Cam synchronization device of wire bonding machine and control method thereof

Abstract

The present invention discloses a cam synchronization device of a wire bonding machine and a control method thereof, which relates to the field of semiconductor packaging and testing technology, and comprises: a hook needle drive motor, whose output end is equipped with a lead screw, and at least one group of feed platform transmission rods are installed on the lower side, and a hook needle assembly is installed on the outer side of the lead screw; a pressure claw platform is arranged on the lower side of the lead screw, and at least one group of pressure claw platform transmission rods are installed on the lower side of the pressure claw platform; a synchronous wheel drive motor is arranged on the lower side of the pressure claw platform transmission rod, and a cam synchronization shaft is installed on the output end; a pressure claw platform cam, and at least one group of the pressure claw platform cams are installed on the outer side of the cam synchronization shaft. When the present invention is working, a cam structure is used for action connection synchronization, which can effectively improve synchronization reliability, reduce system complexity, and improve product production quality consistency.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor packaging and testing, and in particular to a cam synchronization device of a wire bonding machine and a control method thereof. Background Art

[0002] A wire bonder is a device widely used in the semiconductor packaging process. Its main function is to use thin metal wires to tightly weld metal leads to substrate pads through heat, pressure, ultrasonic energy, etc., thereby achieving electrical interconnection between the chip and the substrate and information exchange between chips.

[0003] When the wire bonding machine is working continuously, it is necessary to use relevant material pushing equipment or structure to continuously transport the products to be processed to the processing part inside it. In the prior art, it is usually combined with a pressure claw mechanism to complete the actions of material stepping-pressure claw pressing-welding-pressure claw lifting-pushing the next material.

[0004] Similar products use a separate independent servo structure to complete material stepping. Multiple actions (claw lifting, material stepping) are independently controlled by the control system and synchronously controlled by the control system. The claw lifting uses a cylinder structure, and the material stepping uses a servo belt and hook structure. The core synchronization unit uses a PLC claw platform system to achieve soft synchronization.

[0005] The traditional synchronous structure uses a PLC pressure claw platform as the core, and uses a cylinder and a servo motor to complete the action. The overall structure of the system is complex, and there are many hidden dangers and failure points. The real-time synchronization is poor. Under high-speed conditions, abnormal movements may occur due to asynchrony, which may cause system alarms or production stoppages. Therefore, the reliability of synchronization is very important. Summary of the invention

[0006] The object of the present invention is to provide a cam synchronization device of a wire bonding machine and a control method thereof.

[0007] The technical problem solved by the present invention is: how to solve the problems of complex overall structure and poor synchronization and real-time performance in the prior art.

[0008] The present invention can be implemented by the following technical scheme: A cam synchronization device of a wire bonding machine, comprising a hook needle drive motor, a synchronous wheel drive motor and a pressure claw platform, wherein a lead screw is installed at the output end of the hook needle drive motor, and at least one set of feed platform transmission rods is installed at the lower side of the hook needle drive motor;

[0009] A hook assembly is installed on the outer side of the screw rod. After the hook drive motor is started, the hook assembly is driven to move horizontally through the screw rod;

[0010] The pressure claw platform is arranged on the lower side of the screw rod, and at least one group of pressure claw platform transmission rods are installed on the lower side of the pressure claw platform;

[0011] The synchronous wheel driving motor is arranged at the lower side of the screw rod, and a cam synchronous shaft is installed at the output end of the synchronous wheel driving motor, and at least one group of pressure claw platform cams and at least one group of feed platform cams are installed at the outer side of the cam synchronous shaft;

[0012] The distribution position and quantity of the cams of the pressure claw platform correspond to the transmission rod of the pressure claw platform, and the distribution position and quantity of the cams of the feeding platform correspond to the transmission rod of the feeding platform;

[0013] After the cam synchronization shaft is driven by the synchronous wheel driving motor to rotate, the cam of the pressure claw platform and the cam of the feed platform are driven to rotate at a preset angle, and then contact the corresponding transmission rod of the pressure claw platform and the transmission rod of the feed platform;

[0014] A photoelectric switch is arranged at the lower side of the cam synchronization shaft, and a timing synchronization disk is installed at the outer side of the cam synchronization shaft. The timing synchronization disk rotates in the photoelectric switch in a non-contact manner based on the cam synchronization shaft.

