Continuous cold rolling mill for beryllium copper production
By adopting a closed-loop coolant system and auxiliary cooling structure in the continuous cold rolling mill, the problem of rising roll surface temperature was solved, and simultaneous cooling of rolls and bars was achieved, improving roll service life and cooling efficiency, and adapting to the processing requirements of different bar sizes.
Patent Information
- Application Number
- CN202610193526.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-10
- Publication Date
- 2026-04-10
AI Technical Summary
During the rolling process, the surface temperature of the rolls in existing continuous cold rolling mills rises, leading to increased friction and potentially causing hot slip defects. Furthermore, the coolant cannot effectively cool the forming grooves, reducing the service life of the rolls.
A closed-loop circulating coolant system is adopted, in which coolant circulates inside the rolls through water guide pipes and return pipes. Combined with auxiliary cooling structure and sealing structure, the rolls and bars are cooled simultaneously to prevent hot slip damage. The cooling plate group can adapt to different bar sizes.
It effectively reduces roll temperature, prevents hot slip damage, extends roll service life, improves cooling efficiency, and adapts to the processing needs of different bar sizes.
Smart Images
Figure CN121820332A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of rolling mills, and in particular to a continuous cold rolling mill for the production of beryllium copper. Background Technology
[0002] A continuous cold rolling mill is a continuous production line specifically designed for rolling beryllium copper alloy bars. Its core function is to achieve continuous cold rolling of beryllium copper through multi-stand collaborative operation. It also optimizes the rolling process by taking into account the unique properties of beryllium copper. Its main structure includes a machine tool, a guide mechanism mounted on one side of the machine tool surface, a roll mechanism mounted on the machine tool surface next to the guide mechanism, a roll adjustment mechanism mounted on the roll mechanism, and a cooling mechanism located at the rear of the machine tool for cooling the roll mechanism. The roll mechanism consists of multiple rolling units arranged sequentially on the machine tool. The rolling device includes a rolling base, rolling frames mounted on both sides of the rolling base, two rolls located between the two rolling frames and mounted on the rolling frames vertically and horizontally, forming slots respectively opened on the roll surfaces of the two rolls for forming the bar forming cavity, and a drive motor mounted on the rolling frames for driving the rolls to rotate. The cooling mechanism includes a coolant tank, multiple water pumps installed in the coolant tank, and a cooling pipe with one end connected to the output end of the water pumps and the other end facing the interval area between any two adjacent rolling devices.
[0003] The existing technology guides the bar to be processed into the forming groove between two rolls in the rolling device through a guiding mechanism. Then, the two rolls are driven by a drive motor to rotate, so that the two rolls roll the bar, compressing and deforming the cross-sectional area of the bar to the size required by the operator. At the same time, a water pump is started to draw out the coolant from the coolant tank, so that the coolant cools the deformed bar.
[0004] While existing cooling mechanisms can cool the bar stock, the intense plastic deformation that occurs during rolling converts approximately 90% of the deformation energy into heat. This heat significantly increases the surface temperature of the rolls, leading to increased friction between the rolls and the bar stock at high temperatures. This can cause hot-slip defects, manifested as scratches or color differences on the bar stock surface. Furthermore, high temperatures reduce the hardness of the quenched layer on the roll surface, resulting in decreased wear resistance and reduced roll life. Since the forming groove of the roll must be completely attached to the bar stock to compress and deform it, existing cooling mechanisms can only cool the bar stock. Because the forming groove is completely attached to the bar stock, the coolant cannot reach the working surface of the forming groove during roll operation. This prevents the cooling pipes from spraying coolant onto the forming groove to cool the roll. Summary of the Invention
[0005] To address the shortcomings of existing technologies, the purpose of this application is to provide a continuous cold rolling mill for beryllium copper production, which enables the cooling mechanism to cool the bars while simultaneously cooling the rolls.
[0006] The above-mentioned objective of this application is achieved through the following technical solution: a continuous cold rolling mill for beryllium copper production, comprising a machine tool, a guiding mechanism mounted on one side of the machine tool surface for guiding the bar stock, a roll mechanism mounted on the machine tool surface on one side of the guiding mechanism, a roll adjustment mechanism mounted on the roll mechanism, and a cooling mechanism disposed at the rear of the machine tool for cooling the roll mechanism. The roll mechanism consists of a plurality of rolling devices arranged sequentially on the machine tool. The cooling mechanism includes a coolant tank, a plurality of water pumps disposed on the top surface of the coolant tank and connected to the coolant tank, a connecting housing fixedly disposed on the top surface of the coolant tank, and a connecting component disposed outside the connecting housing for connecting the coolant tank and the inside of the rolls of the rolling devices.
