Diffuser resistance welding equipment

Abstract

The utility model relates to the technical field of diffuser welding, and specifically to a diffuser resistance welding device, including a frame, a clamping cylinder is provided on the frame, the clamping cylinder is used to position and clamp a diaphragm, a linear servo module is provided on one side of the frame, a slide cylinder is provided on the slide of the linear servo module, the slide of the slide cylinder can move in the vertical direction, a rotating cylinder is provided on the slide of the slide cylinder, a suction cup is provided on the rotating structure of the rotating cylinder, a lower electrode and a centering mechanism are provided on the frame on one side of the clamping cylinder, and the centering mechanism is used to center and position the diffuser in the placement hole of the lower electrode; a downward pressure cylinder is provided on the frame above the lower electrode, the piston rod of the downward pressure cylinder extends downward and is connected to the upper electrode, a suction nozzle is provided on the lower end surface of the upper electrode, and the upper electrode corresponds to the lower electrode below; the suction cup can grasp the diaphragm on the clamping cylinder downward, and can transfer the diaphragm to the bottom of the suction nozzle upward. The application can improve the resistance welding quality of the diffuser.

Description

Technical Field

[0001] The utility model relates to the technical field of diffuser welding, in particular to a diffuser resistance welding device. Background Art

[0002] A diffuser is usually provided on the gas generating explosion device of the airbag system. One end of the diffuser is connected to the explosion device, and the other end extends into the airbag. A diaphragm is welded at the opening of one end of the diffuser located inside the airbag. When the explosion device explodes, a large amount of gas is generated in a short period of time. The instantly expanding gas has a strong impact force that can break off the diaphragm, and the gas quickly enters the airbag, causing the airbag to inflate.

[0003] Welding diffusers and diaphragms is usually done with a resistance welding machine. The welding principle of the resistance welding machine is to use the resistance heat generated by the current passing through the weldment and its contact as a heat source to locally heat the weldment to a molten or plastic state, and to achieve welding under pressure. During the resistance welding process, a large amount of heat is generated at the contact part between the diffuser and the diaphragm, so that the diffuser and the diaphragm are fused together. This method does not require filler metal, has high productivity, small weld deformation and is easy to automate. When using resistance welding, pressure is usually applied to the workpiece to help the molten metal fuse and form a strong weld joint.

[0004] In the related art, before resistance welding the diffuser and the diaphragm, the diffuser is first placed in the placement hole of the lower electrode, and then the diaphragm is placed in the center of the upper end of the diffuser, and then the diaphragm is pressed onto the welding end face of the diffuser through the upper electrode, and then the resistance welding can begin; this process requires ensuring the centering positioning of the diaphragm and the diffuser, otherwise the diaphragm is likely to be displaced after welding, thereby affecting the welding quality; the above-mentioned steps of placing the diaphragm are usually performed manually, and the manual positioning efficiency is low, and it is difficult to manually ensure that the diaphragm is located in the center of the welding end face of the diffuser, resulting in the inability to guarantee the welding quality of the diffuser, and thus resulting in a high welding scrap rate. Utility Model Content

[0005] The utility model aims to provide a diffuser resistance welding device to improve the problem that the quality of the resistance welded diffuser and the diaphragm cannot be guaranteed.

[0006] The utility model is realized by the following technical solutions:

[0007] A diffuser resistance welding device comprises a frame, a clamping cylinder is arranged on the frame, the clamping cylinder is used to position and clamp a diaphragm, a linear servo module is arranged on one side of the frame, a slide cylinder is arranged on the slide of the linear servo module, the slide of the slide cylinder can move in a vertical direction, a rotating cylinder is arranged on the slide of the slide cylinder, a suction cup is arranged on the rotating structure of the rotating cylinder, a lower electrode and a centering mechanism are arranged on the frame on one side of the clamping cylinder, the centering mechanism is used to center and position the diffuser in the placement hole of the lower electrode; a downward pressure cylinder is arranged on the frame above the lower electrode, the piston rod of the downward pressure cylinder extends downward and is connected to the upper electrode, a suction nozzle is opened on the lower end surface of the upper electrode, and the upper electrode corresponds to the lower electrode below; the suction cup rotates downward to grab the diaphragm on the clamping cylinder, and rotates upward to transfer the diaphragm to the bottom of the suction nozzle.

