Duplex cold rolling device
By setting a combination of sliding blocks, gears, racks and rotating parts in the cold rolling device, flexible adjustment of the single cold rolling length of the head is achieved, solving the processing adaptability problem of pipe originals with different wall thicknesses, and improving processing efficiency and stability.
Patent Information
- Application Number
- CN202422638544.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-10-30
AI Technical Summary
When existing cold rolling equipment is used to process pipe components with different wall thicknesses, it is difficult to adjust the length of a single cold rolling, resulting in problems such as over-processing or low processing efficiency.
By setting a sliding block, gear, rack and rotating parts in the slide groove, the position of the sliding block is adjusted by utilizing the engagement of the gear and rack. Combined with the fixation of the crank handle and the lock pin, the flexible adjustment of the single cold rolling length of the machine head is ensured, and the reciprocating swing of the swing arm is driven by the motor to provide stable power.
It realizes the flexible processing of pipe components with different wall thicknesses, improves the versatility and processing efficiency of the device, and ensures the quality of the finished product and processing stability.
Smart Images
Figure CN223367823U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of metal rolling, and in particular to a duplex cold rolling device. Background Art
[0002] The cold rolling mill is a process equipment that uses an annular hole to cold-roll raw pipes. The cold rolling mill has good cogging performance and can also roll non-ferrous metal seamless pipes of ordinary precision. The most significant feature of the cold rolling mill is its high material utilization rate, and its precision and surface roughness are better than those of cold-drawn pipes.
[0003] The cold rolling devices in the related art mostly include a frame, a slide rail is fixedly provided on the frame, a swing arm is rotatably provided on the frame, a transmission rocker is provided between the sliding block and the machine head, one end of the transmission rocker is rotatably connected to the machine head, and the other end is rotatably connected to the sliding block. The frame is also provided with a swing assembly for driving the swing arm to swing back and forth; a machine head is provided on the slide rail, and the machine head includes a rolling roller and a cylinder. The cylinder is slidably arranged on the slide rail, and a number of rolling rollers are symmetrically and rotatably arranged in the cylinder, and a rolling groove is provided on the rolling roller; when the pipe original is cold-rolled, a mandrel is inserted into the pipe original, and the pipe original with the mandrel is stuffed into the machine head, and the pipe original is continuously pushed forward by the pushing device, and the swing arm is driven to swing back and forth by the swing assembly. The swing arm pulls the cylinder to slide back and forth on the slide rail through the transmission rocker, and the rolling groove on the roller repeatedly performs cold rolling on the pipe original, thereby changing the shape and size of the pipe to form a finished pipe that meets the requirements.
[0004] However, the reciprocating sliding length of the machine head in a common cold rolling device is generally a fixed value. Therefore, when the machine head performs a reciprocating motion, the single cold rolling length of the pipe original by the machine head is constant. However, due to the different wall thicknesses of pipe originals in different batches, for thinner pipe originals, a longer single cold rolling length may lead to over-processing, and for thicker pipe originals, a shorter single cold rolling length may lead to low processing efficiency. Utility Model Content
[0005] In order to be able to adjust the single cold rolling length of the machine head on the pipe original to adapt to the processing requirements of pipe originals with different wall thicknesses, the present application provides a double cold rolling device.
[0006] The present application provides a double cold rolling device adopting the following technical solution:
[0007] A double cold rolling device comprises a frame, a slide rail is fixedly provided on the frame, a machine head is slidably provided on the slide rail, a swing arm is rotatably provided on the frame, and a swing assembly for driving the swing arm to swing back and forth is also provided on the frame, a slide groove is provided on the swing arm, a sliding block is slidably provided in the slide groove, a first transmission rocker is provided between the sliding block and the machine head, one end of the first transmission rocker is rotatably connected to the machine head, and the other end of the first transmission rocker is rotatably connected to the sliding block, a gear is rotatably provided on the sliding block, a rack is fixedly provided on the swing arm, the gear and the rack are meshed with each other, a rotating part is provided on the gear, and the rotating part is used to drive the gear to rotate.
[0008] By adopting the above technical solution, when processing pipe originals with different wall thicknesses, the operator can drive the gear to rotate through the rotating part. Since the gear and the rack are engaged with each other, the gear will drive the sliding block to slide in the slide groove when it rotates, thereby changing the position of the sliding block on the swing arm. The change in the position of the sliding block will cause the swing chord length of the sliding block on the swing arm to change, and then change the reciprocating sliding length of the head on the slide rail, thereby realizing the adjustment of the single cold rolling length of the head, thereby meeting the processing requirements of pipe originals with different wall thicknesses, improving the versatility and processing efficiency of the device, and ensuring the quality of the finished product.
