Bonding apparatus

Abstract

The application belongs to the technical field of semiconductor packaging and relates to a wire bonding and pressing device, which comprises oppositely arranged a carrier plate and a pressing plate, a carrier plate driving mechanism for driving the carrier plate to move and a pressing plate driving mechanism for driving the pressing plate to move, the carrier plate and the pressing plate move oppositely to realize the pressing of the wire bonding; the carrier plate driving mechanism comprises a first driving assembly and a carrier plate connecting assembly, the first driving assembly is provided with a first cam, one end of the carrier plate connecting assembly is in abutment with the outer profile surface of the first cam, and the other end is connected with the carrier plate; the pressing plate driving mechanism comprises a second driving assembly and a pressing plate connecting assembly, the second driving assembly is provided with a second cam, one end of the pressing plate connecting assembly is in abutment with the outer profile surface of the second cam, and the other end is connected with the pressing plate. The technical scheme provided by the application can improve the adaptation range and pressing efficiency of the wire bonding and pressing device.

Description

Technical Field

[0001] This application relates to the field of semiconductor packaging technology, and more specifically, to a wire bonding apparatus. Background Technology

[0002] Wire bonding crimping devices achieve welding by creating pressure deformation on the wire through relative movement between the pressure plate and the carrier plate. Existing wire bonding crimping devices typically use a fixed carrier plate, and apply pressure to the wire by moving the pressure plate. Processing wires of different specifications requires changing the corresponding wire bonding crimping device, which is complicated to operate and has low crimping efficiency. Utility Model Content

[0003] The technical problem to be solved by the embodiments of this application is that the existing wire bonding pressing device has poor adaptability and low pressing efficiency.

[0004] To address the aforementioned technical problems, this application provides a wire bonding device, which employs the following technical solution:

[0005] A wire bonding device includes a carrier plate and a pressure plate disposed opposite to each other, a carrier plate driving mechanism for driving the carrier plate to move and a pressure plate driving mechanism for driving the pressure plate to move, wherein the carrier plate and the pressure plate move relative to each other to achieve wire bonding;

[0006] The carrier plate driving mechanism includes a first driving component and a carrier plate connecting component. The first driving component is provided with a first cam. One end of the carrier plate connecting component abuts against the outer contour surface of the first cam, and the other end is connected to the carrier plate. The first driving component drives the first cam to rotate, so that the carrier plate connecting component drives the carrier plate to move.

[0007] The pressure plate driving mechanism includes a second driving component and a pressure plate connecting component. The second driving component is provided with a second cam. One end of the pressure plate connecting component abuts against the outer contour surface of the second cam, and the other end is connected to the pressure plate. The second driving component drives the second cam to rotate, so that the pressure plate connecting component drives the pressure plate to move.

[0008] Furthermore, the first cam and the second cam are disc cams; wherein the disc cam includes an elliptical semicircular portion, a short semicircular portion, and a linear region connecting the elliptical semicircular portion and the short semicircular portion.

[0009] Furthermore, the wire bonding device also includes a base, and both the carrier plate driving mechanism and the pressure plate driving mechanism are mounted on the base.

[0010] Furthermore, the first drive assembly includes a first drive motor and a first rotating shaft. The first drive motor is mounted on the base, the first rotating shaft is mounted on the drive end of the first drive motor, and the first cam is sleeved on the first rotating shaft.

[0011] The carrier plate connecting assembly includes a first connector and a first bearing. The first connector is movably mounted on the base, and the first bearing is disposed on the first connector, and the first bearing rotates against the first cam. The carrier plate is disposed on the top of the first connector.

[0012] Furthermore, the carrier plate connection assembly also includes at least one reset member, one end of which is connected to the base and the other end of which is connected to the first connector. The reset member is used to keep the first bearing and the first cam rotating against each other.

[0013] Furthermore, the first drive assembly also includes a first encoder, which is mounted on the base and is used to detect the rotation angle of the first cam.

[0014] Furthermore, the second drive assembly includes a second drive motor and a transmission assembly. The second drive motor is mounted on the base, and one end of the transmission assembly is connected to the drive end of the second drive motor, while the other end is connected to the second cam.