[0008] Furthermore, when the two clamping jaws of the clamping jaw cylinder are clamped together, a circular notch that can clamp the diaphragm is formed, and the central axis of the circular notch is vertically arranged.

[0009] Furthermore, the centering mechanism includes a mounting plate, a centering cylinder, a fixed ring and a rotating ring, the mounting plate is located on the frame, a through hole is opened on the mounting plate, the lower electrode extends to the top of the mounting plate after passing through the through hole, the fixed ring is located on the mounting plate, the edge of the rotating ring is circumferentially provided with an outer edge, the rotating ring is located on the inner ring of the fixed ring, the outer diameter of the rotating ring is adapted to the inner diameter of the inner ring of the fixed ring, and the outer edge is overlapped on the fixed ring; a plurality of slide rails are arranged at circumferential intervals on the mounting plate along the placement hole of the lower electrode, the length direction of the plurality of slide rails is consistent with the corresponding radial direction of the fixed ring, and each of the slide rails has An abutment block is slidably arranged along the length direction of the corresponding slide rail, one end of the abutment block close to the lower electrode is used to abut against the diffuser, and the other end is provided with a toggle portion, and a plurality of toggle grooves are provided on the bottom wall of the rotating ring, and the distance from one end of the plurality of toggle grooves to the lower electrode is greater than the distance from the other end to the lower electrode, and the plurality of toggle portions are all located in the corresponding toggle grooves, and when the rotating ring rotates, the toggle portion moves in the corresponding toggle groove, and the abutment block slides on the slide rail; a connecting plate is provided on the rotating ring, one end of the centering cylinder is hinged to the mounting plate, and the other end is hinged to one end of the connecting plate extending to the outside of the fixed ring.

[0010] Furthermore, a lower pressure plate is provided on the piston rod of the lower pressure cylinder, the upper electrode is placed under the lower pressure plate, a slider is provided on the lower pressure plate, a vertical guide plate is provided on the frame, guide grooves are provided on both sides of the guide plate along the length direction of the guide plate, and two opposing guide blocks are provided on the slider, and the two guide blocks are respectively located in the corresponding guide grooves and slideably cooperate with the guide grooves.

[0011] Furthermore, a connecting rod is connected to the end of the piston rod of the downward pressure cylinder, a limiting groove is provided at the lower end of the connecting rod, a mounting shell is arranged above the downward pressure plate, the bottom of the connecting rod passes through the top wall of the mounting shell and extends to the inside of the mounting shell, and the top wall of the mounting shell is limited in the limiting groove, a pressure sensor is arranged on the bottom wall of the mounting shell, and when the downward pressure cylinder drives the diaphragm to squeeze the diffuser below, the connecting rod squeezes the pressure sensor.

[0012] Furthermore, a contact displacement sensor is arranged on the lower pressure plate. When the lower pressure cylinder drives the diaphragm to squeeze the diffuser below, the contact displacement sensor is pressed against the upper surface of the rotating ring below.

[0013] Furthermore, a material receiving plate is provided on the frame, a material receiving trough is provided on the material receiving plate, an opening is provided on one side wall of the material receiving trough, the clamping cylinder is located on the material receiving plate, and a circular notch formed when the two clamping jaws of the clamping cylinder are clamped is located directly above the material receiving trough, a passage hole with a diameter smaller than the circular notch is provided on the bottom wall of the material receiving trough, a lifting cylinder is provided below the material receiving plate, a lifting rod is provided at the lifting end of the lifting cylinder, and when the lifting cylinder is lifted upward, the push rod passes through the passage hole and extends into the circular notch.

