Cold rolling die for steel casting and forging

By using cooling pipes to cool the steel casting and forging cold rolling dies and removing impurities with roller brushes, the problems of reduced compressive strength and surface damage caused by high roll temperature are solved, ensuring steel plate quality and roll life.

CN120961606AInactive Publication Date: 2025-11-18常州市科宇重工科技有限公司
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202511213982.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-28
Publication Date
2025-11-18
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

During the cold rolling process of steel castings and forgings, the rolls experience reduced compressive strength due to high temperatures, resulting in micro-deformation and damage on the surface, which affects the quality of the steel plate.

Method used

A cold rolling die for steel castings and forgings was designed, including a load-bearing column, a die roller clamping mechanism, a pressure-bearing cleaning roller mechanism, a forging cold rolling mechanism, and a roller dirt discharge mechanism. The rollers are forced to cool down through a cold air pipe, and are equipped with roller brushes and storage troughs to remove impurities and avoid contamination of the roller surface.

Benefits of technology

It effectively maintains the roll at a low temperature, improves its compressive strength, prevents scratches and roll marks on the steel plate, and extends the service life of the roll.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120961606A_ABST
    Figure CN120961606A_ABST
Patent Text Reader

Abstract

The invention relates to the technical field of cold rolling dies, in particular to a steel casting forge piece cold rolling die which comprises a bearing column, a die roller clamping mechanism installed on the bearing column, a pressure-bearing roller cleaning mechanism installed on the die roller clamping mechanism, a forge piece cold rolling mechanism installed in the pressure-bearing roller cleaning mechanism and a roller scale discharging mechanism installed on the pressure-bearing roller cleaning mechanism. The pressure-bearing roller cleaning mechanism comprises a first protecting cover and a second protecting cover; the forge piece cold rolling mechanism comprises a main shaft movably installed in the first protective cover and the second protective cover, and a built-in hole is formed in the main shaft. The die roller clamping mechanism and the pressure-bearing roller cleaning mechanism are arranged, the pressure-bearing roller freely moves in the pressure-bearing roller cleaning mechanism, when the pressure-bearing roller is driven to conduct cold rolling treatment on a steel plate, cold air fed into the pressure-bearing roller through the cold air pipe can conduct forced cooling on a roller body, and therefore the compression resistance of the pressure-bearing roller is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of cold rolling die technology, specifically to a cold rolling die for steel castings and forgings. Background Technology

[0002] Steel castings and forgings are steel products produced through a cold rolling process, also known as cold-rolled steel. At room temperature, steel plates are further thinned using rolls.

[0003] Cold rolling of steel castings and forgings requires rolling of steel plates using rolls of different sizes. However, the mutual compression between the rolls and the steel plates at room temperature generates heat. As the steel plates are continuously delivered and the rolls rotate continuously, the rolls heat up rapidly. If the rolls heat up too much, the compressive strength of the roll surface will decrease. The subsequent pressure of the steel plates on the heated roll surface will cause micro-deformation problems on the roll surface. At the same time, inclusions on the steel plate surface will also cause further damage to the rolls. The micro-deformed and damaged rolls will cause problems such as scars, scratches, and roll marks on the subsequent cold-rolled steel plates.

[0004] In view of this, a cold rolling die for steel castings and forgings was designed to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted in this invention is as follows: A cold rolling die for steel castings and forgings includes a load-bearing column, a die roller clamping mechanism mounted on the load-bearing column, a pressure-bearing cleaning roller mechanism mounted on the die roller clamping mechanism, a cold rolling mechanism for forgings mounted within the pressure-bearing cleaning roller mechanism, and a roller fouling discharge mechanism mounted on the pressure-bearing cleaning roller mechanism. The pressure-bearing cleaning roller mechanism includes a first cover and a second cover. The cold rolling mechanism for forgings includes a main shaft movably mounted within the first cover and the second cover. The main shaft has an internal cavity and an air hole in its middle. A first gear is mounted at one end of the main shaft, a first chain is driven by the first gear, a second gear is mounted at the other end of the main shaft, a second chain is driven by the second gear, a cold air pipe is inserted into the port of the internal cavity, two heat exchange rollers are mounted outside the main shaft, a bushing is fixedly mounted inside the heat exchange rollers, three ring pads are mounted outside the bushing, and a pressure roller is mounted outside the multiple ring pads. The heat exchange rollers are respectively mounted at both ends of the pressure rollers, and the heat exchange rollers have through holes inside their interiors.

