Reducing device for shell barrel

Abstract

The reducing device comprises an outer pipe body, an inner pipe body is connected to the position, close to the bottom, in the outer pipe body in a sleeved mode, the top of the outer pipe body and the top of the inner pipe body are both closed, the inner pipe body is connected with a cylinder in a sliding mode, a plurality of evenly-distributed inner reducing plates are attached to the outer wall of the cylinder, and the inner reducing plates are connected with the outer wall of the cylinder in a sliding mode. And an outer expansion plate is hinged to the side, away from the cylinder, of the inner reducing plate, a cavity is formed in the cylinder, a circular truncated cone block is slidably connected into the cavity, a threaded hole is formed in the circular truncated cone block, and a lead screw is arranged in the threaded hole in a sleeved mode. According to the technical scheme, through mutual cooperation of the circular truncated cone block, the electric push rod, the inner reducing plate, the outer expansion plate and other components, the situation that the device can only conduct single-time reducing can be effectively avoided, therefore, secondary expansion can be conducted, the reducing efficiency and the use efficiency of the device are improved, meanwhile, effective position limiting can be achieved, and the service life of the device is prolonged. And position deviation generated in the diameter changing process can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to a diameter-changing device, in particular to a diameter-changing device used for a shell cylinder. Background Art

[0002] The shell cylinder is one of the indispensable items in our daily life, which brings great convenience to people's lives. In the daily production and manufacturing process of the shell cylinder, a diameter reducing device is needed to reduce the diameter thereof. However, the diameter reducing device for the shell cylinder in the prior art can only perform a single diameter reduction when used, so that it cannot be expanded a second time, which reduces its diameter reduction efficiency and use efficiency. Therefore, we propose a diameter reducing device for the shell cylinder. Utility Model Content

[0003] In view of the deficiencies of the prior art, the utility model provides a diameter-changing device for a shell cylinder, which overcomes the deficiencies of the prior art.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a diameter-changing device for a shell cylinder, comprising an outer tube body, an inner tube body being sleeved near the bottom of the outer tube body, and the tops of the outer tube body and the inner tube body are both closed, the inner tube body is slidably connected to a cylinder, a plurality of evenly distributed inner diameter-changing plates are attached to the outer wall of the cylinder, and an outer expansion plate is hinged to the side of the inner diameter-changing plate away from the cylinder.

[0005] As an optimal technical solution of the utility model, a cavity is provided in the cylinder, and a truncated cone block is slidably connected in the cavity, a threaded hole is provided on the truncated cone block, and a screw rod is sleeved in the threaded hole, the top and bottom ends of the screw rod respectively pass through the threaded holes and are movably connected to the top and bottom of the inner cavity of the cavity through bearings, the top of the cylinder is connected to a servo motor by bolts, and the top of the screw rod passes through the inner ring of the bearing and is fixedly connected to the output shaft of the servo motor, a contact rod is connected to the side wall opposite to the inner reducer plate and the cylinder by bolts, and a through hole matching the contact rod is provided on the inner wall of the cavity, and the end of the contact rod away from the inner reducer plate passes through the through hole and fits on the side wall of the truncated cone block.

[0006] As a preferred technical solution of the utility model, the servo motor is outer-mounted with a cover body, and an electric cylinder is connected to the top of the inner cavity of the outer tube body by bolts. The electric cylinder passes through the inner tube body and is connected to the top of the cover body by bolts.

[0007] As a preferred technical solution of the utility model, the side of the outer expansion plate opposite to the cylinder is hinged to the side wall of the inner diameter reducing plate near the bottom through a hinge, and a groove is provided near the bottom on the side of the inner diameter reducing plate away from the cylinder, and an electric push rod is movably connected to the groove near the top through a rotating shaft and a bearing, and the end of the electric push rod away from the cylinder passes through the groove and is hinged to the side wall of the outer expansion plate near the bottom.

[0008] As a preferred technical solution of the utility model, a positioning plate is sleeved on the outer side of the outer tube near the bottom, and a positioning groove is provided at the bottom of the positioning plate.

[0009] As a preferred technical solution of the utility model, the top of the outer tube body is connected to a lower column by bolts, and an upper column is arranged above the lower column, the bottom of the upper column is connected to a screw rod by bolts, and a screw hole matching the screw rod is opened on the top of the lower column.

[0010] As a preferred technical solution of the utility model, sliding blocks are connected to the left and right sides of the truncated cone block near the top by bolts, and a sliding groove matching the sliding block is provided on the inner wall of the cavity.

