Hydraulic press punch cooling device

Abstract

The application discloses a hydraulic machine punch cooling device and belongs to the technical field of hydraulic machine punch cooling.The cooling device comprises a pair of half-ring cooling sleeve assemblies, a supporting assembly and a driving assembly.The half-ring cooling sleeve assembly comprises an outer supporting half-ring, an inner heat-conducting half-ring, a communication assembly A and a communication assembly B.The outer supporting half-ring and the inner heat-conducting half-ring are coaxially matched and installed to form a half-ring cavity.The two ends of the half-ring cavity are respectively provided with the communication assembly A and the communication assembly B.The two half-ring cooling sleeve assemblies are driven by the driving assembly to form a circular-ring-shaped cooling cavity, and the circular-ring-shaped cooling cavity is arranged on the outside of the hydraulic machine punch.The cooling liquid in the high-pressure cooling liquid tank flows into the circular-ring-shaped cooling cavity, and the cooled cooling liquid is recycled to a recycling tank, so that the hydraulic machine punch is conveniently cooled, the cooling liquid is conveniently recycled and recycled, and the efficiency is high and convenient.

Description

Technical Field

[0001] This invention relates to the field of hydraulic press punch cooling technology, and more specifically to a hydraulic press punch cooling device. Background Technology

[0002] During the stamping process of a hydraulic press, the hydraulic press punch often undergoes high-frequency, multiple stamping operations, generating high heat. If the hydraulic press punch is not cooled during breaks, its service life will be affected. Existing technologies for cooling hydraulic press punches typically involve installing a ring-shaped water pipe around the punch and nozzles inside the pipe to spray coolant. After spraying the coolant, a collection container needs to be placed below the punch to collect the coolant. While this method effectively cools the punch, collecting the coolant after use is inconvenient, causing problems for cooling the hydraulic press during stamping. To address these issues, this invention provides a hydraulic press punch cooling device. Summary of the Invention

[0003] To address the aforementioned technical deficiencies, the present invention aims to provide a hydraulic press punch cooling device. Two semi-circular cooling sleeve assemblies, driven by a drive assembly, form an annular cooling cavity, which is fitted around the outside of the hydraulic press punch. The annular cooling cavity is connected to a high-pressure coolant tank and a recovery tank, respectively, thereby achieving cooling of the hydraulic press punch and the recovery and recycling of the coolant. This solves the technical problems mentioned in the background art, such as inconvenient coolant collection and the difficulties it causes for cooling the hydraulic press punch.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a hydraulic press punch cooling device, comprising: a hydraulic press body vertically installed on the lower surface of the horizontal arm of the L-shaped hanger; the hydraulic press punch at the output end of the hydraulic press body is cooled by a cooling device, the cooling device comprising a pair of semi-circular ring cooling sleeve assemblies, a support assembly, and a drive assembly; the semi-circular ring cooling sleeve assembly comprises an outer support semi-circular ring, an inner heat-conducting semi-circular ring, a connecting assembly A, and a connecting assembly B; the outer support semi-circular ring and the inner heat-conducting semi-circular ring are coaxially matched and installed to form a semi-circular ring cavity; the semi-circular ring... Connecting component A and connecting component B are respectively installed at both ends of the annular cavity; the driving component drives the two semi-circular cooling sleeve assemblies to move relative to each other, so that the two semi-circular cooling sleeve assemblies connect to form an annular cooling cavity, and the annular cooling cavity is coaxially sleeved on the outside of the hydraulic press punch; connecting component A at one end of one semi-circular cavity is connected to connecting component B at one end of the other semi-circular cavity; the outer side of one outer supporting semi-circular ring is connected to the injection pipe, and the outer side of the other outer supporting semi-circular ring is connected to the outlet pipe; the injection pipe is connected to the high-pressure coolant tank; the outlet pipe is connected to the recovery tank.

[0005] Preferably, the support assembly includes two U-shaped support rods; the two U-shaped support rods are symmetrically installed on both sides of the vertical arm of the L-shaped hanger; a cross groove is opened at the end of one of the U-shaped support rods; the semi-circular cooling sleeve assembly is slidably installed in the horizontal groove of the cross groove.

