Magnetic assembly welding all-in-one machine clamp capable of flexibly fixing wiring board
By designing a flexible clamping seat and positioning pin structure in the magnetic component welding equipment, the problem of time-consuming replacement of different terminal block structures was solved, production efficiency was improved and welding quality was enhanced, and stable positioning of the terminal block and unobstructed movement of the moving iron core were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SHENKE WELDING EQUIP CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-01
AI Technical Summary
Existing magnetic component welding equipment requires frequent changes of positioning fixtures when dealing with terminal boards of different structures, resulting in low production efficiency. Furthermore, the moving iron core obstructs the coil during the welding process, affecting the welding quality.
A magnetic component welding fixture that can flexibly fix terminal blocks is designed. By setting positioning pins and limit blocks on the fixture seat, different pins are inserted to fix the terminal blocks according to their different structures. Combined with the fine adjustment function of the slider and support spring, the terminal blocks are stably positioned. The movement of the moving iron core is controlled by the drive cylinder to avoid obstruction.
This technology allows for the adaptation of terminal blocks with different structures without requiring the entire fixture to be disassembled and reassembled, improving production efficiency and eliminating the obstruction of the coil by the moving iron core, thus enhancing welding quality and stability.
Smart Images
Figure CN224182441U_ABST
Abstract
Description
A magnetic component welding fixture that can flexibly fix terminal blocks Technical Field
[0001] This invention relates to the field of circuit breaker magnetic component welding equipment technology, and in particular to a magnetic component welding integrated machine fixture that can flexibly fix the terminal block. Background Technology
[0002] A magnetic assembly is an accessory installed inside a miniature circuit breaker, as shown in Figure 1-2. It typically includes a stationary contact b mounted on a magnetic yoke a, a terminal block c, a coil d, and an iron core e. The iron core e consists of a frame e1, a stationary iron core e2, and a moving iron core e3, all housed within the coil d. The frame e1 is connected to the magnetic yoke a and positioned between the coil d and the stationary and moving iron cores e2 and e3. The stationary iron core e2 is fixed to one end of the frame e1, and a spring connects the stationary iron core e2 to the moving iron core e3. The spring pushes the moving iron core e3 from... The other end of the frame e1 extends out, allowing the moving iron core e3 to move along the axis of the coil d. The moving iron core e3 is connected to a pull rod e4. The pull rod e4 extends out of the frame e1 from the end where the stationary iron core e2 is located and is provided with a pull plate that fits against the stationary iron core e2 from the outside. The terminal block c is an S-shaped component connected to one side of the coil d. Depending on the model, the structure of the terminal block c is divided into two types: Terminal block structure one, which bends upward first and then bends horizontally, and Terminal block structure two, which extends horizontally first, then bends upward, and finally bends horizontally in the opposite direction.
[0003] Existing magnetic component welding equipment uses positioning fixtures on the edge of a turntable to place magnetic component parts. As the turntable rotates to different stations, new parts are picked up and placed onto the positioning fixtures for welding. Since the terminal block structures to be welded in each round of processing are different, as preparation work, the original positioning fixtures need to be removed and replaced with another positioning fixture that matches the terminal block structure. This operation is time-consuming and not conducive to quickly starting a new round of magnetic component welding, thus affecting production efficiency. When welding the terminal block, the protruding moving iron core can obstruct the coil. Usually, a cylinder is set outside the turntable. During the welding process, the cylinder extends a push rod to push the iron core to move and retract into the frame, while keeping the pull rod protruding at the other end of the frame to reduce obstruction to the coil end. When the cylinder is released and the moving iron core is pushed back by the spring, the pull plate can hold the stationary iron core to prevent the moving iron core from being completely pushed out of the frame. However, the push rod itself will also generate some obstruction from the coil, which will still affect the welding.
[0004] Therefore, designing a flexible magnetic component welding fixture that can save preparation time and allows for the fixed installation of junction boxes with different structures without requiring overall replacement has become an urgent technical problem to be solved. Summary of the Invention
[0005] To solve the above problems, the present invention provides a magnetic component welding fixture that can flexibly fix the terminal block.
