CN218004775U - Quick response wire clamp based on piezoelectric actuator - Google Patents
Quick response wire clamp based on piezoelectric actuator Download PDFInfo
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- CN218004775U CN218004775U CN202222161533.0U CN202222161533U CN218004775U CN 218004775 U CN218004775 U CN 218004775U CN 202222161533 U CN202222161533 U CN 202222161533U CN 218004775 U CN218004775 U CN 218004775U
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- wire clamp
- piezoelectric actuator
- fixing seat
- screw
- clamp fixing
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Abstract
The utility model relates to the field of lead bonding equipment, in particular to a quick response wire clamp based on a piezoelectric actuator, which comprises a bracket, a wire clamp fixing seat, a wire clamp body, a compression spring and a piezoelectric actuator, wherein the bracket is used for being connected with an equipment main body; the wire clamp fixing seat is arranged on the bracket through two rotating shafts, and the wire clamp body is arranged on the lower side of the wire clamp fixing seat; the bracket is provided with a spring bracket and a piezoelectric actuator mounting seat, a first screw is arranged on the wire clamp fixing seat and penetrates through a first clearance hole on the spring bracket, a compression spring is sleeved on the first screw, and a spring adjusting nut is arranged at the end part of the first screw; one end of the piezoelectric actuator is connected with the piezoelectric actuator mounting seat, and the other end of the piezoelectric actuator is connected with the second screw. The utility model discloses the flexible realization fastener of control piezoelectric actuator is opened, and the power that leans on compression spring to reset realizes that the fastener is closed, because piezoceramics warp to have response time short and the fast characteristics of rate of motion, makes the fastener open and shut ability quick response, has improved the quality and the speed of lead bonding.
Description
Technical Field
The utility model relates to a lead bonding equipment field especially relates to a piezoceramics driven gold wire fastener for automatic wedge bonding machine, specifically is a quick response fastener based on piezoelectric actuator for automatic wedge bonding machine.
Background
Semiconductor devices require many inputs and outputs to connect with other electronic components to enable communication of the chip with the outside world and use with different devices. In the packaging of semiconductor devices, wire bonding has been the primary method of providing such electrical interconnections between two chips, and between a chip and a substrate or leadframe. Wire bonding can be divided into ball bonding and wedge bonding. Gold is currently the most widely used lead material, and commonly used gold wires are typically 18 to 70 microns in diameter.
The wire clamp is one of the key components for controlling wire transmission and wire adjustment arcs in a bonding machine, the response and movement speed and the opening and closing amount of the wire clamp are key factors influencing the consistency of the arcs, and the quality and the efficiency of wire bonding are directly influenced, however, the response speed and the movement speed of the wire clamp controlled pneumatically are slower at present.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to overcome the slow not enough of traditional pneumatic control fastener response speed and velocity of motion, provide a quick response fastener based on piezoelectric actuator. Compared with the traditional pneumatic control, the piezoelectric actuator based on the piezoelectric ceramics has higher response speed and movement speed.