[0014] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0015] In the utility model, when using the resistance welding equipment of this scheme, the diffuser is first placed in the placement hole of the lower electrode, and the diffuser is centered and positioned by the centering mechanism, and then the diaphragm is placed between the two clamping jaws of the clamping jaw cylinder, so that the clamping jaw cylinder positions and clamps the diaphragm, and the slide cylinder and the rotating cylinder are moved to a position close to the clamping jaw cylinder through the linear servo module. The rotating cylinder can make the suction cup face downward, and the slide cylinder drives the suction cup to move downward, so that the open end of the suction cup extends into the circular notch, thereby allowing the suction cup to absorb the diaphragm, and then the slide cylinder drives the suction cup to rise, and the rotating cylinder drives the suction cup to rotate 180°, so that the diaphragm is located above the suction cup, and the diaphragm can be moved to the position of the clamping jaw cylinder again through the linear servo module. Directly below the suction nozzle of the upper electrode, the slide cylinder can make the diaphragm approach the suction nozzle, the suction nozzle can suck the diaphragm, and then the slide cylinder is transferred, and then the diaphragm is driven to move down by the downward pressure cylinder and squeezed on the welding end face of the upper end of the diffuser; because the gripper cylinder, the downward pressure cylinder, the suction nozzle and the lower electrode are fixed relative to the linear servo module, and the diaphragm is positioned in the circular notch, the linear servo module can conveniently control the position and displacement of the suction cup, so that the suction cup can directly absorb the diaphragm and transfer the diaphragm to directly below the suction nozzle, and then the downward pressure cylinder can press the diaphragm in the middle position above the diffuser, thereby realizing the centering of the diffuser and the diaphragm, which is beneficial to ensure the welding quality between the diffuser and the diaphragm and reduce the welding scrap rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model.

[0017] In the attached picture:

[0018] Figure 1 It is a partial structural diagram of the utility model;

[0019] Figure 2 For the utility model Figure 1 Enlarged view of part A in the middle;

[0020] Figure 3 For the utility model Figure 1 Enlarged view of middle part B;

[0021] Figure 4 It is a partial structural diagram of the utility model;

[0022] Figure 5 For the utility model Figure 4 Enlarged view of middle C;

[0023] Figure 6 For the utility model Figure 4 Enlarged view of the middle D part;

[0024] Figure 7 This is a partial structural diagram of the utility model, which is intended to show the structure of the material receiving plate.

[0025] Marks and corresponding parts names in the attached drawings:

[0026] 1. Frame; 2. Gripper cylinder; 3. Linear servo module; 4. Slide cylinder; 5. Rotary cylinder; 6. Suction cup; 7. Lower electrode; 8. Lower pressure cylinder; 9. Upper electrode; 10. Suction nozzle; 11. Transformer; 12. Circular notch; 13. Mounting plate; 14. Centering cylinder; 15. Fixed ring; 16. Rotating ring; 17. Through hole; 18. Placement groove; 19. Outer edge; 20. Slide rail; 21. Abutment block ; 22. Toggle part; 23. Toggle groove; 24. Connecting plate; 25. Lower pressure plate; 26. Slider; 27. Guide plate; 28. Connecting rod; 29. ​​Mounting shell; 30. Pressure sensor; 31. Contact displacement sensor; 32. Receiving plate; 33. Receiving groove; 34. Passage hole; 35. Lifting cylinder; 36. Push rod; 37. Vibrating disk; 38. Safety cylinder; 39. Safety plate; 40. Diffuser. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the embodiments and drawings. The schematic implementation mode and description of the utility model are only used to explain the utility model and are not intended to limit the utility model. It should be noted that the utility model is already in the actual development and use stage.