[0015] A further technical improvement of the present invention is that two groups of openings are provided inside the timing synchronization disk, and the eccentric angle phase difference between the two groups of openings is 60°.

[0016] A further technical improvement of the present invention is that: a first lifting assembly is provided on one side of the pressing claw platform transmission rod and the feeding platform transmission rod, and the first lifting assembly moves synchronously with the pressing claw platform transmission rod or the feeding platform transmission rod;

[0017] The inside of the pressure claw platform transmission rod and the feed platform transmission rod are both installed with lubrication components, and the lubrication components are used to transport the lubricating medium to the inside of the pressure claw platform transmission rod or the feed platform transmission rod;

[0018] After the first lifting component is started, the lubricating medium in the pressure claw platform transmission rod or the feed platform transmission rod is transported to the contact part between the pressure claw platform transmission rod or the feed platform transmission rod and the pressure claw platform cam or the feed platform cam through the lubrication component.

[0019] A further technical improvement of the present invention is that: a medium groove is provided inside the transmission rod of the pressure claw platform and the transmission rod of the feed platform, and a connecting groove is provided on one side of the bottom end of the medium groove, and the lubricating medium enters the medium groove through the connecting groove;

[0020] The bottoms of the transmission rod of the pressure claw platform and the transmission rod of the feeding platform are both provided with contact grooves, and the bottom ends of the medium grooves are connected with the corresponding contact grooves.

[0021] A further technical improvement of the present invention is that: the lubrication assembly includes a connecting rod, the connecting rod is slidably connected inside the corresponding medium groove, and a pushing member is installed at the bottom of the connecting rod;

[0022] The pusher blocks the connecting portion between the medium groove and the connecting groove;

[0023] A side rod is installed on the side of the connecting rod, and the side rod is connected to the output end of the corresponding first lifting assembly;

[0024] After the first lifting assembly is started, the connecting rod is driven to move by the side rod, thereby lifting the pushing member upward from the portion where the connecting groove and the medium groove are connected. Under the action of external pressure, the lubricating medium is transported from the connecting groove to the inside of the medium groove. Then the first lifting assembly resets the connecting rod, and the connecting rod moves the pushing member downward, thereby re-blocking the connecting portion between the connecting groove and the medium groove while pushing the lubricating medium inside the medium groove to the inside of the contact groove.

[0025] A further technical improvement of the present invention is that a third lifting assembly is installed inside each of the pressure claw platform cam and the feed platform cam, the output end of the third lifting assembly faces outward and is installed with a scraper;

[0026] After the third lifting assembly is started, the scraper is extended to the outside of the corresponding pressure claw platform cam or feed platform cam, and when the scraper rotates, it passes through the inside of the contact groove of the corresponding pressure claw platform cam or feed platform cam to spread the lubricating medium.

[0027] A further technical improvement of the present invention is that: a second lifting assembly is disposed on the lower side of each of the pressure claw platform cams and each of the feed platform cams, and a recovery assembly is installed at the output end of each of the second lifting assemblies;

[0028] After the second lifting assembly is started, the recovery assembly is moved to the moving path of the scraper in the corresponding pressure claw platform cam or the feed platform cam.

[0029] A further technical improvement of the present invention is that: the recovery assembly includes a connecting frame, and the connecting frame is used to connect with the corresponding second lifting assembly;

[0030] A receiving groove is provided inside the connecting frame, and a scraping member is installed inside the receiving groove via a torsion spring disc;

[0031] A circular arc portion is arranged on the top of the scraping member, and the circular arc portion is inclined toward the rotation direction of the scraper.