The utility model discloses an adopt following technical scheme to realize: a quick response wire clamp based on a piezoelectric actuator comprises a support, a wire clamp fixing seat, a wire clamp body, a compression spring and the piezoelectric actuator,
a frame with an opening at one side is arranged above the right end of the bracket, rotating shaft mounting holes are formed in the front frame and the rear frame of the frame, the upper end of the wire clamp fixing seat is a frame with an opening at one side, step holes are formed in the front frame and the rear frame of the frame, bearings are mounted in the step holes, the frame at the upper end of the wire clamp fixing seat is positioned in the frame above one end of the bracket, the step holes are coaxial with the rotating shaft mounting holes, a horizontal rotating shaft penetrates through the rotating shaft mounting holes and leans against the inner rings of the bearings, and the rotating shaft serves as a rotating fulcrum shaft of the wire clamp fixing seat; the wire clamp body is arranged at the lower end of the wire clamp fixing seat, the top of the wire clamp body is provided with a position avoiding gap, the bottom of the wire clamp fixing seat is provided with a position avoiding gap, and a gap for the tip end of the transducer to pass through is formed between the wire clamp body and the wire clamp fixing seat;
the support is also provided with a spring support and a piezoelectric actuator, the spring support is of an L-shaped structure, one end of one arm of the spring support is connected with the support, the other arm of the spring support is positioned on the right side of the wire clamp fixing seat (as shown in figure 1), the other arm of the spring support is provided with a first clearance hole, the wire clamp fixing seat is provided with a threaded hole, the left end of a first screw is fixed at the threaded hole, the right end of the first screw penetrates through the first clearance hole, a compression spring is sleeved on a screw rod of the first screw, the screw rod is positioned on the right side of the first clearance hole, and a spring adjusting nut for adjusting the pre-tightening force of the compression spring is arranged at the end part (head part) of the right end of the first screw; one end of the piezoelectric actuator is connected to the support, a second clearance hole is formed in the wire clamp fixing seat, a second screw penetrates through the second clearance hole to be connected with the other end of the piezoelectric actuator, and a distance is formed between the head of the second screw and the wire clamp fixing seat.
Before this fastener uses, be connected with bonding machine equipment main part earlier, specific connection is as follows: the support is fixed on the energy converter fixing block through an inner hexagonal socket head cap screw, the energy converter penetrates through the energy converter fixing block and is fixed through an inner hexagonal flat end fastening screw, the pointed end of the energy converter penetrates through a gap formed between the wire clamp body and the wire clamp fixing seat, the riving knife penetrates through a round hole at the pointed end of the energy converter and is fixed through the inner hexagonal flat end fastening screw, a gap is reserved between the riving knife and the wire clamp body, and after a gold wire penetrates through a vertical hole of the spring support and a tube hole of the riving knife, the gold wire comes out from the pointed end of the riving knife and passes through the gap between the pointed end of the riving knife and the wire clamp body.
The working principle is as follows: the piezoelectric actuator generates contraction deformation after being electrified, the wire clamp fixing seat is driven to swing leftwards around the rotating shaft, the compression spring is stressed and compressed, the wire clamp body moves leftwards, and the wire clamp body is far away from the tip of the riving knife, so that the wire clamp is opened. When the piezoelectric actuator is powered off, the original shape is recovered, the compression spring also starts to recover, the wire clamp fixing seat is pulled to swing rightwards around the rotating shaft, the wire clamp body moves rightwards, the wire clamp body is close to the tip of the riving knife, the closing of the wire clamp is realized, and the adjustment of the closing force of the wire clamp can be realized through the adjusting spring adjusting nut.
The difference value obtained by subtracting the distance between the second screw and the wire clamp fixing seat from the maximum stroke of the piezoelectric actuator is the wire clamp opening distance which needs to be larger than the diameter of the gold wire; before the piezoelectric actuator drives the wire clamp fixing seat to swing, the second screw must be driven to move firstly until the head of the second screw contacts with the wire clamp fixing seat, the wire clamp fixing seat swings, the distance between the second screw and the wire clamp fixing seat can be adjusted, and therefore the difference value, namely the wire clamp opening distance, can be adjusted, and therefore the wire clamp can adapt to gold wires with different diameters.
Foretell a quick response fastener based on piezoelectric actuator, the tip of preceding frame and back frame of support frame is equipped with the screw hole of perpendicular to pivot mounting hole, and holding screw is used for passing the screw hole, holding screw top with pivot cylinder surface butt.
According to the quick response wire clamp based on the piezoelectric actuator, the main body of the support is provided with the first strip-shaped notch and the second strip-shaped notch, the first strip-shaped notch is connected with the main body of the bonder equipment through the two screws, the second strip-shaped notch is connected with the piezoelectric actuator mounting seat through the screw and the two positioning pins, and one end of the piezoelectric actuator is connected to the piezoelectric actuator mounting seat on the support.
