Core rod fixing structure in alloy pipe cold rolling mill

Abstract

The utility model relates to the technical field of metallurgical mechanical equipment, and discloses a core rod fixing structure in an alloy pipe cold rolling mill, a fixing device is composed of a bidirectional threaded rod, a threaded block, a sliding rod, a sliding block, a connecting rod, a clamping block, a first bevel gear, a shaft rod and a second bevel gear, the threaded block is installed on the surface of the bidirectional threaded rod in a threaded mode, the sliding rod is fixedly installed in the clamping shell, the sliding block is installed on the surface of the sliding rod in a sliding mode, the connecting rod is fixedly installed on the side face of the sliding block, and the clamping block is fixedly installed on the side face of the connecting rod. According to the core rod fixing structure in the alloy pipe cold rolling mill, the shaft rod can rotate by rotating the handle, the connecting rod can horizontally move under the action of the bidirectional threaded rod, the threaded block, the sliding rod, the sliding block, the first bevel gear and the second bevel gear, the core rod can be clamped and fixed through the clamping block, use is convenient, and the clamping and fixing effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical mechanical equipment, in particular to a core rod fixing structure in an alloy tube cold rolling tube machine. Background Art

[0002] The cold rolling mill is a process equipment that uses an annular hole to cold roll the rough pipe. The machine has good blanking performance and can also roll non-ferrous metal seamless pipes of ordinary precision. The biggest 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 patent with application number 202222461425.5 discloses a mandrel rod clamping mechanism for a cold rolling tube machine, including a clamping shell, a material through hole is opened on the surface of the clamping shell, and the material through hole is communicated with the interior of the clamping shell, a control groove is opened on the rear side of the clamping shell, and the control groove is communicated with the interior of the clamping shell, a first sliding plate is fixedly connected to the front inner wall of the clamping shell, a second sliding plate is slidably connected to the bottom wall of the clamping shell, a rotating shaft is provided on the outer side of the clamping shell, and one end of the rotating shaft close to the clamping shell is threaded through the outer surface of the first sliding plate, the surface of the clamping shell is threadedly connected to the rotating shaft, and the bottom wall of the clamping shell is fixedly connected to a column.

[0004] The mandrel rod clamping mechanism of the cold rolling tube machine is that the operator rotates the rotating shaft to push the rotating shaft to move in the direction of the second sliding plate, and finally the rotating shaft is threadedly connected to the threaded hole opened on the outer surface of the second sliding plate. The threaded connection between the rotating shaft and the threaded hole fixes the first sliding plate and the second sliding plate in a predetermined position. By restricting the positions of the first sliding plate and the second sliding plate, the clamping of the mandrel rod by the first sliding plate and the second sliding plate is made more stable. However, there are still areas that can be improved. For example, when fixing the mandrel rod, the device needs to rotate the operating shaft first and then the rotating shaft, and vice versa to release the fixation of the mandrel rod. It is inconvenient to use and cannot meet current needs. Utility Model Content

[0005] The utility model aims to provide a core rod fixing structure in an alloy tube cold rolling mill to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a core rod fixing structure in an alloy tube cold rolling mill, comprising a clamping shell, a fixing device, and a limiting device, wherein the fixing device is arranged inside the clamping shell, and the limiting device is arranged on the side of the clamping shell.

[0007] The fixing device is composed of a bidirectional threaded rod, a threaded block, a sliding rod, a slider, a connecting rod, a clamping block, a first bevel gear, a shaft rod, and a second bevel gear. The bidirectional threaded rod is rotatably installed inside the clamping shell, the threaded block is threadedly installed on the surface of the bidirectional threaded rod, the sliding rod is fixedly installed inside the clamping shell, the slider is slidably installed on the surface of the sliding rod, the connecting rod is fixedly installed on the side of the slider, the clamping block is fixedly installed on the side of the connecting rod, the first bevel gear is fixedly installed on the surface of the bidirectional threaded rod, the shaft rod is rotatably installed inside the clamping shell, and the second bevel gear is fixedly installed on the surface of the shaft rod.

[0008] Preferably, the limiting device is composed of a ratchet, a fixed shaft, a pawl, a torsion spring, and a fixed column. The ratchet is fixedly installed on the surface of the shaft rod, the fixed shaft is fixedly installed on the side of the clamping shell, the pawl is sleeved on the surface of the fixed shaft, the torsion spring is sleeved on the surface of the fixed shaft, and the fixed column is fixedly installed on the surface of the pawl. The limiting device is provided to keep the clamping block fixed to the core rod, which is easy to use.

[0009] Preferably, the other end of the connecting rod connected to the slider is fixedly connected to the threaded block, and the threaded block is driven to rotate by the bidirectional threaded rod. Under the action of the sliding rod and the slider, the connecting rod can move horizontally.

