A jig for welding fisheye terminals with automatic control function

Abstract

This invention relates to the field of welding fixtures, specifically a welding fixture for fisheye terminals with automatic control function. It includes a limiting plate, a material support plate, a width-fixing plate, a thickness-fixing plate, material clamps, a spacing module, a guide plate, and a pressure plate. The material support plate is mounted above the limiting plate. Two width-fixing plates are slidably connected to the material support plate, and are symmetrical about the left and right sides of the material support plate. Two thickness-fixing plates are slidably connected to their respective width-fixing plates. Multiple material clamps are mounted on the width-fixing plates. The spacing module is mounted below the material clamps. The guide plate is slidably connected to the limiting plate. The conductor is placed above the guide plate, and the pressure plate is located above the conductor. This invention achieves the positioning of fisheye terminals of different specifications on conductors of different specifications by controlling the spacing between the double-row fisheye terminal rows and the spacing between each row of fisheye terminals, as well as by adaptively adjusting the thickness of the fisheye terminals.

Description

Technical Field

[0001] This invention relates to the field of welding fixtures, specifically a welding fixture for fisheye terminals with automatic control function. Background Technology

[0002] Fisheye terminals are solderless (pluggable) pins. L-shaped fisheye terminals are one type. In use, the L-shaped pad is soldered onto the conductor. The fisheye end has an elliptical structure with through holes inside, giving it elasticity and flexibility. The fisheye terminal soldered to the conductor can be inserted into a pre-drilled hole on the PCB to complete the electrical connection. If necessary, the conductor with the fisheye terminal can also be directly pulled out of the PCB.

[0003] Traditionally, when welding L-shaped fisheye terminals onto a conductor, the conductor is pre-positioned, and then the fisheye end of the L-shaped fisheye terminal is manually clamped and aligned with the welding position on the conductor before welding. However, several fisheye terminals usually need to be welded in the same column on the conductor, and this method can only complete the welding process repeatedly, which is inefficient. To solve this problem, a fisheye terminal welding jig has emerged, which can clamp multiple fisheye terminals at the same time. After alignment with the conductor, all fisheye terminals can be welded in one positioning process.

[0004] Existing jigs for welding fisheye terminals can improve the welding efficiency of fisheye terminals, but the design of such jigs is usually customized, with a corresponding mold for each conductor. When positioning fisheye terminals for different conductors, the mold in the jig needs to be changed. As a result, the multiple molds in the jig not only increase production costs, but the replacement process also reduces welding efficiency.

[0005] To address this, a jig with automatic control function for welding fisheye terminals is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a jig for welding fisheye terminals with automatic control function, which solves the problem of needing to change molds to adapt to the positioning of fisheye terminals on different guide plates. By controlling the spacing between the double-row fisheye terminals and the spacing between each row of fisheye terminals, as well as the adaptive fisheye terminal thickness, the purpose of positioning fisheye terminals of different specifications on guide plates of different specifications is achieved, thereby avoiding the use of molds and improving welding efficiency.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A jig for welding fisheye terminals with automatic control function, used to clamp and position L-shaped fisheye terminals and conductors, includes a limiting plate, a material support plate, a width plate, a thickness plate, a clamp, a distance module, a guide plate, and a pressure plate. The material support plate is installed above the limiting plate. There are two width plates, which are slidably connected to the material support plate and are symmetrical about the left and right sides of the material support plate. The two thickness plates are slidably connected to their respective width plates. Multiple clamps are installed on the width plates. The distance module is installed below the clamps. The guide plate is slidably connected to the limiting plate. The conductor is placed above the guide plate. The pressure plate is located above the conductor.

[0009] The clamp clamps the L-shaped fisheye terminal in the front-back direction. The two fixed width plates move simultaneously, either far apart or close together, to keep the two sets of L-shaped fisheye terminals at a set distance. The two fixed thickness plates slide on the material support plate to clamp the L-shaped fisheye terminal in the left-right direction. The upper end of the L-shaped fisheye terminal is clamped by the fixed width plate and the conductor.

