A cleaver mounting jig of a wire bonding apparatus

Abstract

The utility model discloses a kind of cleaver mounting jigs of lead bonding equipment, the utility model relates to the field of semiconductor chip packaging, specifically includes: cleaver claw, shell, propelling rod, fixed sleeve, handle and cover mirror.The handle is when the propelling rod is pushed to the propelling rod, the propelling rod main shaft is pushed to the direction of the clamping jaw limiter, when the propelling rod pulley contacts the contact surface of the clamping jaw limiter and continues to advance, the clamping jaw presents closed state, to clamp cleaver;When the handle is the propelling rod and disappears, the propelling rod spring opens, drives the propelling rod pulley and leaves the contact surface of the clamping jaw limiter, the clamping jaw spring closes and drives the clamping jaw and presents open state, cleaver can be mounted and dismounted from the recess of the clamping jaw;The mirror maps cleaver mounting hole position of lead bonding equipment, convenient for installation positioning. This cleaver mounting jig solves the inconvenient problem of lead equipment cleaver installation.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor chip packaging, specifically a cleaver mounting fixture for wire bonding equipment. Background Technology

[0002] In the wire bonding process of semiconductor chips, different pad sizes, different height differences between pads, and different lead diameters all place different requirements on the selection of wedges. Therefore, when changing to produce different products, it is often necessary to change the corresponding wedge model. Traditional wedge installation methods in wire bonding equipment mainly rely on manual experience and operating skills. Operators need to rely on experience to make multiple attempts to achieve the ideal alignment. This process is not only time-consuming but also requires a high level of skill from the operator. For novices, improper operation during the wedge picking and installation process can easily damage the wedge or the transducer of the wire bonding equipment, directly affecting the stability of the bonding process and the equipment maintenance cost. To address this, a wedge installation fixture for wire bonding equipment is proposed. This fixture can conveniently and stably clamp the wedge and map the wedge mounting hole position of the wire bonding equipment, which can greatly reduce the difficulty of wedge installation and replacement for novices and improve the efficiency of wedge installation and replacement. Utility Model Content

[0003] This utility model discloses a wedge mounting fixture for wire bonding equipment, which can overcome the shortcomings of the traditional wedge mounting method and solve the problem of difficulty for novices in installing and replacing wedges.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A wedge mounting fixture for a wire bonding device includes a wedge claw, a housing, a push rod, a fixed sleeve, a handle, and a lens structure. The handle is nested within the inner cavity of the fixed sleeve and is limited by a handle limiting rod in the handle limiting hole. The fixed sleeve has an external thread that connects to the internal thread of the housing. The push rod is located within the inner cavity of the housing and includes a push rod spindle, a push rod spring limiting ring, a push rod spring, a push rod pulley, and a push rod pulley fixing shaft. The push rod spindle and the push rod spring limiting ring are integrally fixed structures. Two push rod pulleys are symmetrically connected to the push rod spindle. At the bottom, the push rod is fixed vertically to the main shaft of the push rod via a pulley fixing shaft; the push rod spring limiting ring is fitted onto the main shaft of the push rod and is limited by the spring limiting ring; the top of the main shaft of the push rod is nested in the movable cavity of the handle; the push rod pulley passes through the inner spring limiting ring of the outer shell and is located between the claw limiting devices of the two chopping claws, for pushing the claws of the chopping claws to close; the chopping claws are equipped with claw springs for driving the claws to open, and the chopping claws are fixed to the outer shell via the chopping claw's moving shaft; the lens is fastened to the outer shell by the lens's outer shell buckle ring.

[0006] Furthermore, the chopping claw is equipped with grippers, gripper fixing bolts, gripper limiters, a moving shaft, and gripper springs; there are two grippers, left and right, with grooves on the inner sides of the grippers to match the shape and size of the chopping blade; the grippers are fixed to the gripper limiters by the gripper fixing bolts; the moving shaft passes through the gripper limiters and the housing, used to fix the gripper limiters in the inner cavity of the housing and to provide a motion bearing for the opening and closing of the grippers; there are at least two gripper springs, symmetrically fixed above the inner inclined surface of the gripper limiters, used to drive the grippers to open.

