Tool clamp for lead bonding of multi-surface three-dimensional structure device

Abstract

The utility model discloses a work fixture for lead bonding of a polyhedral three-dimensional structure device, which is structurally characterized in that a large U-shaped groove and a small U-shaped groove are formed in the center of a base, a U-shaped plate is arranged in the large U-shaped groove, two connecting rods I symmetrically penetrate through connecting rod mounting holes in the side wall of the U-shaped plate and the side wall of the adjacent large U-shaped groove, and a first handle is arranged at the end part of one connecting rod I; first sliding blocks are symmetrically arranged on the two side walls of the U-shaped plate, and ball screws are installed in the screw installation holes. The middle of a connecting rod II penetrates through the center of the bottom of the U-shaped plate, a supporting block is arranged at the upper end of the connecting rod II, a polyhedral three-dimensional structure device is arranged on the supporting block, and a second handle is installed at the lower end of the connecting rod II and located in the small U-shaped groove; a sliding block base protrudes out of the side wall of the supporting block, and a second sliding block is installed in the sliding block base. And four groups of bead screws are uniformly mounted around the center of the bottom of the U-shaped plate at intervals. The multi-surface three-dimensional structure device lead bonding tool has strong practicability, the device is convenient to clamp and overturn, and the multi-surface three-dimensional structure device lead bonding efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of semiconductor device packaging, and relates to a tooling fixture used for wire bonding of multi-faceted three-dimensional structure devices. Background Art

[0002] In the field of semiconductor device packaging, wire bonding technology is widely used and is considered to be a cost-effective and flexible interconnection technology. For quadrant laser detectors, it is necessary to match multi-channel independent amplifier circuits, and the photosensitive chip also needs to occupy a certain space. In order to reduce the overall size, the device structure often adopts a multi-faceted three-dimensional design, with the photosensitive chip arranged on the top surface of the three-dimensional structure and the amplifier circuit mounted on the surrounding side walls. Although this structure can effectively save space, it is more difficult for the wire bonding process, because most of the wire bonding equipment on the market is more suitable for planar bonding or deep cavity bonding processes, and the bonding mechanism cannot be flipped in three dimensions, so it is difficult to directly achieve non-planar wire bonding. Therefore, for the wire bonding of such three-dimensional structure devices, the design of tooling and fixtures is particularly important. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] The purpose of the utility model is to provide a tooling fixture for wire bonding of multi-faceted three-dimensional structure devices, which can realize three-dimensional flipping and is suitable for wire bonding of different surfaces.

[0005] (II) Technical solution

[0006] In order to solve the above technical problems, the utility model provides a tooling fixture for lead bonding of multi-faceted three-dimensional structure devices, including a base 1, a U-shaped plate 2, a support block 3, a slider 4, a connecting rod I5, a connecting rod II6, a limit ring 7, a handle 8, a flange bearing 9, and a ball screw 10.

[0007] The slider 4 comprises a first slider symmetrically arranged on both side walls of the U-shaped plate (2) and a second slider installed in a slider seat, and the first slider and the second slider have the same structure.

[0008] The main structure of the base 1 is a cylinder with an inverted convex cavity in the center, and two U-shaped grooves, one large and one small, are cut out. The upper part of the cavity is a large U-shaped groove, and the lower part is a small U-shaped groove. A group of connecting rod mounting holes and three groups of screw mounting holes located around the connecting rod mounting holes are symmetrically opened on the two side walls of the large U-shaped groove. The connecting rod mounting hole is a step hole, and a bearing is installed in the step hole, and the connecting rod I5 passes through the bearing; the screw mounting hole is a threaded hole, and the three groups of screw mounting holes are respectively located directly below the connecting rod mounting hole and on the left and right sides horizontally. The cylindrical end of the ball screw is threadedly connected to the threaded hole, and the ball head end exposes the threaded hole in a free state, which is convenient for other components. For installation and avoiding air, an operating hole is opened at the end of the cylindrical end of the ball screw, and the depth of the cylindrical end screwed into the screw installation hole can be adjusted by cooperating with the tooling and the operating hole; there is a through step hole 11 on the cylindrical surfaces on the left and right sides of the base, the large hole diameter of the step hole is φ9.5, and the small hole diameter is φ8, and there are 3 through M4 screw holes 12 around the step hole 11, and these 3 screw holes 12 are distributed on the circumference of φ16 of the axis of the step hole 11, and the center line of two screw holes 12 passes through the center of the step hole 11 and is parallel to the ground, and the center line of the other screw hole 12 and the step hole 11 is perpendicular to the ground.

