Clamping jaw assembly, pressing mechanism and wire bonding machine

Abstract

The utility model provides a kind of clamping jaw assembly, pressing mechanism and wire bonding machine, in the clamping jaw assembly, the mounting hole is equipped on the clamping seat, the pressure ball is placed in the mounting hole;The clamping block is rotatably installed on the clamping seat by first pivot, the first end of the clamping block is used to be connected with the pressure ball, the second end of the clamping block is connected with the clamping seat by the elastic member;The position corresponding to the mounting hole of the first end of the clamping block is equipped with limiting structure, and the limiting structure is used to limit the pressure ball.When clamping segment is connected with pressure ball by moving downward, limiting structure will move to between mounting hole and pressure ball with clamping segment, will give pressure ball a lateral force, so that pressure ball is always positioned, realize limiting pressure ball, so as to limit the position of pressure ball, so that pressure ball does not move in mounting hole, prevent pressure ball to drive the workpiece to be pressed to move, solve the problem of die wafer partial welding.

Description

Technical Field

[0001] This utility model relates to the field of gripper assembly technology, and in particular to a gripper assembly, a pressing mechanism and a wire bonding machine. Background Technology

[0002] In the wafer bonding process, the quality of wafer clamping and positioning affects the stability of the bonding wire. Existing clamping mechanisms include a base with a gripper assembly on it, used to clamp and fix the clamping plate. Most commercially available gripper assemblies use a ball-shaped clamping element placed in a mounting hole. The ball moves downwards to press the workpiece. This requires a clearance between the ball and the mounting hole to ensure proper downward movement. However, vibrations generated during operation can cause the ball to move within the mounting hole, leading to movement of the workpiece and potentially causing wafer misalignment. Summary of the Invention

[0003] This invention provides a gripper assembly, a pressing mechanism, and a wire bonding machine to solve the problem of wafer misalignment caused by existing gripper assemblies during use.

[0004] A gripper assembly includes a gripper base, a pressure ball, a gripping block, and an elastic element; The clamp is provided with a mounting hole, and the pressure ball is placed in the mounting hole; The clamping block is rotatably mounted on the clamping seat via a first rotating shaft. The first end of the clamping block is used to connect with the pressure ball, and the second end of the clamping block is connected to the clamping seat via the elastic element. The first end of the clamping block is provided with a limiting structure at the position corresponding to the mounting hole, and the limiting structure is used to limit the pressure ball.

[0005] Preferably, the limiting structure includes one or more limiting protrusions; the multiple limiting protrusions are arranged in a ring. One end of each of the limiting protrusions is connected to the first end of the clamping block, and the second end of each of the limiting protrusions is used to be placed in the gap between the mounting hole and the pressure ball.

[0006] Preferably, the surface of each of the limiting protrusions that contacts the pressure ball is an arc-shaped concave surface.

[0007] Preferably, the gripper assembly further includes an adjustment component; The adjustment component is disposed on the second end of the clamping block and is in contact with the elastic element, and is used to adjust the compression amount of the elastic element.

[0008] Preferably, the adjusting assembly includes an adjusting bolt and an adjusting plug; The adjusting bolt is located on the second end of the clamping block and contacts the elastic element; The adjusting plug is mounted on the adjusting bolt and is located between the clamping block and the bolt cap of the adjusting bolt; Alternatively, the adjustment assembly may include an adjustment bolt and scale markings; The adjusting bolt is located on the second end of the clamping block and contacts the elastic element; The scale markings are set on the adjusting bolt along the axial direction.

[0009] Preferably, the adjusting plug includes a connecting ring and at least one plug plate mounted on the connecting ring; Each of the plug pieces has a snap-fit ​​end away from the connecting ring, the snap-fit ​​end matching the adjusting bolt, so that the plug piece is located between the clamping block and the bolt cap of the adjusting bolt.

[0010] Preferably, the gripper assembly further includes a pry bar; The pawl is disposed on the clamping seat, and the pawl contacts the second end of the clamping block to move the first end of the clamping block away from the pressure ball.

[0011] A pressing mechanism includes a base, a pressure plate, and the aforementioned gripper assembly; The pressure plate is the workpiece to be pressed; The gripper assembly is mounted on the base and is used to clamp and fix the pressure plate.

