Wear-resistant wire drawing die

Abstract

The utility model discloses a wear-resistant wire drawing die, which relates to the technical field of iron wire forming, and comprises a die shell and a die core, the top surface of the die shell is provided with an inlet area, the bottom surface of the die shell is provided with an outer outlet area, a die core cavity is arranged between the inlet area and the outer outlet area, the inner side wall of the die core cavity is provided with heat dissipation annular channels at equal intervals, and the heat dissipation annular channels are communicated with the die shell. According to the wire drawing die, the two functions of lubricating and cooling of cutting fluid are utilized, the bypass hole is formed in the side wall of the inlet area and used for guiding redundant cutting fluid into the heat dissipation annular channel, part of the cutting fluid is collected in the sizing area and used for lubricating iron wires, and therefore the wire drawing die has the wear-resisting effect; and the other part of the cutting fluid flows into each heat dissipation annular channel to take away heat generated by the mold shell and the mold core due to the wire drawing effect, and the temperature is kept stable, so that the assembly effect of the mold shell and the mold core is more accurate, and the iron wire forming quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wire forming technical field especially relates to a wear -resisting wire drawing die. BACKGROUND

[0002] Wire drawing die is a kind of die for metal processing, mainly used to make various specifications of wire material by metal material through drawing process. It is like a special "passage", and metal material is drawn into thinner wire under the action of certain external force through the die hole of wire drawing die from the original size of thicker. For example, in the wire and cable industry, wire drawing die is needed to draw thick copper pole into copper wire of different line diameter.

[0003] Such as patent publication no. CN218656152U "a wear -resisting wire drawing die", including wire drawing die, the right side of wire drawing die is fixedly installed with oiling frame, the inner chamber of oiling frame is fixedly sleeved with oil discharge frame, the left side of wire drawing die is fixedly installed with oil discharge frame, and the outside of oiling frame and oil discharge frame is fixedly installed with positioning frame.

[0004] But in the prior art, when metal material passes through the die hole of wire drawing die, since the diameter of die hole is less than the original diameter of metal material, metal occurs plastic deformation, and in this process, the work done by the external force applied to metal is partially converted into heat energy, the thermal expansion and cold shrinkage effect of wire drawing die material caused by heat leads to the gap between die shell and die core assembly and gradually increases, affects the positioning effect of die core, causes the position deviation of iron wire during wire drawing, and stress deformation occurs between two dies, thereby affecting the forming quality of iron wire. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of wear -resisting wire drawing dies to solve the problems existing in prior art, when metal material passes through the die hole of wire drawing die, since the diameter of die hole is less than the original diameter of metal material, metal occurs plastic deformation, and in this process, the work done by the external force applied to metal is partially converted into heat energy, the thermal expansion and cold shrinkage effect of wire drawing die material caused by heat leads to the gap between die shell and die core assembly and gradually increases, affects the positioning effect of die core, causes the position deviation of iron wire during wire drawing, and stress deformation occurs between two dies, thereby affecting the forming quality of iron wire.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a wear-resistant wire drawing die, including die shell and die core, the top surface of die shell is seted up with the entrance area, the bottom surface of die shell is seted up with the outer export area, the die core cavity is seted up between the entrance area and the outer export area, the inner side wall of die core cavity is seted up with the heat dissipation ring channel at equal intervals, the side wall of entrance area is seted up with the bypass hole, the bottom end of bypass hole is communicated with the most upper heat dissipation ring channel, the shunt hole is communicated between two adjacent heat dissipation ring channels, and the heat dissipation ring channel in the most lower position is seted up with the discharge hole, and the discharge hole is communicated with the outer side wall of die shell.

[0007] Preferably, the top end of the die core is provided with a compression zone, and the bottom end of the die core is provided with an inner export area, and a sizing zone is provided between the compression zone and the inner export area.

[0008] Preferably, the boundary lines of the sizing zone, the compression zone and the inner export area are all treated by rounding.

[0009] Preferably, the bypass hole, the shunt hole and the discharge hole are staggered in the up-down order on the left and right positions.

[0010] Preferably, the boundary line of the entrance area and the die core cavity is outwardly protruded to form a flange table.

[0011] Preferably, the outer periphery of the bottom surface of the die core is inwardly formed with a necked-in round corner.

[0012] Preferably, the die shell and the die core are press-fitted and connected through the flange table and the necked-in round corner.

