Blanking die for upper crown

By introducing a movable cooling plate and circulating cooling pipe into the upper center plate mold, the problem of excessive mold temperature was solved, achieving stable mold cooling and convenient maintenance, and improving production efficiency.

CN224487563UActive Publication Date: 2026-07-14NANJING LIYUAN RAIL TRAFFIC EQUIP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING LIYUAN RAIL TRAFFIC EQUIP CO LTD
Filing Date
2025-07-07
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The existing top plate molds generate excessively high temperatures during actual use, affecting continuous processing and resulting in low production efficiency.

Method used

A mold structure including an upper mold, a lower mold, and a movable cooling plate was designed. The movable cooling plate is equipped with a circulating cooling pipe. The movable cooling plate is raised and lowered by a telescopic rod driven by an electric cylinder. Combined with a positioning ring and a magnetic ring, it can be quickly disassembled and adjusted in position. The coolant exchanges heat between the cooling plate and the circulating cooling pipe to keep the mold temperature stable.

Benefits of technology

It achieves effective cooling of the mold, adapts to long-term working requirements, facilitates disassembly and maintenance, and improves production efficiency and ease of operation.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224487563U_ABST
    Figure CN224487563U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of blanking mould for upper heart disc belongs to upper heart disc mould technical field.The utility model of a kind of blanking mould for upper heart disc, including upper mould, lower mould and movable cooling plate, the inside of movable cooling plate is installed with circulating cooling pipe, the lower end of movable cooling plate is installed with positioning ring, and the inside of lower mould is provided with electric cylinder.The utility model solves the problem that the temperature of mould main body is too high in the actual use process of existing upper heart disc mould, which is not conducive to continuous processing work and affects production efficiency.The utility model imports coolant through the circulating cooling pipe inside movable cooling plate, and the coolant fully exchanges heat with the cooling plate inside lower mould during flowing, cools down lower mould, maintains the position stability of movable cooling plate through positioning groove and mounting groove, thereby adapts long-term work, is convenient for disassembly and maintenance and repair work, and has high practicality.
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Description

Technical Field

[0001] This utility model relates to the field of upper center plate mold technology, specifically a blanking mold for upper center plates. Background Technology

[0002] The forged steel top center plate of railway freight cars connects the car body and the bogie. It is part of the center beam and is an important component of railway freight cars. The forged steel top center plate of railway freight cars is a square or round thin plate forging. The forged top center plate has changed the internal defects of the original cast center plate, such as segregation, porosity, air holes, and slag inclusions, thus improving the safety and reliability of the freight car during operation.

[0003] Chinese patent CN115255244A discloses a forging die for a forged steel upper center plate for railway freight cars, which relates to the field of die forging technology. It includes an upper forging die and a lower forging die. The forging die for a forged steel upper center plate for railway freight cars of this patent makes reasonable use of the space of the module, has a novel structure, strong practicality, and can effectively improve production efficiency. The forged steel upper center plate for railway freight cars produced has a uniform internal structure, which improves the strength and fatigue resistance of the product.

[0004] In actual use, the temperature of the upper center plate mold of the above-mentioned patent is too high, which is not conducive to continuous processing and affects production efficiency; therefore, it does not meet the existing needs. In response, we have proposed a blanking mold for the upper center plate. Utility Model Content

[0005] The purpose of this utility model is to provide a blanking mold for an upper center plate, which solves the problem mentioned in the background art that the temperature of the mold body is too high during actual use, which is not conducive to continuous processing and affects production efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a blank-making mold for an upper center plate, comprising an upper mold, a lower mold, and a movable cooling plate. The movable cooling plate is disposed inside the lower mold and slidably connected to the lower mold. The lower mold is installed below the upper mold and connected to the upper mold by a guide slide rod. A circulating cooling pipe is installed inside the movable cooling plate. A positioning ring is installed at the lower end of the movable cooling plate, and an electric cylinder is disposed inside the lower mold.

[0007] Preferably, the lower end of the guide slide rod extends into the interior of the lower mold and is slidably connected to the lower mold, while the upper end of the guide slide rod is fixedly connected to the upper mold.

[0008] Preferably, a heat insulation plate is fixedly connected to the upper end face of the upper mold, and the heat insulation plate is used to connect the forging press.

[0009] Preferably, a forming template is installed on the lower end face of the upper mold, and an integrally formed blanking groove is provided inside the forming template.