[0015] The pressure plate connecting assembly includes a second connector, a second bearing, and an elastic element. The second connector is movably mounted on the base. The second bearing is mounted on the second connector and is located below the second cam. The second bearing and the second cam rotate against each other. The pressure plate is mounted on the top of the second connector. The elastic element connects the second connector and the base and is used to keep the second bearing and the second cam rotating against each other.

[0016] Furthermore, the transmission assembly includes a second rotating shaft, a synchronous pulley, and a synchronous belt; the second rotating shaft passes through the carrier plate connecting mechanism, and the synchronous pulley and the second cam are disposed at opposite ends of the second rotating shaft; the synchronous belt is connected between the synchronous pulley and the drive end of the second drive motor.

[0017] Furthermore, the second drive assembly also includes a second encoder mounted on the base, the second encoder being used to detect the rotation angle of the second cam.

[0018] Furthermore, the base is provided with a sliding groove; the second connecting member includes a sliding seat, a base, a first support seat and a second support seat, the sliding seat is slidably mounted in the sliding groove, the base is disposed on the top of the sliding seat, and the first support seat and the second support seat are disposed on opposite sides of the base;

[0019] The pressure plate connecting assembly further includes a first clamp and a second clamp, one of which is mounted on the first support base and the other is mounted on the second support base. The first clamp and the second clamp cooperate to clamp the opposite side of the pressure plate.

[0020] Compared with the prior art, the embodiments of this application have the following main advantages:

[0021] The wire bonding device provided in this application controls the movement of the carrier plate and the pressure plate separately to adapt to wires of different sizes and improve the adaptability of the wire bonding device. At the same time, the movement of the carrier plate and the pressure plate is indirectly controlled by the cooperation of the first cam and the carrier plate connecting assembly and the second cam and the pressure plate connecting assembly, so as to adjust the bonding parameters according to the rotation angle of the first cam and the second cam and improve the bonding efficiency of the wire bonding device. Attached Figure Description

[0022] To more clearly illustrate the solution of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the wire bonding device according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the wire bonding apparatus according to an embodiment of this application from another direction;

[0025] Figure 3 This is a cross-sectional schematic diagram of the wire bonding apparatus according to an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of the engagement between the first cam and the first bearing according to an embodiment of this application;

[0027] Figure 5 This is a schematic diagram of the cooperation between the second cam and the second bearing in an embodiment of this application.

[0028] Figure label:

[0029] 1. Base; 2. Carrier plate drive mechanism; 21. First drive assembly; 211. First cam; 212. First drive motor; 213. First rotating shaft; 214. First encoder; 22. Carrier plate connecting assembly; 221. First connector; 222. First bearing; 223. Reset component; 3. Carrier plate; 4. Pressure plate drive mechanism; 41. Second drive assembly; 411. Second cam; 412. Second drive motor; 413. Transmission assembly; 4131. Second rotating shaft; 4132. Synchronous pulley; 4133. Synchronous belt; 414. Second encoder; 42. Pressure plate connecting assembly; 421. Second connector; 4211. Sliding seat; 4212. Base; 4213. First support seat; 4214. Second support seat; 422. Second bearing; 423. Elastic component; 424. First gripper; 425. Second gripper; 5. Pressure plate. Detailed Implementation

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0031] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] Wire bonding crimping devices achieve welding by creating pressure deformation on the wire through relative movement between the pressure plate and the carrier plate. Existing wire bonding crimping devices typically use a fixed carrier plate, and apply pressure to the wire by moving the pressure plate. Processing wires of different specifications requires changing the corresponding wire bonding crimping device, which is complicated to operate and has low crimping efficiency.

[0033] In addition, existing wire bonding devices typically use the elastic deformation of a tension spring to pull the pressure plate downwards to provide the pressing force. Since different specifications of wire bonding require different pressing forces, it is inconvenient to adjust the pressing force using a tension spring, thus resulting in poor applicability.

[0034] Based on the background technology described above, this application provides a wire bonding apparatus.