[0010] Preferably, the clamps are installed in two ways: the frontmost or rearmost clamp is fixedly connected to the width plate, and the remaining clamps are slidably connected to the width plate, and the slidably connected clamps only have translational freedom in the front-back direction.

[0011] First, when placing the conductor, the soldering position of the conductor needs to be aligned with the upper end of the L-shaped fisheye terminal, i.e., the pad. To ensure easy alignment, a set of clamps needs to be provided as a positioning base, i.e., a clamp in a set of clamps is fixed. Furthermore, in actual operation, it is easier to observe when aligning from the edge of the clamping fixture, so the clamp at the front end or the back end is selected to be fixed.

[0012] Different conductor specifications not only have different requirements for the spacing between the two sets of L-shaped fisheye terminals, but also for the arrangement spacing within a set of L-shaped fisheye terminals. It is known that there are many ways to achieve equal spacing adjustment, such as using a cylinder or lead screw module to control each clamp individually. Compared with this solution, the above solution uses split control. To ensure equal spacing adjustment of each clamp, the entire control system needs to have high precision. As a result, the initial assembly cost and the subsequent operating cost of the fixture will increase significantly.

[0013] Preferably, the distance-fixing module includes support rods and lifting plates. The support rods are hinged in pairs and respectively hinged between two adjacent material clamps. The lifting plate is slidably connected to the width-fixing plate, and the hinge points of the support rods are slidably connected to the lifting plate.

[0014] In the above scheme, a single drive is used. By moving the lifting plate up and down, the spacing of a set of clamps is changed equidistantly to adapt to the welding position requirements of different conductors for L-shaped fisheye terminals.

[0015] Preferably, the support rods are staggered on the left and right sides of the lifting plate, and the combined shape of multiple support rods is W-shaped;

[0016] Compared to other combined shapes, this W-shaped structure can control the most clamps with the fewest support rods. Moreover, the symmetrical structure of this shape can ensure the stability of the jig during operation, thereby ensuring the functionality of the jig while reducing production costs.

[0017] Preferably, the clamp includes clamping blades, a fixed plate, and a tension spring. Two clamping blades are hinged to the fixed plate, the lower end of the fixed plate is hinged to the support rod, and the tension spring is arranged between the lower end of the clamping blades and the fixed plate.

[0018] In the above scheme, two tension springs provide preload to the upper end of the clamping blade to clamp the L-shaped fisheye terminal. The symmetrical arrangement of the two tension springs ensures that the clamping jaws of the two clamping blades face upwards, facilitating the insertion of the L-shaped fisheye terminal.

[0019] L-shaped fisheye terminals also come in different specifications and have different thicknesses. Therefore, this invention adapts to the thickness of the fisheye end of the L-shaped fisheye terminal by adjusting the left and right sides of the thickness plate, and adapts to the thickness change of the L-shaped fisheye terminal pad by the following settings.

[0020] Preferably, the material support plate is slidably connected to the limiting plate, and a spring is installed between the material support plate and the limiting plate;

[0021] With the above scheme, the pressure plate is placed on the conductor. During the process of fastening with bolts, the spring is continuously compressed as the bolts are tightened to adapt to the thickness of the L-shaped fisheye terminal pad. The restoring force of the spring after being compressed is converted into a preload force on the L-shaped fisheye terminal, so that the L-shaped fisheye terminal is more stable during the welding process and avoids interference from vibration factors.

[0022] Preferably, a guide screw is installed between the two guide plates, and the guide screw is provided with two sections of threads with opposite directions, and the two sections of threads of the guide screw respectively mesh with the two guide plates;

[0023] Preferably, a width-fixing screw is installed between the two width-fixing plates, and the width-fixing screw is tapped with two sections of threads with opposite directions, and the two sections of threads of the width-fixing screw respectively mesh with the two width-fixing plates;

[0024] Preferably, both the limiting plate and the material support plate are provided with welding windows, and the welding windows are directly opposite the conductor on the guide plate;

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. This invention provides a jig for welding fisheye terminals with automatic control function. By coordinating the control of the column spacing of double-row fisheye terminals, the arrangement spacing of each row of fisheye terminals, and adaptively clamping fisheye terminals of different thicknesses, it solves the problem of existing jigs having a single function and requiring the replacement of special molds for different specifications of products. This invention realizes "adjustment instead of replacement", and only one jig can adapt to guide plates and fisheye terminals of different specifications, improving production versatility and welding efficiency, and reducing manufacturing costs.

