Cooling device for drawing die of inverted wire drawing machine

Abstract

The utility model discloses a cooling device for a drawing die of an inverted wire drawing machine and relates to the technical field of non-ferrous metal drawing processing. In order to solve the problems that in the existing wire rod machining process through a drawing machine, a wire rod cannot be effectively and properly cooled, due to the fact that high temperature is generated in the wire rod drawing process, the wire rod is prone to being bonded with the surface of a winding drum, the wire rod is damaged, and then the percent of pass of the wire rod is low, and the machining efficiency is low. The two ends of the interior of the cooling box are each provided with one drawing die, the oil inlet hole is machined in the center of the upper surface of the cooling box, lubricating oil gradually drips on the outer surface of a wire rod through the oil inlet hole in the wire rod drawing process, primary cooling is formed, and after the lubricating oil passes through the first drawing die, secondary cooling is achieved; the seven water chambers are arranged on the two side faces of the cooling box in the circumferential direction respectively, spiral condensate water flow is formed, wires can be effectively cooled, the percent of pass of the wires is increased, and the machining efficiency is improved. The non-ferrous metal drawing device is suitable for the field of non-ferrous metal drawing processing.

Description

Technical Field

[0001] The utility model relates to the technical field of non-ferrous metal drawing processing, and particularly relates to a drawing die cooling device for an inverted wire drawing machine. Background Art

[0002] In recent years, with the continuous development of technology and the expansion of material applications, the requirements for materials have become higher and higher, especially the surface quality requirements for wire rods are more stringent. When wire rods are drawn, a large amount of heat is generated, making the wire rods soft. At this time, when the wire rods pass through the coiling drum and are coiled, it is extremely easy to bond aluminum to the surface of the coiling drum. The bonded coiling drum will continuously scratch the wire rods. Therefore, the temperature rise must be strictly controlled during the drawing process. Currently, during the drawing process of existing aluminum wire rods, the temperature rise is too high, and it is easy to bond aluminum to the surface of the coiling drum, thereby damaging the surface of the wire rods.

[0003] To sum up, during the process of processing existing wire rods by a wire drawing machine, the wire rods cannot be effectively cooled properly. Due to the high temperature generated during the drawing process of the wire rods, they are easy to bond to the surface of the coiling drum, resulting in damage to the wire rods, and further leading to a low qualification rate of the wire rods and a low processing efficiency. Summary of the Utility Model

[0004] The utility model aims to solve the problems that during the process of processing existing wire rods by a wire drawing machine, the wire rods cannot be effectively cooled properly. Due to the high temperature generated during the drawing process of the wire rods, they are easy to bond to the surface of the coiling drum, resulting in damage to the wire rods, and further leading to a low qualification rate of the wire rods and a low processing efficiency, and provides a drawing die cooling device for an inverted wire drawing machine.

[0005] A drawing die cooling device for an inverted wire drawing machine of the utility model comprises a die locking sleeve 1, a frame 3, an O-ring 4, a drawing die 6, a cooling box 7, a round nut 8, a retaining washer 9, a positioning sleeve 10 and a support baffle 11.

[0006] A cooling box 7 is provided at the center inside the frame 3. A through hole is machined along the length direction at the lower part of the side surface of the cooling box 7. An oil inlet hole E-2 is machined at the center of the upper surface of the cooling box 7, and the oil inlet hole E-2 is communicated with the through hole. Drawing dies 6 are respectively provided at the openings on both sides of the cooling box 7. An O-ring 4 is sleeved on one end of the outer surface of the drawing die 6. A die locking sleeve 1 is provided at the output end of the drawing die 6 at the opening on one side of the cooling box 7. A support baffle 11 is provided at one end inside the frame 3. A through hole is machined on the side surface of the support baffle 11. After one end of the positioning sleeve 10 passes through the through hole on the support baffle 11, it is fixedly connected to the input end of the drawing die 6 at the opening on the other side of the cooling box 7. And the fixing ring in the middle of the outer surface of the positioning sleeve 10 is fixedly connected to the support baffle 11 through a round nut 8 and a retaining washer 9.