[0009] A threaded hole is provided at the top of the side wall of the U-shaped plate 2, and a stepped through hole 13 is symmetrical on both sides at the center of the bottom. The large hole diameter of the stepped through hole 13 is φ9.5, the depth is 0.6mm, and the small hole diameter is φ8. There are 4 M4 screw holes 14 around the stepped through hole 13, and these 4 screw holes 14 are evenly distributed on a circle with a diameter of φ18 around the axis of the stepped through hole 13; there are two through holes on the left and right side walls of the U-shaped plate 2, the diameter of the through hole 15 close to the top is φ4, and the diameter of the other through hole 16 is φ3, and the center distance between the two holes is 8mm; there is an M4 screw hole 17 vertically downward at the top of both sides of the U-shaped plate 2, which is connected with the φ4 through hole 15.

[0010] The support block 3 consists of two steps. The upper step 18 is cylindrical with a through M4 screw hole 19 on the side. The lower step 20 is cylindrical with a raised side. There is a φ3 through hole 21 vertically downward at the top of the raised part. There is a φ6 blind hole at the bottom of the lower step 20 that is coaxial with the upper step. The hole depth is 8mm and the center distance between it and the φ3 through hole 21 is 9mm.

[0011] The bottom of the slider 4 is a disc cut on both sides, the diameter of the disc is 8mm, the bottom end surface of the disc is a spherical surface 22 protruding outward, the diameter of the ball is 10mm, and the center of the spherical surface 22 has a spherical groove 23 with a diameter of 1.3mm. The depth of the groove 23 is 0.5mm. The upper part of the slider is a cylindrical boss 24 with a diameter of φ3 and a height of 5mm.

[0012] The connecting rod I5 is composed of three concentric cylinders, the large cylinder 25 is φ6.5 and 1.5 mm long, the middle cylinder 26 is φ4 and 20 mm long, the smallest cylinder 27 is M3 threaded and 5 mm long, and its end face chamfer is C0.5. The middle part of the connecting rod II (6) passes through the bottom center of the U-shaped plate (2), and the connecting rod II6 is also composed of three concentric cylinders, the middle part is matched with the bottom center of the U-shaped plate (2) through a bearing, the large cylinder 28 is φ6 and 11 mm long, and its end face chamfer is C0.5, the middle cylinder 29 is φ4 and 11 mm long, and the smallest cylinder 30 is M3 threaded and 5 mm long, and its end face chamfer is C0.5.

[0013] The connecting rod I (5) is sleeved with a limiting ring (7), which is clamped between the bearing in the connecting rod mounting hole and the side wall of the U-shaped plate (2). The limiting ring 7 has an outer diameter of φ6, an inner diameter of φ4, and a height of 2.4 mm. The handle 8 has an outer diameter of φ10, and an M4 screw hole is provided at the center of one end face of the handle, and the screw hole has a depth of 6 mm.

[0014] The flange diameter of the flange bearing 9 is φ9.2, the flange thickness is 0.6mm, the bearing outer diameter is φ8, the inner diameter is φ4, and the bearing part is 2.4mm thick. The cylindrical surface of the ball screw 10 is M4 thread, the thread length is 8mm, the ball head part has a ball diameter of 2.5mm, and the exposed height of the ball head in the free state is 0.8mm. The ball screw 10 has a spring structure inside, and compression can be achieved by pressing the ball head part.