[0027] 2. This invention uses two fixed-width plates to move synchronously towards or away from each other by setting fixed-width screws with opposite rotation directions, thus achieving precise adjustment of the spacing between the double-row fisheye terminal blocks. At the same time, it uses a W-shaped combined support rod to control the lifting of the lifting plate with a single drive source, achieving synchronous adjustment of the equal spacing of multiple clamps in each row. These two adjustment methods work together to replace manual labor, forming a collaborative positioning system on a two-dimensional plane. This system can quickly and accurately complete the layout of the entire terminal array, with a compact structure and a high degree of automation, ensuring the reliability of positioning.

[0028] 3. Based on the accurate two-dimensional planar positioning of the L-shaped fisheye terminal, this invention further locks the conductor by means of a pressure plate and uses a spring between the material support plate and the limiting plate to provide an adaptive elastic preload for the clamping system. This structure can not only effectively compensate for the thickness tolerance of the pads of different specifications of fisheye terminals, ensuring that the conductor and all terminals can fit tightly, but also provide a continuous and stable clamping force during the welding process, effectively suppressing vibration interference, thereby ensuring the stability and consistency of welding quality and improving the product yield. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall isometric structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the fixed width and fixed thickness structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the fixed-distance structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the material clamp structure of the present invention;

[0033] Figure 5 This is a schematic diagram of the increased clamp spacing state of the present invention;

[0034] Figure 6 This is a schematic diagram of the welding positioning state of the present invention;

[0035] Figure 7 For the present invention Figure 1 Enlarged diagram of part A in the middle;

[0036] Figure 8 For the present invention Figure 6 Enlarged diagram of section B;

[0037] Figure 9 For the present invention Figure 6 Enlarged diagram of section C.

[0038] In the diagram: 1. Limiting plate; 2. Material support plate; 21. Welding window; 3. Width-fixing plate; 4. Thickness-fixing plate; 5. Material clamp; 51. Clamping knife; 52. Fixed plate; 53. Tension spring; 6. Distance-fixing module; 61. Support rod; 62. Lifting plate; 7. Guide plate; 8. Pressure plate; 9. L-shaped fisheye terminal; 10. Conductor; 11. Spring; 12. Guide screw; 13. Width-fixing screw. Detailed Implementation

[0039] 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.

[0040] Please see Figures 1 to 9 This invention provides a jig for welding fisheye terminals with automatic control function, the technical solution of which is as follows:

[0041] A jig for welding fisheye terminals with automatic control function is used to clamp and position L-shaped fisheye terminals 9 and conductors 10. It includes a limiting plate 1, a material support plate 2, a width-fixing plate 3, a thickness-fixing plate 4, a clamp 5, a spacing module 6, a guide plate 7, and a pressure plate 8. The material support plate 2 is installed above the limiting plate 1. Two width-fixing plates 3 are provided, and a slide rail module is provided between the width-fixing plates 3 and the material support plate 2 to achieve a sliding connection between the two width-fixing plates 3 and the material support plate 2 under motor drive. The two width-fixing plates 3 are adjusted to always be symmetrical about the left and right sides of the material support plate 2. The thickness-fixing plate 4 is connected to the width-fixing plate 3 via a lead screw and a guide post. The lead screw driving the thickness-fixing plate 4 is a ball screw, one end of which is rotatably connected to the width-fixing plate 3 via a bearing seat. A micro stepper motor is also installed on the width-fixing plate 3, and the output shaft of the stepper motor is connected to the other end of the ball screw via a coupling. Each of the left and right width-fixing plates 3... An independent thickness plate 4 driving mechanism is provided, which can achieve self-adaptation for the L-shaped fisheye terminal. When the lead screw rotates, it drives the thickness plate 4 away from or closer to the width plate 3, thereby positioning the L-shaped fisheye terminal 9 in the left and right directions. Multiple material clamps 5 are installed on the width plate 3, and the distance module 6 is installed below the material clamps 5. A slide rail module is set between the guide plate 7 and the limit plate 1 to achieve the sliding connection of the guide plate 7 on the limit plate 1 under the drive of the motor. The conductor 10 is placed above the guide plate 7, the pressure plate 8 is located above the conductor 10, the material support plate 2 is slidably connected to the limit plate 1, and a spring 11 is installed between the material support plate 2 and the limit plate 1. After the pressure plate 8 and the conductor 10 are locked with bolts, the L-shaped fisheye terminal 9 is fixed in the up and down directions. The setting of the spring 11 adapts to the change in thickness of fisheye terminals of different specifications during the locking process, so that the lower end face of the conductor 10 is always in close contact with the guide plate 7 to form a stable positioning.

[0042] The clamp 5 clamps the L-shaped fisheye terminal 9 in the front-back direction. The two fixed width plates 3 move at the same time, either far apart or close together, to keep the two sets of L-shaped fisheye terminals 9 at a set distance. The two fixed thickness plates 4 slide on the material support plate 2 respectively and clamp the L-shaped fisheye terminal 9 in the left-right direction. The upper end of the L-shaped fisheye terminal 9 is clamped by the fixed width plate 3 and the conductor 10.

[0043] As one embodiment of the present invention, refer to Figure 1 and Figure 2 There are two ways to install the clamp 5: the frontmost or rearmost clamp 5 is fixedly connected to the width-fixed plate 3, and the remaining clamps 5 are slidably connected to the width-fixed plate 3. The slidably connected clamps 5 only have the degree of freedom of translation in the front-back direction.

[0044] In actual production, the number of L-shaped fisheye terminals 9 required for each group of conductor 10 welding is often more than 3, and the corresponding number of clamps 5 on each side is also more than 3. In this method, for clear illustration, 3 are used as an example for demonstration. This demonstration method can constitute the complete minimum unit of this application, and thus provide an explanation for the subsequent addition of clamps 5. In this method, the foremost clamp 5 is fixed on the width plate 3 (it can be connected by welding or bolts). When the operator places the conductor 10, by observing the front edge of the clamping fixture, the center of the first welding position of the conductor 10 is aligned with the pad of the L-shaped fisheye terminal 9 held by the foremost clamp. Then the pressure plate 8 is covered and the pressure plate 8 is locked on the guide plate 7 by bolts, thereby completing the positioning of the L-shaped fisheye terminal 9 in the vertical direction.

[0045] As one embodiment of the present invention, refer to Figures 3-5 The distance-fixing module 6 includes support rods 61 and lifting plates 62. The support rods 61 are hinged in pairs and respectively hinged between two adjacent clamps 5. The lifting plate 62 is slidably connected to the width-fixing plate 3. The hinge points of the support rods 61 are slidably connected to the lifting plate 62. The support rods 61 are staggered on the left and right sides of the lifting plate 62, and the combination shape of multiple support rods 61 is W-shaped. Compared with M-shaped or other shapes, the W-shaped shape ensures the overall symmetry of the support rods 61 to ensure motion stability, and can also maximize the number of controlled clamps 5 while reducing the number of support rods 61, thereby reducing the production cost of the fixture.

[0046] A lifting screw is vertically installed on each fixed width plate 3. The lifting screw is rotatably mounted on the fixed width plate through upper and lower bearing seats. The lifting plate 62 is provided with a threaded hole that mates with the lifting screw. A bevel gear is fixedly connected to the lower end of the lifting screw. A servo motor is horizontally installed on the fixed width plate 3. A bevel gear that meshes with the bevel gear on the lifting screw is fixedly connected to its output shaft. When the servo motor rotates, it drives the lifting screw to rotate through a transmission mechanism composed of a pair of bevel gears, thereby driving the lifting plate 62 to move precisely up and down along the lifting screw.

