A galvanometer hairspring welding tool and method of use thereof

Abstract

The present application relates to the technical field of electric meter hairspring, specifically to an electric meter hairspring welding tool and its using method, which comprises a hairspring feeding seat, and the front side of the hairspring feeding seat is fixedly connected with a welding table, the present application realizes a series of operation processes such as automatic feeding, accurate positioning and clamping, and efficient wire feeding welding of the electric meter hairspring by setting the hairspring feeding seat and the welding table, and through one feeding operation, the welding processing task of multiple groups of electric meters can be continuously and stably completed, compared with the traditional way of relying on manual welding, the operation complexity and labor intensity are significantly reduced, and the processing precision and overall production efficiency of the hairspring welding are greatly improved, in addition, the system can continuously apply stable and uniform tension to the hairspring during feeding, effectively avoiding the loosening, bending and other adverse phenomena that may occur during the conveying process of the hairspring, thereby ensuring the accuracy and consistency of the welding position.

Description

Technical Field

[0001] This invention relates to the field of electric meter hairspring technology, and more specifically, to an electric meter hairspring welding fixture and its usage method. Background Technology

[0002] As a key elastic element in pointer-type meters used to generate reaction torque, the quality of the welding of the hairspring directly affects the meter's measurement accuracy and long-term operational stability. In the actual welding process, if uneven tension control or positioning deviation occurs, it can easily lead to a series of problems, such as the meter pointer shifting to zero, a significant increase in measurement error, or even serious malfunctions such as hairspring deformation or detachment. This can drastically shorten the meter's lifespan and affect its overall performance and reliability.

[0003] According to patent document CN102528282A, a laser hairspring welding device is disclosed. This device comprises a hairspring fixing assembly, a soldering assembly, a moving frame assembly, a shaping assembly, a guide rail assembly, and a laser welding assembly. The hairspring fixing assembly, soldering assembly, moving frame assembly, and shaping assembly are respectively located at the upper left, upper right, lower left, and lower right ends of a fixed base plate. The guide rail assembly is positioned between the moving frame assembly and the shaping assembly. The laser welding assembly is mounted on a frame above the hairspring fixing assembly. This invention uses laser-guided point positioning to weld hairsprings after soldering. It can weld various specifications or batches of instrument hairsprings. The image is transmitted to a display for observation via an image output device and modified by a controller, improving work efficiency and welding quality. Furthermore, it features a short processing cycle, low cost, and simple operation.

[0004] Currently, the welding of electric meter hairsprings mainly relies on manual positioning. This method not only places high demands on the experience level of the operators and may result in relatively low welding efficiency, but also makes it difficult to ensure the consistency of hairspring tension in each welding process, leading to poor welding quality stability and a low finished product qualification rate. In addition, when performing large-scale welding of electric meters and hairsprings, workers need to repeat positioning and welding operations for a long time, which consumes a lot of physical strength and is prone to further increasing the probability of welding errors due to operator fatigue, making it difficult to meet the actual needs of mass production. Summary of the Invention

[0005] To overcome the aforementioned deficiencies of the prior art, this invention provides a welding fixture for electric meter hairsprings and its method of use. The technical problem to be solved by this invention is that the welding efficiency may be relatively low. At the same time, manual operation makes it difficult to ensure the consistency of hairspring tension in each welding process, resulting in poor welding quality stability and low finished product qualification rate. In addition, when performing large-scale welding operations of electric meters and hairsprings, workers need to repeat positioning and welding operations for a long time, which consumes a lot of physical strength and is prone to further increasing the probability of welding errors due to operational fatigue, making it difficult to meet the actual needs of mass production.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A welding fixture for a meter hairspring includes a hairspring feeder, and a welding table is fixedly connected to the front side of the hairspring feeder. The hairspring feeder includes a feeder positioning seat, and a hairspring storage component is fixedly connected to the middle of the top of the feeder positioning seat; The feeding positioning seat includes two side L-shaped connecting plates. A cross base plate is fixedly connected to the front side of the bottom inner side of the two side L-shaped connecting plates. A rack cross bar is fixedly connected to the bottom front side of the two side L-shaped connecting plates. An electric push rod is fixedly connected to the rear side of the top center of the cross base plate. A positioning component is fixedly connected to the top front side of the two side L-shaped connecting plates. The welding table includes a front support plate, with L-shaped side support plates fixedly connected to the left and right sides of the bottom front side of the front support plate, a side guide plate fixedly connected to the right side of the top of the front support plate, a welding table plate fixedly connected to the rear side of the front support plate, and a welding table plate bottom support plate fixedly connected to the bottom of the welding table plate. The bottom of the welding table plate bottom support plate is fixedly connected to the front side of the top center of the cross base plate.

[0007] As a further embodiment of the present invention: the positioning component includes a sliding cross plate, the left and right sides of which are fixedly connected to the top of the front side of two L-shaped connecting plates. A hairspring guide plate is fixedly connected to the top center of the sliding cross plate. Expanding and contracting plates are slidably connected to the left and right sides of the front side of the sliding cross plate. L-shaped rear upright plates are fixedly connected to the top of the rear side of the two expanding and contracting plates. Rotating rods are rotatably connected to the front side of the two L-shaped rear upright plates. Push-pull blocks are rotatably connected to the front side of the two rotating rods. A hairspring fixing block is fixedly connected to the bottom of the push-pull block.

