A circuit bonding dedicated jig

Abstract

This application discloses a special fixture for circuit bonding, belonging to the field of circuit bonding processing tooling technology. It includes a base and a clamping assembly. The base has a first clamping surface that conforms to the circuit to be bonded. The clamping assembly includes a clamping seat and a clamping block. The clamping seat is mounted on the base and has a connecting rod. The clamping block has a first arm and a second arm, which, together with the connecting rod, form a lever structure with the connecting rod as a fulcrum. A compression spring is provided between the first arm and the clamping seat. The end face of the second arm opposite to the first arm is the second clamping surface. The second clamping surface, together with the first clamping surface, defines a clamping space. Under the action of the compression spring, the first arm can rotate relative to the second arm around the connecting rod, thereby pressing the circuit to be bonded within the clamping space. This application can quickly achieve the positioning and installation of the circuit to be bonded, improving work efficiency and ensuring stable clamping of the circuit.

Description

Technical Field

[0001] This application relates to the field of circuit bonding processing tooling technology, and in particular to a special fixture for circuit bonding. Background Technology

[0002] Automatic bonding machines are core process equipment in the semiconductor packaging and microelectronic device manufacturing fields. They are mainly used to complete precision interconnection operations such as wire bonding, flip bonding, and ultrasonic bonding between chips and substrates / lead frames. Tooling fixtures, as key supporting equipment for automatic bonding machines, bear core functions such as workpiece positioning, clamping, posture correction, and process support, directly determining bonding positioning accuracy, processing stability, production efficiency, and product yield. In related technologies, common fixtures for automatic bonding machines are mostly mechanical manual fixtures and vacuum adsorption fixtures. These two types of fixtures suffer from poor positioning adaptability, susceptibility to positioning misalignment, and long clamping and debugging times, leading to substandard bonding accuracy and affecting the conductivity of the bonded circuit and product yield. Summary of the Invention

[0003] The purpose of this application is to provide a special fixture for circuit bonding, which solves the problems of poor stability and low production efficiency of circuit tooling fixtures in related technologies.

[0004] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0005] This application provides a dedicated fixture for circuit bonding, comprising:

[0006] A base having a first clamping surface;

[0007] A clamping assembly includes a clamping base and a clamping block. The clamping base is mounted on the base and has a connecting rod. The clamping block has a first arm and a second arm. The first arm, the connecting rod, and the second arm cooperate to form a lever structure with the connecting rod as the fulcrum. A compression spring is provided between the first arm and the clamping base. The end face of the second arm opposite to the first arm is the second clamping surface, which is adapted to clamp the circuit to be bonded together with the first clamping surface.

[0008] In this design, a base is used to hold the circuit to be bonded, and it has a first clamping surface that fits against the circuit. A clamping assembly is provided on the base. The clamping assembly includes a clamping seat and a clamping block. The clamping seat is mounted on the base and has a connecting rod. The clamping block has a first arm and a second arm, which, together with the connecting rod, form a lever structure with the connecting rod as the fulcrum. A compression spring is provided between the first arm and the clamping seat. The end face of the second arm opposite to the first arm is the second clamping surface. The second clamping surface, together with the first clamping surface, defines a clamping space. Under the action of the compression spring, the first arm can rotate relative to the second arm around the connecting rod, thereby pressing the circuit to be bonded within the clamping space by the second clamping surface.

[0009] During clamping, the clamping space can be adjusted by pressing the first arm to insert the circuit to be bonded. After the circuit to be bonded is placed, the first arm is released. Under the action of the compression spring, the second clamping surface and the first clamping surface can clamp and fix the circuit to be bonded within the clamping space, thus completing the positioning and installation of the circuit to be bonded. This solution is simple to operate and can quickly achieve the positioning and installation of the circuit to be bonded, greatly improving work efficiency; moreover, under the action of the compression spring, the first clamping surface, and the second clamping surface, the clamping stability of the circuit to be bonded can be ensured, so that the bonding accuracy meets the standards.

[0010] Optionally, the clamping base and the first arm are respectively provided with a first spring groove and a second spring groove, and the two ends of the compression spring are located in the first spring groove and the second spring groove, respectively.

[0011] Optionally, the clamping seat has a first limiting part, and the second arm is provided with a limiting member. When the second arm rotates around the connecting rod, the limiting member is adapted to abut against the top surface of the first limiting part.

[0012] In this design, the clamping base and the first arm are respectively provided with a first spring groove and a second spring groove. The two ends of the compression spring are located in the first spring groove and the second spring groove, respectively. The first spring groove and the second spring groove ensure the stability of the spring. To prevent excessive elongation of the compression spring, which could cause it to loosen and detach from the first spring groove and the second spring groove, the clamping base has a first limiting part, and the second arm is provided with a limiting member. When the second arm rotates around the connecting rod, the limiting member is adapted to abut against the top surface of the first limiting part. Through the abutment action between the limiting member and the limiting arm, the elongation length of the spring is limited, thereby preventing the compression spring from loosening and detaching from the first spring groove and the second spring groove due to excessive elongation.