[0009] Preferably, two machine heads are provided on the sliding frame, and the two machine heads are arranged side by side and fixed to each other.
[0010] By adopting the above technical solution, two parallel machine heads are set up to perform cold rolling processing on two pipe originals at the same time, which greatly improves work efficiency and is particularly suitable for the needs of large-scale production.
[0011] Preferably, the rotating part is a crank, and the crank is installed in the center of the gear end face.
[0012] By adopting the above technical solution, the rotating part is set as a crank and installed in the center of the gear end face. The crank has a simple and intuitive structure and is easy to operate, making it easy for the operator to apply force and conveniently drive the gear to rotate.
[0013] Preferably, a hexagonal groove is provided in the center of the gear end face, and a hexagonal column is fixedly provided on the crank, and the hexagonal column can be inserted into the hexagonal groove and abut against the hexagonal groove.
[0014] By adopting the above technical solution, when the crank needs to be used to rotate the gear, the hexagonal column on the crank is inserted into the hexagonal groove, and the crank and the gear are tightly connected in the circumferential direction. This connection method is stable and reliable. When the crank is turned, the crank transmits torque to the gear, driving the gear to rotate stably. At the same time, the cooperation between the hexagonal groove and the hexagonal column facilitates the installation and disassembly of the crank. When operation is not required, the crank can be removed and left to swing with the swing arm, reducing safety hazards.
[0015] Preferably, a plurality of first locking holes are evenly and continuously provided on the end surface of the gear, a second locking hole is provided on the sliding block, a locking pin is inserted into the second locking hole, and the locking pin passes through the first locking hole and abuts against the first locking hole.
[0016] By adopting the above technical solution, when the gear rotates to the desired position, the locking pin is passed through the corresponding first lock hole and inserted into the second lock hole, so that the positions of the first lock hole and the second lock hole are fixed. At this time, the gear and the sliding block are relatively fixed to prevent the gear from rotating accidentally and changing the sliding length of the machine head. The position of the sliding block in the slide groove is locked by the gear to prevent the sliding block from sliding in the slide groove, thereby ensuring the stability and accuracy of the cold rolling device during operation, thereby ensuring the processing quality and precision.
[0017] Preferably, the locking pin is threadedly connected to the second locking hole.
[0018] By adopting the above technical solution, one end of the locking pin is threadedly engaged with the second locking hole, so that the connection of the locking pin is stable, preventing the locking pin from accidentally disengaging from the second locking hole during the swinging of the swing arm, causing a production accident.
[0019] Preferably, the swing assembly includes a crank plate and a second transmission rocker, the crank plate is rotatably arranged on the frame, one end of the second transmission rocker is rotatably engaged with the crank plate at a position deviating from the rotation center, and the other end of the second transmission rocker is rotatably engaged with the top end of the swing arm.
[0020] By adopting the above technical solution, when the curved plate rotates, one end of the second transmission rocker rotates with the curved plate away from the rotation center position, which drives the second transmission rocker to move, and then the other end of the second transmission rocker rotates with the top of the swing arm to drive the swing arm to swing back and forth, thereby providing the swing arm with stable power for reciprocating swinging, thereby realizing the reciprocating sliding of the machine head on the slide rail, ensuring the smooth cold rolling processing of the pipe original.
[0021] Preferably, the swing assembly further comprises a motor, and the motor is used to drive the crankshaft to rotate.
[0022] By adopting the above technical solution, the setting of the motor provides a stable and controllable power source for the rotation of the curved plate. The motor has the characteristics of stable output and adjustable speed. It can accurately control the rotation speed and rotation angle of the curved plate, thereby realizing precise adjustment of the reciprocating swing frequency of the swing arm, which helps to improve the working efficiency and processing accuracy of the cold rolling device and meet different production needs.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. By setting the slide, sliding block, first transmission rocker, gear, rack, rotating part, crank, hexagonal slot and hexagonal column, the single cold rolling length of the die can be adjusted to meet the processing requirements of pipe parts with different wall thicknesses, improve the versatility and processing efficiency of the device, and ensure the quality of the finished product;
[0025] 2. By providing the first lock hole, the second lock hole, and the lock pin, the gear and the sliding block are relatively fixed to prevent the gear from accidentally rotating and changing the sliding length of the machine head. The gear also locks the position of the sliding block in the chute to prevent the sliding block from slipping in the chute, thereby ensuring the stability of the cold rolling device during operation.