[0007] In a preferred embodiment, the present invention may be further configured such that: the end of the main shaft facing the second cover has an insertion hole; The pressure-bearing cleaning roller mechanism also includes an auxiliary component, which includes a pad fixedly installed on the outer wall of the second cover, a support plate fixedly installed outside the pad, an auxiliary rotating shaft inserted into the insertion hole, the auxiliary rotating shaft being movably installed inside the pad, a sliding column fixedly installed outside the auxiliary rotating shaft, a sliding sleeve movably installed outside the sliding column, a pipe of the sliding sleeve being movably installed inside the support plate, an inner pad movably installed inside the sliding column, and a support rod movably installed inside the inner pad and extending to the outside of the sliding sleeve. The top of the support rod is movably mounted with a beam frame and a roller brush installed on the outside of the beam frame. The roller brush is adapted to fit against the outer wall of the pressure roller.

[0008] In a preferred embodiment, the present invention can be further configured as follows: the roller dirt discharge mechanism includes two side plates and two insert rods, an end plate is fixedly installed on the outer end of the side plate and a screw is movably installed inside the end plate, and a clamp is movably installed on the inner end of the screw, the clamp being located inside the side plate; A spring is fixedly installed on the inner wall of the side plate, and the other end of the spring is fixedly installed on the clamp. One of the side panels is fixedly installed on the first cover, and the other side panel is fixedly installed on the second cover; The two insertion rods are respectively movably installed in two clamps, one clamp is fixedly installed with a sewage discharge component, and the other clamp is fixedly installed with a second plug; A storage trough plate is fixedly installed between the sewage discharge component and the second plug, and an arc-shaped groove adapted to fit the pressure roller is opened on the inner side of the storage trough plate.

[0009] In a preferred embodiment, the present invention may be further configured as follows: the mold roller clamping mechanism includes a bottom beam plate and a top beam plate installed outside the load-bearing column, a limiting frame installed at the outer end of the bottom beam plate, two combined bolts installed inside the bottom beam plate and the top beam plate, a truss fixedly installed at the bottom of the bottom beam plate, a main cantilever movably installed at one end of the truss, a secondary cantilever movably installed at the other end of the truss, a motor fixedly installed inside the main cantilever, a drive gear installed on the motor, and a drive chain connected to the drive gear. An enclosure is installed inside the main cantilever.

[0010] In a preferred embodiment, the present invention may be further configured such that the mold roller clamping mechanism further includes a width adjustment component, the width adjustment component including two cover plates installed in the bottom beam plate and the top beam plate, four caps installed at both ends of the two cover plates, bolts inserted into the caps and fixed to the cover plates, nuts movably installed in the two caps, and guide rods movably installed in the nuts.

[0011] In a preferred embodiment, the present invention may be further configured such that: a first transmission member is movably mounted on the top of the first cover, and two clamps are fixedly mounted on the outer wall of the bottom end of the first cover; The air cooling pipe is installed in two clamps, and a second transmission component is movably installed inside the second cover.

[0012] In a preferred embodiment, the present invention can be further configured such that: the sewage discharge assembly includes a first plug, a conduit is fixedly installed at the bottom of the first plug, the inner cavity of the conduit is connected to the inner side of the storage tank plate, and the conduit is used to discharge impurities and dirt in the storage tank plate.

[0013] In a preferred embodiment, the present invention may be further configured such that the sewage discharge assembly further includes two limiting posts, one of which is fixedly installed on the top of the first plug and the other limiting post is fixedly installed on the top of the second plug.

[0014] In a preferred embodiment, the present invention can be further configured such that the beam frame is composed of a short plate, an extended rod, and an L-shaped end plate, wherein the interior of the short plate and the L-shaped end plate are provided with sliding tracks, and the short plate and the L-shaped end plate are respectively movably installed on the outside of two limiting column heads.

[0015] In a preferred embodiment, the present invention can be further configured such that: four evenly distributed locking blocks are fixedly installed on the inner wall of the ring pad, and a slide rail adapted to the locking blocks is provided on the outer wall of the main shaft.

