Wire drawing die capable of rapidly dissipating heat

Abstract

The invention relates to the technical field of wire-drawing dies, in particular to a wire-drawing die capable of rapidly dissipating heat, which comprises a die body, the heat dissipation groove is in an annular shape and is formed in the mold body; the rotating shell is movably arranged on the peripheral wall of the mold body in a sleeving manner; the driving assembly is used for driving the rotating shell to rotate; the inner circumferential wall of the rotating shell extends towards the center in the radial direction of the rotating shell to form a plurality of protruding parts, and the protruding parts are located in the heat dissipation grooves. According to the wire drawing die capable of rapidly dissipating heat, the heat dissipation grooves are formed in the die body, the heat exchange efficiency inside and outside the die can be improved, the rotatable protruding parts are arranged in the heat dissipation grooves, different parts in the heat dissipation grooves can be filled, the internal stress of the heat dissipation grooves is more balanced, and deformation of the heat dissipation grooves is prevented. By arranging the rotating shell and arranging the communicated cavities in the rotating shell and the protruding part, cooling liquid can be smeared on the inner wall of the heat dissipation groove through rotation of the protruding part, and the heat dissipation effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wire drawing dies, in particular to a wire drawing die capable of rapidly dissipating heat. Background Art

[0002] Wire drawing dies refer to various dies for drawing metal wires. As the metal is pulled through the die hole, its size becomes smaller and even its shape changes. During the wire drawing process, the die will generate a lot of heat due to friction and metal deformation. If this heat cannot be dissipated in time, the temperature of the die will rise, which will affect the quality of the wire drawing and the service life of the die.

[0003] In order to improve the heat dissipation effect of the wire drawing die, the existing technology chooses to groove or embed heat-conducting materials in the wire drawing die, such as a heat dissipation type wire drawing die disclosed in publication number CN110394368B, which deposits graphene on the outer periphery of the inner core diamond and the stainless steel shell. The thermal conductivity of graphene is excellent, and the heat in the center area of ​​the wire drawing can be quickly extracted to reduce the temperature of the center area. Another patent with publication number CN106180232B discloses a wire drawing die that is convenient for heat dissipation. An arc-shaped recessed portion is opened on the surface of the metal sintered block, which can dissipate the heat on the surface of the metal sintered block to the heat collection cavity in time. By using the coordination of vertical heat dissipation holes, horizontal heat dissipation holes and U-shaped heat dissipation holes, the heat in the heat collection cavity can be dissipated in different directions, thereby improving the heat dissipation effect of the wire drawing die.

[0004] However, heat dissipation only through opening holes or inlaying heat-conducting materials will only slightly improve the heat exchange effect inside and outside the mold, and the heat dissipation speed is far slower than the speed of heat accumulation inside the mold. The heat dissipation effect is poor and cannot meet the needs of improving production efficiency. In addition, opening holes and inlaying other materials inside the mold will reduce the structural strength of the wire drawing die, making the inner wall of the mold prone to deformation, affecting the drawing accuracy and the service life of the mold. Summary of the invention

[0005] The purpose of the embodiment of the present invention is to provide a wire drawing die capable of rapidly dissipating heat, which solves the problem of poor heat dissipation effect of existing wire drawing dies.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A wire drawing die capable of rapidly dissipating heat, comprising a die body;

[0008] A heat dissipation groove, which is annular and is opened on the mold body;

[0009] A rotating shell, wherein the rotating shell is movably sleeved on the outer peripheral wall of the mold body;

[0010] A driving assembly, used for driving the rotating shell to rotate;

[0011] The inner circumferential wall of the rotating shell extends toward the center along its radial direction to form a plurality of protrusions, the protrusions are located in the heat dissipation grooves, a first chamber for containing coolant is opened in the rotating shell, a second chamber is opened in the protrusions, and the first chamber is connected to the second chamber.

[0012] As a preferred technical solution, the mold body includes a sizing zone, and the heat dissipation groove is located outside the sizing zone.

