A projection welding tool for automobile fuel distribution pipe and bracket

Abstract

The utility model provides a projection welding tool for a fuel distribution pipe and a bracket of an automobile, the projection welding tool comprises an upper base plate and a lower base plate, a guide column is arranged between the upper base plate and the lower base plate; a first upper electrode and a second upper electrode are arranged at the bottom of the upper base plate, and a first lower electrode and a second lower electrode are arranged at the top of the lower base plate; a third positioning device, a third clamping device, a first positioning device, a second positioning device, a first group of cylinders, and a second group of cylinders are also arranged at the top of the lower base plate, the first upper electrode, the first bracket and the first lower electrode correspond in the vertical direction, and the second upper electrode, the second bracket and the second lower electrode correspond in the vertical direction. The utility model solves the problem of how to make multiple brackets on both sides of the distribution pipe welded to the distribution pipe at one time in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel distribution pipe parts assembly, in particular to a projection welding tool for an automobile fuel distribution pipe and a bracket. Background Art

[0002] At present, the domestic fuel distribution pipe assembly process (i.e., the assembly between the distribution pipe and the bracket) generally adopts step-by-step multi-process welding and multi-process assembly to complete the assembly. The investment in equipment is relatively small, but the subsequent labor production cost is high and the production efficiency is low. Due to the numerous processes, the accumulated assembly errors are not conducive to controlling the quality of the product.

[0003] for example Figure 1 In the distribution pipe, the first bracket and the second bracket are respectively located on both sides of the distribution pipe. According to the previous process, three brackets (i.e., the second bracket) are convexly welded to the distribution pipe, and the other bracket (i.e., the first bracket) needs to be convexly welded to the distribution pipe. Therefore, the previous technology requires two welding processes to complete the product, and the process is complicated.

[0004] Therefore, how to weld the multiple brackets on both sides of the distribution pipe to the distribution pipe at one time becomes a technical problem that needs to be solved. Utility Model Content

[0005] The utility model aims to provide a projection welding tool for a fuel distribution pipe and a bracket of an automobile, mainly solving the problem of how to weld a plurality of brackets on both sides of the distribution pipe to the distribution pipe at one time in the prior art.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a projection welding tool for automobile fuel distribution pipe and bracket, characterized in that: the projection welding tool comprises an upper base plate and a lower base plate, and a guide column is provided between the upper base plate and the lower base plate;

[0007] A first upper electrode and a second upper electrode are provided at the bottom of the upper base plate, and a first lower electrode and a second lower electrode are provided at the top of the lower base plate;

[0008] The top of the lower base plate is also provided with a third positioning device for positioning the distribution pipe, a third clamping device for clamping the distribution pipe, a first positioning device for fixing the first bracket on one side of the distribution pipe, a second positioning device for fixing the second bracket on the other side of the distribution pipe, a first group of cylinders for clamping the first bracket on one side of the distribution pipe, and a second group of cylinders for clamping the second bracket on the other side of the distribution pipe. The first upper electrode, the first bracket and the first lower electrode correspond in vertical position, and the second upper electrode, the second bracket and the second lower electrode correspond in vertical position.

[0009] Furthermore, the third positioning device includes a third fixed block, a third guide rod and a third positioning needle. The bottom end of the third fixed block is connected to the lower base plate. The third fixed block is also provided with a third limiting block. A third groove is formed between the third fixed block and the third limiting block. A third guide block is provided in the third groove. The top of the third guide rod passes through the third limiting block and is connected to the third guide block. The bottom end of the third positioning needle is connected to the third guide block. The top of the third positioning needle passes through the third fixed block and corresponds to the oil hole of the distribution pipe.

[0010] Furthermore, a third elastic portion is provided between the third guide block and the third limiting block;

[0011] And / or the top of the third guide rod extends out of the third guide block and then passes through the third fixed block, and the top of the third guide rod is also provided with a third stop portion.

