CN219924855U - Jack top hook subassembly welding frock - Google Patents
Jack top hook subassembly welding frock Download PDFInfo
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- CN219924855U CN219924855U CN202320839867.0U CN202320839867U CN219924855U CN 219924855 U CN219924855 U CN 219924855U CN 202320839867 U CN202320839867 U CN 202320839867U CN 219924855 U CN219924855 U CN 219924855U
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- 238000003466 welding Methods 0.000 title claims abstract description 114
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 239000000498 cooling water Substances 0.000 claims description 32
- 238000003825 pressing Methods 0.000 claims description 17
- 230000007246 mechanism Effects 0.000 claims description 12
- 229920001342 Bakelite® Polymers 0.000 claims description 11
- 239000004637 bakelite Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- QZLJNVMRJXHARQ-UHFFFAOYSA-N [Zr].[Cr].[Cu] Chemical compound [Zr].[Cr].[Cu] QZLJNVMRJXHARQ-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
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Abstract
The utility model relates to a jack top hook assembly welding tool, which comprises a tool main body and a top hook assembly, wherein the tool main body comprises an upper electrode part, a lower electrode part and a water cooling system, the upper electrode part is arranged on an upper platform working surface of a projection welding machine, the upper electrode part comprises an upper electrode seat and an upper electrode, the upper end surface of the upper electrode seat is in contact with the upper platform working surface of the projection welding machine, two countersunk head mounting holes and two countersunk head through holes are formed in the upper electrode seat, the upper electrode seat passes through the countersunk head mounting holes through socket head screws to be fixedly locked with T-shaped nuts of the upper platform working surface, a waist-shaped groove is formed below the upper electrode seat, the width of the waist-shaped groove is consistent with that of the upper electrode, the upper electrode is fixed in the waist-shaped groove, and the upper electrode passes through the countersunk head through holes through screws to be fixed with the upper electrode seat; the lower electrode part is arranged on the working surface of the lower platform of the projection welding machine and comprises a base and a lower electrode assembly, and the bottom surface of the base is contacted with the working surface of the lower platform of the projection welding machine.
Description
Technical Field
The utility model relates to the field of projection welding tools, in particular to a jack hook assembly welding tool.
Background
The jack has the characteristics of light and quick use, is a necessary vehicle-mounted product in various domestic automobile factories at present, when the jack is used for lifting an automobile, a part or an assembly of which the upper end is in direct contact with an automobile chassis is generally called a top hook or a top hook assembly, a groove matched with a chassis lifting bearing part is formed in the surface of the jack, the groove is required to have enough strength, and thus the groove of the top hook or the top hook assembly can play a role of skid resistance during lifting, so that the jack is ensured to be safe and reliable in the lifting process. Part of the existing jack top hook component is manufactured through a projection welding process, wherein two projection welding convex points on the bottom surface of the supporting plate and the two vertical surfaces of the two sides of the top hook are subjected to projection welding simultaneously, and the requirements on high welding strength, welding position size and surface appearance are met. The existing projection welding mode of the top hook component is that a welding fixture is mounted on a special welding machine, a top hook is firstly placed on the fixture for positioning, then a supporting plate is visually placed at the upper end of the top hook, during projection welding, an upper electrode is vertically pressed on the upper surface of the supporting plate, and two electrodes which move horizontally left and right below are respectively pressed on the left side surface and the right side surface of the top hook, so that projection welding of the top hook component is completed, and because the two electrodes which move horizontally left and right below are needed, the special welding machine is needed, the comprehensive utilization of production equipment is not facilitated, equipment investment is needed to be additionally increased, the supporting plate is visually placed at present, the welding position is unstable in size, and in addition, the two electrodes which move horizontally left and right below are pressed on the appearance surfaces of the two sides of the top hook are sometimes scraped due to large electrode indentation, and the appearance is affected. Therefore, a jack top hook assembly welding tool which can adapt to a conventional vertical projection welding machine and has the advantages of accurately positioning a top hook and a supporting plate and meeting projection welding requirements is needed.
Disclosure of Invention
Aiming at the problems existing in the prior art, the utility model provides a jack hook component welding tool for solving at least one technical problem.