[0007] Further, one gland 5 is provided on each of the two sides of the cooling tank 7, and the gland 5 is fixedly connected to the side of the cooling tank 7 by bolts;

[0008] Further, on one side of the cooling tank 7, a first water chamber A-1, a second water chamber A-2, a third water chamber A-3, a fourth water chamber A-4, a fifth water chamber A-5, a sixth water chamber A-6, and a seventh water chamber A-7 are successively machined along the circumferential direction. The sixth water chamber A-6 and the seventh water chamber A-7 are connected through a first water channel C-1, the fourth water chamber A-4 and the fifth water chamber A-5 are connected through a second water channel C-2, and the second water chamber A-2 and the third water chamber A-3 are connected through a third water channel C-3;

[0009] Further, on the other side of the cooling tank 7, an eighth water chamber B-1, a ninth water chamber B-2, a tenth water chamber B-3, an eleventh water chamber B-4, a twelfth water chamber B-5, a thirteenth water chamber B-6, and a fourteenth water chamber B-7 are successively machined along the circumferential direction. The eighth water chamber B-1 and the ninth water chamber B-2 are connected through a fourth water channel D-1, the tenth water chamber B-3 and the eleventh water chamber B-4 are connected through a fifth water channel D-2, and the twelfth water chamber B-5 and the thirteenth water chamber B-6 are connected through a sixth water channel D-3;

[0010] Further, a water inlet E-1 is provided at one end of the upper surface of the cooling tank 7, and the water inlet E-1 is connected to the inside of the first water chamber A-1. A water return port E-3 is provided at the other end of the upper surface of the cooling tank 7, and the water return port E-3 is connected to the inside of the fourteenth water chamber B-7;

[0011] Further, the first water chamber A-1 is connected to the inside of the eighth water chamber B-1 through a pipeline, the ninth water chamber B-2 is connected to the inside of the second water chamber A-2 through a pipeline, the third water chamber A-3 is connected to the inside of the tenth water chamber B-3 through a pipeline, the eleventh water chamber B-4 is connected to the inside of the fourth water chamber A-4 through a pipeline, the fifth water chamber A-5 is connected to the inside of the twelfth water chamber B-5 through a pipeline, the thirteenth water chamber B-6 is connected to the inside of the sixth water chamber A-6 through a pipeline, and the seventh water chamber A-7 is connected to the inside of the fourteenth water chamber B-7 through a pipeline;

[0012] Further, an oil discharge hole is machined at the center of the lower surface of the cooling tank 7, and the oil discharge hole is connected to the inside of the through hole on the side of the cooling tank 7;

[0013] Further, two oil return holes are evenly provided on the side of the frame 3 along the length direction;

[0014] Further, during use, first fix the positioning sleeve 10 on the support baffle 11 through the round nut 8 and the stop washer 9. Install a drawing die 6 at each of the two inner ends of the cooling box 7. Install the upper die locking sleeve 1 at the output end of the drawing die 6 at the opening on one side of the cooling box 7. Connect the end of the positioning sleeve 10 to the input end of the drawing die 6 at the opening on the other side of the cooling box 7. Install a gland 5 on each of the two sides of the cooling box 7, and seal the end face of the cooling box 7 and the gland 5 through a sealant layer;

[0015] Wire drawing process: When drawing the wire 2, lubricating oil drips onto the surface of the wire through the lubricating oil port on the positioning sleeve 10. The oil plays a role in lubricating and cooling when the wire passes through the first drawing die 6. The wire 2 enters the second drawing die 6 through the inner cavity of the cooling box 7, and lubricating oil drips onto the surface of the wire 2 through the oil inlet hole E-2 on the cooling box 7. The function of the lubricating oil is the same as that in the previous pass; the remaining oil is discharged through the oil drain hole on the cooling box 7;

[0016] During the wire drawing process, the flow direction of the condensed water in the cooling box 7 is as follows: water inlet E-1 — No. 1 water chamber A-1 — No. 8 water chamber B-1 — No. 4 water channel D-1 — No. 9 water chamber B-2 — No. 2 water chamber A-2 — No. 3 water channel C-3 — No. 3 water chamber A-3 — No. 10 water chamber B-3 — No. 5 water channel D-2 — No. 11 water chamber B-4 — No. 4 water chamber A-4 — No. 2 water channel C-2 — No. 5 water chamber A-5 — No. 12 water chamber B-5 — No. 6 water channel D-3 — No. 13 water chamber B-6 — No. 6 water chamber A-6 — No. 1 water channel C-1 — No. 7 water chamber A-7 — No. 14 water chamber B-7 — water return port E-3.

