A mold cooling device

Abstract

The utility model discloses a mould cooling device, including frame, be equipped with mould on the frame, be equipped with cooling water mouth with its inner cooling waterway through on the mould, every cooling water mouth is connected with cooling water pipe respectively, the cooling water pipe includes water pipe body and the waterproof sleeve pipe of setting up in water pipe body outside, the upper surface of waterproof sleeve pipe is equipped with air hole, the lower surface of waterproof sleeve pipe is equipped with drain hole, the just below of drain hole is equipped with water receiving device. The utility model discloses mould cooling device, from the formation amount of condensate water outside water pipe body and the drainage, collection of condensate water two aspects, greatly reduce the formation amount of condensate water, simultaneously, utilize the package of waterproof sleeve pipe, collect the condensate water finally in water receiving device, prevent the condensate water that produces and drop at will to the stamping equipment and work piece, avoid the influence of condensate water to stamping equipment and work piece.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a mold cooling device. Background Technology

[0002] Stamping is a process in which external force is applied to sheet metal using a press at room temperature or high temperature, causing it to undergo plastic deformation or separation to obtain a workpiece of the desired shape and size. During cold stamping, high-speed deformation and friction between the die and the sheet metal accumulate a large amount of heat in a very short time. If the heat cannot be dissipated in time, it will cause springback, warping, and even microstructural changes on the workpiece surface, reducing dimensional accuracy and mechanical properties; the die temperature rises more rapidly, the surface hardness decreases, and the risk of wear, cracking, and plastic deformation increases significantly, shortening the service life; the lubricating film breaks down, the coefficient of friction increases, the quality of the stamped section deteriorates, and the scrap rate increases.

[0003] Therefore, precision stamping dies generally have built-in cooling water channels, as disclosed in the Chinese patent application document No. 202323533570.0. These channels form a circulation loop by connecting to external cooling water pipes, achieving continuous water cooling and ensuring constant temperature operation of the die by relying on the circulating cooling water to remove heat. However, the die's cooling water pipes are directly exposed to the air, and the exposed metal pipe surfaces are prone to condensation, forming a large amount of condensate. Under the influence of gravity and stamping vibration, this condensate continuously drips onto the die cavity, locating pins, ejector mechanism, and the surface of the stamped parts, causing localized sudden cooling deformation of the sheet metal, water stains, oxidation spots, rust spots, and other appearance defects. As the workpiece is repeatedly pressed in during the stroke, it directly affects the quality of subsequent electroplating and coating. At the same time, water droplets seep into the gaps between guide pillars / sleeves and mix with metal dust to form abrasive slurry, which exacerbates the wear of the guide pairs and reduces the mold closing accuracy.

[0004] To suppress condensation, a common practice on site is to wrap the water pipes with heat insulation cotton. However, heat insulation cotton has a porous fiber structure, which easily absorbs oil mist and moisture in the workshop. After getting damp, its thermal conductivity increases sharply, and its heat insulation performance is almost lost. Moreover, fiber shedding can block the mold venting groove, causing gas to be unable to be discharged in time during stamping. Instead, it forms bubble marks on the surface of the workpiece, requiring frequent maintenance and replacement, and the effect is not good. Utility Model Content

[0005] The purpose of this invention is to provide a mold cooling device.

[0006] The technical solution to achieve the purpose of this utility model is: a mold cooling device, including a frame, on which a mold is provided, and on which a cooling water port communicating with the internal cooling water channel is provided. Each cooling water port is connected to a cooling water pipe. The cooling water pipe includes a water pipe body and a water-proof sleeve sleeved outside the water pipe body. The inner diameter of the water-proof sleeve is larger than the outer diameter of the water pipe body. An air hole is provided on the upper surface of the water-proof sleeve, and a drain hole is provided on the lower surface of the water-proof sleeve. The horizontal height of the drain hole is lower than the horizontal height of the water-proof sleeve, and a water receiving device is provided directly below the drain hole.

[0007] Furthermore, the waterproof sleeve is a transparent rubber tube. The transparent tube structure has two advantages: firstly, it provides further heat insulation, reducing condensation caused by temperature differences; secondly, the transparent structure allows for convenient and timely observation of the conditions inside the waterproof sleeve.