[0028] Example 1

[0029] A diffuser resistance welding device, referring to Figure 1 , Figure 2 , Figure 3 , including a frame 1, on which a clamping cylinder 2 is arranged, the clamping cylinder 2 is used to position and clamp the diaphragm, a linear servo module 3 is arranged on one side of the frame 1, a slide cylinder 4 is arranged on the slide of the linear servo module 3, the slide of the slide cylinder 4 can move in the vertical direction, a rotating cylinder 5 is arranged on the slide of the slide cylinder 4, and a suction cup 6 is arranged on the rotating structure of the rotating cylinder 5, a lower electrode 7 and a centering mechanism are arranged on the frame 1 on one side of the clamping cylinder 2, and the centering mechanism is used to center and position the diffuser 40 in the placement hole of the lower electrode 7; a downward pressure cylinder 8 is arranged on the frame 1 above the lower electrode 7, the piston rod of the downward pressure cylinder 8 extends downward and is connected to the upper electrode 9, and a suction nozzle 10 is opened on the lower end surface of the upper electrode 9, and the upper electrode 9 corresponds to the lower electrode 7 below; the suction cup 6 rotates downward to grab the diaphragm on the clamping cylinder 2, and rotates upward to transfer the diaphragm to the bottom of the suction nozzle 10. The downward pressure cylinder 8 is a double force booster cylinder. The upper electrode 9 is electrically connected to the lower electrode 7 through a transformer 11. The upper electrode 9 is provided with a suction cavity connected to a suction pipe, and the suction cavity is connected to a suction nozzle 10. When the diaphragm is attached to the suction nozzle 10, the air in the suction cavity is pumped out, and the suction of the diaphragm by the suction nozzle 10 can be realized.

[0030] In this scheme, when using the resistance welding equipment of this scheme, the diffuser 40 is first placed in the placement hole of the lower electrode 7, and the diffuser 40 is centered and positioned by the centering mechanism, and then the diaphragm is placed between the two clamping jaws of the clamping jaw cylinder 2, so that the clamping jaw cylinder 2 positions and clamps the diaphragm, and the slide cylinder 4 and the rotating cylinder 5 are moved to a position close to the clamping jaw cylinder 2 by the linear servo module 3, and the rotating cylinder 5 can make the suction cup 6 face downward, and the slide cylinder 4 drives the suction cup 6 to move downward, so that the open end of the suction cup 6 extends into the circular notch 12, so that the suction cup 6 absorbs the diaphragm, and then the slide cylinder 4 drives the suction cup 6 to rise, and the rotating cylinder 5 drives the suction cup 6 to rotate 180°, so that the diaphragm is located above the suction cup 6, and the diaphragm can be moved to the suction nozzle 10 of the upper electrode 9 by the linear servo module 3 again. Directly below, the slide cylinder 4 can make the diaphragm approach the suction nozzle 10, and the suction nozzle 10 can suck the diaphragm, and then the slide cylinder 4 is moved to one side, and then the diaphragm is driven to move down and squeezed on the welding end face of the upper end of the diffuser 40 by the downward pressure cylinder 8; because the clamping cylinder 2, the downward pressure cylinder 8, the suction nozzle 10 and the lower electrode 7 are fixed relative to the linear servo module 3, and the diaphragm is positioned in the circular notch 12, the linear servo module 3 can conveniently control the position and displacement of the suction cup 6, so that the suction cup 6 can directly absorb the diaphragm and transfer the diaphragm to directly below the suction nozzle 10, and then it is convenient for the downward pressure cylinder 8 to press the diaphragm in the middle position above the diffuser 40, so as to realize the centering of the diffuser 40 and the diaphragm, and the centering accuracy is high, which is beneficial to ensure the welding quality between the diffuser 40 and the diaphragm and reduce the welding scrap rate.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that in this embodiment, referring to Figure 2 When the two clamping jaws of the clamping jaw cylinder 2 are clamped together, a circular notch 12 for clamping the diaphragm is formed, and the central axis of the circular notch 12 is vertically arranged. The shape and size of the circular notch 12 are adapted to the diaphragm, so that the clamping jaw cylinder 2 can position and clamp the diaphragm more stably. The other structures of this embodiment are the same as those of the embodiment 1, so they are not described in detail.