[0006] Preferably, the drive assembly includes an electric telescopic rod and a cross slider; the cross slider is slidably installed in the cross groove; the electric telescopic rod is fixedly installed on the inner side of the cross groove; the two ends of the cross slider are respectively connected to the output end of the electric telescopic rod and the semi-circular cooling sleeve assembly.

[0007] Preferably, both the outer supporting semicircular ring and the inner heat-conducting semicircular ring have U-shaped cross-sections; L-shaped arc-shaped limiting strips are symmetrically installed at the upper and lower ends of the inner arc-shaped opening of the outer supporting semicircular ring; C-shaped arc-shaped wrapping strips are symmetrically installed at the upper and lower ends of the outer arc-shaped opening of the inner heat-conducting semicircular ring; the inner heat-conducting semicircular ring is matched and installed inside the outer supporting semicircular ring; the arc-shaped wrapping strip extends into the interior of the outer supporting semicircular ring and matches the corresponding arc-shaped limiting strip.

[0008] Preferably, the inner heat-conducting semi-circular ring is integrally fixed with caps at both ends to seal both ends of the inner heat-conducting semi-circular ring; the inner heat-conducting semi-circular ring is made of metal thermally conductive material or silicone thermally conductive material.

[0009] Preferably, the connecting component A includes an arc-shaped cover A, an inner extension tube, a sealing plate A, and an L-shaped ejector pin; the end of the arc-shaped cover A extends inward and is integrally connected to the inner extension tube; the end of the inner extension tube is connected to the sealing plate A via a spring A; the L-shaped ejector pin is symmetrically installed on the upper and lower sides inside the inner extension tube; the arc-shaped cover A is matched and installed at one end of the semi-circular cavity.

[0010] Preferably, the connecting component B includes an arc-shaped cover B, an extension tube, a sealing plate B, and a straight ejector pin; the end of the arc-shaped cover B is integrally connected to the extension tube outward; the sealing plate B is sealed and installed at one end of the extension tube by a spring B and the sealing plate B is located inside the arc-shaped cover B; the straight ejector pins are symmetrically installed on the left and right sides of the outer end of the extension tube; the arc-shaped cover B is matched and installed at one end of the semi-circular cavity.

[0011] Preferably, the outer end of the extended tube has symmetrically opened limiting sliding openings on the upper and lower side walls; when the driving component simultaneously drives the two semi-circular cooling sleeve assemblies to move relative to each other to form a circular cooling cavity, the extended tube is slidably matched and installed in the inner extension tube; after the L-shaped ejector pin slides into the limiting sliding opening, it pushes open the sealing plate B; the straight ejector pin pushes open the sealing plate A.

[0012] Preferably, both the arc-shaped cover A and the arc-shaped cover B are provided with arc-shaped sliding strips on their outer sides; arc-shaped limiting grooves are opened on the inner sides of both ends of the outer support semi-circular ring; the arc-shaped sliding strips are correspondingly slidably matched in the arc-shaped limiting grooves.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. The two-half-ring cooling sleeve assembly of the present invention forms a ring-shaped cooling cavity under the drive of the drive assembly, and the ring-shaped cooling cavity is sleeved on the outside of the hydraulic press punch; the coolant in the high-pressure coolant tank flows into the ring-shaped cooling cavity, and the cooled coolant is recycled to the recycling tank; it is convenient for cooling the hydraulic press punch and for recycling and reusing the coolant, which is efficient and convenient.

[0015] 2. When the two semi-circular cooling sleeve assemblies move relative to each other to form a circular cooling cavity, the outer extension tube is slidably matched and installed inside the inner extension tube; at the same time, the L-shaped ejector pin opens the sealing plate B and the straight ejector pin opens the sealing plate A, realizing the connection between the two semi-circular cooling sleeve assemblies, ensuring that the coolant flows smoothly in the circular cooling cavity to achieve efficient heat dissipation and cooling of the hydraulic press punch. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a hydraulic press punch cooling device provided by the present invention.

[0018] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0019] Figure 3 This is a schematic diagram of the structure of one half-circular cooling sleeve assembly of the present invention.

[0020] Figure 4 This is a horizontal cross-sectional view of another semi-circular cooling sleeve assembly in this invention.

