Wire drawing die for bonding silver wire

Abstract

The utility model discloses a wire drawing die for bonding silver wires, which comprises an outer die with an annular structure, an inner cavity with an annular structure is arranged inside the outer die, a plurality of first air vents are arranged on the upper portion of the outer die, a plurality of second air vents are arranged on the lower portion of the outer die, and a plurality of heat exchange ports are arranged on the inner wall of the inner cavity. The inner cavity is communicated with the space at the axis of the outer mold through the heat exchange port; and the inner mold is detachably arranged in the outer mold. When the inner die is replaced, the first nut and the second nut are directly detached, the inner die can be taken out to be replaced, the whole wire drawing die does not need to be detached from the die holder, the replacement process of the inner die is simplified, and the inner die is more convenient to replace; according to the utility model, air convection can be realized by arranging the first air vent, the inner cavity, the second air vent and the heat exchange port on the outer die, and when the wire-drawing die rotates, flowing air directly takes away heat on the surface of the inner die, so that efficient heat dissipation is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the bonding wire processing technical field especially relates to a bonding silver wire's wire drawing die. BACKGROUND

[0002] Bonding silver wire is worn through the wire drawing die in the wire drawing process, and then the wire drawing die rotates under the action of the transmission system, and the external traction mechanism pulls the bonding silver wire, so that the wire drawing processing of the bonding silver wire is realized. In the wire drawing process of the bonding silver wire, the wire drawing die needs to extrude the bonding silver wire, so that the bonding silver wire and the die produce long-time relative friction. Friction will cause wear of the die core of the wire drawing die on the one hand, and will generate a large amount of heat on the other hand. The heat of the wire drawing die will cause the internal stress of the bonding silver wire to rise, thereby causing the product defect rate.

[0003] In order to overcome this problem, some wire drawing dies with replaceable die cores and good heat dissipation effect appear on the market. For example, a wire drawing die for bonding wire production (publication number: CN210647777U) is disclosed in the Chinese utility model. The wire drawing die is divided into an outer die and an inner die, the outer die is divided into two detachable structures, the inner die is installed inside the outer die, and heat dissipation fins are arranged in the outer die and the inner die to dissipate heat for the inner die. Through this technical solution, the inner die can be replaced in time when it is worn, and a good heat dissipation environment can be provided for the inner die during the wire drawing process.

[0004] However, this technology has some drawbacks in the implementation process. First of all, since the wire drawing die is installed on the die seat of the wire drawing machine, the inner die needs to be replaced after the whole wire drawing die is disassembled and the outer die is disassembled, which makes the replacement process more complex. Secondly, the heat dissipation fins are arranged in the outer die and the inner die to dissipate heat. The essence is to cool the heat dissipation fins by external air and then cool the inner die by heat conduction. The heat dissipation efficiency is low. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems of replacing the inner die and poor heat dissipation in the prior art, and provides a wire drawing die for bonding silver wire.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a silver wire bonding wire drawing die, including the outer mould of annular structure, the inside of outer mould is provided with the inner chamber of annular structure, the upper portion of outer mould is provided with a plurality of first air vents, the lower portion of outer mould is provided with a plurality of second air vents, the inner wall of inner chamber is opened with a plurality of heat exchange ports, and the inner chamber is communicated with the space at the axle center of outer mould through heat exchange port, inner mould, inner mould is detachably arranged in outer mould, wherein, outer mould and inner mould are fixed through first nut and second nut, and first nut and second nut are matched with first screw rod and second screw rod respectively.

[0008] Preferably, two first placing grooves are symmetrically arranged on the upper portion of the outer mould near the inner ring of the outer mould.

[0009] Preferably, two first lugs are symmetrically arranged on the lower end of the inner wall of the outer mould, and a first fixing hole is arranged on the first lug.

[0010] Preferably, the first air vents and the second air vents are arranged in a ring array around the axle center of the outer mould.

[0011] Preferably, two second lugs are symmetrically arranged on the upper portion of the inner mould, a second fixing hole is arranged on the second lug, the second lug is matched with the first placing groove, the second fixing hole is matched with the first screw rod one by one, two second placing grooves are symmetrically arranged on the lower portion of the inner mould, a second screw rod is arranged in the second placing groove, the second placing groove is matched with the first lug, and the second screw rod is matched with the first fixing hole one by one.

