Rapid clamping device of cold pilger mill

Abstract

The utility model relates to the technical field of cold pilger mills, and provides a rapid clamping device of a cold pilger mill, which comprises a loading box, one side of the loading box is rotatably connected with a clamping head, a clamping rotating assembly is arranged in the clamping head, the clamping rotating assembly comprises a groove arranged at the outer end of the clamping head, and the clamping head is connected with the clamping head. A clamping jaw is rotationally connected into the groove, a clamping plate is fixedly connected to the outer end of the clamping jaw, and a connecting groove is formed in the top end of the clamping plate. The connecting rod capable of sliding and rotating in the connecting groove in the top end of the clamping plate drives the clamping plate at the bottom end of the connecting rod to be freely adjusted according to the radius of a pipe blank to complete clamping operation, the pipe blank clamping device is suitable for clamping operation of various pipe blanks, clamping operation of the pipe blanks is faster, clamping precision is higher, and clamping efficiency is improved. And meanwhile, the clamping head used for clamping the pipe blank can rotate at the outer end of the loading box, so that the pipe blank can be rotated in the clamping process, the clamping operation and the rotating operation are carried out cooperatively, and the machining efficiency of the pipe blank is improved.

Description

Technical Field

[0001] This utility model relates to the field of cold rolling mill technology, specifically to a quick clamping device for a cold rolling mill. Background Technology

[0002] The main function of a cold rolling mill is to cold roll rough tubes to produce seamless tubes with high precision and excellent physical properties. The cold rolling mill cold rolls the rough tubes through annular die-cutting. Its main components include a mandrel with a certain taper and a pair of die-cuts with gradually changing grooves. While the work stand reciprocates, the rolls rotate, and the tube blank is repeatedly rolled within the gap between the mandrel and the die-cuts, achieving a reduction in the outer diameter and wall thickness of the tube blank. During the processing, a clamping device is used to hold the tube. This clamping device is mainly used to fix, feed, and rotate the tube blank, ensuring its stability during rolling and working with the rolls to achieve precise plastic deformation.

[0003] In existing cold-rolled tube mills, the billet clamping assembly and rotating assembly are separate components. During processing, manual positioning and clamping are required, which is inconvenient and prone to misalignment, affecting the accuracy of billet processing. Furthermore, the clamping device is prone to loosening during billet rotation, impacting the clamping effect. To address these issues, a rapid clamping device for cold-rolled tube mills is proposed. This device utilizes a clamping plate that can be freely adjusted according to the billet's outer diameter, along with a rotating structure connected to the clamping components, to solve the aforementioned problems. Utility Model Content

[0004] This utility model proposes a quick clamping device for a cold rolling mill, which solves the problems of inconvenient billet clamping, slow speed, and loose clamping parts affecting billet processing accuracy and efficiency during billet rotation in related technologies.

[0005] The technical solution of this utility model is as follows:

[0006] A quick clamping device for a cold rolling mill includes a loading box. A clamping head is rotatably connected to one side of the loading box. The clamping head has a clamping rotation assembly inside. The clamping rotation assembly includes a groove at the outer end of the clamping head. A gripper is rotatably connected inside the groove. A clamping plate is fixedly connected to the outer end of the gripper. A connecting groove is formed at the top of the clamping plate. A connecting rod is movably connected inside the connecting groove. A clamping plate is fixedly connected to the bottom end of the connecting rod. A hollow connecting post is fixedly connected to one end of the clamping head. The hollow connecting post is rotatably connected to the loading box. A driven gear is fixedly connected to the outer end of the hollow connecting post. A transmission gear meshes with the outer end of the driven gear. The driven gear and the transmission gear are rotatably connected inside the loading box.

[0007] Optionally, the snap-fit ​​rotating assembly further includes an inner plate fixedly connected to the inside of the snap-fit ​​head, a stop rod fixedly connected to the inner side of the inner plate, a slide plate slidably connected to the outer end of the stop rod, the slide plate slidably connected to the inside of the snap-fit ​​head, and a rotating rod rotatably connected between the gripper and the slide plate.