[0017] The utility model has the following beneficial effects compared with the prior art:

[0018] The utility model overcomes the shortcomings of the prior art. A drawing die is installed at each of the two inner ends of the cooling box, and an oil inlet hole is processed in the center of the upper surface of the cooling box. During the wire drawing process, the lubricating oil gradually drips onto the outer surface of the wire through the oil inlet hole, forming a preliminary cooling. After passing through the first drawing die, by using seven water chambers arranged circumferentially on each of the two sides of the cooling box, the condensed water passes through the water inlet — No. 1 water chamber — No. 8 water chamber — No. 4 water channel — No. 9 water chamber — No. 2 water chamber — No. 3 water channel — No. 3 water chamber — No. 10 water chamber — No. 5 water channel — No. 11 water chamber — No. 4 water chamber — No. 2 water channel — No. 5 water chamber — No. 12 water chamber — No. 6 water channel — No. 13 water chamber — No. 6 water chamber — No. 1 water channel C-1 — No. 7 water chamber — No. 14 water chamber — water return port, thus forming a spiral condensed water flow, which can effectively cool the wire, thereby avoiding the phenomenon of adhesion to the surface of the reel, and further improving the qualified rate of the wire and the processing efficiency. Description of the Drawings

[0019] Figure 1It is the top view of a cooling device for a drawing die of an inverted wire drawing machine according to the present utility model;

[0020] Figure 2 It is Figure 1 the D-D half-sectional view of a cooling device for a drawing die of an inverted wire drawing machine according to the present utility model;

[0021] Figure 3 It is Figure 2 the E-E side sectional view of a cooling device for a drawing die of an inverted wire drawing machine according to the present utility model;

[0022] Figure 4 It is Figure 2 the F-F side sectional view of a cooling device for a drawing die of an inverted wire drawing machine according to the present utility model;

[0023] Figure 5 It is the left side view of the cooling box in a cooling device for a drawing die of an inverted wire drawing machine according to the present utility model;

[0024] Figure 6 It is the right side view of the cooling box in a cooling device for a drawing die of an inverted wire drawing machine according to the present utility model;

[0025] Figure 7 It is the side sectional view of the cooling box in a cooling device for a drawing die of an inverted wire drawing machine according to the present utility model;

[0026] Figure 8 It is the top view of the cooling box in a cooling device for a drawing die of an inverted wire drawing machine according to the present utility model;

[0027] Figure 9 It is the three-dimensional structure schematic diagram of the cooling box in a cooling device for a drawing die of an inverted wire drawing machine according to the present utility model. Detailed implementation manners

[0028] Detailed implementation manner one: With reference to Figures 1 to 9 this implementation manner is described. A cooling device for a drawing die of an inverted wire drawing machine described in this implementation manner includes a die locking sleeve 1, a frame 3, an O-ring 4, a drawing die 6, a cooling box 7, a round nut 8, a stop washer 9, a positioning sleeve 10, and a support baffle 11;

[0029] There is a cooling box 7 provided at the center inside the frame 3. Through holes are machined along the length direction at the lower part of the side surface of the cooling box 7. An oil inlet hole E-2 is machined at the center of the upper surface of the cooling box 7, and the oil inlet hole E-2 is communicated with the through holes. Drawing dies 6 are respectively provided at the openings on both sides of the cooling box 7. An O-ring seal 4 is sleeved on one end of the outer surface of the drawing die 6. A die locking sleeve 1 is provided at the output end of the drawing die 6 at the opening on one side of the cooling box 7. A support baffle 11 is provided at one end inside the frame 3. Through holes are machined on the side surface of the support baffle 11. After one end of the positioning sleeve 10 passes through the through holes on the support baffle 11, it is fixedly connected to the input end of the drawing die 6 at the opening on the other side of the cooling box 7, and the fixing ring in the middle of the outer surface of the positioning sleeve 10 is fixedly connected to the support baffle 11 through a round nut 8 and a stop washer 9;

[0030] In this specific embodiment, during use, first, the positioning sleeve 10 is fixed on the support baffle 11 through the round nut 8 and the stop washer 9. Drawing dies 6 are respectively installed at both ends inside the cooling box 7. A die locking sleeve 1 is installed at the output end of the drawing die 6 at the opening on one side of the cooling box 7. The end of the positioning sleeve 10 is connected to the input end of the drawing die 6 at the opening on the other side of the cooling box 7. Gland covers 5 are respectively provided on the two side surfaces of the cooling box 7. The cooling box 7 end face and the gland cover 5 are sealed through a sealant layer;