[0010] Preferably, the upper end of the lower mold is provided with an integrally formed molding cavity, and the blanking groove is connected to the molding cavity and the edges are sealed.

[0011] Preferably, the lower mold has an integrally formed mounting groove inside, a cooling plate is installed at the upper end of the mounting groove, the cooling plate is embedded inside the lower mold and fixedly connected to the lower mold, and an integrally formed positioning groove is provided on the lower end face of the cooling plate, the positioning groove is used to position the movable cooling plate.

[0012] Preferably, the electric cylinder is fixedly connected to the lower end of the lower mold, and the upper end of the electric cylinder is provided with a telescopic rod, the upper end of which is embedded inside the positioning ring and abuts against the positioning ring.

[0013] Preferably, the lower end face of the movable cooling plate is provided with a maintenance plate, the positioning ring is connected to the maintenance plate by welding, a magnetic ring is installed inside the positioning ring, and the telescopic rod is embedded inside the positioning ring and attracted to the magnetic ring.

[0014] Preferably, the movable cooling plate is fixedly connected to the circulating cooling pipe, the circulating cooling pipe is embedded in the positioning groove and abuts against the cooling plate, and the two ends of the circulating cooling pipe extend out of the interior of the movable cooling plate and are respectively installed with liquid inlet head and liquid outlet head.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In the process of using the upper center plate mold of this utility model, the metal billet heated to the forging temperature is forged and formed inside the forming template by a forging press. The upper and lower molds forge and form the upper center plate billet inside the forming cavity. The forging press applies huge pressure to the upper center plate billet, causing the metal to flow and fill the mold cavity, forming the basic geometric shape and size of the upper center plate. After forming, coolant can be introduced through the circulating cooling pipe inside the movable cooling plate. During the flow of coolant, it fully exchanges heat with the cooling plate inside the lower mold to cool the lower mold. The positioning groove and installation groove maintain the positional stability of the movable cooling plate, thus adapting to long-term work and facilitating disassembly, maintenance and repair. It is highly practical.

[0017] 2. The electric cylinder installed under the lower mold of this utility model can drive the movable cooling plate to rise and fall by adjusting the telescopic rod of the electric cylinder. The movement of the movable cooling plate can move the circulating cooling pipe, which is convenient for disassembly and assembly of the circulating cooling pipe. The telescopic rod is quickly connected by the positioning ring and the magnetic ring. The position of the movable cooling plate can be easily adjusted by the mounting groove. It is convenient to use, easy to operate, and conducive to long-term use. Attached Figure Description

[0018] Figure 1 This is an axonometric view of the front view of this utility model;

[0019] Figure 2 This is an isometric view taken from below after the movable cooling plate of this utility model has been disassembled.

[0020] Figure 3 This is a top-view axonometric drawing of the movable cooling plate of this utility model;

[0021] Figure 4 This is an isometric view of the movable cooling plate of this utility model from below.

[0022] In the diagram: 1. Upper mold; 101. Guide slide rod; 102. Heat insulation plate; 103. Molding template; 104. Blanking groove; 2. Lower mold; 201. Mounting groove; 202. Molding cavity; 203. Cooling plate; 204. Positioning groove; 205. Electric cylinder; 206. Telescopic rod; 3. Movable cooling plate; 301. Circulating cooling pipe; 302. Liquid inlet head; 303. Liquid outlet head; 304. Inspection plate; 305. Positioning ring; 306. Magnetic ring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To address the issue of excessively high temperatures in the main body of existing top-plate molds during actual use, which hinders continuous processing and reduces production efficiency, please refer to [link to relevant documentation]. Figures 1-4 This embodiment provides the following technical solution:

[0025] This embodiment of a blank-making mold for an upper center plate includes an upper mold 1, a lower mold 2, and a movable cooling plate 3. The movable cooling plate 3 is disposed inside the lower mold 2 and slidably connected to the lower mold 2. The lower mold 2 is installed below the upper mold 1 and is connected to the upper mold 1 by a guide slide rod 101. A circulating cooling pipe 301 is installed inside the movable cooling plate 3. A positioning ring 305 is installed at the lower end of the movable cooling plate 3, and an electric cylinder 205 is disposed inside the lower mold 2.

[0026] The upper mold 1 has a forming template 103 installed on its lower end face, and the forming template 103 has an integrally formed blanking groove 104 inside.

