Projection welding support lug device with automatic positioning function

Abstract

The invention discloses an automatic positioning projection welding support lug device, and belongs to the technical field of automobile shock absorbers. The problem that in the prior art, a supporting lug of an oil storage cylinder assembly of an automobile shock absorber is inconvenient to position in the welding process is solved. A support lug electrode body is arranged on the mounting plate, the support lug electrode body comprises a positioning side surface matched with a loading part of the support lug, a projection welding part and the loading part of the support lug are respectively attached to the top surface and the positioning side surface of the support lug electrode body, support lug baffles I are arranged on two side surfaces, opposite to the positioning side surface, of the support lug electrode body, and extend out of the positioning side surface; the distance between the two first support lug baffles is the same as the width of the support lug, a second support lug baffle is rotationally arranged on the mounting plate, an extension spring is arranged between the support lug electrode body and the second support lug baffle, and in the initial state, the second support lug baffle is attached to the two first support lug baffles. The automatic positioning support lug projection welding device is used for rapid, accurate and automatic positioning during support lug projection welding of an oil storage cylinder assembly of an automobile shock absorber.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile shock absorbers, and in particular relates to an automatic positioning projection welding lug device. Background Art

[0002] At present, the oil storage cylinder assembly without bracket structure on the automobile shock absorber ( Figure 3 ), the wiring harness lugs required for vehicle installation are welded by projection welding ( Figure 4 ), the lug projection welding contact surface is small, and the angle between the lug loading surface and the projection welding surface exceeds 90 degrees, which causes the lug to often slip off the tooling, making the lug angle position unstable. The lug loading surface of the existing electrode device and the electrode lug fitting surface use a magnet for automatic fitting, but the high temperature demagnetization after projection welding, the fitting effect is positively correlated with the magnetic size, but the magnetic effect can only be manually tested regularly, and the reassembly of the magnet is complicated and cumbersome. The position of the product lug is unstable, and the replacement of the magnet or electrode increases the welding cycle; or the position of the lug is manually adjusted to ensure the correct angle and size of the lug. The manual adjustment of the lug position has low positioning accuracy, resulting in poor welding quality, and manual adjustment of the lug position takes a long time, which prolongs the welding cycle and has low welding efficiency. Summary of the invention

[0003] The present invention provides an automatic positioning projection welding lug device, which can quickly and accurately position the lug and improve welding quality and welding efficiency.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] The present invention discloses an automatic positioning projection welding ear device, comprising a mounting plate, wherein an ear electrode body is arranged on the mounting plate, the ear electrode body comprises a positioning side surface cooperating with a loading portion of the ear, the ear is clamped on the ear electrode body, the projection welding portion and the loading portion of the ear are respectively in contact with the top surface of the ear electrode body and the positioning side surface, the ear baffle plate 1 is arranged on both sides of the ear electrode body close to its upper end and opposite to the positioning side surface, two pieces of the ear baffle plates 1 extend out of the positioning side surface, the spacing between the two pieces of the ear baffle plates 1 is the same as the width of the ear and they are arranged opposite to each other, an ear baffle plate 2 is rotatably arranged on the mounting plate, the ear baffle plate 2 is arranged opposite to the positioning side surface, a tension spring is arranged between the ear electrode body and the ear baffle plate 2, and in an initial state, the ear baffle plate 2 is in contact with the two pieces of the ear baffle plates 1.

[0006] Further, the number of the tension springs is two. Screws are arranged on both side surfaces of the lug electrode body close to its upper end and opposite to the positioning side surface. The two screws are arranged oppositely. The lug baffle plate II is provided with hanging holes corresponding to the two screws one by one. The hooks at both ends of the tension spring are respectively hung on the corresponding screws and the hanging holes.

[0007] Further, the lug baffle plate II includes a hinge. One hinge plate of the hinge is fixedly installed on the side surface of the mounting plate, and a retaining piece is welded to the other hinge plate of the hinge.

[0008] Further, the length that the two lug baffle plates I extend out of the positioning side surface is equal to the thickness of the lug.