[0013] Compared with the prior art, the utility model has the advantages and positive effects that:

[0014] 1. In the utility model, the lubrication and cooling functions of cutting fluid are utilized, the bypass hole is set on the side wall of the entrance area to guide the excess cutting fluid into the heat dissipation ring channel, a part of the cutting fluid is collected in the sizing zone for lubricating the iron wire, so that the wire drawing die has the wear-resistant effect, another part of the cutting fluid flows into each heat dissipation ring channel to take away the heat generated by the wire drawing effect of the die shell and the die core, so that the temperature is maintained stable, thereby the assembly effect of the die shell and the die core is more accurate, and the iron wire forming quality is improved.

[0015] 2. In the utility model, the bypass hole, the shunt hole and the discharge hole are staggered in the left and right positions according to the height arrangement order, so that the cutting fluid introduced into the upper opening of the heat dissipation ring channel and the cutting fluid flowing out of the lower opening are located at the two ends of the position circle, the cutting fluid can only flow to the lower opening from the two sides, and when the cutting fluid converges to the lower opening position, the whole die core outer side wall can be cooled, the cooling effect is improved, and the assembly accuracy of the die shell and the die core is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 This is a three-dimensional structural diagram of a wear-resistant wire drawing die proposed in this utility model;

[0017] Figure 2 This is a schematic diagram showing the disassembled structure of the mold shell and mold core of a wear-resistant wire drawing die proposed in this utility model;

[0018] Figure 3 This is a front sectional view of a wear-resistant wire drawing die proposed in this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of the local structure at point A;

[0020] Figure 5 for Figure 3 A magnified view of the local structure at point B in the middle.

[0021] Legend: 1. Mold shell; 2. Mold core; 3. Inlet area; 4. Compression area; 5. Mold core cavity; 6. Heat dissipation ring channel; 7. Outer outlet area; 8. Inner outlet area; 9. Sizing area; 10. Bypass hole; 11. Diverting hole; 12. Drain hole; 13. Flange platform; 14. Narrowing fillet. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: As Figures 1-5 As shown, this utility model provides a wear-resistant wire drawing die, including a die shell 1 and a die core 2. The top surface of the die shell 1 has an inlet area 3, and the bottom surface of the die shell 1 has an outer outlet area 7. A die core cavity 5 is formed between the inlet area 3 and the outer outlet area 7. Heat dissipation ring channels 6 are formed at equal intervals on the inner sidewall of the die core cavity 5. A bypass hole 10 is formed on the sidewall of the inlet area 3. The bottom end of the bypass hole 10 is connected to the uppermost heat dissipation ring channel 6. A diversion hole 11 is connected between two adjacent heat dissipation ring channels 6. A drain hole 12 is formed on the lowermost heat dissipation ring channel 6. The drain hole 12 is connected to the outer sidewall of the die shell 1.

[0025] The specific setup and function of this embodiment will be described in detail below. On the production line, the wire drawing die is installed as follows: Figure 3The upper and lower order is installed on the work station, the rough wire from top to bottom through the drawing die, rough wire from the entrance area 3 into, through the compression area 4 into the die core cavity 5, by the die core cavity 5 necking forming drawing effect, rough wire into thin wire, and from the inner exit area 8, and finally from the outer exit area 7 to the next group of drawing die for repeated drawing, until the wire reaches the required fineness, the wire from the last drawing die is wound on the roll, in the process of drawing forming, cutting fluid is added to the entrance area 3, the cutting fluid is accumulated in the entrance area 3, part of the cutting fluid enters the compression area 4 and the sizing area 9 with the wire, which wraps the outer wall of the wire and plays a lubricating role, so that the die core 2 is more wear-resistant, and the service life of the drawing die is improved. At the same time, part of the excess cutting fluid overflows, and the liquid level rises to the top of the bypass hole 10. Due to the vertical placement of the drawing die, the excess cutting fluid is guided into the heat dissipation ring channel 6 through the bypass hole 10, and fills each layer of the heat dissipation ring channel 6 through each shunt hole 11. The cutting fluid fills the inner cavity of the heat dissipation ring channel 6 and fully contacts the outer wall of the die core 2. Finally, the cutting fluid is discharged from the drain hole 12. A container is placed below the drawing die to collect the cutting fluid discharged from the drain hole 12 for recycling. Since the cutting fluid carries away the friction heat generated during drawing, the temperature between the die shell 1 and the die core 2 is stable, so that the assembly effect of the die shell 1 and the die core 2 is more stable, and the position deviation of the die core 2 is avoided to affect the wire forming.