[0007] Furthermore, the outer casing is provided with a moving shaft fixing hole, an internal thread, an internal spring limiting ring, and an inner cavity. There are two moving shaft fixing holes on each side for mounting the moving shaft, and the gripper limiter is nested at the bottom of the inner cavity. The bottom of the outer casing has symmetrical arc-shaped openings, providing space for the opening and closing of the gripper and for its assembly and disassembly. The internal thread is located at the top of the inner cavity and is used to connect and fix the fixing sleeve. The internal spring limiting ring and the outer casing are integrally fixed. The internal spring limiting ring has a through hole with a diameter larger than the distance between the outer edges of the two push rod pulleys but smaller than the diameter of the push rod spring, providing a limit for the extension and retraction of the push rod spring.

[0008] Furthermore, the fixed sleeve is provided with a handle limiting hole, an external thread of the fixed sleeve, and an inner cavity of the fixed sleeve; the handle limiting hole is in the shape of a "cross", integrally formed by cutting with the fixed sleeve, in a "through-open" state, forming a connected hollow structure for the installation and nesting of the handle limiting rod and for the active limiting of the handle; the characteristics of the external thread of the fixed sleeve match the characteristics of the internal thread of the housing for connecting with the housing; the inner cavity of the fixed sleeve is used for sleeving the handle to provide an active space for the handle.

[0009] Furthermore, the handle is a "convex"-shaped cylinder, provided with a handle limiting rod and an active cavity; the handle limiting rod is located on the barrel wall of the small-diameter section of the "convex"-shaped cylinder, and provides limiting for the movement of the handle through interaction with the handle limiting hole; the active cavity is located in the "end face inner hole area" of the small-diameter section of the "convex"-shaped cylinder to provide support and limiting for the movement of the top end of the push rod spindle.

[0010] Furthermore, the lens sleeve is in an "L" shape, provided with a housing snap ring and a reflector; the housing snap ring is an open-type annular clamp structure for snap-fixing on the housing of the housing; the reflector is used to map the position of the splitting knife clamped by the splitting knife claw and the position of the splitting knife mounting hole of the wire bonding equipment. Advantages

[0011] The advantages of the present utility model are as follows:

[0012] When clamping the splitting knife, only need to push the handle limiting rod into the "one"-shaped area range of the handle limiting hole, and the jig will automatically clamp the splitting knife tightly, and there is no need for the hand to continuously output clamping force.

[0013] The inner side surface of the clamping claw is provided with a groove, and the contact surface with the splitting knife presents a surface contact. Compared with the traditional splitting knife clamping tool (such as tweezers), there will be no phenomenon of splitting knife deflection and attitude instability when clamping the splitting knife.

[0014] The clamping claws are detachable and replaceable. According to the characteristics of splitting knives with different shapes, different materials, and different sizes, clamping claws with corresponding groove shapes, groove sizes, and corresponding materials can be replaced, and its flexibility is strong; when replacing the clamping claws without grooves, the jig can also be used as tweezers.

[0015] This jig is equipped with a lens sleeve that can be flexibly disassembled. The reflector on the lens sleeve can map the position of the splitting knife mounting hole on the wire bonding equipment, and when installing the splitting knife, the operator can conveniently align and install. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a splitting knife installation jig for a wire bonding equipment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the chopping claw structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the outer shell structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the push rod structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the fixed sleeve structure of this utility model.

[0021] Figure 6 This is a schematic diagram of the handle structure of this utility model.

[0022] Figure 7 This is a schematic diagram of the lens cover structure of this utility model.

[0023] Figure 8 This is a schematic diagram of a partial structural assembly of the present invention.

[0024] In the diagram: 1-Cleaver claw, 101-Clamping claw, 102-Clamping claw fixing bolt, 103-Clamping claw limiter, 104-Moving shaft, 105-Clamping claw spring, 2-Outer shell, 201-Moving shaft fixing hole, 202-Outer shell internal thread, 203-Outer shell internal spring limit ring, 204-Outer shell inner cavity, 3-Push rod, 301-Push rod main shaft, 302-Push rod spring limit ring, 303-Push rod spring, 304-Push rod pulley, 305-Push rod pulley fixing shaft, 4-Fixed sleeve, 401-Handle limiting hole, 402-Fixed sleeve external thread, 403-Fixed sleeve inner cavity, 5-Handle, 501-Handle limiting rod, 502-Moving cavity, 6-Mirror sleeve, 601-Outer shell buckle ring, 602-Reflector. Detailed Implementation

[0025] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings of the embodiments of the present utility model. The example structures listed in the embodiments are all within the protection scope of the present utility model.