[0015] The support block (3) is a variable diameter cylinder, the upper end of which is a small diameter cylinder and the lower end is a large diameter cylinder. A threaded hole is radially opened on the upper part of the small diameter cylinder, and a group of ball screws are installed in the threaded hole; a slider seat protrudes from the side wall of the support block (3), and a second slider is installed in the slider seat; a ball screw 10 is installed in the side screw hole 19 of the support block 3, and the ball head of the ball screw 10 is slightly higher than the side cylindrical surface. The φ3 through hole 21 of the support block 3 is tightly matched with the φ3 cylindrical boss 24 of the slider 4, and the φ6 blind hole at the bottom of the support block 3 is tightly matched with the φ6 cylindrical surface 28 of the connecting rod II6, and the end of the connecting rod II6 contacts the bottom surface of the φ6 blind hole of the support block 3. The bottom center of the U-shaped plate (2) is all around. Four groups of ball-end screws 10 are evenly spaced; a flange bearing 9 is installed on each side of the step through hole 13 at the bottom of the U-shaped plate 2, and the flange bearing 9 is tightly fitted with the step hole 13, and a ball-end screw 10 is installed at each of the four M4 screw holes 14 around it, and the ball head of the ball-end screw 10 is slightly higher than the upper surface 31 of the bottom of the U-shaped plate 2, and the φ3 circular holes 18 on the two side walls of the U-shaped plate 2 are tightly fitted with the φ3 cylindrical bosses 24 of the slider 4, and the disc plane 32 of the slider is in contact with the outer wall 32 of the U-shaped plate 2; the connecting rod II6 passes through the flange bearing 9 installed at the bottom of the U-shaped plate 2 and is tightly fitted, and the step surface 33 of the connecting rod II6 is in contact with the surface of the flange bearing 9 on the U-shaped plate 2. Two flange bearings 9 are installed at the step holes 11 on both sides of the base 1, and the flange bearings 9 are tightly matched with the step holes 11. Ball screws 10 are installed at the three M4 screw holes 12 on both sides, and the ball heads of the ball screws 10 are slightly higher than the inner surface of the base; the connecting rod I5 passes through the φ4 round hole 15 of the U-shaped plate 2, the limit ring 7 and the flange bearing 9 on the base, and is tightly matched with the flange bearing 9. The connecting rod I5 and the U-shaped plate 2 are tightened by screws 34; a handle 8 is installed at the ends of the connecting rod I5 and the connecting rod II6 through threaded connection for the control of the clamp.

[0016] The distance between the connecting rod I5 and the first slider is equal to the distance between the connecting rod mounting hole and the screw mounting hole; the distance between the connecting rod II6 and the second slider is equal to the distance between the bottom center of the U-shaped plate 2 and the surrounding ball screws.

[0017] Every time the handle is rotated 890°, under the elastic force of the internal spring of the ball screw 10 at the corresponding position, the slider groove 25 engages with the ball head of the ball screw 10, thereby achieving positioning after flipping. When the handle 8 is rotated again, the slider 4 is separated from the ball head under the action of the spring elastic force.

[0018] The limiting ring 7 is used to limit the sliders 4 on the left and right sides of the U-shaped plate 2 to ensure that there is a fixed gap of about 0.2 mm between the spherical end of the slider 4 and the left and right side walls 38 of the base 1.

[0019] The step surface 33 on the connecting rod II6 contacts and limits the flange bearing 9 to ensure that there is a fixed gap of about 0.2 mm between the spherical end of the slider 4 installed on the support block 3 and the upper surface 31 of the bottom of the U-shaped plate 2.

[0020] The ball screw 10 installed on the base 1 and the U-shaped plate 2 can freely adjust the protruding height of the ball head by screwing in the depth of the external thread, and then the embedding depth of the ball head and the slider groove 25 can be adjusted to ensure that the fitting resistance is moderate, which can easily realize free flipping and effective positioning after flipping.

[0021] The support block 3 is used for installing the device. The ball screw 10 on its side can freely adjust the protruding height of the ball head by screwing in the depth of the external thread, thereby realizing the size of the tightening force applied by the ball head on the inner wall of the device.

