Positioning device for projection welding of welding tongs

Abstract

The utility model relates to the technical field of projection welding positioning, in particular to an electrode holder projection welding positioning device which comprises an electrode holder body and a positioning assembly. The positioning assembly comprises a lower transition electrode, an upper transition electrode, a mounting base, an insulating sleeve, a positioning pin, a positioning frame, a mounting frame, a fixing block and a mounting bolt, the lower transition electrode is mounted on a lower electrode arm of the welding pliers body, the upper transition electrode is mounted on an upper electrode arm of the welding pliers body, and the mounting base is fixedly mounted on the side, close to the upper transition electrode, of the lower transition electrode; the insulating sleeve is in threaded connection with the mounting base and located on the side, away from the lower transition electrode, of the mounting base, the positioning pin is in threaded connection with the insulating sleeve and located on the side, away from the mounting base, of the insulating sleeve, the mounting frame is detachably connected with the mounting base, the mounting bolt is in threaded connection with the mounting frame, and the fixing block is in threaded connection with the mounting bolt. And the positioning frame is fixedly mounted on the side, away from the fixed block, of the mounting frame, so that the positioning effect of the device on the workpiece and the projection welding nut is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to projection welding positioning technical field especially relates to a kind of positioning device of welding tongs projection welding. BACKGROUND

[0002] Projection welding is a kind of high-efficiency welding method that can simultaneously carry out multi-point welding, it makes one or more projections on the fitting surface of workpiece in advance, makes it contact with the surface of another workpiece and is electrified to heat, then collapses these projections, makes contact point form welding spot, the welding position between workpiece and projection nut is not positioned by the conventional positioning device, further affects the welding of workpiece and projection nut, thereby affecting the use effect of device.

[0003] Prior art CN201645106U discloses a kind of projection nut positioning device of current shunt prevention, including lower electrode, upper electrode, positioning pin, spring and insulating sleeve, workpiece and projection nut are loaded into the positioning pin in the middle of lower electrode, the welding between workpiece and projection nut is positioned, when welding, upper electrode is pressed down until it is pressed on projection nut, positioning pin is compressed spring and moves down until the upper end surface of positioning pin is flush with the upper end surface of projection nut, welding starts, the current of upper electrode flows to lower electrode through projection nut and the projection of projection nut, the projection of projection nut is heated under the action of current until it is crushed, when the temperature of welding point continues to rise to reach welding process condition, welding machine cuts off power, the temperature of welding point drops, when the temperature of welding point drops to specified requirement, upper electrode rises, positioning pin rises under the action of spring until it stops rising when the annular projection of positioning pin hits insulating sleeve, workpiece is taken out from positioning pin, the projection process of projection nut is completed, the welding position between workpiece and projection nut is positioned, thereby improving the use effect of device.

[0004] In normal use, the positioning mode of prior art to workpiece, workpiece drives projection nut to tilt in the process of positioning workpiece, further makes projection nut contact badly in the process of contacting with upper electrode, affects the welding process between workpiece and projection nut, thereby affecting the positioning effect of device between workpiece and projection nut. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of positioning device of welding tongs projection welding, solve the positioning mode of prior art to workpiece, workpiece drives projection nut to tilt in the process of positioning workpiece, further makes projection nut contact badly in the process of contacting with upper electrode, affects the welding process between workpiece and projection nut, thereby affecting the positioning effect of device between workpiece and projection nut problem.

[0006] In order to achieve the above object, the utility model provides a kind of positioning device of projection welding of welding tongs, including welding tongs body and positioning assembly;The positioning assembly includes lower transition electrode, upper transition electrode, mounting seat, insulating sleeve, positioning pin, positioning frame, mounting frame, solid block and mounting bolt, the lower transition electrode is installed on the lower electrode arm of the welding tongs body, the upper transition electrode is installed on the upper electrode arm of the welding tongs body, the mounting seat is fixedly installed on the side of the lower transition electrode close to the upper transition electrode, the insulating sleeve is threadedly connected with the mounting seat, and located on the side of the mounting seat away from the lower transition electrode, the positioning pin is threadedly connected with the insulating sleeve, and located on the side of the insulating sleeve away from the mounting seat, the mounting frame is detachably connected with the mounting seat, the mounting bolt is threadedly connected with the mounting frame, the solid block is threadedly connected with the mounting bolt, and the positioning frame is fixedly installed on the side of the mounting frame away from the solid block.