[0012] Preferably, there are two gripper assemblies, which are arranged at intervals on the base and located on opposite sides of the pressure plate.

[0013] A wire bonding machine includes the aforementioned pressing mechanism.

[0014] The gripper assembly provided in this embodiment of the utility model has a limiting structure at the first end of the clamping block, i.e., the clamping section, corresponding to the mounting hole. With this setting, when the clamping section moves downward and contacts the pressure ball, the limiting structure will move with the clamping section to the space between the mounting hole and the pressure ball, giving the pressure ball a lateral force, so that the pressure ball is always positioned on the side, thereby limiting the position of the pressure ball and preventing it from moving within the mounting hole. This prevents the pressure ball from moving the workpiece to be pressed, thus solving the problem of wafer misalignment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first isometric view of the pressing mechanism in one embodiment of the present invention; Figure 2 yes Figure 1 A sectional view; Figure 3 yes Figure 1 Sectional view at point AA; Figure 4 This is a second isometric view of the pressing mechanism in one embodiment of the present invention; Figure 5 yes Figure 3 A sectional view; Figure 6 This is an isometric view of a wire bonding machine according to one embodiment of the present invention.

[0017] The components include: 1. Clamping seat; 101. Mounting hole; 102. First connecting plate; 103. Second connecting plate; 104. Pressing block groove; 2. Pressing ball; 3. Clamping block; 31. Clamping section; 32. Force application section; 33. Receiving part; 4. Elastic element; 5. First rotating shaft; 6. Limiting structure; 7. Adjusting assembly; 71. Adjusting bolt; 72. Adjusting plug; 721. Connecting ring; 722. Plug; 723. Snap-fit ​​position; 8. Paw; 9. Base; 10. Pressure plate; 11. Second rotating shaft; 12. Support plate; 13. Washer. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0019] In the description of this application, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] This utility model embodiment provides a gripper assembly, see reference Figures 1-3 It includes a clamping seat 1, a pressure ball 2, a clamping block 3, and an elastic element 4; the clamping seat 1 is provided with a mounting hole 101, and the pressure ball 2 is placed in the mounting hole 101; the clamping block 3 is rotatably mounted on the clamping seat 1 through a first rotating shaft 5, the first end of the clamping block 3 is used to connect with the pressure ball 2, and the second end of the clamping block 3 is connected to the clamping seat 1 through the elastic element 4; a limiting structure 6 is provided at the position corresponding to the mounting hole 101 at the first end of the clamping block 3, and the limiting structure 6 is used to limit the pressure ball 2.

[0022] As an example, the gripper assembly is a structure in the pressing mechanism used to clamp and fix the workpiece to be pressed (pressure plate 10); specifically, it includes a clamping seat 1, a pressure ball 2, a clamping block 3 and an elastic element 4; the clamping seat 1 includes a first connecting plate 102 and a second connecting plate 103, the first connecting plate 102 is arranged along a first direction and is used to be mounted on the base 9, the second connecting plate 103 is arranged along a second direction, and the second connecting plate 103 is provided with a pressure block groove 104 for accommodating the clamping block 3, the second direction is perpendicular to the first direction. A mounting hole 101 is provided on the clamping base 1, which communicates with the pressure block groove 104. The pressure ball 2 is placed in the mounting hole 101. The clamping block 3 is rotatably mounted on the clamping base 1 via a first rotating shaft 5. Specifically, the clamping block 3 includes a clamping section 31 and a force-applying section 32. That is, the part where the first end of the clamping block 3 is located is the clamping section 31, and the part where the second end of the clamping block 3 is located is the force-applying section 32. The clamping section 31 is rotatably connected in the pressure block groove 104 via the first rotating shaft 5. The first end of the pressure block 3, namely the clamping section 31, is used to connect with the pressure ball 2. The second end of the clamping block 3, namely the force-applying section 32, is connected to the clamping seat 1 through the elastic element 4 (e.g., spring). An installation groove is provided on the side of the force-applying section 32 near the clamping seat 1. The elastic element 4 is installed in the installation groove. Using the elastic force of the elastic element 4, the force-applying section 32 is lifted, and the clamping section 31 rotates around the first rotating shaft 5. The clamping section 31 moves downward and connects with the pressure ball 2, so that the pressure ball 2 moves downward and presses the workpiece to be pressed. A limiting structure 6 is provided at the first end of the clamping block 3, i.e., the clamping section 31, corresponding to the mounting hole 101. This design ensures that when the clamping section 31 moves downwards and contacts the pressure ball 2, the limiting structure 6 moves with the clamping section 31 to the space between the mounting hole 101 and the pressure ball 2, applying a lateral force to the pressure ball 2. This keeps the pressure ball 2 positioned close to the edge, thus limiting its position and preventing it from shifting within the mounting hole 101. This prevents the pressure ball 2 from moving the workpiece being pressed, solving the problem of wafer misalignment during soldering. The limiting structure 6 can be a separate structure, detachably connected to the clamping section 31 of the clamping block 3, or it can be integrally formed with the clamping block 3.