[0026] like Figure 1 The present invention discloses a three-dimensional structure of a wedge mounting fixture for a wire bonding device, comprising a wedge claw 1, a housing 2, a push rod 3, a fixing sleeve, a handle 5, and a sleeve mirror 6. The handle 5 is nested within the inner cavity 403 of the fixing sleeve 4 and is limited by a handle limiting rod 501 within the handle limiting hole 401 of the fixing sleeve 4. The fixing sleeve 4 has an external thread 402, which connects to the internal thread 202 of the housing 2. The push rod 3 is located within the inner cavity 204 of the housing 2. Figure 4The schematic diagram of the push rod structure of the present invention is shown. The push rod 3 is provided with a push rod main shaft 301, a push rod spring limiting ring 302, a push rod spring 303, a push rod pulley 304, and a push rod pulley fixing shaft 305. The push rod main shaft 301 and the push rod spring limiting ring 302 are integrated fixed structures. There are two push rod pulleys 304, which are symmetrically connected to the bottom of the push rod main shaft 301 and fixed by the push rod pulley fixing shaft 305 perpendicularly passing through the push rod main shaft 301. When a push force is applied to the handle 5, the top end of the push rod main shaft 301 will be pushed by the movable cavity 502, thereby driving the push rod main shaft 301 to move towards the gripper limiter 103. When the push rod pulley 304 contacts the inner inclined contact surface of the gripper limiter 103 and continues to move, the gripper spring... When 105 is pulled open, the gripper 101 is in a closed state, thus clamping the chopping knife; the push rod spring limiting ring 302 is fitted onto the push rod main shaft 301, and the extension and retraction of the push rod spring 303 is limited by the push rod spring limiting ring 302; the top end of the push rod main shaft 301 is nested in the movable cavity 502 of the handle 5, and is in a flexible and movable state after nesting; the push rod pulley 304 passes through the inner spring limiting ring 203 of the outer shell and avoids the two gripper springs 105, and is located between the two gripper limiters 103, for pushing the gripper 101 of the chopping knife claw 1 to close; the chopping knife claw 1 is provided with a gripper spring 105, for driving the gripper 101 to open, and the chopping knife claw 1 is fixed to the outer shell 2 by the moving shaft 104; the lens 6 is flexibly fastened to the shell of the outer shell 2 by the outer shell buckle ring 601.

[0027] like Figure 2The schematic diagram of the chopping knife claw structure of this utility model is shown. The chopping knife claw 1 includes a gripper 101, a gripper fixing bolt 102, a gripper limiter 103, a moving shaft 104, and a gripper spring 105. There are two grippers 101, left and right, symmetrically distributed. The inner side of the gripper 101 is provided with a groove for matching the shape and size of the chopping knife. The gripper 101 is fixed to the gripper limiter 103 by the gripper fixing bolt 102. The gripper 101 is detachable and replaceable. The gripper 101 can be replaced with a gripper 101 with a corresponding groove shape, groove size, and corresponding material according to the characteristics of chopping knives of different shapes, materials, and sizes. 1; The moving shaft 104 passes through the gripper limiter 103 and the housing 2, and is used to fix the gripper limiter 103 in the inner cavity 204 of the housing 2, and to provide a motion bearing for the opening and closing of the gripper 101; There are at least two gripper springs 105, which are symmetrically fixed above the inner inclined surface of the gripper limiter 103. When the pushing force of the handle 5 on the push rod 3 disappears, the push rod spring 303 opens, driving the push rod pulley 304 away from the inner inclined contact surface of the gripper limiter 103, and the gripper spring 105 closes and drives the gripper 101 to be in an open state.