[0013] As a preferred technical solution, there is a gap of 0.05mm-0.1mm between the outer wall of the protrusion and the inner wall of the heat dissipation groove;

[0014] A plurality of balls are rotatably mounted in the protrusion, one side of the balls contacts the inner wall of the heat dissipation slot, and the other side extends into the second cavity.

[0015] As a preferred technical solution, the rotating shell and the protrusion are both fan-shaped, and the fan-shaped angle is between 270° and 360°.

[0016] As a preferred technical solution, it also includes a sealing shell, the two ends of which are fixedly connected to the two ends of the rotating shell respectively, the inner circumferential wall of the sealing shell is in contact with the outer circumferential wall of the mold body, and the sealing shell cover is arranged outside the plurality of heat dissipation grooves.

[0017] As a preferred technical solution, it also includes a reflux pipe, one end of which is connected to the bottom of the sealing shell, and the other end of which is connected to the top of the rotating shell.

[0018] As a preferred technical solution, the reflux pipe is spirally wrapped around the outside of the mold body.

[0019] As a preferred technical solution, it also includes a limiting ring, one end of which is fixedly connected to the rotating shell, and the inner circumference of the limiting ring is rotatably connected to the inner wall of the mold body.

[0020] As a preferred technical solution, the driving assembly includes a driving motor, which is fixedly connected to the mold body. The output end of the driving motor is fixedly connected to a driving gear, an internal gear ring is meshed on the surface of the driving gear, and the internal gear ring is fixedly connected to the limiting ring.

[0021] As a preferred technical solution, a feed port is provided on the rotating shell for adding coolant into the first chamber and the second chamber;

[0022] A sealing plug is provided on the feed port.

[0023] By means of the above technical solution, the present invention provides a wire drawing die capable of rapid heat dissipation, which has at least the following beneficial effects:

[0024] (1) The wire drawing die capable of rapid heat dissipation can improve the heat exchange efficiency inside and outside the die by providing a heat dissipation groove on the die body. A rotatable protrusion is provided in the heat dissipation groove. Through the continuous rotation of the protrusion, different parts inside the heat dissipation groove can be filled, so that the stress inside the heat dissipation groove is more balanced, and deformation of the heat dissipation groove is prevented. By providing a rotating shell and providing a chamber connected to the rotating shell and the protrusion, the coolant can be applied to the inner wall of the heat dissipation groove through the rotation of the protrusion, thereby improving the heat dissipation effect.

[0025] (2) The wire drawing die capable of rapid heat dissipation can isolate the protrusion from the heat dissipation groove by arranging a ball on the inner wall of the protrusion, thereby avoiding friction between the protrusion and the heat dissipation groove to increase heat. At the same time, the coolant can be applied to the inner wall of the heat dissipation groove by the rolling of the ball on the inner wall of the heat dissipation groove, thereby improving the heat dissipation effect.

[0026] (3) The wire drawing die capable of rapid heat dissipation has a fan-shaped rotating shell and a raised portion, so that the heat dissipation is always in an unfilled state, thereby providing sufficient space for the coolant to evaporate, thereby improving the heat dissipation effect by absorbing heat through volatilization.

[0027] (4) The wire drawing die capable of rapid heat dissipation can collect the evaporated coolant by providing a sealing shell to prevent the gas from entering the air, thereby improving safety. By providing a reflux pipe, the evaporated coolant can be reintroduced into the first chamber for reflux utilization to avoid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0030] Figure 2 A cross-sectional view of the overall structure in an embodiment of the present invention;

[0031] Figure 3 For the embodiment of the present invention Figure 2 A magnified view of the structure at center;

[0032] Figure 4 is a schematic diagram of a rotating shell in an embodiment of the present invention;

[0033] Figure 5 is a schematic diagram of a heat sink in an embodiment of the present invention;

[0034] Figure 6Schematic diagram of a reflux pipe in an embodiment of the present invention;

[0035] Figure 7 Schematic diagram of a driving component in an embodiment of the present invention.