[0007] Furthermore, the rolling device includes a rolling base, rolling frames mounted on both sides of the rolling base, two rolls located between the two rolling frames and parallel to each other mounted on the rolling frames, forming slots respectively opened on the roll surfaces of the two rolls for forming the bar forming cavity, and a drive motor mounted on the rolling frames for driving the rolls to rotate. The rolls have a cooling space inside, and the end of the roll away from the drive motor rotatably passes through the rolling frame. The end face of the roll away from the drive motor has a connection port communicating with the cooling space. The connecting assembly includes a connecting sleeve, a connecting protective tube, and a water guide pipe. The connecting sleeve is fixedly installed on the outside of the connecting housing and communicates with the internal space of the connecting housing. The end of the connecting protective tube can rotatably pass through the connecting sleeve and extend into the inside of the connecting housing. The other end is fixedly connected to the end face of the roller away from the drive motor and covers the connecting port. The water guide pipe is rotatably inserted into the inside of the connecting protective tube and its two ends extend into the cooling space and the connecting housing, respectively. The end of the water guide pipe that extends into the connecting housing is fixedly connected to the output end of the water pump. The two ends of the return water pipe extend into the cooling space and the connecting housing, respectively. The end of the return water pipe that extends into the connecting housing extends into the coolant tank.
[0008] By adopting the above technical solution, when workers want to cool down the bar stock and rolls, they only need to start the water pump. The water pump draws out the coolant from the coolant tank, and the coolant flows into the cooling space inside the roll through the water pipe. The coolant flows inside the roll and comes into full contact with the inner wall of the roll. After absorbing the heat of the roll, the temperature rises, which cools the entire roll. The heated coolant flows back to the coolant tank through the return water pipe. The coolant in the coolant tank can be drawn out again by the water pump, forming a closed loop. At the same time, the roll is in direct contact with the bar stock during the rolling process, and its surface temperature directly affects the heat of the bar stock. By cooling the rolls with coolant, the surface temperature of the rolls is significantly reduced. When in contact with the bar stock, the heat from the bar stock is transferred to the inside of the rolls through heat conduction, and then carried away by the coolant. This achieves the goal of cooling the rolls while simultaneously cooling the bar stock, preventing hot-slip defects and extending the service life of the rolls. Furthermore, because the contact area between the rolls and the bar stock is large and uniform, the heat transfer is more stable, which can also prevent deformation or uneven performance of the bar stock due to localized overheating.
[0009] Furthermore, the end of the connecting tube near the roll is provided with a sealing structure for sealing the connecting tube.
[0010] Furthermore, the sealing structure includes an annular connecting groove formed on the inner wall of the connecting pipe, an annular sealing plate rotatably inserted into the annular connecting groove, and two openings formed on the surface of the annular sealing plate and penetrating the annular sealing plate, wherein the water guide pipe and the return water pipe pass through the annular sealing plate through the openings.
[0011] While the above technical solution prevents the guide pipe and return pipe from tangling during roll rotation and maintains stable coolant flow, the connecting protective tube, which accommodates both the guide pipe and return pipe, directly connects to the cooling space inside the roll. This can cause coolant inside the roll to flow directly into the gap between the guide pipe / return pipe and the connecting protective tube, leading to coolant accumulation. The accumulated coolant, under centrifugal force during roll rotation, can periodically compress the guide pipe / return pipe, reducing their effective flow area and lowering cooling efficiency. The sealing structure solves this problem. With an annular sealing plate located near the roll, its annular structure forms a physical barrier, forcing coolant to flow only through the guide pipe and return pipe, preventing direct flow into the protective tube and thus preventing coolant accumulation.
[0012] Furthermore, each of the multiple rolling devices is provided with an auxiliary cooling structure on the side away from the guiding mechanism to reduce the temperature of the bar.
[0013] Furthermore, the auxiliary cooling structure includes a cooling plate assembly fixedly mounted on two rolling frames at both ends, a cooling port vertically extending through the cooling plate assembly, a mating interface and a return port located at the upper and lower ends of the cooling plate assembly near the connecting housing, a cooling pipe fixedly connected to the cooling plate assembly at one end and covering the mating interface, and extending into the connecting housing at the other end and fixedly connected to the output end of the water pump, and a return pipe fixedly connected to the cooling plate assembly at one end and covering the return port, and extending into the coolant tank through the connecting housing at the other end. The cooling port is directly opposite the bar forming mold cavity formed by the two forming slots, and the cooling plate assembly has a cooling space inside.
[0014] By adopting the above technical solution, although the connecting components allow the cooling mechanism to cool the bar and the rolls simultaneously, the rolls need to compress the bar, thus requiring a certain strength. This means that although there is a cooling space inside the rolls, the roll wall thickness cannot be too thin, resulting in limited cooling effect on the bar. The auxiliary cooling structure solves this technical problem. With the auxiliary cooling structure, after the bar passes through the rolls, it passes through the cooling port and cooling plate assembly. At this time, the inner wall of the cooling port adheres to the bar, and simultaneously... A water pump pumps coolant into the cooling space inside the cooling plate assembly through cooling pipes. The coolant flows inside the cooling plate assembly, contacting the inner wall of the assembly and cooling it. The heated coolant then flows back to the coolant tank through a return pipe. The coolant in the tank can be pumped out again by the water pump, forming a closed-loop circulation. This allows the cooling plate assembly to cool the bar stock. Because the cooling plate assembly does not need to compress the bar stock, its wall thickness can be set to be thinner, thus maximizing the cooling effect and further improving the cooling efficiency of the cooling mechanism.