[0006] The present invention provides a magnetic component welding fixture that can flexibly fix a terminal block, comprising a fixture base, a placement groove matching the magnetic yoke, and a fixing seat located on one side of the placement groove. The top surface of the fixing seat is provided with positioning pins and pin holes for inserting the positioning pins. The positioning pins are arranged to form outer pins and inner pins. The outer pins include a left outer pin, a left upper outer pin, a right upper outer pin, and a right outer pin, corresponding to the outer side of the magnetic component terminal block. The inner pins include a left inner pin, a left upper inner pin, and a right inner pin, corresponding to the inner side of the magnetic component terminal block. The left inner pin, the left upper inner pin, and the left upper outer pin are arranged longitudinally, and the left upper inner pin, the right inner pin, and the right outer pin are arranged transversely.
[0007] With the above structure, by installing the fixture base on the turntable of the magnetic component welding machine, during the processing, the magnetic yoke, stationary contact, terminal block, coil, and iron core of the magnetic component are clamped onto the fixture base for welding. The magnetic yoke is placed in the placement slot to prevent the magnetic component from shifting to the side during welding. Positioning pins are inserted into the pin holes of the fixed base, forming outer and inner pins, which clamp the terminal block from both the inside and outside for fixation. When it is necessary to fix the terminal block structure, the left outer pin, left inner pin, and upper left outer pin are inserted. The upper left inner pin, upper right outer pin, and right inner pin are designed so that the terminal block structure first bends upward to form a left vertical section, and then bends horizontally to form an upper horizontal section. When the terminal block is clamped onto the mounting base, the left inner pin rests against the inside of the left vertical section to prevent the terminal block from sliding sideways and separating from the coil. The left outer pin rests against the outside of the upward bend in the terminal block. Combined with the upper left and upper right outer pins, which rest against the outside of the upper horizontal section, this prevents the terminal block from sliding upward and separating from the coil. The upper left and right inner pins rest against the inside of the upper horizontal section, along with the upper left outer pin and the upper right inner pin. The outer pins clamp both ends of the upper horizontal section to prevent the terminal block from deflecting and separating from the coil during welding. When it is necessary to fix the second terminal block structure, pull out the left outer pin and insert the right outer pin. As a point of differentiation from the first structure, the second terminal block structure first extends horizontally to form the lower horizontal section, then bends upward to form the right vertical section, and finally bends horizontally in the opposite direction to form the upper horizontal section, which is similar in shape to the first structure. The left inner pin rests against the inside of the lower horizontal section, and the upper left and upper right outer pins rest against the outside of the upper horizontal section to prevent the terminal block from sliding upward and separating from the coil. The right outer pin rests against the right vertical section. On the outside of the straight section, to prevent the terminal block from sliding to the side and separating from the coil, the upper left inner pin and the right inner pin abut against the inside of the upper horizontal section, and together with the upper left outer pin and the upper right outer pin, clamp the two ends of the upper horizontal section to prevent the terminal block from deflecting and separating from the coil during the welding process; there is no need to disassemble the entire fixture seat, making the operation time-saving and convenient; by arranging the left inner pin, the upper left inner pin and the upper left outer pin along the longitudinal direction, and the upper left inner pin, the right inner pin and the right outer pin along the transverse direction, the force is more evenly distributed when the terminal block is abutted by the positioning pins, improving the stability of the terminal block fixed by the positioning pins.
[0008] As a further improvement of this utility model, the clamp seat is provided with a first limiting block, a second limiting block and a guide rail. The guide rail is horizontally arranged below the fixed seat. The fixed seat is provided with a slider slidably connected to the guide rail. The first limiting block and the second limiting block are respectively arranged at both ends of the guide rail. The first limiting block is threadedly connected with a limiting bolt. The second limiting block is connected to a support spring on the side facing the fixed seat. The axis of the limiting bolt and the support spring matches the length direction of the guide rail. The limiting bolt and the support spring respectively abut against both sides of the fixed seat.
[0009] With the above structure, the fixed seat slides along the guide rail via a slider connected to it. The first limiting block is threaded with a limiting bolt, and the second limiting block is equipped with a support spring. The axes of the limiting bolt and the support spring are matched with the length direction of the guide rail, and they abut against both sides of the fixed seat. Rotating the limiting bolt causes it to move in threaded engagement with the first limiting block, pushing the fixed seat closer to the second limiting block along the guide rail. The position of the positioning pin on the fixed seat is finely adjusted to ensure that the positioning plate matches the position of the coil. During the process, the fixed seat compresses the support spring, increasing the elastic force generated by the support spring. When the limiting bolt is rotated in the opposite direction, the elastic force of the support spring pushes the fixed seat closer to the first limiting block and keeps it in contact with the limiting bolt, allowing the fixed seat to move smoothly on the guide rail.