[0032] The present invention also discloses a control method for a cam synchronization device of a wire bonding machine, the control method comprising the following steps:

[0033] S1, the synchronous wheel drives the motor to start rotating clockwise, and the inverter stabilizes the speed, driving the cam synchronous shaft to rotate;

[0034] S2, the claw platform cam, timing synchronous disc and feed platform cam on the cam synchronous shaft rotate synchronously;

[0035] S3, at 0°, the cam of the pressure claw platform lifts up the pressure claw platform and the transmission rod structure of the pressure claw platform, the pressure claw platform is lifted up, and the material feeding channel is unblocked;

[0036] S4, after the cam synchronization shaft rotates 90°, the feed platform cam lifts the hook drive motor and the lead screw through the feed platform transmission rod, and the hook assembly is lifted;

[0037] S5, at 135°, the photoelectric switch detects the opening of the timing synchronous disk and triggers a signal to the hook drive motor;

[0038] S6, the hook drive motor runs forward for a preset number of turns based on the number of turns and the feed amount and stops;

[0039] S7, at 180°, the hook assembly is lowered;

[0040] S8, at 195°, the viewpoint switch detects the opening of the timing synchronizing disk and triggers a signal to the hook drive motor;

[0041] S9, the hook drive motor runs in the reverse direction for a preset number of turns based on the number of turns and the feed amount and stops, at which time the material is dragged forward by one unit;

[0042] S10, at 210°, the pressure claw platform and the pressure claw platform transmission rod are lowered, and the welding material is pressed;

[0043] S11, 210°-360° system completes welding work; and jumps to 0° to continue the material feeding action.

[0044] A further technical improvement of the present invention is that after working for a period of time, each of the pressure claw platform transmission rods and the feed platform transmission rods is lubricated, including the following steps:

[0045] A1. Each first lifting assembly is started to open the lubrication assembly, thereby delivering the lubricating medium to the contact groove at the bottom of the pressure claw platform transmission rod or the feed platform transmission rod;

[0046] A2. The third lifting assembly in each of the pressure claw platform cam and the feed platform cam is started to extend the scraper to the outside of the corresponding pressure claw platform cam or the feed platform cam;

[0047] A3. Each second lifting assembly is started to raise the recovery assembly to the moving path of the corresponding scraper;

[0048] A4. After the scraper enters the contact groove of the corresponding pressure claw platform cam or feed platform cam, the lubricating medium is applied to the inside of the contact groove, and when the scraper passes through the corresponding recovery component, the recovery component removes the excess lubricating medium on the outside of the scraper.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] When the present invention is working, the cam structure is used for action connection synchronization, which can effectively improve the synchronization reliability, reduce the complexity of the system, and improve the consistency of product production quality;

[0051] And after working for a period of time, the contact parts of each pressure claw platform transmission rod, feed platform transmission rod and pressure claw platform cam, and feed platform cam can be lubricated through the cooperation of the recovery component and the lubrication component to avoid excessive wear of the contact parts between the components after long-term contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0053] Figure 1 It is a structural schematic diagram of the present invention;

[0054] Figure 2 It is a side sectional view of the timing synchronous disc in the present invention;

[0055] Figure 3 It is a side sectional view of the cam of the pressure claw platform in the present invention;

[0056] Figure 4 is a side sectional view of the recovery assembly of the present invention;

[0057] Figure 5 It is a structural schematic diagram of the lubrication component in the present invention;

[0058] In the figure: 1. hook drive motor; 2. screw rod; 3. hook assembly; 4. feed platform transmission rod; 5. cam synchronization shaft; 6. pressure claw platform cam; 7. feed platform cam; 8. photoelectric switch; 9. timing synchronization disk; 10. pressure claw platform; 11. pressure claw platform transmission rod; 12. first lifting assembly; 13. lubrication assembly; 14. second lifting assembly; 15. recovery assembly; 16. synchronous wheel drive motor; 91. opening; 61. third lifting assembly; 62. scraper; 151. connecting frame; 152. storage groove; 153. torsion spring disk; 154. scraper; 131. connecting rod; 132. connecting groove; 133. pusher; 134. side rod. DETAILED DESCRIPTION