[0009] Further, mounting holes are arranged at the four corner positions of the mounting plate.

[0010] Further, the lug electrode body is a structural member made of chromium zirconium copper.

[0011] The beneficial effects of the present invention are:

[0012] An automatic positioning projection welding ear device provided by the present application is used for positioning during the projection welding of the ear on the bracketless structure oil storage cylinder assembly of an automotive shock absorber. An ear electrode body is installed on the mounting plate. On both sides of the positioning side surface of the ear electrode body that cooperates with the mounting part of the ear, an ear baffle one is installed. The ear baffle two is rotatably installed on the mounting plate, and the ear baffle two is arranged opposite to the positioning side surface of the ear electrode body. The ear baffle one on both sides of the positioning side surface of the ear electrode body, the positioning side surface of the ear electrode body, and the ear baffle two form an ear positioning space. When positioning the ear, insert the mounting part of the ear into the ear positioning space until the projection welding part of the ear fits against the top surface of the ear electrode body, and the operation is simple. The ear baffle one on both sides of the positioning side surface of the ear electrode body limits both sides of the mounting part of the ear to prevent the ear from moving to both sides; the length that the two ear baffles one extend out of the positioning side surface of the ear electrode body is slightly less than or equal to the thickness of the mounting part of the ear. During the process of inserting the mounting part of the ear into the ear positioning space, the mounting part of the ear touches the ear baffle two, and the mounting part of the ear generates an extrusion thrust on the ear baffle two, causing the ear baffle two to rotate in the direction away from the positioning side surface of the ear electrode body, and the tension spring stretches and stores elastic potential energy. The tension spring gives a pulling force in the opposite direction of the rotation direction of the ear baffle two (towards the direction close to the positioning side surface of the ear electrode body), causing the ear baffle two to automatically rotate and reset towards the direction close to the positioning side surface of the ear electrode body, so that the ear baffle two generates a thrust on the mounting part of the ear, pressing and blocking the mounting part of the ear between the ear baffle two and the positioning side surface of the ear electrode body to prevent the ear from moving in the direction away from the positioning side surface of the ear electrode body. The ear baffle two and the two ear baffles one automatically position the mounting part of the ear in the ear positioning space, thereby automatically positioning the ear. The automatic positioning projection welding ear device of the present application quickly and accurately positions the ear, avoiding the problems of low positioning accuracy and long positioning cycle caused by manually aligning the ear, improving the positioning accuracy of the ear, and improving the welding quality and welding efficiency of the ear. The automatic positioning projection welding ear device of the present application is composed of mechanical structures such as a mounting plate, an ear electrode body, an ear baffle one, an ear baffle two, and a tension spring. The structure is simple, avoiding the situation that the magnet demagnetizes at high temperature and affects the positioning effect, with good stability and long service life. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1It is a side view of a projection welding ear device with automatic positioning provided by an embodiment of the present invention;

[0015] Figure 2 It is a top view of a projection welding ear device with automatic positioning provided by an embodiment of the present invention;

[0016] Figure 3 It is a structural schematic diagram of an oil storage cylinder assembly with a bracketless structure in the background technology Figure 1 ;

[0017] Figure 4 It is a structural schematic diagram of an oil storage cylinder assembly with a bracketless structure in the background technology Figure 2 .

[0018] Reference numerals:

[0019] Mounting plate 1, ear electrode body 2, positioning side 201, screw 3, ear baffle one 4, ear baffle two 5, retaining piece 501, hinge 502, hanging hole 503, tension spring 6, mounting hole 7, bracketless structure oil storage cylinder assembly 8, ear 9, loading part 901, projection welding part 902. Specific embodiments

[0020] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present invention.

[0021] The present invention will be further described below with reference to the drawings and embodiments.