[0010] As a further improvement of this utility model, the side of the fixing base is provided with a spring hole that matches the support spring, and the end of the support spring is inserted into the spring hole and abuts against the bottom of the spring hole.
[0011] With the above structure, the side of the fixed base is provided with a spring hole that matches the support spring. The end of the support spring is inserted into the spring hole and abuts against the bottom of the spring hole, thereby achieving the contact between the support spring and the fixed base. When the support spring retracts, the wall of the spring hole blocks the end of the support spring, preventing it from bending or moving to the side, thus assisting the support spring to retract along the axis.
[0012] As a further improvement of this utility model, the clamp seat is provided with a third limiting block and a driving cylinder for driving the third limiting block to move vertically up and down. The top of the third limiting block is provided with a slot and a card plate located on both sides of the slot. The position of the slot corresponds to the pull rod of the magnetic component, and the position of the card plate corresponds to the pull plate of the magnetic component.
[0013] With the above structure, by extending the push rod through the start cylinder of the magnetic component welding machine, the moving iron core is pushed into the frame. The pull rod extends from the other end, and the drive cylinder controlled by the magnetic component welding machine is started. The drive cylinder drives the third limit block to move upward, the slot moves upward to allow the pull rod to enter, and the clamping plates on both sides of the slot abut against the pull plate. At this time, the control cylinder of the magnetic component welding machine resets the push rod, and the clamping plates prevent the pull plate from moving towards the frame, thus preventing the spring from pushing the moving iron core to reset, eliminating the obstruction of the moving iron core or push rod at the welding point of the terminal board. After welding is completed, the drive cylinder drives the third limit block to move downward, the clamping plates and pull plates are misaligned and separated, and the spring pushes the moving iron core to automatically reset.
[0014] As a further improvement of this utility model, the top edge of the card plate is provided with a chamfered guide slope.
[0015] With the above structure, the top edge of the card plate is provided with a chamfered guide slope. During the upward movement of the card plate, the guide slope contacts the edge of the pull plate, squeezing the pull plate to move further away from the skeleton, creating enough space for the card plate to move upward. Attached Figure Description
[0016] Figure 1 shows a schematic diagram of the magnetic assembly wiring board structure.
[0017] Figure 2 shows a schematic diagram of the magnetic component wiring board structure 2.
[0018] Figure 3 shows a schematic diagram of the welding terminal block structure of this utility model in one state.
[0019] Figure 4 shows a schematic diagram of the welding terminal block structure of this utility model in two states.
[0020] Figure 5 shows a schematic diagram of the third limiting block structure in part A.
[0021] 1-Clamping seat, 2-Fixing seat, 3-Pin hole, 4-Left outer pin, 5-Left upper outer pin, 6-Right upper outer pin, 7-Right outer pin, 8-Left inner pin, 9-Left upper inner pin, 10-Right inner pin, 11-First limiting block, 12-Second limiting block, 13-Guide rail, 14-Slider, 15-Limiting bolt, 16-Support spring, 17-Spring hole, 18-Third limiting block, 19-Slot, 20-Clamping plate. Detailed Implementation
[0022] As shown in Figures 3-5, a magnetic component welding machine fixture that can flexibly fix a terminal block includes a fixture base 1. The fixture base 1 is provided with a placement groove that matches the magnetic yoke. The fixture base 1 is also provided with a fixing seat 2 located on one side of the placement groove. The top surface of the fixing seat 2 is provided with positioning pins and pin holes 3 for the positioning pins to be inserted. The positioning pins are arranged to form outer pins and inner pins. The outer pins include a left outer pin 4, a left upper outer pin 5, a right upper outer pin 6, and a right outer pin 7, which correspond to the outer side of the magnetic component terminal block. The inner pins include a left inner pin 8, a left upper inner pin 9, and a right inner pin 10, which correspond to the inner side of the magnetic component terminal block. The left inner pin 8, the left upper inner pin 9, and the left upper outer pin 5 are arranged longitudinally, and the left upper inner pin 9, the right inner pin 10, and the right outer pin 7 are arranged transversely.