[0008] As a further embodiment of the present invention: a columnar rotating rod is rotatably connected to the front side of each of the two expansion plates, an inverted L-shaped rotating plate is fixedly connected to the top of each of the two columnar rotating rods, a positioning block is fixedly connected to the bottom of the front side of each of the two inverted L-shaped rotating plates, a gear is fixedly connected to the bottom end of each of the two columnar rotating rods, and the outer walls of the two gears mesh with the left and right sides of the front side of the rack crossbar.

[0009] As a further embodiment of the present invention: a T-shaped plate is fixedly connected to the middle of the rear side of the sliding plate, a T-shaped plate sliding groove is formed in the middle of the rear side of the T-shaped plate, guide rails are fixedly connected to the left and right sides of the front side of the bottom of the T-shaped plate, concave sliders are slidably connected to the outer walls of the two guide rails, a rotating long rod is rotatably connected to one side of the bottom of the T-shaped plate inside the two guide rails, a stop block is fixedly connected to the rear side of the inner side of the two rotating long rods, a stop block is fixedly connected to the bottom of the two stop blocks, an elliptical sliding groove block is fitted on the outer wall of the two stop blocks, and an inverted T-shaped push-pull block is fixedly connected to the front side of the elliptical sliding groove block.

[0010] As a further embodiment of the present invention: a columnar connecting rod is fixedly connected to the middle of the rear side of the inverted T-shaped push-pull block, the rear end of the columnar connecting rod is fixedly connected to the middle of the front side of the concave slider, and rotating short rods are rotatably connected to both sides of the middle of the front side of the T-shaped plate. The front sides of the two rotating long rods are rotatably connected to the outer side of the bottom of the rear side of the two expansion plates, and the front sides of the two rotating short rods are rotatably connected to the inner side of the bottom of the rear side of the two expansion plates.

[0011] As a further embodiment of the present invention: the hairspring storage component includes two side plates, the bottom of the two side plates are fixedly connected to both sides of the top center of the T-shaped plate, the top of the inner wall of the two side plates is rotatably connected to a columnar crossbar, the middle of the outer wall of the columnar crossbar is fixedly connected to a guide plate, the middle of the middle of the two side plates is provided with a plate groove, the inner wall of the plate groove of the two side plates is slidably connected to an L-shaped side slide plate, the inner wall of the two L-shaped side slide plates is rotatably connected to a second columnar crossbar, the middle of the outer wall of the second columnar crossbar is fixedly connected to a second guide plate, and the second guide plate is aligned with the guide plate.

[0012] As a further embodiment of the present invention: spring bottom connecting blocks are fixedly connected to the bottom of the outer sides of the two side uprights, springs are fixedly connected to both sides of the bottom of the two L-shaped side slides, the bottom ends of the left and right sets of springs are fixedly connected to the top sides of the two spring bottom connecting blocks, rear blocks are fixedly connected to the middle of the rear side of the two side uprights, a feeding roller connecting rod is fixedly connected to the middle of the inner side of the two rear blocks, and a feeding roller is rotatably connected to the middle of the outer wall of the feeding roller connecting rod.

[0013] As a further embodiment of the present invention: a storage platform is fixedly connected to the rear side of the left side of the front support plate, a pusher plate side plate is fixedly connected to the left side of the top of the storage platform, a second spring is fixedly connected to both sides of the right side of the pusher plate side plate, a pusher plate is fixedly connected to the right end of the two second springs, the outer wall of the pusher plate is slidably connected to the inner side of the top of the storage platform, a guide plate groove is provided in the middle of the side guide plate, a welding robot arm side connecting plate is fixedly connected to the middle of the top of the side guide plate, a welding robot arm support is fixedly connected to the left side of the welding robot arm side connecting plate, and a welding robot arm is fixedly connected to the left side of the top of the welding robot arm support.

[0014] As a further embodiment of the present invention: an L-shaped horizontal pusher plate is slidably connected to the front side of the inner wall of the guide plate groove opened in the side guide plate; a pusher block is fixedly connected to the bottom of the L-shaped horizontal pusher plate on the left side of the side guide plate; an L-shaped push-pull rod is fixedly connected to the bottom right side of the L-shaped horizontal pusher plate; a push-pull upright is fixedly connected to the left side of the rear side of the L-shaped push-pull rod; the bottom of the outer wall of the push-pull upright is slidably connected to the rear side of the inner wall of the T-shaped plate groove opened in the T-shaped plate; a columnar push-pull rod is fixedly connected to the bottom of the front side of the push-pull upright; the front end of the columnar push-pull rod is fixedly connected to the middle of the rear side of the concave slider; the middle of the front side of the push-pull upright is fixedly connected to the rear end of the electric push rod; and a left baffle is fixedly connected to the front side of the left side of the front support plate.

