Rapid cooling device for welding wire machine table

Abstract

The utility model provides a rapid cooling device for a welding wire machine, and belongs to the technical field of semiconductor packaging, the rapid cooling device comprises a cooling support frame erected on a welding wire machine track, the cooling support frame reciprocates on the welding wire machine through a first sliding device, and a cooling plate is slidably arranged on the cooling support frame through a second sliding device; the cooling plate reciprocates on the cooling support frame; a gas blowing hole array is arranged on one surface, facing the welding wire machine table, of the cooling plate, each gas blowing hole in the gas blowing hole array is externally connected with a nitrogen source, when the welding wire machine table needs to be cooled, the cooling plate reaches a designated position through the first sliding device and the second sliding device, and after the nitrogen source is connected, the gas blowing hole array cools the welding wire machine table; according to the cooling device, the nitrogen plate and the heat dissipation plate are designed on the cooling plate at the same time, in the working process, the blowing hole array blows nitrogen towards the welding wire machine table for cooling, the surface area of the heat dissipation plate is increased through the heat dissipation fins, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor packaging, and in particular to a rapid cooling device for a wire bonding machine. Background Art

[0002] There is a front-end wire bonding process in the semiconductor packaging process. The purpose of this wire bonding process is to effectively connect the chip and the lead frame together through gold wire, copper wire, silver wire, and aluminum wire according to the product drawings for conduction. The wire bonding machine uses a heating pad to heat the lead frame for wire bonding at the bonding position. The heating temperature is generally between 140 and 200 degrees. Since the lead frame is made of copper, excessive temperature will cause the machine to alarm and shut down. At the same time, if the product stays in a high-temperature exposed air environment for a long time, the lead frame will oxidize and cause abnormal stratification. Therefore, a rapid cooling device for a wire bonding machine is urgently needed. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a rapid cooling device for a wire welding machine in view of the deficiencies in the prior art. When the temperature of the wire welding machine is too high, the cooling device runs to the working position, releases nitrogen, and cools the wire welding machine.

[0004] Technical solution: The invention discloses a rapid cooling device for a wire bonding machine, comprising a cooling support frame mounted on a track of the wire bonding machine, the cooling support frame reciprocating on the wire bonding machine via a first sliding device, a cooling plate slidably arranged on the cooling support frame via a second sliding device, and the cooling plate reciprocating on the cooling support frame;

[0005] A blowing hole array is arranged on the side of the cooling plate facing the wire bonding machine, and each blowing hole on the blowing hole array is externally connected to a nitrogen source. When the wire bonding machine needs to be cooled, the cooling plate reaches a designated position through a first sliding device and a second sliding device. After the nitrogen source is connected, the blowing hole array cools the wire bonding machine.

[0006] Furthermore, the first sliding device includes two running wheel rails arranged outside the track of the wire welding machine, at least four first wheel pairs are slidably arranged on the running wheel rails, a first slider is arranged on the axle position of each first wheel pair, a cooling support frame is vertically fixed on each first slider, the first slider near the end of the running wheel rail is sleeved with a first screw rod, the first screw rod is driven by a first motor fixed on the wire welding machine, the first wheel pair is controlled by the motor, and when in use, the cooling device is moved from the waiting area to the wire bonding position of the wire welding machine.

[0007] When the first motor is working, it drives the first screw rod to rotate, and the first screw rod thereby drives the cooling support frame sleeved thereon to reciprocate on the running wheel rail. Since the four cooling support frames mounted on the running wheel rail are fixed into a whole through cooling plates and fixing screws, after the first screw rod drives one cooling support frame to move, the entire moving frame moves together.

[0008] Furthermore, the second sliding device includes an inner wheel rail arranged on the inner side of the cooling support frame, a second wheel pair is slidably arranged on each inner wheel rail, a second slider is arranged on the axle ring of each second wheel pair, four ends of the cooling plate are respectively fixed on the second slider, a second screw rod is sleeved on one side of the cooling plate, the second screw rod is driven by a second motor, and the second wheel pair is controlled by the motor to operate. When in use, it will wait for the cooling block to descend to a position 5 cm above the hitting line.

[0009] When the second motor is working, it drives the second screw to rotate, and the second screw drives the cooling plate sleeved thereon to make up and down reciprocating motion on the inner wheel track. When working, the cooling plate moves down to the top of the product for cooling.