[0031] Wire drawing process: When the wire 2 is drawn, lubricating oil drips onto the wire surface through the lubricating oil port on the positioning sleeve 10. The oil plays a role in lubricating and cooling when the wire passes through the first drawing die 6. The wire 2 enters the second drawing die 6 through the inner cavity of the cooling box 7. Lubricating oil drips onto the wire 2 surface through the oil inlet hole E-2 on the cooling box 7. The function of the lubricating oil is the same as that in the previous pass; The remaining oil is discharged through the oil discharge hole on the cooling box 7;

[0032] During the wire drawing process, the flow direction of the condensed water in the cooling box 7 is: water inlet E-1 — first water chamber A-1 — eighth water chamber B-1 — fourth water channel D-1 — ninth water chamber B-2 — second water chamber A-2 — third water channel C-3 — third water chamber A-3 — tenth water chamber B-3 — fifth water channel D-2 — eleventh water chamber B-4 — fourth water chamber A-4 — second water channel C-2 — fifth water chamber A-5 — twelfth water chamber B-5 — sixth water channel D-3 — thirteenth water chamber B-6 — sixth water chamber A-6 — first water channel C-1 — seventh water chamber A-7 — fourteenth water chamber B-7 — water return port E-3.

[0033] Specific embodiment two: Combine Figures 1 to 8Description of this embodiment: This embodiment further limits the cooling device described in the first specific embodiment. For an inverted wire drawing machine drawing die cooling device described in this embodiment, one gland 5 is provided on each of the two sides of the cooling box 7, and the gland 5 is fixedly connected to the side of the cooling box 7 by bolts.

[0034] Specific embodiment three: Combine Figures 1 to 8 Description of this embodiment: This embodiment further limits the cooling device described in the second specific embodiment. For an inverted wire drawing machine drawing die cooling device described in this embodiment, on one side of the cooling box 7, a first water chamber A-1, a second water chamber A-2, a third water chamber A-3, a fourth water chamber A-4, a fifth water chamber A-5, a sixth water chamber A-6, and a seventh water chamber A-7 are successively machined along the circumferential direction. The sixth water chamber A-6 and the seventh water chamber A-7 are connected and arranged through a first water channel C-1. The fourth water chamber A-4 and the fifth water chamber A-5 are connected and arranged through a second water channel C-2. The second water chamber A-2 and the third water chamber A-3 are connected and arranged through a third water channel C-3.

[0035] Specific embodiment four: Combine Figures 1 to 8 Description of this embodiment: This embodiment further limits the cooling device described in the third specific embodiment. For an inverted wire drawing machine drawing die cooling device described in this embodiment, on the other side of the cooling box 7, an eighth water chamber B-1, a ninth water chamber B-2, a tenth water chamber B-3, an eleventh water chamber B-4, a twelfth water chamber B-5, a thirteenth water chamber B-6, and a fourteenth water chamber B-7 are successively machined along the circumferential direction. The eighth water chamber B-1 and the ninth water chamber B-2 are connected and arranged through a fourth water channel D-1. The tenth water chamber B-3 and the eleventh water chamber B-4 are connected and arranged through a fifth water channel D-2. The twelfth water chamber B-5 and the thirteenth water chamber B-6 are connected and arranged through a sixth water channel D-3.

[0036] Specific embodiment five: Combine Figures 1 to 8 Description of this embodiment: This embodiment further limits the cooling device described in the fourth specific embodiment. For an inverted wire drawing machine drawing die cooling device described in this embodiment, at one end of the upper surface of the cooling box 7, a water inlet E-1 is provided, and the water inlet E-1 is connected and arranged inside the first water chamber A-1. At the other end of the upper surface of the cooling box 7, a water return port E-3 is provided, and the water return port E-3 is connected and arranged inside the fourteenth water chamber B-7.