[0015] Furthermore, the cooling plate assembly includes a connecting plate assembly and a fixing plate assembly. The connecting plate assembly includes a positioning plate fixedly disposed on the side of one of the rolling frames facing away from the other rolling frame, a cooling plate fixedly disposed on one side of the positioning plate, and an arc-shaped opening through the cooling plate. The cooling plate has a cooling space inside. The fixing plate assembly has the same structure as the connecting plate assembly, but the fixing plate assembly is disposed on another rolling frame. The arc-shaped opening on the fixing plate assembly is used to form a cooling port with the arc-shaped opening of the connecting plate assembly. The cooling plate of the connecting plate assembly has the connecting interface and the return port on one side. A connecting structure is provided between the connecting plate assembly and the fixing plate assembly to connect them. The positioning plate in the connecting plate assembly has a fixing structure for fixing the connecting plate assembly. The positioning plate in the fixing plate assembly has a fixing structure for fixing the fixing plate assembly. The connecting structure can adjust the distance between the connecting plate assembly and the fixing assembly. The fixing structure can be adaptively adjusted with the adjustment of the connecting structure.
[0016] Furthermore, the connecting structure includes threaded channels formed on opposite sides of the cooling plates in the connecting plate assembly and the fixed plate assembly, connecting their respective cooling spaces; return channels formed on opposite sides of the cooling plates in the connecting plate assembly and the fixed plate assembly, connecting their respective cooling spaces; and two threaded hollow tubes, one of which is threadedly connected to the connecting plate assembly and the fixed plate assembly via the threaded channel, and the other threaded hollow tube is threadedly connected to the connecting plate assembly and the fixed plate assembly via the return channel. The threaded channels on the connecting plate assembly and the fixed plate assembly are arranged with opposite thread directions, and the return channels on the connecting plate assembly and the fixed plate assembly are arranged with opposite thread directions.
[0017] While the auxiliary cooling structure improves the cooling efficiency of the cooling mechanism, different batches of processed bars require different sizes. The rolling mill can be adjusted via the roll adjustment mechanism, but the cooling plate assembly cannot. This means the cooling plate assembly becomes unusable after bar replacement. The connecting structure and the connection and fixing plate assemblies solve this problem. By using these structures, when workers replace different batches of bars, they can disassemble the connecting and fixing plate assemblies according to the processed bar dimensions. Then, by rotating the two threaded hollow tubes clockwise or counterclockwise, the two tubes pass through the opposing threaded channels and return channels on the connecting and fixing plate assemblies, causing them to move closer or further apart, widening or narrowing the gap between the cooling ports until they match the processed bar dimensions. Finally, the connecting and fixing plate assemblies are reinstalled on the rolling mill. This allows the cooling plate assembly to adapt to bars of different sizes, improving its practicality and applicability.
[0018] Furthermore, the fixing structure includes a positioning screw hole formed on the positioning plate and passing through the positioning plate, and a positioning bolt threaded through the positioning screw hole and threaded to the rolling frame.
[0019] By adopting the above technical solution and setting up a fixed structure, staff can easily disassemble or fix the cooling plate assembly by simply turning the positioning bolts, making it more convenient for staff to disassemble and assemble the cooling plate assembly.
[0020] Furthermore, the surface of the roll is coated with a wear-resistant material.
[0021] The above technical solutions are used to improve the service life of the rolling mill rolls.
[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up the connecting components, the cooling mechanism can directly circulate coolant inside the roll, directly reducing the roll temperature. At the same time, the cooled roll and the bar are used to indirectly cool the bar. This achieves the purpose of cooling the roll while cooling the bar, preventing hot slip defects and improving the service life of the roll. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of the embodiment; Figure 2 yes Figure 1 Enlarged view of section A in the middle; Figure 3 It is along Figure 1Sectional view of line AA in the middle; Figure 4 This is another view of the overall structure of the embodiment; Figure 5 yes Figure 4 Enlarged view of section B in the middle; Figure 6 It is along Figure 5 A cross-sectional view along the BB line.
[0024] Reference numerals: 1. Machine tool; 10. Guiding mechanism; 11. Roll adjustment mechanism; 2. Cooling mechanism; 20. Coolant tank; 21. Connecting housing; 3. Rolling device; 30. Rolling base; 31. Rolling frame; 32. Roll; 33. Forming groove; 34. Drive motor; 4. Connecting assembly; 40. Connecting sleeve; 41. Connecting protective tube; 42. Water guide pipe; 43. Water return pipe; 5. Sealing structure; 50. Annular connecting groove; 51. Annular sealing piece; 6. Auxiliary cooling structure; 60. Cooling plate assembly; 600. Connecting plate assembly; 601. Fixing plate assembly; 6000. Positioning plate; 6001. Cooling plate; 6002. Arc-shaped opening; 61. Cooling pipe; 62. Return pipe; 7. Connecting structure; 70. Threaded channel; 71. Return channel; 72. Threaded hollow tube; 8. Positioning bolt. Detailed Implementation
[0025] The present application will be further described in detail below with reference to the accompanying drawings.