[0035] Please see Figure 1 , Figure 2 As shown, the wire bonding device provided in this application embodiment includes a carrier plate 3 and a pressure plate 5 arranged opposite to each other, a carrier plate driving mechanism 2 for driving the carrier plate 3 to move and a pressure plate driving mechanism 4 for driving the pressure plate 5 to move. The carrier plate 3 and the pressure plate 5 move relative to each other to realize the bonding of the wire. In this embodiment, the carrier plate 3 is used to carry the wire and the pressure plate 5 is used to apply pressure to the wire.

[0036] In some embodiments, the wire bonding device further includes a base 1, and the carrier plate driving mechanism 2 and the pressure plate driving mechanism 4 are both mounted on the base 1. In this embodiment, the carrier plate driving mechanism 2 is used to drive the carrier plate 3 to move on the top of the base 1 to adapt to different specifications of bonding wires; the pressure plate driving mechanism 4 is used to drive the pressure plate 5 to move above the carrier plate 3 to apply pressure to the bonding wires carried on the carrier plate 3 to achieve wire bonding.

[0037] In some embodiments, the carrier plate driving mechanism 2 includes a first driving component 21 and a carrier plate connecting component 22. In this embodiment, the first driving component 21 is provided with a first cam 211. One end of the carrier plate connecting component 22 abuts against the outer contour surface of the first cam 211, and the other end is connected to the carrier plate 3. The first driving component 21 drives the first cam 211 to rotate, so that the carrier plate connecting component 22 drives the carrier plate 3 to move.

[0038] In some embodiments, the pressure plate driving mechanism 4 includes a second driving component 41 and a pressure plate connecting component 42. The second driving component 41 is provided with a second cam 411. One end of the pressure plate connecting component 42 abuts against the outer contour surface of the second cam 411, and the other end is connected to the pressure plate 5. The second driving component 41 drives the second cam 411 to rotate, so that the pressure plate connecting component 42 drives the pressure plate 5 to move.

[0039] In this embodiment, when the wire bonding device is started, the position of the carrier plate 3 is first adjusted by the carrier plate driving mechanism 2 to accommodate wires of different specifications. Then, the pressure plate driving mechanism 4 controls the pressure plate 5 to approach the carrier plate 3 and apply pressure to the wire, thereby achieving wire bonding.

[0040] The wire bonding device provided in this application embodiment controls the movement of the carrier plate 3 and the pressure plate 5 respectively to adapt to different sizes of wire bonding wires and improve the adaptability range of the wire bonding device. At the same time, the movement of the carrier plate 3 and the pressure plate 5 is indirectly controlled by the cooperation of the first cam 211 with the carrier plate connecting assembly 22 and the cooperation of the second cam 411 with the pressure plate connecting assembly 42, so as to adjust the bonding parameters according to the rotation angle of the first cam 211 and the second cam 411 and improve the bonding efficiency of the wire bonding device.

[0041] Please see Figure 4 , Figure 5 As shown, in some embodiments, the first cam 211 and the second cam 411 are both disc cams; wherein, the disc cam includes an elliptical semicircular portion 211a (411a), a short semicircular portion 211c (411c), and a linear region 211b (411b) connecting the elliptical semicircular portion and the short semicircular portion.

[0042] In this embodiment, the linear region 211b (411b) can be set as a straight line or an arc.

[0043] Because the outer contour of a conventional cam is irregularly designed, the moving distances of the pressure plate 5 and / or the carrier plate 3 are not equal when the cam rotates at the same angle. This results in differences in the pressing force of the wire bonding device on the wire bonding, which in turn affects the wire bonding yield. At the same time, because the pressing force is uncontrollable, each pressing requires the operator to rely on their own experience to judge the pressing standard, resulting in low pressing efficiency and poor pressing accuracy.

[0044] This application embodiment adopts the disc cam shape design described above for the first cam 211 and the second cam 411. Compared with conventional cams, it uses the linear region and the semi-circular parts at both ends to form an involute outer contour shape, so that the rotation angle of the disc cam can correspond to the moving distance of the pressure plate 5 and / or the carrier plate 3. This allows the operator to accurately control the pressing force of the wire bonding device on the wire bonding wire, thereby improving the pressing efficiency and pressing accuracy of the wire bonding device.