[0036] In the figure: 1. mold body; 101. heat dissipation groove; 2. rotating shell; 201. protrusion; 202. ball; 203. first chamber; 204. second chamber; 205. feed port; 206. sealing plug; 3. sealing shell; 4. limit ring; 5. reflux pipe; 601. drive motor; 602. drive gear; 603. inner gear ring. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Wire drawing dies refer to various dies for drawing metal wires. During the wire drawing process, the die will generate a lot of heat due to friction and metal deformation. The existing technology dissipates heat by opening holes or inlaying heat-conducting materials. The heat exchange effect inside and outside the die is only slightly improved, and the heat dissipation speed is far less than the speed of heat accumulation inside the die. The heat dissipation effect is poor and cannot meet the needs of improving production efficiency. In addition, opening holes and inlaying other materials inside the die will reduce the structural strength of the wire drawing die, making the inner wall of the die prone to deformation, affecting the accuracy of wire drawing and the service life of the die.

[0039] To do this, see Figure 1-Figure 7 The present invention provides a wire drawing die capable of rapidly dissipating heat.

[0040] The wire drawing die capable of rapid heat dissipation comprises a die body 1, wherein a die hole is arranged at the center of the die body 1. The die hole comprises an inlet area, a diameter-changing area, a sizing area and an outlet area.

[0041] A plurality of annular heat dissipation grooves 101 are provided on the outer peripheral wall of the mold body 1. The heat dissipation grooves 101 are located outside the diameter-changing zone and the sizing zone, and are mainly concentrated outside the sizing zone. (An annular heat dissipation groove 101 is provided on the outer peripheral wall of the mold body 1. The heat dissipation grooves 101 are located outside the sizing zone. During wire drawing, the metal wire shrinks and changes diameter in the diameter-changing zone, and high strength requirements are placed on the diameter-changing zone. The heat dissipation grooves 101 are avoided from being provided outside the diameter-changing zone to prevent the reduction of the wire drawing effect due to heat dissipation.) After the diameter is changed, the metal wire enters the sizing zone, and the outer diameter of the metal wire is consistent with the inner diameter of the sizing zone. During the movement of the metal wire, it continuously rubs against the inner wall of the sizing zone, and heat continuously accumulates. In addition, the heat of the sizing zone and the diameter-changing zone greatly influence each other. By arranging the heat dissipation grooves 101 outside the sizing zone, the heat dissipation effect can be improved while ensuring the strength of the mold.

[0042] In a preferred embodiment, the wire drawing die capable of rapid heat dissipation further comprises a rotating shell 2, which is movably sleeved on the outer peripheral wall of the die body 1, and the inner peripheral wall of the rotating shell 2 extends toward the center along its radial direction to form a plurality of protrusions 201, and the number of the protrusions 201 is the same as the heat dissipation grooves 101. Each protrusion 201 is located in a heat dissipation groove 101, and there is a gap of 0.05mm-0.1mm between the outer wall of the protrusion 201 and the inner wall of the heat dissipation groove 101, so as to avoid friction between the protrusion 201 and the heat dissipation groove 101 and increase of heat when the protrusion 201 rotates.

[0043] Furthermore, a first chamber 203 is provided in the rotating shell 2, and a second chamber 204 is provided in the protruding portion 201, and the first chamber 203 is connected to the second chamber 204. The first chamber 203 is filled with a coolant, and the coolant is filled into a plurality of second chambers 204. A plurality of balls 202 are rotatably installed in the protruding portion 201, and the balls 202 penetrate the protruding portion 201. One side of the balls 202 contacts the inner wall of the heat dissipation groove 101, and the other side extends into the second chamber 204 to contact the coolant. The balls 202 are distributed on the upper, lower, and inner circumference of the protruding portion 201, which can isolate the protruding portion 201 from the heat dissipation groove 101 to prevent the protruding portion 201 from contacting the heat dissipation groove 101. At the same time, when the protruding portion 201 moves in the heat dissipation groove 101, the coolant can be applied to the inner wall of the heat dissipation groove 101 to improve the heat dissipation effect.

