Micro spot welding mechanism
By using technical means such as elastic devices, limiting blocks and pressure sensors in microspot welding mechanisms, the problems of unstable movement of the welding head and excessive pressure are solved, and the accuracy and safety of welding are achieved.
Patent Information
- Application Number
- CN202323559877.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The welding heads in existing micro-spot welding machines cannot move smoothly, and they are prone to position deviations, and it is easy to cause hard contact and excessive pressure to the product during welding, resulting in damage.
A micro-spot welding mechanism is designed, including elastic device, main frame, bracket, welding head, clamp, slider, horizontal and vertical drive device, pressure sensor, etc., to eliminate welding head shaking through elastic device, limit blocks and slips The block combination maintains stability, the sensor detects downforce, and the shrapnel achieves flexible contact, avoiding position deviation and excessive pressure.
The welding head is achieved smooth movement and accurate contact, avoiding damage from position deviation and excessive pressure, and improving welding quality and product safety.
Smart Images
Figure CN222344446U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of welding equipment, in particular to a micro spot welding mechanism. Background Art
[0002] The micro spot welding machine uses electric current to pass through the welding head to the product, forming a high-temperature arc, melting the material, and solidifying after cooling to achieve welding. When processing the sensor, it is necessary to weld the chip on the sensor, which has high requirements for welding.
[0003] Mainly, due to the small size of the chip, the welding position accuracy is high. During the movement, it is necessary to ensure the smooth movement of the welding head to avoid position deviation of the welding head.
[0004] Secondly, during spot welding, the welding head and the product need to avoid hard contact, and excessive pressure under welding should be avoided to prevent the welding head from damaging the product.
[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention
[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a micro spot welding mechanism to solve the problem that the welding head cannot move smoothly and the welding head has position deviation in the prior art.
[0007] To achieve the above purpose, the technical solution of the utility model is as follows:
[0008] A micro spot welding mechanism;
[0009] It includes an elastic device, a main frame, a bracket, a welding head of a welding product, a clamping block for clamping the welding head, a slider arranged on the clamping block, a first driving device for driving the welding head to move horizontally, and a second driving device for driving the welding head to move vertically;
[0010] The main frame is arranged at the driving end of the second driving device; the first driving device is arranged on the main frame; the bracket is arranged at the driving end of the first driving device; the elastic device is arranged in the bracket and pulls the slider; the slider moves along the bracket.
[0011] A further technical solution is: a limiting cylinder is arranged on the bracket; a limiting block is slidably arranged in the limiting cylinder; a limiting rod is arranged on the sliding block; and the limiting rod is connected to the limiting block.
[0012] A further technical solution is: the micro-spot welding mechanism also includes a first sensor for detecting the welding head pressure; the first sensor is arranged in the limiting cylinder; and the first sensor is connected to the limiting rod.
[0013] A further technical solution is: an adjustment block is arranged in the bracket; one end of the elastic device is hooked on the adjustment block; and the other end of the elastic device is hooked on the sliding block.
[0014] A further technical solution is: a second sensor for detecting the slider is arranged in the bracket; and a detection end of the second sensor faces the slider.
[0015] A further technical solution is: the micro-spot welding mechanism also includes a sliding block supporting the main frame and a guide rail arranged along the moving direction of the welding head; the sliding block is slidably arranged on the guide rail; and the sliding block is connected to the main frame.
[0016] A further technical solution is: the clamping block includes a spring sheet, a first block for clamping the welding head, and a second block connected to the slider; the spring sheet connects the first block and the second block respectively.
[0017] A further technical solution is: a sleeve is inserted between adjacent second blocks; a ring sheet is arranged on the sleeve; a screw rod is inserted into the sleeve; a nut is threadedly connected to the screw rod; the ring sheet is attached to the side surface of the second block; and the nut presses the ring sheet.
[0018] A further technical solution is: a side block is sleeved on the screw rod; and the side block is located between the ring piece and the nut.