[0008] Optionally, the outer end of the connecting rod is provided with a sliding groove, and a movable rod is fixedly connected inside the connecting groove. The sliding rod is movably connected to the sliding groove. The locking and rotating assembly also includes a first spring sleeved on the outer end of the connecting rod, and the first spring is fixedly connected between the locking plate and the clamping plate.

[0009] Optionally, the snap-fit ​​rotating assembly further includes an assembly ring fixedly connected inside the loading box, the assembly ring being rotatably connected to the driven gear, a hydraulic cylinder being fixedly connected to the outer end of the loading box, a push rod being fixedly connected to the telescopic part of the hydraulic cylinder, the push rod being slidably connected to the inside of the hollow connecting column, the bottom end of the push rod being fixedly connected to the slide plate, and a first servo motor being fixedly connected to the outer end of the loading box, the output end of the first servo motor being fixedly connected to the transmission gear.

[0010] Optionally, guide rods are symmetrically fixedly connected to both sides of the loading box, and guide rails are slidably connected inside the guide rods. The two ends of the two sets of guide rails are symmetrically fixedly connected to floor panels, and a support rod is snapped between the two sets of floor panels.

[0011] Optionally, a second servo motor is fixedly connected to the outer end of one set of the floor panels, a bidirectional lead screw is rotatably connected between the two sets of floor panels, the output end of the second servo motor is fixedly connected to the bidirectional lead screw, a connecting seat is fixedly connected to the bottom end of the loading box, and the bidirectional lead screw is threadedly connected to the connecting seat.

[0012] Optionally, a first lower clamping ring is fixedly connected to the top of another set of floor panels, a connecting rod is fixedly connected to the inner side of the first lower clamping ring, and a second lower clamping ring is fixedly connected to the outer end of the connecting rod. Both the top of the first lower clamping ring and the second lower clamping ring are provided with upper clamping rings.

[0013] Optionally, side plates are symmetrically fixedly connected to the outer sides of the first lower clamping ring, the second lower clamping ring, and the upper clamping ring, and a support rod is slidably connected between the two side plates, with a second spring fixedly connected between the two ends of the support rod and the side plate.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] In this invention, a connecting rod that can slide and rotate inside the connecting groove at the top of the clamping plate drives the clamping plate at its bottom to freely adjust according to the radius of the tube blank to complete the clamping operation. It is suitable for clamping various tube blanks, and the tube blank clamping operation is fast and has higher clamping accuracy. At the same time, the clamping head used to clamp the tube blank can rotate at the outer end of the loading box, so that the tube blank can be rotated during the clamping process. The clamping operation and the rotation operation are carried out in tandem, which improves the efficiency of tube blank processing. Attached Figure Description

[0016] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure between the card plate and the connecting rod of this utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the driven gear and the transmission gear of this utility model;

[0020] Figure 4 This is a side view of the loading box of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure between the first lower clamping ring, the second lower clamping ring, and the upper clamping ring of this utility model.

[0022] In the diagram: 1. Loading box; 2. Clamping head; 3. Clamping rotating assembly; 301. Gripper; 302. Clamping plate; 303. Connecting groove; 304. Connecting rod; 305. Clamping plate; 306. Hollow connecting column; 307. Driven gear; 308. Transmission gear; 309. Inner plate; 3010. Support rod; 3011. Slide plate; 3012. Rotating rod; 3013. First spring; 3014. Assembly ring; 3015. Hydraulic cylinder; 3016. Top rod; 3017. First servo motor; 4. Guide rod; 5. Guide rail; 6. Floor; 7. Support rod; 8. Second servo motor; 9. Bidirectional lead screw; 10. Connecting seat; 11. First lower clamping ring; 12. Connecting rod; 13. Second lower clamping ring; 14. Upper clamping ring; 15. Side plate; 16. Support rod; 17. Second spring. Detailed Implementation

