Novel annular part projection welding tool mechanism

Abstract

The utility model relates to a novel annular part projection welding tool mechanism which is applied to a projection welding machine and used for welding a plate and a steel wire ring, the projection welding tool mechanism comprises an upper electrode assembly 100, the upper electrode assembly 100 comprises an upper electrode 110 and a lifting driving mechanism 120, the upper electrode 110 is connected with the lifting driving mechanism 120, and the lifting driving mechanism 120 is connected with the upper electrode 110. The lifting driving mechanism 120 is installed on a machine frame of the projection welding machine and can drive the upper electrode 110 to do lifting motion. Welding of the thin plate and the steel bar ring type product is achieved, the welding quality requirement is met, the product arc welding deformation, the arc welding equipment investment and other cost investments are reduced, and the product quality and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field more specifically, relate to a novel annular part projection welding frock mechanism. BACKGROUND

[0002] The automobile mounting ring part is a common welding part in the automobile body in white, for example, the automobile body safety belt mounting ring product, currently adopts the thin sheet metal and the steel bar bending welding, because the part shape is relatively special and the quality requirement of welding is relatively high, the conventional projection welding electrode cannot realize welding.

[0003] The commonly used welding method is arc welding, and a special welding fixture and an arc welding machine are needed in the welding process, manual arc welding or automatic robot arc welding is usually adopted, a special welding fixture and an automatic arc welding robot are adopted, the equipment investment cost is too high, the equipment maintenance cost is also very high, and a large area is occupied. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a novel annular part projection welding frock mechanism to solve the problems in the above background.

[0005] To solve the above technical problems, the utility model is realized by adopting the following technical scheme:

[0006] A novel annular part projection welding frock mechanism is applied to a projection welding machine and is used for welding between a plate part and a steel wire ring, and the projection welding frock mechanism comprises:

[0007] An upper electrode assembly 100 comprises an upper electrode 110 and a lifting driving mechanism 120, the upper electrode 110 is connected with the lifting driving mechanism 120, and the lifting driving mechanism 120 is installed on the rack of the projection welding machine and can drive the upper electrode 110 to move up and down;

[0008] A positioning mechanism 200 is located below the upper electrode 110, and the positioning mechanism 200 comprises a mounting plate 210 and two steel wire ring positioning blocks 220, the two steel wire ring positioning blocks 220 are oppositely arranged on the mounting plate 210, the opposite end faces of the two steel wire ring positioning blocks 220 have a space for placing a steel wire ring, and the opposite end faces of the two steel wire ring positioning blocks 220 are respectively provided with positioning structures, the positioning structures comprise first positioning parts 221 and second positioning parts 222 which are distributed upwards and downwards, the first positioning part 221 is a semicircular groove formed in the end face of the steel wire ring positioning block 220, and the second positioning part 222 comprises an extension part 223 extending outward from the lower part of the end face of the steel wire ring positioning block 220 and a positioning groove 224 formed in the top face of the extension part 223;

[0009] The lower electrode assembly 300 comprises a pair of lower electrodes 310, the pair of lower electrodes 310 are oppositely arranged and connected with the mounting plate 210, and a positioning pin 311 is arranged on the top surface of the lower electrode 310.

[0010] Further, the spacing between the two steel wire ring positioning blocks 220 is adjustable.

[0011] Further, the steel wire ring positioning block 220 is connected with the mounting plate 210 through a mounting seat 230, a plurality of mounting holes 231 distributed in the up-down direction are formed in the mounting seat 230, and the steel wire ring positioning block 220 is selectively detachably connected with any one of the mounting holes 231.

[0012] Further, the mounting seat 230 and the mounting plate 210 are provided with an insulating pad 240.

[0013] Further, the positioning grooves 224 on the two extension portions 223 are both configured as L-shaped grooves, and the two positioning grooves 224 are oppositely arranged.

[0014] Further, the positioning pin 311 is made of insulating material.

[0015] Further, the spacing between the pair of lower electrodes 310 is adjustable.

[0016] Further, the lower electrode assembly 300 further comprises a water-cooled electrode mounting seat 320, the water-cooled electrode mounting seat 320 is connected to the bottom surface of the mounting plate 210, the lower electrode 310 is mounted on the water-cooled electrode mounting seat 320 and penetrates upwardly through the mounting plate 210.

[0017] Further, the bottom surface of the mounting plate 210 is provided with a profiling mounting groove for mounting the water-cooled electrode mounting seat 320.

