An electrically controlled force pushing structure for the lead frame of a pick-and-place machine

Abstract

This utility model discloses an electrically controlled force-pushing structure for a chip mounter's feed lead frame, including a mounting bracket, a sliding seat, a voice coil motor, a first sensor, and a pushing component. The voice coil motor is mounted on the mounting bracket, the sliding seat is fixedly connected to the mover of the voice coil motor, and the pushing component is mounted on the sliding seat. When the resistance applied by the lead frame to the pushing component is greater than the constant force set by the voice coil motor, the mover moves relative to the stator in the opposite direction of pushing, thereby moving the sliding seat to the trigger position with the mover, triggering the first sensor. This utility model connects the voice coil motor, the first sensor, and the pushing component to the sliding seat, transmitting force to the voice coil motor through the sliding seat. When the resistance experienced by the pushing component is greater than the constant force set by the voice coil motor, the sliding seat moves with the mover to the trigger position, triggering the first sensor, thus achieving force detection. The constant force of the voice coil motor in this application is easy to set and can be displayed, overcoming the problems of existing spring-type structures.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor equipment technology, and in particular to an electrically controlled force pushing structure for a chip mounter lead frame. Background Technology

[0002] Semiconductor back-end packaging and placement operations require wafer mounters. The leadframe pusher, a key component of the transport track, is located behind the leadframe and pushes it out of the track and into the unloading hopper. During this operation, tilting of the unloading hopper or the unloading hopper grippers not reaching the expected position can cause a height difference between the track and the unloading hopper, or jamming at the track connection. This can easily lead to bending and deformation of the leadframe during push, and jamming increases the pushing force. Therefore, the leadframe pusher is usually equipped with a device to detect the pushing force to avoid these problems. However, most existing leadframe pusher structures use a combination of springs and slotted photoelectric sensors to detect changes in pushing force. This structure controls the detection force by adjusting the spring tension with a set screw, a cumbersome and unintuitive method that requires experimental verification. The detection force range is also limited by the spring material; for products of different thicknesses, springs may need to be replaced. Furthermore, there are no detailed numerical values ​​for the detection force, making it difficult to ensure consistency in the detection force applied by different operators to the same leadframe. Utility Model Content

[0003] This invention provides an electrically controlled force pushing structure for the feed lead frame of a chip mounter to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] An electrically controlled force pushing structure for a chip mounter lead frame includes: a mounting bracket, a sliding seat, a voice coil motor, a first sensor, and a pushing component; the voice coil motor is mounted on the mounting bracket, the sliding seat is fixedly connected to the mover of the voice coil motor, and the pushing component is mounted on the sliding seat; the resistance applied by the lead frame to the pushing component is greater than the constant force set by the voice coil motor, causing the mover to move relative to the stator in the opposite direction of pushing, thereby moving the sliding seat to the trigger position with the mover, causing the first sensor to trigger a signal.

[0006] Preferably, the first sensor includes a first photoelectric switch mounted on a mounting bracket and a first baffle mounted on a sliding base. The first baffle moves with the sliding base and triggers a signal after the first photoelectric switch is inserted.

[0007] Preferably, the sliding seat is slidably mounted on the mounting bracket via a guide assembly.

[0008] Preferably, a first spring is provided between the sliding seat and the mounting bracket. The first spring is arranged along the sliding direction of the sliding seat. When the sliding seat moves in the opposite direction of the pusher along with the mover of the voice coil motor, the first spring prevents the sliding seat from approaching the mounting bracket.

[0009] Preferably, the feeding component and the voice coil motor are located on both sides of the guide assembly, and the first sensor is located above the sliding seat.

[0010] Preferably, the pushing component includes: a support frame, a rotating frame, a driver, a detection frame, and a push plate; the support frame is fixed on the sliding seat, the rotating frame is rotatably connected to the support frame, the driver is located on the support frame, the driver drives the rotating frame to swing vertically, the detection frame is fixed on the rotating frame, and the push plate is fixed on the detection frame, the push plate swings downward with the rotating frame to push the lead frame.