[0026] Reference Figure 1 , Figure 2 , Figure 3A continuous cold rolling mill for beryllium copper production includes a machine tool 1, a guiding mechanism 10 mounted on one side of the surface of the machine tool 1 for guiding the bar stock, a roll mechanism mounted on the surface of the machine tool 1 on one side of the guiding mechanism 10, a roll adjusting mechanism 11 mounted on the roll mechanism, and a cooling mechanism 2 disposed at the rear of the machine tool 1 for cooling the roll mechanism. The roll mechanism consists of multiple rolling devices 3 arranged sequentially on the machine tool 1. The cooling mechanism 2 includes a coolant tank 20 and multiple cooling devices disposed on the top surface of the coolant tank 20. The cooling water tank 20 is connected to a water pump (not shown in the figure), a connecting housing 21 fixedly installed on the top surface of the cooling water tank 20, and a connecting assembly 4 installed outside the connecting housing 21 for connecting the rolling mechanism. The rolling device 3 includes a rolling base 30, rolling frames 31 installed on both sides of the rolling base 30, two rolling rolls 32 located between the two rolling frames 31 and parallel to each other installed on the rolling frames 31, forming slots 33 respectively opened on the roll surfaces of the two rolling rolls 32 for forming the bar forming die cavity, and a connecting assembly 4 installed on the rolls. A drive motor 34 on the rolling mill stand 31 drives the rotation of the roll 32. The roll 32 has a cooling space inside. The end of the roll 32 away from the drive motor 34 rotatably passes through the rolling mill stand 31. The end face of the roll 32 away from the drive motor 34 has a connection port that connects to the cooling space. The connecting assembly 4 includes a connecting sleeve 40, a connecting protective tube 41, a water guide pipe 42, and a return water pipe 43. The connecting sleeve 40 is fixedly installed on the outside of the connecting housing 21 and connects to the internal space of the connecting housing 21. The end of the connecting protective tube 41 rotatably passes through the rolling mill stand 31. The water pipe extends through the connecting sleeve 40 and into the connecting housing 21. The other end is fixedly connected to the end face of the roller 32 away from the drive motor 34 and covers the connection port. The water pipe 42 is rotatably inserted into the connecting protective tube 41 and its two ends extend into the cooling space and the connecting housing 21, respectively. One end of the water pipe 42 extending into the connecting housing 21 is fixedly connected to the output end of the water pump. The two ends of the return water pipe 43 extend into the cooling space and the connecting housing 21, respectively. One end of the return water pipe 43 extending into the connecting housing 21 extends into the coolant tank 20.
[0027] The guide mechanism 10, roll adjustment mechanism 11, water pump, and drive motor 34 are all existing technologies and will not be described in detail here. The connecting sleeve 40 can be installed on the outside of the connecting housing 21 by threaded connection, welding, bonding, or magnetic attraction. The connecting protective tube 41 can be installed on the roll 32 by flange connection, threaded connection, or welding.
[0028] When workers want to cool down the bar stock and roll 32, they only need to start the water pump. The water pump draws out the coolant from the coolant tank 20. The coolant flows into the cooling space inside the roll 32 through the water guide pipe 42. The coolant flows inside the roll 32 and comes into full contact with the inner wall of the roll 32. After absorbing the heat of the roll 32, the temperature rises, which cools the entire roll 32. The heated coolant flows back to the coolant tank 20 through the return water pipe 43. The coolant in the coolant tank 20 can be drawn out again by the water pump, forming a closed loop. At the same time, the roll 32 is in direct contact with the bar stock during the rolling process, and its surface temperature directly affects the heat of the bar stock. By cooling the roll 32 with coolant, the surface temperature of the roll 32 is significantly reduced. When in contact with the bar, the heat of the bar is transferred to the inside of the roll 32 through heat conduction, and then carried away by the coolant. This achieves the purpose of cooling the roll 32 while cooling the bar, preventing hot slip defects and extending the service life of the roll 32. Furthermore, by cooling the roll 32 with coolant, the heat transfer is more stable because the contact area between the roll 32 and the bar is large and uniform. This also prevents the bar from deforming or exhibiting uneven performance due to local overheating.
[0029] The connecting sleeve 41 serves as the outer sheath for the water guide pipe 42 and the return water pipe 43. When the connecting sleeve 41 rotates, the water guide pipe 42 and the return water pipe 43 remain fixed and do not rotate. In other words, only the connecting sleeve 41 rotates with the roll 32. The connecting sleeve 41 is mainly used to ensure that the water guide pipe 42 and the return water pipe 43 do not entangle with each other when the roll 32 rotates, thus maintaining a stable flow of coolant. Furthermore, the connection component 4 ensures that the coolant output by the cooling device will eventually flow back into the coolant tank 20. Throughout the entire cooling process, the coolant will not be exposed to the air, thus preventing coolant from accumulating on the machine tool 1 and greatly improving the cleanliness of the working environment for the staff.