[0027] In addition, the upper end of the lower mold 2 is provided with an integrally formed forming cavity 202. The blanking groove 104 is connected to the forming cavity 202 and the edge is sealed. During the use of the upper center plate mold, the metal blank heated to the forging temperature is forged and formed inside the forming template 103 by a forging press. The upper mold 1 and the lower mold 2 forge and form the upper center plate blank inside the forming template 103 and the forming cavity 202. The forging press applies huge pressure to make the metal flow and fill the mold cavity, forming the basic geometry and size of the upper center plate.

[0028] In fact, the lower mold 2 has an integrally formed mounting groove 201 inside. A cooling plate 203 is installed at the upper end of the mounting groove 201. The cooling plate 203 is embedded in the lower mold 2 and fixedly connected to the lower mold 2. An integrally formed positioning groove 204 is provided on the lower end face of the cooling plate 203. The positioning groove 204 is used to position the movable cooling plate 3. Through the positioning groove 204 and the mounting groove 201, the positional stability of the movable cooling plate 3 is maintained, thus adapting to long-term work and facilitating disassembly, maintenance and repair work, which is highly practical.

[0029] Furthermore, the movable cooling plate 3 is fixedly connected to the circulating cooling pipe 301. The circulating cooling pipe 301 is embedded in the positioning groove 204 and abuts against the cooling plate 203. The two ends of the circulating cooling pipe 301 extend out of the interior of the movable cooling plate 3 and are respectively installed with liquid inlet head 302 and liquid outlet head 303. After molding, coolant can be introduced through the circulating cooling pipe 301 inside the movable cooling plate 3. During the flow of coolant, it fully exchanges heat with the cooling plate 203 inside the lower mold 2.

[0030] Specifically, during the use of the upper center plate mold, the metal billet heated to the forging temperature is forged and formed inside the forming template 103 by a forging press. The upper mold 1 and the lower mold 2 forge and form the upper center plate billet inside the forming template 103 and the forming cavity 202. The forging press applies huge pressure to make the metal flow and fill the mold cavity, forming the basic geometric shape and size of the upper center plate. After forming, coolant can be introduced through the circulating cooling pipe 301 inside the movable cooling plate 3. During the flow of coolant, it fully exchanges heat with the cooling plate 203 inside the lower mold 2 to cool the lower mold 2. The positional stability of the movable cooling plate 3 is maintained by the positioning groove 204 and the mounting groove 201, thus adapting to long-term work and facilitating disassembly, maintenance and repair work, making it highly practical.

[0031] To address the issue of existing top plate molds being inconvenient to maintain and repair during practical use, thus affecting long-term operation, please refer to... Figures 1-4 This embodiment provides the following technical solution:

[0032] In this embodiment, the lower end of the guide slide rod 101 extends into the interior of the lower mold 2 and is slidably connected to the lower mold 2, while the upper end of the guide slide rod 101 is fixedly connected to the upper mold 1, thereby maintaining the stable position of the upper mold 1.

[0033] Among them, the upper end face of the upper mold 1 is fixedly connected to the heat insulation plate 102, which is used to connect the forging press.

[0034] It should be noted that the electric cylinder 205 is fixedly connected to the lower end of the lower mold 2. The upper end of the electric cylinder 205 is provided with a telescopic rod 206. The upper end of the telescopic rod 206 is embedded in the positioning ring 305 and abuts against the positioning ring 305. The electric cylinder 205 is provided under the lower mold 2. By adjusting the telescopic rod 206, the electric cylinder 205 drives the movable cooling plate 3 to rise and fall. The rise and fall of the movable cooling plate 3 can move the circulating cooling pipe 301, which facilitates the disassembly and assembly of the circulating cooling pipe 301.

[0035] In addition, a maintenance plate 304 is provided on the lower end face of the movable cooling plate 3. The positioning ring 305 is connected to the maintenance plate 304 by welding. A magnetic ring 306 is installed inside the positioning ring 305. The telescopic rod 206 is embedded inside the positioning ring 305 and is attracted and connected to the magnetic ring 306. The telescopic rod 206 can be quickly connected through the positioning ring 305 and the magnetic ring 306. The position of the movable cooling plate 3 can be easily adjusted through the mounting groove 201. It is convenient to use, easy to operate, and conducive to long-term use.

[0036] Specifically, the electric cylinder 205 installed under the lower mold 2 adjusts the telescopic rod 206 to drive the movable cooling plate 3 to rise and fall. The rise and fall of the movable cooling plate 3 can move the circulating cooling pipe 301, which is convenient for disassembly and assembly of the circulating cooling pipe 301. The telescopic rod 206 is quickly connected by the positioning ring 305 and the magnetic ring 306. The position of the movable cooling plate 3 can be easily adjusted by the mounting groove 201. It is convenient to use, easy to operate, and conducive to long-term use.

