Gold bonding wire straightening device

Abstract

The utility model relates to a straightening device, in particular to a gold bonding wire straightening device which comprises a bottom plate, a protective shell, a support, a gear motor, a rotating shaft, a movable frame, an elastic piece and the like. The edge of the bottom plate is fixedly connected with a protective shell, one side of the bottom plate is fixedly connected with a support, the middle of the support is fixedly connected with a gear motor, two output shafts of the gear motor are connected with rotating shafts, the gear motor drives the rotating shafts to rotate on the support, one side of the bottom plate is fixedly connected with a cooling box, and the upper portion of the cooling box is fixedly connected with an annular cooling pipe. A mounting frame is fixedly connected to one side of the cooling box, a guide pipe is fixedly connected to one side of the upper portion of the mounting frame, and the annular cooling pipe is wound around the guide pipe and communicates with the interior of the cooling box. The guide pipe is subjected to water cooling in the mode that the annular cooling pipe and the cooling box interact, the temperature of the straightened gold bonding wire can be rapidly and effectively reduced, and material performance change or deformation caused by high temperature is prevented.

Description

Technical Field

[0001] The utility model relates to a straightening device, in particular to a bonding gold wire straightening device. Background Art

[0002] Gold bonding wire is a gold alloy wire used as a connecting wire in integrated circuits. It is also called ball bond gold wire or lead gold wire. This precision gold alloy wire not only carries the task of transmitting current and signals, but also ensures the stability and efficient operation of the internal structure of the integrated circuit. Its gold content is usually ≥99.99%, and may contain trace amounts of beryllium, copper, silver and other elements to improve its performance. At present, after the production of gold bonding wire is completed, it is wound on a reel. It needs to be straightened when processed into components, so a straightening machine is required.

[0003] The Chinese patent with the authorization announcement number CN214517301U discloses a straightening device for gold wire with anti-rotation extrusion type bonded wire, comprising: a frame and a mounting seat fixedly connected to both sides of the upper end of the frame, a wire hole is evenly arranged on the side wall of the vertical plate parallel to the limit groove on the outer wall of the straightening roller, a group of wire rollers are arranged on the side wall of the vertical plate outside the port of the wire hole through a bracket in conjunction with a U-shaped seat, and another group of wire rollers are arranged in parallel on the top of the first group of wire rollers by using a U-shaped connecting rod in conjunction with another group of U-shaped seats, a connecting rod is set through the top plate of the U-shaped seat of each group of wire rollers, and the connecting rod is connected to the U-shaped seat of the wire roller. The lower end is fixedly connected to the clamping block with an elastic component. The lower end of the clamping block is arranged close to the top of the wire roller and has an arc-shaped structure. The bonding gold wire is wound on the outer wall of the wire roller in an S shape, and the connecting rod is pulled to compress the elastic component to drive the clamping block to prevent the gold wire from being attached to the outer wall of the wire roller. The device cools the bonding gold wire by spraying water from top to bottom through the cooling component, but the cooling component can only spray water from top to bottom, resulting in an inability to fully cool the bonding gold wire, and the bonding gold wire is easily oxidized and produces impurities when in contact with water, affecting subsequent processing. The device has certain limitations.

[0004] Based on this, it is necessary to design a bonding wire straightening device that can fully cool the bonding wire without affecting subsequent processing. Utility Model Content

[0005] In order to overcome the shortcomings of insufficient cooling and low efficiency of bonding gold wires during the straightening process, the technical problem of the utility model is to provide a bonding gold wire straightening device that can perform efficient cooling when straightening the bonding gold wires.

[0006] The technical implementation scheme of the utility model is: a bonded gold wire straightening device, including a base plate, a protective shell, a bracket, a reduction motor, a rotating shaft, a movable frame, an elastic member, a mounting frame, a guide tube, a cooling box and an annular cooling tube, the upper part of the base plate is fixedly connected to the protective shell, the base plate and the protective shell form an integral body and have a certain accommodating space inside, one side of the base plate is fixedly connected to the bracket, the middle of the bracket is fixedly connected to the reduction motor, two output shafts of the reduction motor are connected to the rotating shaft, the reduction motor drives the rotating shaft to rotate on the bracket, the lower part of the movable frame is slidably connected to the bracket, the lower end of the movable frame is provided with an elastic member, the elastic member is located between the lower end of the movable frame and the bracket, one side of the base plate is fixedly connected to the cooling box, the upper part of the cooling box is fixedly connected to the annular cooling tube, the upper side of the base plate close to the cooling box is fixedly connected to the mounting frame, the upper side of the mounting frame is fixedly connected to the guide tube, the annular cooling tube is wound around the guide tube and communicates with the inside of the cooling box.