[0016] By adopting the above technical solution, the beneficial effects achieved by the present invention are as follows: 1. The present invention sets up a mold roller clamping mechanism and a pressure-bearing cleaning roller mechanism. The pressure roller moves freely in the pressure-bearing cleaning roller mechanism. When the pressure roller is driven to perform cold rolling on the steel plate, the cold air sent into the pressure roller through the cold air pipe will force the roller body to cool down, thereby improving the pressure resistance of the pressure roller.

[0017] 2. This invention provides a storage trough plate on the outer wall of the pressure roller and a roller brush attached to the pressure roller directly above the storage trough plate. When the auxiliary component drives the beam frame and the roller brush to vibrate at high frequency, the roller brush can effectively remove impurities and dirt from the surface of the low-temperature pressure roller. The removed impurities and dirt will eventually be stored in the storage trough plate, thereby avoiding scratches on the subsequent steel plates caused by impurities on the surface of the pressure roller.

[0018] 3. This invention releases the hot air inside the pressure roller outward through two heat exchange rollers. The airflow that blows directly towards both sides of the steel plate blows away impurities and dirt flying in the surrounding air, thereby preventing impurities trapped in the air on both sides of the steel plate from being carried to the surface of the steel plate, thus reducing the interference of airborne impurities on the cold rolling operation of the steel plate and the pressure roller. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the use of the present invention; Figure 2 This is a bottom view diagram of the present invention; Figure 3 This is an exploded view of the mold roller clamping mechanism of the present invention; Figure 4 This is an exploded view of the pulse width modulation component of the present invention; Figure 5 This is a partial schematic diagram of the present invention; Figure 6 This is an exploded view of the cold rolling mechanism for forgings according to the present invention; Figure 7 This is a cross-sectional schematic diagram of the spindle of the present invention; Figure 8 This is an exploded view of the roller dirt discharge mechanism of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle; Figure 10 This is a schematic diagram of the pressure-bearing cleaning roller mechanism of the present invention; Figure 11 This is an exploded view of the assistive component of the present invention.

[0020] Figure label: 100. Load-bearing column; 200. Mold roller clamping mechanism; 210. Bottom beam plate; 2101. Top beam plate; 2102. Combination bolt; 220. Limiting frame; 230. Main cantilever; 2301. Motor; 2302. Drive gear; 2303. Drive chain; 240. Secondary cantilever; 250. Truss; 260. Width adjustment assembly; 2601. Cover plate; 2602. Sealing cap; 2603. Bolt; 2604. Nut; 2605. Guide rod; 300. Pressure-bearing cleaning roller mechanism; 310. First protective cover; 3101. First transmission component; 3102. Clamp; 320. Second protective cover; 3201. Second transmission component; 330. Auxiliary assembly; 3301. Foot pad; 3302. Auxiliary rotation shaft; 3303. Sliding column; 3304. Sliding sleeve; 3305. Inner pad; 3306. Support rod; 3307. Support plate; 340. Beam frame; 3401. Short plate; 350. Roller brush; 400. Roller sludge discharge mechanism; 410. Sewage discharge assembly; 4101. First plug; 4102. Limiting column head; 4103. Guide tube; 420. Second plug; 430. Insert rod; 440. Side plate; 4401. End plate; 4402. Spring; 4403. Screw; 4404. Clamp; 450. Storage trough plate; 500. Cold rolling mechanism for forgings; 510. Main shaft; 5101. First gear; 5102. First chain; 5103. Second gear; 5104. Second chain; 5105. Insertion hole; 5106. Internal hole; 5107. Air hole; 520. Cold air pipe; 530. Heat exchange roller head; 5301. Bushing; 5302. Ring washer; 5303. Through hole; 540. Pressure roller. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0022] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0023] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a cold rolling die for steel castings and forgings.

[0024] Example 1: Combination Figures 1 to 11 As shown, the present invention provides a cold rolling die for steel castings and forgings, comprising a support column 100, a die roller clamping mechanism 200 mounted on the support column 100, a pressure-bearing cleaning roller mechanism 300 mounted on the die roller clamping mechanism 200, a forging cold rolling mechanism 500 mounted within the pressure-bearing cleaning roller mechanism 300, and a roller sludge removal mechanism 400 mounted on the pressure-bearing cleaning roller mechanism 300. The die roller clamping mechanism 200 provides stabilizing support for the pressure-bearing cleaning roller mechanism 300, the pressure-bearing cleaning roller mechanism 300 provides support for the cold rolling of the forging cold rolling mechanism 500, the roller sludge removal mechanism 400 cleans inclusions in the forging cold rolling mechanism 500, and the forging cold rolling mechanism 500 maintains a low temperature at all times to effectively cold roll the steel plate.