[0022] The connecting rod I5, the connecting rod II6, the ball screw 10 and the slider 4 are made of stainless steel to improve the wear resistance during use and thus extend the service life of the clamp. The remaining parts are made of aluminum alloy to reduce the overall weight of the clamp and facilitate the movement and flipping of the clamp.

[0023] (III) Beneficial effects

[0024] The tooling fixture for wire bonding of multi-faceted three-dimensional structure devices provided by the above technical solution can realize multi-directional three-dimensional flipping of the device by operating the handle, thereby realizing wire bonding between different planes of the multi-faceted three-dimensional structure device. The utility model is simple and quick to operate, has strong practicality, is convenient for device clamping and flipping, and can effectively improve the wire bonding efficiency of multi-faceted three-dimensional structure devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-dimensional model structure of the tooling fixture of the embodiment of the utility model.

[0026] Figure 2 This is a cross-sectional view of the three-dimensional model of the tooling fixture of the embodiment of the utility model.

[0027] Figure 3 This is a three-dimensional model of the fixture base of the embodiment of the utility model.

[0028] Figure 4 and Figure 5 They are three-dimensional model diagrams of two different states of the tooling fixture support block of an embodiment of the utility model.

[0029] Figure 6 This is a three-dimensional model of the U-shaped plate of the tooling fixture in the embodiment of the utility model.

[0030] Figure 7 and Figure 8They are three-dimensional model diagrams of the slider of the tooling fixture in two different states according to the embodiment of the utility model.

[0031] Fig. 9 This is a three-dimensional model of the fixture connecting rod I of the embodiment of the utility model.

[0032] Fig.10 This is the three-dimensional model of the fixture connecting rod II of the embodiment of the utility model. DETAILED DESCRIPTION

[0033] In order to make the purpose, content and advantages of the utility model clearer, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments.

[0034] Reference Figures 1 to 10 As shown, the tooling fixture for wire bonding of multi-faceted three-dimensional structure devices of the utility model includes a base 1, a U-shaped plate 2, a support block 3, a slider 4, a connecting rod I5, a connecting rod II6, a limiting ring 7, a handle 8, a flange bearing 9, and a ball screw 10.

[0035] Reference Figure 2 , Figure 3 Two U-shaped grooves, one large and one small, are cut inside the base 1 to facilitate the installation of other components and avoid air. There is a through step hole 11 on the cylindrical surfaces on the left and right sides of the base. The diameter of the large hole of the step hole is φ9.5, and the diameter of the small hole is φ8. There are 3 through M4 screw holes 12 around the step hole 11. These 3 screw holes 12 are distributed on the circumference of φ16 of the axis of the step hole 11. The center line of the two screw holes 12 passes through the center of the step hole 11 and is parallel to the ground. The center line of the other screw hole 12 and the step hole 11 is perpendicular to the ground.

[0036] Reference Figure 2 , Figure 6 There is a stepped through hole 13 symmetrical on both sides at the bottom center of the U-shaped plate 2. The large hole diameter of the stepped through hole 13 is φ9.5, the depth is 0.6mm, and the small hole diameter is φ8. There are 4 M4 screw holes 14 around the stepped through hole 13. These 4 screw holes 14 are evenly distributed on a circle with a diameter of φ18 around the axis of the stepped through hole 13; there are two through holes on the left and right side walls of the U-shaped plate 2, the diameter of the through hole 15 close to the top is φ4, and the diameter of the other through hole 16 is φ3, and the center distance between the two holes is 8mm; there is an M4 screw hole 17 vertically downward from the top on both sides of the U-shaped plate 2, which is connected with the φ4 through hole 15.

[0037] Reference Figure 2 , Figure 4 , Figure 5The support block 3 consists of two steps. The upper step 18 is cylindrical with a through M4 screw hole 19 on the side. The lower step 20 is a column with a protrusion on the side. There is a φ3 through hole 21 vertically downward from the top of the protrusion. There is a φ6 blind hole at the bottom of the lower step 20 that is coaxial with the upper step. The hole depth is 8mm and the center distance between it and the φ3 through hole 21 is 9mm.