[0023] In one embodiment, reference is made to Figure 1 and Figure 3 The limiting structure 6 includes one or more limiting protrusions; the multiple limiting protrusions are distributed in a ring; one end of each limiting protrusion is connected to the first end of the clamping block 3, and the second end of each limiting protrusion is used to be placed in the gap between the mounting hole 101 and the pressure ball 2.

[0024] As an example, the structure of the limiting structure 6 can be designed according to actual needs. Firstly, the limiting structure 6 includes a limiting protrusion. One end of the limiting protrusion is connected to the first end of the clamping block 3, specifically by welding, snap-fitting, or bonding. The second end of the limiting protrusion is placed in the gap between the mounting hole 101 and the pressure ball 2. With this configuration, when the clamping section 31 moves downwards and connects with the pressure ball 2, the second end of the limiting protrusion moves with the clamping section 31 to the space between the mounting hole 101 and the pressure ball 2, providing a lateral force to the pressure ball 2. This keeps the pressure ball 2 positioned close to the edge, thus limiting its position and preventing it from shifting within the mounting hole 101. This prevents the pressure ball 2 from moving the workpiece being pressed, solving the problem of wafer misalignment.

[0025] The first type includes a limiting structure 6 comprising multiple limiting protrusions. One end of each limiting protrusion is connected to the first end of the clamping block 3, and the second end of each limiting protrusion is placed in the gap between the mounting hole 101 and the pressure ball 2. With this configuration, when the clamping section 31 moves downward and connects with the pressure ball 2, the second end of each limiting protrusion will move with the clamping section 31 to the space between the mounting hole 101 and the pressure ball 2. Each limiting protrusion will exert a lateral force on the pressure ball 2. The multiple limiting protrusions are arranged in a ring. At this time, the lateral forces exerted by the multiple limiting protrusions on the pressure ball 2 form a ring, thereby limiting the position of the pressure ball 2 from multiple directions, preventing the pressure ball 2 from moving within the mounting hole 101, preventing the pressure ball 2 from moving the workpiece to be pressed, and solving the problem of wafer misalignment.

[0026] In one embodiment, the surface of each limiting protrusion that is in contact with the pressure ball 2 is an arc-shaped concave surface.

[0027] As an example, the surface of each limiting protrusion that contacts the pressure ball 2 is an arc-shaped concave surface. This design allows the arc-shaped concave surface to naturally conform to the spherical surface of the pressure ball 2, forming surface contact rather than point contact. This expands the contact area between each limiting protrusion and the pressure ball 2, resulting in a more uniform pressure distribution. This allows for multi-directional limiting of the pressure ball 2, thereby restricting its position and preventing it from shifting within the mounting hole 101. Furthermore, the surface contact design ensures that wear is evenly distributed on the arc-shaped concave surface, avoiding structural failure caused by excessive localized wear of the pressure ball 2.

[0028] In one embodiment, reference is made to Figures 1-6 The gripper assembly also includes an adjustment component 7; the adjustment component 7 is disposed on the second end of the clamping block 3 and is in contact with the elastic element 4, and is used to adjust the compression amount of the elastic element 4.

[0029] As an example, the gripper assembly also includes an adjustment component 7. The adjustment component 7 is positioned on the second end of the clamping block 3, in contact with the elastic element 4. This configuration allows for precise control of the compression amount of the elastic element 4 by adjusting the position of the adjustment component 7 according to actual needs (for example, when the adjustment component 7 is lowered to its lowest position, the compression amount of the elastic element 4 is at its maximum, and vice versa). This adjusts the lifting force applied by the elastic element 4 to the second end of the clamping block 3, i.e., the force application section 32, thereby changing the pressure of the clamping section 31 on the pressure ball 2, which in turn changes the pressure on the workpiece to be pressed. This enables multiple pressure levels, allowing for precise adjustment of the pressing force on the workpiece to be pressed, preventing the pressing force on the workpiece from being too large or too small and affecting the use of the equipment. Moreover, the gripper assembly in this example has a simple structure, is easy to manufacture, and is conducive to large-scale promotion.