[0033] Example 3

[0034] The difference between this embodiment and embodiment 1 is that in this embodiment, referring to Figure 2 , Figure 3 , combined with Figure 4 , Figure 5The centering mechanism includes a mounting plate 13, a centering cylinder 14, a fixed ring 15 and a rotating ring 16. The mounting plate 13 is located on the frame 1. A through hole 17 is opened on the mounting plate 13. The lower electrode 7 extends to the top of the mounting plate 13 after passing through the through hole 17. The fixed ring 15 is located on the mounting plate 13. The inner ring edge of the upper surface of the fixed ring 15 is provided with a placement groove 18. The edge of the rotating ring 16 is circumferentially provided with an outer edge 19. The rotating ring 16 is located in the inner ring of the fixed ring 15, and the outer diameter of the rotating ring 16 is matched with the inner diameter of the inner ring of the fixed ring 15, and the outer edge 19 is located in the placement groove 18; a plurality of slide rails 20 are arranged at intervals along the circumference of the placement hole of the lower electrode 7 on the mounting plate 13, and the length directions of the plurality of slide rails 20 are consistent with the corresponding radial directions of the fixed ring 15, and each slide rail 20 is provided with a stopper slidably along the length direction of the corresponding slide rail 20 A contact block 21, one end of the contact block 21 close to the lower electrode 7 is used to abut against the outer wall of the diffuser 40, and the other end is provided with a toggle portion 22. A plurality of toggle grooves 23 are provided on the bottom wall of the rotating ring 16. The distance from one end of the plurality of toggle grooves 23 to the lower electrode 7 is greater than the distance from the other end to the lower electrode 7. The plurality of toggle portions 22 are all located in the corresponding toggle grooves 23. When the rotating ring 16 rotates, the toggle portions 22 move in the corresponding toggle grooves 23. At the same time, the contact block 21 slides on the slide rail 20. A gap is left between the fixed ring 15 and the mounting plate 13. A connecting plate 24 is provided at the bottom of the rotating ring 16. One end of the connecting plate 24 away from the rotating ring 16 extends to the outside of the fixed ring 15 through the above-mentioned gap. One end of the centering cylinder 14 is hinged to the mounting plate 13, and the other end is hinged to one end of the connecting plate 24 extending to the outside of the fixed ring 15. Specifically, when the centering cylinder 14 is shortened, the toggle portion 22 moves toward the direction close to the lower electrode 7 under the action of the toggle groove 23, so that the multiple abutment blocks 21 center and clamp the diffuser 40 in the middle; when the centering cylinder 14 is extended, the toggle portion 22 moves toward the direction away from the lower electrode 7 under the action of the toggle groove 23, so that the multiple abutment blocks 21 release the centering clamping and positioning of the diffuser 40, which is convenient for taking out the diffuser 40; because the inner diameter of the placement hole of the lower electrode 7 is usually larger than the outer diameter of the corresponding part of the diffuser 40, the above-mentioned centering mechanism can realize the centering positioning of the diffuser 40 in the placement hole of the lower electrode 7, and it is convenient to position the diffusers 40 with different outer diameters, and it is convenient to squeeze the diaphragm in the middle position of the upper end of the diffuser 40. The other structures of this embodiment are the same as those of embodiment 1, so they are not repeated.