[0026] 3. By setting the curved plate, the second transmission rocker and the motor, the swing arm is stably provided with the power for reciprocating swing, thereby realizing the reciprocating sliding of the machine head on the slide rail, ensuring the smooth cold rolling processing of the pipe original. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a structural schematic diagram of a double cold rolling device provided in an embodiment of the present application.
[0028] Figure 2 yes Figure 1 Enlarged view of part A.
[0029] Figure 3 It is a schematic diagram of the cross-sectional structure of the sliding block and the gear in the embodiment of the present application.
[0030] Explanation of the accompanying reference numerals: 1. Frame; 11. Slide rail; 12. Machine head; 2. Swing arm; 21. Slide groove; 22. Slide block; 221. Second locking hole; 231. First transmission rocker; 24. Gear; 241. Hexagonal groove; 242. First locking hole; 25. Rack; 26. Crank; 261. Hexagonal column; 27. Locking pin; 3. Crank; 31. Second transmission rocker; 32. Motor. DETAILED DESCRIPTION
[0031] The following is combined with Figure 1-3 This application is described in further detail.
[0032] The present application embodiment discloses a double cold rolling device. Figure 1 The invention comprises a frame 1 on which a slide rail 11 is fixedly mounted. Two machine heads 12 are slidably mounted on the slide rail 11, and the two machine heads 12 are arranged side by side and fixed to each other. A swing arm 2 is rotatably mounted on the frame 1, and a swing assembly is also provided on the frame 1 for driving the swing arm 2 to swing back and forth.
[0033] Reference Figure 1 and Figure 2 The swing arm 2 is provided with a chute 21, within which a sliding block 22 is slidably mounted. A first transmission rocker 231 is disposed between the sliding block 22 and the machine head 12. One end of the first transmission rocker 231 is rotationally connected to the machine head 12, and the other end is rotationally connected to the sliding block 22. A gear 24 is rotationally mounted to the side of the sliding block 22. A rack 25 is fixedly mounted on the swing arm 2, and the gear 24 and the rack 25 mesh with each other. The gear 24 is provided with a rotating member, which is used to drive the gear 24 to rotate.
[0034] Reference Figure 1 When processing pipe components with varying wall thicknesses, the operator rotates gear 24 via a rotating member. Due to the meshing of gear 24 and rack 25, the rotation of gear 24 causes the slide block 22 to slide within the slide groove 21, thereby changing the position of the slide block 22 on the swing arm 2. This, in turn, changes the swing chord length of the slide block 22 on the swing arm 2, ultimately altering the reciprocating sliding length of the die head 12 on the slide rail 11, thereby adjusting the single cold-rolling length of the die head 12. This system can meet the processing requirements of pipe components with varying wall thicknesses, improve the versatility and processing efficiency of the device, and ensure the quality of the finished product.
[0035] In order to facilitate the driving of the gear 24, refer to Figure 2 and Figure 3 The rotating member is specifically a crank 26. A hexagonal slot 241 is defined in the center of the end face of the gear 24. A hexagonal column 261 is fixedly mounted on the crank 26. The column 261 can be inserted into the hexagonal slot 241 and abutted against it. When the gear 24 needs to be rotated, the column 261 is inserted into the hexagonal slot 241, and the crank 26 drives the gear 24 to rotate. This makes it easy for the operator to apply force and conveniently drive the gear 24 to rotate. When not in use, the crank 26 can be removed to prevent it from swinging with the swing arm 2 and save space.
[0036] In order to lock the position of the sliding block 22 in the sliding groove 21, refer to Figure 2 and Figure 3, a number of first locking holes 242 are evenly and thoroughly opened on the end surface of the gear 24, and a second locking hole 221 is opened on the sliding block 22. A locking pin 27 is inserted into the second locking hole 221, and the locking pin 27 is threadedly engaged with the second locking hole 221. The locking pin 27 passes through the first locking hole 242 and abuts against the first locking hole 242. When the gear 24 is rotated to the desired position, the locking pin 27 is passed through the corresponding first locking hole 242 and inserted into the second locking hole 221, and the locking pin 27 is rotated so that the locking pin 27 is threadedly connected with the second locking hole 221. At this time, the gear 24 and the sliding block 22 are relatively fixed, which helps prevent the gear 24 from rotating accidentally. In addition, the gear 24 and the rack 25 are locked with each other, thereby locking the position of the sliding block 22 in the slide groove 21 to prevent the sliding block 22 from slipping in the slide groove 21.