[0059] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0060] See also Figure 1-5 As shown, a cam synchronization device of a wire bonding machine includes a hook needle drive motor 1, a synchronous wheel drive motor 16 and a pressure claw platform 10, a lead screw 2 is installed at the output end of the hook needle drive motor 1, and two sets of feed platform transmission rods 4 are installed on the lower side of the hook needle drive motor 1;

[0061] The hook drive motor 1 is a servo motor driven by a servo driver, and the servo driver has built-in repetitive motion parameters;

[0062] The synchronous wheel drive motor 16 is an asynchronous traction motor driven by a frequency converter;

[0063] A hook assembly 3 is installed on the outer side of the screw rod 2. After the hook drive motor 1 is started, the hook assembly 3 is driven to move horizontally through the screw rod 2;

[0064] The pressure claw platform 10 is arranged on the lower side of the screw rod 2, and two sets of pressure claw platform transmission rods 11 are installed on the lower side of the pressure claw platform 10;

[0065] The synchronous wheel driving motor 16 is arranged at the lower side of the screw rod 2, and the output end of the synchronous wheel driving motor 16 is installed with a cam synchronization shaft 5, and the outer side of the cam synchronization shaft 5 is installed with two groups of pressure claw platform cams 6 and two groups of feed platform cams 7;

[0066] The distribution position and quantity of the pressing claw platform cam 6 correspond to the pressing claw platform transmission rod 11, and the distribution position and quantity of the feeding platform cam 7 correspond to the feeding platform transmission rod 4;

[0067] After the cam synchronization shaft 5 rotates based on the synchronous wheel driving motor 16, it drives the pressure claw platform cam 6 and the feed platform cam 7 to rotate by a preset angle and then contact the corresponding pressure claw platform transmission rod 11 and the feed platform transmission rod 4;

[0068] A photoelectric switch 8 is provided on the lower side of the cam synchronization shaft 5, and a timing synchronization disk 9 is installed on the outer side of the cam synchronization shaft 5. The timing synchronization disk 9 rotates in the photoelectric switch 8 in a non-contact manner based on the cam synchronization shaft 5;

[0069] The pressure claw platform cam 6, the cam synchronization shaft 5, the timing synchronization plate 9, and the feed platform cam 7 are hard-connected, and the cam synchronization shaft 5 and the feed platform cam 7 are connected by hardware;

[0070] The pressing claw platform transmission rod 11 and the pressing claw platform cam 6 are installed in a contact manner;

[0071] The feed platform cam 7 and the feed platform transmission rod 4 are installed in a contact manner;

[0072] The hook assembly 3, the screw rod 2, the hook drive motor 1, and the feed platform transmission rod 4 are integrated into one body;

[0073] The pressing claw platform 10 and the pressing claw platform transmission rod 11 are hard connected;

[0074] The pressing claw platform cam 6 and the feeding platform cam 7 are cam eccentric shaft structures;

[0075] The timing synchronous disc 9 is a concentric disc structure;

[0076] The eccentric angle phase of the feeding platform cam 7 lagging behind the pressing claw platform cam 6 is 90°, and the eccentric angle phase difference of the timing synchronization disk 9 photoelectric switch 8 hole lagging behind the feeding platform cam 7 is 30°.

[0077] A first lifting assembly 12 is provided on one side of the pressing claw platform transmission rod 11 and the feeding platform transmission rod 4, and the first lifting assembly 12 moves synchronously with the pressing claw platform transmission rod 11 or the feeding platform transmission rod 4;

[0078] A lubrication assembly 13 is installed inside the pressure claw platform transmission rod 11 and the feed platform transmission rod 4 . The lubrication assembly 13 is used to transport the lubrication medium to the inside of the pressure claw platform transmission rod 11 or the feed platform transmission rod 4 .

[0079] A second lifting assembly 14 is disposed on the lower side of each pressing claw platform cam 6 and each feeding platform cam 7, and a recovery assembly 15 is installed at the output end of each second lifting assembly 14;

[0080] After the second lifting assembly 14 is started, the recovery assembly 15 is moved to the moving path of the scraper 62 in the corresponding pressing claw platform cam 6 or feeding platform cam 7 .