[0011] The embodiment of the utility model provides a diameter-changing device for a shell cylinder, which has the following beneficial effects: the technical solution can effectively avoid the shell cylinder being able to only perform a single diameter change through the mutual cooperation between the truncated cone block, the electric push rod, the inner diameter-changing plate and the outer expansion plate, so that it can perform a second expansion, thereby improving its diameter-changing efficiency and utilization efficiency, and at the same time can achieve effective position limitation, which can effectively prevent position deviation during the diameter-changing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a main stereoscopic view of the utility model;

[0014] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure;

[0015] Figure 3 yes Figure 1 A in the enlarged view;

[0016] Figure 4 yes Figure 1 A partial three-dimensional view of the central circular table block, screw rod and other components.

[0017] In the figure: 1. outer tube body; 2. inner tube body; 3. positioning plate; 4. lower cylinder; 5. screw; 6. upper cylinder; 7. cover; 8. servo motor; 9. cylinder; 10. contact rod; 11. cavity; 12. screw; 13. frustum block; 14. inner reducer plate; 15. outer expansion plate; 16. electric cylinder; 17. positioning groove; 18. groove; 19. electric push rod. Implementation

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0019] Example: Figure 1-4 As shown, a diameter-changing device for a shell cylinder comprises an outer tube body 1, an inner tube body 2 is sleeved near the bottom of the outer tube body 1, and the tops of the outer tube body 1 and the inner tube body 2 are both closed, the inner tube body 2 is slidably connected to a cylinder 9, a plurality of evenly distributed inner diameter-changing plates 14 are attached to the outer wall of the cylinder 9, and an outer expansion plate 15 is hingedly connected to the side of the inner diameter-changing plate 14 away from the cylinder 9, a cavity 11 is provided in the cylinder 9, and the cavity 11 is slidably connected to the inner tube body 2. There is a truncated cone block 13, and sliders are connected by bolts on the left and right sides of the truncated cone block 13 near the top, and a slide groove matching the slider is opened on the inner wall of the cavity 11, and a threaded hole is opened on the truncated cone block 13, and a screw rod 12 is sleeved in the threaded hole, and the top and bottom ends of the screw rod 12 pass through the threaded holes respectively and are movably connected to the top and bottom of the inner cavity of the cavity 11 through bearings, and the top of the cylinder 9 is connected to the servo motor 8 by bolts, and the top of the screw rod 12 passes through the inner ring of the bearing and is fixedly connected to the output shaft of the servo motor 8, and the inner diameter reducing plate 14 is connected to the side wall opposite to the cylinder 9 by bolts. A through hole matching the contact rod 10 is opened on the inner wall of the cavity 11, and the end of the contact rod 10 away from the inner diameter reducing plate 14 passes through the through hole and fits on the side wall of the truncated cone block 13, the servo motor 8 is covered with a cover body 7, and the inner cavity top of the outer tube body 1 is connected to an electric cylinder 16 by bolts, and the electric cylinder 16 penetrates the inner tube body 2 and The outer expansion plate 15 is connected to the top of the cover body 7 by bolts, and the side opposite to the cylinder 9 is hinged to the side wall of the inner diameter reducing plate 14 near the bottom by a hinge. The side of the inner diameter reducing plate 14 away from the cylinder 9 is provided with a groove 18 near the bottom, and an electric push rod 19 is movably connected to the groove 18 near the top through a rotating shaft and a bearing. The end of the electric push rod 19 away from the cylinder 9 passes through the groove 18 and is hinged to the side wall of the outer expansion plate 15 near the bottom.

[0020] In this embodiment, it can effectively avoid that the diameter can only be changed once, so that it can be expanded twice, thereby improving its diameter change efficiency and utilization efficiency;

[0021] Among them, a positioning plate 3 is sleeved near the bottom of the outer tube body 1, and a positioning groove 17 is provided at the bottom of the positioning plate 3. The top of the outer tube body 1 is connected to a lower column 4 by bolts, and an upper column 6 is arranged above the lower column 4. The bottom of the upper column 6 is connected to a screw rod 5 by bolts, and a screw hole matching the screw rod 5 is provided on the top of the lower column 4.

[0022] In this embodiment, effective position limitation can be achieved, and position deviation during the diameter change process can be effectively prevented.