[0038] Reference Figure 2 , Figure 7 , Figure 8 The bottom of the slider 4 is a disc cut on both sides, the diameter of the disc is 8mm, the bottom end surface of the disc is a spherical surface 22 protruding outward, the ball diameter is 10mm, and there is a spherical groove 23 with a ball diameter of 1.3mm in the center of the spherical surface 22. The depth of the groove 23 is 0.5mm. The upper part of the slider is a cylindrical boss 24 with a diameter of φ3 and a height of 5mm.

[0039] Reference Figure 2 , Fig. 9 , Fig.10 , connecting rod I5 is composed of three concentric cylinders, the large cylinder 25 is φ6.5, 1.5mm long, the middle cylinder 26 is φ4, 20mm long, the smallest cylinder 27 has M3 thread, 5mm long, and its end face chamfer is C0.5. Connecting rod II6 is also composed of three concentric cylinders, the large cylinder 28 is φ6, 11mm long, and its end face chamfer is C0.5, the middle cylinder 29 is φ4, 11mm long, and the smallest cylinder 30 has M3 thread, 5mm long, and its end face chamfer is C0.5.

[0040] Reference Figure 2 , the limit ring 7 has an outer diameter of φ6, an inner diameter of φ4, and a height of 2.4mm; the handle 8 as mentioned above has an outer diameter of φ10, and there is an M4 screw hole in the center of one end face of the handle, and the screw hole depth is 6mm; the flange diameter of the flange bearing 9 as mentioned above is φ9.2, the flange thickness is 0.6mm, the bearing outer diameter is φ8, the inner diameter is φ4, and the bearing part is 2.4mm thick; the cylindrical surface of the ball-end screw 10 as mentioned above is M4 thread, the thread length is 8mm, the ball head part has a ball diameter of 2.5mm, and the exposed height of the ball head in the free state is 0.8mm. The ball-end screw 10 has a spring structure inside, and compression can be achieved by pressing the ball head part.

[0041] Reference Figure 1 — Fig.10A ball screw 10 is installed in the side screw hole 19 of the support block 3, and the ball head of the ball screw 10 is slightly higher than the side cylindrical surface. The φ3 through hole 21 of the support block 3 is tightly matched with the φ3 cylindrical boss 24 of the slider 4. The φ6 blind hole at the bottom of the support block 3 is tightly matched with the φ6 cylindrical surface 28 of the connecting rod II6, and the end of the connecting rod II6 is in contact with the bottom surface of the φ6 blind hole of the support block 3; a flange bearing 9 is installed on each side of the step through hole 13 at the bottom of the U-shaped plate 2, and the flange bearing 9 is tightly matched with the step hole 13. A ball screw 10 is installed at each of the four M4 screw holes 14 around it, and the ball head of the ball screw 10 is slightly higher than the upper surface 31 of the bottom of the U-shaped plate 2. The φ3 circular holes 18 on the two side walls of the U-shaped plate 2 are tightly matched with the φ3 cylindrical boss 24 of the slider 4, and the disc plane 32 of the slider is in contact with the outer wall 32 of the U-shaped plate 2; the connecting rod II6 passes through the flange bearing 9 installed at the bottom of the U-shaped plate 2 and is tightly matched, and the step surface 33 of the connecting rod II6 is in contact with the surface of the flange bearing 9 on the U-shaped plate 2. Two flange bearings 9 are installed at each of the step holes 11 on the two sides of the base 1, and the flange bearing 9 is tightly matched with the step holes 11. The three M4 screw holes 12 on both sides are respectively installed with ball screws 10, and the ball heads of the ball screws 10 are slightly higher than the inner surface of the base; the connecting rod I5 successively passes through the φ4 circular hole 15 of the U-shaped plate 2, the limit ring 7 and the flange bearing 9 on the base, and is tightly matched with the flange bearing 9. The connecting rod I5 and the U-shaped plate 2 are tightened by screws 34; a handle 8 is installed at the end of the connecting rod I5 and the connecting rod II6 through threaded connection for controlling the clamp.