[0045] Please see Figures 1-3 As shown, in some embodiments, the first drive assembly 21 further includes a first drive motor 212 and a first rotating shaft 213. The first drive motor 212 is mounted on the base 1, the first rotating shaft 213 is mounted on the drive end of the first drive motor 212, and the first cam 211 is sleeved on the first rotating shaft 213. In this embodiment, the end of the first rotating shaft 213 is provided with a spline, and the first cam 211 is sleeved on the first rotating shaft 213 through the spline engagement, and the first cam 211 rotates with the rotation of the first rotating shaft 213.

[0046] In some embodiments, the carrier plate connecting assembly 22 includes a first connector 221 and a first bearing 222. The first connector 221 is movably mounted on the base 1, and the first bearing 222 is disposed on the first connector 221, and the first bearing 222 rotatably abuts against the first cam 211. Figure 4 As shown; the carrier plate 3 is located on top of the first connector 221.

[0047] In this embodiment, the base 1 is provided with a receiving groove (not shown in the figure). The first connecting member 221 is installed in the receiving groove and can slide up and down along the receiving groove. The first bearing 222 is fixed to the bottom of the first connecting member 221 by a nut. The first cam 211 is located below the first connecting member 221 and corresponds to the position of the first bearing 222. In its natural state, the first connecting member 221, through its own weight, makes the outer wall of the first bearing 222 fit tightly against the outer contour surface of the first cam 211, so that the rotation of the first bearing 222 and the first cam 211 counteract each other. Figure 4 The direction indicated by the middle arrow is the direction of the gravity force applied by the first connector 221.

[0048] In this embodiment, the inclusion of a receiving groove ensures that the first connector 221 can be stably mounted on the base 1, preventing it from falling off. Simultaneously, the guiding effect of the receiving groove allows the weight of the first connector 221 to be directed along... Figure 4 The direction indicated by the middle arrow is applied to the first bearing 222, thereby ensuring that the rotation of the first bearing 222 and the first cam 211 is counteracted, thereby improving the accuracy of the wire bonding device in adjusting the movement of the carrier plate 3.

[0049] Please see Figure 1 As shown, in some embodiments, the carrier plate connection assembly 22 further includes at least one reset member 223, one end of which is connected to the base 1 and the other end is connected to the first connector 221. The reset member 223 is used to keep the first bearing 222 and the first cam 211 rotating against each other.

[0050] In this embodiment, the reset member 223 is a linear spring. One end of the linear spring is connected to the base 1, and the other end is connected to the first connecting member 221. The linear spring provides the first connecting member 221 with a downward force through its own elastic reset action, thereby applying downward pressure to the first bearing 222, thereby further ensuring that the first bearing 222 and the first cam 211 rotate against each other, and further improving the adjustment accuracy of the wire bonding device for the movement of the carrier plate 3.

[0051] Please continue reading. Figure 1 As shown, in some embodiments, the first drive assembly 21 further includes a first encoder 214, which is mounted on the base 1. In this embodiment, the first encoder 214 is a photoelectric encoder. The first encoder 214 is located near the end of the first rotating shaft 213, and the end of the first rotating shaft 213 is provided with a light shield. The first encoder 214 is used to detect the rotation angle of the first cam 211.

[0052] In this embodiment of the application, a first encoder 214 is provided so that the user can accurately read the rotation angle of the first cam 211, thereby determining the moving distance of the carrier plate 3 based on the rotation angle of the first cam 211.

[0053] Please see Figure 1 , Figure 2 As shown, in some embodiments, the second drive assembly 41 further includes a second drive motor 412 and a transmission assembly 413. The second drive motor 412 is mounted on the base 1, and one end of the transmission assembly 413 is connected to the drive end of the second drive motor 412, and the other end is connected to the second cam 411.

[0054] Please see Figure 1 , Figure 3 As shown, in this embodiment, the transmission assembly 413 includes a second rotating shaft 4131, a synchronous pulley 4132, and a synchronous belt 4133.