[0011] Preferably, the support frame includes: a sliding connecting block, a rotating connecting block, a grooved connecting block, a sensing connecting block, and a cylinder connecting block;

[0012] The sliding connecting block and the sliding seat are detachably connected;

[0013] The rotating connecting block is fixed on the side of the sliding connecting block away from the sliding seat, and the rotating frame is rotatably connected to the rotating connecting block;

[0014] The grooved connecting block is fixed on the side of the sliding connecting block facing the opposite direction of the material pusher;

[0015] The sensing connection block is fixed at the end of the slotted connection block away from the sliding connection block;

[0016] The cylinder connecting block is fixed on the side of the sensing connecting block away from the sliding seat, and the driver is located on the cylinder connecting block.

[0017] Preferably, the rotating frame includes: a support connecting block, a drive push block, an extension block, a spring connecting block, and a second baffle; the support connecting block is rotatably connected to the side of the rotating connecting block away from the sliding connecting block, the drive push block is fixed to the side of the support connecting block away from the rotating connecting block, the extension block is fixed to the side of the support connecting block facing the opposite direction of pushing the material, the spring connecting block is fixed to the side of the extension block facing the sliding seat, and one end of the second baffle is fixed below the end of the spring connecting block away from the extension block, and the other end extends as a free end in the opposite direction of pushing the material;

[0018] The slotted connecting block has a rotation clearance groove, the extension block and the spring connecting block are located above the slotted connecting block, and the second baffle is located in the rotation clearance groove;

[0019] The sensing connecting block is fixed above the end of the slotted connecting block, and the spring connecting block extends between the sensing connecting block and the sliding connecting block.

[0020] The actuator includes a cylinder and a second spring. The cylinder is fixed on the cylinder connecting block, and the cylinder rod head abuts against the drive push block. The spring connecting block has a spring mounting blind hole on the side facing the rotating connecting block, and the rotating connecting block has a spring mounting hole on the side facing the spring connecting block. The two ends of the second spring are respectively inserted into the spring mounting blind hole and the spring mounting hole. When the cylinder pushes the drive push block and causes the support connecting block to swing, the second spring has the tendency to resist the swing of the support connecting block.

[0021] Preferably, the pushing component further includes a second sensor, which is fixed on the sensing connecting block; when the cylinder drives the supporting connecting block to swing, the second baffle swings with the supporting connecting block, causing the second sensor to trigger a signal.

[0022] Preferably, the testing frame is provided with an adjustment slot, and the push plate is provided with a positioning boss. The positioning boss is inserted into and cooperates with the adjustment slot. The adjustment slot is provided with an adjustment threaded hole, and the push plate is provided with an elongated hole that extends through to the positioning boss. The push plate is fixed by screwing screws into the adjustment threaded hole.

[0023] Beneficial effects:

[0024] This application discloses an electrically controlled force pushing structure for a chip mounter's feeder lead frame. By connecting a voice coil motor, a first sensor, and a pushing component to a sliding seat, the force is transmitted to the voice coil motor through the sliding seat. When the resistance applied by the lead frame to the pushing component exceeds the constant force set by the voice coil motor, the sliding seat moves in the opposite direction of the pushing along with the mover of the voice coil motor, triggering a signal from the first sensor, thereby enabling force detection. The constant force of the voice coil motor in this application is easy to set and can be displayed, overcoming the problems of existing spring-type structures. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This utility model discloses a schematic diagram of an electrically controlled force pushing structure for a chip mounter lead frame. Figure 1 ;

[0027] Figure 2 This utility model discloses a schematic diagram of an electrically controlled force pushing structure for a chip mounter lead frame. Figure 2 ;

[0028] Figure 3This is a top view of an electrically controlled force pushing structure for a chip mounter feeder lead frame disclosed in this utility model;

[0029] Figure 4 This utility model discloses a structural diagram of a mounting frame, voice coil motor, and guide assembly assembly for an electrically controlled force pushing structure of a chip mounter lead frame.

[0030] Figure 5 This utility model discloses a schematic diagram of the mounting bracket for an electrically controlled force pushing structure of a chip mounter lead frame. Figure 1 ;

[0031] Figure 6 This utility model discloses a schematic diagram of the mounting bracket for an electrically controlled force pushing structure of a chip mounter lead frame. Figure 2 ;

[0032] Figure 7 This utility model discloses a schematic diagram of the sliding seat of an electrically controlled force pushing structure for a chip mounter lead frame;

[0033] Figure 8 This utility model discloses a schematic diagram of the pusher component of an electrically controlled force pusher structure for a chip mounter lead frame. Figure 1 ;

[0034] Figure 9 This utility model discloses a schematic diagram of the pusher component of an electrically controlled force pusher structure for a chip mounter lead frame. Figure 2 ;

[0035] Figure 10 This is a front view of the pusher component of an electrically controlled force pusher structure for a chip mounter lead frame disclosed in this utility model.