[0013] Optionally, the limiting member is a limiting bolt, which is threaded to the top surface of the second arm. When the second arm rotates around the connecting rod, the bottom surface of the nut of the limiting bolt is adapted to abut against the top surface of the first limiting part.

[0014] In this design, the limiting component is a limiting bolt, which is threaded onto the top surface of the second arm. When the second arm rotates around the connecting rod, the bottom surface of the nut of the limiting bolt is adapted to abut against the top surface of the first limiting part to limit the rotation range. By adjusting the screwing height of the limiting bolt, the rotation range of the second arm can be adjusted, thereby meeting the clamping requirements of circuits of different thicknesses to be bonded.

[0015] Optionally, the first clamping surface is constructed as an inclined surface, and the second clamping surface includes at least one clamping sub-surface, which is rotated about the connecting rod by the second arm, and the clamping sub-surface is adapted to be parallel to the first clamping surface.

[0016] In this design, the first clamping surface is constructed as an inclined plane, and the second clamping surface includes at least one clamping sub-surface. The second arm rotates around the connecting rod, and the clamping sub-surface is adapted to be parallel to the first clamping surface. This design utilizes multiple clamping sub-surfaces to accommodate circuits of varying thicknesses, thus adapting to the clamping of circuits of different thicknesses.

[0017] Optionally, the clamping base further has a second limiting portion, and the clamping block is located between the second limiting portion and the first limiting portion, wherein the first limiting portion and the second limiting portion are symmetrical about the clamping block.

[0018] In this design, the clamping base also has a second limiting part, and the clamping block is located between the second limiting part and the first limiting part. The first limiting part and the second limiting part are symmetrical about the clamping block. The first limiting part and the second limiting part can limit the clamping block in the axial direction of the connecting rod.

[0019] Optionally, the clamping seat is detachably mounted to the base by bolts. The first limiting part and the second limiting part are each provided with a first shaft hole and a screw hole. The first shaft hole and the screw hole are perpendicularly connected. The clamping block is provided with a second shaft hole. The connecting rod passes through the first shaft hole and the second shaft hole. The screw hole is internally threaded with a set screw, and the set screw presses against the connecting rod.

[0020] During long-term use, the components of the clamping assembly may be damaged. To facilitate maintenance and replacement, in this design, the clamping base is detachably mounted to the base by bolts. Both the first and second limiting parts are provided with a first shaft hole and a screw hole, with the first shaft hole and screw hole communicating perpendicularly. The clamping block is provided with a second shaft hole, through which a connecting rod passes. A set screw is threaded into the screw hole, and the set screw tightens the connecting rod. With this design, each component of the clamping assembly can be individually disassembled and replaced.

[0021] During assembly, the clamping block can be installed on the clamping seat first by connecting the connecting rod; then the connecting rod can be tightened by tightening the set screw; next, the compression spring can be placed between the first arm and the clamping seat; finally, the clamping seat can be installed on the base by bolts.

[0022] Optionally, the base has a mounting groove, and the clamping seat is mounted in the mounting groove.

[0023] Optionally, there is at least one mounting slot arranged sequentially along the first direction, and at least one clamping component is provided at equal intervals along the second direction in each mounting slot. The second direction is the same as the axial direction of the connecting rod and perpendicular to the first direction.

[0024] Optionally, the base is provided with at least one clamping block along the second direction, and in the first direction, the clamping block is located between every two adjacent clamping components, and the clamping block has a first clamping surface formed on the end face of one side of the clamping component.

[0025] In this design, at least one mounting slot is provided on the base, arranged sequentially along a first direction. At least one clamping assembly is equally spaced within each mounting slot along a second direction. The second direction is the same as the axial direction of the connecting rod and perpendicular to the first direction. This arrangement allows for the clamping of multiple circuits to be bonded on a single base, significantly improving production efficiency and reducing production costs. The equidistant arrangement of the mounting slots and clamping assemblies along the first and second directions facilitates the orderly clamping of the circuits to be bonded. Furthermore, this arrangement allows multiple clamping assemblies within the same mounting slot to independently mount circuits while also coordinating clamping, further meeting the clamping requirements of circuits of different sizes.