[0037] Specific embodiment six: Combine Figures 1 to 8To describe this embodiment, this embodiment further limits the cooling device described in the fifth specific embodiment. For an inverted wire drawing machine drawing die cooling device described in this embodiment, the first water chamber A-1 is internally connected to the eighth water chamber B-1 through a pipeline; the ninth water chamber B-2 is internally connected to the second water chamber A-2 through a pipeline; the third water chamber A-3 is internally connected to the tenth water chamber B-3 through a pipeline; the eleventh water chamber B-4 is internally connected to the fourth water chamber A-4 through a pipeline; the fifth water chamber A-5 is internally connected to the twelfth water chamber B-5 through a pipeline; the thirteenth water chamber B-6 is internally connected to the sixth water chamber A-6 through a pipeline; the seventh water chamber A-7 is internally connected to the fourteenth water chamber B-7 through a pipeline;

[0038] In this specific embodiment, with this structure, during the wire drawing process, the flow direction of the condensed water in the cooling tank 7 is: water inlet E-1 - first water chamber A-1 - eighth water chamber B-1 - fourth water channel D-1 - ninth water chamber B-2 - second water chamber A-2 - third water channel C-3 - third water chamber A-3 - tenth water chamber B-3 - fifth water channel D-2 - eleventh water chamber B-4 - fourth water chamber A-4 - second water channel C-2 - fifth water chamber A-5 - twelfth water chamber B-5 - sixth water channel D-3 - thirteenth water chamber B-6 - sixth water chamber A-6 - first water channel C-1 - seventh water chamber A-7 - fourteenth water chamber B-7 - water return port E-3, thus forming a spiral condensed water flow, which can effectively cool the wire rod, thereby avoiding the phenomenon of adhesion to the surface of the reel, and further improving the qualification rate of the wire rod and the processing efficiency.

[0039] Specific embodiment seven: Combine Figures 1 to 8 To describe this embodiment, this embodiment further limits the cooling device described in the first specific embodiment. For an inverted wire drawing machine drawing die cooling device described in this embodiment, an oil discharge hole is processed at the center of the lower surface of the cooling tank 7, and the oil discharge hole is internally connected to the through hole on the side surface of the cooling tank 7.

[0040] Specific embodiment eight: Combine Figures 1 to 8 To describe this embodiment, this embodiment further limits the cooling device described in the first specific embodiment. For an inverted wire drawing machine drawing die cooling device described in this embodiment, two oil return holes are evenly arranged along the length direction on the side surface of the frame 3.

[0041] Working principle

[0042] In use, first, the positioning sleeve 10 is fixed on the support baffle 11 through the round nut 8 and the stop washer 9. A drawing die 6 is installed at each of the two inner ends of the cooling box 7. An upper die locking sleeve 1 is installed at the output end of the drawing die 6 at the opening on one side of the cooling box 7. The end of the positioning sleeve 10 is connected to the input end of the drawing die 6 at the opening on the other side of the cooling box 7. A gland 5 is provided on each of the two sides of the cooling box 7. The end face of the cooling box 7 and the gland 5 are sealed through a sealant layer.

[0043] Wire drawing process: When the wire 2 is drawn, lubricating oil drips onto the surface of the wire through the lubricating oil port on the positioning sleeve 10. The oil plays a role in lubricating and cooling when the wire passes through the first drawing die 6. The wire 2 enters the second drawing die 6 through the inner cavity of the cooling box 7. Lubricating oil drips onto the surface of the wire 2 through the oil inlet hole E-2 on the cooling box 7. The function of the lubricating oil is the same as that in the previous pass. The remaining oil is discharged through the oil drain hole on the cooling box 7.

[0044] During the wire drawing process, the flow direction of the condensed water in the cooling box 7 is as follows: water inlet E-1 — first water chamber A-1 — eighth water chamber B-1 — fourth water channel D-1 — ninth water chamber B-2 — second water chamber A-2 — third water channel C-3 — third water chamber A-3 — tenth water chamber B-3 — fifth water channel D-2 — eleventh water chamber B-4 — fourth water chamber A-4 — second water channel C-2 — fifth water chamber A-5 — twelfth water chamber B-5 — sixth water channel D-3 — thirteenth water chamber B-6 — sixth water chamber A-6 — first water channel C-1 — seventh water chamber A-7 — fourteenth water chamber B-7 — water return port E-3.