[0036] Figure 11 This is a top view of the pusher component of an electrically controlled force pusher structure for a chip mounter lead frame disclosed in this utility model.

[0037] Figure 12 for Figure 9 A schematic diagram of the C-direction;

[0038] Figure 13 for Figure 11 Sectional view of AA;

[0039] Figure 14 for Figure 11 Sectional view of BB;

[0040] Figure 15 This utility model discloses a structural schematic diagram of the support frame for an electrically controlled force pushing structure of a chip mounter lead frame;

[0041] Figure 16 This utility model discloses a schematic diagram of the rotating frame of an electrically controlled force-pushing structure for a chip mounter lead frame. Figure 1 ;

[0042] Figure 17 This utility model discloses a schematic diagram of the rotating frame of an electrically controlled force-pushing structure for a chip mounter lead frame. Figure 2 ;

[0043] Figure 18 This utility model discloses a structural schematic diagram of a detection frame for an electrically controlled force pushing structure of a chip mounter lead frame;

[0044] Figure 19 This utility model discloses a schematic diagram of the pusher plate of an electrically controlled force pusher structure for a chip mounter lead frame. Figure 1 ;

[0045] Figure 20 This utility model discloses a schematic diagram of the pusher plate of an electrically controlled force pusher structure for a chip mounter lead frame. Figure 2 ;

[0046] Figure 21 This is a partial schematic diagram of the electrically controlled force pushing structure of the chip mounter feeder lead frame disclosed in this utility model, installed on the track transport gripper assembly in the non-pushing state.

[0047] Figure 22 This is a schematic diagram of the electrically controlled force pushing structure of the chip mounter feeder lead frame, as disclosed in this utility model, installed on the track transport gripper assembly in the pushing state.

[0048] Figure 23 for Figure 22 A magnified view of part I.

[0049] In the diagram: 1. Mounting bracket; 11. Mounting bracket base; 111. Motor connection opening; 12. Mounting bracket connecting plate; 121. Sensor mounting end; 122. Pushing structure mounting end; 2. Sliding seat; 3. Voice coil motor; 4. First sensor; 41. First photoelectric switch; 42. First baffle; 5. Pushing component; 51. Support frame; 511. Sliding connecting block; 512. Rotating connecting block; 5121. Spring mounting hole; 513. Grooved connecting block; 5131. Rotation clearance groove; 514. Sensor connection. 515. Cylinder connecting block; 52. Rotating frame; 521. Support connecting block; 522. Drive push block; 523. Extension block; 524. Spring connecting block; 5241. Spring mounting blind hole; 525. Second baffle; 531. Cylinder; 532. Second spring; 54. Detection frame; 541. Adjustment through slot; 542. Adjustment threaded hole; 55. Push plate; 551. Positioning boss; 552. Long strip hole; 56. Second sensor; 6. Guide assembly; 7. First spring; 8. Track transport gripper assembly. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0051] An electrically controlled force pushing structure for the feed lead frame of a pick-and-place machine, combined with Figures 1-23 As shown, it includes: a mounting frame 1, a sliding seat 2, a voice coil motor 3, a first sensor 4, and a pushing component 5; the voice coil motor 3 is mounted on the mounting frame 1, the sliding seat 2 is fixedly connected to the mover of the voice coil motor 3, and the pushing component 5 is mounted on the sliding seat 2; when the resistance applied by the lead frame to the pushing component 5 is greater than the constant force set by the voice coil motor 3, the mover of the voice coil motor 3 moves relative to the stator in the opposite direction of pushing, thereby the sliding seat 2 moves with the mover of the voice coil motor 3 in the opposite direction of pushing to the trigger position, so that the first sensor 4 triggers a signal.