The technical scheme of the utility model is as follows: the utility model provides a jack top hook subassembly welding frock, includes frock main part and top hook subassembly, its characterized in that, the frock main part includes upper electrode part, lower electrode part and water cooling system, upper electrode part is installed on the upper platform working face of projection welding machine, upper electrode part includes upper electrode holder and upper electrode, the up end of upper electrode holder with the upper platform working face contact of projection welding machine, two countersunk head mounting holes and two countersunk head through-holes have been seted up on the upper electrode holder, upper electrode holder passes through hexagon socket head screw countersunk head mounting hole and the fixed locking of T type nut of upper platform working face, waist type groove has been seted up to the below of upper electrode holder, waist type groove's width is unanimous with the width of upper electrode, upper electrode is fixed in waist type inslot, upper electrode passes through the countersunk head through-hole with upper electrode holder is fixed through the screw;
the lower electrode component is mounted on a lower platform working surface of the projection welding machine and comprises a base and a lower electrode assembly, the bottom surface of the base is in contact with the lower platform working surface of the projection welding machine, four mounting and fixing bolt holes are formed in the base, the lower electrode component passes through the four mounting and fixing bolt holes in the base through socket head cap screws and is fixedly locked with T-shaped nuts of the lower platform working surface, the lower electrode assembly comprises a lower electrode seat, two lower electrodes, a square pressing plate and a pressing screw, the lower electrode seat is fixed with the center of the base through two connecting screws, the lower electrode seat is in a convex structure, grooves for mounting auxiliary positioning blocks are formed in the front side and the rear side of the lower electrode seat respectively, round through holes for mounting a supporting plate elastic positioning mechanism are formed in the middle of the lower electrode seat, the square pressing plate is respectively fixed on the left side and the right side of the lower electrode seat, and the lower electrode passes through the square pressing plate through the pressing screw and is connected with the lower electrode seat;
the water cooling system comprises an upper cooling water circulation channel and a lower cooling water circulation channel, the upper cooling water circulation channel is arranged in the upper electrode holder, the upper cooling water circulation channel comprises an upper water inlet nozzle and an upper water outlet nozzle, the upper water inlet nozzle and the upper water outlet nozzle are respectively in sealing connection with a left end water inlet of the upper electrode holder and a right end water outlet of the upper electrode holder through threads, the lower cooling water circulation channel is arranged in the lower electrode holder, and is close to the installation position of the lower electrode, the lower cooling water circulation channel comprises a lower water inlet nozzle and a lower water outlet nozzle, and the lower water inlet nozzle and the lower water outlet nozzle are respectively in sealing connection with a front left end water inlet of the lower electrode holder and a front right end water outlet of the lower electrode holder through threads.
The tool can work on a conventional general welding machine by changing the contact positions of the two lower electrodes, has the characteristic that both the top hook and the supporting plate can be accurately and reliably positioned, has a good heat dissipation structure, has longer service lives for the upper electrode and the lower electrode, can ensure the projection welding quality of products, reduces the scrapping of parts and reduces the production cost. And during projection welding, the heat generated by the lower electrode of the upper electrode is taken away in time by the circulating cooling of cooling water, so that the welding quality is ensured.
Further preferably, the lower end of the upper electrode is provided with a notch with a downward opening, the top hook and the supporting plate are welded and connected through projection welding convex points, the projection welding convex points are positioned on the vertical planes of the two sides of the top hook and the bottom surface of the supporting plate, and the two sides of the lower end of the upper electrode are positioned above the projection welding convex points.
According to the utility model, by optimizing the structure of the upper electrode, the lower end of the upper electrode is manufactured into the two-side flat middle opening, namely the inverted concave shape, so that the welding requirement of convex welding of the convex points at the two sides can be met, and meanwhile, the upper electrode can be conveniently replaced in a fixing mode.
Further preferably, the lower electrode part further comprises a top hook positioning assembly, a supporting plate positioning assembly, an upper insulating plate, an insulating sleeve and a lower insulating plate, the top hook positioning assembly comprises a top hook cushion block, a top hook positioning block, locking screws, fixing screws and auxiliary positioning blocks, the top hook cushion blocks are arranged at the front ends of the left side and the right side of the lower electrode part respectively, the top hook cushion blocks sequentially penetrate through the lower insulating plate, the insulating sleeve, the base and the upper insulating plate to be fixed through the fixing screws, the top hook positioning block is provided with two, waist-shaped holes are formed in the top hook positioning block, the top hook positioning block penetrates through the waist-shaped holes to be respectively fixed at the upper ends of the left top hook cushion block and the right top hook cushion block, the auxiliary positioning blocks are provided with two, the auxiliary positioning blocks are arranged in grooves in the front side and the rear side of the lower electrode base, and the auxiliary positioning blocks are auxiliary positioning blocks made of bakelite plates.
The auxiliary positioning block prevents the deformation of the side edge of the top hook in the projection welding process, and prevents the spark distribution caused by the conductive contact between the side edge of the top hook and the lower electrode seat in the projection welding process. The top hook positioning block is used for positioning the top hook in the front-back direction and the left-right direction. The kidney-shaped hole is convenient for adjusting the relative positioning size of the top hook in the left-right direction.