[0035] Example 4

[0036] The difference between this embodiment and embodiment 1 is that in this embodiment, referring to Figure 1 , Figure 4, a lower pressing plate 25 is arranged on the piston rod of the lower pressing cylinder 8, the upper electrode 9 is placed below the lower pressing plate 25, a slider 26 is arranged on the lower pressing plate 25, a vertical guide plate 27 is arranged on the frame 1, guide grooves are provided on both sides of the guide plate 27 along the length direction of the guide plate 27, and two opposite guide blocks are arranged on the slider 26, the two guide blocks are respectively located in the corresponding guide grooves and slide in cooperation with the guide grooves, which is conducive to enabling the diaphragm to press the diffuser 40 in parallel with the extension of the lower pressing cylinder 8. Among them, the guide blocks and the guide grooves are not further enlarged in the accompanying drawings, and the two guide blocks are used to limit the slider 26 on the guide plate 27. The other structures of this embodiment are the same as those of embodiment 1, so they are not described in detail. It should be noted that two lower pressing cylinders 8 are shown in the accompanying drawings, and the lower pressing plate 25 below the lower pressing cylinder 8 on the right is omitted.

[0037] Example 5

[0038] The difference between this embodiment and embodiment 1 is that in this embodiment, referring to Figure 1 , Figure 4 The piston rod end of the downward pressure cylinder 8 is connected with a connecting rod 28, and a limiting groove is provided at the lower end of the connecting rod 28. A mounting shell 29 is provided above the downward pressure plate 25. The bottom of the connecting rod 28 passes through the top wall of the mounting shell 29 and extends to the inside of the mounting shell 29, and the top wall of the mounting shell 29 is limited in the limiting groove. A pressure sensor 30 is provided on the inner bottom wall of the mounting shell 29. When the downward pressure cylinder 8 drives the diaphragm to squeeze the diffuser 40 below, the connecting rod 28 squeezes the pressure sensor 30; the pressure sensor 30 is electrically connected to a controller, and the controller is electrically connected to an electrical proportional valve. The pressure sensor 30 can monitor the pressure of the downward pressure cylinder 8 squeezing the diaphragm. The downward pressure cylinder 8 can control the pressure of squeezing the diaphragm in real time through the electrical proportional valve and the pressure sensor 30, so that the diaphragm can more firmly press the diffuser 40 under the same pressure. The other structures of this embodiment are the same as those of embodiment 1, so they are not repeated here.

[0039] Example 6

[0040] The difference between this embodiment and embodiment 5 is that in this embodiment, reference Figure 1 , Figure 3 , combined with Figure 4A contact displacement sensor 31 is provided on the lower pressure plate 25. When the lower pressure cylinder 8 drives the diaphragm to squeeze the diffuser 40 below, the contact displacement sensor 31 is pressed against the upper surface of the rotating ring 16 below. When excessive welding occurs between the diffuser 40 and the diaphragm, it is easy to cause overheating and damage to the diaphragm or the diffuser 40. The contact displacement sensor 31 can monitor the welding height of the diffuser 40 and the diaphragm in real time. In the initial stage of excessive welding, the lower pressure plate 25 will move further downward while maintaining downward pressure. The contact displacement sensor 31 is electrically connected to the controller. At this time, it can be processed by triggering an alarm, disconnecting the welding power supply, or disconnecting the downward pressure of the lower pressure cylinder 8. The loss can be stopped in time, thereby preventing the occurrence of welding scrap to a certain extent. The other structures of this embodiment are the same as those of embodiment 5, so they are not repeated.

[0041] Example 7

[0042] The difference between this embodiment and embodiment 1 is that in this embodiment, referring to Figure 4 , Figure 6 , combined with Figure 7 A material receiving plate 32 is provided on the frame 1, and a material receiving trough 33 is provided on the material receiving plate 32. An opening is provided on one side wall of the material receiving trough 33. The jaw cylinder 2 is located on the material receiving plate 32, and a circular notch 12 formed when the two jaws of the jaw cylinder 2 are clamped is located directly above the material receiving trough 33. A through hole 34 with a diameter smaller than the circular notch 12 is provided on the bottom wall of the material receiving trough 33. A lifting cylinder 35 is provided below the material receiving plate 32, and a lifting rod 36 is provided at the lifting end of the lifting cylinder 35. When the lifting cylinder 35 is lifted upward, the lifting rod 36 passes through the through hole 34 and extends into the circular notch 12. The receiving slot 33 can be connected to an external film conveying mechanism, such as a feeding mechanism such as a vibration plate 37. The feeding mechanism conveys the film into the receiving slot 33 through the opening side wall of the receiving slot 33, so that the film is located directly above the passage hole 34. The lifting cylinder 35 extends to drive the push rod 36 to rise. After the push rod 36 passes through the passage hole 34, the film is lifted to between the two clamping jaws of the clamping jaw cylinder 2. Then, the two clamping jaws of the clamping jaw cylinder 2 are clamped, so that the film is positioned and clamped in the circular notch 12 of the clamping jaw cylinder 2, thereby facilitating the automatic feeding of the film, which is conducive to the automation of the resistance welding of the diffuser 40. The other structures of this embodiment are the same as those of the embodiment 1, so they are not repeated.