[0047] Before positioning, the arrangement spacing of each group of L-shaped fisheye terminals 9 is determined. Then, a pair of bevel gears are driven by a motor to adjust the height of the lifting plate 62. The higher the lifting plate 62 is, the larger the spacing of the L-shaped fisheye terminals 9 can be positioned. The specific relationship between the height of the lifting plate 62 and the spacing of the clamp 5 is the relationship between the height of an isosceles triangle and the length of its base, from which the corresponding calculation formula can be derived.

[0048] As one embodiment of the present invention, refer to Figure 4 and Figure 5The material clamp 5 includes clamping blades 51, a fixed plate 52, and a tension spring 53. The two clamping blades 51 are hinged to the fixed plate 52. The lower end of the fixed plate 52 is hinged to the support rod 61. The tension spring 53 is arranged between the lower end of the clamping blades 51 and the fixed plate 52.

[0049] When the clamp 5 is not holding an object, the lower end of the clamping blade 51 is tightened by the tension of the tension spring 53. Correspondingly, the upper ends of the two clamping blades 51 also close. When positioning the L-shaped fisheye terminal 9, the width plate 3 is adjusted and the thickness is pre-adjusted first (at this time, the gap between the thickness plate 4 and the width plate 3 is slightly larger than the thickness of the L-shaped fisheye terminal 9). Then, the fisheye end of the L-shaped fisheye terminal 9 is inserted between the two clamping blades 51. Since the upper end of the clamping blade 51 and the fisheye end of the L-shaped fisheye terminal 9 are both arc structures, the insertion process is less affected by resistance. After all the L-shaped fisheye terminals 9 are inserted into the corresponding clamps 5, the thickness plate 4 is adjusted again to press the L-shaped fisheye terminals 9, thus completing the positioning in the left and right directions.

[0050] As one embodiment of the present invention, refer to Figure 1 and Figure 7 A guide screw 12 is installed between the two guide plates 7. The guide screw 12 is threaded with two sections of opposite directions, and the two sections of the guide screw 12 are respectively engaged with the two guide plates 7.

[0051] When the motor drives the guide screw 12 to rotate, the two guide plates 7 move close to or far from each other at equal distances with the left and right symmetrical planes of the limiting plate 1 as a reference, in order to adapt to conductors 10 of different widths. In the same way as the adjustment method of the fixed width plate 3, a pre-adjustment is first performed so that the distance between the two fixed width plates 3 is slightly larger than the width of the conductor 10. Before the pressure plate 8 is put on, the guide plates 7 are adjusted a second time so that the guide plates 7 clamp the conductor 10.

[0052] As one embodiment of the present invention, refer to Figure 6 , Figure 8 and Figure 9 A width-fixing screw 13 is installed between the two width-fixing plates 3. The width-fixing screw 13 is tapped with two sections of threads with opposite directions, and the two sections of threads of the width-fixing screw 13 respectively mesh with the two width-fixing plates 3.

[0053] When the motor drives the fixed-width lead screw 13 to rotate, the two fixed-width plates 3 move close or far apart at equal distances with the left and right symmetrical planes of the limiting plate 1 as a reference, so as to adapt to the different welding positions of the conductor 10 to the L-shaped fish-eye terminal 9.

[0054] As one embodiment of the present invention, refer to Figure 6 Both the limiting plate 1 and the material support plate 2 are provided with welding windows 21, which are directly opposite the conductor 10 on the guide plate 7.

[0055] When the conductor 10 and the L-shaped fisheye terminal 9 are positioned for welding, the fixture is first inverted so that the limiting plate 1 faces upward. Then, the laser welder above the fixture passes through the welding window 21 to weld the L-shaped fisheye terminal 9 inside the fixture.