Further preferably, the pallet positioning assembly comprises pallet cushion blocks, pallet positioning blocks and an elastic positioning mechanism, the pallet cushion blocks are two, the pallet cushion blocks are respectively located at the rear ends of the left side and the right side of the lower electrode part, the pallet cushion blocks pass through fixing screws to sequentially penetrate through a lower insulating plate, an insulating sleeve, a base and an upper insulating plate to be fixed, the pallet positioning blocks are three, waist-shaped holes are formed in the pallet positioning blocks, and the pallet positioning blocks pass through locking screws to penetrate through the waist-shaped holes to be respectively fixed at the upper ends of the left and the right pallet cushion blocks. The supporting plate positioning blocks are used for positioning the supporting plates in the front-back direction and the left-right direction. The kidney-shaped holes are convenient for adjusting the relative positioning size of the supporting plate in the left-right direction.
Further preferably, the elastic positioning mechanism comprises a positioning guide sleeve, a rectangular spring, an adjusting screw and a supporting plate positioning cap, the positioning guide sleeve is matched with a vertical through hole in the middle of the lower electrode seat, the upper end of the rectangular spring penetrates through an inner hole in the lower end of the positioning guide sleeve, the bottom of the rectangular spring is in contact with the upper surface of the base, the adjusting screw penetrates through the positioning guide sleeve and the rectangular spring to be in threaded connection with the base, the supporting plate positioning cap is positioned at the upper end of the positioning guide sleeve, the supporting plate positioning cap is in interference tight fit with the positioning guide sleeve, and the rectangular spring is in a precompression deformation structure.
In the projection welding process, the supporting plate positioning cap and the positioning guide sleeve move downwards along with the downward pressing of the supporting plate by the upper electrode, the rectangular spring is further compressed, after projection welding is finished, the upper electrode part returns to the initial position along with the upper platform of the projection welding machine, the top hook component after projection welding is taken away, and the supporting plate positioning cap and the positioning guide sleeve also return to the initial positioning position under the rebound action of the rectangular spring.
Further preferably, a round through hole is formed in the middle of the supporting plate positioning cap, and the supporting plate positioning cap is a positioning cap made of bakelite plates.
The round through hole is used for inserting an inner hexagonal wrench, the supporting plate positioning cap is used for positioning the supporting plate in the vertical direction, the initial height of the supporting plate positioning cap can be finely adjusted by rotating the adjusting screw through the inner hexagonal wrench, the relative positioning size of the supporting plate and the top hook in the vertical direction can be finely adjusted, and the supporting plate positioning cap is made of an electric wood plate with insulativity, so that the supporting plate is insulated from the lower electrode seat.
Further preferably, the upper insulating plate is provided with two, the upper insulating plate is located the upper end left and right sides of base, the insulating cover is provided with ten, the insulating cover is located in set screw's the screw, the lower insulating plate is provided with two, the lower insulating plate is located in two square grooves about the lower tip of base, upper insulating plate, insulating cover and lower insulating plate all adopt the bakelite plate to make.
Because the bakelite plate has the characteristics of insulation, no static electricity, wear resistance, high temperature resistance, good mechanical strength and the like, the insulation between the top hook positioning component and the supporting plate positioning component and the electrode component can be ensured, and the spark and the flow distribution can not be generated due to conduction, so that the good working performance and the service life of the projection welding tool are ensured.
Further preferably, the water cooling system further comprises a cooling water supply pipeline and a cooling water recovery pipeline, the upper water inlet nozzle and the lower water inlet nozzle are connected with the cooling water supply pipeline, and the upper water outlet nozzle and the lower water outlet nozzle are connected with the cooling water recovery pipeline.
Further preferably, the upper electrode and the lower electrode are both electrodes made of chromium-zirconium-copper. The electrode achieves good balance of four performance indexes of the welding electrode: excellent conductivity, high-temperature mechanical property with excellent welding quality, wear resistance and higher hardness and strength are obtained, so that the electrode is ensured to be difficult to wear, the service life is prolonged, the cost is reduced, the electrode tip is ensured to be difficult to deform and crush when working under certain pressure, and the welding quality is ensured.
Further preferably, the upper ends of the top hook positioning block and the supporting plate positioning block are provided with guiding slopes. The parts are convenient to place with the top hooks and the supporting plates.
Further preferably, the upper electrode holder and the lower electrode holder are both made of red copper. The red copper has good electrical conductivity and thermal conductivity, so that the upper electrode seat and the lower electrode seat have good current conductivity.