According to the quick response wire clamp based on the piezoelectric actuator, the two clearance holes are symmetrically arranged on the front side and the rear side of the position avoiding notch on the top of the wire clamp body, the two threaded holes are symmetrically arranged on the front side and the rear side of the position avoiding notch on the bottom of the wire clamp fixing seat, the screws are connected with the threaded holes through the clearance holes, and the wire clamp fixing seat and the installation surface of the wire clamp body are concave platforms lower than the surface of the wire clamp fixing seat.
According to the quick response wire clamp based on the piezoelectric actuator, the groove is formed in the back face of the support, and the end portion of one arm of the spring support is embedded in the groove in the back face of the support.
The quick response wire clamp based on the piezoelectric actuator is characterized in that spring copper sleeves are padded at two ends of a compression spring, and the pretightening force of the compression spring is smaller than the driving force generated by the deformation of the piezoelectric actuator.
The quick response wire clamp based on the piezoelectric actuator comprises piezoelectric ceramics for generating deformation and a retainer for pre-tightening and restricting the deformation direction, and two end faces of the piezoelectric ceramics are fixedly connected to bosses on the inner side of the retainer respectively.
The utility model discloses the beneficial effect who brings is: 1. the wire clamp is opened and closed by controlling the expansion and contraction of the piezoelectric actuator and the elastic deformation of the compression spring, and the wire clamp can be quickly opened and closed due to the fact that the piezoelectric actuator has the advantages of being short in response time and high in movement speed. 2. The pretightening force of the compression spring can be conveniently adjusted through the spring adjusting nut, so that the closing force of the wire clamp can be adjusted, and the wire clamp can be suitable for switching gold wires with different diameters. 3. Light in weight, simple structure easily changes the fastener body that receives the gold wire wearing and tearing.
Drawings
Fig. 1 is the utility model relates to a quick response fastener structure chart for automatic wedge bonding machine.
Fig. 2 is a rear view of fig. 1.
Fig. 3 is a structural schematic diagram of the stent.
Fig. 4 is a schematic structural view of a spring support.
Fig. 5 is a schematic structural view of the wire clamp body.
Fig. 6 is a schematic structural view of the wire clamp fixing seat.
In the figure: 1-support, 2-piezoelectric actuator mounting base, 3-rotating shaft, 4-wire clamp fixing base, 5-piezoelectric actuator, 6-second screw, 7-first screw, 8-spring support, 9-spring copper sleeve, 10-compression spring, 11-spring adjusting nut, 12-wire clamp body, 13-transducer fixing block, 14-transducer, 15-chopper, 16-gold wire and 17-groove.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
A quick response wire clamp based on a piezoelectric actuator comprises a support 1, a wire clamp fixing seat 4, a wire clamp body 12, a compression spring 10 and the piezoelectric actuator 5.
The structure of the support 1 is as shown in fig. 1, fig. 2 and fig. 3, a first strip-shaped notch and a second strip-shaped notch are arranged on the main body of the support 1, the first strip-shaped notch can be connected with the main body of the bonding machine through two screws, the second strip-shaped notch is connected with the piezoelectric actuator mounting seat 2 through one screw and two positioning pins, one end of the piezoelectric actuator 5 is connected onto the piezoelectric actuator mounting seat 2, the piezoelectric actuator 5 comprises piezoelectric ceramics for generating deformation and a retainer for pre-tightening and restricting the deformation direction, two end faces of the piezoelectric ceramics are respectively and fixedly connected to a boss on the inner side of the retainer, and a groove 17 is further arranged on the back face of the support 1.