[0055] The second rotating shaft 4131 passes through the carrier plate connecting assembly 22. In this embodiment, the second rotating shaft 4131 passes through the first connecting member 221. The synchronous pulley 4132 and the second cam 411 are disposed at opposite ends of the second rotating shaft 4131. The synchronous belt 4133 is connected between the synchronous pulley 4132 and the driving end of the second drive motor 412.

[0056] In this embodiment, since the second rotating shaft 4131 needs to be mounted on the first connecting member 221 and the first connecting member 221 provides support for the second rotating shaft 4131, if the drive end of the second drive motor 412 is connected to the second rotating shaft 4131, the lifting and lowering of the first connecting member 221 may cause deformation or even breakage of the second rotating shaft 4131. To avoid this problem, this application uses the cooperation of the synchronous pulley 4132 and the synchronous belt 4133. By setting the tension frequency of the synchronous belt 4133, it is ensured that the transmission assembly 413 can maintain a transmission efficiency of more than 95%, and the lifting and lowering of the first connecting member 221 is avoided from causing damage to the second rotating shaft 4131.

[0057] Please see Figure 2 , Figure 5 As shown, in some embodiments, the pressure plate connecting assembly 42 includes a second connector 421, a second bearing 422, and an elastic member 423. The second connector 421 is movably mounted on the base 1. The second bearing 422 is mounted on the second connector 421 and is located below the second cam 411, with the second bearing 422 and the second cam 411 rotating against each other. The pressure plate 5 is mounted on the top of the second connector 421. The elastic member 423 is connected between the second connector 421 and the base 1, and the elastic member 423 is used to keep the second bearing 422 and the second cam 411 rotating against each other.

[0058] In this embodiment, the second cam 411 and the second bearing 422 are coupled as follows: Figure 5 As shown, with the rotation of the second cam 411, the second bearing 422 is pushed downward, thereby driving the second connecting member 421 downward, and thus controlling the pressure plate 5 to press down to achieve the bonding wire. Therefore, in order to ensure that the outer surface of the second bearing 422 is in close contact with the outer contour surface of the second cam 411, this embodiment of the application further provides an elastic member 423 between the second connecting member 421 and the base 1. Through the elastic restoring action of the elastic member 423, a certain stability is achieved. Figure 5 The force indicated by the arrow causes the second connector 421 to move upward in its natural state, ensuring that the second bearing 422 and the second cam 411 rotate in opposition.

[0059] Please see Figure 2 As shown, in some embodiments, the base 1 is provided with a sliding groove, and in this embodiment, the sliding groove is provided with a lifting guide rail.

[0060] In some embodiments, the second connector 421 includes a sliding seat 4211, a base 4212, a first support seat 4213, and a second support seat 4214.

[0061] The sliding seat 4211 is slidably mounted in the slide groove. In this embodiment, the two sides of the sliding seat 4211 are respectively provided with lifting guide blocks that cooperate with the lifting guide rail. The sliding seat 4211 is slidably mounted in the slide groove by the cooperation of the lifting guide blocks and the lifting guide rail.

[0062] The base 4212 is disposed on the top of the sliding seat 4211. In this embodiment, the base 4212 and the sliding seat 4211 are integrally formed, wherein the first support seat 4213 and the second support seat 4214 are disposed on opposite sides of the base 4212.

[0063] Please see Figure 1 , Figure 2 As shown, in this embodiment, the pressure plate connecting assembly 42 further includes a first clamp 424 and a second clamp 425. One of the first clamp 424 and the second clamp 425 is mounted on the first support base 4213, and the other is mounted on the second support base 4214. The first clamp 424 and the second clamp 425 cooperate to clamp the opposite side of the pressure plate 5.

[0064] Please see Figure 2 As shown, in some embodiments, the second drive assembly 41 further includes a second encoder 414, which is mounted on the base 1 and is used to detect the rotation angle of the second cam 411.

[0065] This application embodiment sets up a second encoder 414 so that the user can accurately read the rotation angle of the second cam 411, thereby determining the pressing distance of the pressure plate 5 based on the rotation angle of the second cam 411, and thus determining the pressing state of the welding wire.

