Core rod clamping and conveying device for cold pilger mill

Abstract

The utility model belongs to the field of cold rolling equipment, and provides a cold pilger mill core rod clamping and conveying device which comprises a rack, a main clamping and conveying assembly and an auxiliary clamping and conveying assembly. The main clamping and conveying assembly comprises a rotating device fixedly installed on the machine frame and a chuck device which is movably installed on the machine frame and can be close to or away from the rotating device. The auxiliary clamping and conveying assembly comprises clamping wheels and a motor, the clamping wheels are arranged between the rotating device and the chuck device in pairs and can be close to or away from each other, the motor is in transmission connection with the clamping wheels so as to drive the clamping wheels to rotate, and the chuck device is used for driving a target core rod to penetrate through a gap between the clamping wheels; the clamping wheel forms a V-shaped groove which rotates around the center axis of the clamping wheel and is used for clamping the target core rod. The technical problem that in the prior art, the core rod conveying efficiency is low can be solved.

Description

Technical Field

[0001] The present application belongs to the field of cold rolling equipment, and in particular relates to a core rod clamping and conveying device for a cold rolling tube mill. Background Art

[0002] In the production process of cold-rolled tubes, the clamping and transportation of the core rod are key links to ensure product quality and production efficiency.

[0003] After a cold rolling mill completes rolling a single tube, it needs to remove the core rod from the tube before rolling the next tube. Existing cold rolling mills have deficiencies in their core rod conveying design, resulting in low efficiency. Specifically, conventional cold rolling mills typically use a chuck device to clamp and feed the core rod, and then use it to retract the core rod after a single rolling cycle is completed. This chuck device reciprocates, i.e., after clamping the core rod, it moves forward to feed the core rod. After feeding it a certain distance, the chuck releases, and the entire chuck device returns to its starting position. The chuck is then re-clamped and the next clamping and feeding process is performed until a tube is rolled. After a tube is rolled, the chuck device performs the opposite action, i.e., the chuck releases when the chuck device advances, and clamps when it retracts, thereby pulling the core rod back to its starting position to prepare for the rolling of the next tube. Because the chuck device reciprocates to complete the action of retracting the core rod, there is always an idle stroke where no work is performed. This working mode not only leads to low efficiency of core rod transmission, but also increases energy consumption and wear of equipment. Therefore, it is necessary to solve the above technical problems. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a core rod clamping and conveying device for a cold rolling mill to solve the technical problem of low core rod conveying efficiency in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in this application is to provide a cold rolling mill core rod clamping and conveying device, comprising:

[0006] frame;

[0007] A main clamping and conveying assembly includes a rotating device fixedly mounted on the frame and a chuck device movably mounted on the frame and capable of approaching or moving away from the rotating device;

[0008] The auxiliary clamping assembly includes a pair of clamping wheels arranged between the rotating device and the chuck device and capable of approaching or moving away from each other, and a motor that is transmission-connected to the clamping wheels to drive the clamping wheels to rotate. The chuck device is used to drive the target core rod through the gap between the clamping wheels. The clamping wheels form a V-shaped groove around their own rotation center axis and are used to clamp the target core rod.

[0009] Optionally, the auxiliary pinching assembly further comprises a column connected to the frame, a top plate placed transversely on the column, a cylinder connected to the top plate, a swing arm hinged to the top plate, and a connecting rod hinged to one end of the swing arm;

[0010] The output direction of the cylinder is parallel to the moving direction of the chuck device, the rotation center axis of the swing arm relative to the top plate is parallel to the axial direction of the clamping wheel, the end of the connecting rod away from the swing arm is hinged to the output end of the cylinder, and the end of the swing arm away from the connecting rod is connected to the motor so that the clamping wheels can be driven by the cylinder and move closer to or away from each other.

[0011] Optionally, the auxiliary pinching assembly further comprises a rotating disk movably mounted on the swing arm, coaxial with the motor power end and capable of rotating around the motor output shaft;

[0012] The clamping wheel is rotatably mounted on the rotating disk.

[0013] Optionally, the auxiliary pinching assembly further comprises a bearing seat mounted on the swing arm, and the rotating disk is rotatably supported by the bearing seat.

[0014] Optionally, two clamping wheels are provided on the swing arm along the moving direction of the chuck device.

[0015] Optionally, the auxiliary pinching assembly further comprises a driving gear connected to the output end of the motor and a passive gear coaxially connected to the clamping wheel;

[0016] The driving gear and the driven gear form a gear transmission pair.

[0017] Optionally, the auxiliary pinching assembly further comprises a slider connected to the output end of the cylinder, and all ends of the connecting rods away from the swing arm are connected to the slider and driven by the same cylinder.