A frame with an opening at one side is arranged above the right end of a main body of the bracket 1, rotating shaft mounting holes are formed in the front frame and the rear frame of the frame, the upper end of the wire clamp fixing seat 4 is a frame with an opening at one side, step holes are formed in the front frame and the rear frame of the frame, bearings are arranged in the step holes, the frame at the upper end of the wire clamp fixing seat 4 is positioned in the frame above the right end of the bracket 1, the step holes are coaxial with the rotating shaft mounting holes, a horizontal rotating shaft 3 penetrates through the rotating shaft mounting holes and leans against an inner ring of the bearing, the rotating shaft 3 serves as a rotating fulcrum shaft of the wire clamp fixing seat 4, one end, leaning against the inner ring of the bearing, of the rotating shaft 3 is conical, threaded holes perpendicular to the rotating shaft mounting holes are formed in the end portions of the front frame and the rear frame of the bracket 1, a set screw is used for penetrating through the threaded holes, and the top end of the set screw abuts against the cylindrical outer surface of the rotating shaft; the wire clamp body 12 is installed at the lower end of the wire clamp fixing seat 4, a avoiding gap is formed in the top of the wire clamp body 12, a avoiding gap is formed in the bottom of the wire clamp fixing seat 4, and a gap for the tip end of the transducer to penetrate through is formed between the wire clamp body 12 and the wire clamp fixing seat 4; two clearance holes are symmetrically arranged on the front side and the rear side of the position avoiding notch in the top of the wire clamp body 12, two threaded holes are symmetrically arranged on the front side and the rear side of the position avoiding notch in the bottom of the wire clamp fixing seat 4, screws are connected with the threaded holes through the clearance holes, and the mounting surfaces of the wire clamp fixing seat 4 and the wire clamp body 12 are concave platforms lower than the surface of the wire clamp fixing seat. A second clearance hole is formed in the wire clamp fixing seat 4, a second screw 6 penetrates through the second clearance hole to be connected with the other end of the piezoelectric actuator 5, and a distance is formed between the head of the second screw 6 and the wire clamp fixing seat 4.
The structure of the spring support 8 is as shown in fig. 4, the spring support is an L-shaped structure, one end of one arm of the spring support 8 is embedded and fixed in a groove 17 on the back of the support, the other arm of the fixed spring support 8 is positioned on the right side of the wire clamp fixing seat 4, the other arm of the spring support 8 is provided with a first clearance hole, the wire clamp fixing seat 4 is provided with a threaded hole, the left end of the first screw 7 is fixed in the threaded hole, the right end of the first screw 7 penetrates through the first clearance hole, the compression spring 10 is sleeved on a screw rod of the first screw 7 positioned on the right side of the first clearance hole, spring copper sleeves 9 are further padded at two ends of the compression spring 10, a spring adjusting nut 11 for adjusting the pretightening force of the compression spring is arranged at the right end of the first screw 7, and the pretightening force of the compression spring 10 is smaller than the driving force generated by the deformation of the piezoelectric actuator 5.
Claims (7)
1. The utility model provides a quick response fastener based on piezoelectric actuator which characterized in that: comprises a bracket (1), a wire clamp fixing seat (4), a wire clamp body (12), a compression spring (10) and a piezoelectric actuator (5);
a frame with an opening at one side is arranged above the right end of the bracket (1), rotating shaft mounting holes are formed in the front frame and the rear frame of the frame, the upper end of the wire clamp fixing seat (4) is a frame with an opening at one side, step holes are formed in the front frame and the rear frame of the frame, bearings are mounted in the step holes, the frame at the upper end of the wire clamp fixing seat (4) is positioned in the frame above one end of the bracket (1), the step holes are coaxial with the rotating shaft mounting holes, the horizontal rotating shaft (3) penetrates through the rotating shaft mounting holes and leans against the inner ring of the bearings, and the rotating shaft (3) serves as a rotating fulcrum shaft of the wire clamp fixing seat (4); the wire clamp body (12) is installed at the lower end of the wire clamp fixing seat (4), the top of the wire clamp body (12) is provided with a avoiding gap, the bottom of the wire clamp fixing seat (4) is provided with a avoiding gap, and a gap for the tip end of the transducer to pass through is formed between the wire clamp body (12) and the wire clamp fixing seat (4);
the support (1) is further provided with a spring support (8) and a piezoelectric actuator (5), the spring support (8) is of an L-shaped structure, one end of one arm of the spring support (8) is connected with the support (1), the other arm of the spring support (8) is positioned on the right side of the wire clamp fixing seat (4), the other arm of the spring support (8) is provided with a first clearance hole, the wire clamp fixing seat (4) is provided with a threaded hole, the left end of a first screw (7) is fixed at the threaded hole, the right end of the first screw (7) penetrates through the first clearance hole, a compression spring (10) is sleeved on a screw rod of the first screw (7) on the right side of the first clearance hole, and a spring adjusting nut (11) for adjusting the pre-tightening force of the compression spring is arranged at the end part of the right end of the first screw (7); one end of the piezoelectric actuator (5) is connected to the support, a second clearance hole is formed in the wire clamp fixing seat (4), a second screw (6) penetrates through the second clearance hole to be connected with the other end of the piezoelectric actuator (5), and a distance is formed between the head of the second screw (6) and the wire clamp fixing seat (4).