[0081] See also Figure 2 As shown, two groups of openings 91 are provided inside the timing synchronization disk 9, and the eccentric angle phase difference between the two groups of openings 91 is 60°.

[0082] See also Figure 3 As shown, each of the pressing claw platform cam 6 and the feeding platform cam 7 is internally installed with a third lifting assembly 61, the output end of the third lifting assembly 61 faces outward and is installed with a scraper 62;

[0083] After the third lifting assembly 61 is started, the scraper 62 is extended to the outside of the corresponding pressure claw platform cam 6 or the feed platform cam 7, and when the scraper 62 rotates, it passes through the inside of the contact groove of the corresponding pressure claw platform cam 6 or the feed platform cam 7 to spread the lubricating medium.

[0084] See also Figure 4 As shown, the recovery assembly 15 includes a connecting frame 151, and the connecting frame 151 is used to connect with the corresponding second lifting assembly 14;

[0085] A receiving groove 152 is provided inside the connecting frame 151, and a scraper 154 is installed inside the receiving groove 152 via a torsion spring disc 153;

[0086] A circular arc portion is provided at the top of the scraping member 154 , and the circular arc portion is inclined toward the rotation direction of the scraper plate 62 .

[0087] See also Figure 5 As shown, the inside of the pressing claw platform transmission rod 11 and the feeding platform transmission rod 4 are both provided with a medium groove, and a connecting groove 132 is provided on one side of the bottom end of the medium groove, and the lubricating medium enters the inside of the medium groove through the connecting groove 132;

[0088] The bottoms of the pressing claw platform transmission rod 11 and the feeding platform transmission rod 4 are both provided with contact grooves, and the bottom ends of the medium grooves are connected to the corresponding contact grooves.

[0089] The lubrication assembly 13 includes a connecting rod 131, which is slidably connected inside the corresponding medium slot, and a pusher 133 is installed at the bottom of the connecting rod 131;

[0090] The pusher 133 blocks the connection between the medium slot and the connection slot 132;

[0091] A side rod 134 is installed on the side of the connecting rod 131, and the side rod 134 is connected to the output end of the corresponding first lifting assembly 12;

[0092] After the first lifting assembly 12 is started, the connecting rod 131 is driven to move through the side rod 134, thereby lifting the pushing member 133 upward from the portion where the connecting groove 132 is connected to the medium groove. Under the action of external pressure, the lubricating medium is transported from the connecting groove 132 to the inside of the medium groove. Then, the first lifting assembly 12 resets the connecting rod 131, and the connecting rod 131 moves the pushing member 133 downward, thereby pushing the lubricating medium inside the medium groove to the inside of the contact groove, and at the same time re-blocking the connecting portion between the connecting groove 132 and the medium groove.

[0093] When the present invention is used:

[0094] Set the initial angle of the cam synchronization shaft 5 to 0°;

[0095] The synchronous wheel driving motor 16 starts to rotate clockwise, and the frequency converter stabilizes the speed, driving the cam synchronous shaft 5 to rotate;

[0096] The pressure claw platform cam 6, the timing synchronous disk 9, and the feed platform cam 7 on the cam synchronous shaft 5 rotate synchronously;

[0097] At 0°, the pressing claw platform cam 6 lifts up the pressing claw platform 10 and the pressing claw platform transmission rod 11 structure, the pressing claw platform 10 is lifted, and the material feeding channel is unblocked;

[0098] After the cam synchronization shaft 5 rotates 90°, the feed platform cam 7 lifts the hook drive motor 1 and the screw rod 2 through the feed platform transmission rod 4, and the hook assembly 3 is lifted;

[0099] At 135°, the photoelectric switch 8 detects a group of openings 91 of the timing synchronization disk 9, and a trigger signal is given to the hook drive motor 1;

[0100] The hook drive motor 1 runs forward for 10 turns and then stops;

[0101] At 180°, the feeding platform cam 7 is separated from the feeding platform transmission rod 4, and the hook assembly 3 is lowered;