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0024] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0025] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Example 1

[0028] Reference Figures 1-4This first embodiment of the present invention proposes a quick clamping device for a cold rolling mill, comprising a loading box 1, a clamping head 2 rotatably connected to one side of the loading box 1, a clamping rotating assembly 3 provided inside the clamping head 2, the clamping rotating assembly 3 including a groove opened at the outer end of the clamping head 2, a gripper 301 rotatably connected inside the groove, a clamping plate 302 fixedly connected to the outer end of the gripper 301, a connecting groove 303 opened at the top of the clamping plate 302, a connecting rod 304 movably connected inside the connecting groove 303, a clamping plate 305 fixedly connected to the bottom end of the connecting rod 304, a hollow connecting post 306 fixedly connected to one end of the clamping head 2, the hollow connecting post 306 being rotatably connected to the loading box 1, a driven gear 307 fixedly connected to the outer end of the hollow connecting post 306, a transmission gear 308 meshing with the outer end of the driven gear 307, and the driven gear 307 and the transmission gear 308 being rotatably connected inside the loading box 1. The purpose of this configuration is that, when clamping the tube blank, one end of the tube blank is inserted into the inside of the clamp 2, while the jaw 301 rotates in the groove at the outer end of the clamp 2. At this time, the rotating jaw 301 drives the connecting rod 304 inside the clamping plate 302 to rotate together, so that the clamping plate 305 at the bottom of the connecting rod 304 clamps the tube blank from the outer end. During the clamping process, the connecting rod 304 extends, retracts, and rotates inside the connecting groove 303 according to the radius of the tube blank. The connecting rod 304, which can move inside the connecting groove 303, is suitable for tube blanks of various diameters. When the tube blank is clamped, during the rotation of the tube blank, the transmission gear 308 drives the driven gear 307 at its outer end to rotate, so that the hollow connecting column 306 fixed at its outer end drives the clamp 2 to rotate at the outer end of the loading box 1, thereby enabling the tube blank to complete the rotation operation during the clamping process. The tube blank clamping operation is convenient and fast, and the clamping plate 305 provides higher stability for clamping the tube blank.

[0029] Optionally, the clamping and rotating assembly 3 further includes an inner plate 309 fixedly connected inside the clamping head 2. A stop rod 3010 is fixedly connected to the inner side of the inner plate 309, and a slide plate 3011 is slidably connected to the outer end of the stop rod 3010. The slide plate 3011 is slidably connected inside the clamping head 2, and a rotating rod 3012 is rotatably connected between the clamping jaws 301 and the slide plate 3011. The purpose of this arrangement is that during the clamping of the tube blank, the slide plate 3011 slides between the clamping head 2 and the inner plate 309. At this time, the rotating rod 3012 drives the clamping jaws 301 to rotate in the groove at the outer end of the clamping head 2, thereby causing the clamping jaws 301 to drive the clamping plate 302 to rotate towards the inner side of the clamping head 2, and thus causing the clamping plate 305 to clamp the tube blank from the outer end.

[0030] Optionally, the outer end of the connecting rod 304 is provided with a sliding groove, and a movable rod is fixedly connected inside the connecting groove 303. The sliding rod is movably connected to the sliding groove. The locking and rotating assembly 3 also includes a first spring 3013 sleeved on the outer end of the connecting rod 304. The first spring 3013 is fixedly connected between the clamping plate 302 and the clamping plate 305. The purpose of this arrangement is that the elastic force generated by the first spring 3013 enhances the clamping force of the clamping plate 305 on the outer wall of the tube blank, preventing the tube blank from loosening from the clamping plate 305 during processing.

