Technology and device for converting linear dot matrix pin of circuit element into trapezoidal dot matrix pin

Abstract

The invention discloses a process and a device for converting a linear dot matrix pin of a circuit element into a trapezoidal dot matrix pin. The process comprises the following steps: step 1, a plurality of pins in a linear array on a to-be-converted element at least sequentially comprise a first pin, a second pin, a third pin, a fourth pin and a fifth pin along the array direction; 2, performing length trimming on the tail end of each pin to enable the second pin and the fourth pin to be shorter than the first pin, the third pin and the fifth pin by L; 3, vertically bending the parts, which are longer than the second pin and the fourth pin, of the tail ends of the first pin, the third pin and the fifth pin towards the side a to form a first pin bending section, a third pin bending section and a fifth pin bending section; 4, vertically bending the side a of the tail end of the second pin and the side a of the tail end of the fourth pin to form a second pin bending section and a fourth pin bending section; and reliable pin array conversion is automatically realized.

Description

Technical Field

[0001] This invention belongs to the field of component reprocessing. Background Technology

[0002] In the field of electronic manufacturing and assembly, many circuit components, such as connectors, relays, or integrated circuit modules, are shipped with a single row of linear array pins as standard. However, in order to adapt to the stability of the connection with the PCB, the design of heat dissipation channels, or the electromagnetic shielding structure, it is often necessary to convert this linear pin array into a trapezoidal dot matrix pin with three-dimensional spatial misalignment, thereby enhancing the connection stability and anti-interference performance of the components.

[0003] Currently, the industry commonly uses simple fixtures for this type of pin forming. The main limitations are as follows: 1. It relies on manual bending of each pin individually, making batch continuous operation impossible. 2. It is difficult to precisely control the bending angle, length, and position, resulting in low consistency between pins and affecting subsequent soldering quality and connection reliability. 3. Improper operation can easily lead to pin twisting, damage to the plating, or even damage to the component itself. Therefore, an automated, specialized process and device are needed to achieve reliable pin array conversion. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a process and apparatus for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins, thereby automating and reliably realizing pin array conversion.

[0005] Technical solution: To achieve the above objectives, the present invention provides a process for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins:

[0006] Step 1: The components to be converted have a linear array of pins, which include at least the first pin, the second pin, the third pin, the fourth pin, and the fifth pin in sequence along the array direction.

[0007] Step 2: Trim the length of the ends of each pin so that the second and fourth pins are both L shorter than the first, third, and fifth pins;

[0008] Step 3: Bend the portions of the first, third, and fifth pins that extend beyond the second and fourth pins vertically toward side a to form the first pin bending segment, the third pin bending segment, and the fifth pin bending segment;

[0009] Step 4: Bend the ends a of the second and fourth pins vertically to form the bent sections of the second and fourth pins.

[0010] Step 5: Bend the first, second, third, fourth, and fifth pins vertically towards side b at the same bending point at the same distance from the pin root. This will cause the ends of the bent segments of the first, second, third, fourth, and fifth pins to be flipped vertically downwards and arranged in a trapezoidal dot matrix.

[0011] Furthermore, the lengths of the second and fourth pin bends are L.

[0012] Furthermore, it includes a fixed plate with a cutout of a limit groove; it also includes a horizontal lifting splicing plate that can move up and down. In the initial state, the upper end of the lifting splicing plate is in contact with the lower end surface of the fixed plate. The lifting splicing plate is composed of plate a and plate b horizontally spliced ​​together; the end of plate a away from plate b is fixed on a lifting seat that can move up and down actively; plate a is connected to plate b through a horizontal telescopic device.

[0013] When plates a and b are spliced ​​together, the splice joint between plates a and b forms several longitudinally continuous pin shuttle channels that are equidistantly arranged along the splice seam; from a top view, each pin shuttle channel is within the range of the limiting groove.

[0014] When the first, second, third, fourth, and fifth pins of the component to be converted are inserted downward into their respective pin shuttle channels, the inner contour of the limiting groove provides limiting support for the lower end face of the component to be converted.

[0015] There are several execution blocks on the lower side of the end of board A that is close to board B. Each of the execution blocks corresponds to a number of pin shuttle channels.

[0016] On the underside of plate a, there are several guide rails extending along the length direction; each actuator has a slider fixedly connected to the end away from plate b via a linkage arm; each slider is guided and fitted in its corresponding guide rail.

[0017] The upper surface of the actuator is a sliding surface that slides with the lower surface of plate a. The upper side of the actuator away from the linkage arm has a recessed step surface that is lower than the sliding surface. The corner of the recessed step surface away from the linkage arm forms a push-up rounded corner. The thickness of the gap between the recessed step surface and the lower surface of plate a is the same as the thickness of each pin. The corner of the sliding surface away from the linkage arm is a cutting edge with a radius of less than °. The end face of the actuator away from the linkage arm is a vertical constraint surface.