Further preferably, the rectangular spring is made of 50CrVA light-load rectangular die spring. Has the characteristics of small volume, precise rebound, high temperature resistance and long service life.
Compared with the prior art, the welding tool disclosed by the utility model is in linkage control with a universal projection welding machine during working, and an operator can accurately and reliably position the top hook and the supporting plate by using the tool, and then projection welding is finished. The whole operation process is convenient, simple and safe. The electrode is convenient to replace, and the inside of the upper electrode seat and the lower electrode seat are respectively provided with a special cooling water circulation channel, so that the upper electrode and the lower electrode have longer service lives, and through selecting relevant part materials for use, other parts such as an electrode assembly and a positioning mechanism are completely insulated, so that the stability of projection welding current is ensured, the projection welding strength and the position size stability of a product are ensured, the defect that the appearance of two sides of a top hook is provided with indentations is avoided, the scrapping of the parts is reduced, a special projection welding machine is not needed, and the production cost is reduced.
Drawings
Fig. 1 is a schematic perspective view of the assembly of the present utility model.
Fig. 2 is an exploded view of the upper electrode assembly of the present utility model.
Fig. 3 is an exploded view of the lower electrode assembly of the present utility model.
Fig. 4 is an assembled perspective view of the lower electrode assembly of the present utility model.
Fig. 5 is a schematic view of the placement of the top hooks of the lower electrode assembly of the present utility model.
Fig. 6 is a schematic view of the placement of the top hooks and pallet of the lower electrode assembly of the present utility model.
Fig. 7 is a cross-sectional view of a lower electrode assembly of the present utility model.
Fig. 8 is an exploded view of the top hook assembly of the present utility model.
Reference numerals and components referred to in the drawings are as follows:
11. upper electrode base, 12, upper electrode, 13, upper water inlet nozzle, 14, upper water outlet nozzle, 111, waist-shaped groove, 112, countersunk through hole, 113, countersunk mounting hole, 114, upper end face of upper electrode base, 2, base, 21, bottom face of base, 22, mounting fixing bolt hole, 31, top hook cushion block, 32, top hook positioning block, 33, locking screw, 34, fixing screw, 35, auxiliary positioning block, 41, support plate cushion block, 42, support plate positioning block, 43, positioning guide sleeve, 44, rectangular spring, 45, adjusting screw, 46, support plate positioning cap, 51, lower electrode base, 511, lower cooling water circulation channel, 52, lower electrode, 53, angle square pressing plate, 54, pressing screw, 55, lower water inlet nozzle, 56, lower water outlet nozzle, 57, connecting screw, 6, upper insulating plate, 7, insulating sleeve, 8, lower insulating plate, 91, top hook, 92, support plate, 911 and projection welding.
Detailed Description
The utility model is further described below with reference to examples and with reference to the accompanying drawings.
Example 1
Referring to fig. 1-8, a jack top hook assembly welding fixture comprises a fixture main body and a top hook assembly, wherein the fixture main body comprises an upper electrode part, a lower electrode part and a water cooling system, the upper electrode part is arranged on an upper platform working surface of a projection welding machine, the upper electrode part comprises an upper electrode seat 11 and an upper electrode 12, an upper end surface 114 of the upper electrode seat is in contact with the upper platform working surface of the projection welding machine, two countersunk head mounting holes 113 and two countersunk head through holes 112 are formed in the upper electrode seat, the upper electrode seat is fixedly locked with a T-shaped nut of the upper platform working surface through socket head cap screws, a waist-shaped groove 111 is formed below the upper electrode seat, the width of the waist-shaped groove is consistent with that of the upper electrode, the upper electrode is fixed in the waist-shaped groove, and the upper electrode passes through the countersunk head through holes through screws to be fixed with the upper electrode seat;
the lower electrode part is arranged on the lower platform working surface of the projection welding machine, the lower electrode part comprises a base 2 and a lower electrode assembly, the bottom surface 21 of the base is in contact with the lower platform working surface of the projection welding machine, four mounting and fixing bolt holes 22 are formed in the base, the lower electrode assembly comprises a lower electrode seat 51, two lower electrodes 52, an angle square pressing plate 53 and a compression screw 54, the lower electrode seat is fixed with the center of the base through the two connecting screws 57 and is in a convex structure, grooves for mounting auxiliary positioning blocks 35 are formed in the front side and the rear side of the lower electrode seat respectively, a circular through hole for mounting a supporting plate elastic positioning mechanism is formed in the middle of the lower electrode seat, the angle square pressing plates are respectively fixed on the left side and the right side of the lower electrode seat, and the lower electrode passes through the angle square pressing plates through the compression screw to be connected with the lower electrode seat;
the water cooling system comprises an upper cooling water circulation channel and a lower cooling water circulation channel, the upper cooling water circulation channel is arranged in the upper electrode seat, the upper cooling water circulation channel comprises an upper water inlet nozzle 13 and an upper water outlet nozzle 14, the upper water inlet nozzle and the upper water outlet nozzle are respectively in sealing connection with a left end water inlet of the upper electrode seat and a right end water outlet of the upper electrode seat through threads, the lower cooling water circulation channel is arranged in the lower electrode seat, the lower cooling water circulation channel 511 is close to the installation position of the lower electrode, the lower cooling water circulation channel comprises a lower water inlet nozzle 55 and a lower water outlet nozzle 56, and the lower water inlet nozzle and the lower water outlet nozzle are respectively in sealing connection with a front left end water inlet of the lower electrode seat and a front right end water outlet of the lower electrode seat through threads.