[0021] Figure 5 for Figure 4 A magnified view of B in the middle.

[0022] Figure 6 for Figure 4 A magnified view of C.

[0023] Figure 7 This is a cross-sectional view of the interconnecting component A and the interconnecting component B installed together in this invention.

[0024] Figure 8 This is a schematic diagram of the structure of the connecting component A in this invention.

[0025] Figure 9 This is a schematic diagram of the structure of the connecting component B in this invention.

[0026] Figure 10 This is a schematic diagram of the outer supporting semicircular ring in this invention.

[0027] Figure 11 This is a schematic diagram of the structure of the inner heat-conducting semi-circular ring in this invention.

[0028] Figure 12 for Figure 11 Vertical sectional view.

[0029] Explanation of reference numerals in the attached drawings: 11-L-type hanger, 12-hydraulic press body, 13-hydraulic press punch, 21-outer support semi-circular ring, 211-arc-shaped limiting strip, 212-arc-shaped limiting groove, 22-inner heat-conducting semi-circular ring, 221-arc-shaped wrapping strip, 222-cap, 23-connecting component A, 231-arc-shaped cap A, 232-inner extension tube, 233-sealing plate A, 234-L-type ejector pin, 235-spring A, 24-connecting component B, 241-arc-shaped cap B, 242-outer extension tube, 2421-limiting slide, 243-sealing plate B, 244-straight ejector pin, 245-spring B, 25-injection pipe, 26-outlet pipe, 27-arc-shaped slide bar, 3-U-shaped support rod, 31-cross slide groove, 41-electric telescopic rod, 42-cross slider. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1:

[0032] like Figures 1 to 12As shown, the present invention provides a hydraulic press punch cooling device, comprising: a hydraulic press body 12 vertically mounted on the lower surface of the horizontal arm of the L-shaped hanger 11; a hydraulic press punch 13 at the output end of the hydraulic press body 12 is cooled by a cooling device, the cooling device comprising a pair of semi-circular cooling sleeve assemblies, a support assembly, and a drive assembly; the semi-circular cooling sleeve assembly comprises an outer support semi-circular ring 21, an inner heat-conducting semi-circular ring 22, a connecting assembly A23, and a connecting assembly B24; the outer support semi-circular ring 21 and the inner heat-conducting semi-circular ring 22 are coaxially matched to form a semi-circular cavity; the connecting assembly A23 and the connecting assembly B24 are respectively installed at both ends of the semi-circular cavity; the drive assembly drives the two semi-circular cooling sleeve assemblies to move relative to each other, so that the two semi-circular cooling sleeve assemblies are connected to form an annular cooling cavity and the annular cooling cavity is coaxially sleeved on the outside of the hydraulic press punch 13; the connecting assembly A23 at one end of one semi-circular cavity is connected to the other... The connecting components B24 at one end of the semi-circular cavity are interconnected; the outer side of one of the outer supporting semi-circular rings 21 is connected to the injection pipe 25, and the outer side of the other outer supporting semi-circular ring 21 is connected to the outlet pipe 26; the injection pipe 25 is connected to the high-pressure coolant tank; the outlet pipe 26 is connected to the recovery tank; in fact, when the two semi-circular cooling jacket assemblies are centrally symmetrically distributed and installed on the outside of the hydraulic press punch 13, a circular cooling cavity is formed, at which time the inner heat-conducting semi-circular ring 22 is attached to the hydraulic press punch 13. The outer surface of the high-pressure coolant tank is connected to the injection pipe 25, which is equipped with an injection valve. When the injection valve is opened, the coolant in the high-pressure coolant tank flows into the annular cooling chamber. The coolant cools the hydraulic press punch 13 through the inner heat-conducting semi-circular ring 22, which is efficient and convenient. At the same time, the inlet of the recovery tank is connected to the outlet pipe 26, which is equipped with an outlet valve. When the outlet valve is opened, the coolant cooled by the hydraulic press punch 13 is recovered into the recovery tank, which is convenient and convenient. In fact, the coolant in the recovery tank is cooled by the cooling equipment and then input into the high-pressure coolant tank to form a circulation. This facilitates the cooling of the hydraulic press punch 13 and the recovery and recycling of the coolant, which is efficient and convenient.