[0012] Further, the third elastic part is a spring, and the third guide rod is nested in the spring;

[0013] The distance from the top of the third stop portion to the third guide block is smaller than the distance from the top of the third positioning pin to the third guide block;

[0014] A handle portion is provided at the bottom of the third guide rod;

[0015] And / or the third positioning device further includes a third V-shaped positioning block for fixing the position of the distribution pipe.

[0016] Furthermore, the third pressing device includes a third cylinder, which is fixed on the lower base plate. The movable rod of the third cylinder is connected to the third pressing block for pressing the distribution pipe, and the third cylinder drives the third pressing block to move up and down.

[0017] Further, the first positioning device includes a first positioning block, the first positioning block is provided with a first groove, the first lower electrode passes through the first positioning block, the top end of the first lower electrode corresponds to the first groove, and the first positioning blocks on both sides of the first groove are each provided with a first positioning pin;

[0018] The first group of cylinders includes two first cylinders, which are respectively located on both sides of the first positioning block. The movable end of each first cylinder is connected to a first positioning pin, and the two first positioning pins perform axial positioning on the first bracket.

[0019] Further, the second positioning device includes a second positioning block, the first positioning block is provided with a second groove for fixing the second bracket, the second lower electrode passes through the second positioning block, the top end of the second lower electrode corresponds to the second groove, and the second positioning blocks on both sides of the second groove are each provided with a second positioning pin;

[0020] The second group of cylinders includes two second cylinders, which are respectively located on both sides of the second positioning block. The movable end of each second cylinder is connected to a second positioning pin, and the two second positioning pins are used to axially position the second bracket.

[0021] Furthermore, the distribution pipe is fixed by a third clamping device and a third positioning device, the first bracket and the second bracket are pressed against corresponding welding positions on the distribution pipe, the first group of cylinders clamps the first bracket in the axial direction, the second group of cylinders clamps the second bracket in the axial direction, the upper base plate moves up and down along the guide column, the first upper electrode, the first bracket and the first lower electrode correspond in the vertical direction, and the second upper electrode, the second bracket and the second lower electrode correspond in the vertical direction.

[0022] Furthermore, an auxiliary fixing plate is provided on the top of the lower base plate, and the third positioning device, the third pressing device, the first positioning device, the second positioning device, the first group of cylinders, the second group of cylinders, the first lower electrode and the second lower electrode are all arranged on the auxiliary fixing plate.

[0023] Further, the first group of cylinders is a group corresponding to a first bracket, and the first bracket is located on one side of the distribution pipe;

[0024] The second group of cylinders consists of three groups, each group of cylinders corresponds to a second bracket, and the three second brackets are arranged in a straight line on the other side of the distribution pipe;

[0025] And / or the auxiliary fixing plate is provided with a plurality of positioning holes;

[0026] And / or the third pressing device and the guide column are located on the same side of the distribution pipe.

[0027] In view of the above technical features, the utility model has the following beneficial effects:

[0028] 1. The utility model is a projection welding tool for a fuel distribution pipe and a bracket of an automobile. The distribution pipe is fixed by a third positioning device and a third clamping device, the first bracket is positioned by a first positioning device, and the second bracket is positioned by a second positioning device. Then, the first bracket, the second bracket and the distribution pipe are welded at one time. The process is simple, the production effect is higher, the cost is saved, the assembly error is reduced, and the product welding quality is improved.

[0029] 2. The utility model is a projection welding tool for an automobile fuel distribution pipe and a bracket, which uses a third positioning device to circumferentially position the distribution pipe, thereby solving the problem of how to circumferentially position the distribution pipe, improving the welding accuracy between the bracket and the distribution pipe, and improving the product welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of an existing distribution pipe.

[0031] Figure 2 It is a structural schematic diagram of a projection welding tool for an automobile fuel distribution pipe and a bracket in specific embodiment 1.

[0032] Figure 3 It is an enlarged view of the third positioning device in specific embodiment 1.

[0033] Figure 4 It is a cross-sectional view of the second positioning device in specific embodiment 1.