[0030] In this embodiment, by connecting the protective pipe 41 with the water guide pipe 42 and the return pipe 62, the coolant will not leak into the surrounding environment and air during the entire cooling process, ensuring the cleanliness of the working environment. Furthermore, the return pipe 62 ensures that the coolant will flow back into the coolant tank 20. The operator only needs to continuously cool the coolant tank 20 to ensure that the coolant can continuously cool the roll 32 without wasting additional coolant, thus saving on coolant costs. The coolant inside the roll 32 will fully contact the inner wall of the roll 32 as the roll 32 rotates, improving heat exchange efficiency.
[0031] Although the connecting tube 41 prevents the water guide pipe 42 and the return water pipe 43 from tangling when the roll 32 rotates, maintaining a stable flow of coolant, the connecting tube 41 needs to accommodate the water guide pipe 42 and the return water pipe 43. Since the connecting tube 41 is directly connected to the cooling space inside the roll 32, the coolant inside the roll 32 may flow directly into the gap between the water guide pipe 42 and the return water pipe 43 and the connecting tube 41. This causes coolant to accumulate inside the connecting tube 41. When the roll 32 rotates, the accumulated coolant in the connecting tube 41 is subjected to centrifugal force, which may periodically squeeze the water guide pipe 42 and the return water pipe 43, reducing their effective flow area and thus lowering the cooling efficiency. To solve this technical problem, refer to... Figure 3 In this embodiment, a sealing structure 5 for sealing the connecting protective tube 41 is provided at one end of the connecting protective tube 41 near the roller 32. The sealing structure 5 includes an annular connecting groove 50 opened on the inner wall of the connecting protective tube 41, an annular sealing piece 51 rotatably inserted into the annular connecting groove 50, and two through openings opened on the surface of the annular sealing piece 51 and penetrating the annular sealing piece 51. The annular connecting groove 50 is a groove that surrounds the inner wall of the connecting protective tube 41. The water guide pipe 42 and the return water pipe 43 pass through the through openings and the annular sealing piece 51.
[0032] With the setting of the sealing structure 5, the annular sealing piece 51 is located at the end of the connecting tube 41 near the roll 32. Its annular structure forms a physical barrier, forcing the coolant to flow only through the water guide pipe 42 and the return water pipe 43, and preventing it from flowing directly into the interior of the connecting tube 41, thereby preventing the coolant from accumulating in the connecting tube 41. In other embodiments, an annular sealing plate 51 with an opening can be used directly without the aforementioned annular connecting groove 50. The edge of the annular sealing plate 51 directly abuts and rubs against the inner wall of the connecting protective tube 41. Although this can also achieve the effect of blocking coolant, because the annular sealing plate 51 directly abuts against the inner wall of the connecting protective tube 41, the connecting protective tube 41 will rub against the edge of the annular sealing plate 51 when it rotates with the roller 32, resulting in a gap between the edge of the annular sealing plate 51 and the edge of the connecting protective tube 41, thus reducing the service life of the annular sealing plate 51. In this embodiment, with the setting of the annular connecting groove 50, when the annular sealing plate 51 is damaged by friction, because the annular sealing plate 51 is inserted into the annular connecting groove 50, the worn annular sealing plate 51 can still continue to seal the connecting protective tube 41 and prevent coolant from entering by forming a concave-convex fit with the annular connecting groove 50. Compared with the embodiment that only sets the annular sealing plate 51, the sealing structure 5 in this embodiment has a longer service life.
[0033] Although the connecting component 4 is configured to allow the cooling mechanism 2 to cool both the bar and the roll 32, the roll 32 needs to compress the bar, thus requiring a certain strength. This means that while the roll 32 has a cooling space inside, its wall thickness cannot be too thin, resulting in limited cooling effect on the bar. To solve this technical problem, [further details are needed]. Figure 4 , Figure 5 as well as Figure 6 In this embodiment, auxiliary cooling structures 6 for reducing the temperature of the bar stock are provided on the side of the multiple rolling devices 3 away from the guide mechanism 10. The auxiliary cooling structure 6 includes a cooling plate assembly 60, a cooling pipe 61, and a return pipe 62. The cooling plate assembly 60 is fixedly mounted on two rolling frames 31 at both ends. A cooling port is provided on the cooling plate assembly 60. The upper and lower ends of the cooling plate assembly 60 near the connecting housing 21 are respectively provided with a connection port and a return port. One end of the cooling pipe 61 is fixedly connected to the cooling plate assembly 60 to cover the connection port, and the other end extends into the connecting housing 21 and is fixedly connected to the output end of the water pump. One end of the return pipe 62 is fixedly connected to the cooling plate assembly 60 to cover the return port, and the other end extends into the connecting housing 21 and connects to the coolant tank. The cooling port is directly opposite the bar stock forming mold cavity formed by the two forming slots 33, and the cooling plate assembly 60 has a cooling space inside.
