CN116000096A - Multi-roller cold pilger mill with roller rotation mechanism - Google Patents

Abstract

The invention provides a multi-roller cold pilger mill with a roller rotation mechanism; comprising the following steps: the device comprises a roller rotating mechanism consisting of a rotating spline shaft (1), a sliding gear (4) and a shifting ring (3), a frame trolley (2) and a machine head sleeve (5); the machine head sleeve (5) is arranged in the frame trolley (2); the frame trolley (2) is in operative connection with the roller slewing mechanism. According to the invention, the roller in the machine head sleeve is driven to rotate by the rotary spline shaft, the sliding gear and the machine head sleeve gear, and the rack trolley moves the sliding gear through the shifting ring to reciprocate on the rotary spline, so that the sliding gear moves along with the rack trolley in a reciprocating and linear mode to drive the roller to rotate. The invention has simple structure, easy disassembly, low cost, obvious effect and accurate and reliable rotation.

Description

A kind of multi-roll cold rolling pipe mill with roll turning mechanism

technical field

The invention belongs to the technical field of metallurgical equipment; in particular, it relates to a multi-roller cold-rolled pipe mill with a roll turning mechanism.

Background technique

With the development of my country's economy, the following fields: nuclear power, medicine and health, aerospace and military industry, etc., the demand for small-caliber thin-wall cold-rolled precision seamless pipes is also increasing. Of course, the market demand for multi-roll precision cold-rolled pipe machines The demand is also increasing year by year. The existing technology can no longer meet the demand, because the existing technology has the following deficiencies: backward technical level, low production efficiency, and low output; therefore, it cannot meet the market's demand for high-precision small-caliber thin-walled seamless pipes for mass supply. Due to the actual production process of the small-diameter seamless pipe, in order to ensure the roundness of the pipe, the following operation procedures need to be completed: the billet to be rolled must be rotated by a certain angle after each rolling stroke. At present, the existing operation process is: the rotation of the mandrel rod is used to complete the rotation of the tube blank. Since the outer diameter of the mandrel rod is very small, the distance from the mandrel chuck to the rolling deformation zone is long; in addition, the mandrel rod itself is a slender rod, so it is easy to bend and deform during operation, so that The inaccurate rotation angle transmitted by the rotation of the mandrel rod will eventually lead to the phenomenon of low yield and poor dimensional accuracy of the produced seamless pipe. In order to solve the above technical problems, a production method that improves the yield of seamless pipe and high dimensional accuracy is urgently needed. equipment.

Contents of the invention

The object of the present invention is to provide a multi-roll cold pipe mill with a roll turning mechanism, which is suitable for producing small-diameter seamless pipes.

The present invention is achieved through the following technical solutions:

The invention relates to a multi-roll cold-rolled pipe mill with a roll slewing mechanism, comprising:

The roll rotation mechanism composed of the rotary spline shaft 1, the sliding gear 4 and the dial ring 3, the frame trolley 2, and the head sleeve 5;

Wherein, the nose sleeve 5 is installed inside the frame trolley 2;

The frame trolley 2 is functionally connected with the roll turning mechanism.

Preferably, the outer surface of the head sleeve 5 is provided with a gear, and the inside thereof is provided with a slideway 7 and an adjusting tilt iron 6 .

Preferably, there are support bearings at both ends of the head sleeve 5 to facilitate the rotation of the head sleeve 5 .

Preferably, the sliding gear 4 and dialing ring 3 of the roll turning mechanism are both arranged on the rotary spline shaft 1, and the sliding gear 4 is mated with the dialing ring 3, wherein the sliding gear 4 can be mounted on the rotary spline shaft 1 move.

Preferably, the dial ring 3 on the roll slewing mechanism is connected with the rack trolley 2 .

Preferably, the dial ring 3 is connected to the frame trolley 2 through a pin shaft at one end thereof, and the dial ring 3 can reciprocate along with the rack trolley 2 .

In the present invention, a roll rotation mechanism is provided outside the frame trolley 2, and the rotation of the roll 8 is realized by operating the roll rotation mechanism, specifically: rotary spline shaft 1—sliding gear 4—head sleeve 5 gear drives the head sleeve 5. The internal roller 8 rotates, and the rack trolley 2 drives the sliding gear 4 to reciprocate on the rotary spline shaft 1 through the dial ring 3, so that the sliding gear 4 follows the rack trolley 2 to reciprocate linearly and drives the roll 8 to rotate.

The present invention has the following advantages:

(1) The present invention drives the rollers inside the nose sleeve to rotate through the rotary spline shaft—sliding gear——head sleeve gear, and the frame trolley drives the sliding gear through the dial ring to reciprocate on the rotary spline together to realize The sliding gear follows the reciprocating linear motion of the frame trolley to drive the roll to rotate, and the invention solves the problems of deflection and inaccurate rotation angle caused by the rotation of the mandrel rod in the prior art.

(2) The present invention is simple in structure, easy to disassemble, low in cost, remarkable in effect, accurate and reliable in rotation, and is a multi-roll cold-rolling pipe mill with a roll rotation mechanism that can significantly improve the precision of the outer diameter of finished pipes.