[0015] In addition, the present invention also relates to a method of using a welding fixture for a power meter hairspring, comprising the following steps: Step 1: Connect the equipment to the power supply, place multiple meters to be welded inside the storage platform, put the whole coil of hairspring on the outer wall of the feeding roller, pull the end of the hairspring through the two guide discs and the hairspring guide plate in sequence, and finally fix the end on the front side of the hairspring fixing block to complete the feeding preparation. Step 2: Check and confirm that the spring drives the L-shaped side slide plate to press the second guide plate against the hairspring, ensuring that the hairspring maintains the set tension, and start the welding program; Step 3: Start the electric push rod to extend. The electric push rod pushes the push-pull upright to move backward, which in turn drives the inverted T-shaped push-pull block and L-shaped push-pull rod to move backward. The inverted T-shaped push-pull block drives the concave slider to slide backward along the guide rail, which drives the elliptical slide block to move backward. The inner wall of the elliptical slide block abuts against the two abutment blocks and moves them closer to each other, which drives the two rotating rods to rotate, so that the two expansion plates move closer to each other along the slide plate. Step 4: When the L-shaped push rod moves backward, it drives the L-shaped horizontal push plate to move backward along the guide plate groove, pushing the meter to be processed on the top of the front support plate to the designated welding position on the welding table. Step 5: When the two expansion plates approach each other, the bottom gear moves along the meshing rack and pinion, and drives the two columnar vertical rotating rods to rotate synchronously through meshing transmission. Then, the inverted L-shaped rotating plate drives the two positioning blocks to approach each other, and completes the clamping and positioning of the meter side in place. Step Six: The two expansion plates move inward in sync with the two L-shaped rear upright plates. The L-shaped rear upright plates drive the rotating rod to rotate, pushing the push-pull block forward, which in turn drives the hairspring fixing block to move forward with the hairspring end, sending the hairspring to the designated welding point of the meter. Step 7: The welding robotic arm starts and completes the welding operation between the hairspring and the meter welding point according to the preset program. After welding, the excess hairspring is cut off. Step 8: Start the electric push rod to retract and reset, all components move synchronously in opposite directions, the expansion and contraction plates move away from each other, the positioning block is released from the welded meter, the hairspring fixing block is reset, and the L-shaped horizontal push plate moves forward and resets. Step 9: Under the elastic force of the second spring, the pusher plate in the storage platform pushes the next meter to be welded to the processing position on the top of the front support plate, waiting for the next welding cycle; Step 10: Repeat steps 3 to 9 to complete the automatic welding of the meter hairsprings in batches. After all welding is completed, disconnect the power supply, remove the finished meter, and clean up the welding slag and waste from the equipment to complete the operation.

[0016] The beneficial effects of this invention are as follows: This invention, by incorporating a hairspring feeding seat and a welding table, achieves a series of automated processes for feeding, precisely positioning and clamping, and efficiently feeding and welding the hairspring of an electric meter. With a single feeding operation, the welding of multiple sets of electric meters can be completed continuously and stably. Compared to the traditional method relying on manual welding, this significantly reduces operational complexity and labor intensity, while greatly improving the processing accuracy and overall production efficiency of hairspring welding. Furthermore, the system continuously applies a stable and uniform tension to the hairspring during the feeding process, effectively preventing loosening, bending, and other defects that may occur during the transport process, thus ensuring the accuracy and consistency of the welding position. This device fundamentally solves a series of problems existing in manual hairspring welding, such as insufficient positioning accuracy, low processing efficiency, and the tendency for the hairspring to bend, which affects the welding quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional separation structure of the main body of the present invention; Figure 3 This is a schematic diagram of the three-dimensional separation structure of the hairspring feeder of the present invention; Figure 4This is a schematic diagram of the three-dimensional separation structure of the feeding positioning seat of the present invention; Figure 5 This is a schematic diagram of the three-dimensional separation structure of the positioning component of the present invention; Figure 6 This is a three-dimensional bottom view of the positioning component of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a three-dimensional structural diagram of the hairspring storage component of the present invention; Figure 9 This is a three-dimensional structural diagram of the welding station of the present invention; Figure 10 This is a schematic diagram of the three-dimensional separation structure of the welding station of the present invention.

[0018] In the diagram: 1. Hairspring feeder; 11. Feeder positioning seat; 111. Side L-shaped connecting plate; 112. Cross base plate; 113. Rack crossbar; 114. Electric push rod; 115. Positioning assembly; 1151. Slide rail crossbar; 1152. Hairspring guide plate; 1153. Retractable and expandable plate; 1154. L-shaped rear upright plate; 1155. Rotating rod; 1156. Push-pull block; 1157. Hairspring fixing block; 1158. Columnar vertical rotating rod; 1159. 11510. Inverted L-shaped rotating plate; 11511. Positioning block; 11512. T-shaped plate; 11513. T-shaped plate groove; 11514. Guide rail; 11515. Concave slider; 11516. Rotating long rod; 11517. Abutment connecting block; 11518. Abutment block; 11519. Elliptical groove block; 11520. Inverted T-shaped push-pull block; 11521. Columnar connecting rod; 11522. Rotating short rod; 11523. Gear; 12. 1. Hairspring storage component; 121. Side upright plate; 122. Columnar crossbar; 123. Guide plate; 124. Upright plate slide groove; 125. L-shaped side slide plate; 126. Spring; 127. Spring bottom connecting block; 128. Second columnar crossbar; 129. Second guide plate; 1210. Rear block; 1211. Feed roller connecting rod; 1212. Feed roller; 2. Welding table; 21. Front support plate; 22. L-shaped side support upright plate; 23. Side guide plate; 24. 25. Guide plate groove; 26. Welding robot arm side connecting plate; 27. Welding robot arm support platform; 28. Welding robot arm; 29. ​​Welding table; 20. Welding table bottom support upright plate; 210. Storage platform; 211. Left baffle; 212. Pusher plate side plate; 213. Second spring; 214. Pusher plate; 215. L-shaped horizontal pusher plate; 216. Pusher bottom block; 217. L-shaped push-pull rod; 218. Push-pull upright rod; 219. Columnar push-pull rod. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1-2 As shown, the present invention provides a welding fixture for a meter hairspring, including a hairspring feeder 1, and a welding table 2 fixedly connected to the front side of the hairspring feeder 1.

