initial position and the welding end position are not synchronously moved down in the welding process of the two convex points and the welding heat input of the two convex points is not balanced exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that in the prior art, welding strength of a convex spot of a wire-tying lug is insufficient, parts fall off, and loading of a customer is influenced, and provides a projection welding floating tool.

In order to achieve the purpose, the utility model adopts the following technical scheme: the welding device comprises a base, a lower electrode seat for performing projection welding and a floating device for enabling the tail end of a part A to be welded to float up and down, wherein the lower electrode seat and the floating device are fixed at two ends of the base respectively, one end of the part A to be welded is located on the lower electrode seat, the other end of the part A to be welded is located on the floating device, a part B to be measured is fixed on the lower electrode seat, and the floating device comprises a device main body and a supporting plate floating up and down above the device main body. Taking an oil storage barrel and a limiting sheet as an example, when the device is used, the limiting sheet is fixed on the lower electrode seat, the oil storage barrel is placed on the device, one end of the oil storage barrel is placed on the lower electrode seat, and the other end of the oil storage barrel is placed on the floating mechanism. The upper electrode is pressed downwards, the upper electrode and the lower electrode form a loop, so that the convex points on the oil storage barrel are melted, the oil storage barrel is arranged at one end of the lower electrode seat and moves downwards, the floating mechanism can move downwards along with the process that the convex points at one end of the lower electrode seat melt the oil storage barrel and move downwards, the oil storage barrel integrally moves downwards, the phenomenon that the lug projection welding strength is unstable during the working of the shock absorber can be effectively solved, the false welding existing in the two convex points is avoided, and the welding strength of the shock absorber can be ensured. And the electrode can be replaced according to the condition after being worn and replaced, and the whole lower electrode does not need to be replaced.

Preferably, the floating device further comprises two baffle plates and an elastic piece, the baffle plates are used for limiting, the upper surface of the device body is of a structure with a middle protruding part and two lower ends, the baffle plates are arranged at the two lower ends of the upper surface of the device body, concave edges are arranged on the inner sides of the baffle plates, the concave edges and the protruding parts of the upper surface of the device body form a placing groove, the height of the placing groove is larger than the thickness of the supporting plate, the supporting plate is arranged between the two baffle plates, the two ends of the supporting plate are embedded into the placing groove, and the supporting plate is connected with the device body through the elastic piece. On one hand, the baffle is used for limiting the part A to be welded so that the part A cannot slide left and right; the other surface is used for limiting the supporting plate, so that the supporting plate cannot shake up and down. When the device is used, the part A to be welded is positioned by adopting a floating mechanism instead of a fixed support, so that the part A to be welded can move downwards along with the melting of the welding salient points, and the two wire harness support lugs can be in good contact with the oil storage barrel, thereby achieving a good welding effect.

Preferably, the elastic member comprises two springs, two grooves are arranged in the device main body, one end of each spring is arranged in each groove, and the other end of each spring protrudes out of the device main body and is abutted against the bottom of the supporting plate. The part A to be welded is light in weight, and when the part A is not welded, the supporting plate cannot be pressed downwards under the condition of no external force. During welding, as the salient points are melted, the part A to be welded is positioned at one end of the lower electrode base and moves downwards, and the end of the floating mechanism synchronously moves downwards through the spring by means of the pressure of the upper electrode until the supporting plate is abutted against the device main body, so that the part A cannot move downwards.

Preferably, the elastic member further comprises a guide pin, the guide pin is inserted into the groove and fixed at the bottom of the groove, the upper end of the guide pin protrudes out of the surface of the main body, the supporting plate is provided with two insertion holes, the upper end of the guide pin is inserted into the insertion holes, and the spring is sleeved on the guide pin. The guide pin one end is fixed inside the device main part, and the layer board is inserted to the other end, and the layer board can be along activity about arriving the school, can be when the welding, and the in-process that the layer board reciprocated plays the effect of a direction, and it is more stable to make the fluctuation, can not produce the deviation.

Preferably, the lower electrode base comprises a fixed block and two conductive blocks, the conductive blocks are arranged at two ends of the fixed block in the length direction, a gap is reserved between the two conductive blocks, and the conductive blocks are connected with the fixed block. The fixing seat is used for supporting and positioning, the conductive block is used for conducting electricity, and when the welding is carried out, the upper electrode is pressed down to form a loop with the upper electrode, so that the salient point of the part A to be welded is melted. The conducting block passes through screwed connection with the fixed block, convenient to detach, the maintenance of being convenient for and maintenance.