[0008] Furthermore, the waterproof sleeve is not horizontally arranged; it has a high section and a low section. The vent is located on the high section of the waterproof sleeve, and the drain hole is located on the low section. Because the vent is located at the high position, water inside the waterproof sleeve will not leak out, only allowing air to pass through. Because the drain hole is located at the low position, water inside the waterproof sleeve flows slowly, facilitating its discharge.

[0009] Furthermore, the water-proof sleeve has a side-standing U-shaped wiring configuration. The air vent is located in the upper section of the water-proof sleeve, and the drain hole is located in the lower section. The water-proof sleeve wiring requires a support point. To cool the mold, one end of the water-proof sleeve is connected to the mold, while the support point for the other end is usually not on the mold but on the frame. Simultaneously, considering that the water-proof sleeve also needs a certain displacement as the mold moves up and down, a certain length of movement must be reserved in the water-proof sleeve. To meet the above requirements, the water-proof sleeve is typically a side-standing U-shaped wiring configuration.

[0010] Furthermore, the cooling water inlet can be either a cooling water inlet or a cooling water outlet. The mold contains cooling water channels, with a cooling water inlet and a cooling water outlet at each end. The cooling water inlet can be either a cooling water inlet or a cooling water outlet. When the cooling water inlet is a cooling water inlet, it is connected to the cooling water pipe; when the cooling water inlet is a cooling water outlet, it is also connected to the cooling water pipe.

[0011] Furthermore, each mold has two cooling water inlets, one of which is a cooling water inlet and the other is a cooling water outlet. Each of the cooling water inlet and outlet of the mold is connected to a cooling water pipe.

[0012] Furthermore, the frame is equipped with a water distributor, which contains an inlet pipe and an outlet pipe. The cooling water inlet of each mold is connected to the inlet pipe of the water distributor, and the cooling water outlet of each mold is connected to the outlet pipe of the water distributor. A main inlet pipe is connected to the inlet pipe of the water distributor, and a main outlet pipe is connected to the outlet pipe of the water distributor. During operation, water from the main inlet pipe enters the inlet pipe of the water distributor, then flows through each cooling water pipe and through the cooling water inlet of each mold into each mold to cool them. Afterward, the water in each mold flows through the cooling water outlet and through the cooling water pipe into the outlet pipe of the water distributor; finally, it is output from the main outlet pipe. The battery steel shell needs to be formed by multiple stamping processes. On a set of stamping equipment, multiple sets of stamping dies are arranged. Each set of stamping dies has a cooling requirement. The water distributor can connect the main water inlet pipe to the cooling water inlet of each die and the main water outlet pipe to the cooling water outlet of each die, so as to facilitate the simultaneous supply of water cooling to multiple dies.

[0013] Furthermore, the mold is either an upper mold or a lower mold. A set of stamping dies typically includes an upper mold and a lower mold, and the mold connecting the cooling water pipe can be either the upper mold or the lower mold. The cooling water pipe connecting the upper mold and the lower mold can typically be the cooling water pipe described in this invention.

[0014] Furthermore, when the mold is an upper mold for stamping battery steel shells, the water receiving device consists of a clamping frame located in the stamping area that holds the battery steel shell horizontally, and a waste oil pan located below the stamping area to collect waste oil generated during the stamping process. The clamping frame has water channels, and each drain is located directly above the water channel. The bottom of the clamping frame has a drain outlet communicating with the water channel, located to the side of the mold and directly above the waste oil pan. As mentioned earlier, the battery steel shell needs to undergo multiple stamping processes. In a set of battery steel shell stamping equipment, the stamping area not only has multiple molds, but also a clamping frame that holds the battery steel shell horizontally, allowing it to be stamped multiple times under each mold. In addition, lubricating oil is required during the stamping process; therefore, the bottom of the battery steel shell stamping equipment also has a waste oil pan to collect waste oil generated during the stamping process. Based on this structure, to avoid setting up a separate water collection tank and simplify the structure, the water discharged from the drain hole in the cooling water pipe can be drained into the waste oil pan. In this situation, the upper mold is usually located in the stamping area, with many components below it. Water discharged from the drain holes in the cooling water pipes is often difficult to drip directly into the waste oil pan. Therefore, preferably, a water channel can be formed on the fixture frame, with each drain hole located directly above the channel. This allows the water discharged from the drain holes to first drip into the water channel of the fixture frame, and then the water in the channel drips directly into the waste oil pan, or it can first drip onto the machine frame and then along the frame into the waste oil pan.