[0056] This fixture also includes a control system, which comprises a programmable logic controller (PLC), several motor drivers, and a human-machine interface (HMI). Its workflow is as follows:

[0057] 1. The operator selects or enters the model parameters of the product to be soldered on the HMI, including the column spacing, row spacing, and thickness of the L-shaped fisheye terminal 9, as well as the width of the conductor 10;

[0058] 2. After receiving the parameters, the PLC calculates the required rotation angle or number of turns for the fixed width lead screw 13, guide lead screw 12, fixed thickness plate 4 drive lead screw, and lifting plate 62 drive lead screw according to the preset algorithm.

[0059] 3. The PLC sends instructions to each motor driver sequentially or synchronously to drive the corresponding motor to rotate and move the fixed width plate 3, guide plate 7, fixed thickness plate 4 and lifting plate 62 to the calculated target position.

[0060] 4. After positioning is completed, the system prompts the operator to place the L-shaped fisheye terminal 9 and conductor 10, and tighten the pressure plate 8 with bolts;

[0061] 5. After all positioning and clamping actions are completed, the fixture is ready and the subsequent welding process can be carried out.

[0062] Working Principle: This invention aims to achieve rapid, precise positioning and stable clamping of fisheye terminals and conductors 10 of different specifications through a three-dimensional collaborative adjustment and adaptive clamping system, thereby replacing multiple special molds with a single clamping fixture. To achieve this, the specific method is as follows: First, the spacing between the double-row terminals and the arrangement spacing within each row of terminals are independently controlled by the first-dimensional width-fixing screw 13 and the second-dimensional distance-fixing module 6, respectively, to complete the two-dimensional layout of the terminals on the plane; then, the adaptive clamping mechanism composed of the third-dimensional pressure plate 8 and spring 11 completes the vertical positioning and pre-tightening of terminals of different thicknesses, and finally locks all components, providing ideal conditions for subsequent welding.

[0063] To flexibly adapt to conductors 10 of different widths and the column spacing of matching double-row fisheye terminals, the present invention specifically employs two width-fixing plates 3 driven by a width-fixing screw 13. The width-fixing screw 13 has two threads with opposite directions, which mesh with the two width-fixing plates 3 respectively. When the motor drives the width-fixing screw 13 to rotate, the two width-fixing plates 3 move synchronously towards or away from each other, using the center of the clamping fixture as a reference, thereby quickly and accurately adjusting the distance between the two rows of clamps 5 to meet the column spacing requirements of different specifications. Similarly, the guide plate 7 is also synchronously adjusted via a similar guide screw 12 to clamp conductors 10 of different widths.

[0064] In order to further adjust the arrangement spacing of multiple fisheye terminals in each column after the column spacing is determined, so as to match different welding points on conductor 10, the present invention combines multiple support rods 61 into a W shape and hinges the support rods 61 to a lifting plate 62 that can slide up and down. When the drive mechanism (such as the motor in the present invention that drives the lead screw through a pair of bevel gears) makes the lifting plate 62 vertically rise and fall, the W-shaped combined support rod 61 structure will push or pull all the sliding material clamps 5 except the first or the last one through the lever principle, so that they can expand or contract synchronously and equidistantly on the fixed width plate 3.

[0065] To ensure stable clamping of the fisheye terminals and adaptability to thickness variations after planar positioning, while ensuring close contact between the conductor 10 and the pads of all terminals, the operator first inserts the L-shaped fisheye terminals 9 into the material clamp 5, which consists of two clamping blades 51 and a tension spring 53, with the tension spring 53 providing initial clamping force. Then, the conductor 10 is placed above the guide plate 7, and the pressure plate 8 is closed for locking. During locking, the downward force of the pressure plate 8 is transmitted to the material support plate 2, causing it to move downwards and compress the spring 11 below it. The compressed spring 11 generates a continuous upward restoring force. This force not only automatically compensates for thickness differences between fisheye terminals of different specifications, ensuring stable contact, but also provides a strong preload for the entire clamping system, effectively suppressing vibrations during welding and thus ensuring welding quality.