[0018] Furthermore, a floating strip pusher is provided on the side of several actuators away from the linkage arm. The length direction of the floating strip pusher is perpendicular to the extension direction of each a guide rail. The upper surface of the floating strip pusher is at the same height as the sinking step surface of each actuator. A b guide rail parallel to the a guide rail is fixedly installed inside the housing. A b slider is provided in the b guide rail. The b slider is fixedly connected to the floating strip pusher through the synchronization arm.

[0019] Furthermore, the execution blocks are designated as the first execution block, the second execution block, the third execution block, the fourth execution block, and the fifth execution block; the first execution block, the second execution block, the third execution block, the fourth execution block, and the fifth execution block correspond one-to-one with the first pin, the second pin, the third pin, the fourth pin, and the fifth pin, respectively.

[0020] S1, insert the first, second, third, fourth and fifth pins of the component to be converted into their respective pin shuttle channels on the lifting splicing plate until the inner contour of the limiting groove supports the lower end face of the component to be converted. At this time, the robot arm holds the component body.

[0021] S2, trim the length of the ends of each pin so that the second and fourth pins are both L shorter than the first, third, and fifth pins; the specific process for trimming the length of any pin is as follows:

[0022] The lifting device controls the lifting splicing plate to descend to a predetermined height. At this point, the portion of the target pin that is below the splicing plate is the segment to be cut.

[0023] The control block corresponding to the target pin moves forward until the vertical constraint surface at the front end of the control block pushes the segment to be cut forward and bends it, so that the segment to be cut bends vertically forward around the root and is horizontally clamped between the b plate and the sunken step surface after the vertical bend.

[0024] Then, the execution block continues to move forward, causing the cutting blade to move forward to cut off the root of the segment to be cut. Subsequently, the segment to be cut, which has already been cut off, continues to move forward with the execution block until it moves forward and detaches from the B-board. Under the action of gravity, it automatically falls to the ground, thus ending the process of adjusting the length of any pin.

[0025] S3, control the lifting splicing plate to rise to a predetermined height. The first, second, third, fourth, and fifth pins adaptably shuttle through their respective pin shuttle channels, ensuring that the lower ends of the first, third, and fifth pins each have a portion of length L below the lower surface of the lifting splicing plate. Then, control the first, third, and fifth execution blocks corresponding to the first, third, and fifth pins to advance forward until the vertical constraint surfaces at the front ends of the first, third, and fifth execution blocks respectively push the lower ends of the first, third, and fifth pins of length L forward, causing the lower ends of the first, third, and fifth pins of length L to bend vertically forward, thus forming the first pin bending segment, the third pin bending segment, and the fifth pin bending segment. The formed first pin bending segment, third pin bending segment, and fifth pin bending segment are horizontally sandwiched between their respective b-plates and the sunken step surface.

[0026] The forward displacement of the first, third, and fifth execution blocks is shorter than that of the "S" sequence. After the first, third, and fifth pin bending segments are formed, the first, third, and fifth execution blocks immediately stop moving forward. This ensures that the cutting edges on the first, third, and fifth execution blocks do not reach the root of the newly formed first, third, and fifth pin bending segments before immediately retracting back to their initial positions.

[0027] S4, the lifting device controls the lifting splicing plate to rise to a predetermined height. The first pin, second pin, third pin, fourth pin, and fifth pin adaptably shuttle in their respective pin shuttle channels, so that the lower ends of the second pin and the fourth pin have a portion of length L that is lower than the lower surface of the lifting splicing plate. Then, the second and fourth actuators corresponding to the second pin and the fourth pin are controlled to move forward until the vertical constraint surfaces at the front ends of the second and fourth actuators respectively push the lower ends of the second pin and the fourth pin with a length of length L forward, so that the lower ends of the second pin and the fourth pin with a length of length L are bent forward vertically, thus forming the second pin bending segment and the fourth pin bending segment. The formed second pin bending segment and the fourth pin bending segment are horizontally sandwiched between their respective b plates and the sunken step surface.

[0028] The forward displacement of the second and fourth execution blocks is also shorter than that of the "S" sequence. After the second and fourth pin bending segments are formed, the second and fourth execution blocks immediately stop moving forward, so that the cutting edges on the second and fourth execution blocks do not cut forward to the root of the newly formed second and fourth pin bending segments before immediately retracting back to the initial position.

[0029] S5, the lifting device controls the lifting splicing plate to rise to the lower surface of the limit contact fixing plate; in order to avoid interference from subsequent movements, it controls each actuator to move backward with sufficient stroke.

[0030] Then, control the floating strip pusher to move backward. Simultaneously, the floating strip pusher will bend the first pin, the second pin, the third pin, the fourth pin, and the fifth pin vertically backward with the bending point at the height of the lower end of the lifting splicing plate. This will cause the ends of the bending segments of the first pin, the second pin, the third pin, the fourth pin, and the fifth pin to be flipped to face downward vertically and to form a trapezoidal dot matrix distribution.

[0031] S6, the horizontal expansion joint controls plate b to move away from plate a, so that plate b and plate a are separated to a sufficiently far distance from each other.