[0043] In other embodiments, a safety cylinder 38 is further provided on the frame 1, and the safety cylinder 38 is located above the lower pressure plate 25. The extension and retraction direction of the safety cylinder 38 is perpendicular to the extension and retraction direction of the lower pressure cylinder 8. The piston rod of the safety cylinder 38 is connected with a safety plate 39. One end of the safety plate 39 is connected to the safety cylinder 38, and the other end extends downward. A safety groove is provided on the plate surface of the lower end of the safety plate 39 close to the lower pressure plate 25, and when the safety cylinder 38 is shortened, the end of the lower pressure plate 25 close to the safety plate 39 extends into the safety groove. The safety cylinder 38 and the safety plate 39 are used to limit the lower pressure cylinder 8 to prevent the lower pressure cylinder 8 from malfunctioning; when the lower pressure cylinder 8 needs to be extended, the safety cylinder 38 is started first, so that the extension of the safety cylinder 38 drives the safety plate 39 to move in the direction away from the lower pressure plate 25, so that the lower pressure plate 25 is disengaged from the safety groove, and then the safety is released, which facilitates the lowering of the lower pressure plate 25.

[0044] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A diffuser resistance welding device, characterized in that: The invention comprises a frame (1), wherein a clamping cylinder (2) is arranged on the frame (1), wherein the clamping cylinder (2) is used for positioning and clamping a diaphragm, wherein a linear servo module (3) is arranged on one side of the frame (1), wherein a slide cylinder (4) is arranged on the slide of the linear servo module (3), wherein the slide of the slide cylinder (4) can move in a vertical direction, wherein a rotary cylinder (5) is arranged on the slide of the slide cylinder (4), wherein a suction cup (6) is arranged on the rotary structure of the rotary cylinder (5), and a lower electrode (7) is arranged on the frame (1) on one side of the clamping cylinder (2). ) and a centering mechanism, the centering mechanism is used to center and position the diffuser (40) in the placement hole of the lower electrode (7); a downward pressure cylinder (8) is arranged on the frame (1) above the lower electrode (7), the piston rod of the downward pressure cylinder (8) extends downward and is connected to the upper electrode (9), the lower end surface of the upper electrode (9) is provided with a suction nozzle (10), and the upper electrode (9) corresponds to the lower electrode (7) below; the suction cup (6) rotates downward to grab the diaphragm on the clamping cylinder (2), and rotates upward to transfer the diaphragm to the bottom of the suction nozzle (10).

2. The diffuser resistance welding device according to claim 1, characterized in that: When the two clamping jaws of the clamping jaw cylinder (2) are clamped together, a circular notch (12) capable of clamping a diaphragm is formed, and the central axis of the circular notch (12) is arranged vertically.