[0025] The mold roller clamping mechanism 200 includes a bottom beam plate 210 and a top beam plate 2101 installed outside the load-bearing column 100, a limiting frame 220 installed at the outer end of the bottom beam plate 210, two combination bolts 2102 installed inside the bottom beam plate 210 and the top beam plate 2101, a truss 250 fixedly installed at the bottom of the bottom beam plate 210, a main cantilever 230 movably installed at one end of the truss 250, a secondary cantilever 240 movably installed at the other end of the truss 250, a motor 2301 fixedly installed inside the main cantilever 230, and a motor 2301 installed inside the main cantilever 230. The drive gear 2302 on the motor 2301, the drive chain 2303 connected to the drive gear 2302, and the width adjustment assembly 260 include two cover plates 2601 installed in the bottom beam plate 210 and the top beam plate 2101, four caps 2602 installed at both ends of the two cover plates 2601, bolts 2603 inserted into the caps 2602 and fixed on the cover plates 2601, nuts 2604 movably installed in the two caps 2602, and guide rods 2605 movably installed in the nuts 2604; A chassis is installed inside the main cantilever 230; The pressure cleaning roller mechanism 300 includes a first cover 310 and a second cover 320; The forging cold rolling mechanism 500 includes a main shaft 510 movably installed inside a first cover 310 and a second cover 320. The main shaft 510 has an internal hole 5106 and an air hole 5107 in the middle. A first gear 5101 is installed at one end of the main shaft 510, a first chain 5102 is connected to the first gear 5101, a second gear 5103 is installed at the other end of the main shaft 510, a second chain 5104 is connected to the second gear 5103, a cold air pipe 520 is inserted into the port of the internal hole 5106, two heat exchange rollers 530 are installed outside the main shaft 510, a bushing 5301 is fixedly installed inside the heat exchange rollers 530, three ring pads 5302 are installed outside the bushing 5301, and a pressure roller 540 is installed outside the multiple ring pads 5302. The heat exchange roller head 530 is installed at both ends of the pressure roller 540, and the heat exchange roller head 530 has a through hole 5303 inside; The main shaft 510 has an insertion hole 5105 at one end facing the second cover 320; The pressure cleaning roller mechanism 300 also includes an auxiliary component 330, which includes a pad 3301 fixedly installed on the outer wall of the second cover 320, a support plate 3307 fixedly installed outside the pad 3301, an auxiliary rotating shaft 3302 inserted into the insertion hole 5105, the auxiliary rotating shaft 3302 movably installed inside the pad 3301, a sliding column 3303 fixedly installed outside the auxiliary rotating shaft 3302, a sliding sleeve 3304 movably installed outside the sliding column 3303, a pipe of the sliding sleeve 3304 movably installed inside the support plate 3307, an inner pad 3305 movably installed inside the sliding column 3303, and a support rod 3306 movably installed inside the inner pad 3305 and extending to the outside of the sliding sleeve 3304. A beam frame 340 and a roller brush 350 are movably mounted on the top of the support rod 3306. The roller brush 350 is adapted to fit against the outer wall of the pressure roller 540. The top of the first cover 310 is movably mounted with a first transmission component 3101, and two clamps 3102 are fixedly mounted on the outer wall of the bottom end of the first cover 310. The air conditioning pipe 520 is installed in two clamps 3102, and the second transmission component 3201 is movably installed in the second cover 320. The inner wall of the ring pad 5302 is fixedly equipped with four evenly distributed locking blocks, and the outer wall of the main shaft 510 is provided with a slide rail adapted to the locking blocks.