[0030] In one embodiment, reference is made to Figure 2 and Figure 6 The adjusting assembly 7 includes an adjusting bolt 71 and an adjusting plug 72; the adjusting bolt 71 is disposed on the second end of the clamping block 3 and contacts the elastic element 4; the adjusting plug 72 is mounted on the adjusting bolt 71 and is located between the clamping block 3 and the bolt head of the adjusting bolt 71; or, the adjusting assembly 7 includes an adjusting bolt 71 and a scale mark; the adjusting bolt 71 is disposed on the second end of the clamping block 3 and contacts the elastic element 4; the scale mark is disposed on the adjusting bolt 71 in the axial direction.

[0031] As an example, two structural forms of adjustment component 7 are introduced.

[0032] The first type includes an adjusting bolt 71 and an adjusting plug 72. During installation, a bolt hole is provided on the second end of the clamping block 3, i.e., the force-applying section 32. The adjusting bolt 71 is installed in the bolt hole and contacts the elastic element 4. By adjusting the raising and lowering of the adjusting bolt 71, the compression amount of the elastic element 4 is changed, thereby achieving multiple pressure levels. For example, when the adjusting bolt 71 is lowered to its lowest position, the compression amount of the elastic element 4 is the largest, and vice versa. When the adjusting bolt 71 is in the middle position, the adjusting plug 72 is installed on the adjusting bolt 71 and located between the clamping block 3 and the bolt head of the adjusting bolt 71. This allows for precise adjustment of the height of the adjusting bolt 71, thereby precisely controlling the compression of the elastic element 4. This adjusts the lifting force applied by the elastic element 4 to the second end of the clamping block 3, i.e., the force application section 32, thus changing the pressure of the clamping section 31 on the pressure ball 2, which in turn changes the pressure on the workpiece to be pressed. This allows for multiple pressure levels, enabling precise adjustment of the pressing force on the workpiece to be pressed, and preventing the pressing force on the workpiece from being too large or too small, which could affect the use of the equipment.

[0033] The second type includes an adjusting component 7 with an adjusting bolt 71 and a scale marking. During installation, a bolt hole is provided on the second end of the clamping block 3, i.e., the force-applying section 32. The adjusting bolt 71 is installed in the bolt hole and contacts the elastic element 4. By adjusting the rise and fall of the adjusting bolt 71, the compression amount of the elastic element 4 is changed, thereby achieving multiple pressure levels. The scale marking is set on the adjusting bolt 71 along the axial direction. The pressing force of the workpiece to be pressed is determined according to actual needs, and the displacement of the adjusting bolt 71 is determined. The displacement of the adjusting bolt 71 can be directly read through the scale marking to achieve precise adjustment of the height of the adjusting bolt 71, thereby precisely controlling the compression amount of the elastic element 4. This adjusts the lifting force applied by the elastic element 4 to the second end of the clamping block 3, i.e., the force-applying section 32, changing the pressure of the clamping section 31 on the pressure ball 2, which in turn changes the pressure on the workpiece to be pressed, thereby achieving multiple pressure levels. This allows for precise adjustment of the pressing force on the workpiece to be pressed, avoiding excessive or insufficient pressing force on the workpiece, which would affect the use of the equipment.

[0034] In one embodiment, reference is made to Figure 6 The adjusting plug 72 includes a connecting ring 721 and at least one plug piece 722 mounted on the connecting ring 721; each plug piece 722 has a snap-fit ​​position 723 at one end away from the connecting ring 721, the snap-fit ​​position 723 matches the adjusting bolt 71, so that the plug piece 722 is located between the clamping block 3 and the bolt cap of the adjusting bolt 71.