Preferably, the lower electrode holder further comprises limiting blocks located on two sides of the conducting block in the width direction, the limiting blocks are fixed on the conducting block through first limiting screws, and the part B to be measured surrounds the upper surface and the outer side of the conducting block and is fixed on the conducting block through second limiting screws. The first limiting screws fix the limiting blocks at two sides of the conductive block and are used for limiting the deviation of the part A to be welded and preventing the part A from moving; the second limiting screw is used for limiting the part B to be welded and fixing the part B to be welded on the conducting block, so that the welding is more stable.

Preferably, the upper surface of the conductive block is a concave arc surface matched with the shape of the part B to be welded. The upper surface of the conductive block is matched with the part B to be welded, so that the connection is tighter during welding, the welding effect is better, and the welding quality is higher.

Preferably, the projection welding floating tool further comprises a supporting plate, the supporting plate is installed on the base and located between the lower electrode holder and the floating device, the supporting plate, the floating device and the lower electrode holder are located on the same straight line, and a mounting groove for placing a part A to be welded is formed in the supporting plate. The supporting plate is used for supporting the part A to be welded on one hand, and limiting the position of the part A to be welded on the other hand, so that the part A to be welded is prevented from sliding left and right. During welding, treat that welding part A places in the recess of backup pad, prevent to treat that welding part A slides from side to side, make the welding more stable.

Preferably, the projection welding floating tool further comprises a steering knuckle support angle positioning block, and the steering knuckle support angle positioning block is installed on the base and located on two sides of the lower electrode base in the width direction. The angle positioning block of the steering knuckle bracket can control the angle of the part A to be welded when the part A to be welded is lapped on the angle positioning block.

Preferably, the floating device further comprises a positioning plate, and the positioning plate is located on the outer side of the floating device and fixedly connected with the baffle. The positioning plate is arranged on the baffle of the floating device and is positioned on one side of the floating device, which is far away from the lower electrode base, so that the supporting plate is prevented from moving outwards on one hand, and the up-and-down floating during welding is more stable; on the other hand, the part A to be welded is prevented from moving outwards, so that the welding is firmer.

Therefore, the utility model has the following beneficial effects: 1. the part A to be welded is positioned by adopting a floating device instead of a fixed support, the part A to be welded can move downwards along with the melting of the welding salient points, and the two wire harness support lugs can be in good contact with the oil storage barrel, so that a good welding effect is achieved; 2. the lower electrode base adopts a split structure of the fixed block and the conductive block, so that the lower electrode base is convenient to disassemble, maintain and replace the conductive block.

Drawings

FIG. 1 is a schematic structural view of the present invention;

figure 2 is a cross-sectional view of the lower electrode holder of the present invention;

FIG. 3 is a cross-sectional view of the flotation device of the present invention;

in the figure: 1. A base; 2. a device main body; 3. a baffle plate; 4. a support plate; 5. a guide pin; 6. a spring; 7. a fixed block; 8. a conductive block; 9. a first limit screw; 10. a support plate; 11. a knuckle bracket angle positioning block; 12. positioning a plate; 13 a second limit screw; 14. a part B to be tested; 15. a groove; 16. and (4) mounting the groove.

Detailed Description

The utility model is described in further detail below with reference to the following detailed description and accompanying drawings:

the embodiment is a projection welding floating tool, taking a part a to be measured as an oil storage barrel and a part B14 to be measured as a limiting piece, as shown in fig. 1, the structure comprises a base 1, a floating device, a lower electrode base, a support plate 10, a knuckle support angle positioning block 11 and a positioning plate 12. The floating device and the lower electrode holder are respectively arranged at two ends of the base 1 through screws; the supporting plate 10 is arranged on the base 1 and positioned between the floating device and the lower electrode base, an installation groove 16 for placing an oil storage barrel is arranged on the supporting plate 10, on one hand, the supporting plate 10 is used for supporting the oil storage barrel, on the other hand, the position of the oil storage barrel is limited, and the oil storage barrel is prevented from sliding left and right; the knuckle bracket angle positioning blocks 11 are arranged on the base 1 and located on two sides of the lower electrode base, and the knuckle bracket angle positioning blocks 11 can control the angle of the oil storage barrel when the oil storage barrel is lapped on the upper surface during welding; the positioning plate 12 is mounted on the floating device, so that the oil storage barrel can be prevented from moving outwards, and the welding is firmer. The lower electrode base adopts a split structure and comprises a fixed block 7 fixed on the base 1 and two conductive blocks 8 arranged on the fixed block 7, a gap is reserved between the two conductive blocks, the fixed block 7 is used for supporting and positioning, and the conductive blocks 8 are used for conducting electricity and form a loop with the upper electrode during welding. The lower electrode base also comprises two first limiting screws 9, two second limiting screws 13 and four limiting blocks, and the two limiting blocks are respectively fixed on two sides of the conducting block 8 in the width direction through one first limiting screw; the limiting sheet is fixed on the conductive block 8 through a second limiting screw located on one side, deviating from the gap, of the conductive block 8. The floating device comprises a device main body 2, baffle plates 3 and a supporting plate 4, wherein the baffle plates 3 are arranged on two sides of the device main body 2 and form a placing groove with the device main body 2 to prevent the oil storage barrel from sliding left and right during welding; the supporting plate 4 is positioned in the placing groove. During welding, the oil storage barrel is placed on the mounting groove 16 of the support plate 10, one end of the oil storage barrel is in contact with the lower electrode holder, the other end of the oil storage barrel is in contact with the supporting plate 4 of the floating device, and the limiting piece is mounted on the lower electrode holder; when the upper electrode is pressed down, the upper electrode and the lower electrode form a loop, and the salient points of the oil storage barrel are melted; the oil storage barrel is placed at one end of the lower electrode seat and can move downwards along with the melting of the salient points, the oil storage barrel is placed at one end of the floating device, and can synchronously move downwards by means of the pressure of the upper electrode, so that the firm welding is ensured.

As shown in fig. 2, the lower electrode holder adopts a split structure and comprises a fixed block 7 and two conductive blocks 8, wherein the fixed block 7 is fixed on the base 1 through screws to play a role in supporting and positioning; the two conductive blocks 8 are fixed at two ends of the fixed block 7 along the length direction through screws, and a gap is reserved between the two conductive blocks 8 to play a role in conducting electricity. Through screwed connection, convenient dismantlement is convenient for maintain, maintain maintenance and change conducting block 8, raises the efficiency. The lower electrode base further comprises limiting blocks located on two sides of the conducting block 7 in the width direction, the limiting blocks are fixed on the conducting block 7 through first limiting screws 9, and the part B to be measured surrounds the upper surface and the outer side of the conducting block 7 and is fixed on the conducting block 7 through second limiting screws 13. First spacing screw 9 and stopper are used for restricting the oil storage bucket off normal, prevent that the oil storage bucket from moving.

As shown in fig. 3, the floating device comprises a device body 2, a baffle 3, a supporting plate 4, a spring 6 and a guide pin 5, wherein the upper surface of the device body 2 is of a structure with a convex middle part and lower two ends, and the device body 2 is fixed on a base 1 through screws, so that the device body is convenient to detach and replace; baffle 3 is installed at the lower both ends of 2 upper surfaces of device main parts, and 3 inboards of baffle are equipped with concave edge, concave edge and device main part upper surface bulge form a standing groove, and the standing groove height is greater than layer board 4 thickness, and layer board 4 sets up between two baffle 3, and the both ends embedding of layer board 4 is in the standing groove, and baffle 3 is used for spacing oil storage bucket on the one hand, makes the oil storage bucket can not the horizontal slip, and another is used for spacing layer board 4 as the face, makes layer board 4 can not rock from top to bottom. The supporting plate 4 is connected with the device body 2 through a spring 6, two grooves 15 are formed in the device body 2, one end of the spring 6 is arranged in the groove 15 and fixedly connected with the device body 2, and the other end of the spring is arranged outside the device body 2 and abutted against the supporting plate 4. The spring 6 is the main part of the floating device, the oil storage barrel has light weight, and the supporting plate 4 cannot be pressed down under the condition of no external force when the oil storage barrel is not welded. During welding, the oil storage barrel is located at one end of the lower electrode base and moves downwards along with melting of the salient points, and the end of the floating device synchronously moves downwards through the spring 6 by means of the pressure of the upper electrode until the supporting plate 4 is abutted against the device main body 2, so that the oil storage barrel cannot move downwards. The supporting plate 4 is provided with two insertion holes, the guide pin 5 is inserted into the groove 15 and fixed at the bottom of the groove 15, the upper end of the guide pin protrudes out of the surface of the main body, the supporting plate 4 is provided with two insertion holes, the upper end of the guide pin is inserted into the insertion holes, and the spring is sleeved on the guide pin 5. During welding, the guide pin 5 plays a guiding role in the process that the supporting plate 4 moves up and down, so that the up-and-down floating is more stable, and deviation cannot be generated.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the utility model as set forth in the claims.