[0028] like Figure 3 The schematic diagram of the outer shell structure of this utility model is shown. The outer shell 2 is provided with a moving shaft fixing hole 201, an inner thread 202, an inner spring limiting ring 203, and an inner cavity 204. There are two moving shaft fixing holes 201 on each side, symmetrically distributed, for loading the moving shaft 104 and nesting the gripper limiting device 103 at the bottom of the inner cavity 204. The bottom of the outer shell 2 has a symmetrical arc-shaped opening, providing space for the opening and closing of the gripper 101 and for the disassembly and assembly of the gripper. The inner thread 202 is located at the top of the inner cavity 204 and is used to connect and fix the fixing sleeve 4. The inner spring limiting ring 203 and the outer shell 2 are integrally fixed. The inner spring limiting ring 203 has a through hole, the diameter of which is larger than the distance between the outer edges of the two push rod pulleys 304 on the left and right sides and smaller than the diameter of the push rod spring 303, providing a limit for the extension and retraction of the push rod spring 303.

[0029] like Figure 5The schematic structural diagram of the fixing sleeve of the present utility model is shown. The fixing sleeve 4 is provided with a handle limiting hole 401, an external thread 402 of the fixing sleeve, and an inner cavity 403 of the fixing sleeve. The handle limiting hole 401 is in the shape of a "cross", integrally formed by cutting with the fixing sleeve 4, in a "through-type open" state, forming a connected hollow structure, which is used for the installation and nesting of the handle limiting rod 501 and for the movable limit of the handle 5. Specifically, the "I"-shaped area on the handle limiting hole 401 is the thrust movable range of the handle 5, and the "-" -shaped area on the handle limiting hole 401 is the thrust limiting range of the handle 5. That is, when the handle limiting rod 501 is pushed to the "-" -shaped area on the handle limiting hole 401, the handle 5 will be blocked, and the splitting claw 1 will be kept in a closed state all the time by the pushing rod 3. The external thread 402 of the fixing sleeve is matched with the characteristics of the internal thread 202 of the housing for connecting with the housing 2. The inner cavity 403 of the fixing sleeve is used for sleeving the handle 5, providing space for the pushing movement of the handle 5.

[0030] As Figure 6 The schematic structural diagram of the handle of the present utility model is shown. The handle 5 is a "convex" -shaped cylinder structure, provided with a handle limiting rod 501 and a movable cavity 502. The handle limiting rod 501 is located on the wall of the small-diameter section of the "convex" -shaped cylinder, providing a movable range and limit for the handle 5 through interaction with the handle limiting hole 401. The movable cavity 502 is located in the "end face inner hole area" of the small-diameter section of the "convex" -shaped cylinder, providing support and limit for the movement of the top end of the main shaft 301 of the pushing rod.

[0031] As Figure 7 The schematic structural diagram of the lens sleeve of the present utility model is shown. The lens sleeve 6 is in an "L" shape, provided with a housing snap ring 601 and a reflecting mirror 602. The housing snap ring 601 is an open-type annular clamp structure for snap-fixing on the housing of the housing 2. The reflecting mirror 602 is used for mapping the position of the splitting knife clamped on the splitting claw 1 and the position of the splitting knife mounting hole of the wire bonding equipment, facilitating alignment during splitting knife installation.

[0032] It should be noted that although the embodiments of the present utility model have been shown and described, these embodiments can be variously changed, modified, and replaced without departing from the principle of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A wedge mounting fixture for a wire bonding device, characterized in that, It is composed of a chopping claw (1), a shell (2), a push rod (3), a fixed sleeve (4), a handle (5), and a lens (6); specifically, the handle (5) is nested in the inner cavity (403) of the fixed sleeve (4), and is limited to the handle limiting hole (401) of the fixed sleeve (4) by the handle limiting rod (501) of the handle (5); the fixed sleeve (4) is provided with a fixed sleeve external thread (402), which is connected to the shell internal thread (202) of the shell (2); The push rod (3) is located in the inner cavity (204) of the outer shell (2). The push rod (3) is provided with a push rod main shaft (301), a push rod spring limiting ring (302), a push rod spring (303), a push rod pulley (304), and a push rod pulley fixing shaft (305). The push rod main shaft (301) and the push rod spring limiting ring (302) are an integrated fixed structure. There are two push rod pulleys (304), which are symmetrically connected to the push rod main shaft (301). The bottom of the push rod (3) is fixed by the push rod pulley fixing shaft (305) which is vertically inserted into the push rod main shaft (301); the push rod spring limiting ring (302) is fitted onto the push rod main shaft (301) and limited by the push rod spring limiting ring (302); the top of the push rod main shaft (301) of the push rod (3) is nested in the movable cavity (502) of the handle (5); the push rod pulley (304) of the push rod (3) passes through the inner spring of the outer shell (2). A spring limiting ring (203) is located between the gripper limiting devices (103) of the two chopping claws (1) and is used to push the gripper (101) of the chopping claw (1) to close; the chopping claw (1) is provided with a gripper spring (105) to drive the gripper (101) to open; the chopping claw (1) is fixed to the outer shell (2) through the moving shaft (104) of the chopping claw (1); the lens (6) is fastened to the outer shell (2) through the outer shell buckle ring (601) of the lens (6).