[0007] Optionally, it also includes a correction wheel and a bidirectional threaded rod. The upper part of the mounting frame is rotatably connected to the bidirectional threaded rod in the horizontal and vertical directions respectively. A group of correction wheels is threadedly connected to the bidirectional threaded rod. The through hole reserved for the bonding gold wire to pass through between the two correction wheels in the vertical group is opposite to the through hole reserved for the bonding gold wire to pass through between the two correction wheels in the horizontal group.

[0008] Optionally, the center point of the through hole and the center point of the guide tube are connected to form a straight line.

[0009] Optionally, it also includes a motor, a rotating cylinder, a cleaning cylinder and a gear set. The motor is installed inside the protective shell. The rotating cylinder is rotatably connected to the inside of the protective shell through a U-shaped ring. The cleaning cylinder is fixedly connected to the inside of the rotating cylinder. The motor and the rotating cylinder are connected through a gear set, and the motor drives the rotating cylinder to rotate through the gear set.

[0010] Optionally, a collecting frame is slidably provided in the middle of the protective shell, and the collecting frame is correspondingly provided below the rotating drum and can slide.

[0011] Optionally, a guide plate is fixedly connected to one side of the cooling box close to the opening of the protective shell, and the guide plate is designed to be arc-shaped and provides guidance for the bonding wire.

[0012] The beneficial effects of the present invention are as follows: 1. The guide tube is water-cooled by the interaction of the annular cooling tube and the cooling box, which can quickly and effectively reduce the temperature of the bonded gold wire after straightening, prevent material performance changes or deformation caused by high temperature, and ensure the stability and reliability of the product.

[0013] 2. Before straightening, the friction between the cleaning cylinder and the bonding wire effectively removes impurities and oxides on the surface of the bonding wire, thereby improving the quality of the bonding wire and the subsequent processing effect.

[0014] 3. By adjusting the spacing of the straightening wheels on the bidirectional threaded rod, the force exerted on the bonded wire during the straightening process can be precisely controlled to ensure the consistency of the straightening effect and meet the needs of bonded wires of different diameters or materials.

[0015] 4. The entire process, from installing the reel, conveying the bonding wire, cleaning, straightening to cooling, most operations are completed automatically by the mechanical structure, reducing manual intervention and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the main perspective.

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from the back perspective.

[0018] Figure 3 It is a three-dimensional structural diagram of the internal structure of the utility model.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the reduction motor, movable frame, elastic member and rotating shaft of the utility model.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the mounting frame, correction wheel and bidirectional threaded rod of the utility model.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the cooling box and the annular cooling pipe of the utility model.

[0022] Figure 7 It is a three-dimensional structural diagram of the motor, rotating cylinder, cleaning cylinder and gear set of the utility model.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the guide plate of the utility model.