[0022] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, this embodiment provides a projection welding ear device with automatic positioning, including a mounting plate 1. A lug electrode body 2 is arranged on the mounting plate 1. The lug electrode body 2 includes a positioning side surface 201 that cooperates with the loading part 901 of the lug 9. The lug 9 is clamped on the lug electrode body 2. The projection welding part 902 and the loading part 901 of the lug 9 are respectively in contact with the top surface of the lug electrode body 2 and the positioning side surface 201. On both side surfaces of the lug electrode body 2 near its upper end and opposite to the positioning side surface 201, lug baffles one 4 are arranged. The two lug baffles one 4 protrude from the positioning side surface 201. The distance between the two lug baffles one 4 is the same as the width of the lug 9 and they are arranged oppositely. A lug baffle two 5 is rotatably arranged on the mounting plate 1. The lug baffle two 5 is arranged opposite to the positioning side surface 201. A tension spring 6 is arranged between the lug electrode body 2 and the lug baffle two 5. One end of the tension spring 6 is connected to the lug electrode body 2, and the other end of the tension spring 6 is connected to the lug baffle two 5. In the initial state, the lug baffle two 5 is in contact with the two lug baffles one 4. Among them, the lug 9 is clamped on the lug electrode body 2. The projection welding part 902 of the lug 9 is in contact with the top surface of the lug electrode body 2, and the loading part 901 of the lug 9 is in contact with the positioning side surface 201, that is, the positioning side surface 201 of the lug electrode body 2 is parallel to the loading part 901 of the lug 9. The end surface of the lug baffle one 4 protruding from the positioning side surface 201 is an inclined surface parallel to the positioning side surface 201, ensuring that the lug baffle two 5 is in contact with the loading part 901 of the lug 9 and improving the positioning stability of the projection welding ear device with automatic positioning for the lug 9. The width of the lug electrode body 2 is the same as the width of the lug 9. The distance between the two lug baffles one 4, the width of the lug electrode body 2, and the width of the lug 9 are the same, improving the integrity of the projection welding ear device with automatic positioning for lug positioning and the positioning stability for the lug 9. The lug baffle one 4 made of stainless steel can be fixedly installed on the lug electrode body 2 by screws or welding. For example, two through holes are drilled in the lug baffle one 4 along its length direction, and two threaded holes are drilled at the corresponding positions of the lug electrode body 2. The screws pass through the through holes and are threadedly fastened to the threaded holes. The lug baffle two 5 can be rotatably installed on the mounting plate 1 by a pin shaft or a hinge. The mounting plate 1 and the lug electrode body 2 can be integrally formed.