[0021] like Figure 3-10As shown, the hairspring feeder 1 includes a feeder positioning seat 11. A hairspring storage component 12 is fixedly connected to the middle of the top of the feeder positioning seat 11. The feeder positioning seat 11 includes two side L-shaped connecting plates 111. A cross base plate 112 is fixedly connected to the front side of the bottom inner side of the two side L-shaped connecting plates 111. A rack crossbar 113 is fixedly connected to the bottom front side of the two side L-shaped connecting plates 111. An electric push rod 114 is fixedly connected to the rear side of the middle top of the cross base plate 112. A positioning component 115 is fixedly connected to the top front side of the two side L-shaped connecting plates 111. The welding table 2 includes a front support plate 21. L-shaped side support plates 22 are fixedly connected to the left and right sides of the bottom front side of the front support plate 21. A side guide plate 23 is fixedly connected to the right side of the top of the front support plate 21. A welding platform 28 is fixedly connected to the rear side of the 21. A welding platform bottom support plate 29 is fixedly connected to the bottom of the welding platform 28. The bottom of the welding platform bottom support plate 29 is fixedly connected to the front side of the top center of the cross base plate 112. The positioning assembly 115 includes a sliding groove horizontal plate 1151. The left and right sides of the sliding groove horizontal plate 1151 are fixedly connected to the top of the front side of two side L-shaped connecting plates 111. A hairspring guide plate 1152 is fixedly connected to the top center of the top of the sliding groove horizontal plate 1151. Expanding plates 1153 are slidably connected to the left and right sides of the front side of the sliding groove horizontal plate 1151. L-shaped rear upright plates 1154 are fixedly connected to the top of the rear side of the two expanding plates 1153. Rotating rods 1155 are rotatably connected to the front side of the two L-shaped rear upright plates 1154. A push-pull block 1156 is rotatably connected to the front side of the moving rod 1155. A hairspring fixing block 1157 is fixedly connected to the bottom of the push-pull block 1156. A columnar rotating rod 1158 is rotatably connected to the front side of each of the two expanding and contracting plates 1153. An inverted L-shaped rotating plate 1159 is fixedly connected to the top of each of the two columnar rotating rods 1158. A positioning block 11510 is fixedly connected to the bottom of the front side of each of the two inverted L-shaped rotating plates 1159. A gear 11522 is fixedly connected to the bottom of each of the two columnar rotating rods 1158. The outer walls of the two gears 11522 mesh with the left and right sides of the front side of the rack crossbar 113. A T-shaped plate 11511 is fixedly connected to the middle of the rear side of the sliding groove crossbar 1151. A T-shaped plate groove 11512 is opened in the middle of the rear side of the T-shaped plate 11511. Guide rails 11513 are fixedly connected to the left and right sides of the bottom front side of the T-shaped plate 11511. Concave sliders 11514 are slidably connected to the outer walls of the two guide rails 11513. Rotating rods 11515 are rotatably connected to one side of the bottom of the T-shaped plate 11511 inside the two guide rails 11513. Abutment connecting blocks 11516 are fixedly connected to the rear side of the inner side of the two rotating rods 11515. Abutment blocks 11517 are fixedly connected to the bottom of the two abutment connecting blocks 11516. Elliptical sliding groove blocks 11518 are fitted on the outer walls of the two abutment blocks 11517. An inverted T-shaped push-pull block 11519 is fixedly connected to the front side of the elliptical sliding groove block 11518. A columnar connecting rod 11520 is fixedly connected to the middle of the rear side of the inverted T-shaped push-pull block 11519.The rear end of the columnar connecting rod 11520 is fixedly connected to the middle of the front side of the concave slider 11514. Rotating short rods 11521 are rotatably connected to both sides of the middle of the front side of the T-shaped plate 11511. The front sides of the two rotating long rods 11515 are rotatably connected to the outer sides of the rear bottom of the two expanding plates 1153. The front sides of the two rotating short rods 11521 are rotatably connected to the inner sides of the rear bottom of the two expanding plates 1153. The hairspring storage component 12 includes two side plates 121. The bottom of the two side plates 121 is fixedly connected to both sides of the middle of the top of the T-shaped plate 11511. A columnar crossbar 122 is rotatably connected to the top of the inner wall of the two side plates 121. A guide plate 123 is fixedly connected to the middle of the outer wall of the columnar crossbar 122. The middle of the two side plates 121... Each of the two side uprights 121 is provided with a vertical plate groove 124. L-shaped side slide plates 125 are slidably connected to the inner walls of the vertical plate grooves 124 on both side uprights 121. A second columnar crossbar 128 is rotatably connected to the inner walls of the two L-shaped side slide plates 125. A second guide plate 129 is fixedly connected to the middle of the outer wall of the second columnar crossbar 128. The second guide plate 129 is aligned with the guide plate 123. Spring bottom connecting blocks 127 are fixedly connected to the bottom of the outer sides of both side uprights 121. Springs 126 are fixedly connected to both sides of the bottom of the two L-shaped side slide plates 125. The bottom ends of the left and right sets of springs 126 are fixedly connected to the top sides of the two spring bottom connecting blocks 127. Rear blocks 1210 are fixedly connected to the middle of the rear side of both side uprights 121. The inner sides of the two rear blocks 1210... A feeding roller connecting rod 1211 is fixedly connected to the front support plate 21. A feeding roller 1212 is rotatably connected to the middle of the outer wall of the feeding roller connecting rod 1211. A storage platform 210 is fixedly connected to the rear side of the left side of the front support plate 21. A pusher plate side plate 212 is fixedly connected to the left side of the top of the storage platform 210. Two second springs 213 are fixedly connected to both sides of the right side of the pusher plate side plate 212. A pusher plate 214 is fixedly connected to the right end of the two second springs 213. The outer wall of the pusher plate 214 is slidably connected to the inner side of the top of the storage platform 210. A guide plate groove 24 is opened in the middle of the side guide plate 23. A welding robot arm side connecting plate 25 is fixedly connected to the middle of the top of the side guide plate 23. A welding robot arm support 26 is fixedly connected to the left side of the welding robot arm side connecting plate 25. A welding robotic arm 27 is fixedly connected to the left side of the top of the arm support platform 26. An L-shaped horizontal pusher plate 215 is slidably connected to the front side of the inner wall of the guide plate groove 24 opened in the side guide plate 23. A pusher block 216 is fixedly connected to the bottom of the L-shaped horizontal pusher plate 215 on the left side of the side guide plate 23. An L-shaped push-pull rod 217 is fixedly connected to the right side of the bottom of the L-shaped horizontal pusher plate 215. A push-pull upright rod 218 is fixedly connected to the left side of the rear side of the L-shaped push-pull rod 217. The bottom of the outer wall of the push-pull upright rod 218 is slidably connected to the rear side of the inner wall of the T-shaped plate groove 11512 opened in the T-shaped plate 11511. A columnar push-pull rod 219 is fixedly connected to the bottom of the front side of the push-pull upright rod 218. The front end of the columnar push-pull rod 219 is fixedly connected to the middle of the rear side of the concave slider 11514.The middle of the front side of the push-pull upright 218 is fixedly connected to the rear end of the electric push rod 114, and a left baffle 211 is fixedly connected to the front side of the left side of the front support plate 21; When it is necessary to solder the hairspring of the meter, first place multiple meters to be soldered on the top of the storage platform 210. At this time, the rightmost meter is located on the left side of the side guide plate 23 on the front side of the top of the front support plate 21. The hairspring is sleeved on the outer wall of the feed roller 1212 and one end is pulled through the middle of the two guide plates 123 to the front side of the hairspring fixing block 1157. The hairspring fixing block 1157 fixes the end through which the hairspring passes. When welding is required, the electric push rod 114 is activated. The electric push rod 114 pushes the push-pull column 218 backward. This backward movement of the push-pull column 218 simultaneously moves the columnar push-pull rod 219 and the L-shaped push-pull rod 217 backward. The backward movement of the columnar push-pull rod 219 causes the concave slider 11514 to slide backward along the two guide rails 11513. The backward movement of the concave slider 11514, through the columnar connecting rod 11520, causes the elliptical slide block 11518 to move backward. The elliptical slide block 11518 then moves backward... The movement causes the two blocks 11517 to move closer together by abutting against the inner wall, which in turn drives the two rotating long rods 11515 to rotate around the connection point between the rotating short rod 11521 and the T-shaped plate 11511, so that the two expanding plates 1153 move closer together along the slide plate 1151. At the same time, the L-shaped push rod 217 moves backward, causing the L-shaped horizontal push plate 215 to move backward along the guide plate slide 24. When the L-shaped horizontal push plate 215 moves backward, it pushes the meter on the top of the front support plate 21 to the designated welding position on the welding table 28. As the two expansion plates 1153 approach each other, they drive the bottom gear 11522 to move along the meshing rack crossbar 113. Under the meshing transmission of the rack, the two columnar rotating rods 1158 rotate synchronously, which in turn drive the two positioning blocks 11510 to approach each other through the inverted L-shaped rotating plate 1159, thus completing the positioning of the meter side that has moved into place. At the same time as the two expansion plates 1153 move inward, they drive the two L-shaped rear upright plates 1154 to move inward. The movement of the two L-shaped rear upright plates 1154 drives the rotating rod 1155 to rotate, pushing the push-pull block 1156 to move forward, thereby driving the hairspring fixing block 1157 to move forward with the fixed lower end of the hairspring, accurately delivering the hairspring to the designated welding point of the meter. At this time, the welding robot arm 27 starts and completes the welding operation on the hairspring and the meter welding point. After welding is completed, the welded hairspring is cut off, the electric push rod 114 retracts and resets, all components move in opposite directions synchronously, the expansion and contraction plates 1153 move away from each other, the positioning block 11510 releases the machine body, the hairspring fixing block 1157 resets, the L-shaped horizontal push plate 215 moves forward and resets, and the push plate 214, under the elastic force of the second spring 213, pushes the next meter to be welded to the processing position on the top of the front support plate 21, waiting for the next welding operation; In addition, when the hairspring moves forward, the stability of the hairspring conveying process is ensured by the guidance of the two guide discs 123 and the hairspring guide plate 1152. The spring 126 pushes the L-shaped side slide plate 125 upward, so that the second guide disc 129 always presses against the hairspring. This can provide constant tension during the hairspring feeding process, avoid the hairspring from becoming loose and bent, ensure that the hairspring can be accurately fed into the welding position, and improve the welding positioning accuracy and welding quality.