[0066] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A wire bonding device, characterized in that, It includes a carrier plate and a pressure plate arranged opposite to each other, as well as a carrier plate driving mechanism for driving the carrier plate to move and a pressure plate driving mechanism for driving the pressure plate to move. The carrier plate and the pressure plate move relative to each other to achieve the pressing of the bonding wires. The carrier plate driving mechanism includes a first driving component and a carrier plate connecting component. The first driving component is provided with a first cam. One end of the carrier plate connecting component abuts against the outer contour surface of the first cam, and the other end is connected to the carrier plate. The first driving component drives the first cam to rotate, so that the carrier plate connecting component drives the carrier plate to move. The pressure plate driving mechanism includes a second driving component and a pressure plate connecting component. The second driving component is provided with a second cam. One end of the pressure plate connecting component abuts against the outer contour surface of the second cam, and the other end is connected to the pressure plate. The second driving component drives the second cam to rotate, so that the pressure plate connecting component drives the pressure plate to move.

2. The wire bonding device according to claim 1, characterized in that, The first cam and the second cam are disc cams; wherein, the disc cam includes an elliptical semicircular portion, a short semicircular portion, and a linear region connecting the elliptical semicircular portion and the short semicircular portion.

3. The wire bonding apparatus according to claim 1 or 2, characterized in that, The wire bonding device also includes a base, and both the carrier plate driving mechanism and the pressure plate driving mechanism are mounted on the base.

4. The wire bonding apparatus according to claim 3, characterized in that, The first drive assembly includes a first drive motor and a first rotating shaft. The first drive motor is mounted on the base, the first rotating shaft is mounted on the drive end of the first drive motor, and the first cam is sleeved on the first rotating shaft. The carrier plate connecting assembly includes a first connector and a first bearing. The first connector is movably mounted on the base, and the first bearing is disposed on the first connector, and the first bearing rotates against the first cam. The carrier plate is disposed on the top of the first connector.

5. The wire bonding apparatus according to claim 4, characterized in that, The carrier plate connection assembly further includes at least one reset member, one end of which is connected to the base and the other end of which is connected to the first connector. The reset member is used to keep the first bearing and the first cam rotating against each other.

6. The wire bonding apparatus according to claim 4, characterized in that, The first drive assembly further includes a first encoder, which is mounted on the base and is used to detect the rotation angle of the first cam.

7. The wire bonding apparatus according to claim 3, characterized in that, The second drive assembly includes a second drive motor and a transmission assembly. The second drive motor is mounted on the base. One end of the transmission assembly is connected to the drive end of the second drive motor, and the other end is connected to the second cam. The pressure plate connecting assembly includes a second connector, a second bearing, and an elastic element. The second connector is movably mounted on the base. The second bearing is mounted on the second connector and is located below the second cam. The second bearing and the second cam rotate against each other. The pressure plate is mounted on the top of the second connector. The elastic element is connected between the second connector and the base and is used to keep the second bearing and the second cam rotating against each other.

8. The wire bonding apparatus according to claim 7, characterized in that, The transmission assembly includes a second rotating shaft, a synchronous pulley, and a synchronous belt; the second rotating shaft passes through the carrier plate connecting mechanism, and the synchronous pulley and the second cam are disposed at opposite ends of the second rotating shaft; the synchronous belt is connected between the synchronous pulley and the drive end of the second drive motor.

9. The wire bonding apparatus according to claim 8, characterized in that, The second drive assembly further includes a second encoder mounted on the base, the second encoder being used to detect the rotation angle of the second cam.

10. The wire bonding apparatus according to claim 7, characterized in that, The base is provided with a sliding groove; the second connecting member includes a sliding seat, a base, a first support seat and a second support seat, the sliding seat is slidably installed in the sliding groove, the base is disposed on the top of the sliding seat, and the first support seat and the second support seat are disposed on opposite sides of the base; The pressure plate connecting assembly further includes a first clamp and a second clamp, one of which is mounted on the first support base and the other is mounted on the second support base. The first clamp and the second clamp cooperate to clamp the opposite side of the pressure plate.

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