[0026] Compared with the prior art, the beneficial effects achieved by this application are as follows: This application defines the clamping space by means of a second clamping surface and a first clamping surface. The first arm, under the action of a compression spring, rotates relative to the second arm around the connecting rod, causing the second clamping surface to press the circuit to be bonded into the clamping space. When the circuit to be bonded is being clamped, the size of the clamping space can be adjusted by pressing the first arm to insert the circuit. After the circuit to be bonded is placed, the first arm is released, and under the action of the compression spring, the second clamping surface and the first clamping surface can clamp and fix the circuit to be bonded within the clamping space, thereby completing the positioning and installation of the circuit to be bonded. This application is simple to operate and can quickly achieve the positioning and installation of the circuit to be bonded, greatly improving work efficiency; and under the action of the compression spring, the first clamping surface, and the second clamping surface, the clamping stability of the circuit to be bonded can be ensured, ensuring that the bonding accuracy meets the standards. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of a circuit bonding fixture provided in an embodiment of this application;

[0029] Figure 2 This is a schematic diagram of the overall structure of a circuit bonding fixture provided in an embodiment of this application;

[0030] Figure 3 This is an exploded view of a clamping assembly provided in an embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the structure of a base provided in an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1-base; 2-clamping seat; 3-clamping block; 4-compression spring; 5-connecting rod; 6-limiting component; 7-set screw; 11-first clamping surface; 12-mounting groove; 31-second clamping surface. Detailed Implementation

[0033] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure / application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0034] Example 1

[0035] This embodiment describes a special fixture for circuit bonding, referencing... Figures 1 to 3The circuit bonding fixture in this embodiment includes a base 1 and a clamping assembly. The base 1 holds the circuit to be bonded and has a first clamping surface 11 that abuts against the circuit. The clamping assembly is mounted on the base 1. The clamping assembly includes a clamping seat 2 and a clamping block 3. The clamping seat 2 is mounted on the base 1 and has a connecting rod 5. The clamping block 3 has a first arm and a second arm, which, together with the connecting rod 5, form a lever structure with the connecting rod 5 as a fulcrum. A compression spring 4 is provided between the first arm and the clamping seat 2. The end face of the second arm facing away from the first arm is a second clamping surface 31. The second clamping surface 31, together with the first clamping surface 11, defines a clamping space. Under the action of the compression spring 4, the first arm can rotate relative to the second arm around the connecting rod 5, thereby pressing the circuit to be bonded within the clamping space by the second clamping surface 31.

[0036] During clamping, the clamping space size can be adjusted by pressing the first arm to insert the circuit to be bonded. After the circuit to be bonded is placed, the first arm is released, and under the action of the compression spring 4, the second clamping surface 31 can clamp and fix the circuit to be bonded in the clamping space with the first clamping surface 11, thereby completing the positioning and installation of the circuit to be bonded.

[0037] Example 2

[0038] Based on the same inventive concept as Embodiment 1, refer to Figure 3 In this embodiment, the clamping base 2 and the first arm are respectively provided with a first spring groove and a second spring groove. The two ends of the compression spring 4 are located in the first spring groove and the second spring groove, respectively. The first spring groove and the second spring groove ensure the stability of the spring.

[0039] To prevent the compression spring 4 from elongating excessively, which could cause it to loosen and disengage from the first and second spring slots, the clamping base 2 has a first limiting part and a second limiting part. The clamping block 3 is located between the second limiting part and the first limiting part, and the first and second limiting parts are symmetrical about the clamping block 3. The first and second limiting parts can limit the clamping block 3 axially through the first and second limiting parts.

[0040] Furthermore, a limiting member 6 is provided on the second arm. When the second arm rotates around the connecting rod 5, the limiting member 6 is adapted to abut against the top surface of the first limiting part. Through the abutment action between the limiting member 6 and the limiting arm, the extension length of the spring is limited, thereby preventing the compression spring 4 from loosening and disengaging from the first and second spring grooves due to excessive extension. Furthermore, in this embodiment, the limiting member 6 is a limiting bolt, which is threadedly connected to the top surface of the second arm. When the second arm rotates around the connecting rod 5, the bottom surface of the nut of the limiting bolt is adapted to abut against the top surface of the first limiting part to limit the rotation range. By adjusting the screwing height of the limiting bolt, the rotation range of the second arm can be adjusted, thereby meeting the clamping requirements of circuits to be bonded with different thicknesses.

[0041] When clamping circuits of different thicknesses to be bonded, the second clamping surface 31 is configured to conform to the circuits of different thicknesses. In this embodiment, the first clamping surface 11 is constructed as an inclined plane, and the second clamping surface 31 includes at least one clamping sub-surface. By rotating the second arm around the connecting rod 5, the clamping sub-surface is adapted to be parallel to the first clamping surface 11. By providing multiple clamping sub-surfaces to conform to multiple circuits of different thicknesses to be bonded, the clamping of circuits of different thicknesses can be adapted.