[0032] Beneficial Effects: This invention proposes a process route combining step-by-step differentiation and synchronous forming, namely, "differential trimming first, step-by-step directional bending, and finally synchronous forming." First, the length of specific pins is precisely trimmed, laying the foundation for creating spatial differences. Next, a first directional (side a) 90-degree bend is performed step-by-step on different pin groups, forming horizontally bent segments of equal length but staggered horizontal positions. Finally, a second reverse (side b) 90-degree synchronous bend is performed at a uniform height, causing all horizontal segments to flip downwards, naturally and precisely forming the desired trapezoidal spatial lattice at their ends. This method decomposes complex three-dimensional forming into ordered and controllable two-dimensional operations, with rigorous logic and excellent repeatability.

[0033] This solution also features a unique fast-acting module that integrates a push-up fillet, a recessed step surface, and a cutting edge. A single fast-acting module, controlled by a program at different strokes, can sequentially perform the functions of "pushing and bending the pin" and "cutting off excess length" without changing tools. The structure is compact and the operation is highly efficient.

[0034] The lifting splicing plate integrates multiple functions such as a shuttle channel, a length trimming reference surface, and a bending limit surface. Combined with a programmable lifting mechanism and a fast-acting independent drive system, it can precisely control the exposed pin length, bending timing, and position.

[0035] The floating strip pusher can act on all pins at once, ensuring that the starting height of the second bend of all pins is absolutely consistent. This is the key to achieving coplanar projection of the end of the trapezoidal dot matrix, ensuring the overall accuracy and consistency of the forming.

[0036] The entire process determines the length of the processing section by controlling the lifting height, distinguishes between "bending" and "cutting" actions by controlling the fastest advance stroke, and ensures the consistency of the final shape through the synchronous movement of the floating pusher. The principle is clear, and the parameters of each step are quantifiable and programmable.

[0037] This solution integrates pin length trimming, multi-directional bending, and final shaping into a single, automated process, achieving a fully automated, unmanned conversion from straight pins to trapezoidal pins. This significantly improves production efficiency, molding accuracy, and product consistency. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall process.

[0039] Figure 2 This is a schematic diagram of the overall device.

[0040] Figure 3 This is a schematic diagram of the internal structure of the device after the outer casing has been removed.

[0041] Figure 4 This is a schematic diagram of the lifting and splicing panel structure;

[0042] Figure 5 A schematic diagram of the process from S1 to S2

[0043] Figure 6 for Figure 3 An enlarged view of mark 15, and a detailed process diagram of S2;

[0044] Figure 7 This is a schematic diagram of the S3 to S5 process. Detailed Implementation

[0045] The invention will now be further described with reference to the accompanying drawings.

[0046] like Figure 1 The process of converting the linear dot matrix pins of the circuit element shown into trapezoidal dot matrix pins includes the following steps:

[0047] Step 1: Prepare a component 2 to be converted. The component 2 has a linear array of pins 6, including at least a first pin 6a, a second pin 6b, a third pin 6c, a fourth pin 6d, and a fifth pin 6e along the array direction. Component 2 can be a rectangular connector, a multi-channel relay, or a modular circuit with a single row of pins. Pins 6 are typically made of a highly conductive metal material, such as phosphor bronze, brass, or an alloy.

[0048] Step two involves trimming the lengths of the ends of each pin 6, ensuring that pins 6b and 6d are both shorter by a value L than pins 6a, 6c, and 6e. This length difference L is a crucial design parameter, its specific value depending on the desired step depth of the trapezoidal lattice. Typically, L is around 3-6 millimeters, set according to the component specifications. This step lays the foundation for the subsequent formation of bent segments with different planes.

[0049] Step 3: Bend the portions of the first pin 6a, the third pin 6c, and the fifth pin 6e that extend beyond the second pin 6b and the fourth pin 6d perpendicularly towards side a, thus forming the first pin bending segment 6aa, the third pin bending segment 6cc, and the fifth pin bending segment 6ee; the length of the first pin bending segment 6aa, the third pin bending segment 6cc, and the fifth pin bending segment 6ee is L. This bend is the first directional bend, the purpose of which is to utilize the length difference generated in step 2 to form a laterally extended segment on side a that is in the same plane. The bending angle is required to be 90°±2° to ensure the geometric accuracy of subsequent steps.

[0050] Step four: Vertically bend the ends (a-side) of the second pin 6b and the fourth pin 6d to form the second pin bend segment 6bb and the fourth pin bend segment 6dd; the lengths of the second pin bend segment 6bb and the fourth pin bend segment 6dd are L. This step is similar to step three, but it is for the shorter pins, forming a horizontal bend segment of length L on the a-side as well. At this point, all pins have horizontal bend segments of equal length on the a-side, but these bend segments are still on the same plane.