[0026] Before cold rolling the steel plate, the device needs to be pre-adjusted. The load-bearing column 100 is fixedly installed on the hydraulic sub-rod. As the hydraulic sub-rod extends, the load-bearing column 100 fixed on the hydraulic sub-rod will drive the die roller clamping mechanism 200 to rise and fall smoothly as a whole. When the die roller clamping mechanism 200 drives the forging cold rolling mechanism 500 to move closer and closer to the steel plate, until the pressure roller 540 presses against the top of the steel plate. When the steel plate is being delivered at a constant speed, the pressure roller 540 pressing on the top of the steel plate will cold roll the steel plate. As the cold rolling proceeds, once the pressure roller 540 heats up, the cold air input through the cold air pipe 520 will enter the built-in hole 5106. Finally, the cold air will be transferred from the air hole 5107 to the cavity formed by the pressure roller 540 and the two heat exchange roller heads 530. The pressure roller 540, which is forcibly cooled by the cold air, can maintain the best compressive strength to cold roll the steel plate. This can avoid the problem of the pressure roller 540's compressive strength decreasing due to heating and being worn by impurities or dirt.

[0027] At the same time, the auxiliary shaft rod 3302 inserted into the insertion hole 5105, together with the sliding column 3303, pushes the inner pad 3305 and the support rod 3306 to reciprocate. The support rod 3306 will vibrate at high frequency along the tray 3307, and the support rod 3306 will pull the beam frame 340 and the roller brush 350 to vibrate and brush along the outer wall of the pressure roller 540, thereby preventing the pressure roller 540 from interfering with and causing wear to the subsequent steel plate by the surface impurities or dirt after one rotation.

[0028] Example 2: Combination Figures 6 to 11 As shown, based on Embodiment 1, the roller dirt discharge mechanism 400 includes two side mother plates 440 and two insert rods 430. An end plate 4401 is fixedly installed on the outer end of the side mother plate 440 and a screw 4403 is movably installed inside the end plate 4401. A clamp 4404 is movably installed on the inner end of the screw 4403 and is located inside the side mother plate 440.

[0029] Preferably, the two side plates 440 are perpendicular to the first cover 310 and the second cover 320 respectively. When the control screw 4403 rotates forward, the clamp 4404 will be pulled by the screw 4403 and move closer to the end plate 4401. The clamp 4404 will drive the insertion rod 430 to slide outward. At this time, the distance between the storage tray plate 450 and the pressure roller 540 can be adjusted.

[0030] A spring 4402 is fixedly installed on the inner wall of the side mother plate 440, and the other end of the spring 4402 is fixedly installed on the clamp 4404. One side panel 440 is fixedly installed on the first cover 310, and the other side panel 440 is fixedly installed on the second cover 320; Two insert rods 430 are respectively movably installed in two clamps 4404. A sewage discharge component 410 is fixedly installed on one clamp 4404, and a second plug 420 is fixedly installed on the other clamp 4404. A storage trough plate 450 is fixedly installed between the sewage discharge component 410 and the second plug 420. The inner side of the storage trough plate 450 is provided with an arc-shaped groove adapted to fit the pressure roller 540. The sewage discharge assembly 410 includes a first plug 4101, and a conduit 4103 is fixedly installed at the bottom of the first plug 4101. The inner cavity of the conduit 4103 is connected to the inner side of the storage tank plate 450. The conduit 4103 is used to discharge impurities and dirt in the storage tank plate 450.

[0031] The sewage discharge assembly 410 also includes two limiting posts 4102, one of which is fixedly installed on the top of the first plug 4101, and the other limiting post 4102 is fixedly installed on the top of the second plug 420. The beam frame 340 is composed of a short plate 3401, an extended rod and an L-shaped end plate. The inside of the short plate 3401 and the L-shaped end plate are provided with sliding tracks, and the short plate 3401 and the L-shaped end plate are respectively movably installed on the outside of the two limiting column heads 4102.

[0032] Preferably, the roller brush 350 is movably mounted on the extended rod. As the pressure roller 540 rotates, the roller brush 350 will also rotate in coordination with the pressure roller 540. When the beam frame 340 is pulled and performs high-frequency extension activities along the outside of the two limiting column heads 4102, the roller brush 350 will also perform lateral cleaning of impurities and dirt on the outer wall of the pressure roller 540 while rotating in coordination with the pressure roller 540.