[0035] As an example, the adjusting plug 72 includes a connecting ring 721 and at least one plug 722 mounted on the connecting ring 721; each plug 722 has a snap-fit ​​position 723 at the end away from the connecting ring 721, which matches the adjusting bolt 71; with this configuration, the pressing force of the workpiece to be pressed is determined according to actual needs, the displacement of the adjusting bolt 71 is determined, and a corresponding number of plugs 722 are selected, and the selected plugs 722 are stacked and installed on the adjusting bolt 71 in sequence, so that the plugs 722 are located between the clamping block 3 and the bolt head of the adjusting bolt 71. This allows for precise adjustment of the height of the adjusting bolt 71, thereby precisely controlling the compression of the elastic element 4, and thus adjusting the lifting force of the elastic element 4 applied to the second end of the clamping block 3, i.e., the force application section 32, changing the pressure of the clamping section 31 on the pressure ball 2, that is, changing the pressure on the workpiece to be pressed, thereby achieving multiple pressure levels to achieve precise adjustment of the pressing force of the workpiece to be pressed, and avoiding excessive or insufficient pressing force of the workpiece to be pressed, which would affect the use of the equipment.

[0036] In one embodiment, reference is made to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6The gripper assembly also includes a pawl 8; the pawl 8 is disposed on the gripper 1 and contacts the second end of the clamping block 3, for moving the first end of the clamping block 3 away from the pressure ball 2.

[0037] As an example, the gripper assembly also includes a claw 8; during installation, the claw 8 is placed on the clamping seat 1, specifically the claw 8 is rotatably connected to the pressure block groove 104 via the second rotating shaft 11 and is located above the force application section 32; rotating the claw 8 clockwise, the claw 8 contacts the second end of the clamping block 3, that is, the claw 8 abuts against the force application section 32, so that the claw 8 can rotate around the second rotating shaft 11, pressing down the force application section 32, and the clamping section 31 rotates around the first rotating shaft 5, the clamping section 31 tilts upward, so that the first end of the clamping block 3, the clamping section 31, moves away from the pressure ball 2, releasing the clamping effect of the clamping section 31 on the pressure ball 2, thereby contacting the clamping effect on the workpiece to be pressed. The claw 8 can also be configured as a pressing structure. By pressing the claw 8, the claw 8 is brought closer to or away from the second end of the clamping block 3, that is, a lifting force or a downward force is applied to the force application section 32, causing the force application section 32 to be lifted or pressed down. The clamping section 31 rotates around the first rotating shaft 5, and the clamping section 31 presses down on the pressure ball 2, so that the pressure ball 2 presses the workpiece to be pressed, or the clamping section 31 tilts upward, releasing the clamping effect of the clamping section 31 on the pressure ball 2, thereby contacting the clamping effect on the workpiece to be pressed.

[0038] In one example, refer to Figure 4 and Figure 5 The second structural form of the clamping block 3 is introduced. A receiving part 33 is provided at the second end of the clamping block 3. The receiving part 33 extends outside the clamping seat 1 and can receive the pawl 8. With this configuration, the clamping block 3 can be rotated around the first rotating shaft 5 by rotating the pawl 8 counterclockwise or clockwise.

[0039] In one example, refer to Figure 1 and Figure 2 A support plate 12 is provided at the first end of the clamping base 1 near the clamping block 3. The workpiece to be pressed rests on the support plate 12, and the clamping section 31 abuts against the pressure ball 2. The support plate 12 and the pressure ball 2 work together to position the workpiece to be pressed. By rotating the clamping block 3, the clamping section 31 can press or release the pressure ball 2, thereby pressing or releasing the workpiece to be pressed. A groove is provided on the workpiece to be pressed, allowing the pressure ball 2 to protrude from the mounting hole 101 and engage with the groove to achieve the pressing of the workpiece.

[0040] In one example, refer to Figure 2 and Figure 5The gripper assembly also includes a washer 13. During installation, the washer 13 is placed between the adjusting assembly 7 and the elastic element 4. Specifically, the washer 13 is located between the adjusting bolt 71 and the elastic element 4. The force of the adjusting bolt 71 acts on the washer 13, and the washer 13 then acts on the elastic element 4, ensuring that the force applied by the adjusting bolt 71 to the elastic element 4 is more balanced, thus facilitating the adjustment of the compression of the elastic element 4.

[0041] This utility model embodiment provides a pressing mechanism, see reference Figures 1-6 It includes a base 9, a pressure plate 10, and a gripper assembly; the pressure plate 10 is the workpiece to be pressed; the gripper assembly is installed on the base 9 and is used to clamp and fix the pressure plate 10.