[0044] By continuously rotating the protrusion 201 , different parts inside the heat sink 101 can be filled, so that the stress inside the heat sink 101 is more balanced, and deformation of the heat sink 101 is prevented.

[0045] In this embodiment, the rotating shell 2 and the protrusion 201 are both fan-shaped, and the angle is between 270°-360°, so that the protrusion 201 is always in a state of not filling the heat dissipation groove 101. On the one hand, it can increase the contact area between the wire drawing die and the air, and improve the effect of heat exchange between the inside and outside of the die. On the other hand, it can provide sufficient space for the coolant to evaporate, and greatly improve the heat dissipation effect by absorbing heat through liquid evaporation.

[0046] In addition, a feed port 205 is provided on the rotating shell 2 for adding cooling liquid into the first chamber 203 and the second chamber 204 , and a sealing plug 206 is provided on the feed port 205 to prevent liquid leakage.

[0047] In a preferred embodiment, the wire drawing die capable of rapid heat dissipation also includes a sealing shell 3, which is fan-shaped. The two ends of the sealing shell 3 are respectively fixedly connected to the two ends of the rotating shell 2, and the inner circumferential wall of the sealing shell 3 is fitted with the outer circumferential wall of the die body 1. The sealing shell 3 is covered on the outside of multiple heat dissipation grooves 101 to prevent the gas in the heat dissipation grooves 101 from entering the air, thereby improving safety.

[0048] In a preferred embodiment, the wire drawing die capable of rapid heat dissipation further comprises a reflux pipe 5, one end of which is connected to the bottom of the sealing shell 3, and the other end of which is connected to the top of the rotating shell 2, so that the volatilized coolant can re-enter the first chamber 203. The reflux pipe 5 is spirally wound around the outside of the die body 1, thereby increasing the length of the pipe, thereby increasing the cooling time of the gaseous coolant, avoiding bringing high temperature back into the coolant, and thus ensuring the heat dissipation effect.

[0049] In a preferred embodiment, the wire drawing die that can quickly dissipate heat also includes a limit ring 4, which has two limit rings 4. The two limit rings 4 are respectively fixedly connected to the upper and lower ends of the rotating shell 2, and the inner circumference of the limit ring 4 is rotatably connected to the inner wall of the die body 1. The limit ring 4 is preferably a bearing, which can reduce friction while ensuring the limiting effect.

[0050] In a preferred embodiment, the wire drawing die capable of rapid heat dissipation further comprises a driving assembly, which comprises a driving motor 601, the driving motor 601 being fixedly connected to the die body 1, the output end of the driving motor 601 being fixedly connected to a driving gear 602, the surface of the driving gear 602 being meshed with an inner gear ring 603, and the inner gear ring 603 being fixedly connected to the limiting ring 4. The driving motor 601 can drive the driving gear 602 to rotate, and then the meshing of the driving gear 602 and the inner gear ring 603 drives the limiting ring 4 to rotate, and then drives the rotating shell 2 to rotate.

[0051] When the wire drawing die capable of rapid heat dissipation of the present invention is used, the metal wire enters the inside of the die body 1 from the entrance area, changes diameter in the diameter changing area, enters the exit area through the sizing area, and moves out of the die from the end of the exit area. During the wire drawing process, a large amount of heat is generated between the metal wire and the inner wall of the diameter changing area, causing the temperature of the wire drawing die to continue to rise.

[0052] At this time, the metal wire drives the rotating shell 2 to rotate through the driving assembly, and the rotating shell 2 simultaneously drives the multiple protrusions 201 on its inner peripheral wall to rotate inside the heat dissipation groove 101. Since the inner wall of the protrusion 201 is provided with a ball 202, when the protrusion 201 rotates, the ball 202 rolls on the inner wall of the heat dissipation groove 101, thereby avoiding the friction between the protrusion 201 and the heat dissipation groove 101 to increase the heat. A part of the ball 202 is immersed in the coolant in the second chamber 204. During the rolling process of the ball 202, the coolant can be applied to the inner wall of the heat dissipation groove 101, so that the cooling liquid is in direct contact with the inner wall of the mold body 1, thereby improving the heat dissipation effect.