[0012] Preferably, the inner portion of the inner mould is sequentially provided with a first inlet area, a first compression area, a sizing area, a second compression area and a second inlet area from top to bottom.

[0013] The utility model has the following beneficial effects:

[0014] 1. When the inner mould is replaced, the first nut and the second nut are directly disassembled, the inner mould is taken out and replaced, the wire drawing die does not need to be disassembled from the mould base as a whole, the replacement process of the inner mould is simplified, and the replacement of the inner mould is more convenient.

[0015] 2. The first air vent, the inner chamber, the second air vent and the heat exchange port arranged on the outer mould can realize air convection, when the wire drawing die rotates, the flowing air directly takes away the heat on the surface of the inner mould, and high-efficiency heat dissipation is realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is an explosion structure schematic view of the utility model;

[0018] Figure 3 It is the outer mold section view structure schematic diagram of the utility model;

[0019] Figure 4 It is the inner mold section view structure schematic diagram of the utility model;

[0020] In the drawing: 1, outer mold; 101, inner cavity; 102, first air vent; 103, second air vent; 104, heat exchange port; 105, first screw; 106, first placing groove; 107, first lifting lug; 108, first fixing hole; 2, inner mold; 201, first inlet area; 202, first compression area; 203, sizing area; 204, second compression area; 205, second inlet area; 206, second lifting lug; 207, second fixing hole; 208, second placing groove; 209, second screw; 3, first nut; 4, second nut. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] Referring to Figure 1-4 A wire drawing die for bonding silver wires, comprising an outer mold 1 in a ring structure, an inner cavity 101 in a ring structure is arranged inside the outer mold 1, a plurality of first air vents 102 are arranged on the upper part of the outer mold 1, a plurality of second air vents 103 are arranged on the lower part of the outer mold 1, the plurality of first air vents 102 and the plurality of second air vents 103 are arranged in a ring array around the axis of the outer mold 1, a plurality of heat exchange ports 104 are arranged on the inner wall of the inner cavity 101, the inner cavity 101 is in space communication with the axis of the outer mold 1 through the heat exchange ports 104, in use, after the outer mold 1 rotates, the external air follows the rotation of the first air vents 102, the inner cavity 101 and the air vents 103, and quickly flows through the flow channel composed of the first air vents 102, the inner cavity 101 and the air vents 103, since the heat exchange ports 104 are in space communication with the axis of the outer mold 1, and the inner mold 2 is installed in the space at the axis of the outer mold 1, the air flowing in the flow channel can take away the heat on the surface of the inner mold 2, so that rapid cooling is realized.

[0023] The upper part of the outer mold 1 is symmetrically provided with two first placing grooves 106 near the inner ring position of the outer mold 1, a first screw rod 105 is fixed on the first placing groove 106, and two first lugs 107 are symmetrically fixed on the lower end of the inner wall of the outer mold 1 and are provided with first fixing holes 108, in use, the first placing groove 106 is used for providing installation space for the second lug 206, and the first screw rod 105 can pass through the second fixing hole 207, on the one hand, the first screw rod 105 can realize rapid alignment, and on the other hand, the first screw rod 105 can prevent the relative rotation between the outer mold 1 and the inner mold 2, and the first screw rod 105 can realize rapid installation and disassembly of the upper part of the outer mold 1 and the inner mold 2 in cooperation with the first nut 3.

[0024] The inner mold 2 is detachably arranged in the outer mold 1, the upper part of the inner mold 2 is symmetrically provided with second lugs 206 on both sides, the second lugs 206 are provided with second fixing holes 207, the second lugs 206 are matched with the first placing grooves 106, the second fixing holes 207 are one-to-one corresponding with the first screw rod 105, the lower part of the inner mold 2 is symmetrically provided with second placing grooves 208 on both sides, a second screw rod 209 is fixed on the second placing groove 208, the second placing groove 208 is matched with the first lug 107, and the second screw rod 209 is one-to-one corresponding with the first fixing hole 108, in use, the second screw rod 209 is aligned with the first fixing hole 108, and the installation is carried out from top to bottom and cooperated with the second nut 4, so that the lower part of the outer mold 1 and the inner mold 2 can be rapidly installed, and the design of the second placing groove 208 can provide a certain installation space for the first lug 107.