[0026] As shown in Figure 3 、 Figure 4 and Figure 5 , the top end of the die core 2 is provided with a compression area 4, the bottom end of the die core 2 is provided with an inner exit area 8, and the compression area 4 and the inner exit area 8 are provided with a sizing area 9. The boundary lines of the sizing area 9, the compression area 4 and the inner exit area 8 are all polished by round corners. The bypass hole 10, the shunt hole 11 and the drain hole 12 are staggered in position in the upper and lower order. The boundary line between the entrance area 3 and the die core cavity 5 is outwardly protruded to form a flange table 13. The outer periphery of the bottom surface of the die core 2 is inwardly formed with a necked round corner 14. The die shell 1 and the die core 2 are connected by press fitting through the flange table 13 and the necked round corner 14.

[0027] Since the heat dissipation ring channel 6 is a ring-shaped channel, when the distance between the inlet above the heat dissipation ring channel 6 and the outlet below the heat dissipation ring channel 6 is too close, the cutting fluid is guided into the heat dissipation ring channel 6 from the top, and before it flows completely through the heat dissipation ring channel 6, it is discharged from the bottom, which cannot dissipate heat to the entire outer wall of the die core 2.

[0028] In the embodiment, in order to make the cutting fluid uniformly fill each different height of the heat dissipation ring channel 6, the shunt holes 11 are arranged in an interlaced shape, when the cutting fluid is introduced from the top, the lower position is located on the other side, so the cutting fluid can only flow to the lower position from both sides, when the cutting fluid converges to the lower position, the heat dissipation effect of the whole outer wall of the mold core 2 is improved.

[0029] The use method and working principle of the device are as follows: first, install the drawing die with the inlet area 3 upward and the outer outlet area 7 downward, let the rough iron wire pass through the drawing die from top to bottom, the rough iron wire enters from the inlet area 3, passes through the compression area 4 and enters the mold core cavity 5, the rough iron wire is formed into a thin iron wire by the necking of the mold core cavity 5, and the thin iron wire is drawn out from the inner outlet area 8;

[0030] At the same time, add excess cutting fluid to the inlet area 3, part of the cutting fluid is collected in the sizing area 9 for lubricating the iron wire, so that the drawing die has a wear-resistant effect, and the other part of the cutting fluid flows out from the bypass hole 10, is subjected to the action of gravity, is introduced into the heat dissipation ring channel 6, and fills the heat dissipation ring channel 6 of each layer through each shunt hole 11, so that the cutting fluid fills the inner cavity of the heat dissipation ring channel 6 and fully contacts the outer side wall of the mold core 2;

[0031] Finally, the cutting fluid is discharged from the drain hole 12, a container is placed below the drawing die for containing the cutting fluid introduced from the drain hole 12, so that the cutting fluid can be recycled and reused.

[0032] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in other forms, any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the protection scope of the present application.

Claims

1. A wear resistant wire drawing die comprising a die shell (1) and a die core (2), characterized in that: The top surface of the mold shell (1) is provided with an inlet area (3), the bottom surface of the mold shell (1) is provided with an outer outlet area (7), a mold core cavity (5) is provided between the inlet area (3) and the outer outlet area (7), the inner side wall of the mold core cavity (5) is provided with heat dissipation ring channels (6) at equal intervals, the side wall of the inlet area (3) is provided with a bypass hole (10), the bottom end of the bypass hole (10) is communicated with the uppermost heat dissipation ring channel (6), the two adjacent heat dissipation ring channels (6) are communicated with a shunt hole (11), the lowermost heat dissipation ring channel (6) is provided with a drain hole (12), and the drain hole (12) is communicated with the outer side wall of the mold shell (1).

2. A wear resistant wire drawing die according to claim 1, characterized in that: The top end of the mold core (2) is provided with a compression area (4), the bottom end of the mold core (2) is provided with an inner outlet area (8), and a sizing area (9) is provided between the compression area (4) and the inner outlet area (8).

3. A wear resistant wire drawing die according to claim 2, wherein: The boundary lines of the sizing area (9), the compression area (4) and the inner outlet area (8) are all processed by roundness polishing.

4. A wear resistant wire drawing die according to claim 1, characterized in that: The bypass hole (10), the shunt hole (11) and the drain hole (12) are staggered and distributed in the up-down order at the two positions.

5. A wear resistant wire drawing die according to claim 1, wherein: The boundary line of the inlet area (3) and the mold core cavity (5) is outwardly protruded to form a flange table (13).

6. A wear resistant wire drawing die according to claim 1, characterized in that: The outer periphery of the bottom surface of the mold core (2) is inwardly formed into a necked round corner (14).

7. A wear resistant wire drawing die according to claim 1, wherein: The mold shell (1) and the mold core (2) are press-fitted and connected through the flange table (13) and the necked round corner (14).

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