[0051] Step 5: Simultaneously bend the first pin 6a, second pin 6b, third pin 6c, fourth pin 6d, and fifth pin 6e vertically towards side b at the same bending point from the pin root. This causes the ends of the bent segments 6aa, 6bb, 6cc, 6dd, and 6ee of the first pin to be flipped vertically downwards, forming a trapezoidal dot matrix distribution. This step is crucial for forming the final trapezoidal array. By simultaneously bending in the opposite direction at the same height of all pins, the bent segments that originally extended horizontally on side a are flipped downwards. Since steps two to four have already staggered the starting positions of the bent segments on the horizontal plane, after this simultaneous downward bending, the ends of these bent segments naturally exhibit a trapezoidal distribution on the vertical projection plane. This simultaneous bending ensures that the final effective contact points of all pins are located on different but regularly progressive vertical projection lines.

[0052] like Figure 2 , 3 As shown in Figure 4, the device for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins is characterized by: a device housing 1, on which a fixing plate 5 is fixedly mounted by a locking component, and a limiting groove 4 is hollowed out; a horizontal lifting splicing plate 45 capable of lifting and lowering is set inside the housing 1. In the initial state, the upper end of the lifting splicing plate 45 is in contact with the lower surface of the fixing plate 5. The lifting splicing plate 45 is composed of a plate 7 and a plate 8 horizontally spliced ​​together; the end of plate 7 away from plate 8 is fixed on a lifting seat 47 capable of active lifting and lowering; plate 7 is connected to plate 8 through a horizontal telescoping device 14. The shape of the limiting groove 4 matches the body contour of the component 2 to be processed, and is used for precise positioning and support of the component. The lifting splicing plate 45 is the core pin processing platform, and its lifting and lowering movement is realized by a precision linear module with a stroke accuracy of ±0.02mm. The splicing design of plate 7 and plate 8 allows for separation after processing to remove the finished product. The horizontal telescoping device 14 can be a small cylinder or an electric push rod.

[0053] When plates a7 and b8 are joined, the joint between them forms several longitudinally extending pin shuttle channels 3, evenly spaced along the seam. From a top-down view, each pin shuttle channel 3 lies within the limiting groove 4. To facilitate pin insertion, the upper inner contour of each pin shuttle channel 3 is chamfered. The diameter or width of the pin shuttle channel 3 is slightly larger than the pin diameter, ensuring the pin can pass freely while providing sufficient lateral guidance. The chamfer is typically 45° × 0.2mm for easy pin insertion.

[0054] When the first pin 6a, the second pin 6b, the third pin 6c, the fourth pin 6d, and the fifth pin 6e of the component 2 to be converted are inserted downward into their respective pin shuttle channels 3, the inner contour of the limiting groove 4 limits and supports the lower end face of the component 2 to be converted; a number of actuators 9 are slidably fitted on the lower side of the end of plate a 7 near plate b 8, and the number of actuators 9 corresponds one-to-one with the number of pin shuttle channels 3.

[0055] Several guide rails 48 extending along the length direction are equidistantly arranged on the lower side of plate 7; each actuator 9 has an a slider 16 fixedly connected to its end away from plate 8 via a linkage arm 17; each a slider 16 is guided and fitted in its corresponding guide rail 48; each guide rail 48 is equipped with a linear displacement device 18 that can drive the corresponding a slider 16. The guide rails 48 are high-precision linear guides to ensure smooth movement of the actuator 9.

[0056] like Figure 4 The upper surface of the actuator 9 is a sliding surface 51 that slides with the lower surface of plate a 7. The actuator 9 is made of cemented carbide or tool steel to keep the cutting edge sharp and wear-resistant. The upper side of the actuator 9 away from the linkage arm 17 is provided with a recessed step surface 21 that is lower than the sliding surface 51. The corner of the recessed step surface 21 away from the linkage arm 17 forms a push-up rounded corner 22. The thickness of the gap between the recessed step surface 21 and the lower surface of plate a 7 is consistent with the thickness of each pin 6. This design is crucial because it allows the pin to be precisely restricted to bending at 90° within the "sandwich" formed by the lower surface of plate a 7 and the recessed step surface 21 when bending, ensuring the flatness and consistency of the bending section.

[0057] The edge of the sliding surface 51 away from the linkage arm 17 is a cutting edge 20 with an angle of less than 90°; the end face of the actuator 9 away from the linkage arm 17 is a vertical constraint surface 52; the lower end face of the actuator 9 is a bottom surface 31.

[0058] A floating strip pusher 8 is provided on the side of several actuators 9 away from the linkage arm 17. The length direction of the floating strip pusher 8 is perpendicular to the extension direction of each a guide rail 48. The upper surface of the floating strip pusher 8 is at the same height as the sinking step surface 21 of each actuator 9. Its function is to provide a wide-area, synchronous thrust in step five, bending all the bending points of the pins backward (b side) at once. A b guide rail 48 parallel to the a guide rail 48 is fixedly installed inside the housing 1. A b slider 13 is provided in the b guide rail 48. The b slider 13 is fixedly connected to the floating strip pusher 8 through the synchronization arm 11. It also includes a displacement device that can drive the b slider 13 to move.