[0010] Furthermore, a nitrogen plate is provided in the middle of one side of the cooling plate facing the track of the wire welding machine, and the nitrogen plate is provided with an array of blowing holes, each blowing hole in the array of blowing holes is connected to a nitrogen pipe joint through an internal pipeline, and the nitrogen pipe joint is connected to an external nitrogen source. When the cooling plate descends to above the product, the nitrogen plate is connected to the nitrogen source, and the array of blowing holes blows air toward the wire welding machine to cool it down; the main material of the cooling plate is metal, because metal has good thermal conductivity, and the working principle of the cooling plate is to transfer the heat generated by the equipment to the cooling plate through the heat sink, and then exchange heat with the air through the cooling plate to quickly dissipate the heat.

[0011] Furthermore, cooling plate fixing screws are arranged on the four corners of the cooling plate, and the cooling plate fixing screws fix the cooling plate to the cooling support frame.

[0012] Furthermore, the cooling plate also includes heat sinks located on both sides of the nitrogen plate, and the heat sink has a plurality of raised heat sinks on one side facing the wire bonding machine track, which increase the surface area of ​​the heat sink and improve the heat dissipation efficiency.

[0013] Furthermore, the surface of the heat sink is coated with black heat dissipation pigment, which increases the heat radiation effect and further improves the heat dissipation efficiency.

[0014] Beneficial effects: Compared with the prior art, the advantages of the present invention are:

[0015] (1) The present invention is designed with a cooling device that can move back and forth on the wire bonding machine, and the wire bonding machine is cooled by the cooling device, thereby preventing the wire bonding machine from being overheated and causing the machine to alarm and shut down;

[0016] (2) The cooling plate on the cooling device of the present invention is designed with a nitrogen plate and a heat sink. When working, not only does the blowing hole array blow nitrogen toward the wire bonding machine to cool it down, but the heat sink also increases the surface area of ​​the heat sink, thereby improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the cooling support frame in the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the running wheel-rail in the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the inner wheel rail in the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the cooling plate in the present invention;

[0022] Figure 6 It is a schematic diagram of the working state of the present invention. DETAILED DESCRIPTION

[0023] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0024] like Figure 1 and Figure 2 A rapid cooling device for a wire welding machine is shown, comprising a cooling support frame 1 mounted on a track of the wire welding machine, the cooling support frame 1 reciprocating on the wire welding machine via a first sliding device 2, a cooling plate 4 is slidably arranged on the cooling support frame 1 via a second sliding device 3, and the cooling plate 4 reciprocates on the cooling support frame 1.

[0025] like Figure 3 As shown, the first sliding device 2 includes two running wheel rails 2-1 arranged on the outer side of the wire welding machine track, at least four first wheel pairs are slidably arranged on the running wheel rails 2-1, a first slider 2-2 is arranged on the axle position of each first wheel pair, a cooling support frame 1 is vertically fixed on each first slider 2-2, the first slider 2-2 near the end of the running wheel rail 2-1 is sleeved with a first screw rod 2-3, the first screw rod 2-3 is driven by a first motor 2-4 fixed on the wire welding machine, the first wheel pair is controlled by the motor, and when in use, the cooling device is moved from the waiting area to the wire bonding position of the wire welding machine.

[0026] like Figure 4 As shown, the second sliding device 3 includes an inner wheel rail 3-1 arranged on the inner side of the cooling support frame 1, and a second wheel pair is slidably arranged on each inner wheel rail 3-1, and a second slider 3-2 is arranged on the axle of each second wheel pair, and four ends of a cooling plate 4 are respectively fixed on the second slider 3-2, and a second screw rod 3-3 is sleeved on one side of the cooling plate 4, and the second screw rod 3-3 is driven by a second motor 3-4. The second wheel pair is controlled by the motor and will wait for the cooling block to drop to a position 5 cm above the hitting line when in use.

[0027] like Figure 5 As shown, cooling plate fixing screws 4-4 are arranged on the four corners of the cooling plate 4, and the cooling plate fixing screws 4-4 fix the cooling plate 4 to the cooling support frame 1. A nitrogen plate 4-1 is arranged in the middle of the side of the cooling plate 4 facing the welding machine track, and heat dissipation plates 4-6 are arranged on both sides.