[0023] By mounting the clamping base 1 on the turntable of the magnetic component welding machine, during the processing, the magnetic yoke, stationary contact, terminal block, coil, and iron core of the magnetic component are clamped onto the clamping base 1 for welding. The magnetic yoke is placed in a placement slot to prevent the magnetic component from shifting to the side during welding. Positioning pins are inserted into the pin holes 3 of the fixing base 2, forming outer and inner pins, which clamp the terminal block from both sides for fixation. When it is necessary to fix the terminal block structure, the left outer pin 4, left inner pin 8, upper left outer pin 5, upper left inner pin 9, and upper right inner pin 1 are inserted. Outer pin 6 and right inner pin 10 are formed by the terminal block structure first bending upwards to form a left vertical section, and then bending horizontally to form an upper horizontal section. After the terminal block is clamped onto the fixing seat 2, the left inner pin 8 abuts against the inside of the left vertical section to prevent the terminal block from sliding sideways and separating from the coil. The left outer pin 4 abuts against the outside of the upward bend of the terminal block. Together with the upper left outer pin 5 and the upper right outer pin 6, they abut against the outside of the upper horizontal section to prevent the terminal block from sliding upwards and separating from the coil. The upper left inner pin 9 and the right inner pin 10 abut against the inside of the upper horizontal section, along with the upper left outer pin 5 and the upper right outer pin 6... Clamp both ends of the upper horizontal section to prevent the terminal block from deflecting and separating from the coil during welding. When it is necessary to fix the second terminal block structure, pull out the left outer pin 4 and insert the right outer pin 7. As a point of differentiation from the first structure, the second terminal block structure first extends horizontally to form the lower horizontal section, then bends upward to form the right vertical section, and finally bends horizontally in the opposite direction to form the upper horizontal section, which is similar in shape to the first structure. The left inner pin 8 rests against the inside of the lower horizontal section, and the left upper outer pin 5 and the right upper outer pin 6 rest against the outside of the upper horizontal section to prevent the terminal block from sliding upward and separating from the coil. The right outer pin 7 rests against the outside of the right vertical section. To prevent the terminal block from sliding to the side and separating from the coil, the upper left inner pin 9 and the upper right inner pin 10 abut against the inside of the upper horizontal section, and together with the upper left outer pin 5 and the upper right outer pin 6, clamp the two ends of the upper horizontal section to prevent the terminal block from deflecting and separating from the coil during the welding process; there is no need to disassemble the entire fixture seat 1, making the operation time-saving and convenient; by arranging the left inner pin 8, the upper left inner pin 9 and the upper left outer pin 5 longitudinally, and the upper left inner pin 9, the right inner pin 10 and the right outer pin 7 transversely, the force is more evenly distributed when the terminal block is abutted by the positioning pins, improving the stability of the terminal block fixed by the positioning pins.
[0024] The clamp base 1 is provided with a first limiting block 11, a second limiting block 12, and a guide rail 13. The guide rail 13 is horizontally arranged below the fixed base 2. The fixed base 2 is provided with a slider 14 slidably connected to the guide rail 13. The first limiting block 11 and the second limiting block 12 are respectively arranged at both ends of the guide rail 13. The first limiting block 11 is threadedly connected with a limiting bolt 15. The second limiting block 12 is connected to a support spring 16 on the side facing the fixed base 2. The axis of the limiting bolt 15 and the support spring 16 matches the length direction of the guide rail 13. The limiting bolt 15 and the support spring 16 respectively abut against both sides of the fixed base 2.
[0025] The fixed seat 2 is connected to the guide rail 13 by a slider 14. The first limiting block 11 is threadedly connected to the limiting bolt 15. The second limiting block 12 is provided with a support spring 16. The axes of the limiting bolt 15 and the support spring 16 are matched with the length direction of the guide rail 13, and the two abut against the two sides of the fixed seat 2. When the limiting bolt 15 is rotated, the limiting bolt 15 moves with the threaded engagement of the first limiting block 11, pushing the fixed seat 2 closer to the second limiting block 12 along the guide rail 13. The position of the positioning pin on the fixed seat 2 is finely adjusted to ensure that the position of the positioning plate matches the position of the coil. During the process, the fixed seat 2 compresses the support spring 16 and contracts, and the elastic force generated by the support spring 16 increases. When the limiting bolt 15 is rotated in the opposite direction, the elastic force of the support spring 16 pushes the fixed seat 2 closer to the first limiting block 11 and always abuts against the limiting bolt 15, so that the fixed seat 2 can move smoothly on the guide rail 13.