[0022] In addition, the present invention also relates to a method of using a welding fixture for a power meter hairspring, comprising the following steps: Step 1: Connect the equipment to the power supply, place multiple meters to be welded inside the storage platform 210, put the whole coil of hairspring on the outer wall of the feeding roller 1212, pull the end of the hairspring through the two guide plates 123 and the hairspring guide plate 1152 in sequence, and finally fix the end to the front side of the hairspring fixing block 1157 to complete the feeding preparation. Step 2: Check and confirm that the spring 126 drives the L-shaped side slide plate 125, so that the second guide plate 129 presses against the hairspring, ensuring that the hairspring maintains the set tension, and start the welding program; Step 3: Start the electric push rod 114 to extend. The electric push rod 114 pushes the push-pull upright 218 to move backward, and simultaneously drives the inverted T-shaped push-pull block 11519 and L-shaped push-pull rod 217 to move backward. The inverted T-shaped push-pull block 11519 drives the concave slider 11514 to slide backward along the guide rail 11513, and drives the elliptical slide block 11518 to move backward. The inner wall of the elliptical slide block 11518 abuts against the two abutment blocks 11517 and brings them closer to each other, driving the two rotating long rods 11515 to rotate, so that the two expansion plates 1153 move closer to each other along the slide horizontal plate 1151. Step 4: When the L-shaped push-pull rod 217 moves backward, it drives the L-shaped horizontal push plate 215 to move backward along the guide plate groove 24, pushing the meter to be processed on the top of the front support plate 21 to the designated welding position on the welding table 28. Step 5: When the two expansion plates 1153 approach each other, the bottom gear 11522 moves along the meshing rack crossbar 113, and drives the two columnar vertical rotating rods 1158 to rotate synchronously through meshing transmission. Then, through the inverted L-shaped rotating plate 1159, it drives the two positioning blocks 11510 to approach each other, and completes the clamping and positioning of the meter side in place. Step 6: The two expansion plates 1153 move inward in sync with the two L-shaped rear upright plates 1154 moving inward. The L-shaped rear upright plates 1154 drive the rotating rod 1155 to rotate, push the push-pull block 1156 forward, and drive the hairspring fixing block 1157 to move forward with the hairspring end, sending the hairspring to the designated welding point of the meter. Step 7: The welding robotic arm 27 starts and completes the welding operation between the hairspring and the meter welding point according to the preset program. After welding, the excess hairspring is cut off. Step 8: Start the electric push rod 114 to retract and reset, all components move synchronously in opposite directions, the expansion and contraction plates 1153 move away from each other, the positioning block 11510 loosens the welded meter, the hairspring fixing block 1157 resets, and the L-shaped horizontal push plate 215 moves forward and resets. Step 9: Under the elastic force of the second spring 213, the pusher plate 214 in the storage platform 210 pushes the next meter to be welded to the processing position on the top of the front support plate 21, waiting for the next welding cycle. Step 10: Repeat steps 3 to 9 to complete the automatic welding of the meter hairsprings in batches. After all welding is completed, disconnect the power supply, remove the finished meter, and clean up the welding slag and waste from the equipment to complete the operation.