[0059] The execution blocks 9 are designated as first execution block 9a, second execution block 9b, third execution block 9c, fourth execution block 9d, and fifth execution block 9e; the first execution block 9a, second execution block 9b, third execution block 9c, fourth execution block 9d, and fifth execution block 9e correspond one-to-one with the first pin 6a, second pin 6b, third pin 6c, fourth pin 6d, and fifth pin 6e, respectively.

[0060] like Figure 5 , 6 The detailed working method is shown in section 7:

[0061] S1, In the initial state, plate a7 and plate b8 are spliced ​​together to form a lifting splicing plate 45. The upper end of the lifting splicing plate 45 is in contact with the lower surface of the fixed plate 5. Each pin shuttle channel 3 is within the range of the limiting groove 4. At this time, the first pin 6a, second pin 6b, third pin 6c, fourth pin 6d, and fifth pin 6e of the component 2 to be converted are inserted downwards into their respective pin shuttle channels 3 on the lifting splicing plate 45 by a robotic arm or manually, until the inner contour of the limiting groove 4 limits and supports the lower surface of the component 2 to be converted. At this time, the robotic arm supports the body of the component 2, such as... Figure 5 As shown in the image above.

[0062] S2 (detailed process of step two): Trim the length of the ends of each pin 6 so that the second pin 6b and the fourth pin 6d are both L shorter than the first pin 6a, the third pin 6c, and the fifth pin 6e; the specific process of trimming the length of any pin 6 is as follows:

[0063] The lifting device controls the lowering of the splicing plate 45 to a predetermined height. At this point, the portion of the target pin 6 below the splicing plate 45 is the segment to be cut 23. Figure 5 The image below and Figure 6 As shown in the figure above; the descent height H1 is precisely set according to the length L to be cut and the bending process requirements to ensure that a sufficiently long section 23 to be cut is exposed.

[0064] Then, the execution block 9 corresponding to the target pin 6 is controlled to advance forward until the vertical constraint surface 52 at the front end of the execution block 9 pushes the segment 23 to be cut forward and bends it vertically around the root, so that the vertically bent segment 23 is horizontally sandwiched between plate b 8 and the sunken step surface 21; Figure 6 The process utilizes the elastic-plastic deformation properties of the pin material, and through the translation of the vertical constraint surface 52, forces the pin to bend 90° at the channel exit edge (bending point).

[0065] Then, the fast 9 continues to advance, causing the cutting blade 20 to move forward until it cuts the root of the segment 23 to be cut. The already cut segment 23 then follows the fast 9 and continues to move forward until it detaches from plate 8 and falls automatically under gravity. Figure 6 As shown in the diagram below; this concludes the process of trimming the length of any pin 6. The cutting action of the cutting blade 20 occurs after the bent section is flattened against the sunken step surface 21, with the cutting point located at the root of the bend, resulting in a clean cut. Differentiated length trimming can be achieved by controlling the execution blocks corresponding to the second and fourth pins respectively to complete this operation.

[0066] S3 to S5, as Figure 7 As shown:

[0067] S3 (Detailed process of step three): The lifting device controls the lifting splicing plate 45 to rise to a predetermined height. The first pin 6a, the second pin 6b, the third pin 6c, the fourth pin 6d, and the fifth pin 6e adaptably shuttle through their respective pin shuttle channels 3, so that the lower ends of the first pin 6a, the third pin 6c, and the fifth pin 6e all have a portion of length L that is lower than the lower surface of the lifting splicing plate 45. Then, the first execution block 9a, the third execution block 9c, and the fifth execution block 9e corresponding to the first pin 6a, the third pin 6c, and the fifth pin 6e are controlled to move forward until the vertical constraint surface 52 at the front end of the first execution block 9a, the third execution block 9c, and the fifth execution block 9e respectively pushes the portion of length L at the lower end of the first pin 6a, the third pin 6c, and the fifth pin 6e forward and bends it, so that the portion of length L at the lower end of the first pin 6a, the third pin 6c, and the fifth pin 6e is bent forward vertically, thereby forming the first pin bending segment 6aa, the third pin bending segment 6cc, and the fifth pin bending segment 6ee. The first pin bending segment 6aa, the third pin bending segment 6cc, and the fifth pin bending segment 6ee are horizontally sandwiched between their respective b plates 8 and the sunken step surface 21.

[0068] It should be noted that the forward displacement of the first execution block 9a, the third execution block 9c, and the fifth execution block 9e is shorter than that in "S2". After the first pin bending segment 6aa, the third pin bending segment 6cc, and the fifth pin bending segment 6ee are formed, the first execution block 9a, the third execution block 9c, and the fifth execution block 9e immediately stop moving forward. This ensures that the cutting edge 20 on the first execution block 9a, the third execution block 9c, and the fifth execution block 9e does not cut forward to the root of the newly formed first pin bending segment 6aa, the third pin bending segment 6cc, and the fifth pin bending segment 6ee before immediately retracting back to the initial position, thus preventing the newly formed first pin bending segment 6aa, the third pin bending segment 6cc, and the fifth pin bending segment 6ee from being cut off.