[0034] With the auxiliary cooling structure 6, after the bar is processed by the roll 32, it passes through the cooling port into the cooling plate assembly 60. At this time, the inner wall of the cooling port is attached to the bar. At the same time, the water pump pumps the coolant into the cooling space inside the cooling plate assembly 60 through the cooling pipe 61. The coolant flows inside the cooling plate assembly 60 and contacts the inner wall of the cooling plate assembly 60, thereby cooling the cooling plate assembly 60. The heated coolant flows back to the coolant tank 20 through the return pipe 62. The coolant in the coolant tank 20 can be pumped out again by the water pump to form a closed loop circulation, so that the cooling plate assembly 60 cools the bar. Since the cooling plate assembly 60 does not need to squeeze the bar, the wall thickness of the cooling plate assembly 60 can be set to be thinner, so that the cooling plate assembly 60 can cool the bar to the maximum extent, further improving the cooling efficiency of the cooling mechanism 2.
[0035] Although the auxiliary cooling structure 6 further improves the cooling efficiency of the cooling mechanism 2, the required dimensions of different bars processed in different batches are different. The rolling device 3 can be adjusted by the rolling adjustment mechanism 11, but the cooling plate group 60 cannot be adjusted. This means that the cooling plate group 60 cannot be used after the bar is replaced. To solve this technical problem, in this embodiment, the cooling plate group 60 is configured to include a connecting plate group 600 and a fixing plate group 601, and a connection is provided between the connecting plate group 600 and the fixing plate group 601. A connecting structure 7 is provided. The connecting plate assembly 600 includes a positioning plate 6000 fixedly disposed on the side of one of the rolling frames 31 away from the other rolling frame 31, a cooling plate 6001 fixedly disposed on one side of the positioning plate 6001, and an arc-shaped opening 6002 through the cooling plate 6001. The cooling plate 6001 has a cooling space inside. The structure of the fixing plate assembly 601 is the same as that of the connecting plate assembly 600, but the fixing plate assembly 601 is disposed on the other rolling frame 31, that is, the rolling frame 31 away from the connecting housing 21. The arc-shaped opening 6002 on the fixed plate assembly 601 is used to form a cooling port with the arc-shaped opening 6002 of the connecting plate assembly 600 structure. The cooling plate 6001 of the connecting plate assembly 600 has a connection port and a return port on one side. The connecting structure 7 is used to connect the connecting plate assembly 600 and the fixed plate assembly 601. The positioning plate 6000 in the connecting plate assembly 600 has a fixing structure for fixing the connecting plate assembly 600. The positioning plate 6000 in the fixed plate assembly 601 has a fixing structure for fixing the fixed plate assembly 601. The connecting structure 7 includes a cooling plate 6002 formed in the connecting plate assembly 600. The connecting plate assembly 6001 and the fixed plate assembly 601 have a threaded channel 70 on their opposite sides and which communicates with the cooling space; a return channel 71 on the opposite sides of the connecting plate assembly 6001 and the fixed plate assembly 601 and which communicates with the cooling space; and two threaded hollow tubes 72. One threaded hollow tube 72 is threadedly connected to the connecting plate assembly 600 and the fixed plate assembly 601 through the threaded channel 70, and the other threaded hollow tube 72 is threadedly connected to the connecting plate assembly 600 and the fixed plate assembly 601 through the return channel 71. The thread directions of the threaded channel 70 on the connecting plate assembly 600 and the threaded channel 70 on the fixed plate assembly 601 are opposite, as are the thread directions of the return channel 71 on the connecting plate assembly 600 and the return channel 71 on the fixed plate assembly 601.
[0036] With the connection plate assembly 600, the fixed plate assembly 601, and the connecting structure 7, when workers change to different batches of bar stock, they can disassemble the connection plate assembly 600 and the fixed plate assembly 601 according to the dimensions of the processed bar stock. Then, by rotating the two threaded hollow tubes 72 clockwise or counterclockwise, the two threaded hollow tubes 72 pass through the oppositely arranged threaded channels 70 and return channels 71 on the connection plate assembly 600 and the fixed plate assembly 601, causing the connection plate assembly 600 and the fixed plate assembly 601 to move away from or towards each other, expanding or reducing the distance between the cooling ports until the cooling ports meet the dimensions of the processed bar stock. Then, the connection plate assembly 600 and the fixed plate assembly 601 are installed on the rolling device 3. In this way, the cooling plate assembly 60 can adapt to bar stock of different sizes, improving the practicality and applicability of the cooling plate assembly 60.
[0037] The threaded hollow tube 72 is mainly used to ensure that after the cooling plate group 60 is adjusted, the coolant can still be output to the connecting plate group 600 and the fixed plate group 601 through the interface and return port, so as to ensure that the cooling plate group 60 has an adjustable effect without affecting the cooling effect of the cooling plate group 60.
