Hard alloy extrusion die with rapid heat dissipation function

Abstract

The utility model discloses a hard alloy extrusion die with a quick heat dissipation function, which relates to the technical field of hard alloy bar extrusion forming and comprises a die body and a cooling liquid channel arranged in the die body, a heat dissipation component is connected with the cooling liquid channel, and a delivery pump is arranged between the heat dissipation component and the cooling liquid channel. The backflow pipe is arranged between the heat dissipation assembly and the cooling liquid channel, and cooling liquid circularly flows among the cooling liquid channel, the heat dissipation assembly, the conveying pump and the backflow pipe; according to the hard alloy extrusion die with the rapid heat dissipation function, through the built-in cooling liquid channel and the external heat dissipation assembly, rapid heat dissipation of the die body can be achieved, the phenomenon that in the extrusion process, an extrusion forming agent still rises along with the temperature of an extrusion die body for extrusion feeding is avoided, and therefore the material uniformity of an extrusion rod is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hard alloy bar stock extrusion forming technical field, specifically to a kind of hard alloy extrusion die with quick heat dissipation function. BACKGROUND

[0002] Hard alloy industry is in production round bar, extrusion process is widely applied due to its uniform material, not prone to delamination crack and wide model range. However, in the extrusion process, the friction between extrusion feed and mold body can cause temperature rise, so that the extrusion forming agent becomes soft with temperature rise, thereby affecting the uniformity of material in the axial direction of extruded rod and extrusion speed. In order to solve this problem, the industry usually sets the extrusion forming room as a constant temperature and humidity room, and the temperature is kept at 20-25℃ for a long time, but the extrusion die is wrapped by the extruder, and it is difficult to achieve rapid heat dissipation. The temperature of the extrusion die is still rising with the extrusion of the extrusion feed during the extrusion process, so that the uniformity of the material in the axial direction of the extruded rod is difficult to effectively improve. SUMMARY

[0003] The utility model aims at providing a kind of hard alloy extrusion die with quick heat dissipation function, the hard alloy extrusion die with quick heat dissipation function of this kind can realize the rapid heat dissipation of mold body by built-in cooling liquid channel and external heat dissipation component, avoid the phenomenon that the temperature of the extrusion die is still rising with the extrusion of the extrusion feed during the extrusion process, so as to improve the uniformity of the material of extruded rod.

[0004] The above optimization structure of the utility model is realized by the following technical scheme: a kind of hard alloy extrusion die with quick heat dissipation function, including mold body, further including cooling liquid channel, the cooling liquid channel is located in the mold body;

[0005] Heat dissipation component, the heat dissipation component is connected with the cooling liquid channel;

[0006] Delivery pump, the delivery pump is located between the heat dissipation component and the cooling liquid channel;

[0007] Return pipe, the return pipe is located between the heat dissipation component and the cooling liquid channel, cooling liquid circulates between the cooling liquid channel, the heat dissipation component, the delivery pump and the return pipe.

[0008] In some embodiments, the mold body includes an extrusion inner die;

[0009] Mold outer sleeve, the mold outer sleeve is coaxially sleeved in the extrusion inner die;

[0010] A plurality of flow grooves are arranged along the axis of the mold jacket and are arranged on the inner wall of the mold jacket, and the cooling liquid channels are arranged between the plurality of flow grooves.

[0011] In some embodiments, the cooling liquid channel comprises a plurality of flow rings arranged in the flow grooves and coaxially sleeved on the extrusion inner mold.

[0012] An inlet pipe is connected to the plurality of flow rings and is connected to the return pipe.

[0013] An outlet pipe is connected to the plurality of flow rings and is connected to the delivery pump.

[0014] In some embodiments, the heat dissipation assembly comprises a heat dissipation member connected to the delivery pump and the return pipe.

[0015] A heat dissipation fan has a blowing port facing the heat dissipation member.

[0016] In some embodiments, the heat dissipation member comprises a heat dissipation housing.

[0017] A cold liquid flow passage is arranged at the top of the heat dissipation housing and is connected to the return pipe.

[0018] A hot liquid flow passage is arranged at the bottom of the heat dissipation housing and is connected to the delivery pump.

[0019] A partition plate is arranged between the cold liquid flow passage and the hot liquid flow passage.

