Projection welding support lug device with automatic positioning function

Abstract

The utility model 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] This utility model belongs to the field of automotive shock absorber technology, specifically, it relates to an automatic positioning projection weld support device. Background Technology

[0002] Currently, the bracketless oil reservoir assembly on automotive shock absorbers ( Figure 3 The wiring harness lugs required for vehicle assembly are welded using projection welding. Figure 4 The small contact area of ​​the lugs during projection welding, with an angle exceeding 90 degrees between the lug mounting surface and the projection welding surface, causes the lugs to frequently slip off the tooling, resulting in unstable lug angles and positions. Existing electrode devices use a magnet for automatic bonding between the lug mounting surface and the electrode lug contact surface; however, high-temperature demagnetization after projection welding means the bonding effect is positively correlated with the magnet strength, but the magnetic effect can only be checked manually periodically. Reassembling the magnet is complex and cumbersome, leading to unstable lug positions and increased welding cycles due to magnet or electrode replacement. Alternatively, manual alignment of the lugs can be used to ensure correct angle and size, but this method suffers from low positioning accuracy, resulting in poor welding quality. Furthermore, manual alignment is time-consuming, extending the welding cycle and reducing welding efficiency. Utility Model Content

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

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This utility model discloses an automatic positioning projection welding lug device, including a mounting plate. A lug electrode body is disposed on the mounting plate. The lug electrode body includes a positioning side that mates with the mounting portion of the lug. The lug is secured to the lug electrode body. The projection welding portion and the mounting portion of the lug are respectively attached to the top surface of the lug electrode body and the positioning side. Lug baffles are disposed on both sides of the lug electrode body near its upper end, opposite to the positioning side. The two lug baffles extend beyond the positioning side, and the distance between the two lug baffles is the same as the width of the lug and they are arranged opposite each other. A second lug baffle is rotatably disposed on the mounting plate, opposite to the positioning side. A tension spring is disposed between the lug electrode body and the second lug baffle. In the initial state, the second lug baffle is attached to the two first lug baffles.

[0006] Furthermore, there are two tension springs. Screws are provided on both sides of the ear electrode body near its upper end, opposite to the positioning side. The two screws are arranged opposite each other. The ear baffle has hanging holes corresponding to the two screws. The hooks at both ends of the tension spring are respectively hung on the corresponding screws and the hanging holes.

[0007] Furthermore, the second support baffle includes a hinge, one hinge piece of which is fixedly installed on the side of the mounting plate, and the other hinge piece of which is welded with a baffle plate.

[0008] Furthermore, the length of each of the two support lug baffles extending beyond the positioning side is equal to the thickness of the support lug.

[0009] Furthermore, mounting holes are provided at the four corners of the mounting plate.

[0010] Furthermore, the body of the ear electrode is a structural component made of chromium zirconium copper.

[0011] The beneficial effects of this utility model are:

[0012] This application provides an automatic positioning projection welding lug device for positioning the lugs of the bracketless oil reservoir assembly of an automotive shock absorber during welding. A lug electrode body is mounted on a mounting plate. Lug baffles are installed on both sides of the positioning side of the lug electrode body that mates with the mounting portion of the lug. A second lug baffle is rotatably mounted on the mounting plate. The second lug baffle is positioned opposite to the positioning side of the lug electrode body. The first lug baffle, the positioning side of the lug electrode body, and the second lug baffle together form a lug positioning space. To position the lug, the mounting portion of the lug is inserted into the lug positioning space until the projection weld of the lug is in contact with the top surface of the lug electrode body. The operation is simple. The mounting portions of the two lugs on the positioning sides of the lug electrode body are limited on both sides to prevent the lugs from moving to the sides. The length of the two lug baffles extending beyond the positioning side of the lug electrode body is slightly less than or equal to the thickness of the mounting portion of the lug. During the insertion of the mounting portion of the lug into the positioning space, the mounting portion of the lug touches the second lug baffle, which exerts a squeezing force on the second lug baffle, causing the second lug baffle to rotate away from the positioning side of the lug electrode body. The tension spring stretches and stores elastic potential energy, and the tension spring exerts a pulling force on the second lug baffle in the opposite direction of rotation (towards the positioning side of the lug electrode body), causing the second lug baffle to... The device automatically rotates and resets towards the positioning side of the lug electrode body, causing the lug baffle two to exert a pushing force on the mounting part of the lug, pressing the mounting part of the lug tightly between the lug baffle two and the positioning side of the lug electrode body. This prevents the lug from moving away from the positioning side of the lug electrode body. The lug baffle two and the two lug baffles automatically position the mounting part of the lug within the lug positioning space, thus automatically positioning the lug. The automatic positioning projection welding lug device of this application quickly and accurately positions the lug, avoiding the problems of low positioning accuracy and long positioning cycle caused by manual lug positioning, improving the accuracy of lug positioning, and improving the welding quality and welding efficiency of the lug. The automatic positioning projection welding lug device of this application consists of a mounting plate, lug electrode body, lug baffle one, lug baffle two, tension spring and other mechanical structures. The structure is simple, avoiding the situation where high temperature demagnetization of magnets affects the positioning effect, and has good stability and long service life. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1This is a side view of an automatic positioning projection welding lug device provided in an embodiment of the present utility model;

[0015] Figure 2 This is a top view of an automatic positioning projection welding lug device provided in an embodiment of this utility model;

[0016] Figure 3 This is a schematic diagram of a bracketless oil reservoir assembly in the background art. Figure 1 ;

[0017] Figure 4 This is a schematic diagram of a bracketless oil reservoir assembly in the background art. Figure 2 .

[0018] Figure label:

[0019] Mounting plate 1, support electrode body 2, positioning side 201, screw 3, support baffle one 4, support baffle two 5, baffle plate 501, hinge 502, hanging hole 503, tension spring 6, mounting hole 7, bracketless oil reservoir assembly 8, support ear 9, loading part 901, projection weld part 902. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

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

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, this embodiment provides an automatically positioned projection welding lug device, including a mounting plate 1. A lug electrode body 2 is disposed on the mounting plate 1. The lug electrode body 2 includes a positioning side surface 201 that mates with the mounting portion 901 of the lug 9. The lug 9 is secured to the lug electrode body 2. The projection welding portion 902 and the mounting portion 901 of the lug 9 are respectively attached to the top surface of the lug electrode body 2 and the positioning side surface 201. Lug baffles 4 are provided on both sides of the lug electrode body 2 near its upper end opposite to the positioning side surface 201. The first ear baffle 4 extends out of the positioning side 201. The distance between the two first ear baffles 4 is the same as the width of the ear 9 and they are arranged opposite each other. The second ear baffle 5 is rotatably arranged on the mounting plate 1. The second ear baffle 5 is arranged opposite to the positioning side 201. A tension spring 6 is arranged between the ear electrode body 2 and the second ear baffle 5. One end of the tension spring 6 is connected to the ear electrode body 2, and the other end of the tension spring 6 is connected to the second ear baffle 5. In the initial state, the second ear baffle 5 is in contact with the two first ear baffles 4. In this device, the lug 9 is secured to the lug electrode body 2. The projection weld portion 902 of the lug 9 is in contact with the top surface of the lug electrode body 2, and the mounting portion 901 of the lug 9 is in contact with the positioning side 201. That is, the positioning side 201 of the lug electrode body 2 is parallel to the mounting portion 901 of the lug 9. The end face of the lug baffle 4 extending from the positioning side 201 is an inclined surface parallel to the positioning side 201, ensuring that the lug baffle 5 is in contact with the mounting portion 901 of the lug 9, thus improving the stability of the projection weld lug positioning device for the lug 9. The width of the lug electrode body 2 is the same as the width of the lug 9. The spacing between the two lug baffles 4, the width of the lug electrode body 2, and the width of the lug 9 are all the same, improving the overall positioning integrity of the projection weld lug device and enhancing the stability of the lug 9 positioning. The stainless steel support baffle 4 can be fixedly installed on the support electrode body 2 by screws or welding. Alternatively, two through holes can be drilled along the length of the support baffle 4, and two threaded holes can be drilled at corresponding positions on the support electrode body 2. Screws can pass through the through holes and be threadedly fastened to the threaded holes. The support baffle 5 can be rotatably installed on the mounting plate 1 by means of a pin or hinge. The mounting plate 1 and the support electrode body 2 can be manufactured as a single piece.