[0038] In other embodiments, the connecting structure 7 can be directly replaced by a regular unthreaded hollow tube instead of the threaded hollow tube 72. The threaded channel 70 and the return channel 71 are also correspondingly unthreaded channels. Although it is possible to insert the two ends of the regular hollow tube into the unthreaded channels of the connecting plate group 600 and the fixed plate group 601, the coolant may leak from the threaded channel 70 and the return channel 71, causing coolant to accumulate on the machine tool 1 and affecting the working environment. In this embodiment, the threaded hollow tube 72 is threadedly connected to the connecting plate group 600 and the fixed plate group 601. Through the cooperation between the threaded structures, the sealing performance between the threaded hollow tube 72 and the connecting plate group 600 and the fixed plate group 601 can be improved, reducing the possibility of coolant leakage from the threaded channel 70 and the return channel 71.
[0039] In this embodiment, the fixing structure includes a positioning screw hole that is opened on the positioning plate 6000 and passes through the positioning plate 6000, and a positioning bolt 8 that passes through the positioning screw hole and is threaded to the rolling frame 31. With the setting of the fixing structure, the operator only needs to simply turn the positioning bolt 8 to disassemble or fix the cooling plate assembly 60, making it more convenient for the operator to disassemble and assemble the cooling plate assembly 60.
[0040] In other embodiments, a magnetic structure can also be used to fix the cooling plate assembly 60. Although this makes it easier for workers to assemble and disassemble the cooling plate assembly 60, when workers adjust the size of the cooling port of the cooling plate assembly 60, they need to add or remove magnetic blocks according to the adjustment of the cooling plate assembly 60, which is very inconvenient. In this embodiment, with the setting of the positioning bolt 8, even after the workers adjust the size of the cooling port of the cooling plate assembly 60, they only need to simply turn the positioning bolt 8 to disassemble or fix the cooling plate assembly 60.
[0041] In this embodiment, the surface of the roll 32 is coated with a wear-resistant material to improve the wear resistance of the roll 32, thereby increasing the service life of the roll 32. The wear-resistant material can be any one of ceramic coating, metal-ceramic coating, Teflon composite coating or laser cladding coating.
[0042] Specific implementation process: The bar to be processed is guided by the guide mechanism 10 into the forming groove 33 between the two rolls 32 in the rolling device 3. Then, the drive motor 34 drives the two rolls 32 to rotate, so that the two rolls 32 roll the bar. At the same time, all water pumps are started. The water pump connected to the water guide pipe 42 draws out the coolant inside the coolant tank 20. The coolant flows into the cooling space inside the roll 32 through the water guide pipe 42. The coolant flows inside the roll 32 and comes into full contact with the inner wall of the roll 32. After absorbing the heat of the roll 32, the temperature rises, so that the coolant cools the entire roll 32. The heated coolant flows back to the coolant tank 20 through the return water pipe 43. After being cooled, the coolant in the coolant tank 20 can be drawn out again by the water pump, forming a closed loop. At the same time, the roll 32 is in direct contact with the bar during the rolling process, and its surface temperature directly affects the heat of the bar. By cooling the roll 32 with coolant, the surface temperature of the roll 32 is significantly reduced. When in contact with the bar, the heat of the bar is transferred to the inside of the roll 32 through heat conduction, and then carried away by the coolant.
[0043] The water pump connected to the cooling pipe 61 draws out the coolant from the coolant tank 20. The coolant flows through the cooling pipe 61 into the cooling space of the connecting plate assembly 600, and then through the threaded hollow pipe 72 into the cooling space of the fixed plate assembly 601, so that the coolant cools the entire cooling plate assembly 60. The heated coolant flows back to the coolant tank 20 through the return pipe 62. After being cooled, the coolant in the coolant tank 20 can be drawn out again by the water pump, forming a closed loop, so that the cooling plate assembly 60 cools the bar.
[0044] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A continuous cold rolling mill for beryllium copper production, comprising a machine tool, a guiding mechanism mounted on one side of the machine tool surface for guiding bars, a roll mechanism mounted on the machine tool surface on one side of the guiding mechanism, a roll adjusting mechanism mounted on the roll mechanism, and a cooling mechanism disposed at the rear of the machine tool for cooling the roll mechanism, wherein the roll mechanism is composed of a plurality of rolling devices arranged sequentially on the machine tool, characterized in that, The cooling mechanism includes a coolant tank, multiple water pumps disposed on the top surface of the coolant tank and connected to the coolant tank, a connecting housing fixedly disposed on the top surface of the coolant tank, and a connecting component disposed outside the connecting housing for connecting the coolant tank and the inside of the rolls of the rolling device.