[0037] In order to drive the swing arm 2 to swing back and forth, refer to Figure 1 The swing assembly includes a cranked disc 3, a second transmission rocker 31, and a motor 32. The cranked disc 3 is rotatably mounted on the frame 1. One end of the second transmission rocker 31 rotates with the cranked disc 3 at a position offset from its center of rotation. The other end of the second transmission rocker 31 rotates with the swing arm 2. The motor 32 is fixed to the frame 1, and its drive shaft is fixedly connected to the cranked disc 3. The motor 32 is used to drive the cranked disc 3 to rotate. When the swing arm 2 needs to swing, the motor 32 is activated, and the motor 32 drives the cranked disc 3 to rotate. The cranked disc 3 drives the second transmission rocker 31 to move, which in turn drives the swing arm 2 to swing back and forth.
[0038] The operating principle of a duplex cold rolling device according to an embodiment of the present application is as follows: Before cold rolling, the operator adjusts the position of the sliding block 22 based on the wall thickness of the pipe component. First, a crank handle 26 is placed on the hexagonal slot 241. Then, cranking the crank handle 26 rotates the gear 24. The gear 24 meshes with the rack 25 and drives the sliding block 22 to slide within the slide slot 21, thereby changing the position of the sliding block 22 on the swing arm 2. Finally, when the gear 24 rotates to the desired position, the locking pin 27 is inserted through the corresponding first locking hole 242 and into the second locking hole 221. The locking pin 27 is then rotated and threadedly engaged with the second locking hole 221. This adjusts the position of the sliding block 22, thereby changing the swing chord length of the sliding block 22 on the swing arm 2, thereby changing the reciprocating sliding length of the die head 12 on the slide rail 11 and adjusting the length of a single cold rolling cycle of the die head 12.
[0039] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A double cold rolling device, comprising a frame (1), a slide rail (11) fixedly provided on the frame (1), a head (12) slidingly provided on the slide rail (11), a swing arm (2) rotatably provided on the frame (1), and a swing assembly for driving the swing arm (2) to swing back and forth provided on the frame (1), characterized in that: A slide groove (21) is provided on the swing arm (2), a slide block (22) is slidably provided in the slide groove (21), a first transmission rocker (231) is provided between the slide block (22) and the machine head (12), one end of the first transmission rocker (231) is rotatably connected to the machine head (12), and the other end of the first transmission rocker (231) is rotatably connected to the slide block (22), a gear (24) is rotatably provided on the slide block (22), a rack (25) is fixedly provided on the swing arm (2), the gear (24) and the rack (25) are meshed with each other, a rotating part is provided on the gear (24), and the rotating part is used to drive the gear (24) to rotate.
2. A double cold rolling device according to claim 1, characterized in that: The machine heads (12) are arranged in two on the sliding frame, and the two machine heads (12) are arranged in parallel and fixed to each other.
3. The double cold rolling device according to claim 1, characterized in that: The rotating part is a crank (26), and the crank (26) is installed at the center of the end surface of the gear (24).
4. A double cold rolling device according to claim 3, characterized in that: A hexagonal groove (241) is provided in the center of the end face of the gear (24), and a hexagonal column (261) is fixedly provided on the crank (26). The hexagonal column (261) can be inserted into the hexagonal groove (241) and abut against the hexagonal groove (241).
5. The double cold rolling device according to claim 1, characterized in that: A plurality of first locking holes (242) are evenly and continuously formed on the end surface of the gear (24), a second locking hole (221) is formed on the sliding block (22), a locking pin (27) is inserted into the second locking hole (221), and the locking pin (27) passes through the first locking hole (242) and abuts against the first locking hole (242).
6. A double cold rolling device according to claim 5, characterized in that: The locking pin (27) is threadedly connected to the second locking hole (221).
7. The double cold rolling device according to claim 1, characterized in that: The swing assembly comprises a crank plate (3) and a second transmission rocker (31); the crank plate (3) is rotatably arranged on the frame (1); one end of the second transmission rocker (31) is rotatably engaged with the crank plate (3) at a position deviated from the rotation center; and the other end of the second transmission rocker (31) is rotatably engaged with the top end of the swing arm (2).
8. The double cold rolling device according to claim 7, characterized in that: The swing assembly further comprises a motor (32), and the motor (32) is used to drive the crank plate (3) to rotate.