[0102] At 195°, the viewpoint switch detects another set of openings 91 of the timing synchronizing disk 9, and triggers a signal to the hook drive motor 1;

[0103] The hook drive motor 1 runs in the reverse direction for 10 turns and stops, at which time the material is dragged forward by one unit;

[0104] At 210°, the pressure claw platform 10 and the pressure claw platform transmission rod 11 are lowered, and the welding material is pressed;

[0105] The 210°-360° system completes the welding work and jumps to 0° to continue the material feeding action;

[0106] After working for a period of time, each first lifting assembly 12 is started, driving the connecting rod 131 in the lubricating assembly 13 to lift upward first, connecting the connecting groove 132 with the medium groove, and the lubricating medium is transported to the inside of the medium groove under the action of the external high pressure, and then each first lifting assembly 12 is reset, each connecting rod 131 is moved downward, and the lubricating medium is pressed down to the contact groove on the lower side of each pressing claw platform cam 6 and the feeding platform cam 7 through each pushing member 133;

[0107] The part where the lubricating medium is delivered to the contact groove is arranged at one end where the scraper 62 enters the contact groove;

[0108] At the same time, the third lifting assembly 61 in each of the pressure claw platform cam 6 and the feeding platform cam 7 is started to move the scraper 62 to the outside, and the scraper 62 is located at a height corresponding to the outside of the pressure claw platform cam 6 and the feeding platform cam 7, which does not exceed the height of the corresponding pressure claw platform cam 6 and the feeding platform cam 7 embedded in the corresponding contact groove;

[0109] After the scraper 62 enters the corresponding contact groove, each second lifting component 14 is started, and each scraper 62 moves along the corresponding contact groove to apply the lubricating medium to the contact groove, and when passing through the corresponding recovery component 15, it contacts the scraping member 154 inside it, and the scraping member 154 is rotated by the torsion spring disk 153. When the scraping member 154 rotates, the lubricating medium on the surface of the scraper 62 is removed.

[0110] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A cam synchronization device for a wire bonding machine, characterized in that: include: A hook drive motor (1) is provided with a screw rod (2) at its output end and at least one set of feed platform transmission rods (4) is provided at its lower side. A hook assembly (3) is installed on the outside of the screw rod (2); A pressure claw platform (10) is arranged on the lower side of the screw rod (2), and at least one set of pressure claw platform transmission rods (11) is installed on the lower side of the pressure claw platform (10); A synchronous wheel driving motor (16) is arranged on the lower side of the pressing claw platform transmission rod (11), and a cam synchronous shaft (5) is installed at the output end; A pressure claw platform cam (6), at least one group of the pressure claw platform cams (6) is installed on the outside of the cam synchronization shaft (5), and the distribution position and number of the pressure claw platform cams (6) correspond to the pressure claw platform transmission rod (11); Feeding platform cams (7), at least one group of the feeding platform cams (7) is installed on the outside of the cam synchronization shaft (5), and the distribution position and number of the feeding platform cams (7) correspond to the feeding platform transmission rod (4); A photoelectric switch (8) is arranged on the lower side of the cam synchronization shaft (5); A timing synchronizing disk (9) is mounted on the outer side of the cam synchronizing shaft (5) and rotates in a non-contact manner in the photoelectric switch (8) based on the cam synchronizing shaft (5); A first lifting assembly (12) is provided on one side of the pressing claw platform transmission rod (11) and the feeding platform transmission rod (4); The pressing claw platform transmission rod (11) and the feeding platform transmission rod (4) are both internally installed with a lubrication assembly (13); The pressing claw platform transmission rod (11) and the feeding platform transmission rod (4) are both provided with a medium groove inside, and a connecting groove (132) is provided on one side of the bottom end of the medium groove; The bottoms of the pressing claw platform transmission rod (11) and the feeding platform transmission rod (4) are both provided with contact grooves, and the bottom ends of the medium grooves are connected to the corresponding contact grooves; The lubrication assembly (13) comprises a connecting rod (131), the connecting rod (131) is slidably connected inside the corresponding medium slot, and a pushing member (133) is installed at the bottom of the connecting rod (131); The pushing member (133) blocks the connecting portion between the medium groove and the connecting groove (132); A side rod (134) is installed on the side of the connecting rod (131), and the side rod (134) is connected to the output end of the corresponding first lifting assembly (12); A third lifting assembly (61) is installed inside each of the pressing claw platform cam (6) and the feeding platform cam (7), and the output end of the third lifting assembly (61) faces outward and is installed with a scraper (62); A second lifting assembly (14) is provided on the lower side of each of the pressing claw platform cams (6) and each of the feeding platform cams (7), and a recovery assembly (15) is installed at the output end of each of the second lifting assemblies (14); The recovery assembly (15) comprises a connecting frame (151), and the connecting frame (151) is used to be connected to the corresponding second lifting assembly (14); A receiving groove (152) is provided inside the connecting frame (151), and a scraping member (154) is installed inside the receiving groove (152) via a torsion spring disc (153); A circular arc portion is arranged at the top of the scraping member (154), and the circular arc portion is inclined toward the rotation direction of the scraper (62).