Claims (10)

1. The utility model provides a projection welding frock of floating, a serial communication port, including base (1), carry out the lower electrode holder of projection welding and make and treat the floating installation that welding part A end floated from top to bottom, lower electrode holder and floating installation are fixed respectively at base (1) both ends, treat that welding part A one end is located the lower electrode holder, the other end is located floating installation, part B (14) that await measuring are fixed on the electrode holder down, floating installation includes device main part (2) and layer board (4) that floats from top to bottom in device main part (2) top.

2. The floating tool for the projection welding according to claim 1, wherein the floating device further comprises two baffle plates (3) used for limiting and an elastic member, the upper surface of the device body (2) is of a structure with a convex middle part and lower two ends, the baffle plates (3) are installed at the two lower ends of the upper surface of the device body (2), concave edges are arranged on the inner sides of the baffle plates (3), the concave edges and the convex parts of the upper surface of the device body form a placing groove, the height of the placing groove is larger than the thickness of the supporting plate (4), the supporting plate (4) is arranged between the two baffle plates (3), the two ends of the supporting plate (4) are embedded into the placing groove, and the supporting plate (4) is connected with the device body (2) through the elastic member.

3. A projection welding floating tool according to claim 2, characterized in that the elastic member comprises two springs (6), two grooves (15) are arranged in the device body (2), one end of each spring (6) is arranged in each groove (15), and the other end of each spring (6) protrudes out of the device body (2) and abuts against the bottom of the supporting plate (4).

4. A projection welding floating tool according to claim 3, characterized in that the elastic member further comprises a guide pin (5), the guide pin is inserted into the groove (15) and fixed at the bottom of the groove (15), the upper end of the guide pin protrudes out of the surface of the main body, the support plate (4) is provided with two insertion holes, the upper end of the guide pin is inserted into the insertion holes, and the spring is sleeved on the guide pin (5).

5. The projection welding floating tool according to claim 1, wherein the lower electrode holder comprises a fixed block (7) and two conductive blocks (8), the conductive blocks (8) are arranged at two ends of the fixed block (7) in the length direction, a gap is reserved between the two conductive blocks, and the conductive blocks (8) are connected with the fixed block (7).

6. The projection welding floating tool according to claim 5, wherein the lower electrode holder further comprises limiting blocks located on two sides of the conductive block (7) in the width direction, the limiting blocks are fixed on the conductive block (7) through first limiting screws (9), and the part B (14) to be tested surrounds the upper surface and the outer side of the conductive block (7) and is fixed on the conductive block (7) through second limiting screws (13).

7. A projection welding floating tool according to claim 5, characterized in that the upper surface of the conductive block (8) is a concave arc surface matched with the shape of the part B (14) to be welded.

8. A projection welding floating tool according to claim 1, characterized by further comprising a supporting plate (10), wherein the supporting plate (10) is installed on the base (1), the supporting plate (10) is located between the lower electrode holder and the floating device, the supporting plate (10) is located on the same straight line with the floating device and the lower electrode holder, and an installation groove (16) for placing a part A to be welded is formed in the supporting plate (10).

9. The projection welding floating tool according to claim 1, further comprising knuckle bracket angle positioning blocks (11), wherein the knuckle bracket angle positioning blocks (11) are mounted on the base (1) and located on two sides of the lower electrode holder in the width direction.

10. A projection welding floating tool according to claim 2, characterized in that the floating device further comprises a positioning plate (12), and the positioning plate (12) is positioned outside the floating device and fixedly connected with the baffle plate (3).

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