[0024] In the above drawings: 1: base plate, 2: protective shell, 3: bracket, 4: reduction motor, 401: rotating shaft, 5: moving frame, 6: elastic member, 7: mounting frame, 8: correction wheel, 9: bidirectional threaded rod, 901: guide tube, 10: cooling box, 11: annular cooling tube, 12: motor, 13: rotating cylinder, 14: cleaning cylinder, 15: gear set, 16: collection frame, 17: guide plate. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] Embodiment: A bonding wire straightening device, such as Figure 1 、 Figure 3 and Figure 4As shown, it includes a base plate 1, a protective shell 2, a bracket 3, a reduction motor 4, a rotating shaft 401, a movable frame 5, an elastic member 6, a mounting frame 7, a guide tube 901, a cooling box 10 and an annular cooling tube 11. The upper part of the base plate 1 is fixedly connected to the protective shell 2. The base plate 1 and the protective shell 2 form an integral body and have a certain accommodating space inside. One side of the base plate 1 is fixedly connected to the bracket 3, and the middle part of the bracket 3 is fixedly connected to the reduction motor 4. The two output shafts of the reduction motor 4 are connected to the rotating shaft 401. The reduction motor 4 drives the rotating shaft 401 to rotate on the bracket 3. The end of the rotating shaft 401 away from the reduction motor 4 is slidably connected to the movable frame 5. Here, the movable frame 5 is composed of a limiting cylinder detachably connected to the rotating shaft 401, a vertical plate fixed at one end of the limiting cylinder and a cross bar fixed at the lower end of the vertical plate. The lower cross bar of the movable frame 5 is slidably connected to the bracket 3 An elastic member 6 is provided between the end of the lower cross bar of the movable frame 5 and the bracket 3. The elastic member 6 is located between the lower end of the movable frame 5 and the bracket 3. The elastic member 6 is a rubber member or a spring with elastic properties. As a preferred method, the elastic member 6 in this embodiment is preferably a spring. A cooling box 10 is fixedly connected to one side of the bottom plate 1. An annular cooling pipe 11 is fixedly connected to the upper part of the cooling box 10. A mounting frame 7 is fixedly connected to the side of the upper part of the bottom plate 1 close to the cooling box 10. A guide pipe 901 for the bonding gold wire to pass through is fixedly connected to one side of the upper part of the mounting frame 7. The annular cooling pipe 11 is wound around the guide pipe 901 and connected to the inside of the cooling box 10. An elastic member 6 is provided between the end of the cross bar farthest from the vertical plate and the bracket 3; a water pump is provided inside the cooling box 10, and the cooling water is circulated in the cooling box 10 and the annular cooling pipe 11 by driving the water pump.

[0027] like Figure 1 、 Figure 3 and Figure 4 As shown, it also includes a correction wheel 8 and a bidirectional threaded rod 9. The upper part of the mounting frame 7 is respectively connected to the bidirectional threaded rod 9 in the horizontal and vertical rotation. A group of correction wheels 8 are threadedly connected to the bidirectional threaded rod 9. The correction wheel 8 is driven to slide on the mounting frame 7 by rotating the bidirectional threaded rod 9. The through hole reserved for the bonding gold wire to pass through between the two correction wheels 8 in the vertical group is opposite to the through hole reserved for the bonding gold wire to pass through between the two correction wheels 8 in the horizontal group, and the center point of the through hole is connected to the center point of the guide tube 901 in a straight line. According to the utility model, by rotating the bidirectional threaded rod 9 counterclockwise, the bidirectional threaded rod 9 drives the two correction wheels 8 to approach each other in the mounting frame 7, and the distance between the two correction wheels 8 is reduced. When the bidirectional threaded rod 9 is rotated clockwise, the bidirectional threaded rod 9 drives the two correction wheels 8 to approach each other in the mounting frame 7, and the distance between the two correction wheels 8 is reduced, thereby realizing the adjustment of the distance between the two correction wheels 8, so as to straighten the bonding gold wires of different diameters.

[0028] like Figure 3 and Figure 7As shown, it also includes a motor 12, a rotating cylinder 13, a cleaning cylinder 14 and a gear set 15. The motor 12 is installed inside the protective shell 2. The rotating cylinder 13 is rotatably connected to the inside of the protective shell 2 through a connecting rod. The cleaning cylinder 14 is fixedly connected to the inside of the rotating cylinder 13. The motor 12 and the rotating cylinder 13 are connected through the gear set 15, and the motor 12 drives the rotating cylinder 13 to rotate through the gear set 15. When the rotating cylinder 13 is rotated, the rotating cylinder 13 drives the cleaning cylinder 14 to rotate. When the bonding wire passes through the cleaning cylinder 14, the cleaning cylinder 14 generates friction with the bonding wire and scrapes off impurities attached to the bonding wire, thereby completing the cleaning of the bonding wire.

[0029] like Figure 1 and Figure 3 As shown, a collecting frame 16 is slidably provided in the middle of the protective shell 2. The collecting frame 16 is correspondingly provided below the rotating cylinder 13 and can slide. The collected impurities can be centrally processed by sliding the collecting frame 16 outward.

[0030] like Figure 1 and Figure 8 As shown, a guide plate 17 is fixedly connected to one side of the cooling box 10 near the opening of the protective shell 2. The guide plate 17 is designed to be arc-shaped. The guide plate 17 provides guidance for the straightened bonding wire to facilitate subsequent work.