[0018] Optionally, the auxiliary pinching and conveying assembly further comprises a support plate transversely placed on the column and spaced apart from the top plate, and a linear rail provided on the support plate;

[0019] The extension direction of the linear rail is parallel to the output direction of the cylinder, and the slider is slidably connected to the linear rail.

[0020] The beneficial effect of the cold-rolled tube mill core rod clamping and conveying device provided by the present application is that: compared with the prior art, in addition to being provided with a main clamping assembly, the cold-rolled tube mill core rod clamping and conveying device provided by the present application also has a secondary clamping assembly provided between the rotary device and the chuck device in the main clamping assembly. The clamping wheels arranged in pairs in the secondary clamping assembly can move closer to or farther away from each other and form a stable clamp on the target core rod through the V-shaped grooves arranged thereon. In this way, when the core rod needs to be returned, the two clamping wheels clamped on the target core rod can drive the target core rod to move quickly under the drive of the motor, and return the core rod to its original position at a faster rate. This can significantly improve the conveying efficiency of the cold-rolled tube mill core rod clamping and conveying device for the target core rod in the present application, which is far superior to the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 This is a schematic diagram of the main structure of the cold rolling mill core rod clamping and conveying device in the embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of the top view of the auxiliary pinching and conveying assembly in the embodiment of the present application. Figure 1 ;

[0024] Figure 3 This is a schematic diagram of the top view of the auxiliary pinching and conveying assembly in the embodiment of the present application. Figure 2 ;

[0025] Figure 4 This is a partially enlarged view of the secondary pinching assembly in the embodiment of the present application.

[0026] Among them, the figure marks in the figure are: 100, frame; 201, rotating device; 202, chuck device; 301, clamping wheel; 302, motor; 303, V-shaped groove; 304, column; 305, top plate; 306, cylinder; 307, swing arm; 308, connecting rod; 309, rotating disk; 310, bearing seat; 311, driving gear; 312, driven gear; 313, slider; 314, support plate; 315, linear rail. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0028] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0031] Please also refer to Figures 1 to 3 The present invention provides a cold rolling mill core rod clamping and conveying device according to an embodiment of the present invention. The cold rolling mill core rod clamping and conveying device includes a frame 100, a main clamping and conveying assembly, and a secondary clamping and conveying assembly.

[0032] The primary clamping and conveying assembly includes a rotating device 201 fixedly mounted on the frame 100 and a chuck device 202 movably mounted on the frame 100 and capable of moving toward or away from the rotating device 201. The secondary clamping and conveying assembly includes a pair of clamping wheels 301 arranged between the rotating device 201 and the chuck device 202, capable of moving toward or away from each other, and a motor 302 driven by the clamping wheels 301 to drive the clamping wheels 301 to rotate. The chuck device 202 is used to drive the target core rod through the gap between the clamping wheels 301. The clamping wheels 301 form a V-shaped groove 303 around their own rotational axis for clamping the target core rod. In this embodiment, the chuck device 202 is used to reciprocate relative to the frame 100 to clamp and convey the target core rod to the rotating device 201.

[0033] According to the above structure provided in this embodiment, in addition to the main clamping assembly provided in the cold-rolled tube mill core rod clamping and conveying device provided in this embodiment, a secondary clamping assembly is also provided between the rotating device 201 and the chuck device 202 in the main clamping assembly. The clamping wheels 301 arranged in pairs in the secondary clamping and conveying assembly can move closer to or further away from each other and stably clamp the target core rod through the V-shaped grooves 303 provided thereon. In this way, when the core rod needs to be returned, the two clamping wheels 301 clamped on the target core rod can drive the target core rod to move quickly under the drive action of the motor 302, and return the core rod to its original position at a faster rate. This can significantly improve the conveying efficiency of the cold-rolled tube mill core rod clamping and conveying device for the target core rod in this embodiment, which is far superior to the existing technology.

[0034] In another embodiment of this application, please refer to Figures 1 to 3 The auxiliary clamping and conveying assembly also includes a column 304 connected to the frame 100, a top plate 305 placed horizontally on the column 304, a cylinder 306 connected to the top plate 305, a swing arm 307 hinged on the top plate 305, and a connecting rod 308 hinged at one end of the swing arm 307; the output direction of the cylinder 306 is parallel to the moving direction of the chuck device 202, the rotation center axis of the swing arm 307 relative to the top plate 305 is parallel to the axial direction of the clamping wheel 301, the end of the connecting rod 308 away from the swing arm 307 is hinged to the output end of the cylinder 306, and the end of the swing arm 307 away from the connecting rod 308 is connected to the motor 302 so that the clamping wheels 301 can be driven by the cylinder 306 and move closer to or away from each other.