[0052] This application mounts the stator of the voice coil motor 3 on the mounting bracket 1, connects the sliding seat 2 to the moving part, and the moving part moves relative to the stator, thereby driving the sliding seat 2 to move. The pushing component 5 is set on the sliding seat 2, and the force is transmitted to the voice coil motor 3 through the sliding seat 2. By selecting the torque mode of the voice coil motor 3 and inputting the set current value, the moving part of the voice coil motor 3 will maintain a constant force at the set position (the magnitude of the force is related to the current value, and the voice coil motor 3 has a specific calculation formula). When the resistance of the pushing component 5 is greater than the constant force set by the voice coil motor 3, the sliding seat 2 moves in the opposite direction of the pushing along with the moving part of the voice coil motor 3, triggering the first sensor 4 to send a signal. The voice coil motor 3 will then alarm, and the first sensor 4 will upload a signal to the controller for subsequent control, thereby realizing the detection of the pushing force. Compared to existing lead frame push structures: This application allows for convenient setting of current values ​​without complex debugging and testing; the voice coil motor 3 of this application can intuitively display values ​​through a display output device, facilitating parameterized management and direct observation of the detection force, ensuring consistency between operation and equipment; the voice coil motor 3 of this application can control the force by adjusting the current value, resulting in a wider detection force range, and eliminating the need for replacement for products of different thicknesses.

[0053] Preferably, the first sensor 4 includes a first photoelectric switch 41 mounted on the mounting bracket 1 and a first baffle 42 mounted on the sliding seat 2. The first baffle 42 moves with the sliding seat 2, and a trigger signal is generated after the first photoelectric switch 41 is inserted. It is understood that the first sensor 4 can also be an electromagnetic sensor or a laser sensor. The distance between the first baffle 42 and the first sensor 4 is obtained by displacement measurement, so that the sliding seat 2 moves a specific displacement to reach the trigger position, thereby generating a trigger signal.

[0054] Specifically, the mounting frame 1 includes a mounting frame base 11 and a mounting frame connecting plate 12. The mounting frame base 11 has a motor connection opening 111, and a voice coil motor 3 is located at the motor connection opening 111. The stator of the voice coil motor 3 is fixed to the mounting frame base 11 by screws. The mounting frame connecting plate 12 is fixed to the side of the mounting frame base 11 facing the opposite direction of the material pushing direction by screws. The mounting frame connecting plate 12 has a sensor mounting end 121 corresponding to the sliding seat 2 and a material pushing structure mounting end 122 extending from the mounting frame base 11. The material pushing structure mounting end 122 is used to connect to the track transport gripper assembly 8. In this embodiment, the material pushing structure mounting end 122 is screwed to the track transport gripper assembly 8. The first baffle 42 is fixed to the upper surface of the sliding seat 2 by screws, and the first photoelectric switch 41 is fixed to the upper surface of the sensor mounting end 121 by screws.

[0055] Preferably, the sliding seat 2 is slidably mounted on the mounting frame 1 via the guide component 6, which precisely limits the movement direction of the sliding seat 2. At the same time, the guide component 6 supports the sliding seat 2, improves the structural rigidity, facilitates a larger force detection range, and is compatible with more types of lead frames.

[0056] Specifically, the guide assembly 6 adopts a ball bearing sliding guide rail, which is fixed to one side of the motor connection opening 111 on the mounting base 11 by screw connection. One side of the sliding seat 2 is connected to the moving part screw of the voice coil motor 3, and the other side is connected to the support frame 51 of the pusher component 5 by screw connection.

[0057] Preferably, a first spring 7 is provided between the sliding seat 2 and the mounting frame 1. The first spring 7 is arranged along the sliding direction of the sliding seat 2. When the sliding seat 2 moves in the opposite direction of the pusher along with the mover of the voice coil motor 3, the first spring 7 prevents the sliding seat 2 from approaching the mounting frame 1 and buffers the sliding of the sliding seat 2; at the same time, it ensures the stability of the ball sliding guide rail during the conveying process and avoids false alarms.

[0058] Specifically, the sliding seat 2 has a blind hole on the side facing the sensor mounting end 121, and the sensor mounting end 121 also has a blind hole on the side facing the sliding seat 2. The two ends of the first spring 7 are respectively inserted into the two blind holes. When the sliding seat 2 moves in the opposite direction of the pusher, the sliding seat 2 approaches the mounting bracket connecting plate 12, thereby compressing the first spring 7.

[0059] Preferably, the pusher component 5 and the voice coil motor 3 are located on both sides of the guide assembly 6, and the first sensor 4 is located above the sliding seat 2, making the structural layout more reasonable and compact.