[0034] Figure 5 It is a stereoscopic view of a projection welding tool for an automobile fuel distribution pipe and a bracket in specific embodiment 1.

[0035] Figure 6 It is a cross-sectional view of a projection welding tool for an automobile fuel distribution pipe and a bracket in specific embodiment 1.

[0036] In the figure: 1, upper base plate; 1-1, guide column;

[0037] 2. a first upper electrode;

[0038] 3. a first lower electrode;

[0039] 4. a second upper electrode;

[0040] 5. Second cylinder;

[0041] 6. The third V-shaped positioning block;

[0042] 7. Second positioning block; 7-1. Second groove;

[0043] 8. A second lower electrode;

[0044] 9. Second positioning pin;

[0045] 10. Third positioning device; 10-1. Third fixing block; 10-2. Third guide rod; 10-3. Third positioning pin; 10-4. Third groove; 10-5. Third guide block; 10-6. Third elastic part; 10-7. Third stop part; 10-8. Handle part; 10-9. Third limit block;

[0046] 11. The third cylinder; 11-1. The third pressing block;

[0047] 12. Auxiliary fixing plate; 12-1. Positioning hole;

[0048] 13. Lower base plate;

[0049] 14. Distribution pipe; 14-1. Oil hole;

[0050] 15-1, first bracket; 15-2, second bracket;

[0051] 16. first positioning block; 16-1. first groove;

[0052] 17. First positioning pin;

[0053] 18. First cylinder. DETAILED DESCRIPTION

[0054] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0055] See also Figures 1 to 6 , Specific embodiment 1, this embodiment 1 provides a projection welding tool for a fuel distribution pipe and a bracket of an automobile, the projection welding tool includes an upper base plate 1 and a lower base plate 13, a guide column 1-1 is provided between the upper base plate 1 and the lower base plate 13; a first upper electrode 2 and a second upper electrode 4 are provided at the bottom of the upper base plate 1, and a first lower electrode 3 and a second lower electrode 8 are provided at the top of the lower base plate 13.

[0056] The top of the lower base plate 13 is also provided with a third positioning device 10 for positioning the distribution pipe 14, a third clamping device for clamping the distribution pipe 14, a first positioning device for fixing the first bracket 15-1 on one side of the distribution pipe 14, a second positioning device for fixing the second bracket 15-2 on the other side of the distribution pipe 14, a first group of cylinders for clamping the first bracket 15-1 on one side of the distribution pipe 14, and a second group of cylinders for clamping the second bracket 15-2 on the other side of the distribution pipe 14. The first upper electrode 2, the first bracket 15-1 and the first lower electrode 3 correspond in vertical position, and the second upper electrode 4, the second bracket 15-2 and the second lower electrode 8 correspond in vertical position.

[0057] In this embodiment 1, during welding, the first bracket 15-1 is located directly above the distribution pipe 14, and the first bracket 15-1 corresponds to the corresponding welding position on the distribution pipe 14. The second bracket 15-2 is located directly below the distribution pipe 14, and the second bracket 15-2 corresponds to the corresponding welding position on the distribution pipe 14. This is used as an example for explanation, but is not limited to this. The positions of the first bracket 15-1 and the second bracket 15-2 can also be interchanged, and the invention purpose of this patent can also be achieved.