[0031] Optionally, the clamping and rotating assembly 3 further includes an assembly ring 3014 fixedly connected inside the loading box 1. The assembly ring 3014 is rotatably connected to the driven gear 307. A hydraulic cylinder 3015 is fixedly connected to the outer end of the loading box 1. A push rod 3016 is fixedly connected to the telescopic part of the hydraulic cylinder 3015. The push rod 3016 is slidably connected to the inside of the hollow connecting column 306. The bottom end of the push rod 3016 is fixedly connected to the slide plate 3011. A first servo motor 3017 is fixedly connected to the outer end of the loading box 1. The output end of the first servo motor 3017 is fixedly connected to the transmission gear 308. The purpose of this arrangement is that, during the clamping process of the tube blank, the hydraulic cylinder 3015 drives the push rod 3016 fixed to its telescopic part to extend and retract inside the clamping head 2, thereby causing the slide plate 3011 to slide inside the clamping head 2, which in turn causes the rotating rod 3012 to drive the gripper 301 to rotate, thus completing the clamping operation of the tube blank.

[0032] Example 2

[0033] Reference Figures 1-5 This is the second embodiment of the present invention, which differs from the first embodiment in that:

[0034] Compared to Embodiment 1, the loading box 1 is further provided with guide rods 4 symmetrically fixedly connected to both sides, guide rails 5 slidably connected inside the guide rods 4, and floor plates 6 symmetrically fixedly connected to both ends of the two sets of guide rails 5. A support rod 7 is engaged between the two sets of floor plates 6. The purpose of this arrangement is to facilitate the movement of the loading box 1 between the two sets of guide rails 5, provided that the guide rails 5 between the two sets of floor plates 6 are in a convenient manner.

[0035] Optionally, a second servo motor 8 is fixedly connected to the outer end of one set of floor plates 6, and a bidirectional lead screw 9 is rotatably connected between the two sets of floor plates 6. The output end of the second servo motor 8 is fixedly connected to the bidirectional lead screw 9, and a connecting seat 10 is fixedly connected to the bottom end of the loading box 1. The bidirectional lead screw 9 is threadedly connected to the connecting seat 10. The purpose of this arrangement is that the second servo motor 8 drives the bidirectional lead screw 9 connected to its output end to rotate between the two sets of floor plates 6. Since the connecting seat 10 is threadedly connected to the bidirectional lead screw 9, the loading box 1 reciprocates between the two sets of guide rails 5, thereby completing the billet feeding operation.

[0036] Optionally, a first lower clamping ring 11 is fixedly connected to the top of another set of floor plates 6. A connecting rod 12 is fixedly connected to the inner side of the first lower clamping ring 11, and a second lower clamping ring 13 is fixedly connected to the outer end of the connecting rod 12. Both the first lower clamping ring 11 and the second lower clamping ring 13 have upper clamping rings 14 at their top ends. Side plates 15 are symmetrically fixedly connected to the outer sides of the first lower clamping ring 11, the second lower clamping ring 13, and the upper clamping ring 14. A support rod 16 is slidably connected between the two side plates 15, and a second spring 17 is fixedly connected between the two ends of the support rod 16 and the side plates 15. The purpose of this arrangement is that during the feeding process, as the tube blank moves between the first lower clamping ring 11, the second lower clamping ring 13, and the upper clamping ring 14, the elastic force generated by the second spring 17 enhances the clamping force of the first lower clamping ring 11, the second lower clamping ring 13, and the upper clamping ring 14 on the tube blank, thus positioning the tube blank and preventing it from shifting during feeding, which would affect the accuracy and effect of tube blank processing.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A rapid clamping device for a cold rolling mill, comprising a loading box (1), characterized in that, A clamping head (2) is rotatably connected to one side of the loading box (1). The clamping head (2) has a clamping rotating assembly (3) inside. The clamping rotating assembly (3) includes a groove at the outer end of the clamping head (2). A gripper (301) is rotatably connected inside the groove. A clamping plate (302) is fixedly connected to the outer end of the gripper (301). A connecting groove (303) is provided at the top of the clamping plate (302). A connecting rod (304) is movably connected inside the connecting groove (303). A clamp plate (305) is fixedly connected to the bottom end of the 304), and a hollow connecting column (306) is fixedly connected to one end of the clamp head (2). The hollow connecting column (306) is rotatably connected to the loading box (1). A driven gear (307) is fixedly connected to the outer end of the hollow connecting column (306). A transmission gear (308) meshes with the outer end of the driven gear (307). The driven gear (307) and the transmission gear (308) are rotatably connected inside the loading box (1).