[0007] Among them, the mounting bolt includes mounting screw rod and mounting nut, the mounting screw rod is threadedly connected with the solid block, and is threadedly connected with the mounting frame;The mounting nut is threadedly connected with the mounting screw rod, and abuts on the solid block.

[0008] Among them, the mounting frame has through hole, the through hole is located on the side of the mounting frame close to the mounting screw rod, and is matched with the mounting screw rod;The solid block has connecting hole, and the connecting hole is located on the side of the solid block close to the mounting screw rod, and is matched with the mounting screw rod.

[0009] Among them, the positioning assembly further includes positioning rod and positioning cylinder, the positioning cylinder is fixedly connected with the mounting frame, and located on the side of the mounting frame close to the solid block;The positioning rod is slidably connected with the positioning cylinder, and is fixedly connected with the solid block.

[0010] Among them, the positioning cylinder has insertion hole, and the insertion hole is located on the side of the positioning cylinder close to the positioning rod, and is matched with the positioning rod.

[0011] The utility model discloses a kind of positioning device of projection welding of welding tongs, the installation screw rod passes through the connecting hole and the through hole and is connected with the installation nut, the solid block and the installation frame are installed on the mounting seat, workpiece is loaded in the workpiece positioning groove of the positioning frame and the positioning pin, projection nut is loaded in the positioning pin, the upper electrode end of the welding tongs body drives the upper transition electrode to press down, the current on the upper electrode end of the welding tongs body passes through the upper transition electrode, projection nut, workpiece, the mounting seat and the lower transition electrode to the lower electrode end of the welding tongs body, the welding projection of projection nut temperature rises under the action of current until welding projection collapses, and welding is carried out with workpiece, under the cooperation of the positioning pin and the positioning frame, avoid the situation that workpiece is inclined in the process of positioning, to improve the positioning effect between device and projection nut between workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced as follows.

[0013] Figure 1 It is the overall structure schematic diagram of the positioning device of the first embodiment welding tongs projection welding of the utility model.

[0014] Figure 2 It is the structure schematic diagram of the insulating sleeve and the positioning pin of the utility model.

[0015] Figure 3 It is the structure schematic diagram of the installation screw rod and the installation nut of the utility model.

[0016] Figure 4 It is the structure schematic diagram of the positioning rod and the positioning cylinder of the utility model.

[0017] In the drawing: 101-welding tongs body, 102-lower transition electrode, 103-upper transition electrode, 104-mounting seat, 105-insulating sleeve, 106-positioning pin, 107-positioning frame, 108-installation frame, 109-solid block, 110-installation bolt, 111-installation screw rod, 112-installation nut, 113-through hole, 114-connecting hole, 201-positioning rod, 202-positioning cylinder, 203-insertion hole. DETAILED DESCRIPTION

[0018] The embodiments of the utility model will be described in detail below, the examples of the embodiments are shown in the drawings, the embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0019] The first embodiment of the present application is:

[0020] Please refer to Figures 1-3 , Figure 1 It is the overall structure schematic diagram of the positioning device for the welding tongs projection welding of the first embodiment of the utility model, Figure 2 It is the structure schematic diagram of the insulating sleeve and the positioning pin, Figure 3 It is the structure schematic diagram of the installation screw rod and the installation nut, the utility model provides a kind of positioning device for the welding tongs projection welding, including welding tongs body 101 and positioning assembly;The positioning assembly includes lower transition electrode 102, upper transition electrode 103, mounting seat 104, insulating sleeve 105, positioning pin 106, positioning frame 107, installation frame 108, solid block 109 and installation bolt 110, the installation bolt 110 includes installation screw rod 111 and installation nut 112, the installation frame 108 has through-hole 113, the solid block 109 has connecting hole 114, the positioning mode of prior art to workpiece is solved by the foregoing scheme, it is prone to in the process of positioning workpiece to make workpiece drive projection nut to appear inclination angle inclination situation, and then make projection nut appear bad contact in the process of being contacted with upper electrode, affect the welding processing between workpiece and projection nut, thereby affect the positioning effect of device between workpiece and projection nut, it can be understood that the foregoing scheme can be used in the positioning mode of prior art to workpiece, it is prone to in the process of positioning workpiece to make workpiece drive projection nut to appear inclination angle inclination situation.

[0021] For this specific embodiment, the solid block 109 and the installation frame 108 are installed on the mounting seat 104 by the installation bolt 110, the workpiece is loaded into the workpiece positioning groove of the positioning frame 107 and the positioning pin 106, and the projection nut is loaded into the positioning pin 106. The upper electrode end of the welding tongs body 101 drives the upper transition electrode 103 to press down, the upper transition electrode 103 abuts on the projection nut, and the current on the upper electrode end of the welding tongs body 101 flows to the lower electrode end of the welding tongs body 101 through the upper transition electrode 103, the projection nut, the workpiece, the mounting seat 104 and the lower transition electrode 102. The welding projection of the projection nut increases in temperature under the action of the current until the welding projection is crushed, and the workpiece is welded. Under the cooperation of the positioning pin 106 and the positioning frame 107, the workpiece is prevented from tilting during positioning, thereby improving the positioning effect of the device between the workpiece and the projection nut.

[0022] The lower transition electrode 102 is installed on the lower electrode arm of the welding tongs body 101, the upper transition electrode 103 is installed on the upper electrode arm of the welding tongs body 101, the mounting seat 104 is fixedly installed on the side of the lower transition electrode 102 close to the upper transition electrode 103, the insulating sleeve 105 is threadedly connected with the mounting seat 104 and located on the side of the mounting seat 104 away from the lower transition electrode 102, the positioning pin 106 is threadedly connected with the insulating sleeve 105 and located on the side of the insulating sleeve 105 away from the mounting seat 104, the mounting frame 108 is detachably connected with the mounting seat 104, the mounting bolt 110 is threadedly connected with the mounting frame 108, the solid block 109 is threadedly connected with the mounting bolt 110, the positioning rack 107 is fixedly installed on the side of the mounting frame 108 away from the solid block 109, the bottom end of the lower transition electrode 102 is designed with a mounting hole, the mounting hole of the lower transition electrode 102 is connected with the lower electrode end of the welding tongs body 101, the top end of the upper transition electrode 103 is designed with a mounting hole, the mounting hole of the upper transition electrode 103 is connected with the upper electrode end of the welding tongs body 101, the top end of the mounting seat 104 is designed with an internal threaded hole, the bottom end of the mounting seat 104 is fixedly connected with the top end of the lower transition electrode 102, the top end of the insulating sleeve 105 is designed with an internal threaded hole, the outer side of the insulating sleeve 105 is designed with an external thread, the external thread of the insulating sleeve 105 is connected with the internal threaded hole of the mounting seat 104, the outer side of the positioning pin 106 is designed with an external thread, the positioning pin 106 is connected with the internal threaded hole of the insulating sleeve 105, the left side of the mounting frame 108 is designed with a mounting groove, the opening ends of the mounting frame 108 are designed with through holes on both sides, the right side of the solid block 109 is designed with a mounting groove, the opening ends of the solid block 109 are designed with connecting holes on both sides, the mounting bolt 110 has a plurality of, the mounting bolt 110 fixes the solid block 109 and the mounting frame 108 outside the bottom end of the mounting seat 104 through the connecting holes of the solid block 109 and the through holes of the mounting frame 108, the top end of the positioning rack 107 is designed with a workpiece positioning groove, the left upper side of the positioning rack 107 is fixedly connected with the right side of the mounting seat 104, the solid block 109 and the mounting frame 108 are installed on the mounting seat 104 through the mounting bolt 110, the workpiece is installed in the workpiece positioning groove of the positioning rack 107 and the positioning pin 106, the projection welding nut is installed in the positioning pin 106, the upper electrode end of the welding tongs body 101 drives the upper transition electrode 103 to press down, the upper transition electrode 103 abuts on the projection welding nut, the current on the upper electrode end of the welding tongs body 101 flows to the lower electrode end of the welding tongs body 101 through the upper transition electrode 103, the projection welding nut, the workpiece, the mounting seat 104 and the lower transition electrode 102,The welding projection of the projection welding nut is heated by the current until the welding projection is crushed, and the workpiece is welded. Under the cooperation of the positioning pin 106 and the positioning frame 107, the inclination angle of the workpiece during positioning is avoided, thereby improving the positioning effect between the workpiece and the projection welding nut.