[0033] The working principle and usage process of this invention: The end of the load-bearing column 100 and the hydraulic rod are fixed in advance. At this time, the mold roller clamping mechanism 200 fixed by the load-bearing column 100 will provide an effective support platform for the pressure cleaning roller mechanism 300 and the forging cold rolling mechanism 500. When the external hydraulic clamp is running, after the hydraulic rod drives the load-bearing column 100 to descend, the pressure roller 540 will move closer to the worktable of the cold rolling mill. As the cold rolling table delivers the steel plate at a uniform speed, the pressure roller 540, which is continuously pressed downwards, performs cold rolling on the steel plate. When the steel plate is cold rolled, the pressure roller 540 will heat up under the pressure between the steel plate and the pressure roller 540. Once the pressure roller 540 continues to heat up, its compressive strength will decrease. The subsequent reverse pressure from the steel plate will cause pitting on the surface of the pressure roller 540. Therefore, in order to maintain the compressive strength of the pressure roller 540 during continuous operation, cold air is introduced into the interior hole 5106 through the cold air pipe 520. After entering the interior hole 5106, the cold air will enter the cavity formed by the pressure roller 540 and the two heat exchange roller heads 530 through the air hole 5107. At this time, the pressure roller 540 will be rapidly cooled down until the pressure roller 540 maintains optimal compressive performance at a low temperature.

[0034] As the main shaft 510 rotates, the auxiliary shaft rod 3302 inserted into the insertion hole 5105 will drive the sliding column 3303 to rotate. The sliding sleeve 3304, which is limited and constrained by the support plate 3307, will drive the support rod 3306 to reciprocate. The beam frame 340 and roller brush 350 installed on the support rod 3306 will brush at high speed along the surface of the pressure roller 540. Metal fragments or dirt falling through the gaps of the roller brush 350 and the pressure roller 540 will be guided along the arc-shaped groove on the inner side of the storage trough plate 450. When the external exhaust pipe is connected to the conduit 4103, the storage tray plate 450, which exhausts air outward through the conduit 4103, can quickly discharge the stored metal scraps and dirt. The above methods can enhance the cleanliness of the pressure roller 540 during continuous operation, reduce the degree of damage to the roller wall, and thus improve the service life of the pressure roller 540.

[0035] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cold rolling die for steel castings and forgings, comprising a load-bearing column (100), characterized in that, It also includes a mold roller clamping mechanism (200) installed on the load-bearing column (100), a pressure cleaning roller mechanism (300) installed on the mold roller clamping mechanism (200), a forging cold rolling mechanism (500) installed in the pressure cleaning roller mechanism (300), and a roller sludge discharge mechanism (400) installed on the pressure cleaning roller mechanism (300). The pressure-bearing cleaning roller mechanism (300) includes a first cover (310) and a second cover (320); The forging cold rolling mechanism (500) includes a main shaft (510) movably installed within a first cover (310) and a second cover (320). The main shaft (510) has an internal cavity (5106) and an air hole (5107) in its middle section. A first gear (5101) is installed at one end of the main shaft (510), a first chain (5102) is connected to the first gear (5101), and a second chain (5102) is installed at the other end of the main shaft (510). The gear (5103), the second chain (5104) connected to the second gear (5103), the cooling pipe (520) inserted into the port of the built-in hole (5106), the two heat exchange rollers (530) installed outside the main shaft (510), the bushing (5301) fixedly installed inside the heat exchange roller (530), the three ring pads (5302) installed outside the bushing (5301), and the pressure roller (540) installed outside the multiple ring pads (5302).

2. The cold rolling die for steel castings and forgings according to claim 1, characterized in that, The main shaft (510) has an insertion hole (5105) at one end facing the second cover (320); The pressure-bearing cleaning roller mechanism (300) also includes an auxiliary component (330); The assistive assembly (330) includes a foot (3301) fixedly installed on the outer wall of the second cover (320), a support plate (3307) fixedly installed outside the foot (3301), an assistive shaft (3302) inserted into the insertion hole (5105), the assistive shaft (3302) being movably installed inside the foot (3301), a sliding column (3303) fixedly installed outside the assistive shaft (3302), a sliding sleeve (3304) movably installed outside the sliding column (3303), a pipe of the sliding sleeve (3304) movably installed inside the support plate (3307), an inner pad (3305) movably installed inside the sliding column (3303), and a support rod (3306) movably installed inside the inner pad (3305) and extending to the outside of the sliding sleeve (3304). A beam frame (340) is movably installed on the top of the support rod (3306), and a roller brush (350) is installed on the outside of the beam frame (340). The roller brush (350) is adapted to fit against the outer wall of the pressure roller (540).