2. The cam synchronization device of a wire bonding machine according to claim 1, characterized in that: Two groups of openings (91) are provided inside the timing synchronization disk (9), and the eccentric angle phase difference between the two groups of openings (91) is 60°.

3. The control method of the cam synchronization device of the wire bonding machine according to claim 2, characterized in that: The control method comprises the following steps: S1, the synchronous wheel driving motor (16) starts to rotate clockwise, and the frequency converter stabilizes the speed, driving the cam synchronous shaft (5) to rotate; S2, the pressure claw platform cam (6), the timing synchronization disk (9) and the feed platform cam (7) on the cam synchronization shaft (5) rotate synchronously; S3, at 0°, the pressing claw platform cam (6) lifts up the pressing claw platform (10) and the pressing claw platform transmission rod (11) structure, the pressing claw platform is lifted up, and the material feeding channel is unblocked; S4, after the cam synchronization shaft (5) rotates 90 degrees, the feed platform cam (7) lifts the hook drive motor (1) and the screw rod (2) through the feed platform transmission rod (4), and the hook assembly (3) is lifted; S5, at 135°, the photoelectric switch (8) detects the first set of openings of the timing synchronization disk (9), and a trigger signal is sent to the hook drive motor (1); S6, the hook drive motor (1) runs forward for a preset number of turns based on the number of turns and the feed amount and then stops; S7, at 180°, the hook assembly (3) is lowered; S8, at 195°, the viewpoint switch detects the second set of openings of the timing synchronization disk (9), and triggers a signal to the hook drive motor (1); S9, the hook drive motor (1) runs in the reverse direction for a preset number of turns based on the number of turns and the feed amount and stops, and the material is dragged forward by one unit; S10, at 210°, the pressing claw platform (10) and the pressing claw platform transmission rod (11) are lowered, and the welding material is pressed; S11, 210°-360° system completes welding work and jumps to 0° to continue the material feeding action.

4. The control method of the cam synchronization device of the wire bonding machine according to claim 3, characterized in that: After working for a period of time, each pressing claw platform transmission rod (11) and the feeding platform transmission rod (4) are lubricated, including the following steps: A1. Each first lifting assembly (12) is started to open the lubrication assembly (13), thereby delivering the lubricating medium to the contact groove at the bottom of the pressure claw platform transmission rod (11) or the feed platform transmission rod (4); A2, the third lifting assembly (61) in each of the pressure claw platform cam (6) and the feeding platform cam (7) is started to extend the scraper (62) to the outer side of the corresponding pressure claw platform cam (6) or the feeding platform cam (7); A3, each second lifting assembly (14) is started to raise the recovery assembly (15) to the moving path of the corresponding scraper (62); A4. After the scraper (62) enters the contact groove of the corresponding pressure claw platform cam (6) or the feed platform cam (7), the lubricating medium is applied to the inside of the contact groove, and when the scraper (62) passes through the corresponding recovery component (15), the recovery component (15) removes the excess lubricating medium on the outside of the scraper (62).

Images