[0069] S4 (Detailed process of step four): The lifting device controls the lifting splicing plate 45 to rise to a predetermined height. The first pin 6a, the second pin 6b, the third pin 6c, the fourth pin 6d, and the fifth pin 6e adaptably shuttle through their respective pin shuttle channels 3, so that the lower ends of the second pin 6b and the fourth pin 6d have a portion of length L that is lower than the lower surface of the lifting splicing plate 45. Then, the second execution block 9b and the fourth execution block 9d corresponding to the second pin 6b and the fourth pin 6d are controlled to move forward until the vertical constraint surface 52 at the front end of the second execution block 9b and the fourth execution block 9d respectively pushes the lower end portion of length L of the second pin 6b and the fourth pin 6d forward and bends it vertically, thereby forming the second pin bending segment 6bb and the fourth pin bending segment 6dd. The formed second pin bending segment 6bb and the fourth pin bending segment 6dd are horizontally sandwiched between their respective b plates 8 and the sunken step surface 21.

[0070] It should be noted that the forward displacement of the second execution block 9b and the fourth execution block 9d is also shorter than that in "S2". After the second pin bending segment 6bb and the fourth pin bending segment 6dd are formed, the second execution block 9b and the fourth execution block 9d immediately stop moving forward. This ensures that the cutting edge 20 on the second execution block 9b and the fourth execution block 9d does not cut forward to the root of the newly formed second pin bending segment 6bb and the fourth pin bending segment 6dd before immediately retracting back to the initial position, thus preventing the newly formed second pin bending segment 6bb and the fourth pin bending segment 6dd from being cut off.

[0071] S5 (detailed process of step five): The lifting device controls the lifting splicing plate 45 to rise to the lower surface of the limit contact fixing plate 5; to avoid interference from subsequent movements, each actuator 9 is controlled to move backward with sufficient stroke; then the floating strip pusher 8 is controlled to move backward, and the floating strip pusher 8 simultaneously bends the first pin 6a, the second pin 6b, the third pin 6c, the fourth pin 6d, and the fifth pin 6e vertically backward with the lower end surface of the lifting splicing plate 45 as the bending point, so that the ends of the first pin bending segment 6aa, the second pin bending segment 6bb, the third pin bending segment 6cc, the fourth pin bending segment 6dd, and the fifth pin bending segment 6ee are all flipped to face downward vertically and are distributed in a trapezoidal dot matrix; Figure 7 As shown in the bottom diagram, this completes the process of converting the linear dot matrix pins of the circuit elements into trapezoidal dot matrix pins; then the floating strip pusher 8 returns to its initial position. The wide-faced design of the floating strip pusher 8 ensures that it can contact all pins simultaneously. As it moves backward, it acts on all pins at the same height at the exit point on the lower surface of plate 7, forcing all pins to bend a second time at that point (in the opposite direction to the first bend). Since the length L of the horizontal bending segment of each pin on side a is equal but the starting point differs in the front-to-back direction (determined by the bending positions in steps three and four), after this synchronous bending, these horizontal segments flip downward, and their ends naturally form a staggered trapezoidal distribution. This is the final and synchronous key action to achieve array conversion.

[0072] S6, the horizontal telescopic device 14 controls the b plate 8 to move away from the a plate 7, separating the b plate 8 and the a plate 7 to a sufficiently far distance from each other, so that the component 2 with the formed trapezoidal dot matrix pins can be smoothly removed outward by the robot arm. After separation, the pins are no longer constrained by the shuttle channel, and due to the trapezoidal distribution, there is no mutual interference between the pins, making it easy for the robot arm to hold the component body and safely remove it.

[0073] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A process for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins, characterized by: Step 1: The components (2) to be converted have a number of pins (6) arranged in a linear array along the array direction, including at least the first pin (6a), the second pin (6b), the third pin (6c), the fourth pin (6d), and the fifth pin (6e). Step 2: Trim the length of the ends of each pin (6) so that the second pin (6b) and the fourth pin (6d) are both L shorter than the first pin (6a), the third pin (6c) and the fifth pin (6e); Step 3: Bend the portions of the first pin (6a), the third pin (6c), and the fifth pin (6e) that extend beyond the second pin (6b) and the fourth pin (6d) vertically toward side a to form the first pin bent segment (6aa), the third pin bent segment (6cc), and the fifth pin bent segment (6ee). Step 4: Bend the ends a of the second pin (6b) and the fourth pin (6d) vertically to form the second pin bent segment (6bb) and the fourth pin bent segment (6dd). Step 5: Bend the first pin (6a), the second pin (6b), the third pin (6c), the fourth pin (6d), and the fifth pin (6e) at the same distance from the root of the pins, and bend them vertically towards side b. This will cause the ends of the bent segments (6aa), (6bb), (6cc), (6dd), and (6ee) of the first pin to be flipped to face downwards and to form a trapezoidal dot matrix distribution.

2. The process for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins according to claim 1, characterized in that: The lengths of the second pin bend (6bb) and the fourth pin bend (6dd) are L.