[0042] Every time the handle is rotated 890°, under the elastic force of the internal spring of the ball screw 10 at the corresponding position, the slider groove 25 engages with the ball head of the ball screw 10, thereby achieving positioning after flipping. When the handle 8 is rotated again, the slider 4 is separated from the ball head under the action of the spring elastic force.

[0043] Reference Figure 1 , Figure 2 The limiting ring 7 is used to limit the sliders 4 on the left and right sides of the U-shaped plate 2 to ensure that there is a fixed gap of about 0.2 mm between the spherical end of the slider 4 and the left and right side walls 38 of the base 1.

[0044] Reference Figure 2 , Figure 6 The step surface 33 on the connecting rod II6 contacts and limits the flange bearing 9 to ensure that there is a fixed gap of about 0.2 mm between the spherical end of the slider 4 installed on the support block 3 and the upper surface 31 of the bottom of the U-shaped plate 2.

[0045] Reference Figure 2 , Fig. 9The ball screw 10 installed on the base 1 and the U-shaped plate 2 can freely adjust the protruding height of the ball head by screwing in the depth of the external thread, and then the embedding depth of the ball head and the slider groove 25 can be adjusted to ensure that the fitting resistance is moderate, which can easily realize free flipping and effective positioning after flipping.

[0046] Reference Figure 2 The support block 3 is used for installing the device, and the ball screw 10 on its side can freely adjust the protruding height of the ball head by screwing in the depth of the external thread, thereby realizing the size of the tightening force applied by the ball head on the inner wall of the device.

[0047] Reference Figure 2 The connecting rod I5, the connecting rod II6, the ball screw 10 and the slider 4 are made of stainless steel to improve the wear resistance during use and thus extend the service life of the clamp. The remaining parts are made of aluminum alloy to reduce the overall weight of the clamp and facilitate the movement and flipping of the clamp.

[0048] Taking a multi-faceted three-dimensional structure device with a cylindrical cavity at the bottom as an example, the specific usage of the utility model is described as follows:

[0049] The bottom cavity of the device is fitted on the support block 3, and the ball head of the ball screw 10 is compressed inward by gently pressing the device downward. The reaction force of the spring inside the ball screw 10 makes the ball head press against the inner wall of the device to prevent the device from falling during the flipping process. The lower surface of the device contacts the step surface 35 to achieve the vertical downward limit of the device. Two adjacent pins of the device are in close contact with the surface 36 and surface 37 of the support block 3 to achieve the circumferential limit of the device to prevent the device from rotating around the support block at will after installation. By rotating the handle 8 on the connecting rod I5, the connecting rod I5 will be driven to rotate, and the connecting rod I5 will drive the U-shaped plate 2 to rotate, thereby driving the device to complete the vertical flip. Every 90° rotation, the ball head of the ball screw 10 at the corresponding position is smoothly embedded in the groove 23 of the slider 4 under the pressure of the internal spring, achieving effective positioning after the device is flipped. Vertical flipping can achieve wire bonding between the top surface and the side surface of the device; similarly, by rotating the handle 8 on the connecting rod II6, the device can be flipped horizontally, thereby achieving wire bonding on the four sides of the device. In this way, by rotating the two handles 8, wire bonding between five mutually perpendicular planes of the device can be achieved.