2. The wedge mounting fixture for a wire bonding device as described in claim 1, characterized in that: The chopping claw (1) is provided with a gripper (101), a gripper fixing bolt (102), a gripper limiter (103), a moving shaft (104), and a gripper spring (105). There are two grippers (101) on the left and right sides. The inner side of the gripper (101) is provided with a groove to match the shape and size of the chopping blade. The gripper (101) is fixed on the gripper limiter (103) by the gripper fixing bolt (102). The moving shaft (104) passes through the gripper limiter (103) and the outer shell (2) to fix the gripper limiter (103) in the inner cavity (204) of the outer shell (2) and to provide a motion bearing for the opening and closing of the gripper (101). There are at least two gripper springs (105), which are symmetrically fixed above the inner inclined surface of the gripper limiter (103) to drive the gripper (101) to open.

3. The wedge mounting fixture for a wire bonding device as described in claim 1, characterized in that: The housing (2) is provided with action shaft fixing holes (201), internal housing threads (202), internal housing spring limit rings (203) and an internal housing cavity (204); there are two action shaft fixing holes (201) on each of the left and right sides, which are used to load the action shaft (104) to nest the jaw limiter (103) at the bottom position of the internal housing cavity (204); the bottom of the housing (2) is a symmetrically-arc-shaped opening on the left and right, providing an action space for the opening and closing of the jaws (101) and the disassembly and assembly of the jaws; the internal housing threads (202) are located at the top of the internal housing cavity (204) and are used to connect and fix the fixed sleeve (4); the internal housing spring limit ring (203) and the housing (2) are integrally fixed, and the internal housing spring limit ring (203) is provided with a through hole, the aperture of which is larger than the outer edge spacing of the two push rod pulleys (304) on the left and right and smaller than the diameter of the push rod spring (303), providing a limit for the expansion and contraction of the push rod spring (303).

4. The wedge mounting fixture for a wire bonding device as described in claim 1, characterized in that: The fixed sleeve (4) is provided with a handle limit hole (401), external fixed sleeve threads (402) and an internal fixed sleeve cavity (403); the handle limit hole (401) is in the shape of a "cross", is integrally machined with the fixed sleeve (4), and is in a "through-open" state, forming a connected hollow structure, which is used for the installation and nesting of the handle limit rod (501) and for the movement limit of the handle (5); the characteristics of the external fixed sleeve threads (402) match the characteristics of the internal housing threads (202) and are used to connect with the housing (2); the internal fixed sleeve cavity (403) is used to sleeve the handle (5) and provides a movement space for the handle (5).

5. The wedge mounting fixture for a wire bonding device as described in claim 1, characterized in that: The handle (5) is a "convex"-shaped cylinder and is provided with a handle limit rod (501) and a movement cavity (502); the handle limit rod (501) is located on the barrel wall of the small-diameter section of the "convex"-shaped cylinder and provides a limit for the movement of the handle (5) through interaction with the handle limit hole (401); the movement cavity (502) is located in the "end face inner hole area" of the small-diameter section of the "convex"-shaped cylinder and provides support and limit for the movement of the top end of the push rod main shaft (301).

6. The wedge mounting fixture for a wire bonding device as described in claim 1, characterized in that: The sleeve mirror (6) is in an "L" shape and is provided with a housing snap ring (601) and a reflector (602); the housing snap ring (601) is an open-type annular clamp structure and is used for snap-fixing on the housing of the housing (2); the reflector (602) is used to map the position of the bonding tool held by the bonding tool jaw (1) and the position of the bonding tool mounting hole of the wire bonding equipment.

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