[0042] As an example, the pressing mechanism includes a base 9, a pressure plate 10, and a gripper assembly; the pressure plate 10 is the workpiece to be pressed; during installation, the gripper assembly is mounted on the base 9 to clamp and fix the pressure plate 10. The gripper assembly includes a clamping seat 1, a pressure ball 2, a clamping block 3, and an elastic element 4; the clamping seat 1 includes a first connecting plate 102 and a second connecting plate 103, the first connecting plate 102 is arranged along a first direction for mounting on the base 9, the second connecting plate 103 is arranged along a second direction, and the second connecting plate 103 is provided with a clamping block groove 104 for accommodating the clamping block 3, the second direction being perpendicular to the first direction. A mounting hole 101 is provided on the clamping base 1, which communicates with the pressure block groove 104. The pressure ball 2 is placed in the mounting hole 101. The clamping block 3 is rotatably mounted on the clamping base 1 via a first rotating shaft 5. Specifically, the clamping block 3 includes a clamping section 31 and a force-applying section 32. That is, the part where the first end of the clamping block 3 is located is the clamping section 31, and the part where the second end of the clamping block 3 is located is the force-applying section 32. The clamping section 31 is rotatably connected in the pressure block groove 104 via the first rotating shaft 5. The first end of the pressure block 3, namely the clamping section 31, is used to connect with the pressure ball 2. The second end of the clamping block 3, namely the force-applying section 32, is connected to the clamping seat 1 through the elastic element 4 (e.g., spring). An installation groove is provided on the side of the force-applying section 32 near the clamping seat 1. The elastic element 4 is installed in the installation groove. Using the elastic force of the elastic element 4, the force-applying section 32 is lifted, and the clamping section 31 rotates around the first rotating shaft 5. The clamping section 31 moves downward and connects with the pressure ball 2, so that the pressure ball 2 moves downward and presses the pressure plate 10. A limiting structure 6 is provided at the first end of the clamping block 3, i.e., the clamping section 31, corresponding to the mounting hole 101. With this setting, when the clamping section 31 moves downward and connects with the pressure ball 2, the limiting structure 6 will move with the clamping section 31 to the space between the mounting hole 101 and the pressure ball 2, giving the pressure ball 2 a lateral force, so that the pressure ball 2 is always positioned on the side, thereby limiting the position of the pressure ball 2 and preventing the pressure ball 2 from moving within the mounting hole 101, thus preventing the pressure ball 2 from driving the pressure plate 10 to move, and solving the problem of wafer misalignment.

[0043] In one embodiment, reference is made to Figure 6There are two gripper assemblies, which are arranged at intervals on the base 9 and located on opposite sides of the pressure plate 10.

[0044] As an example, there are two gripper assemblies. During installation, the two gripper assemblies are arranged at intervals on the base 9, located on opposite sides of the pressure plate 10. This arrangement facilitates the clamping and fixing of the pressure plate 10 through the cooperation of the two gripper assemblies.

[0045] This utility model provides a wire bonding machine, including a pressing mechanism.