[0023] Secondly, the mounting screw 111 is threadedly connected with the solid block 109 and the mounting frame 108; the mounting nut 112 is threadedly connected with the mounting screw 111 and abuts against the solid block 109; the mounting screw 111 is connected with the mounting nut 112 through the connecting hole of the solid block 109 and the through hole of the mounting frame 108; the mounting nut 112 abuts against the outside of the solid block 109; the solid block 109 and the mounting frame 108 are connected on the mounting seat 104 through the cooperation of the mounting screw 111 and the mounting nut 112.

[0024] Then, the mounting frame 108 has a through hole 113 located on the side close to the mounting screw 111 and cooperating with the mounting screw 111; the solid block 109 has a connecting hole 114 located on the side close to the mounting screw 111 and cooperating with the mounting screw 111; the through hole 113 has a plurality of through holes 113 located on both sides of the opening end of the mounting block; the connecting hole 114 has a plurality of connecting holes 114 respectively located on both sides of the opening end of the solid block 109; the mounting screw 111 is connected with the mounting nut 112 through the connecting hole 114 and the through hole 113, thereby realizing the connection between the mounting screw 111 and the solid block 109 and the mounting frame 108.

[0025] When the positioning device of the projection welding of the welding tongs is used, the mounting screw 111 is connected with the mounting nut 112 through the connecting hole 114 and the through hole 113, the solid block 109 and the mounting frame 108 are mounted on the mounting seat 104, the workpiece is mounted in the workpiece positioning groove of the positioning frame 107 and the positioning pin 106, the projection nut is mounted in the positioning pin 106, the upper electrode end of the welding tong body 101 drives the upper transition electrode 103 to be pressed down, the upper transition electrode 103 abuts on the projection nut, the current on the upper electrode end of the welding tong body 101 flows to the lower electrode end of the welding tong body 101 through the upper transition electrode 103, the projection nut, the workpiece, the mounting seat 104 and the lower transition electrode 102, the welding projection of the projection nut is heated under the action of the current until the welding projection is crushed, and the workpiece is welded, under the cooperation of the positioning pin 106 and the positioning frame 107, the workpiece is prevented from being inclined in the positioning process, so that the positioning effect of the device on the workpiece and the projection nut is improved.

[0026] The second embodiment of the application is:

[0027] Please refer to Figure 4 , Figure 4 is a structural schematic view of the positioning rod and the positioning cylinder, on the basis of the first embodiment, the positioning assembly further includes a positioning rod 201 and a positioning cylinder 202, and the positioning cylinder 202 has a bushing 203.

[0028] According to the specific embodiment, the positioning rod 201 is inserted into the positioning cylinder 202 by the solid block 109, and then the movement angle between the solid block 109 and the mounting frame 108 is limited, so that the solid block 109 and the mounting frame 108 are conveniently mounted.