[0023] Working principle of the invention: When it is necessary to solder the hairspring of the electric meters, firstly, place multiple electric meters to be soldered on the top of the storage platform 210. At this time, the rightmost electric meter is on the left side of the side guide plate 23 on the front side of the top of the front support plate 21. The hairspring is sleeved on the outer wall of the feeding roller 1212, and one end is pulled through the middle of the two guide plates 123 to the front side of the hairspring fixing block 1157. The hairspring fixing block 1157 fixes the end through which the hairspring passes. When soldering is required, the electric push rod 114 is activated. The electric push rod 114 pushes the push-pull rod 218 to move backward. The backward movement of the push-pull rod 218 will simultaneously drive the columnar push-pull rod 219 and the L-shaped push-pull rod 217 to move backward. The backward movement of the columnar push-pull rod 219 will drive the concave slider 1... 1514 slides backward along the two guide rails 11513. The concave slider 11514 moves backward and drives the elliptical slide block 11518 to move backward through the columnar connecting rod 11520. The elliptical slide block 11518 moves backward and pushes the two abutments 11517 closer together through the inner wall. This causes the two rotating long rods 11515 to rotate around the connection point between the rotating short rod 11521 and the T-shaped plate 11511, so that the two expanding and contracting plates 1153 move closer together along the slide plate 1151. At the same time, the L-shaped push rod 217 moves backward and drives the L-shaped horizontal push plate 215 to move backward along the guide plate slide 24. When the L-shaped horizontal push plate 215 moves backward, it pushes the meter on the top of the front support plate 21 to the designated welding position on the welding table 28. As the two expanding plates 1153 approach each other, the bottom gear 11522 moves along the meshing rack crossbar 113. Under the meshing transmission of the rack, the two columnar rotating rods 1158 rotate synchronously, which in turn drives the two positioning blocks 11510 to approach each other through the inverted L-shaped rotating plate 1159, completing the positioning of the meter side that has moved into place. At the same time as the two expanding plates 1153 move inward, they also drive the two L-shaped rear upright plates 1154 to move inward. The movement of the two L-shaped rear upright plates 1154 drives the rotating rod 1155 to rotate, pushing the push-pull block 1156 to move forward, thereby driving the hairspring fixing block 1157 to move forward with the fixed lower end of the hairspring, accurately delivering the hairspring to the designated welding point of the meter. During operation, the stability of the hairspring conveying process is ensured by the guidance of the two guide discs 123 and the hairspring guide plate 1152. The spring 126 pushes the L-shaped side slide plate 125 upward, so that the second guide disc 129 always presses against the hairspring, which can provide constant tension during the hairspring feeding process and prevent the hairspring from becoming loose and bent. At this time, the welding robot arm 27 starts to complete the welding operation on the hairspring and the meter welding point. After the welding is completed, the welded hairspring is cut off, the electric push rod 114 retracts and resets, and all components move synchronously in opposite directions. The expansion and retraction plates 1153 move away from each other, the positioning block 11510 releases the machine body, the hairspring fixing block 1157 resets, and the L-shaped horizontal push plate 215 moves forward and resets. Under the elastic force of the second spring 213, the push plate 214...The next meter to be welded is pushed to the processing position on the top of the front support plate 21, awaiting the next welding operation.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for a meter hairspring, comprising a hairspring feeder (1), characterized in that: A welding station (2) is fixedly connected to the front side of the hairspring feeder (1); The hairspring feeder (1) includes a feeder positioning seat (11), and a hairspring storage component (12) is fixedly connected to the middle of the top of the feeder positioning seat (11). The loading positioning seat (11) includes two side L-shaped connecting plates (111). A cross base plate (112) is fixedly connected to the front side of the bottom inner side of the two side L-shaped connecting plates (111). A rack cross bar (113) is fixedly connected to the bottom front side of the two side L-shaped connecting plates (111). An electric push rod (114) is fixedly connected to the rear side of the top center of the cross base plate (112). A positioning component (115) is fixedly connected to the top front side of the two side L-shaped connecting plates (111). The welding table (2) includes a front support plate (21). L-shaped side support plates (22) are fixedly connected to the left and right sides of the bottom front side of the front support plate (21). A side guide plate (23) is fixedly connected to the right side of the top of the front support plate (21). A welding table plate (28) is fixedly connected to the rear side of the front support plate (21). A welding table bottom support plate (29) is fixedly connected to the bottom of the welding table plate (28). The bottom of the welding table bottom support plate (29) is fixedly connected to the front side of the top center of the cross base plate (112).