[0046] As an example, the wire bonding machine includes a pressing mechanism; the pressing mechanism includes a base 9, a pressure plate 10, and a gripper assembly; the pressure plate 10 is the workpiece to be pressed; during installation, the gripper assembly is mounted on the base 9 to clamp and fix the pressure plate 10. The gripper assembly includes a clamping seat 1, a pressure ball 2, a clamping block 3, and an elastic element 4; the clamping seat 1 includes a first connecting plate 102 and a second connecting plate 103, the first connecting plate 102 is arranged along a first direction for mounting on the base 9, the second connecting plate 103 is arranged along a second direction, and the second connecting plate 103 is provided with a clamping block groove 104 for accommodating the clamping block 3, the second direction being perpendicular to the first direction. A mounting hole 101 is provided on the clamping base 1, which communicates with the pressure block groove 104. The pressure ball 2 is placed in the mounting hole 101. The clamping block 3 is rotatably mounted on the clamping base 1 via a first rotating shaft 5. Specifically, the clamping block 3 includes a clamping section 31 and a force-applying section 32. That is, the part where the first end of the clamping block 3 is located is the clamping section 31, and the part where the second end of the clamping block 3 is located is the force-applying section 32. The clamping section 31 is rotatably connected in the pressure block groove 104 via the first rotating shaft 5. The first end of the pressure block 3, namely the clamping section 31, is used to connect with the pressure ball 2. The second end of the clamping block 3, namely the force-applying section 32, is connected to the clamping seat 1 through the elastic element 4 (e.g., spring). An installation groove is provided on the side of the force-applying section 32 near the clamping seat 1. The elastic element 4 is installed in the installation groove. Using the elastic force of the elastic element 4, the force-applying section 32 is lifted, and the clamping section 31 rotates around the first rotating shaft 5. The clamping section 31 moves downward and connects with the pressure ball 2, so that the pressure ball 2 moves downward and presses the pressure plate 10. A limiting structure 6 is provided at the first end of the clamping block 3, i.e., the clamping section 31, corresponding to the mounting hole 101. With this setting, when the clamping section 31 moves downward and connects with the pressure ball 2, the limiting structure 6 will move with the clamping section 31 to the space between the mounting hole 101 and the pressure ball 2, giving the pressure ball 2 a lateral force, so that the pressure ball 2 is always positioned on the side, thereby limiting the position of the pressure ball 2 and preventing the pressure ball 2 from moving within the mounting hole 101, thus preventing the pressure ball 2 from driving the pressure plate 10 to move, and solving the problem of wafer misalignment.

[0047] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A gripper assembly, characterized in that, Includes clamping seat, pressure ball, clamping block and elastic element; The clamp is provided with a mounting hole, and the pressure ball is placed in the mounting hole; The clamping block is rotatably mounted on the clamping seat via a first rotating shaft. The first end of the clamping block is used to connect with the pressure ball, and the second end of the clamping block is connected to the clamping seat via the elastic element. The first end of the clamping block is provided with a limiting structure at the position corresponding to the mounting hole, and the limiting structure is used to limit the pressure ball.

2. The gripper assembly according to claim 1, characterized in that, The limiting structure includes one or more limiting protrusions; the multiple limiting protrusions are arranged in a ring. One end of each of the limiting protrusions is connected to the first end of the clamping block, and the second end of each of the limiting protrusions is used to be placed in the gap between the mounting hole and the pressure ball.

3. The gripper assembly according to claim 2, characterized in that, The surface of each of the limiting protrusions that contacts the pressure ball is an arc-shaped concave surface.

4. The gripper assembly according to claim 1, characterized in that, The gripper assembly also includes an adjustment component; The adjustment component is disposed on the second end of the clamping block and is in contact with the elastic element, and is used to adjust the compression amount of the elastic element.

5. The gripper assembly according to claim 4, characterized in that, The adjustment assembly includes an adjustment bolt and an adjustment plug; The adjusting bolt is located on the second end of the clamping block and contacts the elastic element; The adjusting plug is mounted on the adjusting bolt and is located between the clamping block and the bolt cap of the adjusting bolt; Alternatively, the adjustment assembly may include an adjustment bolt and scale markings; The adjusting bolt is located on the second end of the clamping block and contacts the elastic element; The scale markings are set on the adjusting bolt along the axial direction.

6. The gripper assembly according to claim 5, characterized in that, The adjusting plug includes a connecting ring and at least one plug piece mounted on the connecting ring; Each of the plug pieces has a snap-fit ​​end away from the connecting ring, the snap-fit ​​end matching the adjusting bolt, so that the plug piece is located between the clamping block and the bolt cap of the adjusting bolt.

7. The gripper assembly according to claim 1, characterized in that, The gripper assembly also includes a claw; The pawl is disposed on the clamping seat, and the pawl contacts the second end of the clamping block to move the first end of the clamping block away from the pressure ball.

8. A pressing mechanism, characterized in that, Includes a base, a pressure plate, and a gripper assembly as described in any one of claims 1-7; The pressure plate is the workpiece to be pressed; The gripper assembly is mounted on the base and is used to clamp and fix the pressure plate.

9. The pressing mechanism according to claim 8, characterized in that, The number of gripper assemblies is two, and the two gripper assemblies are arranged at intervals on the base, located on opposite sides of the pressure plate.

10. A wire bonding machine, characterized in that, Includes the pressing mechanism as described in any one of claims 8-9.

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