[0019] Compared with the prior art, the beneficial technical effects of the utility model are as follows: (1) The first driving device drives the welding head to move horizontally to adjust the position, and the second driving device drives the welding head to move downward so that the welding head contacts the product; the welding head will vibrate during the movement, and the elastic device pulls the slider to eliminate the vibration of the welding head, so that the welding head can accurately contact the welding position of the product; (2) In order to maintain the stability of the sliding process, the limiting block slides along the limiting cylinder, and the limiting block and the slider are connected by the limiting rod, so that when the slider slides along the bracket, the limiting block slides along the limiting cylinder, maintaining the stability of the slider sliding and avoiding position deviation of the welding head; (3) The downward pressure of the welding head is detected by the first sensor, which facilitates the adjustment of the driving force of the second driving device to avoid excessive downward pressure of the welding head and damage to the product. ; (4) When the welding head presses down on the product for welding, in order to avoid excessive pressure from the welding head and damage to the product, the spring sheet makes the first block and the second block elastically connected, and the welding head presses down on the product to avoid hard contact; when the welding head presses down on the product, the product and the welding head are in point contact, and the spring sheet deforms upward to change the angle of the first block, thereby adjusting the welding angle of the welding head. The product and the welding head are in surface contact, and the welding quality of the welding head is improved by increasing the contact area; (5) The adjacent second blocks are respectively connected to the power supply; the second blocks are pressed and fixed by nuts, and the adjacent second blocks are blocked by ring sheets to avoid short circuits in the clamping blocks; when the spring sheet deforms to change the angle of the first block, the first block moves upward, and the side block restricts the first block to avoid horizontal displacement of the first block, thereby avoiding position displacement of the welding head. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 The schematic diagram of the structure of the micro spot welding mechanism of the first embodiment of the utility model is shown.
[0021] Figure 2 Shows Figure 1 Enlarged structural diagram of point A in the middle.
[0022] Figure 3 A top view of the structure of a clamping block according to a second embodiment of the utility model is shown.
[0023] Markings in the accompanying drawings: 1. welding head; 2. clamping block; 21. first block; 22. second block; 23. spring piece; 24. sleeve; 25. ring piece; 26. screw; 27. nut; 28. side block; 3. slider; 4. bracket; 41. limiting cylinder; 42. limiting block; 43. limiting rod; 44. adjusting block; 45. second sensor; 5. first driving device; 6. second driving device; 61. sliding block; 62. guide rail; 7. elastic device; 8. first sensor; 9. main frame. DETAILED DESCRIPTION
[0024] In order to make the purpose, technical scheme and advantages of the utility model clearer, the device proposed in the utility model is further described in detail below in combination with the accompanying drawings and specific implementation methods. According to the following description, the advantages and features of the utility model will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the implementation method of the utility model. In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so it has no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the utility model can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the utility model.
[0025] First embodiment:
[0026] Figure 1 The schematic diagram of the structure of the micro spot welding mechanism of the first embodiment of the utility model is shown. Figure 2 Shows Figure 1 The enlarged structure diagram of A in the middle. Figure 1 and Figure 2 As shown, the utility model discloses a micro spot welding mechanism.
[0027] The micro spot welding mechanism includes an elastic device 7, a main frame 9, a bracket 4, a welding head 1 for welding a product, a clamping block 2 for clamping the welding head 1, a slider 3 arranged on the clamping block 2, a first driving device 5 for driving the welding head 1 to move horizontally, and a second driving device 6 for driving the welding head 1 to move vertically.
[0028] The main frame 9 is arranged at the driving end of the second driving device 6. The first driving device 5 is arranged on the main frame 9. The bracket 4 is arranged at the driving end of the first driving device 5. The elastic device 7 is arranged in the bracket 4 and pulls the slider 3. The slider 3 moves along the bracket 4.
[0029] The main frame 9 is composed of two sets of plates arranged perpendicularly to each other. The two sets of first driving devices 5 are installed at different positions of the main frame 9, so that the welding heads 1 can weld products from different directions, avoiding interference between the welding heads 1.
[0030] The bracket 4 is arranged at the driving end of the first driving device 5 in the vertical direction. The upper end of the slider 3 slides along the bracket 4. The lower end of the slider 3 is connected to the clamping block 2. A notch is formed on the clamping block 2. The welding head 1 is placed in the notch. The clamping block 2 is threaded with bolts. The bolts are tightened to narrow the notch and clamp the welding head 1.
[0031] Exemplarily, the elastic device 7 is a spring. The elastic device 7 elastically pulls the slider 3. Exemplarily, the product is a field effect hydrogen sensor, a catalytic combustion hydrogen sensor, a thin film resistor hydrogen sensor, a carbon-based field effect hydrogen sensor or a semiconductor methane sensor.
[0032] The first driving device 5 drives the welding head 1 to move horizontally to adjust the position, and the second driving device 6 drives the welding head 1 to move downward, so that the welding head 1 contacts the product. The welding head 1 will vibrate during the movement, and the elastic device 7 pulls the slider 3 to eliminate the vibration of the welding head 1, so that the welding head 1 accurately contacts the welding position of the product.
[0033] A limiting cylinder 41 is provided on the bracket 4. A limiting block 42 is slidably provided in the limiting cylinder 41. A limiting rod 43 is provided on the slider 3. The limiting rod 43 is connected to the limiting block 42.