2. The welding fixture for a meter hairspring according to claim 1, characterized in that: The positioning component (115) includes a sliding plate (1151). The left and right sides of the sliding plate (1151) are fixedly connected to the top of the front side of two L-shaped connecting plates (111). A hairspring guide plate (1152) is fixedly connected to the top center of the sliding plate (1151). A retractable plate (1153) is slidably connected to the left and right sides of the front side of the sliding plate (1151). An L-shaped rear upright plate (1154) is fixedly connected to the top of the rear side of the two retractable plates (1153). A rotating rod (1155) is rotatably connected to the front side of the two L-shaped rear upright plates (1154). A push-pull block (1156) is rotatably connected to the front side of the two rotating rods (1155). A hairspring fixing block (1157) is fixedly connected to the bottom of the push-pull block (1156).

3. The welding fixture for a meter hairspring according to claim 2, characterized in that: The front sides of the two expansion plates (1153) are rotatably connected to columnar rotating rods (1158), the top ends of the two columnar rotating rods (1158) are fixedly connected to inverted L-shaped rotating plates (1159), the bottom of the front sides of the two inverted L-shaped rotating plates (1159) are fixedly connected to positioning blocks (11510), the bottom ends of the two columnar rotating rods (1158) are fixedly connected to gears (11522), and the outer walls of the two gears (11522) mesh with the left and right sides of the front side of the rack crossbar (113).

4. The welding fixture for a meter hairspring according to claim 2, characterized in that: A T-shaped plate (11511) is fixedly connected to the middle of the rear side of the sliding plate (1151). A T-shaped plate groove (11512) is opened in the middle of the rear side of the T-shaped plate (11511). Guide rails (11513) are fixedly connected to the left and right sides of the bottom front side of the T-shaped plate (11511). A concave slider (11514) is slidably connected to the outer wall of the two guide rails (11513). The bottom of the T-shaped plate (11511) is inside the two guide rails (11513). One side of each of the two rotating rods (11515) is rotatably connected to a rotating rod. The rear side of the inner side of each of the two rotating rods (11515) is fixedly connected to a stop block (11516). The bottom of each of the two stop blocks (11516) is fixedly connected to a stop block (11517). The outer wall of each of the two stop blocks (11517) is fitted with an elliptical sliding block (11518). The front side of the elliptical sliding block (11518) is fixedly connected to an inverted T-shaped push-pull block (11519).

5. The welding fixture for a meter hairspring according to claim 4, characterized in that: A columnar connecting rod (11520) is fixedly connected to the middle of the rear side of the inverted T-shaped push-pull block (11519). The rear end of the columnar connecting rod (11520) is fixedly connected to the middle of the front side of the concave slider (11514). Rotating short rods (11521) are rotatably connected to both sides of the middle of the front side of the T-shaped plate (11511). The front sides of the two rotating long rods (11515) are rotatably connected to the outer side of the bottom of the rear side of the two expansion plates (1153). The front sides of the two rotating short rods (11521) are rotatably connected to the inner side of the bottom of the rear side of the two expansion plates (1153).

6. The welding fixture for a meter hairspring according to claim 5, characterized in that: The hairspring storage component (12) includes two side plates (121). The bottom of each side plate (121) is fixedly connected to the two sides of the top center of the T-shaped plate (11511). The top of the inner wall of each side plate (121) is rotatably connected to a columnar crossbar (122). The middle of the outer wall of the columnar crossbar (122) is fixedly connected to a guide plate (123). The middle of the two side plates (121) is provided with a plate groove (124). The inner wall of the plate groove (124) provided by the two side plates (121) is slidably connected to an L-shaped side slide plate (125). The inner wall of the two L-shaped side slide plates (125) is rotatably connected to a second columnar crossbar (128). The middle of the outer wall of the second columnar crossbar (128) is fixedly connected to a second guide plate (129). The second guide plate (129) is aligned with the guide plate (123).