[0060] Preferably, the pushing component 5 includes: a support frame 51, a rotating frame 52, a driver, a detection frame 54, and a push plate 55; the support frame 51 is fixed on the sliding seat 2, the rotating frame 52 is rotatably connected to the support frame 51, the driver is located on the support frame 51, the driver drives the rotating frame 52 to swing vertically, the detection frame 54 is fixed on the rotating frame 52, and the push plate 55 is fixed on the detection frame 54. The push plate 55 is used to push the lead frame as the rotating frame 52 swings downward.

[0061] Preferably, the support frame 51 includes: a sliding connecting block 511, a rotating connecting block 512, a grooved connecting block 513, a sensing connecting block 514, and a cylinder connecting block 515;

[0062] The sliding connecting block 511 and the sliding seat 2 are detachably connected by screws;

[0063] The rotating connecting block 512 is fixed on the side of the sliding connecting block 511 away from the sliding seat 2, and the rotating frame 52 is rotatably connected to the rotating connecting block 512;

[0064] The grooved connecting block 513 is fixed on the side of the sliding connecting block 511 facing the opposite direction of the material pusher;

[0065] The sensor connection block 514 is fixed at the end of the grooved connection block 513 away from the sliding connection block 511;

[0066] The cylinder connecting block 515 is fixed on the side of the sensor connecting block 514 away from the sliding seat 2, and the driver is mounted on the cylinder connecting block 515. The structure of the support frame 51 enables the installation of the sliding seat 2, the rotating frame 52, and the driver.

[0067] Specifically, the sliding connecting block 511, the rotating connecting block 512, the grooved connecting block 513, the sensing connecting block 514, and the cylinder connecting block 515 are integrally formed. The side of the rotating connecting block 512 is flush with the side of the sliding connecting block 511 facing the sensing connecting block 514. The end of the grooved connecting block 513 is fixed on the plane that is flush with the rotating connecting block 512 and the sliding connecting block 511.

[0068] Preferably, the rotating frame 52 includes: a support connecting block 521, a drive push block 522, an extension block 523, a spring connecting block 524, and a second baffle 525; the support connecting block 521 is rotatably connected to the side of the rotating connecting block 512 away from the sliding connecting block 511, the drive push block 522 is fixedly disposed on the side of the support connecting block 521 away from the rotating connecting block 512, the extension block 523 is fixedly disposed on the side of the support connecting block 521 facing the opposite direction of the push, the spring connecting block 524 is fixedly disposed on the side of the extension block 523 facing the sliding seat 2, and one end of the second baffle 525 is fixedly disposed below the end of the spring connecting block 524 away from the extension block 523, and the other end extends in the opposite direction of the push as a free end;

[0069] The slotted connecting block 513 has a rotation clearance groove 5131, the extension block 523 and the spring connecting block 524 are located above the slotted connecting block 513, and the second baffle 525 is located in the rotation clearance groove 5131.

[0070] The sensing connection block 514 is fixed above the end of the slotted connection block 513, and the spring connection block 524 extends between the sensing connection block 514 and the sliding connection block 511.

[0071] The actuator includes a cylinder 531 and a second spring 532. The cylinder 531 is fixed on the cylinder connecting block 515. The cylinder rod head of the cylinder 531 abuts against the drive push block 522. After the cylinder rod of the cylinder 531 extends, its cylinder rod head abuts against the drive push block 522 and can slide along the contact surface, thereby realizing that the cylinder 531 pushes the support connecting block 521 to rotate. The spring connecting block 524 has a spring mounting blind hole 5241 on the side facing the rotating connecting block 512, and the rotating connecting block 512 has a spring mounting hole 5121 on the side facing the spring connecting block 524. The two ends of the second spring 532 are respectively inserted into the spring mounting blind hole 5241 and the spring mounting hole 5121. When the cylinder 531 pushes the drive push block 522 and causes the support connecting block 521 to swing, the second spring 532 has the tendency to resist the swing of the support connecting block 521. In this embodiment, cylinder 531 is a needle cylinder. It is understood that hydraulic cylinders, linear motors, and linear electric cylinders can also be used.

[0072] The structure of the support frame 51 and the rotating frame 52 in this application can take into account the functions of rotation, signal triggering, cylinder pushing and spring reset.