3. The diffuser resistance welding device according to claim 1, characterized in that: The centering mechanism comprises a mounting plate (13), a centering cylinder (14), a fixed ring (15) and a rotating ring (16); the mounting plate (13) is located on the frame (1); a through hole (17) is provided on the mounting plate (13); the lower electrode (7) extends to the top of the mounting plate (13) after passing through the through hole (17); the fixed ring (15) is located on the mounting plate (13); and the edge of the rotating ring (16) is provided with an outer edge (17) along the circumferential direction. 9), the rotating ring (16) is located in the inner ring of the fixed ring (15), the outer diameter of the rotating ring (16) is matched with the inner diameter of the inner ring of the fixed ring (15), and the outer edge (19) is overlapped on the fixed ring (15); a plurality of slide rails (20) are arranged at intervals along the circumference of the placement hole of the lower electrode (7) on the mounting plate (13), and the length direction of the plurality of slide rails (20) is consistent with the corresponding radial direction of the fixed ring (15), and each of the slide rails (20) ) are provided with abutment blocks (21) slidingly arranged along the length direction of the corresponding slide rail (20), one end of the abutment blocks (21) close to the lower electrode (7) is used to abut against the diffuser (40), and the other end is provided with a toggle portion (22), the bottom wall of the rotating ring (16) is provided with a plurality of toggle grooves (23), the distance from one end of the plurality of toggle grooves (23) to the lower electrode (7) is greater than the distance from the other end to the lower electrode (7), and the plurality of toggle portions (22) are provided with a plurality of toggle grooves (23) on the bottom wall of the rotating ring (16). 2) are both located in the corresponding toggle groove (23), when the rotating ring (16) rotates, the toggle portion (22) moves in the corresponding toggle groove (23), and the abutment block (21) slides on the slide rail (20); a connecting plate (24) is provided on the rotating ring (16), one end of the centering cylinder (14) is hingedly connected to the mounting plate (13), and the other end is hingedly connected to one end of the connecting plate (24) extending to the outside of the fixing ring (15).

4. The diffuser resistance welding device according to claim 1, characterized in that: A lower pressure plate (25) is arranged on the piston rod of the lower pressure cylinder (8), the upper electrode (9) is placed below the lower pressure plate (25), a slider (26) is arranged on the lower pressure plate (25), a vertical guide plate (27) is arranged on the frame (1), guide grooves are provided on both sides of the guide plate (27) along the length direction of the guide plate (27), and two opposite guide blocks are arranged on the slider (26), and the two guide blocks are respectively located in the corresponding guide grooves and slide in cooperation with the guide grooves.

5. The diffuser resistance welding device according to claim 4, characterized in that: The piston rod end of the downward pressure cylinder (8) is connected to a connecting rod (28), and a limiting groove is provided at the lower end of the connecting rod (28). A mounting shell (29) is provided above the downward pressure plate (25). The bottom of the connecting rod (28) passes through the top wall of the mounting shell (29) and extends to the inside of the mounting shell (29), and the top wall of the mounting shell (29) is limited in the limiting groove. A pressure sensor (30) is provided on the bottom wall of the mounting shell (29). When the downward pressure cylinder (8) drives the diaphragm to squeeze the diffuser (40) below, the connecting rod (28) squeezes the pressure sensor (30).

6. The diffuser resistance welding device according to claim 5, characterized in that: A contact displacement sensor (31) is provided on the lower pressure plate (25). When the lower pressure cylinder (8) drives the diaphragm to squeeze the diffuser (40) below, the contact displacement sensor (31) is pressed against the upper surface of the rotating ring (16) below.

7. The diffuser resistance welding device according to claim 1, characterized in that: The frame (1) is provided with a material receiving plate (32), the material receiving plate (32) is provided with a material receiving trough (33), one side wall of the material receiving trough (33) is provided with an opening, the clamping jaw cylinder (2) is located on the material receiving plate (32), and a circular notch (12) formed when the two clamping jaws of the clamping jaw cylinder (2) are clamped is located directly above the material receiving trough (33), a through hole (34) having a diameter smaller than the circular notch (12) is opened on the bottom wall of the material receiving trough (33), a lifting cylinder (35) is provided below the material receiving plate (32), a lifting end of the lifting cylinder (35) is provided with a push rod (36), when the lifting cylinder (35) is lifted upward, the push rod (36) passes through the through hole (34) and extends into the circular notch (12).

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