[0020] A communication area is arranged on one side of the heat dissipation housing and is in communication with the cold liquid flow passage and the hot liquid flow passage.

[0021] In some embodiments, the cold liquid flow passage comprises a cold liquid storage tank connected to the return pipe.

[0022] A plurality of cold liquid flow channels are arranged in parallel between the cold liquid storage tank and the communication area.

[0023] In some embodiments, the hot liquid flow passage comprises a hot liquid storage tank connected to the delivery pump.

[0024] A plurality of hot liquid flow channels are arranged in parallel between the hot liquid storage tank and the communication area.

[0025] In some embodiments, the heat dissipation housing is provided with a plurality of heat dissipation fins.

[0026] In summary, the utility model has the following beneficial effects:

[0027] The hard alloy extrusion die with the rapid heat dissipation function realizes the circulation flow of the cooling liquid between the extrusion inner die and the die outer sleeve through the built-in cooling liquid channel, so that the heat exchange between the cooling liquid and the die body is realized, the rapid heat dissipation of the cooling liquid is realized through the external heat dissipation assembly, the cooled cooling liquid is flowed back to the cooling liquid channel through the backflow pipe, the circulation flow of the cooling liquid in the cooling liquid channel and the heat dissipation assembly is realized, and then the rapid heat dissipation of the die body is realized, the phenomenon that the extrusion molding agent temperature is increased along with the extrusion die body in the extrusion process is avoided, and thus the material uniformity of the extrusion rod is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structural schematic view of the utility model;

[0029] Figure 2 It is a connection sectional view of the flow ring and the die body of the utility model;

[0030] Figure 3 It is a structural schematic view of the utility model Figure 2 It is an enlarged view of A in the utility model;

[0031] Figure 4 It is a structural schematic view of the heat dissipation assembly removing the heat dissipation fan of the utility model.

[0032] In the drawing: 1, die body; 11, extrusion inner die; 12, die outer sleeve; 13, flow groove; 2, cooling liquid channel; 21, flow ring; 22, liquid inlet pipe; 23, liquid outlet pipe; 3, heat dissipation assembly; 31, heat dissipation fan; 32, cold liquid flow area; 321, cold liquid storage groove; 322, cold liquid flow channel; 33, hot liquid flow area; 331, hot liquid storage groove; 332, hot liquid flow channel; 34, partition plate; 35, communication area; 36, heat dissipation shell; 4, delivery pump; 5, backflow pipe. DETAILED DESCRIPTION

[0033] The technical scheme 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. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0034] Reference Figures 1-4The utility model provides an extrusion die of hard alloy with quick heat dissipation function, including die body 1, cooling liquid channel 2, heat dissipation component 3, delivery pump 4, backflow pipe 5, die body 1 is used with extruder, can carry out the extrusion forming of hard alloy, cooling liquid channel 2 is located in die body 1, heat dissipation component 3 is connected with cooling liquid channel 2, delivery pump 4 is located between heat dissipation component 3 and cooling liquid channel 2, can provide the flow power of cooling liquid between heat dissipation component 3 and cooling liquid channel 2, backflow pipe 5 is located between heat dissipation component 3 and cooling liquid channel 2, cooling liquid circulates and flow between cooling liquid channel 2, heat dissipation component 3, delivery pump 4 and backflow pipe 5, cooling liquid can be the cooling liquid (such as glycol aqueous solution) of high specific heat capacity, exchanges heat with die body 1 through the cooling liquid in cooling liquid channel 2, can take away the heat generated in the work of die body 1, drives through delivery pump 4, after cooling liquid comes out from die body 1, enters heat dissipation component 3, heat dissipation component 3 conducts the heat of cooling liquid into air, realizes the conversion of cooling liquid from hot liquid to cold liquid, again through backflow pipe 5, the cooled cooling liquid is sent back to die body 1, opens a new round of cooling circulation. Ultimately realizes the temperature of extrusion process and environment is consistent (namely with the temperature 20~25 DEG C of constant temperature and humidity room temperature is consistent), will not appear extrusion heat and thus affect the phenomenon of hard alloy extrusion bar extrusion speed, thereby help to keep the uniformity of material in the axial direction of extrusion bar.