[0010] Preferably, the first bevel gear is meshed with the second bevel gear, and the second bevel gear can be driven to rotate through the shaft rod. Under the action of the first bevel gear, the bidirectional threaded rod can be rotated.

[0011] Preferably, the threaded block, slider, connecting rod and clamping block are all grouped together, and there are two groups symmetrically arranged on the surface of the bidirectional threaded rod. Two groups of these components are provided to clamp and fix the mandrel rod.

[0012] Preferably, a handle is fixedly mounted on the other end of the shaft rod connected to the clamping shell, and the shaft rod can be rotated by rotating the handle.

[0013] Preferably, the ratchet and the pawl are meshed, and the pawl is provided to limit the position of the ratchet.

[0014] Preferably, one end of the torsion spring is fixedly connected to the fixed shaft, and the other end is fixedly connected to the pawl, and the torsion spring is provided to reset the pawl.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The core rod fixing structure in the alloy tube cold rolling mill can rotate the shaft rod by turning the handle. Under the action of the bidirectional threaded rod, the threaded block, the sliding rod, the slider, the first bevel gear and the second bevel gear, the connecting rod can be moved horizontally. The core rod can be clamped and fixed by the clamping block. It is easy to use and has a good clamping and fixing effect.

[0017] (2) The mandrel fixing structure in the alloy tube cold rolling mill is provided with a torsion spring so that the pawl can limit the ratchet wheel and keep the clamping block fixed to the mandrel rod. By turning the fixing column, the pawl can release the limit on the ratchet wheel and turn the handle to facilitate the removal of the mandrel rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the sliding rod, the sliding block and the connecting rod of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the clamping block, the first bevel gear and the shaft rod of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the fixed shaft, the ratchet pawl and the torsion spring of the utility model.

[0023] In the figure: 1. clamping shell; 2. fixing device; 201. bidirectional threaded rod; 202. threaded block; 203. sliding rod; 204. sliding block; 205. connecting rod; 206. clamping block; 207. first bevel gear; 208. shaft rod; 209. second bevel gear; 3. limiting device; 301. ratchet; 302. fixed shaft; 303. pawl; 304. torsion spring; 305. fixing column. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4The utility model provides a technical solution: a core rod fixing structure in an alloy tube cold rolling mill, comprising a clamping shell 1, a fixing device 2, and a limiting device 3, wherein the fixing device 2 is arranged inside the clamping shell 1, and the limiting device 3 is arranged on the side of the clamping shell 1.

[0026] The fixing device 2 is composed of a bidirectional threaded rod 201, a threaded block 202, a slide bar 203, a slider 204, a connecting rod 205, a clamping block 206, a first bevel gear 207, a shaft rod 208, and a second bevel gear 209. The bidirectional threaded rod 201 is rotatably installed inside the clamping housing 1, the threaded block 202 is threadedly installed on the surface of the bidirectional threaded rod 201, the slide bar 203 is fixedly installed inside the clamping housing 1, the slider 204 is slidably installed on the surface of the slide bar 203, the connecting rod 205 is fixedly installed on the side of the slider 204, and the other end of the connecting rod 205 and the slider 204 is fixedly connected to the threaded block 202. The threaded block 202 is driven to rotate by the bidirectional threaded rod 201. Under the action of the slide bar 203 and the slider 204, the connecting rod 205 can be horizontally moved, and the clamping block 206 is fixedly installed. Installed on the side of the connecting rod 205, the threaded block 202, the slider 204, the connecting rod 205, and the clamping block 206 are all one in a group, and there are two groups symmetrically arranged on the surface of the bidirectional threaded rod 201. Two groups of this component are provided to clamp and fix the mandrel rod. The first bevel gear 207 is fixedly installed on the surface of the bidirectional threaded rod 201, and the shaft rod 208 is rotatably installed inside the clamping shell 1. The other end of the shaft rod 208 connected to the clamping shell 1 is fixedly installed with a handle, and the shaft rod 208 can be rotated by turning the handle. The second bevel gear 209 is fixedly installed on the surface of the shaft rod 208, and the first bevel gear 207 and the second bevel gear 209 are meshed. The second bevel gear 209 can be driven to rotate by the shaft rod 208. Under the action of the first bevel gear 207, the bidirectional threaded rod 201 can be rotated.