[0058] The first positioning device includes a first positioning block 16, the first positioning block 16 is provided with a first groove 16-1, the first lower electrode 3 passes through the first positioning block 16, the top of the first lower electrode 3 corresponds to the first groove 16-1, and the first positioning blocks 16 on both sides of the first groove 16-1 are each provided with a first positioning pin 17; the first group of cylinders includes two first cylinders 18, which are respectively located on both sides of the first positioning block 16 (for example Figure 1The first bracket 15-1 is welded to the distribution pipe 14 at the front and rear sides of the first bracket 15-1), and each first cylinder 18 is connected to a first positioning pin 17 at its movable end. The two first positioning pins 17 are used to axially position the first bracket 15-1. When the distribution pipe 14 is placed at the designated position, the distribution pipe 14 is placed in the first groove 16-1, and the first bracket 15-1 is placed on the distribution pipe 14 at the corresponding position for welding the first bracket 15-1. Then, the two first cylinders 18 drive the two first positioning pins 17 to move synchronously toward the first bracket 15-1, until the two first positioning pins 17 are respectively embedded in the first bracket 15-1 from both ends of the first bracket 15-1. The two first positioning pins 17 clamp the first bracket 15-1 from both ends of the first bracket 15-1 to achieve axial positioning on the first bracket 15-1, avoid accidental movement of the first bracket 15-1, ensure the position accuracy between the first bracket 15-1 and the distribution pipe 14, and ensure a good welding effect in the future.

[0059] The second positioning device includes a second positioning block 7, the first positioning block 16 is provided with a second groove 7-1 for fixing the second bracket 15-2, the second lower electrode 8 passes through the second positioning block 7, the top of the second lower electrode 8 corresponds to the second groove 7-1, and the second positioning blocks 7 on both sides of the second groove 7-1 are each provided with a second positioning pin 9; the second group of cylinders includes two second cylinders 5, which are respectively located on both sides of the second positioning block 7, and each second cylinder 5 is connected to a second positioning pin 9 at its movable end, and the two second positioning pins 9 perform axial positioning on the second bracket 15-2. Before placing the distribution pipe 14, first place the second bracket 15-2 in the corresponding second groove 7-1, and then after placing the distribution pipe 14 to the specified position, the corresponding position on the distribution pipe 14 for welding the second bracket 15-2 is close to the second bracket 15-2, and then the two second cylinders 5 respectively drive the two second positioning pins 9 to move synchronously toward the second bracket 15-2 until the two second positioning pins 9 are respectively embedded in the second bracket 15-2 from both ends of the second bracket 15-2, and the two second positioning pins 9 clamp the second bracket 15-2 from both ends of the second bracket 15-2 to achieve axial positioning on the second bracket 15-2, avoid accidental movement of the second bracket 15-2, ensure the position accuracy between the second bracket 15-2 and the distribution pipe 14, and ensure a good subsequent welding effect.

[0060] The third positioning device 10 includes a third fixed block 10-1, a third guide rod 10-2 and a third positioning needle 10-3. The bottom end of the third fixed block 10-1 is connected to the lower bottom plate 13. The third fixed block 10-1 is also provided with a third limit block 10-9. A third groove 10-4 is formed between the third fixed block 10-1 and the third limit block 10-9. A third guide block 10-5 is provided in the third groove 10-4. The top of the third guide rod 10-2 passes through the third limit block 10-9 and is connected to the third guide block 10-5. The bottom end of the third positioning needle 10-3 is connected to the third guide block 10-5. The top of the third positioning needle 10-3 passes through the third fixed block 10-1 and corresponds to the oil hole 14-1 of the distribution pipe 14. The third positioning device 10 also includes a third V-shaped positioning block 6 for fixing the position of the distribution pipe 14. For example, there are two third V-shaped positioning blocks 6, which fix the two ends of the distribution pipe 14 respectively. The top of the third positioning needle 10 - 3 is tapered, so that the top of the third positioning needle 10 - 3 can be accurately embedded in the oil hole 14 - 1 .