[0073] Specifically, the lower part of the support connecting block 521 and the lower part of the rotating connecting block 512 have through holes. The support connecting block 521 is rotatably connected to the rotating connecting block 512 via a rotating shaft and a flange bearing. The rotating shaft is fixed and prevented from rotating by a set screw. The detection frame 54 is fixed to the front side of the support connecting block 521 by screws. Due to its compact structure and ease of operation, the spring mounting hole 5121 is a through hole with a screw plug, which allows for easy installation of the second spring 532.

[0074] Preferably, the feeding component 5 further includes a second sensor 56, which is fixed to the sensing connection block 514 by screws, with its detection end facing the slotted connection block 513; when the cylinder 531 drives the support connection block 521 to swing, the second baffle 525 rotates with the support connection block 521, causing the second sensor 56 to trigger a signal.

[0075] Preferably, the detection frame 54 is provided with an adjustment slot 541, and the push plate 55 is provided with a positioning boss 551. The positioning boss 551 is inserted into and cooperates with the adjustment slot 541. The adjustment slot 541 is provided with an adjustment threaded hole 542, and the push plate 55 is provided with an elongated hole 552 that extends through to the positioning boss 551. The push plate 55 is fixed by screwing screws into the adjustment threaded hole 542. The positioning boss 551 cooperates with the width of the adjustment slot 541 to facilitate the positioning of the push plate 55; and the position of the push plate 55 in the adjustment slot 541 can be adjusted by the cooperation of the elongated hole 552 and the screws.

[0076] The working principle of the device in this application is as follows:

[0077] The track-carrying gripper assembly 8 transports the lead frame to the working position, and the pushing structure pushes the lead frame out of the track and into the unloading box. At this point, the position is as follows: Figure 21 As shown. The cylinder 531, controlled by a solenoid valve, pushes forward, driving the pusher block 522 to swing the support connecting block 521 downwards, thereby causing the detection frame 54 and the pusher plate 55 to rotate into the pushing state, as shown. Figure 22 and 23 As shown. The second sensor 56 and the second baffle 525 detect whether the pusher 55 has descended, reaching... Figure 22 After positioning, the track transport gripper assembly 8 drives the pushing structure to push the material. When a jam occurs, the force required to push the lead frame increases, exceeding the set force of the voice coil motor 3, forcing the voice coil motor 3 to deactivate. The sliding seat 2 then drives the first baffle 42 to move backward, blocking the first photoelectric switch 41, thus achieving an alarm function.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An electrically controlled force-pushing structure for a chip mounter lead frame, characterized in that, include: The components include a mounting frame (1), a sliding seat (2), a voice coil motor (3), a first sensor (4), and a pusher component (5). The voice coil motor (3) is mounted on the mounting frame (1), the sliding seat (2) is fixedly connected to the mover of the voice coil motor (3), and the pusher component (5) is mounted on the sliding seat (2). The resistance applied by the lead frame to the pusher component (5) is greater than the constant force set by the voice coil motor (3), causing the mover of the voice coil motor (3) to move relative to the stator in the opposite direction of the pusher. As a result, the sliding seat (2) moves with the mover of the voice coil motor (3) to the trigger position, causing the first sensor (4) to trigger a signal.

2. The electrically controlled force pushing structure of the chip mounter lead frame according to claim 1, characterized in that, The first sensor (4) includes a first photoelectric switch (41) mounted on the mounting bracket (1) and a first baffle (42) mounted on the sliding seat (2). The first baffle (42) moves with the sliding seat (2) and triggers a signal after being inserted into the first photoelectric switch (41).

3. The electrically controlled force pushing structure of the chip mounter lead frame according to claim 1 or 2, characterized in that, The sliding seat (2) is slidably mounted on the mounting bracket (1) via the guide assembly (6).

4. The electrically controlled force pushing structure of the chip mounter lead frame according to claim 3, characterized in that, A first spring (7) is provided between the sliding seat (2) and the mounting frame (1). The first spring (7) is set along the sliding direction of the sliding seat (2). When the sliding seat (2) moves in the opposite direction of the pusher along with the mover of the voice coil motor (3), the first spring (7) prevents the sliding seat (2) from approaching the mounting frame (1).