[0028] The nitrogen plate 4-1 is provided with an air blowing hole array 4-2, each air blowing hole in the air blowing hole array 4-2 is connected to the nitrogen pipe joint 4-3 through an internal pipeline, and the nitrogen pipe joint 4-3 is connected to an external nitrogen source. When the cooling plate moves downward to above the product, the nitrogen plate is connected to the nitrogen source, and the air blowing hole array blows air toward the welding machine to cool it down; the main material of the cooling plate is aluminum alloy, because aluminum alloy has good thermal conductivity, and the working principle of the cooling plate is to transfer the heat generated by the equipment to the cooling plate through the heat sink, and then exchange heat with the air through the cooling plate to quickly dissipate the heat; the nitrogen plate is fixed to the cooling plate by the nitrogen plate fixing screws 4-7.

[0029] The heat sink 4-6 has a plurality of raised heat sinks on one side facing the welding machine track. The heat sinks are vertically inserted into the heat sinks one by one. These heat sinks increase the surface area of ​​the heat sink and improve the heat dissipation efficiency. The surface of the heat sink is coated with black heat dissipation pigment. The surface coating with black pigment increases the heat radiation effect. The black heat dissipation pigment can be a high temperature resistant black pigment, such as the black high temperature resistant pigment of Hongzhi New Materials.

[0030] like Figure 6 As shown, a blowing hole array is provided on one side of the cooling plate 4 facing the wire bonding machine, and each blowing hole on the blowing hole array is externally connected to a nitrogen source. When the wire bonding machine needs to be cooled, the cooling plate passes through the first sliding device 2 and the second sliding device 3 to reach a position 5 cm above the bonding wire. After the nitrogen source is connected, the blowing hole array cools the wire bonding machine, and the heat sink dissipates the heat from the wire bonding machine.

[0031] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A rapid cooling device for a wire bonding machine, characterized in that: It comprises a cooling support frame (1) mounted on the track of the wire bonding machine, the cooling support frame (1) reciprocating on the wire bonding machine via a first sliding device (2), a cooling plate (4) slidably arranged on the cooling support frame (1) via a second sliding device (3), and the cooling plate (4) reciprocating on the cooling support frame (1); The cooling plate (4) is provided with an array of air holes on one side facing the wire bonding machine, and each air hole on the array of air holes is externally connected to a nitrogen source. When the wire bonding machine needs to be cooled, the cooling plate reaches a designated position through a first sliding device (2) and a second sliding device (3), and after the nitrogen source is connected, the array of air holes cools the wire bonding machine.

2. A wire bonding machine rapid cooling device according to claim 1, characterized in that: The first sliding device (2) comprises two running wheel rails (2-1) arranged outside the rails of the wire welding machine, at least four first wheel pairs are slidably arranged on the running wheel rails (2-1), a first slider (2-2) is arranged at the axle position of each first wheel pair, a cooling support frame (1) is vertically fixed on each first slider (2-2), a first screw rod (2-3) is sleeved on the first slider (2-2) near the end of the running wheel rail (2-1), and the first screw rod (2-3) is driven by a first motor (2-4) fixed on the wire welding machine.

3. The rapid cooling device for a wire bonding machine according to claim 1, characterized in that: The second sliding device (3) comprises an inner wheel track (3-1) arranged on the inner side of the cooling support frame (1), a second wheel pair is slidably arranged on each inner wheel track (3-1), a second slider (3-2) is arranged at the axle position of each second wheel pair, four ends of the cooling plate (4) are respectively fixed on the second slider (3-2), a second screw rod (3-3) is sleeved on one side of the cooling plate (4), and the second screw rod (3-3) is driven by a second motor (3-4).

4. The rapid cooling device for a wire bonding machine according to claim 1, characterized in that: A nitrogen plate (4-1) is arranged in the middle of one side of the cooling plate (4) facing the wire welding machine track, and the nitrogen plate (4-1) is provided with a blowing hole array (4-2), and each blowing hole in the blowing hole array (4-2) is connected to a nitrogen pipe joint (4-3) through an internal pipeline, and the nitrogen pipe joint (4-3) is connected to an external nitrogen source.

5. The rapid cooling device for a wire bonding machine according to claim 4, characterized in that: Cooling plate fixing screws (4-4) are provided on the four corners of the cooling plate (4), and the cooling plate fixing screws (4-4) fix the cooling plate (4) and the cooling support frame (1).

6. The rapid cooling device for a wire bonding machine according to claim 4, characterized in that: The cooling plate (4) further comprises heat dissipation plates (4-6) located on both sides of the nitrogen plate (4-1), and the heat dissipation plate (4-6) has a plurality of protruding heat dissipation fins on one side facing the wire bonding machine track.

7. A wire bonding machine rapid cooling device according to claim 6, characterized in that: The surface of the heat sink is coated with black heat dissipation pigment.

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