[0034] The limiting cylinder 41 is disposed at the upper end of the bracket 4 in the vertical direction. The limiting block 42 slides up and down inside the limiting cylinder 41. The inner surface of the limiting cylinder 41 fits the outer surface of the limiting block 42. The lower end of the limiting rod 43 is connected to the slider 3. The upper end of the limiting rod 43 is connected to the limiting block 42.
[0035] After the welding head 1 contacts the product, the product will form an upward reaction force on the welding head 1. In order to avoid hard contact between the welding head 1 and the product, the slider 3 can slide along the bracket 4. In order to maintain the stability of the sliding process, the limiting block 42 slides along the limiting cylinder 41, and the limiting block 42 and the slider 3 are connected by the limiting rod 43, so that when the slider 3 slides along the bracket 4, the limiting block 42 slides along the limiting cylinder 41, maintaining the stability of the sliding of the slider 3 and avoiding position deviation of the welding head 1.
[0036] The micro spot welding mechanism further includes a first sensor 8 for detecting the pressure of the welding head 1. The first sensor 8 is disposed in the limiting cylinder 41. The first sensor 8 is connected to the limiting rod 43.
[0037] Exemplarily, the first sensor 8 is a pressure sensor. Exemplarily, there are two groups of limiting rods 43. The limiting rods 43 are respectively connected to both ends of the first sensor 8. The two groups of limiting rods 43 are respectively connected to the slider 3 and the limiting block 42.
[0038] After the welding head 1 contacts the product, the product will form an upward reaction force on the welding head 1. The limiting block 42 stops moving when it slides upward along the limiting cylinder 41 to the limit position. The first sensor 8 detects the downward pressure of the welding head 1 at this time, and the welding head 1 completes welding.
[0039] The downward pressure of the welding head 1 is detected by the first sensor 8, so as to facilitate the adjustment of the driving force of the second driving device 6, so as to avoid excessive downward pressure of the welding head 1 and damage to the product.
[0040] An adjusting block 44 is arranged in the bracket 4. One end of the elastic device 7 is hooked on the adjusting block 44. The other end of the elastic device 7 is hooked on the slide block 3.
[0041] The mounting holes are arranged in parallel in the vertical direction in the bracket 4. Bolts are passed through the adjustment block 44 and screwed into the mounting holes to install the adjustment block 44 in the bracket 4. Pins are installed on the adjustment block 44 and the slider 3.
[0042] The upper end of the elastic device 7 hooks the pin of the adjustment block 44. The lower end of the elastic device 7 hooks the pin of the slider 3, and the elastic device 7 is in a tensioned state. By screwing the bolts on the adjustment block 44 into different mounting holes, the upper and lower positions of the adjustment block 44 are adjusted, thereby adjusting the tension of the elastic device 7.
[0043] A second sensor 45 for detecting the slider 3 is disposed in the bracket 4 . The detection end of the second sensor 45 faces the slider 3 .
[0044] Exemplarily, the second sensor 45 is a photoelectric sensor. When the slider 3 moves to the limit position, the second sensor 45 detects the slider 3. This prevents the driving force of the second driving device 6 from being too large, and prevents the welding head 1 from crushing the product.
[0045] The micro spot welding mechanism further comprises a sliding block 61 supporting the main frame 9 and a guide rail 62 arranged along the moving direction of the welding head 1. The sliding block 61 is slidably arranged on the guide rail 62. The sliding block 61 is connected to the main frame 9.
[0046] The guide rail 62 is arranged in the up-down direction. The sliding block 61 slides up and down along the guide rail 62. During the movement of the main frame 9, the sliding block 61 slides along the guide rail 62, and the sliding block 61 supports the main frame 9, thereby ensuring the stability of the main frame 9 during the movement process.
[0047] The clamp block 2 includes a spring piece 23, a first block 21 for clamping the welding head 1, and a second block 22 connected to the slider 3. The spring piece 23 connects the first block 21 and the second block 22 respectively.
[0048] The two ends of the spring piece 23 are respectively connected to the first block 21 and the second block 22. The spring piece 23 is horizontally arranged. The spring piece 23 is distributed up and down.
[0049] When the welding head 1 presses down the product for welding, in order to prevent the product from being crushed by excessive pressure of the welding head 1, the first block 21 and the second block 22 are elastically connected through the spring sheet 23, and the welding head 1 presses down the product to avoid hard contact. When the welding head 1 presses down the product, the product and the welding head 1 are in point contact, and the spring sheet 23 deforms upward to change the angle of the first block 21, thereby adjusting the welding angle of the welding head 1, and the product and the welding head 1 are in surface contact, and the welding quality of the welding head 1 is improved by increasing the contact area.