[0061] When the distribution tube 14 is placed on the third V-shaped positioning block 6 (i.e., the distribution tube 14 is pre-positioned), the operator pulls the third guide rod 10-2 downward, the third guide rod 10-2 drives the third guide block 10-5 to move downward, the third guide block 10-5 drives the third positioning pin 10-3 to move downward, so that the top of the third positioning pin 10-3 leaves the distribution tube 14, and then the distribution tube 14 is rotated circumferentially so that the oil hole 14-1 of the distribution tube 14 is aligned with the third positioning pin 10-3, and finally the third guide rod 10-2 is pushed upward, and the third guide rod 10-2 drives the third guide block 10- 5 moves upward, and the third guide block 10-5 drives the third positioning pin 10-3 to move upward until the top of the third positioning pin 10-3 is embedded in the oil hole 14-1 of the distribution pipe 14, so as to realize the circumferential positioning function of the third positioning pin 10-3 on the distribution pipe 14, thereby preventing the distribution pipe 14 from moving circumferentially when the distribution pipe 14 and the first bracket 15-1 and the second bracket 15-2 are projection welded, resulting in the distribution pipe 14 and the first bracket 15-1, The second bracket 15-2 The projection welding position does not correspond, and is not accurate, thereby affecting the projection welding quality of the distribution pipe 14 and the first bracket 15-1, The second bracket 15-2.

[0062] A third elastic part 10-6 is provided between the third guide block 10-5 and the third limit block 10-9. The third elastic part 10-6 is always in a compressed state. When the third guide rod 10-2 drives the third guide block 10-5 to move downward, the third guide block 10-5 synchronously further compresses the third elastic part 10-6. When the oil hole 14-1 of the distribution pipe 14 is aligned with the third positioning pin 10-3, the operator only needs to release the third guide rod 10-2. The further compressed third elastic part 10-6 will automatically push the third guide block 10-5 to move upward. The third guide block 10-5 drives the third positioning pin 10-3 to move upward until the top of the third positioning pin 10-3 is embedded in the oil hole 14-1 of the distribution pipe 14, thereby realizing the circumferential positioning function of the third positioning pin 10-3 on the distribution pipe 14. Moreover, when the third elastic part 10-6 pushes the third guide block 10-5 to the top (that is, the third guide block 10-5 is against the third fixed block 10-1), the third elastic part 10-6 is still in a compressed state and will still support the third guide block 10-5, ensuring that the top of the third positioning pin 10-3 is always embedded in the oil hole 14-1 of the distribution pipe 14 to avoid accidental slipping out. In this way, the circumferential positioning operation of the distribution pipe 14 is more convenient and the positioning effect is more stable.

[0063] Preferably, the third elastic part 10-6 is a spring, and the third guide rod 10-2 is nested in the spring, with reasonable space design and convenient installation to avoid loss of the spring.

[0064] Preferably, the top of the third guide rod 10-2 extends out of the third guide block 10-5 and then passes through the third fixed block 10-1. At this time, the third guide rod 10-2 passes through the third limit block 10-9 and the third fixed block 10-1, which can fix the stretching track of the third guide rod 10-2 moving up and down, and it is more convenient to move the third guide rod 10-2. A third stop portion 10-7 is also provided on the top of the third guide rod 10-2. When the operator pulls the third guide rod 10-2 downward, the third stop portion 10-7 moves downward synchronously until the third stop portion 10-7 abuts against the third fixed block 10-1, so as to prevent the third guide rod 10-2 from slipping and separating from the third fixed block 10-1.

[0065] Preferably, the distance from the top of the third stop portion 10-7 to the third guide block 10-5 is smaller than the distance from the top of the third positioning needle 10-3 to the third guide block 10-5, so as to avoid the third stop portion 10-7 interfering with the positioning operation of the third positioning needle 10-3 and the oil hole 14-1 on the distribution pipe 14.

[0066] A handle portion 10-8 is provided at the bottom of the third guide rod 10-2, such as a spherical handle portion 10-8, which is convenient for grabbing and moving the third guide rod 10-2.

[0067] The third clamping device includes a third cylinder 11, which is fixed on the lower base plate 13 (or the auxiliary fixing plate 12 on the lower base plate 13), and the movable rod of the third cylinder 11 is connected to the third pressing block 11-1 used to press the distribution pipe 14. The third cylinder 11 drives the third pressing block 11-1 to move up and down, so that the third pressing block 11-1 presses the distribution pipe 14 (that is, cooperates with the third V-shaped positioning block 6 to position the distribution pipe 14 in the vertical direction) to facilitate welding, and the third pressing block 11-1 releases the distribution pipe 14 to facilitate the upper and lower parts of the distribution pipe 14 and the second bracket 15-2. For example, the third cylinder 11 is a rotating cylinder, which is convenient for removing the distribution pipe after welding.