3. The cold rolling die for steel castings and forgings according to claim 1, characterized in that, The roller fouling discharge mechanism (400) includes two side plates (440) and two insert rods (430). An end plate (4401) is fixedly installed on the outer end of the side plate (440). A screw (4403) is movably installed inside the end plate (4401), and a clamp (4404) is movably installed on the inner end of the screw (4403). The clamp (4404) is located inside the side plate (440). A spring (4402) is fixedly installed on the inner wall of the side plate (440), and the other end of the spring (4402) is fixedly installed on the clamp (4404); One of the side panels (440) is fixedly mounted on the first cover (310), and the other side panel (440) is fixedly mounted on the second cover (320); The two insertion rods (430) are respectively movably installed in two clamps (4404), one of which is fixedly installed with a sewage discharge component (410), and the other is fixedly installed with a second plug (420). A storage trough plate (450) is fixedly installed between the sewage discharge component (410) and the second plug (420), and an arc-shaped groove adapted to fit the pressure roller (540) is opened on the inner side of the storage trough plate (450).

4. The cold rolling die for steel castings and forgings according to claim 1, characterized in that, The mold roller clamping mechanism (200) includes a bottom beam plate (210) and a top beam plate (2101) installed outside the load-bearing column (100), a limiting frame (220) installed at the outer end of the bottom beam plate (210), two combined bolts (2102) installed inside the bottom beam plate (210) and the top beam plate (2101), a truss (250) fixedly installed at the bottom of the bottom beam plate (210), a main cantilever (230) movably installed at one end of the truss (250), a secondary cantilever (240) movably installed at the other end of the truss (250), a motor (2301) fixedly installed inside the main cantilever (2301), a drive gear (2302) installed on the motor (2301), and a drive chain (2303) connected to the drive gear (2302). The main cantilever (230) is equipped with a box.

5. A cold rolling die for steel castings and forgings according to claim 4, characterized in that, The mold roller clamping mechanism (200) further includes a width adjustment component (260), which includes two cover plates (2601) installed in the bottom beam plate (210) and the top beam plate (2101), four caps (2602) installed at both ends of the two cover plates (2601), bolts (2603) inserted into the caps (2602) and fixed on the cover plates (2601), nuts (2604) movably installed in the two caps (2602), and guide rods (2605) movably installed in the nuts (2604).

6. A cold rolling die for steel castings and forgings according to claim 1, characterized in that, The top of the first cover (310) is movably mounted with a first transmission component (3101), and two clamps (3102) are fixedly mounted on the outer wall of the bottom end of the first cover (310). The air cooling pipe (520) is installed in two clamps (3102), and a second transmission component (3201) is movably installed in the second cover (320).

7. A cold rolling die for steel castings and forgings according to claim 3, characterized in that, The sewage discharge assembly (410) includes a first plug (4101), and a conduit (4103) is fixedly installed at the bottom of the first plug (4101). The inner cavity of the conduit (4103) is connected to the inner side of the storage tank plate (450). The conduit (4103) is used to discharge impurities and dirt in the storage tank plate (450).

8. A cold rolling die for steel castings and forgings according to claim 3, characterized in that, The sewage discharge assembly (410) also includes two limiting posts (4102), one of which is fixedly installed on the top of the first plug (4101), and the other limiting post (4102) is fixedly installed on the top of the second plug (420).

9. A cold rolling die for steel castings and forgings according to claim 2, characterized in that, The beam frame (340) is composed of a short plate (3401), an extended rod and an L-shaped end plate. The short plate (3401) and the L-shaped end plate are both provided with sliding tracks. The short plate (3401) and the L-shaped end plate are respectively movably installed on the outside of two limiting column heads (4102).

10. A cold rolling die for steel castings and forgings according to claim 1, characterized in that, The inner wall of the ring pad (5302) is fixedly installed with four evenly distributed locking blocks, and the outer wall of the main shaft (510) is provided with a slide rail adapted to the locking blocks. The heat exchange roller head (530) is installed at both ends of the pressure roller (540), and the heat exchange roller head (530) has a through hole (5303) inside.