[0018] Further, an insulating pad is arranged between the water-cooled electrode mounting seat 320 and the mounting plate 210.

[0019] Compared with the prior art, the utility model has the advantages of:

[0020] The novel annular part projection welding tool mechanism provided by the utility model can precisely position the steel wire ring through the first positioning part and the second positioning part arranged on the two steel wire ring positioning blocks, support the plate piece through the top surface of the pair of lower electrodes, and position the plate piece through the positioning pin on the top surface of the lower electrode. After the plate piece and the steel wire ring are mounted, the lifting driving mechanism drives the upper electrode to move downwardly and contact the plate piece, the steel wire ring and the lower electrode, the upper electrode and the lower electrode heat the contact surface between the plate piece and the steel wire ring through current, and the welding of the plate piece and the steel wire ring is realized.

[0021] The novel annular part projection welding tool mechanism provided by the utility model can adjust the spatial positions of the two steel wire ring positioning blocks and the pair of lower electrodes, meets the welding requirements of plate parts and steel wire rings of different specifications and sizes, and improves the applicability of the tool.

[0022] The novel annular part projection welding tool mechanism provided by the utility model is applied to a projection welding machine, realizes the welding of thin plate and steel ring products, meets the welding quality requirements, reduces product arc welding deformation and arc welding equipment investment and other cost inputs, and improves product quality and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further described in connection with the drawings:

[0024] Figure 1 It is a structure schematic view of plate part and steel wire ring in an embodiment;

[0025] Figure 2 It is a structure schematic view of a novel annular part projection welding tool mechanism in an embodiment;

[0026] Figure 3 It is a structure schematic view of a positioning mechanism in an embodiment;

[0027] Figure 4 It is an explosion view of the positioning mechanism in an embodiment;

[0028] Figure 5 It is a structure schematic view of a steel wire ring positioning block in an embodiment;

[0029] Figure 6 It is a structure schematic view of the steel wire ring positioning block and steel wire ring installation in an embodiment;

[0030] Figure 7 It is a structure schematic view of a lower electrode assembly in an embodiment;

[0031] Figure 8 It is an explosion view of the lower electrode assembly in an embodiment;

[0032] Figure 9 It is a structure schematic view of the lower electrode and plate part installation in an embodiment;

[0033] Figure 10 It is a structure schematic view of plate part, steel wire ring installation process in an embodiment;

[0034] Figure 11 It is a structure schematic view of welding process in an embodiment;

[0035] 100. upper electrode assembly, 110. upper electrode, 120. lifting drive mechanism;

[0036] 200. positioning mechanism, 210. mounting plate, 220. wire ring positioning block, 221. first positioning portion, 222. second positioning portion, 223. extension portion, 224. positioning groove, 230. mounting seat, 231. mounting hole, 232. strip-shaped hole, 240. insulating pad;

[0037] 300. lower electrode assembly, 310. lower electrode, 311. positioning pin, 312. guide groove, 320. water-cooled electrode mounting seat, 321. connecting hole, 322. guide key;

[0038] 400. plate, 410. through hole, 420. positioning hole;

[0039] 500. wire ring;

[0040] 600. rack. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the utility model will be described in detail below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0042] The embodiment provides a novel projection welding tool mechanism for annular parts, which is applied to a projection welding machine and is used for welding between a plate 400 and a wire ring 500, for example, a product such as an automobile body safety belt mounting ring, as shown in the figure. Figure 1 As shown in the figure, two through holes 410 are formed in the main body of the plate 400, and two positioning holes 420 are formed in the edges of the plate 400. The main body of the wire ring 500 is substantially in a U-shaped structure. After the main body of the wire ring 500 passes through the two through holes 410 on the plate 400, the main body of the wire ring 500 is bent outward and welded to the main body of the plate 400.

[0043] Referring to Figures 2 to 10 , the projection welding tool mechanism comprises an upper electrode assembly 100, a positioning mechanism 200 and a lower electrode assembly 300.

[0044] The upper electrode assembly 100 comprises an upper electrode 110 and a lifting driving mechanism 120. The upper electrode 110 is connected to the lifting driving mechanism 120. The lifting driving mechanism 120 is installed on a rack 600 of the projection welding machine and can drive the upper electrode 110 to move up and down.