[0015] Furthermore, when the mold is a lower mold for stamping battery steel casings, the water receiving device consists of a waste oil tray located below the stamping area to collect waste oil generated during the stamping process, with each drain hole located directly above the waste oil tray. The waste oil tray is located below the lower mold, allowing the drain holes to drip directly into the waste oil tray.

[0016] This utility model relates to a mold cooling device, in which a water-proof sleeve is fitted around the outside of the water pipe body at intervals. The water-proof sleeve has air holes and drainage holes. On one hand, this creates an air gap between the outside of the water pipe body, the water pipe itself, and the water-proof sleeve. This air gap separates the water pipe body from the air outside the water-proof sleeve, creating conditions for condensation on the outer wall of the water pipe body. The temperature difference between the water pipe body and the air outside the water-proof sleeve is converted into a temperature difference between the water pipe body and the air gap. The amount of air inside the air gap is relatively less than that outside the water-proof sleeve. Due to the conduction of the temperature of the water pipe body, the temperature difference between the air gap and the water pipe body is relatively small, which greatly reduces the amount of condensate generated outside the water pipe body. On the other hand, the water-proof sleeve is installed outside the water pipe body, and the condensate generated outside the water pipe body can be collected inside the water-proof sleeve and then discharged through the drain hole of the water-proof sleeve into the water receiving device, thus preventing the condensate outside the water pipe body from dripping everywhere.

[0017] This utility model of a mold cooling device significantly reduces the amount of condensate formed outside the water pipe by addressing both the amount of condensate formed and the drainage and collection of the condensate. Simultaneously, the water-resistant sleeve ensures that the condensate is ultimately collected in the water receiving device, preventing it from dripping onto the stamping equipment and workpieces and thus avoiding any negative impact. Furthermore, the water-resistant sleeve exhibits good stability, does not lose its function upon contact with water, has a long service life, and requires infrequent replacement, greatly reducing maintenance costs. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the mold cooling device of this utility model; Figure 2 This is a schematic diagram of the main structure of the mold cooling device of this utility model, excluding the water receiving device; Figure 3 This is a schematic diagram of the cooling water pipe structure of the mold cooling device of this utility model; Figure 4 yes Figure 3 A magnified structural diagram of part A in the middle; Figure 5 yes Figure 3 A magnified structural diagram of part B in the middle; Figure 6 This is a schematic diagram of the structure of the mold cooling device of this utility model, in which the water distributor and the mold are connected by a cooling water pipe; Figure 7 This is a schematic diagram of the structure of the mold cooling device of this utility model when the mold is the upper mold for stamping battery steel shell; Figure 8This is a schematic diagram of the cooling water pipe and fixture frame in the mold cooling device of this utility model when the mold is the upper mold for stamping battery steel shell; Figure 9 is a schematic diagram of the cooling water pipe and water receiving device in the mold cooling device of this utility model when the mold is the upper mold for stamping battery steel shell; Figure 10 This is a schematic diagram of the structure of the mold cooling device of this utility model when the mold is the lower mold for stamping battery steel shell. Detailed Implementation

[0019] The preferred embodiment of the mold cooling device of this utility model will be described in detail below with reference to the accompanying drawings: like Figures 1 to 5 As shown, a mold cooling device includes a frame 10, on which a mold 100 is mounted. The mold 100 has cooling water inlets 1 that communicate with its internal cooling water channels. Each cooling water inlet 1 is connected to a cooling water pipe 2. The cooling water pipe 2 includes a pipe body 21 and a water-proof sleeve 22 sleeved outside the pipe body 21. The inner diameter D2 of the water-proof sleeve 22 is larger than the outer diameter D1 of the pipe body 21. The upper surface of the water-proof sleeve 22 has an air hole 221, and the lower surface of the water-proof sleeve 22 has a drain hole 222. The horizontal height of the drain hole 222 is lower than the horizontal height of the water-proof sleeve 22. A water receiving device 3 is located directly below the drain hole 222.