3. A device for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins, characterized in that: It includes a fixed plate (5) with a cutout of a limiting groove (4); it also includes a horizontal lifting splicing plate (45) that can move up and down. In the initial state, the upper end of the lifting splicing plate (45) is in contact with the lower end surface of the fixed plate (5). The lifting splicing plate (45) is composed of a plate (7) and a plate (8) horizontally spliced ​​together; the end of the a plate (7) away from the b plate (8) is fixed on a lifting seat (47) that can actively move up and down; the a plate (7) is connected to the b plate (8) through a horizontal telescopic device (14). When plate a (7) and plate b (8) are spliced ​​together, the splice joint of plate a (7) and plate b (8) forms several longitudinally penetrating pin shuttle channels (3) that are equidistantly arranged along the splice seam; from a top view, each pin shuttle channel (3) is within the range of the limiting groove (4). When the first pin (6a), second pin (6b), third pin (6c), fourth pin (6d) and fifth pin (6e) of the component to be converted (2) are inserted downward into their respective pin shuttle channels (3), the inner contour of the limiting groove (4) limits and supports the lower end face of the component to be converted (2); The lower side of the a plate (7) near the b plate (8) has a number of execution blocks (9) that slide together, and the number of execution blocks (9) corresponds one-to-one with the number of pin shuttle channels (3); The a plate (7) has several a guide rails (48) extending along the length direction on its lower side; each actuator (9) has an a slider (16) fixedly connected to the end away from the b plate (8) through a linkage arm (17); each a slider (16) is guided and fitted in the corresponding a guide rail (48). The upper surface of the execution block (9) is a sliding surface (51) that slides with the lower surface of plate a (7). The upper side of the execution block (9) away from the linkage arm (17) is provided with a recessed step surface (21) that is lower than the sliding surface (51). The corner of the recessed step surface (21) away from the linkage arm (17) forms a push-up rounded corner (22). The thickness of the gap between the recessed step surface (21) and the lower surface of plate a (7) is consistent with the thickness of each pin (6). The corner of the sliding surface (51) away from the linkage arm (17) is a cutting edge (20) of less than 90°. The end face of the execution block (9) away from the linkage arm (17) is a vertical constraint surface (52).

4. The apparatus for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins according to claim 3, characterized in that: A floating strip pusher (8) is provided on the side of several actuators (9) away from the linkage arm (17). The length direction of the floating strip pusher (8) is perpendicular to the extension direction of each a guide rail (48). The upper surface of the floating strip pusher (8) is at the same height as the sinking step surface (21) of each actuator (9). A b guide rail (48) parallel to the a guide rail (48) is fixedly installed inside the outer shell (1). A b slider (13) is provided in the b guide rail (48). The b slider (13) is fixedly connected to the floating strip pusher (8) through the synchronization arm (11).

5. The apparatus for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins according to claim 4, characterized in that: Several execution blocks (9) are respectively the first execution block (9a), the second execution block (9b), the third execution block (9c), the fourth execution block (9d) and the fifth execution block (9e); the first execution block (9a), the second execution block (9b), the third execution block (9c), the fourth execution block (9d) and the fifth execution block (9e) correspond one-to-one with the first pin (6a), the second pin (6b), the third pin (6c), the fourth pin (6d) and the fifth pin (6e) respectively.

6. The specific process of the device for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins according to claim 5, characterized in that: S1, insert the first pin (6a), second pin (6b), third pin (6c), fourth pin (6d) and fifth pin (6e) of the component (2) to be converted into their respective pin shuttle channels (3) on the lifting splicing plate (45) until the inner contour of the limiting groove (4) limits and supports the lower end face of the component (2) to be converted. At this time, the robot arm holds the body of the component (2). S2, trim the length of the ends of each pin (6) so that the second pin (6b) and the fourth pin (6d) are both L shorter than the first pin (6a), the third pin (6c) and the fifth pin (6e); the specific process of trimming the length of any pin (6) is as follows: The lifting device controls the lifting splicing plate (45) to descend to a predetermined height. At this time, the part of the target pin (6) that is lower than the splicing plate (45) is the segment to be cut (23). The execution block (9) corresponding to the target pin (6) is pushed forward until the vertical constraint surface (52) at the front end of the execution block (9) pushes the segment to be cut (23) forward, so that the segment to be cut (23) is bent forward vertically around the root, and the segment to be cut (23) after vertical bending is horizontally sandwiched between the b plate (8) and the sunken step surface (21). Then, the execution block (9) continues to move forward, causing the cutting edge (20) to move forward to cut the root of the segment to be cut (23). Subsequently, the cut segment to be cut (23) follows the execution block (9) to continue moving forward until the cut segment to be cut (23) moves forward to detach from the b plate (8) and automatically falls to this point under the action of gravity, thus ending the process of trimming the length of any pin (6).