The tool can work on a conventional general welding machine by changing the contact positions of the two lower electrodes, has the characteristic that both the top hook and the supporting plate can be accurately and reliably positioned, has a good heat dissipation structure, has longer service lives for the upper electrode and the lower electrode, can ensure the projection welding quality of products, reduces the scrapping of parts and reduces the production cost. And during projection welding, the heat generated by the lower electrode of the upper electrode is taken away in time by the circulating cooling of cooling water, so that the welding quality is ensured.
Further preferably, the lower end of the upper electrode is provided with a notch with a downward opening, the top hook and the supporting plate 92 are welded and connected through projection welding convex points 911, the projection welding convex points are positioned on the vertical surfaces of the two sides of the top hook and the bottom surface of the supporting plate, and the two sides of the lower end of the upper electrode are positioned above the projection welding convex points.
According to the utility model, by optimizing the structure of the upper electrode, the lower end of the upper electrode is manufactured into the two-side flat middle opening, namely the inverted concave shape, so that the welding requirement of convex welding of the convex points at the two sides can be met, and meanwhile, the upper electrode can be conveniently replaced in a fixing mode.
Further preferably, the lower electrode part further comprises a top hook positioning assembly, a supporting plate positioning assembly, an upper insulating plate 6, an insulating sleeve 7 and a lower insulating plate 8, wherein the top hook positioning assembly comprises a top hook cushion block 31, a top hook positioning block 32, locking screws 33, fixing screws 34 and auxiliary positioning blocks 35, the top hook cushion block is provided with two top hook cushion blocks, the top hook cushion blocks are respectively positioned at the front ends of the left side and the right side of the lower electrode part, the top hook cushion blocks sequentially penetrate through the lower insulating plate, the insulating sleeve, the base and the upper insulating plate to be fixed through the fixing screws, the top hook positioning block is provided with two top hook cushion blocks, the top hook positioning block is respectively fixed at the upper ends of the left top hook cushion block and the right top hook cushion block through the locking screws, the auxiliary positioning blocks are provided with two auxiliary positioning blocks, the auxiliary positioning blocks are arranged in grooves on the front side and the rear side of the lower electrode part, and the auxiliary positioning blocks are auxiliary positioning blocks made of bakelite plates.
The auxiliary positioning block prevents the deformation of the side edge of the top hook in the projection welding process, and prevents the spark distribution caused by the conductive contact between the side edge of the top hook and the lower electrode seat in the projection welding process. The top hook positioning block is used for positioning the top hook in the front-back direction and the left-right direction. The kidney-shaped hole is convenient for adjusting the relative positioning size of the top hook in the left-right direction.
Further preferably, the pallet positioning assembly comprises pallet cushion blocks 41, pallet positioning blocks 42 and an elastic positioning mechanism, wherein two pallet cushion blocks are arranged, the pallet cushion blocks are respectively positioned at the rear ends of the left side and the right side of the lower electrode part, the pallet cushion blocks sequentially penetrate through the lower insulating plate, the insulating sleeve, the base and the upper insulating plate through fixing screws to be fixed, the pallet positioning blocks are provided with three, waist-shaped holes are formed in the pallet positioning blocks, and the pallet positioning blocks are respectively fixed at the upper ends of the left and the right pallet cushion blocks through the waist-shaped holes through locking screws. The supporting plate positioning blocks are used for positioning the supporting plates in the front-back direction and the left-right direction. The kidney-shaped holes are convenient for adjusting the relative positioning size of the supporting plate in the left-right direction.