[0053] After the coolant on the inner wall of the heat dissipation groove 101 evaporates, it will directly absorb the heat on the mold body 1, further improving the heat dissipation effect. The evaporated coolant enters the sealed shell 3 to prevent chemical components from entering the air. Subsequently, the volatile coolant enters the first chamber 203 in the rotating shell 2 along the return pipe 5 to be reused, and is cooled in the spiral return pipe 5 to avoid bringing high temperature into the coolant.

[0054] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire drawing die capable of rapid heat dissipation, characterized in that: include: Mold body (1); A heat dissipation groove (101), the heat dissipation groove (101) is annular and is provided on the mold body (1); A rotating shell (2), wherein the rotating shell (2) is movably sleeved on the outer peripheral wall of the mold body (1); A driving assembly, used for driving the rotating shell (2) to rotate; The inner peripheral wall of the rotating shell (2) extends toward the center along its radial direction to form a plurality of protrusions (201), the protrusions (201) are located in the heat dissipation groove (101), a first chamber (203) for containing cooling liquid is provided in the rotating shell (2), a second chamber (204) is provided in the protrusion (201), and the first chamber (203) is communicated with the second chamber (204).

2. The wire drawing die capable of rapid heat dissipation according to claim 1, characterized in that: The mold body (1) comprises a sizing zone, and the heat dissipation groove (101) is located outside the sizing zone.

3. The wire drawing die capable of rapid heat dissipation according to claim 1, characterized in that: There is a gap of 0.05 mm to 0.1 mm between the outer wall of the protruding portion (201) and the inner wall of the heat dissipation groove (101); A plurality of balls (202) are rotatably mounted in the protruding portion (201); one side of the balls (202) is in contact with the inner wall of the heat dissipation groove (101), and the other side extends into the second chamber (204).

4. The wire drawing die capable of rapid heat dissipation according to claim 1, characterized in that: The rotating shell (2) and the protruding portion (201) are both fan-shaped, and the fan-shaped angle is between 270° and 360°.

5. The wire drawing die capable of rapid heat dissipation according to claim 1, characterized in that: It also comprises a sealing shell (3), the two ends of the sealing shell (3) are respectively fixedly connected to the two ends of the rotating shell (2), the inner peripheral wall of the sealing shell (3) is in contact with the outer peripheral wall of the mold body (1), and the sealing shell (3) is covered outside the plurality of heat dissipation grooves (101).

6. The wire drawing die capable of rapid heat dissipation according to claim 5, characterized in that: It also comprises a return pipe (5), one end of which is in communication with the bottom of the sealing shell (3), and the other end of which is in communication with the top of the rotating shell (2).

7. The wire drawing die capable of rapid heat dissipation according to claim 6, characterized in that: The return pipe (5) is spirally wound around the outside of the mold body (1).

8. The wire drawing die capable of rapid heat dissipation according to claim 1, characterized in that: It also comprises a limiting ring (4), one end of which is fixedly connected to the rotating shell (2), and the inner circumference of the limiting ring (4) is rotatably connected to the inner wall of the mold body (1).

9. The wire drawing die capable of rapid heat dissipation according to claim 8, characterized in that: The driving assembly comprises a driving motor (601), wherein the driving motor (601) is fixedly connected to the mold body (1), and an output end of the driving motor (601) is fixedly connected to a driving gear (602), an inner gear ring (603) is meshed on the surface of the driving gear (602), and the inner gear ring (603) is fixedly connected to the limiting ring (4).

10. The wire drawing die capable of rapid heat dissipation according to claim 1, characterized in that: The rotating shell (2) is provided with a feed port (205) for adding cooling liquid into the first chamber (203) and the second chamber (204); The feed port (205) is provided with a sealing plug (206).

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