7. The specific process of the device for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins according to claim 6, characterized in that: S3, control the lifting splicing plate (45) to rise to a predetermined height, the first pin (6a), the second pin (6b), the third pin (6c), the fourth pin (6d), and the fifth pin (6e) adaptably shuttle in their respective pin shuttle channels (3), so that the lower ends of the first pin (6a), the third pin (6c), and the fifth pin (6e) all have a portion of length L below the lower surface of the lifting splicing plate (45); then control the first execution block (9a), the third execution block (9b), and the third execution block (9c) corresponding to the first pin (6a), the third pin (6c), and the fifth pin (6e) to rise to a predetermined height, the first pin (6a), the second pin (6b), the third pin (6c), and the fifth pin (6e) to shuttle relatively adaptively in their respective pin shuttle channels (3), so that the lower ends of the first pin (6a), the third pin (6c), and the fifth pin (6e) all have a portion of length L below the lower surface of the lifting splicing plate (45); then control the first execution block (9a), the third execution block (9c), and the fifth execution block (9e) corresponding to the first pin (6a), the third pin (6c), and the fifth pin (6e) to shuttle relatively adaptively in their respective pin shuttle channels (3), so that the lower ends of ... The first execution block (9c) and the fifth execution block (9e) advance forward until the vertical constraint surface (52) at the front end of the first execution block (9a), the third execution block (9c) and the fifth execution block (9e) respectively bend the lower part of the first pin (6a), the third pin (6c) and the fifth pin (6e) with a length of L forward, so that the lower part of the first pin (6a), the third pin (6c) and the fifth pin (6e) with a length of L is bent forward vertically, thereby forming the first pin bending segment (6aa), the third pin bending segment (6cc) and the fifth pin bending segment (6ee); The formed first pin bending segment (6aa), the third pin bending segment (6cc) and the fifth pin bending segment (6ee) are horizontally sandwiched between their respective b plates (8) and the sunken step surface (21); The forward displacement of the first execution block (9a), the third execution block (9c), and the fifth execution block (9e) is shorter than that in "S2". After the first pin bending segment (6aa), the third pin bending segment (6cc), and the fifth pin bending segment (6ee) are formed, the first execution block (9a), the third execution block (9c), and the fifth execution block (9e) immediately stop moving forward. Before the cutting edge (20) on the first execution block (9a), the third execution block (9c), and the fifth execution block (9e) can cut forward to the root of the newly formed first pin bending segment (6aa), the third pin bending segment (6cc), and the fifth pin bending segment (6ee), the cutting edge (20) immediately retracts back to the initial position.

8. The specific process of the device for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins according to claim 7, characterized in that: S4, the lifting device controls the lifting splicing plate (45) to rise to a predetermined height, and the first pin (6a), second pin (6b), third pin (6c), fourth pin (6d) and fifth pin (6e) adaptably shuttle in their respective pin shuttle channels (3), so that the lower ends of the second pin (6b) and the fourth pin (6d) each have a portion of length L that is lower than the lower surface of the lifting splicing plate (45); then the second actuator (9b) and the fourth actuator (9d) corresponding to the second pin (6b) and the fourth pin (6d) are controlled to push forward. The vertical constraint surfaces (52) at the front ends of the second execution block (9b) and the fourth execution block (9d) push the lower part of the second pin (6b) and the fourth pin (6d) with a length of L forward, so that the lower part of the second pin (6b) and the fourth pin (6d) with a length of L bends forward vertically, thereby forming the second pin bending segment (6bb) and the fourth pin bending segment (6dd); the formed second pin bending segment (6bb) and the fourth pin bending segment (6dd) are horizontally sandwiched between their respective b plates (8) and the sunken step surface (21); The forward displacement of the second execution block (9b) and the fourth execution block (9d) is also shorter than that in "S2". After the second pin bending segment (6bb) and the fourth pin bending segment (6dd) are formed, the second execution block (9b) and the fourth execution block (9d) immediately stop moving forward, so that the cutting edge (20) on the second execution block (9b) and the fourth execution block (9d) immediately retracts back to the initial position before it cuts forward to the root of the newly formed second pin bending segment (6bb) and the fourth pin bending segment (6dd).

9. The specific process of the device for converting linear dot matrix pins of circuit elements into trapezoidal dot matrix pins according to claim 8, characterized in that: S5, the lifting device controls the lifting splicing plate (45) to rise to the lower surface of the limit contact fixing plate (5); controls each actuator (9) to move backward with sufficient stroke; Then, control the floating strip pusher (8) to move backward. Simultaneously, the floating strip pusher (8) will make the first pin (6a), the second pin (6b), the third pin (6c), the fourth pin (6d), and the fifth pin (6e) bend vertically backward at the height of the lower end face of the lifting splicing plate (45) as the bending point. This will cause the ends of the first pin bending segment (6aa), the second pin bending segment (6bb), the third pin bending segment (6cc), the fourth pin bending segment (6dd), and the fifth pin bending segment (6ee) to be flipped to face downward vertically and to form a trapezoidal dot matrix distribution. S6, the horizontal expansion joint (14) controls the b plate (8) to move away from the a plate (7), so that the b plate (8) and the a plate (7) are separated to a position far enough apart from each other.

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