[0035] In some embodiments, the die body 1 includes an extrusion inner die 11, a die outer sleeve 12, and a plurality of flow-through grooves 13. The extrusion inner die 11 is used to form an inner cavity of the extrusion bar. The die outer sleeve 12 is coaxially sleeved on the extrusion inner die 11 and is used to support and fix the extrusion inner die 11. The plurality of flow-through grooves 13 are arranged along the axis of the die outer sleeve 12 and are arranged on the inner wall of the die outer sleeve 12. The cooling liquid channel 2 is arranged between the plurality of flow-through grooves 13.

[0036] In some embodiments, the cooling liquid channel 2 includes a plurality of flow rings 21, an inlet pipe 22, and an outlet pipe 23. The flow rings 21 are arranged in the flow-through grooves 13 and are coaxially sleeved on the extrusion inner die 11, so as to realize heat exchange between the cooling liquid and the extrusion inner die 11 and the die outer sleeve 12. The inlet pipe 22 is connected with the plurality of flow rings 21 and is connected with the backflow pipe 5. The outlet pipe 23 is connected with the plurality of flow rings 21 and is connected with the delivery pump 4. Through the inlet pipe 22 and the outlet pipe 23, the circulation of the cooling liquid can be realized.

[0037] In some embodiments, the heat dissipation component 3 includes a heat dissipation member and a heat dissipation fan 31. The heat dissipation member is connected with the delivery pump 4 and the backflow pipe 5 and is used for heat dissipation of the cooling liquid. The blowing port of the heat dissipation fan 31 faces the heat dissipation member, so as to accelerate heat dissipation of the heat dissipation member.

[0038] In some embodiments, the heat dissipation device comprises a heat dissipation shell 36, a cold liquid flow passage 32, a hot liquid flow passage 33, a partition plate 34, and a communication area 35. The heat dissipation shell 36 can contain cooling liquid. The cold liquid flow passage 32 is arranged at the top of the heat dissipation shell 36 and connected with the return pipe 5. The hot liquid flow passage 33 is arranged at the bottom of the heat dissipation shell 36 and connected with the delivery pump 4. The partition plate 34 is arranged between the cold liquid flow passage 32 and the hot liquid flow passage 33 and can separate the cooling liquid flowing in the hot liquid flow passage 33 and the cold liquid flow passage 32. The communication area 35 is arranged at one side of the heat dissipation shell 36 and connected with the cold liquid flow passage 32 and the hot liquid flow passage 33, so as to realize the flow of cooling liquid from the hot liquid flow passage 33 to the cold liquid flow passage 32.

[0039] In some embodiments, the cold liquid flow passage 32 comprises a cold liquid storage groove 321 and a plurality of cold liquid flow channels 322. The cold liquid storage groove 321 can store cooled cooling liquid and provide certain flow power for the return flow of cooling liquid. The cold liquid storage groove 321 is connected with the return pipe 5. The plurality of cold liquid flow channels 322 are arranged in parallel. The cold liquid flow channels 322 can be six. The cold liquid flow channels 322 are arranged between the cold liquid storage groove 321 and the communication area 35.

[0040] In some embodiments, the hot liquid flow passage 33 comprises a hot liquid storage groove 331 and a plurality of hot liquid flow channels 332. The hot liquid storage groove 331 is connected with the delivery pump 4 and used for storing the cooling liquid delivered by the delivery pump 4 and providing certain power for the flow of cooling liquid in the plurality of hot liquid flow channels 332. The plurality of hot liquid flow channels 332 are arranged in parallel. The hot liquid flow channels 332 can be six. The hot liquid flow channels 332 are arranged between the hot liquid storage groove 331 and the communication area 35, so as to accelerate the flow speed of cooling liquid in the hot liquid flow passage 33 and improve the flow heat dissipation effect.

[0041] In some embodiments, a plurality of heat dissipation fins are arranged on the heat dissipation shell 36. Through cooperation with the heat dissipation fan 31, the heat dissipation of the heat dissipation device can be accelerated and the heat dissipation effect of the heat dissipation device can be improved.