[0050] The structure of the support block 3 can be adjusted according to the specific structural dimensions of the device. This embodiment is only for a certain multi-faceted three-dimensional structure device in actual use, and does not limit the patent scope of the utility model. All equivalent structural exchanges made using the contents of the utility model specification and drawings are also included in the patent protection scope of the utility model. The ball screw 10 and the flange bearing 9 are standard components.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fixture for wire bonding of multi-faceted three-dimensional structure devices, characterized in that: include: A base (1), a U-shaped plate (2), a support block (3), a first slider, a second slider, a connecting rod I (5), and a connecting rod II (6); The base (1) is a cylinder with an inverted convex cavity in the center, the upper part of the cavity is a large U-shaped groove, and the lower part is a small U-shaped groove. The U-shaped plate (2) is arranged in the large U-shaped groove. A group of connecting rod mounting holes and three groups of screw mounting holes located around the connecting rod mounting holes are symmetrically arranged on the two side walls of the large U-shaped groove. Two connecting rods I (5) symmetrically pass through the connecting rod mounting holes on the side walls of the U-shaped plate (2) and the adjacent large U-shaped groove side walls. A first handle is provided at the end of one connecting rod I (5); first sliding blocks are symmetrically arranged on the two side walls of the U-shaped plate (2), and ball screws are installed in the screw mounting holes. The middle part of the connecting rod II (6) passes through the bottom center of the U-shaped plate (2); a support block (3) is arranged at the upper end of the connecting rod II (6); a multi-faceted three-dimensional structure device is arranged on the support block (3); a second handle is installed at the lower end of the connecting rod II (6); the second handle is located in the small U-shaped groove; a slider seat protrudes from the side wall of the support block (3); a second slider is installed in the slider seat; four sets of ball screws are evenly spaced around the bottom center of the U-shaped plate (2); The distance between the connecting rod I (5) and the first slider is equal to the distance between the connecting rod mounting hole and the screw mounting hole; the distance between the connecting rod II (6) and the second slider is equal to the distance between the bottom center of the U-shaped plate (2) and the surrounding ball screws.

2. The fixture for wire bonding of multi-faceted three-dimensional structure devices according to claim 1, characterized in that: The connecting rod mounting hole is a stepped hole, a bearing is mounted in the stepped hole, and the connecting rod 1 (5) passes through the bearing.

3. The fixture for wire bonding of multi-faceted three-dimensional structure devices according to claim 2, characterized in that: The screw mounting hole is a threaded hole. The cylindrical end of the ball screw is threadedly connected to the threaded hole. The ball head end is exposed from the threaded hole in a free state. A spring structure is provided inside the ball screw. When the ball head is pressed, the spring structure is compressed.

4. The fixture for wire bonding of multi-faceted three-dimensional structure devices according to claim 3, characterized in that: A threaded hole is provided at the top of the side wall of the U-shaped plate (2), and a screw is inserted into the threaded hole to tighten the connecting rod I (5) passing through the side wall of the U-shaped plate (2).

5. The fixture for wire bonding of multi-faceted three-dimensional structure devices according to claim 4, characterized in that: The connecting rod I (5) is sleeved with a limiting ring (7), which is clamped between the bearing in the connecting rod mounting hole and the side wall of the U-shaped plate (2), so as to achieve a fixed gap between the spherical end of the slider (4) and the left and right side walls of the base (1).

6. The fixture for wire bonding of multi-faceted three-dimensional structure devices according to claim 5, characterized in that: The support block (3) is a variable diameter column, the upper end of which is a small diameter column and the lower end is a large diameter column. A threaded hole is radially opened on the upper part of the small diameter column, and a group of ball screws are installed in the threaded hole.

7. The fixture for wire bonding of multi-faceted three-dimensional structure devices according to claim 6, characterized in that: The middle part of the connecting rod II (6) is matched with the bottom center of the U-shaped plate (2) through a bearing.

8. The fixture for wire bonding of multi-faceted three-dimensional structure devices according to claim 7, characterized in that: The first slider and the second slider have the same structure. The bottom is a disc with two sides cut. The bottom end surface of the disc is a spherical surface protruding outwards. There is a spherical groove in the center of the spherical surface. The upper part of the slider is a cylindrical boss, which is installed in the side wall of the U-shaped plate (2) or in the support block (3).

9. The fixture for wire bonding of multi-faceted three-dimensional structure devices according to claim 8, characterized in that: On the two side walls of the large U-shaped groove of the base (1), three groups of screw mounting holes are respectively located directly below the connecting rod mounting hole and on the left and right sides horizontally.

10. The fixture for wire bonding of multi-faceted three-dimensional structure devices according to claim 9, characterized in that: The ball screw installed on the base (1) and the U-shaped plate (2) has an operating hole at the end of the cylindrical end. The depth of the cylindrical end screwed into the screw installation hole can be adjusted by cooperating with the tooling and the operating hole.

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