An open roll

Abstract

The utility model relates to the technical field of roll of pilger two roll cold reduction pipe mill, disclose an open type roll, including roll axle, the outside fixed connection of roll axle has the locating block, the small diameter section sliding connection open type roll of locating block, open type roll, the whole is circular ring, is equipped with opening, is equipped with variable cross section rolling groove on the outer circle one week, the inside of locating block passes through fixed component, the fixed component includes bolt, the outside thread of bolt passes through locating block inside connection in the inside of roll axle. In the utility model, the open type roll is sleeved on the roll axle, the open type roll inner hole is slidably connected on the outside of roll axle, the opening is embedded in the flat place of roll axle, the inner hole of open type roll is slidably connected with the small diameter section of locating block, then the two locating blocks are pressed tightly on one side plane of open type roll by bolt and are fixedly connected on the roll axle, when two bolts are unscrewed, the locating block is removed, the open type roll can be removed from the roll axle without disassembling the bearing seat of the both ends of roll axle, thereby the effect that the open type roll is replaced quickly is realized.

Description

Technical Field

[0001] This utility model relates to the field of roll technology for Pilger two-roll cold rolling mills, and particularly to an open-type roll. Background Technology

[0002] Against the backdrop of the rapid development of modern manufacturing, metal pipes, as a key basic material, are widely used in many fields such as aerospace, nuclear energy, medical and health care, petrochemicals, water conservancy projects, precision machinery manufacturing, and construction. As the core component in the cold rolling process of pipes, the design and performance of the rolls affect the forming shape, forming quality, dimensional accuracy and production stability of the pipes. Through specific groove structures and rolling processes, the rolls can achieve cold rolling processing of metal pipes of different specifications and materials.

[0003] When the rolls are working, the pairs of rolls rotate in opposite directions. When the tube enters the groove of the two rolls, under the extrusion force of the rolls, the tube undergoes plastic deformation under the constraint of the groove, and finally obtains a cross-sectional shape that matches the profile of the groove, thus completing the cold rolling process from tube blank to finished product with a specific cross-section.

[0004] In the existing pipe production process, it is difficult to achieve rapid replacement of rollers, mainly due to the complexity of the roller design shape and the connection structure with the equipment. In production, when it is necessary to replace the rollers to adapt to different specifications of pipes, operators need to spend a lot of time disassembling, installing and calibrating. To address this issue, an open-type roller is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an open-type roll, which aims to improve the problem of the difficulty in quickly changing rolls in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An open-type rolling mill includes a rolling mill shaft, a positioning block fixedly connected to the outside of the rolling mill shaft, and a small-diameter section of the positioning block slidably connected to the open-type rolling mill. The open-type rolling mill is generally annular with an opening and a variable cross-section groove is provided on the outer circumference. A fixing component passes through the inside of the positioning block.

[0008] As a further description of the above technical solution:

[0009] The fixing component includes a bolt, the external threads of which pass through the interior of the positioning block and connect to the interior of the roll shaft.

[0010] As a further description of the above technical solution:

[0011] The open-type roll is mounted on the roll shaft, and the inner hole of the open-type roll is slidably connected to the outside of the roll shaft, with the opening embedded in the flat part of the roll shaft;

[0012] As a further description of the above technical solution:

[0013] The inner hole of the open-type roll is slidably connected to the small-diameter section of the positioning block;

[0014] As a further description of the above technical solution:

[0015] The outer edge boss of the positioning block presses against one side plane of the open-type roll and is fixedly connected to the roll shaft;

[0016] This utility model has the following beneficial effects:

[0017] In this invention, an open-type roll is mounted on a roll shaft. The inner hole of the open-type roll is slidably connected to the outside of the roll shaft. The open-type roll is circular in shape, with a variable cross-section groove on its outer circumference. The open-type roll has an opening that is embedded in the flat part of the roll shaft. The inner hole of the open-type roll is slidably connected to a positioning block. Bolts are used to press the outer edge protrusions of the two positioning blocks against one side plane of the open-type roll and fix it to the roll shaft. When the two bolts are unscrewed, the positioning block can be removed, and the open-type roll can be removed from the roll shaft without disassembling the bearing seats at both ends of the roll shaft, thus achieving the effect of quick replacement of the open-type roll. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the assembly of an open-type rolling mill according to the present invention;

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the roll shaft of an open-type roll proposed in this utility model;

[0020] Figure 3 This is a three-dimensional structural schematic diagram of a positioning block for an open-type rolling mill according to the present invention.