[0023] An automatic positioning projection welding lug device based on the above structure is used for positioning during the welding of the lug 9 of the bracketless structure oil storage cylinder assembly 8 of an automotive shock absorber. The lug electrode body 2 is mounted (such as welded) on the mounting plate 1. Lug baffles one 4 are mounted on both sides of the positioning side 201 of the lug electrode body 2 that cooperates with the vehicle-mounted part 901 of the lug 9. The mounting plate 1 rotatably mounts the lug baffle two 5, and the lug baffle two 5 is arranged opposite to the positioning side 201 of the lug electrode body 2. The lug baffle one 4 on both sides of the positioning side 201 of the lug electrode body 2, the positioning side 201 of the lug electrode body 2, and the lug baffle two 5 form a lug positioning space. When positioning the lug 9, insert the vehicle-mounted part 901 of the lug 9 into the lug positioning space until the projection welding part 902 of the lug 9 is in contact with the top surface of the lug electrode body 2, which is simple to operate. The lug baffles one 4 on both sides of the positioning side 201 of the lug electrode body 2 limit both sides of the vehicle-mounted part 901 of the lug 9 to prevent the lug 9 from moving to both sides; the length that the two lug baffles one 4 extend out of the positioning side 201 of the lug electrode body 2 is slightly less than (such as the length that the lug baffle one extends out of the positioning side of the lug electrode body is 1 mm to 2 mm smaller than the thickness of the vehicle-mounted part of the lug) or equal to the thickness of the vehicle-mounted part 901 of the lug 9. During the process of inserting the vehicle-mounted part 901 of the lug 9 into the lug positioning space, the vehicle-mounted part 901 of the lug 9 touches the lug baffle two 5, and the vehicle-mounted part 901 of the lug 9 generates a squeezing thrust on the lug baffle two 5, causing the lug baffle two 5 to rotate in the direction away from the positioning side 201 of the lug electrode body 2, and the tension spring 6 stretches and stores elastic potential energy. The tension spring 6 gives a pulling force in the opposite direction of the rotation direction of the lug baffle two 5 (towards the direction close to the positioning side of the lug electrode body), causing the lug baffle two 5 to automatically rotate and reset in the direction close to the positioning side 201 of the lug electrode body 2, so that the lug baffle two 5 generates a thrust on the vehicle-mounted part 901 of the lug 9, pressing and blocking the vehicle-mounted part 901 of the lug 9 between the lug baffle two 5 and the positioning side of the lug electrode body 2 to prevent the lug 9 from moving in the direction away from the positioning side 201 of the lug electrode body 2. The lug baffle two 5 and the two lug baffles one 4 automatically position the vehicle-mounted part 901 of the lug 9 in the lug positioning space, thereby automatically positioning the lug 9. The automatic positioning projection welding lug device of the present application quickly and accurately positions the lug 9, avoiding the problems of low positioning accuracy and long positioning cycle caused by manually aligning the lug 9 for positioning, improving the positioning accuracy of the lug 9, and improving the welding quality and welding efficiency of the lug 9. The automatic positioning projection welding lug device of the present application is composed of mechanical structures such as a mounting plate 1, a lug electrode body 2, lug baffles one 4, a lug baffle two 5, and a tension spring 6. The structure is simple, avoiding the situation that the magnet is demagnetized at high temperature and affecting the positioning effect, with good stability and long service life.When the lug 9 is projection welded to the bracketless structure oil storage cylinder assembly 8 on the vehicle shock absorber, the vehicle loading part 901 of the lug 9 is inserted into the lug positioning space for automatic positioning. The projection welding lug device with automatic positioning is fixed to the bottom plate of the shock absorber lug projection welding positioning tooling by screws. The bracketless structure oil storage cylinder assembly 8 on the vehicle shock absorber is fixed to the shock absorber lug projection welding positioning tooling. The lug projection welding position of the bracketless structure oil storage cylinder assembly 8 on the vehicle shock absorber is butted against the projection welding part of the lug 9. The upper electrode at the top is energized and pressed down. The welding bumps at the projection welding part of the lug are melted and welded to the lug projection welding position of the bracketless structure oil storage cylinder assembly 8. After welding is completed, the upper electrode rises and the power is cut off. The shock absorber lug projection welding positioning tooling is an existing solution, including a bottom plate, a positioning seat, a positioning pin, a V-shaped support block, etc.

[0024] As an implementable mode, as Figure 1 , Figure 2 shown, the number of the tension springs 6 is two. On both sides of the lug electrode body 2 near its upper end relative to the positioning side surface 201, screws 3 are arranged. The two screws 3 are arranged oppositely. The lug baffle two 5 is provided with hanging holes 503 corresponding to the two screws 3 one by one. The hooks at both ends of the tension spring 6 are respectively hung on the corresponding screws 3 and the hanging holes 503.

[0025] Tension springs 6 are installed on both the left and right sides of the lug electrode body 2. One ends of the two tension springs 6 are respectively hung on the screws 3 installed on the left and right sides of the lug electrode body 2. The other ends of the two tension springs 6 are respectively hung on the hanging holes 503 at the corresponding left and right ends of the lug baffle two 5. The two tension springs 6 generate a more stable and uniform pulling force on the lug baffle two 5 and a more stable and uniform pushing force on the vehicle loading part of the lug, making the projection welding lug device with automatic positioning of the present application more stable in positioning the lug.

[0026] As an implementable mode, as Figure 1 , Figure 2 shown, the lug baffle two 5 includes a hinge 502. One hinge piece of the hinge 502 is fixedly installed on the side surface of the mounting plate 1, and the other hinge piece of the hinge 502 is welded with a baffle 501.