Further preferably, the elastic positioning mechanism comprises a positioning guide sleeve 43, a rectangular spring 44, an adjusting screw 45 and a supporting plate positioning cap 46, wherein the positioning guide sleeve is matched with a vertical through hole in the middle of the lower electrode seat, the upper end of the rectangular spring penetrates through an inner hole in the lower end of the positioning guide sleeve, the bottom of the rectangular spring is in contact with the upper surface of the base, the adjusting screw penetrates through the positioning guide sleeve and the rectangular spring to be in threaded connection with the base, the supporting plate positioning cap is positioned at the upper end of the positioning guide sleeve, the supporting plate positioning cap is in interference tight fit with the positioning guide sleeve, and the rectangular spring is in a precompression deformation structure.
In the projection welding process, the supporting plate positioning cap and the positioning guide sleeve move downwards along with the downward pressing of the supporting plate by the upper electrode, the rectangular spring is further compressed, after projection welding is finished, the upper electrode part returns to the initial position along with the upper platform of the projection welding machine, the top hook component after projection welding is taken away, and the supporting plate positioning cap and the positioning guide sleeve also return to the initial positioning position under the rebound action of the rectangular spring.
Further preferably, a round through hole is formed in the middle of the supporting plate positioning cap, and the supporting plate positioning cap is a positioning cap made of bakelite plates.
The round through hole is used for inserting an inner hexagonal wrench, the supporting plate positioning cap is used for positioning the supporting plate in the vertical direction, the initial height of the supporting plate positioning cap can be finely adjusted by rotating the adjusting screw through the inner hexagonal wrench, the relative positioning size of the supporting plate and the top hook in the vertical direction can be finely adjusted, and the supporting plate positioning cap is made of an electric wood plate with insulativity, so that the supporting plate is insulated from the lower electrode seat.
Further preferably, the upper insulating plate is provided with two, and the upper insulating plate is located the upper end left and right sides of base, and the insulating cover is equipped with ten, and the insulating cover is located set screw's screw, and the lower insulating plate is equipped with two, and the lower insulating plate is located the left and right sides of the lower tip of base two square grooves, and upper insulating plate, insulating cover and lower insulating plate all adopt the bakelite plate to make.
Because the bakelite plate has the characteristics of insulation, no static electricity, wear resistance, high temperature resistance, good mechanical strength and the like, the insulation between the top hook positioning component and the supporting plate positioning component and the electrode component can be ensured, and the spark and the flow distribution can not be generated due to conduction, so that the good working performance and the service life of the projection welding tool are ensured.
Further preferably, the water cooling system further comprises a cooling water supply pipeline and a cooling water recovery pipeline, the upper water inlet nozzle and the lower water inlet nozzle are connected with the cooling water supply pipeline, and the upper water outlet nozzle and the lower water outlet nozzle are connected with the cooling water recovery pipeline.
Further preferably, the upper electrode and the lower electrode are both electrodes made of chromium zirconium copper. The electrode achieves good balance of four performance indexes of the welding electrode: excellent conductivity, high-temperature mechanical property with excellent welding quality, wear resistance and higher hardness and strength are obtained, so that the electrode is ensured to be difficult to wear, the service life is prolonged, the cost is reduced, the electrode tip is ensured to be difficult to deform and crush when working under certain pressure, and the welding quality is ensured.
Further preferably, the upper ends of the top hook positioning block and the supporting plate positioning block are provided with guiding slopes. The parts are convenient to place with the top hooks and the supporting plates.
Further preferably, the upper electrode holder and the lower electrode holder are both made of red copper. The red copper has good electrical conductivity and thermal conductivity, so that the upper electrode seat and the lower electrode seat have good current conductivity.
Further preferably, the rectangular spring is made of 50CrVA light-load rectangular die spring. Has the characteristics of small volume, precise rebound, high temperature resistance and long service life.
Compared with the prior art, the welding tool disclosed by the utility model is in linkage control with a universal projection welding machine during working, and an operator can accurately and reliably position the top hook and the supporting plate by using the tool, and then projection welding is finished. The whole operation process is convenient, simple and safe. The electrode is convenient to replace, and the inside of the upper electrode seat and the lower electrode seat are respectively provided with a special cooling water circulation channel, so that the upper electrode and the lower electrode have longer service lives, and through selecting relevant part materials for use, other parts such as an electrode assembly and a positioning mechanism are completely insulated, so that the stability of projection welding current is ensured, the projection welding strength and the position size stability of a product are ensured, the defect that the appearance of two sides of a top hook is provided with indentations is avoided, the scrapping of the parts is reduced, a special projection welding machine is not needed, and the production cost is reduced.