[0033] Please see Figures 1 to 3As shown, the support assembly includes two U-shaped support rods 3; the two U-shaped support rods 3 are symmetrically installed on both sides of the vertical arm of the L-shaped hanger 11; a cross groove 31 is opened at one end of one of the U-shaped support rods 3, and the cross groove 31 extends through both sides of the support rod, so that the semi-circular cooling sleeve assembly can slide horizontally and stably within the cross groove 31; the semi-circular cooling sleeve assembly is slidably installed in the transverse groove of the cross groove 31. More specifically, the drive assembly includes an electric telescopic rod 41 and a cross slider 42; the cross slider 42 is slidably installed within the cross groove 31; the electric telescopic rod 41 is fixedly installed on the inner side of the cross groove 31; the two ends of the cross slider 42 are respectively connected to the output end of the electric telescopic rod 41 and the semi-circular cooling sleeve assembly; the semi-circular cooling sleeve assembly slides within the transverse groove of the cross groove 31 driven by the electric telescopic rod 41; in fact, the support assembly may not be installed on the L-shaped hanger 11, that is, it does not share a common installation platform with the hydraulic press body 12, and can be installed on other separate equipment. The hydraulic press punch 13 can also move spatially. When cooling is required, the hydraulic press punch 13 moves to the designated cooling position, corresponding to the location of the cooling device in this application. Furthermore, the drive assembly is not limited to the electric telescopic rod 41 in this application; it can also be other existing horizontal drive devices.

[0034] Example 2:

[0035] Please see Figures 3 to 11 As shown, both the outer supporting semicircular ring 21 and the inner heat-conducting semicircular ring 22 have U-shaped cross-sections. The outer supporting semicircular ring 21 has L-shaped arc-shaped limiting strips 211 symmetrically installed at both ends of its inner arc-shaped opening. These two arc-shaped limiting strips 211 and the outer supporting semicircular ring 21 form an integral structure, using a ceramic material that facilitates heat dissipation for more effective heat dissipation. The inner heat-conducting semicircular ring 22 has C-shaped arc-shaped wrapping strips 221 symmetrically installed at both ends of its outer arc-shaped opening. The inner heat-conducting semicircular ring 22 is fitted inside the outer supporting semicircular ring 21. The arc-shaped wrapping strip 221 extends into the outer supporting semicircular ring 21 and matches the corresponding arc-shaped limiting strip 211. In practice, the arc-shaped wrapping strip 221 can be made of rubber to ensure a good seal at the interface between the outer supporting semicircular ring 21 and the inner heat-conducting semicircular ring 22. In addition, the inner heat-conducting semi-circular ring 22 is integrally fixedly installed with the caps 222 at both ends to seal the two ends of the inner heat-conducting semi-circular ring 22. The arc-shaped limiting strip 211 is located inside the caps 222 to ensure good sealing at both ends of the inner heat-conducting semi-circular ring 22. The inner heat-conducting semi-circular ring 22 is made of metal heat-conducting material or silicone heat-conducting material. When in use, the inner heat-conducting semi-circular ring 22 is attached to the outer side of the hydraulic press punch 13 for efficient heat dissipation and cooling.

[0036] Please see Figure 7 as well as Figures 9 to 12As shown, the connecting component A23 includes an arc-shaped cover A231, an inner extension tube 232, a sealing plate A233, and an L-shaped ejector pin 234. The arc-shaped cover A231 extends inward at its end and is integrally connected to the inner extension tube 232; the end of the inner extension tube 232 is connected to the sealing plate A233 via a spring A235. Specifically, spring grooves are provided at the four corners of the end of the inner extension tube 232, and one end of the spring A235 is fixedly installed in the corresponding spring groove; in its natural state, under the elastic force of the spring A235, the inner extension tube 232 can achieve a good seal. The L-shaped ejector pin 234 is symmetrically installed on the upper and lower sides inside the inner extension tube 232 to open the sealing plate B243. The arc-shaped cover A231 is fitted and installed at one end of the semi-circular cavity; in addition, arc-shaped slide strips 27 are provided on the outer sides of both the arc-shaped cover A231 and the arc-shaped cover B241; arc-shaped limiting grooves 212 are opened on the inner sides of both ends of the outer supporting semi-circular ring 21; the arc-shaped slide strips 27 are correspondingly slidably fitted in the arc-shaped limiting grooves 212. Specifically, the arc-shaped cover A231 is fitted and installed inside the outer supporting semi-circular ring 21, and the arc-shaped cover A231, the outer supporting semi-circular ring 21, and the inner heat-conducting semi-circular ring 22 can achieve a good seal to prevent coolant leakage.