[0027] The ear baffle II 5 is rotatably installed on the mounting plate 1 by using an existing stainless steel hinge structure. The lower hinge piece of the hinge 502 is welded or fixedly connected to the side surface of the mounting plate 1 by screws. The baffle 501 is welded to the free end of the upper hinge piece of the hinge 502 (the free end of the upper hinge piece is the other end relative to the end where the upper hinge piece is rotatably connected to the lower hinge piece). Two hanging holes 503 are drilled opposite to each other at the left and right ends of the upper hinge piece of the hinge 502 or two hanging holes 503 are drilled opposite to each other at the left and right ends of the baffle 501. The baffle 501 and the surface of the upper hinge piece of the hinge 502 facing the ear electrode body 2 are coplanar. The structure is simple, has good corrosion resistance, high strength, is stable and durable, and saves installation space.

[0028] As an implementable mode, as Figure 1 , Figure 2 shown, the lengths of the two ear baffles I 4 extending out of the positioning side surface 201 are equal to the thickness of the ear.

[0029] The ear baffle II 5 fits against the loading part of the ear. The tension spring 6 is in the initial state. The ear baffle II 5 will not exert a thrust on the loading part of the ear and will not exert an upward thrust on the loading part of the ear, better positioning the loading part of the ear in the ear positioning space and making the ear positioning more stable.

[0030] As an implementable mode, as Figure 1 , Figure 2 shown, mounting holes 7 are provided at the four corner positions of the mounting plate 1.

[0031] Vertical mounting holes 7 are drilled at the four corner positions of the mounting plate 1. Screws pass through the mounting holes 7 to install the automatic positioning projection welding ear device on the bottom plate of the shock absorber ear projection welding positioning tooling.

[0032] Among them, the ear electrode body 2 is a structural member made of chromium zirconium copper.

[0033] The ear electrode body 2 is made of chromium zirconium copper, has good electrical conductivity, thermal conductivity, wear resistance and explosion resistance, less welding loss, fast welding speed and low welding cost.

[0034] The above is only the specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. An automatic positioning projection welding lug device, characterized in that, It includes a mounting plate (1), on which an ear electrode body (2) is provided. The ear electrode body (2) includes a positioning side surface (201) that cooperates with the loading part (901) of the ear (9). The ear (9) is clamped on the ear electrode body (2). The projection welding part (902) and the loading part (901) of the ear (9) are respectively in contact with the top surface of the ear electrode body (2) and the positioning side surface (201). On both sides of the ear electrode body (2) near its upper end and opposite to the positioning side surface (201), ear baffles one (4) are provided. The two ear baffles one (4) extend out of the positioning side surface (201). The distance between the two ear baffles one (4) is the same as the width of the ear (9) and they are oppositely arranged. A rotatable ear baffle two (5) is provided on the mounting plate (1). The ear baffle two (5) is arranged opposite to the positioning side surface (201). A tension spring (6) is provided between the ear electrode body (2) and the ear baffle two (5). In the initial state, the ear baffle two (5) is in contact with the two ear baffles one (4).

2. The automatic positioning projection welding ear device according to claim 1, wherein The number of the tension springs (6) is two. On both sides of the ear electrode body (2) near its upper end and opposite to the positioning side surface (201), screws (3) are provided. The two screws (3) are oppositely arranged. The ear baffle two (5) is provided with hanging holes (503) corresponding to the two screws (3) one by one. The hooks at both ends of the tension spring (6) are respectively hung on the corresponding screws (3) and the hanging holes (503).

3. An automatic positioning projection welding lug device according to claim 2, characterized in that, The ear baffle two (5) includes a hinge (502). One hinge piece of the hinge (502) is fixedly installed on the side surface of the mounting plate (1), and a retaining piece (501) is welded to the other hinge piece of the hinge (502).

4. An automatic positioning projection welding lug device according to claim 1, characterized in that, The length that the two ear baffles one (4) extend out of the positioning side surface (201) is equal to the thickness of the ear (9).

5. An automatic positioning projection welding ear device according to claim 1, characterized in that, Mounting holes (7) are provided at the four corner positions of the mounting plate (1).

6. An automatic positioning projection welding lug device according to claim 1, wherein The ear electrode body (2) is a structural member made of chromium zirconium copper.

Images