[0023] An automatic positioning projection welding lug device based on the above structure is used for positioning the lug 9 of the bracketless oil reservoir assembly 8 of an automotive shock absorber during welding. A lug electrode body 2 is installed (e.g., welded) on a mounting plate 1. Lug baffles 4 are installed on both sides of the positioning side 201 of the lug electrode body 2 that mates with the mounting portion 901 of the lug 9. A second lug baffle 5 is rotatably installed on the mounting plate 1. The second lug baffle 5 is positioned opposite to the positioning side 201 of the lug electrode body 2. The first lug baffle 4, the positioning side 201 of the lug electrode body 2, and the second lug baffle 5 together form a lug positioning space. When positioning the lug 9, the mounting portion 901 of the lug 9 is inserted into the lug positioning space until the projection weld 902 of the lug 9 is in contact with the top surface of the lug electrode body 2. The operation is simple. The lug baffles 4 on both sides of the positioning side 201 of the lug electrode body 2 limit the sides of the mounting part 901 of the lug 9, preventing the lug 9 from moving to the sides. The length of the two lug baffles 4 extending out of the positioning side 201 of the lug electrode body 2 is slightly less than (e.g., the length of the lug baffle extending out of the positioning side of the lug electrode body is 1mm to 2mm less than the thickness of the mounting part of the lug) or equal to the thickness of the mounting part 901 of the lug 9. During the process of the mounting part 901 of the lug 9 being inserted into the lug positioning space, the mounting part 901 of the lug 9 touches the lug baffle 5, and the mounting part 901 of the lug 9 generates a squeezing force on the lug baffle 5, causing the lug baffle 5 to rotate in a direction away from the positioning side 201 of the lug electrode body 2. The tension spring 6 stretches and lengthens to store elastic potential energy, and the tension spring 6 exerts a force on the lug baffle 5 in the opposite direction of the rotation direction (towards the side closer to the lug electrode body 2). The pulling force (in the direction of the positioning side near the electrode body 2) causes the second lug baffle 5 to automatically rotate and reset in the direction of the positioning side 201 near the electrode body 2, so that the second lug baffle 5 generates a pushing force on the mounting part 901 of the lug 9, pressing the mounting part 901 of the lug 9 tightly between the second lug baffle 25 and the positioning side of the electrode body 2, preventing the lug 9 from moving away from the positioning side 201 of the electrode body 2. The second lug baffle 25 and the two first lug baffles 4 automatically position the mounting 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 this application can quickly and accurately position the lug 9, avoiding the problems of low positioning accuracy and long positioning cycle caused by manual positioning of the lug 9, 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 this application consists of a mounting plate 1, lug electrode body 2, lug baffle one 4, lug baffle two 5, tension spring 6 and other mechanical structures. It has a simple structure, avoids the situation where high temperature demagnetization of magnets affects the positioning effect, has good stability and long service life.When the lug 9 is projected onto the bracketless oil reservoir assembly 8 on the automotive shock absorber, the mounting part 901 of the lug 9 is inserted into the lug positioning space for automatic positioning. The screws of this automatically positioned projected welding lug device are fixed to the base plate of the shock absorber lug projected welding positioning fixture. The bracketless oil reservoir assembly 8 on the automotive shock absorber is fixed to the shock absorber lug projected welding positioning fixture. The projected welding position of the lug on the bracketless oil reservoir assembly 8 aligns with the projected welding part of the lug 9. The upper electrode at the top is energized and pressed down, melting the welding protrusion of the projected welding part of the lug and welding it to the projected welding position of the bracketless oil reservoir assembly 8. After welding is completed, the upper electrode rises and de-energizes. The shock absorber lug projected welding positioning fixture is an existing design, including a base plate, positioning seat, positioning pin, V-shaped support block, etc.