[0027] The limiting device 3 is composed of a ratchet 301, a fixed shaft 302, a pawl 303, a torsion spring 304, and a fixed column 305. The ratchet 301 is fixedly installed on the surface of the shaft 208, the fixed shaft 302 is fixedly installed on the side of the clamping shell 1, the pawl 303 is sleeved on the surface of the fixed shaft 302, the ratchet 301 and the pawl 303 are meshed, and the pawl 303 is provided to limit the ratchet 301, the torsion spring 304 is sleeved on the surface of the fixed shaft 302, and the fixed column 305 is fixedly installed on the surface of the pawl 303, one end of the torsion spring 304 is fixedly connected to the fixed shaft 302, and the other end is fixedly connected to the pawl 303, and the torsion spring 304 is provided to reset the pawl 303. The limiting device 3 can keep the clamping block 206 fixed to the core rod, which is easy to use.

[0028] When in use, the handle is turned to rotate the shaft 208, which can drive the second bevel gear 209 to rotate. Under the action of the first bevel gear 207, the bidirectional threaded rod 201 can drive the threaded block 202 to rotate. Under the action of the slide bar 203 and the slider 204, the connecting rod 205 can move horizontally. The mandrel rod can be clamped and fixed by the clamping block 206, and under the action of the torsion spring 304, the pawl 303 can limit the ratchet 301 to keep the current position of the mandrel. When the rod is fixed, the fixing column 305 is moved to release the limit on the ratchet 301 by moving the fixing column 305, and the shaft 208 can be rotated by turning the handle, which can drive the second bevel gear 209 to rotate. Under the action of the first bevel gear 207, the bidirectional threaded rod 201 can drive the threaded block 202 to rotate. Under the action of the sliding rod 203 and the sliding block 204, the connecting rod 205 can be moved horizontally, so that the clamping block 206 releases the fixation of the mandrel rod, which is convenient for taking out the mandrel rod.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A core rod fixing structure for an alloy tube cold rolling mill, comprising a clamping shell (1), a fixing device (2), and a limiting device (3), characterized in that: The fixing device (2) is arranged inside the clamping shell (1), and the limiting device (3) is arranged on a side surface of the clamping shell (1); The fixing device (2) is composed of a bidirectional threaded rod (201), a threaded block (202), a sliding rod (203), a slider (204), a connecting rod (205), a clamping block (206), a first bevel gear (207), a shaft (208), and a second bevel gear (209); the bidirectional threaded rod (201) is rotatably mounted inside the clamping housing (1); the threaded block (202) is threadedly mounted on the surface of the bidirectional threaded rod (201); and the sliding rod (203) is fixedly mounted on the clamping housing. The housing (1) is provided with a sliding block (204) which is slidably mounted on the surface of the sliding rod (203), the connecting rod (205) is fixedly mounted on the side of the sliding block (204), the clamping block (206) is fixedly mounted on the side of the connecting rod (205), the first bevel gear (207) is fixedly mounted on the surface of the bidirectional threaded rod (201), the shaft (208) is rotatably mounted on the inside of the clamping housing (1), and the second bevel gear (209) is fixedly mounted on the surface of the shaft (208).

2. The core rod fixing structure in the alloy tube cold rolling mill according to claim 1, characterized in that: The limiting device (3) is composed of a ratchet (301), a fixed shaft (302), a pawl (303), a torsion spring (304), and a fixed column (305); the ratchet (301) is fixedly mounted on the surface of the shaft (208); the fixed shaft (302) is fixedly mounted on the side of the clamping housing (1); the pawl (303) is sleeved on the surface of the fixed shaft (302); the torsion spring (304) is sleeved on the surface of the fixed shaft (302); and the fixed column (305) is fixedly mounted on the surface of the pawl (303).

3. The core rod fixing structure in the alloy tube cold rolling mill according to claim 1, characterized in that: The other end of the connecting rod (205) connected to the sliding block (204) is fixedly connected to the threaded block (202).

4. The core rod fixing structure in the alloy tube cold rolling mill according to claim 1, characterized in that: The first bevel gear (207) and the second bevel gear (209) are meshed.

5. The core rod fixing structure in the alloy tube cold rolling mill according to claim 1, characterized in that: The threaded block (202), the sliding block (204), the connecting rod (205), and the clamping block (206) are all grouped together, with two groups in total being symmetrically arranged on the surface of the bidirectional threaded rod (201).

6. The core rod fixing structure in the alloy tube cold rolling mill according to claim 1, characterized in that: The other end of the shaft rod (208) connected to the clamping housing (1) is fixedly mounted with a handle.

7. The core rod fixing structure in the alloy tube cold rolling mill according to claim 2, characterized in that: The ratchet wheel (301) and the pawl (303) are meshed.

8. The core rod fixing structure in the alloy tube cold rolling mill according to claim 2, characterized in that: One end of the torsion spring (304) is fixedly connected to the fixed shaft (302), and the other end is fixedly connected to the ratchet (303).

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