[0037] Please see Figure 7 as well as Figures 8 to 12 As shown, the connecting component B24 includes an arc-shaped cover B241, an extension tube 242, a sealing plate B243, and a straight pin 244. The arc-shaped cover B241 is integrally connected to the extension tube 242 at its end. The sealing plate B243 is sealed to one end of the extension tube 242 by a spring B245, and the sealing plate B243 is located inside the arc-shaped cover B241. Specifically, spring grooves are provided at the four corners of one end of the extension tube 242, and one end of the spring B245 is fixedly installed in the corresponding spring groove. In its natural state, under the action of the spring B245, the sealing plate B243 can achieve a good seal to the extension tube 242. The straight pins 244 are symmetrically installed on the left and right sides of the outer end of the extension tube 242; they are used to open the sealing plate A233. The arc-shaped cover B241 is matched and installed at one end of the semi-circular cavity; specifically, the arc-shaped cover B241 is matched and installed inside the outer support semi-circular ring 21, and the arc-shaped cover A231, the outer support semi-circular ring 21 and the inner heat-conducting semi-circular ring 22 can achieve a good seal to avoid the leakage of coolant.

[0038] Please see Figure 7As shown, the outer end of the extended tube 242 has symmetrically arranged limiting sliding openings 2421 on its upper and lower side walls. When the driving assembly simultaneously drives the two semi-circular cooling sleeve assemblies to move relative to each other to form an annular cooling cavity, the extended tube 242 is slidably matched and installed inside the inner extension tube 232. After the L-shaped ejector pin 234 slides into the limiting sliding opening 2421, it pushes open the sealing plate B243. The straight ejector pin 244 pushes open the sealing plate A233. In actual use, when the two semi-circular cooling sleeve assemblies move relative to each other to form an annular cooling cavity, the extended tube 242 is slidably matched and installed inside the inner extension tube 232. At the same time, the L-shaped ejector pin 234 pushes open the sealing plate B243 and the straight ejector pin 244 pushes open the sealing plate A233, realizing the connection between the two semi-circular cooling sleeve assemblies, ensuring that the coolant flows smoothly in the annular cooling cavity to achieve efficient heat dissipation and cooling of the hydraulic press punch 13.

[0039] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A hydraulic press punch cooling device, comprising: The hydraulic press body (12) is vertically mounted on the lower surface of the horizontal arm of the L-shaped hanger (11); the hydraulic press punch (13) at the output end of the hydraulic press body (12) is cooled by a cooling device, characterized in that the cooling device includes a pair of semi-circular ring cooling sleeve assemblies, a support assembly and a drive assembly; the semi-circular ring cooling sleeve assembly includes an outer support semi-circular ring (21), an inner heat-conducting semi-circular ring (22), a connecting assembly A (23) and a connecting assembly B (24); the outer support semi-circular ring (21) and the inner heat-conducting semi-circular ring (22) are coaxially matched and installed to form a semi-circular ring cavity; the connecting assembly A (23) and the connecting assembly B (24) are respectively installed at both ends of the semi-circular ring cavity. The drive assembly drives the two semi-circular cooling sleeve assemblies to move relative to each other, so that the two semi-circular cooling sleeve assemblies are connected to form a circular cooling cavity and the circular cooling cavity is coaxially sleeved on the outside of the hydraulic press punch (13); the connecting assembly A (23) at one end of one semi-circular cavity is connected to the connecting assembly B (24) at one end of the other semi-circular cavity; the outer side of one outer support semi-circular ring (21) is connected to the injection pipe (25), and the outer side of the other outer support semi-circular ring (21) is connected to the outlet pipe (26); the injection pipe (25) is connected to the high-pressure coolant tank; the outlet pipe (26) is connected to the recovery tank; The connecting component A (23) includes an arc-shaped cover A (231), an inner extension tube (232), a sealing plate A (233), and an L-shaped ejector pin (234); the end of the arc-shaped cover A (231) extends inward and is integrally connected to the inner extension tube (232); the end of the inner extension tube (232) is connected to the sealing plate A (233) via a spring A (235); the L-shaped ejector pin (234) is symmetrically installed on the upper and lower sides inside the inner extension tube (232); the arc-shaped cover A (231) is matched and installed at one end of the semi-circular cavity; The connecting component B (24) includes an arc-shaped cover B (241), an extension tube (242), a sealing plate B (243), and a straight pin (244); the end of the arc-shaped cover B (241) is integrally connected to the extension tube (242) outward; the sealing plate B (243) is sealed and installed at one end of the extension tube (242) by a spring B (245), and the sealing plate B (243) is located inside the arc-shaped cover B (241); the straight pins (244) are symmetrically installed on the left and right sides of the outer end of the extension tube (242); the arc-shaped cover B (241) is matched and installed at one end of the semi-circular cavity.