[0042] During long-term use, the components in the clamping assembly may be damaged. To facilitate maintenance and replacement, in this embodiment, the clamping base 2 is detachably mounted to the base 1 by bolts. Both the first and second limiting parts are provided with a first shaft hole and a screw hole, with the first shaft hole and the screw hole communicating perpendicularly. The clamping block 3 is provided with a second shaft hole, through which the connecting rod 5 passes. A set screw 7 is threaded into the screw hole, and the set screw 7 tightens the connecting rod 5. Through this design, each component in the clamping assembly can be individually disassembled and replaced.

[0043] During assembly, the clamping block 3 can be installed on the clamping seat 2 first by connecting rod 5; then the connecting rod 5 can be tightened by set screw 7; next, the compression spring 4 can be placed between the first arm and the clamping seat 2; finally, the clamping seat 2 can be installed on the base 1 by bolts.

[0044] Example 3

[0045] Based on the same inventive concept as Embodiment 1, refer to Figure 1 and Figure 4 In this embodiment, the base 1 has at least one mounting groove 12 arranged sequentially along a first direction, and at least one clamping component is provided at equal intervals along a second direction in each mounting groove 12. The second direction is the same as the axial direction of the connecting rod 5 and perpendicular to the first direction.

[0046] The above configuration enables the clamping of multiple circuits to be bonded on a single base 1, thereby improving production efficiency and reducing production costs. The equidistant arrangement of the mounting slots 12 and the clamping components along the first and second directions facilitates the orderly clamping of the circuits to be bonded. Furthermore, this arrangement allows multiple clamping components within the same mounting slot 12 to independently mount circuits to be bonded while also coordinating clamping, further meeting the clamping requirements of circuits of different sizes.

[0047] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this disclosure / application, and these improvements and modifications should also be considered within the protection scope of this disclosure / application.

Claims

1. A special fixture for circuit bonding, characterized in that, include: The base (1) has a first clamping surface (11). The clamping assembly includes a clamping seat (2) and a clamping block (3). The clamping seat (2) is mounted on the base (1) and a connecting rod (5) is provided thereon. The clamping block (3) has a first arm and a second arm. The first arm, the connecting rod (5) and the second arm cooperate to form a lever structure with the connecting rod (5) as the fulcrum. The compression spring (4) is provided between the first arm and the clamping seat (2). The end face of the second arm away from the first arm is the second clamping surface (31). The second clamping surface (31) is adapted to clamp the circuit to be bonded together with the first clamping surface (11).

2. The circuit bonding fixture according to claim 1, characterized in that, The clamping base (2) and the first arm are respectively provided with a first spring groove and a second spring groove, and the two ends of the compression spring (4) are located in the first spring groove and the second spring groove respectively.

3. The circuit bonding fixture according to claim 2, characterized in that, The clamping base (2) has a first limiting part, and a limiting member (6) is provided on the second arm. By rotating the second arm around the connecting rod (5), the limiting member (6) is adapted to abut against the top surface of the first limiting part.

4. The circuit bonding fixture according to claim 3, characterized in that, The limiting member (6) is a limiting bolt, which is threaded to the top surface of the second arm. The second arm rotates around the connecting rod (5), and the bottom surface of the nut of the limiting bolt is adapted to abut against the top surface of the first limiting part.

5. The circuit bonding fixture according to claim 4, characterized in that, The first clamping surface (11) is constructed as an inclined surface, and the second clamping surface (31) includes at least one clamping sub-surface. The clamping sub-surface is adapted to be parallel to the first clamping surface (11) by rotating the second arm around the connecting rod (5).

6. The circuit bonding fixture according to claim 3, characterized in that, The clamping seat (2) also has a second limiting part, and the clamping block (3) is located between the second limiting part and the first limiting part, and the first limiting part and the second limiting part are symmetrical about the clamping block (3).

7. The circuit bonding fixture according to claim 6, characterized in that, The clamping base (2) is detachably installed on the base (1) by bolts. The first limiting part and the second limiting part are provided with a first shaft hole and a screw hole. The first shaft hole and the screw hole are vertically connected. The clamping block (3) is provided with a second shaft hole. The connecting rod (5) passes through the first shaft hole and the second shaft hole. The screw hole is internally threaded with a set screw (7). The set screw (7) is tightened against the connecting rod (5).

8. The circuit bonding fixture according to claim 1, characterized in that, The base (1) has an installation groove (12), and the clamping seat (2) is installed in the installation groove (12).

9. The circuit bonding fixture according to claim 8, characterized in that, The mounting slot (12) is at least one and arranged sequentially along the first direction. Each mounting slot (12) is provided with at least one clamping component at equal intervals along the second direction. The second direction is the same as the axial direction of the connecting rod (5) and perpendicular to the first direction.

10. The circuit bonding fixture according to claim 9, characterized in that, The base (1) is provided with at least one clamping block along the second direction. In the first direction, the clamping block is located between each two adjacent clamping assemblies. The clamping block has a first clamping surface (11) formed on the end face of one side of the clamping assembly.

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