[0045] The positioning mechanism 200 is located below the upper electrode 110 and is used for positioning the steel wire ring 500, and the positioning mechanism 200 comprises a mounting plate 210 and two steel wire ring positioning blocks 220; the two steel wire ring positioning blocks 220 are oppositely arranged on the mounting plate 210, and the opposite end faces of the two steel wire ring positioning blocks 220 have a space for placing the steel wire ring 500, and the opposite end faces of the two steel wire ring positioning blocks 220 are respectively provided with positioning structures, and the positioning structures comprise first positioning portions 221 and second positioning portions 222 which are arranged in an up-down manner: the first positioning portions 221 are semicircular grooves formed in the end faces of the steel wire ring positioning blocks 220 and can be used for positioning the side edges of the steel wire ring 500; and the second positioning portions 222 are composed of extension portions 223 extending outward from the lower parts of the end faces of the steel wire ring positioning blocks 220 and positioning grooves 224 formed in the top faces of the extension portions 223 and can be used for positioning the bottom edges of the steel wire ring 500.

[0046] In some specific embodiments, the positioning grooves 224 on the two extension portions 223 are all configured as L-shaped grooves, and the two positioning grooves 224 are oppositely arranged, and by configuring the positioning grooves 224 as L-shaped grooves, the size of the steel wire ring positioning blocks 220 can be reduced, and the placement of the steel wire ring 500 is facilitated.

[0047] In this embodiment, the two steel wire ring positioning blocks 220 are respectively connected with the mounting plate 210 through one mounting seat 230, and an insulating pad is arranged between the mounting seat 230 and the mounting plate 210.

[0048] By arranging the mounting seat 230, the spatial positions of the steel wire ring positioning blocks 220 in the up-down, left-right and front-rear directions can be adjusted, and specifically: a plurality of mounting holes 231 distributed in the up-down direction are formed in the mounting seat 230, the steel wire ring positioning blocks 220 are selectively detachably connected with any one of the mounting holes 231 through fasteners such as bolts, the position adjustment of the steel wire ring positioning blocks 220 in the up-down direction can be realized by selecting the mounting holes 231 with different heights; since the steel wire ring positioning blocks 220 are connected with the mounting seat 230 through bolts, the spacing between the two steel wire ring positioning blocks 220 can be adjusted by adjusting the tightening force of the connecting bolts or by adding a gasket between the steel wire ring positioning blocks 220 and the mounting seat 230, so that the position adjustment of the steel wire ring positioning blocks 220 in the left-right direction can be realized; by arranging the holes used for connecting the mounting seat 230 with the mounting plate 210 as strip-shaped holes 232 extending in the front-rear direction, the front-rear direction position of the mounting seat 230 on the mounting plate 210 can be changed, and thus the position adjustment of the steel wire ring positioning blocks 220 in the front-rear direction can be realized.

[0049] By adjusting the spatial position of the steel wire ring positioning block 220 in the up-down, left-right and front-back directions, the positioning requirements of steel wire rings 500 of different sizes and different offset angles can be met.

[0050] The lower electrode assembly 300 comprises a pair of lower electrodes 310 and a water-cooled electrode mounting base 320 connected to the bottom surface of the mounting plate 210, and an insulating pad is arranged between the water-cooled electrode mounting base 320 and the mounting plate 210. In order to facilitate the positioning and mounting of the water-cooled electrode mounting base 320, a mounting groove shaped like the water-cooled electrode mounting base 320 is formed in the bottom surface of the mounting plate 210. A pair of the lower electrodes 310 are arranged in a cross shape with the two steel wire ring positioning blocks 220, and the lower electrodes 310 are oppositely mounted on the water-cooled electrode mounting base 320 and pass through the mounting plate 210 upwards. The top surface of the lower electrode 310 is the contact surface with the plate member 400, and a positioning pin 311 is arranged on the top surface of the lower electrode 310. The positioning pin 311 cooperates with the positioning hole 420 around the plate member 400 to realize the positioning of the plate member 400. The positioning pin 311 is made of an insulating material such as ceramic.

[0051] In this embodiment, in order to meet the positioning requirements of plate members 400 of different specifications and sizes, the pair of lower electrodes 310 are arranged in a structure with adjustable spacing. Specifically, a plurality of connection holes 321 for connecting the lower electrodes 310 are arranged on the water-cooled electrode mounting base 320 and are spaced apart in the front-back direction. Therefore, the lower electrodes 310 can be connected to any of the connection holes 321, thereby changing the positions of the lower electrodes 310 in the front-back direction and realizing the spacing adjustment between the pair of lower electrodes 310. The water-cooled electrode mounting base 320 is also provided with a guide key 322, and a guide groove 312 is formed in the bottom surface of the lower electrode 310. The cooperation of the guide key 322 and the guide groove 312 can ensure the accurate position of the lower electrode 310.