[0029] The positioning cylinder 202 is fixedly connected with the mounting frame 108 and located on the side of the mounting frame 108 close to the solid block 109; the positioning rod 201 is slidably connected with the positioning cylinder 202 and fixedly connected with the solid block 109; the opening end of the mounting frame 108 is designed with mounting holes on both sides; the end of the positioning cylinder 202 is designed with insertion holes; the positioning cylinder 202 has multiple; the outer side of the positioning cylinder 202 is fixedly connected with the mounting holes of the mounting frame 108; the positioning rod 201 has multiple; the positioning rod 201 is respectively located on both sides of the opening end of the solid block 109; the outer side of the positioning rod 201 is slidably connected with the insertion holes of the positioning cylinder 202; the solid block 109 drives the positioning rod 201 to be inserted into the positioning cylinder 202, thereby limiting the moving angle between the solid block 109 and the mounting frame 108, so as to facilitate the installation between the solid block 109 and the mounting frame 108.

[0030] Secondly, the positioning cylinder 202 has an insertion hole 203, which is located on the side of the positioning cylinder 202 close to the positioning rod 201 and cooperates with the positioning rod 201; the insertion hole 203 is located on the end of the positioning cylinder 202; the insertion hole 203 is slidably connected with the outer side of the positioning rod 201; the solid block 109 drives the positioning rod 201 to be inserted into the insertion hole 203, thereby realizing the connection between the positioning rod 201 and the positioning cylinder 202.

[0031] When the positioning device for welding tongs projection welding is used, the solid block 109 drives the positioning rod 201 to be inserted into the insertion hole 203, thereby limiting the moving angle between the solid block 109 and the mounting frame 108, so as to facilitate the installation between the solid block 109 and the mounting frame 108.

[0032] The above disclosure is only one or more preferred embodiments of the present application, which cannot limit the scope of the present application. Those skilled in the art can understand that the implementation of all or part of the above-mentioned embodiments and the equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A positioning device for projection welding of welding clamps, comprising a welding clamp body, characterized in that: Also included is a positioning component; The positioning assembly includes a lower transition electrode, an upper transition electrode, a mounting seat, an insulating sleeve, a positioning pin, a positioning frame, a mounting frame, a solid block and a mounting bolt. The lower transition electrode is mounted on the lower electrode arm of the welding clamp body, and the upper transition electrode is mounted on the upper electrode arm of the welding clamp body. The mounting seat is fixedly mounted on a side of the lower transition electrode close to the upper transition electrode. The insulating sleeve is threadedly connected to the mounting seat and is located on a side of the mounting seat away from the lower transition electrode. The positioning pin is threadedly connected to the insulating sleeve and is located on a side of the insulating sleeve away from the mounting seat. The mounting frame is detachably connected to the mounting seat, the mounting bolt is threadedly connected to the mounting frame, the solid block is threadedly connected to the mounting bolt, and the positioning frame is fixedly mounted on a side of the mounting frame away from the solid block.

2. The positioning device for projection welding of welding clamps according to claim 1, characterized in that: The mounting bolt includes a mounting screw and a mounting nut. The mounting screw is threadedly connected to the solid block and to the mounting frame. The mounting nut is threadedly connected to the mounting screw and abuts against the solid block.

3. The positioning device for projection welding of welding clamps according to claim 2, characterized in that: The mounting frame has a through hole, which is located on a side of the mounting frame close to the mounting screw and cooperates with the mounting screw; the solid block has a connecting hole, which is located on a side of the solid block close to the mounting screw and cooperates with the mounting screw.

4. The positioning device for projection welding of welding clamps according to claim 1, characterized in that: The positioning assembly further includes a positioning rod and a positioning cylinder. The positioning cylinder is fixedly connected to the installation frame and is located on a side of the installation frame close to the solid block. The positioning rod is slidably connected to the positioning cylinder and is fixedly connected to the solid block.

5. The positioning device for projection welding of welding clamps according to claim 4, characterized in that: The positioning cylinder has an insertion hole, which is located on a side of the positioning cylinder close to the positioning rod and is matched with the positioning rod.

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