[0025] The inside of the inner mold 2 is sequentially provided with a first inlet area 201, a first compression area 202, a sizing area 203, a second compression area 204 and a second inlet area 205 from top to bottom, and the design is a conventional design of a wire drawing die, and the structure and function are the same as those in the published technical patent (authorization announcement number: CN210647777U), and details are not repeated here.

[0026] The outer mold 1 and the inner mold 2 are fixed through the first nut 3 and the second nut 4, the first nut 3 and the second nut 4 are matched with the first screw rod 105 and the second screw rod 209 respectively, the outer mold 1 and the inner mold 2 are fixed through the use of the first nut 3 and the second nut 4, and the effect of convenient disassembly and assembly is realized.

[0027] In use, the second screw rod 209 is aligned with the first fixing hole 108 and is inserted, the first screw rod 105 is aligned with the second fixing hole 207 and is inserted, then the first nut 3 is installed on the second fixing hole 207 and the second nut 4 is installed on the second screw rod 209, so that the rapid installation of the outer mold 1 and the inner mold 2 is realized, and then the assembled wire drawing die is installed on the die seat of the wire drawing machine, one side provided with the first screw rod 105 faces upwards, and then the wire drawing die is installed on the die seat.

[0028] After the bonding silver wire passes through the first inlet area 201, the first compression area 202, the sizing area 203, the second compression area 204 and the second inlet area 205, the die base and the drawing die are rotated by the driving mechanism. When the drawing die rotates, air passes through the flow channel formed by the first vent 102, the inner cavity 101 and the second vent 103. When the inner die 2 inside the outer die 1 generates heat during the drawing process, the heat on the outer surface of the inner die 2 enters the flow channel through the heat exchange port 104, and the air flowing in the flow channel takes away the heat to achieve rapid heat dissipation.

[0029] When the inner die in the drawing die installed on the die base needs to be replaced, it is only necessary to remove the first nut 3 and the second nut 4 and take off the inner die 2 to achieve quick disassembly without removing the entire drawing die from the die base. Then, the new inner die 2 can be installed in the outer die 1 according to the above steps.

[0030] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wire drawing die for bonding silver wires, characterized by, The application relates to a heat exchange device, which comprises an outer mold (1) in a ring structure, an inner cavity (101) in a ring structure arranged in the inner part of the outer mold (1), a plurality of first air vents (102) arranged in the upper part of the outer mold (1), a plurality of second air vents (103) arranged in the lower part of the outer mold (1), a plurality of heat exchange openings (104) arranged in the inner wall of the inner cavity (101), and the inner cavity (101) is in space communication with the axial center of the outer mold (1) through the heat exchange openings (104). An inner mold (2) is detachably arranged in the outer mold (1). The outer mold (1) and the inner mold (2) are fixed through a first nut (3) and a second nut (4), and the first nut (3) and the second nut (4) are matched with a first screw rod (105) and a second screw rod (209) respectively.

2. The wire drawing die for bonding silver wires according to claim 1, wherein Two first placing grooves (106) are symmetrically arranged in the upper part of the outer mold (1) close to the inner ring of the outer mold (1).

3. The wire drawing die for bonding silver wires according to claim 1, wherein Two first lugs (107) are symmetrically arranged in the lower end of the inner wall of the outer mold (1), and a first fixing hole (108) is arranged in the first lug (107).

4. The wire drawing die for bonding silver wires according to claim 1, wherein The first air vents (102) and the second air vents (103) are arranged in a ring array around the axial center of the outer mold (1).

5. The wire drawing die for bonding silver wires according to claim 1, wherein A second lug (206) is symmetrically arranged in the upper part of the inner mold (2), a second fixing hole (207) is arranged in the second lug (206), the second lug (206) is matched with the first placing groove (106), the second fixing hole (207) is one-to-one corresponding with the first screw rod (105), a second placing groove (208) is symmetrically arranged in the lower part of the inner mold (2), the second screw rod (209) is fixed in the second placing groove (208), the second placing groove (208) is matched with the first lug (107), and the second screw rod (209) is one-to-one corresponding with the first fixing hole (108).

6. The wire drawing die for bonding silver wires according to claim 1, wherein A first inlet area (201), a first compression area (202), a sizing area (203), a second compression area (204) and a second inlet area (205) are sequentially arranged in the inner part of the inner mold (2) from top to bottom.

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