[0026] The side of the fixed base 2 is provided with a spring hole 17 that matches the support spring 16. The end of the support spring 16 is inserted into the spring hole 17 and abuts against the bottom of the spring hole 17.
[0027] The side of the fixed base 2 is provided with a spring hole 17 that matches the support spring 16. The end of the support spring 16 is inserted into the spring hole 17 and abuts against the bottom of the spring hole 17, thereby achieving the abutment between the support spring 16 and the fixed base 2. When the support spring 16 retracts, the hole wall of the spring hole 17 blocks the end of the support spring 16, preventing it from bending or moving to the side, thus assisting the support spring 16 to retract along the axis.
[0028] The clamping base 1 is provided with a third limiting block 18 and a driving cylinder for driving the third limiting block 18 to move vertically. The top of the third limiting block 18 is provided with a slot 19 and a locking plate 20 located on both sides of the slot 19. The position of the slot 19 corresponds to the pull rod of the magnetic component, and the position of the locking plate 20 corresponds to the pull plate of the magnetic component.
[0029] By extending the push rod through the start cylinder of the magnetic component welding machine, the moving iron core is pushed into the frame. The pull rod extends from the other end, and the drive cylinder controlled by the magnetic component welding machine is started. The drive cylinder drives the third limit block 18 to move upward, and the slot 19 moves upward to allow the pull rod to enter. The locking plates 20 on both sides of the slot 19 abut against the pull plate. At this time, the control cylinder of the magnetic component welding machine resets the push rod, and the locking plates 20 prevent the pull plate from moving towards the frame, thus preventing the spring from pushing the moving iron core to reset, eliminating the obstruction of the moving iron core or push rod to the welding point of the terminal board. After welding is completed, the drive cylinder drives the third limit block 18 to move downward, the locking plates 20 and the pull plate are misaligned and separated, and the spring pushes the moving iron core to automatically reset.
[0030] The top edge of the card plate 20 is provided with a chamfered guide slope.
[0031] The top edge of the card plate 20 has a chamfered guide slope. During the upward movement of the card plate 20, the guide slope contacts the edge of the pull plate, squeezing the pull plate to move further away from the skeleton, creating enough space for the card plate 20 to move upward.
Claims
1. A magnetic component welding fixture for flexibly fixing a terminal block, comprising a fixture base, the fixture base having a placement groove matching a magnetic yoke, characterized in that: The fixture base also has a fixed base located on one side of the placement slot. The top surface of the fixed base has positioning pins and pin holes for the positioning pins to be inserted. The positioning pins are arranged to form outer pins and inner pins. The outer pins include a left outer pin, a left upper outer pin, a right upper outer pin, and a right outer pin, which correspond to the positions on the outer side of the magnetic component terminal block. The inner pins include a left inner pin, a left upper inner pin, and a right inner pin, which correspond to the positions on the inner side of the magnetic component terminal block. The left inner pin, the left upper inner pin, and the left upper outer pin are arranged longitudinally, and the left upper inner pin, the right inner pin, and the right outer pin are arranged transversely.
2. The welding fixture for the magnetic assembly of the flexible terminal block according to claim 1, characterized in that: The clamping base is provided with a first limiting block, a second limiting block, and a guide rail. The guide rail is horizontally arranged below the fixed base. The fixed base is provided with a slider that is slidably connected to the guide rail. The first limiting block and the second limiting block are respectively arranged at both ends of the guide rail. The first limiting block is threadedly connected with a limiting bolt. The second limiting block is connected to a support spring on the side facing the fixed base. The axis of the limiting bolt and the support spring matches the length direction of the guide rail. The limiting bolt and the support spring respectively abut against both sides of the fixed base.
3. The welding fixture of claim 2, wherein: The side of the fixing base is provided with a spring hole that matches the support spring, and the end of the support spring is inserted into the spring hole and abuts against the bottom of the spring hole.
4. The welding fixture for the magnetic assembly of the flexible terminal block according to claim 1, wherein: The fixture seat is provided with a third limiting block and a driving cylinder for driving the third limiting block to move vertically up and down. The top of the third limiting block is provided with a slot and a card plate located on both sides of the slot. The position of the slot corresponds to the pull rod of the magnetic component, and the position of the card plate corresponds to the pull plate of the magnetic component.
5. The welding fixture of claim 4, wherein: The top edge of the card plate has a chamfered guide slope.