[0037] Working principle: During use, a metal billet heated to the forging temperature is forged into shape inside the forming template 103 by a forging press. The upper mold 1 and the lower mold 2 forge the upper center plate blank inside the forming template 103 and the forming cavity 202. The forging press applies huge pressure, causing the metal to flow and fill the mold cavity, forming the basic geometric shape and size of the upper center plate. The electric cylinder 205 adjusts the telescopic rod 206 to drive the movable cooling plate 3 to rise and fall. The rise and fall of the movable cooling plate 3 can move the circulating cooling pipe 301, which is convenient for disassembly and assembly. The telescopic rod 206 is quickly connected via the positioning ring 305 and the magnetic ring 306. The mounting groove 201 facilitates the adjustment of the position of the movable cooling plate 3, making it easy to use. After molding, coolant can be introduced through the circulating cooling pipe 301 inside the movable cooling plate 3. During the flow of coolant, it fully exchanges heat with the cooling plate 203 inside the lower mold 2 to cool the lower mold 2. The positioning groove 204 and the mounting groove 201 maintain the positional stability of the movable cooling plate 3, thus adapting to long-term work and facilitating disassembly, maintenance and repair. It is highly practical.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A blank-making mold for an upper center plate, comprising an upper mold (1), a lower mold (2), and a movable cooling plate (3), characterized in that, The movable cooling plate (3) is slidably connected to the lower mold (2) inside the lower mold (2). The lower mold (2) is installed below the upper mold (1) and is connected to the upper mold (1) by a guide slide rod (101). A circulating cooling pipe (301) is installed inside the movable cooling plate (3). A positioning ring (305) is installed at the lower end of the movable cooling plate (3). An electric cylinder (205) is installed inside the lower mold (2).

2. The blank-making mold for an upper center plate according to claim 1, characterized in that, The lower end of the guide slide rod (101) extends into the interior of the lower mold (2) and is slidably connected to the lower mold (2), while the upper end of the guide slide rod (101) is fixedly connected to the upper mold (1).

3. The blank-making mold for an upper center plate according to claim 1, characterized in that, A heat insulation plate (102) is fixedly connected to the upper end face of the upper mold (1), and the heat insulation plate (102) is used to connect the forging press.

4. A blanking mold for an upper center plate according to claim 3, characterized in that, The lower end face of the upper mold (1) is equipped with a forming template (103), and the interior of the forming template (103) is provided with an integrally formed blanking groove (104).

5. A blanking mold for an upper center plate according to claim 4, characterized in that, The upper end of the lower mold (2) is provided with an integrally formed molding cavity (202), and the blanking groove (104) is connected to the molding cavity (202) and the edges are sealed.

6. A blanking mold for an upper center plate according to claim 1, characterized in that, The lower mold (2) has an integrally formed mounting groove (201) inside. A cooling plate (203) is installed at the upper end of the mounting groove (201). The cooling plate (203) is embedded in the lower mold (2) and fixedly connected to the lower mold (2). An integrally formed positioning groove (204) is provided on the lower end face of the cooling plate (203). The positioning groove (204) is used to position the movable cooling plate (3).

7. A blanking mold for an upper center plate according to claim 1, characterized in that, The electric cylinder (205) is fixedly connected to the lower end of the lower mold (2). The upper end of the electric cylinder (205) is provided with a telescopic rod (206). The upper end of the telescopic rod (206) is embedded in the positioning ring (305) and abuts against the positioning ring (305).

8. A blanking mold for an upper center plate according to claim 7, characterized in that, The lower end face of the movable cooling plate (3) is provided with a maintenance plate (304). The positioning ring (305) is connected to the maintenance plate (304) by welding. A magnetic ring (306) is installed inside the positioning ring (305). The telescopic rod (206) is embedded inside the positioning ring (305) and is attracted and connected to the magnetic ring (306).

9. A blanking mold for an upper center plate according to claim 6, characterized in that, The movable cooling plate (3) is fixedly connected to the circulating cooling pipe (301). The circulating cooling pipe (301) is embedded in the positioning groove (204) and abuts against the cooling plate (203). The two ends of the circulating cooling pipe (301) extend out of the interior of the movable cooling plate (3) and are respectively installed with liquid inlet head (302) and liquid outlet head (303).