(3) The present invention has great significance for improving the yield of seamless pipes and improving the precision of the outer diameter of finished pipes.

Description of drawings

Fig. 1 is the top view of the multi-roll cold-rolled pipe mill with roll turning mechanism involved in the present invention;

Fig. 2 is the cross-sectional view of the multi-roll cold-rolled pipe mill with roll turning mechanism involved in the present invention;

Drawings: 1. Rotary spline shaft; 2. Rack trolley; 3. Dial ring; 4. Sliding gear; 5. Head sleeve; 6. Adjusting inclined iron; 7. Slideway; 8. Roller.

Detailed ways

The present invention will be described in detail below in conjunction with specific embodiments. It should be noted that the following implementation examples are only further descriptions of the present invention, but the protection scope of the present invention is not limited to the following examples.

Example

This embodiment relates to a multi-roll cold-rolled pipe mill with a roll slewing mechanism, as shown in Figures 1 and 2: including:

The roll rotation mechanism composed of the rotary spline shaft 1, the sliding gear 4 and the dial ring 3, the frame trolley 2, and the head sleeve 5;

Wherein, the nose sleeve 5 is installed inside the frame trolley 2;

The frame trolley 2 is functionally connected with the roll turning mechanism.

Further, the outer surface of the nose sleeve 5 is provided with a gear, and the inside thereof is provided with a slideway 7 and an adjusting tilt iron 6 .

Further, there are support bearings at both ends of the head sleeve 5, which facilitates the rotation of the head sleeve 5.

Further, the sliding gear 4 and dialing ring 3 of the roll turning mechanism are all arranged on the rotary spline shaft 1, and the sliding gear 4 is connected with the dialing ring 3, wherein the sliding gear 4 can be mounted on the rotary spline shaft 1 move.

Further, the dial ring 3 on the roll turning mechanism is connected with the frame trolley 2 .

Further, the dial ring 3 is connected to the frame trolley 2 through a pin shaft at one end thereof, and the dial ring 3 can reciprocate along with the rack trolley 2 .

In the present invention, a roll rotation mechanism is provided outside the frame trolley 2, and the rotation of the roll 8 is realized by operating the roll rotation mechanism, specifically: rotary spline shaft 1—sliding gear 4—head sleeve 5 gear drives the head sleeve 5. The internal roller 8 rotates, and the rack trolley 2 drives the sliding gear 4 to reciprocate on the rotary spline shaft 1 through the dial ring 3, so that the sliding gear 4 follows the rack trolley 2 to reciprocate linearly and drives the roll 8 to rotate.

Roller 8 of the present invention reciprocates along the curved surface of slideway 7 in the axial direction to realize the rolling function. Slideway 7 and adjusting inclined iron 6 are fixed on the inner hole of head sleeve 5, and the machine installed in the rack trolley The outer ring of the head sleeve 5 is processed with a ring of gears, and the two ends of the head sleeve 5 are supported by bearings, so the head sleeve is rotatable, and a roll turning mechanism (by the rotary spline shaft 1 , sliding gear 4 and dialing ring 3), the present invention is operated by the rotary spline shaft 1, and the sliding gear 4 on it starts to rotate, driving the dialing ring 3 connected with the frame trolley 2 to move, so that it can pass through the rotary spline Key shaft 1—sliding gear 4—the gear of the head sleeve 5 drives the roll 8 inside the head sleeve 5 to rotate, and the frame trolley 2 drives the sliding gear through the dial ring 3 to reciprocate on the rotary spline to realize The sliding gear 4 drives the roll 8 to rotate while following the reciprocating linear motion of the frame trolley 2 .

Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention.

Claims (6)

1. A multi-roll cold-rolled pipe mill with roll slewing mechanism, is characterized in that, comprising: A roll rotation mechanism, a frame trolley (2), and a head sleeve (5) composed of a rotary spline shaft (1), a sliding gear (4) and a dial ring (3); Wherein, the nose sleeve (5) is installed inside the frame trolley (2); The frame trolley (2) is functionally connected with the roll turning mechanism. 2. The multi-roll cold-rolled pipe mill with roll turning mechanism as claimed in claim 1, characterized in that, the outer surface of the head sleeve (5) is provided with a gear, and its interior is provided with a slideway (7) and adjust the tilt iron (6). 3. The multi-roll cold-rolled pipe mill with roll turning mechanism as claimed in claim 1, characterized in that, there are support bearings at both ends of the head sleeve (5). 4. the multi-roll cold-rolled pipe mill with roll turning mechanism as claimed in claim 1, is characterized in that, the sliding gear (4), dial ring (3) of described roll turning mechanism are all arranged on the rotary spline shaft ( 1), and the sliding gear (4) is connected with the dial ring (3). 5. The multi-roll cold-rolled pipe mill with roll turning mechanism according to claim 1, characterized in that, the dial ring (3) on the roll turning mechanism is connected with the frame trolley (2). 6. The multi-roll cold-rolled pipe mill with roll turning mechanism according to claim 1, characterized in that, the dial ring (3) is connected to the frame trolley (2) through a pin shaft at one end thereof.

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