In operation, the top hook 91 is firstly placed on the lower electrode component of the tool through the guiding slope of the top hook positioning block 32, the lower end surfaces of the two sides of the top hook 91 are respectively contacted and positioned with the upper planes of the left and right lower electrodes 52, the front ends of the two sides of the top hook 91 are tightly attached to the rear ends of the top hook positioning block 32, the side surfaces of the top hook 91 are tightly attached to the side surfaces of the top hook positioning block 32, thus the top hook 91 is completely positioned on the tool, then the supporting plate 92 is placed on the tool supporting plate positioning cap 46 through the guiding slope of the supporting plate positioning block 42, the front and rear and left and right directions of the supporting plate 92 can be completely positioned through the supporting plate positioning block 42, the elastic positioning mechanism can ensure that the welding plane of the supporting plate 92 before projection welding and the projection welding convex point 911 at the upper ends of the two sides of the top hook 91 have a gap of 0.5-1.5, thus the upper and lower directions of the supporting plate 92 are accurately positioned, the pedal switch is stepped on by foot, the projection welding machine drives the upper electrode part to move downwards, the left and right side end surfaces of the lower end of the upper electrode 12 are pressed on the upper plane of the projection welding positions on the two sides of the supporting plate 92, projection welding is carried out, at the moment, the upper end surfaces of the left and right lower electrodes 52 are propped against the lower end surfaces of the projection welding positions on the two sides of the top hook 91, in the projection welding process, the supporting plate positioning cap 46 and the positioning guide sleeve 43 move downwards together when the supporting plate 92 is pressed downwards along with the upper electrode 12, the rectangular spring 44 is further compressed, the projection welding is finished, the upper electrode part returns to the initial position along with the upper platform of the projection welding machine, the projection welded top hook assembly is taken off, the projection welded top hook assembly is put into a feed box, and the supporting plate positioning cap 46 and the positioning guide sleeve also return to the initial positioning position under the rebound action of the spring, so that the position size and the projection welding strength of the welded top hook 91 and the supporting plate 92 are ensured. And (5) repeating the circulating work in sequence to finish projection welding of the next top hook component.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and additions to the utility model may be made by those skilled in the art without departing from the principles of the utility model and such modifications and additions are also considered to be within the scope of the utility model.
Claims (9)
1. The utility model provides a jack top hook subassembly welding frock, includes frock main part and top hook subassembly, its characterized in that, the frock main part includes upper electrode part, lower electrode part and water cooling system, upper electrode part installs on the upper platform working face of projection welding machine, upper electrode part includes upper electrode holder and upper electrode, upper end face of upper electrode holder with the upper platform working face contact of projection welding machine, two countersunk head mounting holes and two countersunk head through-holes have been seted up on the upper electrode holder, upper electrode holder passes through hexagon socket head screw countersunk head mounting hole and the fixed locking of T type nut of upper platform working face, waist type groove has been seted up to the below of upper electrode holder, waist type groove's width is unanimous with upper electrode's width, upper electrode is fixed in waist type inslot, upper electrode passes through the countersunk head through-hole with upper electrode holder is fixed through the screw;
the lower electrode component is mounted on a lower platform working surface of the projection welding machine and comprises a base and a lower electrode assembly, the bottom surface of the base is in contact with the lower platform working surface of the projection welding machine, four mounting and fixing bolt holes are formed in the base, the lower electrode component passes through the four mounting and fixing bolt holes in the base through socket head cap screws and is fixedly locked with T-shaped nuts of the lower platform working surface, the lower electrode assembly comprises a lower electrode seat, two lower electrodes, a square pressing plate and a pressing screw, the lower electrode seat is fixed with the center of the base through two connecting screws, the lower electrode seat is in a convex structure, grooves for mounting auxiliary positioning blocks are formed in the front side and the rear side of the lower electrode seat respectively, round through holes for mounting a supporting plate elastic positioning mechanism are formed in the middle of the lower electrode seat, the square pressing plate is respectively fixed on the left side and the right side of the lower electrode seat, and the lower electrode passes through the square pressing plate through the pressing screw and is connected with the lower electrode seat;
the water cooling system comprises an upper cooling water circulation channel and a lower cooling water circulation channel, the upper cooling water circulation channel is arranged in the upper electrode holder, the upper cooling water circulation channel comprises an upper water inlet nozzle and an upper water outlet nozzle, the upper water inlet nozzle and the upper water outlet nozzle are respectively in sealing connection with a left end water inlet of the upper electrode holder and a right end water outlet of the upper electrode holder through threads, the lower cooling water circulation channel is arranged in the lower electrode holder, and is close to the installation position of the lower electrode, the lower cooling water circulation channel comprises a lower water inlet nozzle and a lower water outlet nozzle, and the lower water inlet nozzle and the lower water outlet nozzle are respectively in sealing connection with a front left end water inlet of the lower electrode holder and a front right end water outlet of the lower electrode holder through threads.