[0068] The distribution pipe 14 is fixed by the third clamping device and the third positioning device 10, the first bracket 15-1 and the second bracket 15-2 are tightly attached to the corresponding welding position on the distribution pipe 14, the first group of cylinders clamp the first bracket 15-1 in the axial direction, the second group of cylinders clamp the second bracket 15-2 in the axial direction, the upper base plate 1 moves up and down along the guide column 1-1, the first upper electrode 2, the first bracket 15-1 and the first lower electrode 3 correspond in the vertical direction, the second upper electrode 4, the second bracket 15-2 and the second lower electrode 8 correspond in the vertical direction, when the upper base plate 1 moves down until the first upper electrode 2 presses the first bracket 15-1, the distribution pipe 14 below the first bracket 15-1 is pressed on the first lower electrode 3, the second upper electrode 4 presses the distribution pipe 14 above the second bracket 15-2, and the second bracket 15-2 is pressed on the second lower electrode 8, which is convenient for subsequent projection welding.

[0069] An auxiliary fixing plate 12 is provided on the top of the lower bottom plate 13, and the third positioning device 10, the third pressing device, the first positioning device, the second positioning device, the first group of cylinders, the second group of cylinders, the first lower electrode 3 and the second lower electrode 8 are all arranged on the auxiliary fixing plate 12. A plurality of positioning holes 12-1 are provided on the auxiliary fixing plate 12, and the first positioning block 16, the first lower electrode 3 and the first cylinder 18 can be fixed in different positioning holes 12-1, and the positions of the first positioning block 16, the first lower electrode 3 and the first cylinder 18 are adjusted as a whole; the second positioning block 7, the second lower electrode 8 and the second cylinder 5 can be fixed in different positioning holes 12-1, and the positions of the second positioning block 7, the second lower electrode 8 and the second cylinder 5 are adjusted as a whole to meet the needs of different models of distribution pipes 14 for one-time welding of different side brackets of the distribution pipes 14.

[0070] The third pressing device and the guide column 1-1 are located on the same side of the distribution pipe 14 (eg Figure 1 When the upper bottom plate 1 moves upward and the third pressing block 11-1 moves upward, the distribution pipe 14 is conveniently connected to the other side of the lower bottom plate 13 (such as Figure 1 Lower base plate 13 front side) upper and lower parts.

[0071] In this embodiment 1, the first group of cylinders is a group, corresponding to a first bracket 15-1, and the first bracket 15-1 is located on one side of the distribution pipe 14; the second group of cylinders is three groups, each group of cylinders corresponds to a second bracket 15-2, and the three second brackets 15-2 are arranged in a straight line on the other side of the distribution pipe 14. A projection welding tool for an automobile fuel distribution pipe and bracket can weld the first bracket 15-1 and the second bracket 15-2 on both sides of the distribution pipe 14 to the distribution pipe 14 at one time, realizing one-time assembly, and welding four brackets to the distribution pipe 14 at one time, thereby improving work efficiency, saving labor, reducing costs, and improving product quality.

[0072] The projection welding tool used for the automobile fuel distribution pipe and the bracket in this embodiment 1 has the following operating steps:

[0073] First, the upper base plate 1 moves upward with the first upper electrode 2 and the second upper electrode 4, and the three second brackets 15-2 are respectively placed in the second grooves 7-1 of the three corresponding second positioning blocks 7, and then the second positioning pins 9 are driven by the second cylinder 5 to clamp the second brackets 15-2. At this time, the bottom of the second bracket 15-2 is close to the second lower electrode 8.