[0031] When straightening the bonding wire, first open the protective shell 2, pull the movable frame 5 outward, and install the bonding wire reel on the rotating shaft 401. At this time, the spring is compressed. After installation, release the movable frame 5, and the spring returns to its initial state and drives the movable frame 5 to move inward, thereby fixing the bonding wire reel. Then start the reduction motor 4, which drives the rotating shaft 401 to rotate counterclockwise. The rotating shaft 401 drives the bonding wire reel to rotate counterclockwise to transport the bonding wire. The bonding wire passes through the cleaning cylinder 14. During the process of the bonding wire passing through the cleaning cylinder 14, the motor 12 drives the rotating cylinder 13 to rotate through the gear set 15. The rotating cylinder 13 drives the cleaning cylinder 14 to rotate, so that impurities are cleaned by friction between the cleaning cylinder 14 and the bonding wire. The impurities dropped by friction fall into the collection frame 16 below, and the impurities can be centrally processed by sliding the collection frame 16 outward. The cleaned bonding gold wire is straightened by passing through two sets of straightening wheels 8 with preset spacing. The straightened bonding gold wire passes through the guide tube 901 and is fully cooled without contacting water. Finally, it passes through the guide tube 901 and is guided by the guide plate 17 to pass through the opening of the protective shell 2 for subsequent operations.

[0032] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A bonding wire straightening device, comprising a base plate (1), a protective shell (2), a bracket (3), a reduction motor (4) and a rotating shaft (401), wherein the upper portion of the base plate (1) is fixedly connected to the protective shell (2), the base plate (1) and the protective shell (2) are formed into one body and have a certain accommodation space inside, one side of the base plate (1) is fixedly connected to the bracket (3), the middle portion of the bracket (3) is fixedly connected to the reduction motor (4), the two output shafts of the reduction motor (4) are connected to the rotating shaft (401), the reduction motor (4) drives the rotating shaft (401) to rotate on the bracket (3), and the device is characterized in that: The invention also includes a movable frame (5), an elastic member (6), a mounting frame (7), a guide tube (901), a cooling box (10) and an annular cooling tube (11), wherein the end of the rotating shaft (401) away from the reduction motor (4) is slidably connected to the movable frame (5), the lower portion of the movable frame (5) is slidably connected to the bracket (3), the lower end portion of the movable frame (5) is provided with an elastic member (6), and the elastic member (6) is located between the lower end portion of the movable frame (5) and the bracket (3), one side of the bottom plate (1) is fixedly connected to the cooling box (10), the upper portion of the cooling box (10) is fixedly connected to the annular cooling tube (11), the upper portion of the bottom plate (1) is fixedly connected to the mounting frame (7) on one side close to the cooling box (10), the upper portion of the mounting frame (7) is fixedly connected to the guide tube (901), and the annular cooling tube (11) is wound around the guide tube (901) and communicated with the interior of the cooling box (10).

2. A bonding wire straightening device as claimed in claim 1, characterized in that: The invention also includes a correction wheel (8) and a bidirectional threaded rod (9), the upper part of the mounting frame (7) is connected to the bidirectional threaded rod (9) in a horizontal and vertical rotational manner, and a group of correction wheels (8) are threadedly connected to the bidirectional threaded rod (9), and a through hole reserved for the bonding wire to pass through between the two correction wheels (8) in the vertical group is opposite to the through hole reserved for the bonding wire to pass through between the two correction wheels (8) in the horizontal group.

3. A bonding wire straightening device as claimed in claim 2, characterized in that: The center point of the through hole and the center point of the guide tube (901) are connected to form a straight line.

4. A bonding wire straightening device as claimed in claim 3, characterized in that: The invention also includes a motor (12), a rotating cylinder (13), a cleaning cylinder (14) and a gear set (15). The motor (12) is installed inside the protective shell (2). The protective shell (2) is rotatably connected to the rotating cylinder (13) via a connecting rod. The cleaning cylinder (14) is fixedly connected to the rotating cylinder (13). The motor (12) and the rotating cylinder (13) are connected via the gear set (15), and the motor (12) drives the rotating cylinder (13) to rotate via the gear set (15).

5. A bonding wire straightening device as claimed in claim 4, characterized in that: A collecting frame (16) is slidably provided in the middle of the protective shell (2); the collecting frame (16) is correspondingly provided below the rotating cylinder (13) and is capable of sliding.

6. A bonding wire straightening device as claimed in claim 5, characterized in that: A guide plate (17) is fixedly connected to one side of the cooling box (10) adjacent to the opening of the protective shell (2). The guide plate (17) is designed to be arc-shaped and provides guidance for the bonding wire.

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