[0042] The specific working principle is as follows:

[0043] During the extrusion process, the cooling liquid in the cooling liquid channel 2 exchanges heat with the die body 1, absorbs part of the heat generated by the die body 1 during work, and through the driving of the delivery pump 4, the cooling liquid flows out from the liquid outlet pipe 23 into the hot liquid storage tank 331 in the heat dissipation assembly 3, and enters the communication area 35 through the plurality of hot liquid flow channels 332, in the process, the heat dissipation fan 31 blows air to the heat dissipation shell 36, thereby accelerating the heat dissipation of the cooling liquid in the hot liquid flow channel 332, realizing the preliminary heat dissipation of the cooling liquid, and the cooling liquid in the communication area 35 flows to the cold liquid storage tank 321 through the plurality of cold liquid flow channels 322, in the process, the cooling liquid flowing in the cold liquid flow channel 322 realizes the secondary heat dissipation of the cooling liquid under the joint action of the heat dissipation fan 31 and the heat dissipation shell 36, and flows back to the cooling liquid channel 2 through the backflow pipe 5 and the liquid inlet pipe 22, forming the circulation flow of the cooling liquid.

[0044] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hard metal extrusion die with a rapid heat dissipation function, comprising a die body (1), characterized in that: Further comprising a cooling liquid channel (2) arranged in the mold body (1); A heat dissipation assembly (3) connected with the cooling liquid channel (2); A delivery pump (4) arranged between the heat dissipation assembly (3) and the cooling liquid channel (2); A return pipe (5) arranged between the heat dissipation assembly (3) and the cooling liquid channel (2), and the cooling liquid channel (2), the heat dissipation assembly (3), the delivery pump (4) and the return pipe (5) circulate cooling liquid.

2. The carbide extrusion die with the rapid heat dissipation function according to claim 1, characterized in that: The mold body (1) comprises an extrusion inner mold (11); A mold outer sleeve (12) coaxially sleeved on the extrusion inner mold (11); A plurality of flow-through grooves (13) arranged along the axis of the mold outer sleeve (12) and arranged on the inner wall of the mold outer sleeve (12), and the cooling liquid channel (2) is arranged between the plurality of flow-through grooves (13).

3. The carbide extrusion die with the rapid heat dissipation function according to claim 2, characterized in that: The cooling liquid channel (2) comprises a plurality of flow rings (21) arranged in the flow-through grooves (13) and coaxially sleeved on the extrusion inner mold (11); An inlet pipe (22) connected with the plurality of flow rings (21) and connected with the return pipe (5); An outlet pipe (23) connected with the plurality of flow rings (21) and connected with the delivery pump (4).

4. The carbide extrusion die with quick heat dissipation function according to claim 1, characterized in that: The heat dissipation assembly (3) comprises a heat dissipation member connected with the delivery pump (4) and the return pipe (5); A heat dissipation fan (31) with a blowing port facing the heat dissipation member.

5. The carbide extrusion die with quick heat dissipation function according to claim 4, characterized in that: The heat dissipation member comprises a heat dissipation housing (36); A cold liquid flow-through area (32) arranged at the top of the heat dissipation housing (36) and connected with the return pipe (5); A hot liquid flow-through area (33) arranged at the bottom of the heat dissipation housing (36) and connected with the delivery pump (4); A partition plate (34) arranged between the cold liquid flow-through area (32) and the hot liquid flow-through area (33); A communication area (35) arranged on one side of the heat dissipation housing (36) and in communication with the cold liquid flow-through area (32) and the hot liquid flow-through area (33).

6. The carbide extrusion die with quick heat dissipation function according to claim 5, characterized in that: The cold liquid flow-through area (32) comprises a cold liquid storage groove (321) connected with the return pipe (5); A plurality of cold liquid flow channels (322) arranged in parallel, the cold liquid flow channels (322) being arranged between the cold liquid storage groove (321) and the communication area (35).

7. The carbide extrusion die with quick heat dissipation function according to claim 5, characterized in that: The hot liquid flow-through area (33) comprises a hot liquid storage groove (331) connected with the delivery pump (4); A plurality of hydrothermal flow channels (332) are arranged in parallel, and the hydrothermal flow channels (332) are arranged between the hydrothermal storage tank (331) and the communication area (35).

8. The carbide extrusion die with quick heat dissipation function according to claim 5, characterized in that: The heat dissipation shell (36) is provided with a plurality of heat dissipation fins.

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