[0074] Secondly, place the distribution tube 14 in the V-shaped groove of the third V-shaped positioning block 6, rotate the distribution tube 14, and embed the top of the third positioning pin 10-3 into the oil hole 14-1 of the distribution tube 14. At this time, the distribution tube 14 is pressed on the three second brackets 15-2, and the second brackets 15-2 correspond to the position on the distribution tube 14 for welding the second bracket 15-2.

[0075] Again, place the first bracket 15-1 on the distribution tube 14 at the position for welding the first bracket 15-1. At this time, the first bracket 15-1 is placed in the first groove 16-1, and then the first positioning pin 17 is driven by the first cylinder 18 to clamp the first bracket 15-1. At this time, the bottom of the distribution tube 14 below the first bracket 15-1 is close to the first lower electrode 3.

[0076] Finally, the upper base plate 1 moves downward with the first upper electrode 2 and the second upper electrode 4 until the first upper electrode 2 is pressed against the first bracket 15-1 and the second lower electrode 8 is pressed against the second bracket 15-2. After power is turned on, the synchronous projection welding of the first bracket 15-1, the second bracket 15-2 and the distribution pipe 14 is completed.

[0077] The projection welding tool comprises a control mechanism, which controls the operation of the first cylinder 18, the second cylinder 5 and the third cylinder 11 to realize the automation of projection welding.

[0078] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A projection welding tool for automobile fuel distribution pipe and bracket, characterized in that: The projection welding tool comprises an upper base plate (1) and a lower base plate (13), wherein a guide column (1-1) is provided between the upper base plate (1) and the lower base plate (13); A first upper electrode (2) and a second upper electrode (4) are provided at the bottom of the upper base plate (1), and a first lower electrode (3) and a second lower electrode (8) are provided at the top of the lower base plate (13); The top of the lower base plate (13) is also provided with a third positioning device (10) for positioning the distribution pipe (14), a third pressing device for pressing the distribution pipe (14), a first positioning device for fixing the first bracket (15-1) on one side of the distribution pipe (14), a second positioning device for fixing the second bracket (15-2) on the other side of the distribution pipe (14), a first group of cylinders for clamping the first bracket (15-1) on one side of the distribution pipe (14), and a second group of cylinders for clamping the second bracket (15-2) on the other side of the distribution pipe (14). The first upper electrode (2), the first bracket (15-1) and the first lower electrode (3) correspond in vertical position, and the second upper electrode (4), the second bracket (15-2) and the second lower electrode (8) correspond in vertical position.

2. A projection welding tool for a fuel distribution pipe and a bracket of an automobile according to claim 1, characterized in that: The third positioning device (10) comprises a third fixed block (10-1), a third guide rod (10-2) and a third positioning needle (10-3); the bottom end of the third fixed block (10-1) is connected to the lower bottom plate (13); a third limiting block (10-9) is also provided on the third fixed block (10-1); a third groove (10-4) is formed between the third fixed block (10-1) and the third limiting block (10-9); a third guide block (10-5) is provided in the third groove (10-4); the top of the third guide rod (10-2) passes through the third limiting block (10-9) and is connected to the third guide block (10-5); the bottom end of the third positioning needle (10-3) is connected to the third guide block (10-5); the top of the third positioning needle (10-3) passes through the third fixed block (10-1) and corresponds to the oil through hole (14-1) of the distribution pipe (14).

3. A projection welding tool for a fuel distribution pipe and a bracket of an automobile according to claim 2, characterized in that: A third elastic portion (10-6) is provided between the third guide block (10-5) and the third limiting block (10-9); And / or the top of the third guide rod (10-2) extends out of the third guide block (10-5) and then passes through the third fixed block (10-1), and the top of the third guide rod (10-2) is also provided with a third stop portion (10-7).