[0021] Figure 4 This is a three-dimensional structural diagram of an open-type rolling mill proposed in this utility model.

[0022] Legend:

[0023] 1. Roll shaft; 2. Open-type roll; 3. Positioning block; 4. Bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figures 1 to 4 This utility model provides an embodiment of an open-type rolling mill roll, comprising a rolling mill shaft 1, a positioning block 3 fixedly connected to the outside of the rolling mill shaft 1, and an open-type rolling mill roll 2 slidably connected to the small-diameter section of the positioning block 3. The open-type rolling mill roll 2 is generally annular with an opening and a variable cross-section groove on its outer circumference. A fixing assembly, including a bolt 4, passes through the inside of the positioning block 3 and is connected to the inside of the rolling mill shaft 1. The open-type rolling mill roll 2 is fitted onto the rolling mill shaft 1. The hole is slidably connected to the outside of the roll shaft 1; the open-type roll 2 has an opening, and the outside of the roll shaft 1 has a flat part. The opening of the open-type roll 2 is embedded in the flat part of the roll shaft 1. The inner hole of the open-type roll 2 is slidably connected to the small diameter section of the positioning block 3; the outer edge bosses of the two positioning blocks 3 are pressed against one side plane of the open-type roll 2 by bolts 4, and the open-type roll 2 is fixedly connected to the roll shaft 1; the open-type roll 2 uses the rolling groove around the outer circle to roll the tube blank, completing the cold rolling process from the tube blank to the finished product with a specific cross section.

[0026] Working principle: First, the open-type roll 2 is generally circular with an opening and a variable cross-section groove on its outer circumference; the roll shaft 1 serves as the core support component, and the open-type roll 2 is fitted onto the roll shaft 1. The inner hole of the open-type roll 2 is slidably connected to the outside of the roll shaft 1, while the opening of the open-type roll 2 is embedded in the flat part of the roll shaft 1; under the action of the two positioning blocks 3 and the roll shaft 1, the open-type roll 2 and the roll shaft 1 always remain concentric; the inside of the positioning block 3 passes through the fixing component, which includes bolts 4. The bolts 4 press the outer edge bosses of the two positioning blocks 3 against one side plane of the open-type roll 2, and fix the open-type roll 2 to the roll shaft 1. When production needs change and the open-type roll 2 needs to be replaced, there is no need to disassemble the roll shaft 1 and the bearing seats at both ends. Just unscrew the two bolts 4, and then slide the positioning block 3 to remove it. Since the open-type roll 2 has an opening, the width of which is equal to the flat part of the roll shaft 1, after the constraint of the positioning block is removed, the open-type roll 2 can be easily slid out along the flat part of the roll shaft 1, thereby realizing the replacement of the roll.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An open-type rolling mill roll, comprising a rolling mill shaft (1), characterized in that: The external fixed connection of the roll shaft (1) is a positioning block (3), and the small diameter section of the positioning block (3) is slidably connected to the inner hole of the open-type roll (2). The open-type roll (2) is generally circular and has an opening. A variable cross section groove is provided on the outer circumference. The fixed component passes through the interior of the positioning block (3).

2. The open-type roll according to claim 1, characterized in that: The fixing component includes a bolt (4), the external thread of which passes through the interior of the positioning block (3) and connects to the interior of the roll shaft (1).

3. An open-type roll according to claim 1, characterized in that: The open-type roll (2) is mounted on the roll shaft (1), and the inner hole of the open-type roll (2) is slidably connected to the outside of the roll shaft (1). The opening of the open-type roll (2) is embedded in the flat part of the roll shaft (1).

4. An open-type roll according to claim 1, characterized in that: The inner hole of the open-type roll (2) is slidably connected to the outside of the small diameter section of the positioning block (3).

5. An open-type roll according to claim 1, characterized in that: The outer edge boss of the positioning block (3) presses against one side plane of the open-type roll (2).

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