[0052] The working principle of the new type of ring-shaped part projection welding tool mechanism provided in this embodiment is as follows:

[0053] The steel wire ring 500 is positioned by the two steel wire ring positioning blocks 220, the plate member 400 is supported by the pair of lower electrodes 310, and the plate member 400 is positioned by the positioning pin 311 on the lower electrode 310. After the plate member 400 and the steel wire ring 500 are installed, the lifting drive mechanism 120 drives the upper electrode 110 to move downwards to contact the plate member 400, the steel wire ring 500 and the lower electrode 310. The upper electrode 110 and the lower electrode 310 heat the contact surface between the plate member 400 and the steel wire ring 500 by electric current, thereby realizing the welding of the plate member 400 and the steel wire ring 500.

[0054] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0055] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new type of projection welding tooling mechanism for ring-shaped parts, applied to a projection welding machine, for welding between a plate part and a steel wire ring, characterized in that, The projection welding tool mechanism comprises: An upper electrode assembly (100) comprising an upper electrode (110) and a lifting driving mechanism (120), the upper electrode (110) being connected with the lifting driving mechanism (120), the lifting driving mechanism (120) being installed on a rack of a projection welding machine and capable of driving the upper electrode (110) to move up and down; A positioning mechanism (200) located below the upper electrode (110), the positioning mechanism (200) comprising a mounting plate (210) and two steel wire ring positioning blocks (220), the two steel wire ring positioning blocks (220) being oppositely arranged and mounted on the mounting plate (210), the two steel wire ring positioning blocks (220) having a space for placing a steel wire ring between opposite end faces of the two steel wire ring positioning blocks (220), and the opposite end faces of the two steel wire ring positioning blocks (220) further comprising positioning structures respectively, the positioning structures comprising first positioning portions (221) and second positioning portions (222) arranged in an up-down manner, the first positioning portions (221) being semicircular grooves formed on the end faces of the steel wire ring positioning blocks (220), and the second positioning portions (222) comprising extension portions (223) extending outward from lower portions of the end faces of the steel wire ring positioning blocks (220) and positioning grooves (224) formed on top faces of the extension portions (223). A lower electrode assembly (300) comprising a pair of lower electrodes (310), the pair of lower electrodes (310) being oppositely arranged and connected with the mounting plate (210), and the lower electrodes (310) further comprising positioning pins (311) arranged on top faces of the lower electrodes (310).

2. A novel projection welding tooling mechanism for ring-shaped parts according to claim 1, characterized in that, The spacing between the two steel wire ring positioning blocks (220) is adjustable.

3. The novel projection welding tooling mechanism for ring-shaped parts according to claim 1, characterized in that, The steel wire ring positioning blocks (220) are connected with the mounting plate (210) through mounting seats (230), the mounting seats (230) comprising a plurality of mounting holes (231) arranged in an up-down direction, and the steel wire ring positioning blocks (220) being selectively and detachably connected with any one of the mounting holes (231).

4. The novel projection welding tooling mechanism for ring-shaped parts according to claim 3, characterized in that, Insulating pads are arranged between the mounting seats (230) and the mounting plate (210).

5. The novel projection welding tooling mechanism for ring-shaped parts according to claim 1, characterized in that, The positioning grooves (224) on the two extension portions (223) are both configured as L-shaped grooves, and the two positioning grooves (224) are oppositely arranged.

6. A novel projection welding tooling mechanism for ring-shaped parts according to claim 1, characterized in that, The positioning pins (311) are made of insulating materials.

7. A new type of ring part projection welding tooling mechanism according to claim 1, characterized in that, The spacing between the pair of lower electrodes (310) is adjustable.

8. A new type of ring part projection welding tooling mechanism according to claim 1, characterized in that, The lower electrode assembly (300) further comprises a water-cooled electrode mounting seat (320) connected to a bottom face of the mounting plate (210), and the pair of lower electrodes (310) are installed on the water-cooled electrode mounting seat (320) and pass through the mounting plate (210) upwardly.

9. A novel projection welding tooling mechanism for ring-shaped parts according to claim 8, characterized in that, The bottom face of the mounting plate (210) is provided with a profiling mounting groove for mounting the water-cooled electrode mounting seat (320).

10. The novel projection welding tooling mechanism for ring-shaped parts according to claim 9, characterized in that, Insulating pads are arranged between the water-cooled electrode mounting seat (320) and the mounting plate (210).

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