[0024] As one possible implementation method, such as Figure 1 , Figure 2 As shown, there are two tension springs 6. Screws 3 are provided on both sides of the ear electrode body 2 near its upper end relative to the positioning side 201. The two screws 3 are arranged opposite each other. The ear baffle 2 5 has hanging holes 503 corresponding to the two screws 3. 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 ear electrode body 2. One end of each tension spring 6 is hung on the screws 3 installed on the left and right sides of the ear electrode body 2, and the other end of each tension spring 6 is hung on the hanging holes 503 at the left and right ends of the ear baffle 2 5, respectively. The two tension springs 6 generate a more stable and uniform tension on the ear baffle 2 5 and a more stable and uniform thrust on the mounting part of the ear, making the automatic positioning projection welding ear device of this application more stable in positioning the ear.

[0026] As one possible implementation method, such as Figure 1 , Figure 2 As shown, the second support baffle 5 includes a hinge 502. One hinge piece of the hinge 502 is fixedly installed on the side of the mounting plate 1, and the other hinge piece of the hinge 502 is welded with a baffle 501.

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

[0028] As one possible implementation method, such as Figure 1 , Figure 2 As shown, the length of the two support lugs 4 extending out of the positioning side 201 is equal to the thickness of the support lug.

[0029] The second baffle 5 fits against the mounting part of the bracket, and the tension spring 6 is in its initial state. The second baffle 5 will not exert a pushing force on the mounting part of the bracket, nor will it exert an upward pushing force on the mounting part of the bracket. This will better position the mounting part of the bracket within the bracket positioning space, thereby making the bracket positioning more stable.

[0030] As one possible implementation method, such as Figure 1 , Figure 2 As shown, mounting holes 7 are provided at the four corners of the mounting plate 1.

[0031] Vertical mounting holes 7 are drilled at the four corners of the mounting plate 1. Screws are passed through the mounting holes 7 to install the automatic positioning projection weld support device on the base plate of the shock absorber support projection weld positioning fixture.

[0032] The ear electrode body 2 is a structural component made of chromium zirconium copper.

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

[0034] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic positioning projection welding lug device, characterized in that, The device includes a mounting plate (1), on which a lug electrode body (2) is provided. The lug electrode body (2) includes a positioning side (201) that mates with the mounting portion (901) of the lug (9). The lug (9) is secured to the lug electrode body (2). The projection weld portion (902) and the mounting portion (901) of the lug (9) are respectively attached to the top surface of the lug electrode body (2) and the positioning side (201). The lug electrode body (2) has two sides near its upper end opposite to the positioning side (201) with [missing information]. Two ear baffles (4) extend out of the positioning side (201). The distance between the two ear baffles (4) is the same as the width of the ear (9) and they are arranged opposite to each other. An ear baffle (5) is rotatably arranged on the mounting plate (1). The ear baffle (5) is arranged opposite to the positioning side (201). A tension spring (6) is arranged between the ear electrode body (2) and the ear baffle (5). In the initial state, the ear baffle (5) is in contact with the two ear baffles (4).

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

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

4. The automatic positioning projection welding lug device according to claim 1, characterized in that, The length of the two support lugs (4) extending out of the positioning side (201) is equal to the thickness of the support lug (9).

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

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

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