Claims

1. An inverted wire drawing machine drawing die cooling device, characterized in that: It includes a die locking sleeve (1), a frame (3), an O-ring (4), a drawing die (6), a cooling tank (7), a round nut (8), a stop washer (9), a positioning sleeve (10), and a support baffle (11); A cooling tank (7) is provided at the center inside the frame (3). Through holes are machined along the length direction at the lower part of the side surface of the cooling tank (7). An oil inlet hole (E-2) is machined at the center of the upper surface of the cooling tank (7), and the oil inlet hole (E-2) is communicated with the through holes. A drawing die (6) is provided at each opening on both sides of the cooling tank (7). An O-ring (4) is sleeved at one end of the outer surface of the drawing die (6). A die locking sleeve (1) is provided at the output end of the drawing die (6) at one opening of the cooling tank (7). A support baffle (11) is provided at one end inside the frame (3). Through holes are machined on the side surface of the support baffle (11). After one end of the positioning sleeve (10) passes through the through holes on the support baffle (11), it is fixedly connected to the input end of the drawing die (6) at the other opening of the cooling tank (7). And the fixing ring in the middle of the outer surface of the positioning sleeve (10) is fixedly connected to the support baffle (11) through a round nut (8) and a stop washer (9).

2. The cooling device for the drawing die of an inverted wire drawing machine according to claim 1, wherein: A gland (5) is provided on each of the two side surfaces of the cooling tank (7), and the gland (5) is fixedly connected to the side surface of the cooling tank (7) through bolts.

3. The cooling device for the drawing die of an inverted wire drawing machine according to claim 2, characterized in that: On one side surface of the cooling tank (7), a first water chamber (A-1), a second water chamber (A-2), a third water chamber (A-3), a fourth water chamber (A-4), a fifth water chamber (A-5), a sixth water chamber (A-6), and a seventh water chamber (A-7) are successively machined along the circumferential direction. The sixth water chamber (A-6) and the seventh water chamber (A-7) are communicated through a first water channel (C-1). The fourth water chamber (A-4) and the fifth water chamber (A-5) are communicated through a second water channel (C-2). The second water chamber (A-2) and the third water chamber (A-3) are communicated through a third water channel (C-3).

4. A drawing die cooling device for an inverted wire drawing machine according to claim 3, characterized in that: On the other side surface of the cooling tank (7), an eighth water chamber (B-1), a ninth water chamber (B-2), a tenth water chamber (B-3), an eleventh water chamber (B-4), a twelfth water chamber (B-5), a thirteenth water chamber (B-6), and a fourteenth water chamber (B-7) are successively machined along the circumferential direction. The eighth water chamber (B-1) and the ninth water chamber (B-2) are communicated through a fourth water channel (D-1). The tenth water chamber (B-3) and the eleventh water chamber (B-4) are communicated through a fifth water channel (D-2). The twelfth water chamber (B-5) and the thirteenth water chamber (B-6) are communicated through a sixth water channel (D-3).

5. The cooling device for the drawing die of an inverted wire drawing machine according to claim 4, wherein: An inlet (E-1) is provided at one end of the upper surface of the cooling tank (7), and the inlet (E-1) is communicated with the inside of the first water chamber (A-1). A return port (E-3) is provided at the other end of the upper surface of the cooling tank (7), and the return port (E-3) is communicated with the inside of the fourteenth water chamber (B-7).

6. The cooling device for the drawing die of an inverted wire drawing machine according to claim 5, wherein: The described No. 1 water chamber (A-1) is internally connected to the No. 8 water chamber (B-1) through a pipeline. The No. 9 water chamber (B-2) is internally connected to the No. 2 water chamber (A-2) through a pipeline. The No. 3 water chamber (A-3) is internally connected to the No. 10 water chamber (B-3) through a pipeline. The No. 11 water chamber (B-4) is internally connected to the No. 4 water chamber (A-4) through a pipeline. The No. 5 water chamber (A-5) is internally connected to the No. 12 water chamber (B-5) through a pipeline. The No. 13 water chamber (B-6) is internally connected to the No. 6 water chamber (A-6) through a pipeline. The No. 7 water chamber (A-7) is internally connected to the No. 14 water chamber (B-7) through a pipeline.

7. The cooling device for the drawing die of an inverted wire drawing machine according to claim 1, characterized in that: An oil discharge hole is machined at the center of the lower surface of the described cooling box (7), and the oil discharge hole is internally connected to the through hole on the side of the cooling box (7).

8. The cooling device for the drawing die of an inverted wire drawing machine according to claim 1, characterized in that: Two oil return holes are evenly arranged along the length direction on the side surface of the described frame (3).

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