7. The welding fixture for a meter hairspring according to claim 6, characterized in that: Spring bottom connecting blocks (127) are fixedly connected to the bottom of the outer side of the two side plates (121). Springs (126) are fixedly connected to both sides of the bottom of the two L-shaped side plates (125). The bottom ends of the two sets of springs (126) are fixedly connected to the top sides of the two spring bottom connecting blocks (127). Rear blocks (1210) are fixedly connected to the middle of the rear side of the two side plates (121). Feeding roller connecting rods (1211) are fixedly connected to the middle of the inner side of the two rear blocks (1210). Feeding rollers (1212) are rotatably connected to the middle of the outer wall of the feeding roller connecting rods (1211).

8. The welding fixture for a meter hairspring according to claim 1, characterized in that: A storage platform (210) is fixedly connected to the rear side of the left side of the front support plate (21). A pusher plate side plate (212) is fixedly connected to the left side of the top of the storage platform (210). A second spring (213) is fixedly connected to both sides of the right side of the pusher plate side plate (212). A pusher plate (214) is fixedly connected to the right end of the two second springs (213). The outer wall of the pusher plate (214) is slidably connected to the inner side of the top of the storage platform (210). A guide plate groove (24) is opened in the middle of the side guide plate (23). A welding robot arm side connecting plate (25) is fixedly connected to the middle of the top of the side guide plate (23). A welding robot arm support (26) is fixedly connected to the left side of the welding robot arm side connecting plate (25). A welding robot arm (27) is fixedly connected to the left side of the top of the welding robot arm support (26).

9. The electrode spring welding fixture according to claim 8, characterized in that: An L-shaped horizontal push plate (215) is slidably connected to the front side of the inner wall of the guide plate groove (24) opened in the side guide plate (23). A push bottom block (216) is fixedly connected to the bottom of the L-shaped horizontal push plate (215) on the left side of the side guide plate (23). An L-shaped push rod (217) is fixedly connected to the bottom right side of the L-shaped horizontal push plate (215). A push rod (218) is fixedly connected to the left side of the rear side of the L-shaped push rod (217). The outer wall of the push rod (218) The bottom is slidably connected to the rear side of the inner wall of the T-shaped plate groove (11512) opened in the T-shaped plate (11511). The bottom of the front side of the push-pull rod (218) is fixedly connected to a columnar push-pull rod (219). The front end of the columnar push-pull rod (219) is fixedly connected to the middle of the rear side of the concave slider (11514). The middle of the front side of the push-pull rod (218) is fixedly connected to the rear end of the electric push rod (114). The front side of the left side of the front support plate (21) is fixedly connected to a left baffle (211).

10. A method of using a welding fixture for a power meter hairspring, as described in any one of claims 1-9, characterized in that: Includes the following steps: Step 1: Connect the equipment to the power supply, place multiple meters to be welded inside the storage platform (210), put the whole coil of hairspring on the outer wall of the feeding roller (1212), pull the end of the hairspring through the two guide plates (123) and the hairspring guide plate (1152) in sequence, and finally fix the end on the front side of the hairspring fixing block (1157) to complete the feeding preparation; Step 2: Check and confirm that the spring (126) drives the L-shaped side slide (125) to make the second guide plate (129) press against the hairspring, ensuring that the hairspring maintains the set tension, and start the welding program; Step 3: Start the electric push rod (114) to extend. The electric push rod (114) pushes the push-pull rod (218) to move backward, and simultaneously drives the inverted T-shaped push-pull block (11519) and L-shaped push-pull rod (217) to move backward. The inverted T-shaped push-pull block (11519) drives the concave slider (11514) to slide backward along the guide rail (11513), and drives the elliptical slide block (11518) to move backward. The inner wall of the elliptical slide block (11518) abuts against the two abutments (11517) and brings them closer to each other, driving the two rotating rods (11515) to rotate, so that the two expansion plates (1153) move closer to each other along the slide plate (1151). Step 4: When the L-shaped push-pull rod (217) moves backward, it drives the L-shaped horizontal push plate (215) to move backward along the guide plate groove (24), pushing the meter to be processed on the top of the front support plate (21) to the designated welding position on the welding table plate (28). Step 5: When the two expansion plates (1153) approach each other, the bottom gear (11522) moves along the meshing rack crossbar (113), and drives the two columnar rotating rods (1158) to rotate synchronously through meshing transmission. Then, through the inverted L-shaped rotating plate (1159), it drives the two positioning blocks (11510) to approach each other, and completes the clamping and positioning of the meter side in place. Step 6: The two expansion plates (1153) move inward in sync with the two L-shaped rear upright plates (1154) moving inward. The L-shaped rear upright plates (1154) drive the rotating rod (1155) to rotate, pushing the push-pull block (1156) forward, which in turn drives the hairspring fixing block (1157) to move forward with the hairspring end, sending the hairspring to the designated welding point of the meter. Step 7: The welding robot arm (27) is started and completes the welding operation between the hairspring and the meter welding point according to the preset program. After the welding is completed, the excess hairspring is cut off. Step 8: Start the electric push rod (114) to retract and reset, all components move synchronously in opposite directions, the expansion and retraction plates (1153) move away from each other, the positioning block (11510) releases the welded meter, the hairspring fixing block (1157) resets, and the L-shaped horizontal push plate (215) moves forward and resets. Step 9: Under the elastic force of the second spring (213), the pusher plate (214) in the storage platform (210) pushes the next meter to be welded to the processing position at the top of the front support plate (21) and waits for the next welding cycle. Step 10: Repeat steps 3 to 9 to complete the automatic welding of the meter hairsprings in batches. After all welding is completed, disconnect the power supply, remove the finished meter, and clean up the welding slag and waste from the equipment to complete the operation.

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