2. The hydraulic press punch cooling device as described in claim 1, characterized in that, The support assembly includes two U-shaped support rods (3); the two U-shaped support rods (3) are symmetrically installed on both sides of the vertical arm of the L-shaped hanger (11); a cross groove (31) is opened at the end of one of the U-shaped support rods (3); the semi-circular ring cooling sleeve assembly is slidably installed in the horizontal groove of the cross groove (31).

3. A hydraulic press punch cooling device as described in claim 2, characterized in that, The drive assembly includes an electric telescopic rod (41) and a cross slider (42); the cross slider (42) is slidably installed in the cross groove (31); the electric telescopic rod (41) is fixedly installed on the inner side of the cross groove (31); the two ends of the cross slider (42) are respectively connected to the output end of the electric telescopic rod (41) and the semi-circular cooling sleeve assembly.

4. A hydraulic press punch cooling device as described in claim 3, characterized in that, The cross-sections of the outer supporting semicircular ring (21) and the inner heat-conducting semicircular ring (22) are both U-shaped; the upper and lower ends of the inner arc-shaped opening of the outer supporting semicircular ring (21) are symmetrically installed with arc-shaped limiting strips (211) with L-shaped cross-sections; the upper and lower ends of the outer arc-shaped opening of the inner heat-conducting semicircular ring (22) are symmetrically installed with arc-shaped wrapping strips (221) with C-shaped cross-sections; the inner heat-conducting semicircular ring (22) is matched and installed inside the outer supporting semicircular ring (21); the arc-shaped wrapping strip (221) extends into the interior of the outer supporting semicircular ring (21) and matches the corresponding arc-shaped limiting strip (211).

5. A hydraulic press punch cooling device as described in claim 4, characterized in that, The inner heat-conducting semi-circular ring (22) is integrally fixed at both ends of the end cap (222) so that both ends of the inner heat-conducting semi-circular ring (22) are sealed; the inner heat-conducting semi-circular ring (22) is made of metal heat-conducting material or silicone heat-conducting material.

6. A hydraulic press punch cooling device as described in claim 1, characterized in that, The outer end of the extended tube (242) has symmetrically opened limiting sliding openings (2421) on the upper and lower side walls; when the driving component drives the two semi-circular cooling sleeve assemblies to move relative to each other to form a circular cooling cavity, the extended tube (242) is slidably matched and installed in the inner extension tube (232); the L-shaped ejector pin (234) slides into the limiting sliding opening (2421) and pushes open the sealing plate B (243); the straight ejector pin (244) pushes open the sealing plate A (233).

7. A hydraulic press punch cooling device as described in claim 6, characterized in that, Arc-shaped slide bars (27) are provided on the outer sides of both arc-shaped cover A (231) and arc-shaped cover B (241); arc-shaped limiting grooves (212) are opened on the inner sides of both ends of the outer support semi-circular ring (21); the arc-shaped slide bars (27) are correspondingly slidably matched in the arc-shaped limiting grooves (212).

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