[0066] After all positioning and clamping steps are completed, the entire fixture is flipped over to complete the welding. Specifically, welding windows 21 are reserved on the limiting plate 1 and the material support plate 2. The external laser welding head can weld the connection between the L-shaped fisheye terminal 9 and the conductor 10 held inside the fixture through the welding window 21 to complete the entire operation process.

[0067] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A jig for welding fisheye terminals with automatic control function, used to clamp and position L-shaped fisheye terminals (9) and conductors (10), characterized in that: The device includes a limiting plate (1), a material support plate (2), a width plate (3), a thickness plate (4), a material clamp (5), a distance module (6), a guide plate (7), and a pressure plate (8). The material support plate (2) is installed above the limiting plate (1). There are two width plates (3). The two width plates (3) are slidably connected to the material support plate (2), and the two width plates (3) are symmetrical about the left and right sides of the material support plate (2). The two thickness plates (4) are slidably connected to the corresponding width plates (3). Multiple material clamps (5) are installed on the width plates (3). The distance module (6) is installed below the material clamps (5). The guide plate (7) is slidably connected to the limiting plate (1). The conductor (10) is placed above the guide plate (7). The pressure plate (8) is located above the conductor (10). The clamp (5) clamps the L-shaped fisheye terminal (9) in the front-back direction. The two fixed width plates (3) move at the same time, either far apart or close together, to keep the two sets of L-shaped fisheye terminals (9) at a set distance. The two fixed thickness plates (4) slide on the material support plate (2) respectively to clamp the L-shaped fisheye terminal (9) in the left-right direction. The upper end of the L-shaped fisheye terminal (9) is clamped by the fixed width plate (3) and the conductor (10). The distance-fixing module (6) includes a support rod (61) and a lifting plate (62). The support rods (61) are hinged in pairs and respectively hinged between two adjacent material clamps (5). The lifting plate (62) is slidably connected to the width-fixing plate (3). The hinge point of the support rods (61) is slidably connected to the lifting plate (62). The support rods (61) are staggered on the left and right sides of the lifting plate (62), and the combined shape of multiple support rods (61) is W-shaped.

2. The jig for welding fisheye terminals with automatic control function according to claim 1, characterized in that: There are two ways to install the clamps (5): the clamps (5) at the front end or the rear end are fixedly connected to the width plate (3), and the other clamps (5) are slidably connected to the width plate (3). The slidably connected clamps (5) only have the degree of freedom of translation in the front-back direction.

3. The jig for welding fisheye terminals with automatic control function according to claim 1, characterized in that: The clamp (5) includes a clamping blade (51), a fixed plate (52) and a tension spring (53). The two clamping blades (51) are hinged to the fixed plate (52). The lower end of the fixed plate (52) is hinged to the support rod (61). The tension spring (53) is arranged between the lower end of the clamping blade (51) and the fixed plate (52).

4. A jig for welding fisheye terminals with automatic control function according to claim 1, characterized in that: The material support plate (2) is slidably connected to the limiting plate (1), and a spring (11) is installed between the material support plate (2) and the limiting plate (1).

5. A jig for welding fisheye terminals with automatic control function according to claim 4, characterized in that: A guide screw (12) is installed between the two guide plates (7). The guide screw (12) has two threads with opposite directions, and the two threads of the guide screw (12) mesh with the two guide plates (7) respectively.

6. A jig for welding fisheye terminals with automatic control function according to claim 4, characterized in that: A width-fixing screw (13) is installed between the two width-fixing plates (3). The width-fixing screw (13) has two threads with opposite directions, and the two threads of the width-fixing screw (13) mesh with the two width-fixing plates (3) respectively.

7. A jig for welding fisheye terminals with automatic control function according to claim 1, characterized in that: Both the limiting plate (1) and the material support plate (2) are provided with welding windows (21), and the welding windows (21) are directly opposite the conductor (10) on the guide plate (7).

Images