2. The piezoelectric actuator based fast response wire clamp of claim 1, wherein: the tip of the preceding frame of support (1) frame and back frame is equipped with the screw hole of perpendicular to pivot mounting hole, and holding screw is used for passing the screw hole, the holding screw top with pivot cylinder surface butt.
3. A piezoelectric actuator based fast response wire clamp as claimed in claim 1 or 2, wherein: the main body of the support (1) is provided with a first strip-shaped notch and a second strip-shaped notch, the first strip-shaped notch is connected with the main body of the bonding machine equipment through two screws, the second strip-shaped notch is connected with the piezoelectric actuator mounting seat (2) through one screw and two positioning pins, and one end of the piezoelectric actuator (5) is connected to the piezoelectric actuator mounting seat (2) on the support (1).
4. A piezoelectric actuator based fast response wire clamp as claimed in claim 1 or 2, wherein: two clearance holes are symmetrically arranged on the front side and the rear side of the top clearance gap of the wire clamp body (12), two threaded holes are symmetrically arranged on the front side and the rear side of the bottom clearance gap of the wire clamp fixing seat (4), screws are connected with the threaded holes through the clearance holes, and the wire clamp fixing seat (4) and the installation surface of the wire clamp body are concave platforms lower than the surface of the wire clamp fixing seat.
5. A piezoelectric actuator based fast response wire clamp as claimed in claim 1 or 2, wherein: the back of the bracket (1) is provided with a groove, and the end part of one arm of the spring bracket (8) is embedded in the groove on the back of the bracket.
6. A piezoelectric actuator based fast response wire clamp as claimed in claim 1 or 2, wherein: spring copper sleeves (9) are padded at two ends of the compression spring (10), and the pretightening force of the compression spring is smaller than the driving force generated by the deformation of the piezoelectric actuator (5).
7. A piezoelectric actuator based fast response clamp as claimed in claim 1 or 2, wherein: the piezoelectric actuator (5) comprises piezoelectric ceramics for generating deformation and a retainer for pre-tightening and restricting the deformation direction, and two end faces of the piezoelectric ceramics are respectively fixedly connected with a boss on the inner side of the retainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161533.0U CN218004775U (en) | 2022-08-17 | 2022-08-17 | Quick response wire clamp based on piezoelectric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222161533.0U CN218004775U (en) | 2022-08-17 | 2022-08-17 | Quick response wire clamp based on piezoelectric actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218004775U true CN218004775U (en) | 2022-12-09 |
Family
ID=84319808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222161533.0U Active CN218004775U (en) | 2022-08-17 | 2022-08-17 | Quick response wire clamp based on piezoelectric actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218004775U (en) |
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2022
- 2022-08-17 CN CN202222161533.0U patent/CN218004775U/en active Active
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