[0020] This utility model relates to a mold cooling device. The mold 100 is used for stamping and forming. The mold 100 has a cooling water channel and a cooling water inlet 1 that communicates with the cooling water channel. The cooling water inlet 1 is used to supply water to or from the cooling water channel within the mold 100. Each cooling water inlet 1 is connected to a cooling water pipe 2, which provides a pipeline for the water supply or outlet of the cooling water channel within the mold 100. The cooling water pipe 2 includes a pipe body 21 and a water-proof sleeve 22. The pipe body 21 serves as a water flow pipeline, and the water-proof sleeve 22 is spaced around the pipe body 21 to enclose it. This creates an air gap between the pipe body 21 and the water-proof sleeve 22, while also collecting condensate generated outside the pipe body 21. The vent 221 is formed on the upper surface of the waterproof sleeve 22. The vent 221 is used to equalize the internal and external air pressure of the waterproof sleeve 22, preventing pressure differences from affecting the flow of condensate collected inside the waterproof sleeve 22. The drain hole 222 is formed on the lower surface of the waterproof sleeve 22. The drain hole 222 is positioned below the waterproof sleeve 22, allowing the condensate collected inside the waterproof sleeve 22 to flow out through the drain hole 222 instead of overflowing from the vent 221. The water receiving device 3 is used to collect the condensate discharged from the drain hole 222.

[0021] This utility model relates to a mold cooling device. During operation, the mold 100 undergoes a stamping process. During stamping, cooling water from the water pipe body 21 of the cooling water pipe 2 enters or exits the mold 100 through the cooling water inlet 1, cooling the mold 100. Due to temperature differences, condensate generated outside the water pipe body 21 collects inside the water-resistant sleeve 22. The water-resistant sleeve 22 has vent holes 221 on its upper surface. The water-resistant sleeve 22 maintains uniform pressure inside and outside, allowing the condensate inside to drain smoothly through the drain hole 222 and enter and be collected in the water receiving device 3.

[0022] This utility model relates to a mold cooling device in which a water-proof sleeve 22 is fitted around the water pipe body 21 at intervals. The water-proof sleeve 22 has air holes 221 and drainage holes 222. This creates an air gap between the water pipe body 21 and the water-proof sleeve 22, separating the water pipe body 21 from the air outside the water-proof sleeve 22. This air gap creates conditions for condensation on the outer wall of the water pipe body 21, converting the temperature difference between the air outside the water pipe body 21 and the water-proof sleeve 22 into a temperature difference between the water pipe body 21 and the air gap. The amount of air inside the air gap is relatively less than that outside the water-proof sleeve 22. Due to the conduction of temperature from the water pipe body 21, the temperature difference between the air gap and the water pipe body 21 is relatively small, greatly reducing the amount of condensate generated outside the water pipe body 21. On the other hand, the water-proof sleeve 22 is located outside the water pipe body 21, and the condensate generated outside the water pipe body 21 can be collected inside the water-proof sleeve 22 and then discharged uniformly through the drain hole 222 of the water-proof sleeve 22, flowing into and being collected in the water receiving device 3, thus preventing the condensate outside the water pipe body 21 from dripping everywhere.

[0023] This utility model of a mold cooling device significantly reduces the amount of condensate formed outside the water pipe body 21 by addressing both the amount of condensate formed and the drainage and collection of the condensate. Simultaneously, the water-resistant sleeve 22 effectively collects the condensate into the water receiving device 3, preventing it from dripping onto the stamping equipment and workpieces and thus avoiding any negative impact. Furthermore, the water-resistant sleeve 22 exhibits good stability, does not lose its function upon contact with water, has a long service life, and requires infrequent replacement, greatly reducing maintenance costs.

[0024] In this utility model mold cooling device, preferably, the water-proof sleeve 22 is a transparent rubber tube. The transparent rubber tube structure has two advantages: firstly, it provides further heat insulation, reducing condensation caused by temperature differences; secondly, the transparent structure allows for convenient and timely observation of the conditions inside the water-proof sleeve 22.

[0025] In a preferred embodiment of this mold cooling device, the water-proof sleeve 22 is not horizontally positioned. The water-proof sleeve 22 has a high section and a low section. The vent 221 is located on the high section of the water-proof sleeve 22, and the drain hole 222 is located on the low section of the water-proof sleeve 22. Because the vent 221 is located at the high position, water inside the water-proof sleeve 22 will not leak out, allowing only air to pass through. Because the drain hole 222 is located at the low position, water inside the water-proof sleeve 22 flows slowly, facilitating drainage through the drain hole 222.