[0023] Working principle: When using this technical solution, first rotate the upper cylinder 6 clockwise or counterclockwise, and the upper cylinder 6 drives the screw 5 to rotate in the screw hole and move upward or downward, so as to adjust the distance between the upper cylinder 6 and the lower cylinder 4 and realize length adjustment. Then hold the upper cylinder 6, and then cover the shell cylinder with the positioning plate 3 and make the positioning groove 17 clamp its edge, so as to realize effective position limitation and effectively prevent its position deviation during the diameter change process. The electric cylinder 16 extends downward and drives the cylinder 9 to move out of the inner tube body 2 through the cover body 7, and the servo motor 8 drives the screw rod 12 to rotate forward or reverse, and the screw rod 12 makes the frustum block 13 move downward or upward, and makes the inner diameter-changing plate 14 move away from or close to each other with the cooperation of the contact rod 10, so as to realize the preliminary diameter change, and the extension and retraction of the electric push rod 19 can drive the outer expansion plate 15 to swing, so as to realize the expansion while adjusting its angle, so as to effectively avoid that it can only perform a single diameter change, so that it can perform a secondary expansion, thereby improving its diameter change efficiency and use efficiency.

[0024] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention 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. Therefore, they cannot be understood as limitations on the present invention.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A diameter-changing device for a shell cylinder, comprising an outer tube (1), characterized in that: The inner tube body (2) is sleeved near the bottom of the outer tube body (1), and the tops of the outer tube body (1) and the inner tube body (2) are both closed. The inner tube body (2) is slidably connected to a cylindrical body (9), and a plurality of evenly distributed inner diameter reducing plates (14) are attached to the outer wall of the cylindrical body (9), and an outer expansion plate (15) is hingedly connected to the side of the inner diameter reducing plate (14) away from the cylindrical body (9).

2. A diameter reducing device for a shell cylinder according to claim 1, characterized in that: A cavity (11) is provided in the cylinder (9), and a truncated cone block (13) is slidably connected in the cavity (11). A threaded hole is provided on the truncated cone block (13), and a screw rod (12) is sleeved in the threaded hole. The top and bottom ends of the screw rod (12) respectively pass through the threaded holes and are movably connected to the top and bottom of the inner cavity of the cavity (11) through bearings. The top of the cylinder (9) is connected to a servo motor (8) through bolts, and the top of the screw rod (12) passes through the inner ring of the bearing and is fixedly connected to the output shaft of the servo motor (8). A contact rod (10) is connected to the side wall of the inner diameter reducing plate (14) opposite to the cylinder (9) through bolts, and a through hole matching the contact rod (10) is provided on the inner wall of the cavity (11). The end of the contact rod (10) away from the inner diameter reducing plate (14) passes through the through hole and fits on the side wall of the truncated cone block (13).

3. A diameter reducing device for a shell cylinder according to claim 2, characterized in that: The servo motor (8) is provided with a cover body (7) on its outer sleeve, and an electric cylinder (16) is connected to the top of the inner cavity of the outer tube (1) via bolts; the electric cylinder (16) passes through the inner tube (2) and is connected to the top of the cover body (7) via bolts.

4. A diameter reducing device for a shell cylinder according to claim 3, characterized in that: The side of the outer expansion plate (15) opposite to the cylinder (9) is hinged to the side wall of the inner diameter reducing plate (14) near the bottom through a hinge, and the side of the inner diameter reducing plate (14) away from the cylinder (9) is provided with a groove (18) near the bottom, and an electric push rod (19) is movably connected to the groove (18) near the top through a rotating shaft and a bearing, and the end of the electric push rod (19) away from the cylinder (9) passes through the groove (18) and is hinged to the side wall of the outer expansion plate (15) near the bottom.

5. A diameter-changing device for a shell cylinder according to claim 4, characterized in that: A positioning plate (3) is sleeved on the outside of the outer tube body (1) near the bottom, and a positioning groove (17) is provided at the bottom of the positioning plate (3).

6. A diameter-changing device for a shell cylinder according to claim 5, characterized in that: The top of the outer tube body (1) is connected to a lower column (4) via bolts, and an upper column (6) is arranged above the lower column (4), the bottom of the upper column (6) is connected to a screw rod (5) via bolts, and a screw hole matching the screw rod (5) is provided on the top of the lower column (4).

7. A diameter-changing device for a shell cylinder according to claim 6, characterized in that: Slide blocks are connected to the left and right sides of the truncated cone block (13) near the top by bolts, and a slide groove matching the slide block is provided on the inner wall of the cavity (11).

Images