[0050] Second embodiment:
[0051] Figure 3 The top view of the clamp block of the second embodiment of the utility model is shown. Figure 1-Figure 3 As shown:
[0052] A sleeve 24 is provided between adjacent second blocks 22. A ring piece 25 is provided on the sleeve 24. A screw rod 26 is provided inside the sleeve 24. A nut 27 is threadedly connected to the screw rod 26. The ring piece 25 is attached to the side surface of the second block 22. The nut 27 presses the ring piece 25 tightly.
[0053] The adjacent second blocks 22 are arranged in parallel. The ring piece 25 is arranged on the outer surface of the sleeve 24. The ring piece 25 and the sleeve 24 are made of insulating materials. The nut 27 is threadedly connected to both ends of the screw rod 26. After tightening the nut 27, the nut 27 presses the ring piece 25, and the ring piece 25 presses the second block 22.
[0054] The adjacent second blocks 22 are connected to power supplies respectively. The second blocks 22 are pressed and fixed by nuts 27, and the adjacent second blocks 22 are blocked by ring sheets 25 to prevent the clamping block 2 from short-circuiting.
[0055] The screw rod 26 is sleeved with a side block 28. The side block 28 is located between the ring piece 25 and the nut 27.
[0056] The side blocks 28 are sleeved on both ends of the screw rod 26. The side blocks 28 extend toward the first block 21. The first block 21 contacts the side blocks 28. When the spring sheet 23 deforms to change the angle of the first block 21, the first block 21 moves upward, and the side blocks 28 restrict the first block 21 to prevent the first block 21 from being horizontally offset, thereby preventing the welding head 1 from being offset.
[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0058] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A micro spot welding mechanism, characterized in that: It comprises an elastic device (7), a main frame (9), a bracket (4), a welding head (1) of a welding product, a clamping block (2) for clamping the welding head (1), a slider (3) arranged on the clamping block (2), a first driving device (5) for driving the welding head (1) to move horizontally, and a second driving device (6) for driving the welding head (1) to move vertically; The main frame (9) is arranged at the driving end of the second driving device (6); the first driving device (5) is arranged on the main frame (9); the bracket (4) is arranged at the driving end of the first driving device (5); the elastic device (7) is arranged in the bracket (4) and pulls the slider (3); the slider (3) moves along the bracket (4).
2. The micro spot welding mechanism according to claim 1, characterized in that: A limiting cylinder (41) is arranged on the bracket (4); a limiting block (42) is slidably arranged inside the limiting cylinder (41); a limiting rod (43) is arranged on the sliding block (3); and the limiting rod (43) is connected to the limiting block (42).
3. The micro spot welding mechanism according to claim 2, characterized in that: The micro-spot welding mechanism also includes a first sensor (8) for detecting the pressure of the welding head (1); the first sensor (8) is arranged in the limiting cylinder (41); and the first sensor (8) is connected to the limiting rod (43).
4. The micro spot welding mechanism according to claim 1, characterized in that: An adjustment block (44) is arranged in the bracket (4); one end of the elastic device (7) is hooked on the adjustment block (44); and the other end of the elastic device (7) is hooked on the sliding block (3).
5. The micro spot welding mechanism according to claim 4, characterized in that: A second sensor (45) for detecting the slider (3) is arranged in the bracket (4); the detection end of the second sensor (45) faces the slider (3).
6. The micro spot welding mechanism according to claim 1, characterized in that: The micro-spot welding mechanism also includes a sliding block (61) supporting the main frame (9) and a guide rail (62) arranged along the moving direction of the welding head (1); the sliding block (61) is slidably arranged on the guide rail (62); and the sliding block (61) is connected to the main frame (9).
7. The micro spot welding mechanism according to claim 1, characterized in that: The clamping block (2) comprises a spring sheet (23), a first block (21) for clamping the welding head (1), and a second block (22) connected to a sliding block (3); the spring sheet (23) respectively connects the first block (21) and the second block (22).
8. The micro spot welding mechanism according to claim 7, characterized in that: A sleeve (24) is inserted between adjacent second blocks (22); a ring sheet (25) is arranged on the sleeve (24); a screw rod (26) is inserted into the sleeve (24); a nut (27) is threadedly connected to the screw rod (26); the ring sheet (25) is attached to the side surface of the second block (22); and the nut (27) presses the ring sheet (25).
9. The micro spot welding mechanism according to claim 8, characterized in that: A side block (28) is sleeved on the screw rod (26); the side block (28) is located between the ring piece (25) and the nut (27).