4. A projection welding tool for a fuel distribution pipe and a bracket of an automobile according to claim 3, characterized in that: The third elastic part (10-6) is a spring, and the third guide rod (10-2) is nested in the spring; The distance from the top of the third stop portion (10-7) to the third guide block (10-5) is smaller than the distance from the top of the third positioning needle (10-3) to the third guide block (10-5); A handle portion (10-8) is provided at the bottom of the third guide rod (10-2); And / or the third positioning device (10) further comprises a third V-shaped positioning block (6) for fixing the position of the distribution pipe (14).

5. A projection welding tool for a fuel distribution pipe and a bracket of an automobile according to claim 1, 2, 3 or 4, characterized in that: The third pressing device comprises a third cylinder (11), the third cylinder (11) is fixed on the lower base plate (13), a movable rod of the third cylinder (11) is connected to a third pressing block (11-1) for pressing the distribution pipe (14), and the third cylinder (11) drives the third pressing block (11-1) to move up and down.

6. A projection welding tool for automobile fuel distribution pipe and bracket according to claim 5, characterized in that: The first positioning device comprises a first positioning block (16), the first positioning block (16) is provided with a first groove (16-1), the first lower electrode (3) passes through the first positioning block (16), the top end of the first lower electrode (3) corresponds to the first groove (16-1), and the first positioning blocks (16) on both sides of the first groove (16-1) are each provided with a first positioning pin (17); The first group of cylinders includes two first cylinders (18) respectively located on both sides of the first positioning block (16); a movable end of each first cylinder (18) is connected to a first positioning pin (17); and the two first positioning pins (17) perform axial positioning on the first bracket (15-1).

7. A projection welding tool for automobile fuel distribution pipe and bracket according to claim 6, characterized in that: The second positioning device comprises a second positioning block (7), the first positioning block (16) is provided with a second groove (7-1) for fixing the second bracket (15-2), the second lower electrode (8) passes through the second positioning block (7), the top end of the second lower electrode (8) corresponds to the second groove (7-1), and the second positioning blocks (7) on both sides of the second groove (7-1) are each provided with a second positioning pin (9); The second group of cylinders includes two second cylinders (5) respectively located on both sides of the second positioning block (7); a second positioning pin (9) is connected to the movable end of each second cylinder (5); and the two second positioning pins (9) perform axial positioning on the second bracket (15-2).

8. A projection welding tool for automobile fuel distribution pipe and bracket according to claim 7, characterized in that: The distribution pipe (14) is fixed by a third clamping device and a third positioning device (10); the first bracket (15-1) and the second bracket (15-2) are closely attached to corresponding welding positions on the distribution pipe (14); the first group of cylinders clamps the first bracket (15-1) in the axial direction; the second group of cylinders clamps the second bracket (15-2) in the axial direction; the upper base plate (1) moves up and down along the guide column (1-1); the first upper electrode (2), the first bracket (15-1) and the first lower electrode (3) correspond in vertical position; and the second upper electrode (4), the second bracket (15-2) and the second lower electrode (8) correspond in vertical position.

9. A projection welding tool for a fuel distribution pipe and a bracket of an automobile according to claim 8, characterized in that: An auxiliary fixing plate (12) is provided on the top of the lower base plate (13), and the third positioning device (10), the third pressing device, the first positioning device, the second positioning device, the first group of cylinders, the second group of cylinders, the first lower electrode (3) and the second lower electrode (8) are all arranged on the auxiliary fixing plate (12).

10. A projection welding tool for automobile fuel distribution pipe and bracket according to claim 9, characterized in that: The first group of cylinders is a group corresponding to a first bracket (15-1), and the first bracket (15-1) is located on one side of the distribution pipe (14); The second group of cylinders consists of three groups, each group of cylinders corresponds to a second bracket (15-2), and the three second brackets (15-2) are arranged in a straight line on the other side of the distribution pipe (14); and / or a plurality of positioning holes (12-1) are provided on the auxiliary fixing plate (12); and / or the third pressing device and the guide column (1-1) are located on the same side of the distribution pipe (14); and / or the third cylinder (11) is a rotary cylinder; And / or the top of the third positioning needle (10-3) is conical.

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