2. The quick clamping device for a cold rolling mill according to claim 1, characterized in that, The snap-fit ​​rotating assembly (3) further includes an inner plate (309) fixedly connected to the inside of the snap-fit ​​head (2). A stop rod (3010) is fixedly connected to the inner side of the inner plate (309). A slide plate (3011) is slidably connected to the outer end of the stop rod (3010). The slide plate (3011) is slidably connected to the inside of the snap-fit ​​head (2). A rotating rod (3012) is rotatably connected between the gripper (301) and the slide plate (3011).

3. The quick clamping device for a cold rolling mill according to claim 1, characterized in that, The outer end of the connecting rod (304) is provided with a sliding groove, and a movable rod is fixedly connected inside the connecting groove (303). The sliding rod is movably connected to the sliding groove. The locking and rotating assembly (3) also includes a first spring (3013) sleeved on the outer end of the connecting rod (304). The first spring (3013) is fixedly connected between the locking plate (302) and the clamping plate (305).

4. The quick clamping device for a cold rolling mill according to claim 2, characterized in that, The snap-fit ​​rotating assembly (3) also includes an assembly ring (3014) fixedly connected inside the loading box (1). The assembly ring (3014) is rotatably connected to the driven gear (307). A hydraulic cylinder (3015) is fixedly connected to the outer end of the loading box (1). A push rod (3016) is fixedly connected to the telescopic part of the hydraulic cylinder (3015). The push rod (3016) is slidably connected to the inside of the hollow connecting column (306). The bottom end of the push rod (3016) is fixedly connected to the slide plate (3011). A first servo motor (3017) is fixedly connected to the outer end of the loading box (1). The output end of the first servo motor (3017) is fixedly connected to the transmission gear (308).

5. The quick clamping device for a cold rolling mill according to claim 1, characterized in that, Guide rods (4) are symmetrically fixedly connected to both sides of the loading box (1). Guide rails (5) are slidably connected inside the guide rods (4). Floors (6) are symmetrically fixedly connected to both ends of the two sets of guide rails (5). Support rods (7) are snapped between the two sets of floors (6).

6. The quick clamping device for a cold rolling mill according to claim 5, characterized in that, One set of the floorboards (6) is fixedly connected to the outer end of a second servo motor (8), and a bidirectional lead screw (9) is rotatably connected between the two sets of floorboards (6). The output end of the second servo motor (8) is fixedly connected to the bidirectional lead screw (9), and a connecting seat (10) is fixedly connected to the bottom end of the loading box (1). The bidirectional lead screw (9) is threadedly connected to the connecting seat (10).

7. The quick clamping device for a cold rolling mill according to claim 5, characterized in that, Another set of floorboards (6) has a first lower clamping ring (11) fixedly connected to the top end, a connecting rod (12) fixedly connected to the inner side of the first lower clamping ring (11), and a second lower clamping ring (13) fixedly connected to the outer end of the connecting rod (12). The top ends of the first lower clamping ring (11) and the second lower clamping ring (13) are both provided with upper clamping rings (14).

8. The quick clamping device for a cold rolling mill according to claim 7, characterized in that, Side plates (15) are symmetrically fixedly connected to the outer sides of the first lower clamping ring (11), the second lower clamping ring (13) and the upper clamping ring (14). A support rod (16) is slidably connected between the two side plates (15). A second spring (17) is fixedly connected between the two ends of the support rod (16) and the side plate (15).

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