[0035] According to the above structure provided in this embodiment, when the cylinder 306 is extended and retracted along the moving direction of the chuck device 202, the swing arm 307 can be driven to rotate relative to the top plate 305 through the connecting rod 308, so that the motor 302 connected to the end of the rotating arm away from the connecting rod 308 can swing along with the swing arm 307. The two clamping wheels 301 can move closer to or further away from each other during the swinging of the swing arm 307. Since the cylinder 306 can stably extend and retract, the two clamping wheels 301 arranged in pairs can also move closer to or further away from each other stably and quickly. That is, when the cold rolling mill is rolling, the cylinder 306 retracts to cause the swing arm 307 to drive the clamping wheels 301 to move away from each other and not contact the target core rod. The core rod can be smoothly fed by the chuck device 202 to reduce friction. After a pipe is rolled, the chuck device 202 is reset and the chuck is released. The clamping wheels 301 move closer to each other to clamp the target core rod. Under the action of the motor 302, the target core rod is quickly returned to the starting position, which is beneficial to further improve the feeding efficiency of the core rod clamping and conveying device of the cold rolling mill in this embodiment.

[0036] In another embodiment of this application, please refer to Figures 1 to 3 The secondary clamping assembly further includes a rotating disk 309 movably mounted on the swing arm 307, coaxial with the power end of the motor 302, and capable of rotating around the output shaft of the motor 302; the clamping wheel 301 is rotatably mounted on the rotating disk 309. According to the above structure provided in this embodiment, since the clamping wheel 301 is rotatably mounted on the rotating disk 309 and the rotating disk 309 is capable of rotating around the output shaft of the motor 302, when the clamping wheel 301 abuts against the target core rod, it can act on the rotating disk 309 and cause the rotating disk 309 to rotate. This helps the clamping wheel 301 to adjust to a posture that is more suitable for the target core rod. Figure 3 and Figure 4 Each swing arm 307 is provided with two clamping wheels 301 and both are mounted on the rotating disk 309. In this way, when the two swing arms 307 drive the corresponding clamping wheels 301 to move closer, the clamping wheel 301 on each swing arm 307 will automatically press against the target core rod. In this way, the clamping wheels 301 on the two swing arms 307 can reliably clamp the target core rod and apply a force to move the target core rod along its axial direction to quickly return the target core rod, thereby further improving the feeding efficiency of the target core rod clamping and conveying device of the cold rolling tube mill in this embodiment.

[0037] In another embodiment of this application, please refer to Figures 1 to 3 The secondary clamping and conveying assembly further includes a bearing seat 310 mounted on the swing arm 307. The rotating disk 309 is rotatably supported by the bearing seat 310. In this embodiment, a hollow shaft section is formed on the rotating disk 309 and extends into the bearing seat 310. The hollow shaft section is rotatably connected to the bearing seat 310 via a bearing. The output shaft of the motor 302 movably extends through the shaft section and the rotating disk 309. According to the above structure provided in this embodiment, the rotating disk 309 is connected to the swing arm 307 via the bearing seat 310, allowing it to rotate more smoothly around the output shaft of the motor 302, avoiding mechanical interference between the rotating disk 309 and the output shaft of the motor 302. This further improves the efficiency of feeding the target core rod by the core rod clamping and conveying device of the cold rolling mill in this embodiment.

[0038] In another embodiment of this application, please refer to Figures 1 to 3 Two clamping wheels 301 are provided on the swing arm 307 along the moving direction of the chuck device 202, thus forming two sets of clamping wheels 301 provided along the moving direction of the chuck device 202. According to the above structure provided in this embodiment, the two sets of clamping wheels 301 provided along the moving direction of the chuck device 202 can more stably clamp the target core rod, which is conducive to further improving the feeding efficiency of the core rod clamping and conveying device of the cold rolling mill in this embodiment.

[0039] In another embodiment of this application, please refer to Figures 1 to 3 , the auxiliary clamping and conveying assembly also includes a driving gear 311 connected to the output end of the motor 302 and a passive gear 312 coaxially connected to the clamping wheel 301; the driving gear and the passive gear 312 form a gear transmission pair. According to the above structure provided in this embodiment, the motor 302 can more efficiently drive the clamping wheel 301 to rotate through the gear transmission pair composed of the driving gear 311 and the passive gear 312, which is conducive to further improving the feeding efficiency of the cold rolling mill core rod clamping and conveying device for the target core rod in this embodiment. It should be noted that in the embodiment with two sets of clamping wheels 301, the driving gear 311 can be simultaneously engaged with the two passive gears 312 to synchronously drive the two sets of clamping wheels 301 arranged along the moving direction of the chuck device 202, which is conducive to achieving more synchronous rotation between the multiple sets of clamping wheels 301.