[0026] In a preferred embodiment of this mold cooling device, the water-resistant sleeve 22 is arranged in a side-standing U-shape, with the air vent 221 located in the upper section of the water-resistant sleeve 22 and the drain hole 222 located in the lower section. The water-resistant sleeve 22 requires a support point for its wiring. To cool the mold 100, one end of the water-resistant sleeve 22 is connected to the mold 100, while the support point for the other end is typically not on the mold 100, but on the frame 10. Simultaneously, considering that the water-resistant sleeve 22 also needs a certain displacement as the mold 100 moves up and down, a certain length of movement must be reserved for the water-resistant sleeve 22. To meet the above requirements, the water-resistant sleeve 22 is typically arranged in a side-standing U-shape.

[0027] In this utility model's mold cooling device, preferably, the cooling water inlet 1 is either a cooling water inlet or a cooling water outlet. The mold 100 has a cooling water channel, with a cooling water inlet and a cooling water outlet at each end. The cooling water inlet 1 can be either a cooling water inlet or a cooling water outlet. When the cooling water inlet 1 is a cooling water inlet, it is connected to the cooling water pipe 2; when the cooling water inlet 1 is a cooling water outlet, it is also connected to the cooling water pipe 2.

[0028] In this utility model mold cooling device, preferably, each mold 100 has two cooling water inlets 1, one of which is a cooling water inlet 1' and the other is a cooling water outlet 1'". The cooling water inlet 1' and the cooling water outlet 1' of the mold 100 are each connected to a cooling water pipe 2.

[0029] The mold cooling device of this utility model is preferably, as follows: Figure 6As shown, a water distributor 4 is provided on the frame 10. The water distributor 4 has an inlet pipe 41 and an outlet pipe 42. The cooling water inlet 1' of each mold 100 is connected to the inlet pipe 41 of the water distributor 4, and the cooling water outlet 1" of each mold 100 is connected to the outlet pipe 42 of the water distributor 4. The main inlet pipe is connected to the inlet pipe 41 of the water distributor 4, and the main outlet pipe is connected to the outlet pipe 42 of the water distributor 4. During operation, the water in the main inlet pipe enters the inlet pipe 41 of the water distributor 4, and then enters each mold 100 through the cooling water pipes 2 and the cooling water inlet 1' of each mold 100 to cool each mold 100. After that, the water in each mold 100 enters the outlet pipe 42 of the water distributor 4 through the cooling water outlet 1" and the cooling water pipes 2. Finally, it is output from the main outlet pipe. The battery steel shell needs to be formed by multiple stamping processes. On a set of stamping equipment, multiple sets of stamping dies are arranged. Each set of stamping dies has a cooling requirement. The water distributor 4 can connect the main water inlet pipe to the cooling water inlet 1' of each die 100 and the main water outlet pipe to the cooling water outlet 1" of each die 100, so as to facilitate the simultaneous supply of water cooling to multiple dies 100.

[0030] In this utility model's mold cooling device, preferably, the mold 100 is an upper mold or a lower mold. A set of stamping dies typically includes an upper mold and a lower mold, and the mold 100 connected to the cooling water pipe 2 can be either an upper mold or a lower mold. The cooling water pipes connecting the upper mold and the lower mold can typically be the cooling water pipe 2 described in this utility model simultaneously.