5. The electrically controlled force pushing structure for the feed lead frame of a chip mounter according to claim 4, characterized in that, The pusher component (5) and the voice coil motor (3) are located on both sides of the guide assembly (6), and the first sensor (4) is located above the sliding seat (2).

6. The electrically controlled force pushing structure of the chip mounter lead frame according to claim 1, characterized in that, The pushing component (5) includes: a support frame (51), a rotating frame (52), a driver, a detection frame (54), and a push plate (55); the support frame (51) is fixed on the sliding seat (2), the rotating frame (52) is rotatably connected to the support frame (51), the driver is located on the support frame (51), the driver drives the rotating frame (52) to swing vertically, the detection frame (54) is fixed on the rotating frame (52), and the push plate (55) is fixed on the detection frame (54). The push plate (55) swings downward with the rotating frame (52) to push the lead frame.

7. The electrically controlled force pushing structure for the feed lead frame of a chip mounter according to claim 6, characterized in that, The support frame (51) includes: a sliding connecting block (511), a rotating connecting block (512), a grooved connecting block (513), a sensing connecting block (514), and a cylinder connecting block (515). The sliding connecting block (511) is detachably connected to the sliding seat (2); The rotating connecting block (512) is fixed on the side of the sliding connecting block (511) away from the sliding seat (2), and the rotating frame (52) is rotatably connected to the rotating connecting block (512); The grooved connecting block (513) is fixed on the side of the sliding connecting block (511) facing the opposite direction of the material push; The sensing connection block (514) is fixed at one end of the grooved connection block (513) away from the sliding connection block (511); The cylinder connecting block (515) is fixed on the side of the sensing connecting block (514) away from the sliding seat (2), and the driver is located on the cylinder connecting block (515).

8. The electrically controlled force pushing structure of the chip mounter lead frame according to claim 7, characterized in that, The rotating frame (52) includes: a support connecting block (521), a drive push block (522), an extension block (523), a spring connecting block (524), and a second baffle (525); the support connecting block (521) is rotatably connected to the side of the rotating connecting block (512) away from the sliding connecting block (511), the drive push block (522) is fixed on the side of the support connecting block (521) away from the rotating connecting block (512), the extension block (523) is fixed on the side of the support connecting block (521) facing the opposite direction of the material push, the spring connecting block (524) is fixed on the side of the extension block (523) facing the sliding seat (2), and one end of the second baffle (525) is fixed below the end of the spring connecting block (524) away from the extension block (523), and the other end extends in the opposite direction of the material push as a free end; The grooved connecting block (513) has a rotation clearance groove (5131), the extension block (523) and the spring connecting block (524) are located above the grooved connecting block (513), and the second baffle (525) is located in the rotation clearance groove (5131). The sensing connection block (514) is fixed above the end of the slotted connection block (513), and the spring connection block (524) extends between the sensing connection block (514) and the sliding connection block (511). The actuator includes a cylinder (531) and a second spring (532). The cylinder (531) is fixed on the cylinder connecting block (515), and the cylinder rod head of the cylinder (531) abuts against the drive push block (522). The spring connecting block (524) has a spring mounting blind hole (5241) on the side facing the rotating connecting block (512), and the rotating connecting block (512) has a spring mounting hole (5121) on the side facing the spring connecting block (524). The two ends of the second spring (532) are respectively inserted into the spring mounting blind hole (5241) and the spring mounting hole (5121). When the cylinder (531) pushes the drive push block (522) and causes the support connecting block (521) to swing, the second spring (532) has a tendency to resist the swing of the support connecting block (521).

9. The electrically controlled force pushing structure of the chip mounter lead frame according to claim 8, characterized in that, The pushing component (5) also includes a second sensor (56), which is fixed on the sensing connection block (514). When the cylinder (531) drives the support connection block (521) to swing, the second baffle (525) swings with the support connection block (521) and triggers the second sensor (56) to a signal.

10. The electrically controlled force pushing structure for the feed lead frame of a chip mounter according to any one of claims 6-9, characterized in that, The testing frame (54) is provided with an adjustment slot (541), and the push plate (55) is provided with a positioning boss (551). The positioning boss (551) is inserted into and cooperates with the adjustment slot (541). The adjustment slot (541) is provided with an adjustment threaded hole (542), and the push plate (55) is provided with an elongated hole (552) that extends through to the positioning boss (551). The push plate (55) is fixed by screwing screws into the adjustment threaded hole (542).

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