2. The jack hook assembly welding fixture of claim 1, wherein: the lower end of the upper electrode is provided with a notch with a downward opening, the top hook and the supporting plate are welded and connected through projection welding convex points, the projection welding convex points are positioned on the vertical surfaces of the two sides of the top hook and the bottom surface of the supporting plate, and the two sides of the lower end of the upper electrode are positioned above the projection welding convex points.
3. The jack hook assembly welding fixture of claim 1, wherein: the lower electrode part further comprises a top hook positioning assembly, a supporting plate positioning assembly, an upper insulating plate, an insulating sleeve and a lower insulating plate, wherein the top hook positioning assembly comprises a top hook cushion block, a top hook positioning block, locking screws, fixing screws and auxiliary positioning blocks, the top hook cushion blocks are arranged at the front ends of the left side and the right side of the lower electrode part respectively, the top hook cushion blocks sequentially penetrate through the lower insulating plate, the insulating sleeve, the base and the upper insulating plate to be fixed through the fixing screws, the top hook positioning block is provided with two, waist-shaped holes are formed in the top hook positioning block, the top hook positioning block penetrates through the waist-shaped holes to be fixed at the upper ends of the left top hook cushion block and the right top hook cushion block respectively through the locking screws, the auxiliary positioning blocks are arranged in grooves of the front side and the rear side of the lower electrode base, and the auxiliary positioning blocks are auxiliary positioning blocks made of bakelite plates.
4. A jack hook assembly welding fixture as claimed in claim 3 wherein: the support plate positioning assembly comprises support plate cushion blocks, support plate positioning blocks and an elastic positioning mechanism, wherein two support plate cushion blocks are arranged, the support plate cushion blocks are respectively located at the rear ends of the left side and the right side of the lower electrode part, the support plate cushion blocks pass through fixing screws to sequentially penetrate through a lower insulating plate, an insulating sleeve, a base and an upper insulating plate to be fixed, the support plate positioning blocks are three, waist-shaped holes are formed in the support plate positioning blocks, and the support plate positioning blocks pass through the locking screws to penetrate through the waist-shaped holes to be respectively fixed at the upper ends of the left side and the right side of the support plate cushion blocks.
5. The jack hook assembly welding fixture of claim 4, wherein: the elastic positioning mechanism comprises a positioning guide sleeve, a rectangular spring, an adjusting screw and a supporting plate positioning cap, wherein the positioning guide sleeve is matched with a vertical through hole in the middle of the lower electrode seat, the upper end of the rectangular spring penetrates through an inner hole in the lower end of the positioning guide sleeve, the bottom of the rectangular spring is in contact with the upper surface of the base, the adjusting screw penetrates through the positioning guide sleeve and the rectangular spring to be in threaded connection with the base, the supporting plate positioning cap is positioned at the upper end of the positioning guide sleeve, the supporting plate positioning cap is in interference tight fit with the positioning guide sleeve, and the rectangular spring is in a precompression deformation structure.
6. The jack hook assembly welding fixture of claim 5, wherein: a round through hole is formed in the middle of the supporting plate positioning cap, and the supporting plate positioning cap is a positioning cap made of bakelite plates.
7. A jack hook assembly welding fixture as claimed in claim 3 wherein: the upper insulating plate is provided with two insulating plates, the upper insulating plate is located on the left side and the right side of the upper end of the base, ten insulating sleeves are arranged on the left side and the right side of the upper end of the base, the insulating sleeves are located in screw holes of fixing screws, the lower insulating plate is provided with two insulating plates, the lower insulating plate is located in the left square groove and the right square groove of the lower end portion of the base, and the upper insulating plate, the insulating sleeves and the lower insulating plate are made of bakelite plates.
8. The jack hook assembly welding fixture of claim 1, wherein: the upper electrode and the lower electrode are both electrodes made of chromium, zirconium and copper.
9. The jack hook assembly welding fixture of claim 4, wherein: the upper ends of the top hook positioning block and the supporting plate positioning block are respectively provided with a guiding slope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320839867.0U CN219924855U (en) | 2023-04-14 | 2023-04-14 | Jack top hook subassembly welding frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320839867.0U CN219924855U (en) | 2023-04-14 | 2023-04-14 | Jack top hook subassembly welding frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219924855U true CN219924855U (en) | 2023-10-31 |
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ID=88490225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320839867.0U Active CN219924855U (en) | 2023-04-14 | 2023-04-14 | Jack top hook subassembly welding frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219924855U (en) |
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2023
- 2023-04-14 CN CN202320839867.0U patent/CN219924855U/en active Active
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