[0031] The mold cooling device of this utility model is preferably, as follows: Figures 7-9As shown, when the mold 100 is the upper mold 100' for stamping battery steel shells, the water receiving device 3 consists of a clamping frame 31 located in the stamping area that clamps the battery steel shell and moves it horizontally, and a waste oil pan 32 located below the stamping area to collect waste oil during the stamping process. The clamping frame 31 has a water ditch 311, and each of the drainage holes 222 is located directly above the water ditch 311. The bottom of the clamping frame 31 has a drainage outlet 312 that communicates with the water ditch 311. The drainage outlet 312 is located on the side of the mold 100 and directly above the waste oil pan 32. As mentioned earlier, the battery steel casing needs to undergo multiple stamping processes. A set of battery steel casing stamping equipment includes not only multiple sets of molds in the stamping area, but also a clamping frame 31 that holds the battery steel casing horizontally, allowing it to be stamped multiple times sequentially under each mold. Furthermore, lubricating oil is required during the stamping process; therefore, the bottom of the battery steel casing stamping equipment is equipped with a waste oil pan 32 to collect the waste oil generated during stamping. Based on this structure, to avoid the need for a separate water collection tank and simplify the structure, the water discharged from the drain hole 222 in the cooling water pipe 2 can be drained into the waste oil pan 32. In this case, the upper mold 100' is usually located in the stamping area, with many components below it, and the water discharged from the drain hole 222 in the cooling water pipe 2 is usually difficult to drip directly into the waste oil pan 32. For this purpose, preferably, a water ditch 311 can be opened on the fixture frame 31, so that each of the drain holes 222 is located directly above the water ditch 311, so that the water discharged from the drain holes 222 first drips into the water ditch 311 of the fixture frame 31, and then the water in the water ditch 311 of the fixture frame drips directly into the waste oil pan 32, or first drips onto the frame, and then drips along the frame into the waste oil pan 10.

[0032] In this utility model mold cooling device, the number of drain outlets 312 is one or more.

[0033] The mold cooling device of this utility model is preferably, as follows: Figure 10 As shown, when the mold 100 is a lower mold 100” for stamping battery steel shells, the water receiving device 3 consists of a waste oil tray 32 located below the stamping area to collect waste oil generated during the stamping process. Each drain hole 222 is located directly above the waste oil tray 32. The waste oil tray 32 is located below the lower mold 100”, allowing the drain holes 222 to drip directly into the waste oil tray 32.

[0034] For those skilled in the art to which this utility model pertains, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the protection scope of this utility model.

Claims

1. A mold cooling device, comprising a frame, a mold mounted on the frame, and cooling water inlets communicating with internal cooling water channels on the mold, each cooling water inlet being connected to a cooling water pipe, characterized in that: The cooling water pipe includes a water pipe body and a water-proof sleeve fitted outside the water pipe body. The inner diameter of the water-proof sleeve is larger than the outer diameter of the water pipe body. The upper surface of the water-proof sleeve is provided with air holes, and the lower surface of the water-proof sleeve is provided with drain holes. The horizontal height of the drain holes is lower than the horizontal height of the water-proof sleeve, and a water receiving device is provided directly below the drain holes.

2. The mold cooling device according to claim 1, characterized in that: The waterproof sleeve is a transparent rubber tube.

3. The mold cooling device according to claim 1, characterized in that: The waterproof sleeve is not horizontally arranged. The waterproof sleeve has a high section and a low section. The air hole is located on the high section of the waterproof sleeve, and the drain hole is located on the low section of the waterproof sleeve.

4. The mold cooling device according to claim 1, characterized in that: The waterproof sleeve is arranged in a U-shape with the pipes upright on the side. The air hole is located in the upper section of the waterproof sleeve, and the drain hole is located in the lower section of the waterproof sleeve.

5. The mold cooling device according to claim 1, characterized in that: The cooling water inlet is either a cooling water inlet or a cooling water outlet.

6. The mold cooling device according to claim 1, characterized in that: Each mold has two cooling water inlets, one of which is a cooling water inlet and the other is a cooling water outlet.

7. The mold cooling device according to claim 6, characterized in that: The frame is equipped with a water distributor, which contains an inlet pipe and an outlet pipe. The cooling water inlet of each mold is connected to the inlet pipe of the water distributor, and the cooling water outlet of each mold is connected to the outlet pipe of the water distributor.

8. The mold cooling device according to claim 1, characterized in that: The mold is either an upper mold or a lower mold.

9. The mold cooling device according to claim 8, characterized in that: When the mold is an upper mold for stamping battery steel shells, the water receiving device consists of a clamping frame located in the stamping area that holds the battery steel shells horizontally and a waste oil pan located below the stamping area to collect waste oil during the stamping process. The clamping frame has water grooves, and each drain is located directly above the water groove. The bottom of the clamping frame has a drain outlet that communicates with the water groove. The drain outlet is located on the side of the mold and directly above the waste oil pan.

10. The mold cooling device according to claim 8, characterized in that: When the mold is a lower mold for stamping battery steel shells, the water receiving device consists of a waste oil pan located below the stamping area to collect waste oil during the stamping process, and each of the drainage holes is located directly above the waste oil pan.

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