[0040] In another embodiment of this application, please refer to Figures 1 to 3 The secondary clamping and conveying assembly further includes a slider 313 connected to the output end of the cylinder 306. All of the connecting rods 308 are connected to the slider 313 at their ends away from the swing arm 307 and are driven by the same cylinder 306. According to the structure provided in this embodiment, by connecting all of the connecting rods 308 to the slider 313, both rotating arms can be driven by the same cylinder 306. This not only allows the clamping wheels 301 to move closer to or farther from each other more stably and reliably, but also helps further improve the efficiency of feeding the target core rod by the cold rolling mill core rod clamping and conveying device in this embodiment.

[0041] In another embodiment of this application, please refer to Figures 1 to 3 The secondary clamping and conveying assembly further includes a support plate 314 disposed transversely on the upright column 304 and spaced apart from the top plate 305, and a linear rail 315 disposed on the support plate 314. The linear rail 315 extends parallel to the output direction of the cylinder 306, and the slider 313 is slidably connected to the linear rail 315. According to the above structure provided in this embodiment, the linear rail 315 slidably connected to the slider 313 enables the slider 313 to move more stably, which further improves the efficiency of feeding the target core rod by the core rod clamping and conveying device of the cold rolling mill in this embodiment.

[0042] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A cold rolling mill core rod clamping and conveying device, characterized in that: include: rack(100); A main clamping and conveying assembly comprises a rotating device (201) fixedly mounted on the frame (100) and a chuck device (202) movably mounted on the frame (100) and capable of moving closer to or farther from the rotating device (201); The auxiliary clamping assembly comprises a pair of clamping wheels (301) arranged between the rotating device (201) and the chuck device (202) and capable of moving closer to or farther from each other, and a motor (302) connected to the clamping wheels (301) to drive the clamping wheels (301) to rotate, the chuck device (202) being used to drive the target core rod to pass through the gap between the clamping wheels (301), and the clamping wheels (301) forming a V-shaped groove (303) around their own rotational center axis and used to clamp the target core rod.

2. The cold rolling mill core rod clamping and conveying device according to claim 1, characterized in that: The auxiliary clamping and conveying assembly further includes a column (304) connected to the frame (100), a top plate (305) placed horizontally on the column (304), a cylinder (306) connected to the top plate (305), a swing arm (307) hinged to the top plate (305), and a connecting rod (308) hinged to one end of the swing arm (307); The output direction of the cylinder (306) is parallel to the moving direction of the chuck device (202), the rotation center axis of the swing arm (307) relative to the top plate (305) is parallel to the axial direction of the clamping wheel (301), the end of the connecting rod (308) away from the swing arm (307) is hinged to the output end of the cylinder (306), and the end of the swing arm (307) away from the connecting rod (308) is connected to the motor (302) so that the clamping wheels (301) can be driven by the cylinder (306) and move closer to or farther away from each other.

3. The cold rolling mill core rod clamping and conveying device according to claim 2, characterized in that: The auxiliary pinching assembly further includes a rotating disk (309) movably mounted on the swing arm (307), coaxial with the power end of the motor (302), and capable of rotating around the output shaft of the motor (302); The clamping wheel (301) is rotatably mounted on the rotating disk (309).

4. The cold rolling mill core rod clamping and conveying device according to claim 3, characterized in that: The auxiliary pinching assembly further comprises a bearing seat (310) mounted on the swing arm (307), and the rotating disk (309) is slewingly supported by the bearing seat (310).

5. The cold rolling mill core rod clamping and conveying device according to claim 3, characterized in that: Two clamping wheels (301) are provided on the swing arm (307) along the moving direction of the chuck device (202).

6. The cold rolling mill core rod clamping and conveying device according to claim 5, characterized in that: The auxiliary clamping assembly further includes a driving gear (311) connected to the output end of the motor (302) and a driven gear (312) coaxially connected to the clamping wheel (301); The driving gear and the driven gear (312) form a gear transmission pair.

7. The cold rolling mill core rod clamping and conveying device according to claim 2, characterized in that: The auxiliary clamping assembly further comprises a slider (313) connected to the output end of the cylinder (306), and one end of all the connecting rods (308) away from the swing arm (307) is connected to the slider (313) and driven by the same cylinder (306).

8. The cold rolling mill core rod clamping and conveying device according to claim 7, characterized in that: The auxiliary pinching assembly further includes a support plate (314) disposed transversely on the column (304) and spaced apart from the top plate (305), and a linear rail (315) disposed on the support plate (314); The extension direction of the linear rail (315) is parallel to the output direction of the cylinder (306), and the slider (313) is slidably connected to the linear rail (315).

Images