2. The continuous cold rolling mill for beryllium copper production according to claim 1, characterized in that, The rolling device includes a rolling base, rolling frames mounted on both sides of the rolling base, two rolls located between the two rolling frames and parallel to each other mounted on the rolling frames, forming slots respectively opened on the roll surfaces of the two rolls for forming the bar forming cavity, and a drive motor mounted on the rolling frames for driving the rolls to rotate. The rolls have internal cooling spaces. The end of the roll away from the drive motor rotatably passes through the rolling frames. The end face of the roll away from the drive motor has a connection port communicating with the cooling space. The connecting assembly includes a connecting sleeve, a connecting protective pipe, a water guide pipe, and a return water system. The connecting sleeve is fixedly installed on the outside of the connecting housing and communicates with the internal space of the connecting housing. One end of the connecting protective tube can rotatably pass through the connecting sleeve and extend into the inside of the connecting housing. The other end is fixedly connected to the end face of the roller away from the drive motor and covers the connecting port. The water guide pipe is rotatably inserted into the connecting protective tube and its two ends extend into the cooling space and the connecting housing, respectively. One end of the water guide pipe extending into the connecting housing is fixedly connected to the output end of the water pump. Both ends of the return water pipe extend into the cooling space and the connecting housing, respectively. One end of the return water pipe extending into the connecting housing extends into the coolant tank.
3. The continuous cold rolling mill for beryllium copper production according to claim 2, characterized in that, The end of the connecting tube near the roll is provided with a sealing structure for sealing the connecting tube.
4. A continuous cold rolling mill for beryllium copper production according to claim 3, characterized in that, The sealing structure includes an annular connecting groove on the inner wall of the connecting pipe, an annular sealing plate that can be rotatably inserted into the annular connecting groove, and two openings on the surface of the annular sealing plate that penetrate the annular sealing plate. The water guide pipe and the return pipe pass through the annular sealing plate through the openings.
5. A continuous cold rolling mill for beryllium copper production according to claim 1, characterized in that, Each of the rolling devices is provided with an auxiliary cooling structure on the side away from the guiding mechanism to reduce the temperature of the bar.
6. A continuous cold rolling mill for beryllium copper production according to claim 5, characterized in that, The auxiliary cooling structure includes a cooling plate assembly fixedly mounted on two rolling frames at both ends, a cooling port vertically extending through the cooling plate assembly, a mating interface and a return port located at the upper and lower ends of the cooling plate assembly near the connecting housing, a cooling pipe fixedly connected to the cooling plate assembly at one end and covering the mating interface, and extending into the connecting housing at the other end and fixedly connected to the output end of the water pump, and a return pipe fixedly connected to the cooling plate assembly at one end and covering the return port, and extending into the coolant tank through the connecting housing at the other end. The cooling port is directly opposite the bar forming mold cavity formed by the two forming slots, and the cooling plate assembly has a cooling space inside.
7. A continuous cold rolling mill for beryllium copper production according to claim 6, characterized in that, The cooling plate assembly includes a connecting plate assembly and a fixing plate assembly. The connecting plate assembly includes a positioning plate fixedly disposed on the side of one of the rolling frames facing away from the other rolling frame, a cooling plate fixedly disposed on one side of the positioning plate, and an arc-shaped opening through the cooling plate. The cooling plate has a cooling space inside. The fixing plate assembly has the same structure as the connecting plate assembly, but the fixing plate assembly is disposed on another rolling frame. The arc-shaped opening on the fixing plate assembly is used to form a cooling port with the arc-shaped opening of the connecting plate assembly. The cooling plate of the connecting plate assembly has the connecting interface and the return port on one side. A connecting structure is provided between the connecting plate assembly and the fixing plate assembly to connect them. The positioning plate in the connecting plate assembly has a fixing structure for fixing the connecting plate assembly. The positioning plate in the fixing assembly has a fixing structure for fixing the fixing plate assembly. The connecting structure can adjust the distance between the connecting plate assembly and the fixing assembly. The fixing structure can be adaptively adjusted with the adjustment of the connecting structure.
8. A continuous cold rolling mill for beryllium copper production according to claim 7, characterized in that, The connecting structure includes threaded channels on opposite sides of the cooling plates in the connecting plate assembly and the fixed plate assembly, connecting their respective cooling spaces; return channels on opposite sides of the cooling plates in the connecting plate assembly and the fixed plate assembly, connecting their respective cooling spaces; and two threaded hollow tubes, one of which is threadedly connected to the connecting plate assembly and the fixed plate assembly via the threaded channel, and the other threaded hollow tube is threadedly connected to the connecting plate assembly and the fixed plate assembly via the return channel. The threaded channels on the connecting plate assembly and the fixed plate assembly have opposite thread directions, as do the return channels on the connecting plate assembly and the fixed plate assembly.
9. A continuous cold rolling mill for beryllium copper production according to claim 7, characterized in that, The fixing structure includes a positioning screw hole that is opened on the positioning plate and passes through the positioning plate, and a positioning bolt that passes through the positioning screw hole and is threaded to the rolling frame.
10. A continuous cold rolling mill for beryllium copper production according to claim 2, characterized in that, The surface of the roll is coated with a wear-resistant material.