CN216235117U

CN216235117U - Clamping mechanism

Info

Publication number: CN216235117U
Application number: CN202122888785.9U
Authority: CN
Inventors: 赖红军
Original assignee: Foshan Aiyuan Machinery Equipment Co ltd
Current assignee: Foshan Aiyuan Machinery Equipment Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-04-08
Anticipated expiration: 2031-11-24

Abstract

The utility model particularly discloses a clamping mechanism which comprises a machine base, an air expansion shaft and a pressing unit, wherein the machine base is provided with a bayonet, and one side of the bayonet is provided with a fixed arm; one end of the air expansion shaft is rotatably arranged in the bayonet through a bearing; compress tightly the unit, including cylinder and depression bar, the cylinder of cylinder passes through the support arm connection on the frame, and the output shaft of cylinder rotates through first connecting rod and fixed arm to be connected, and the output shaft of cylinder rotates through the middle part of second connecting rod and depression bar to be connected, and the one end and the fixed arm of depression bar rotate to be connected, and the other end of depression bar is equipped with the pressure head, and the pressure head is located the bearing top, and the installation is put just swiftly with dismantling the physiosis axle, improves production efficiency.

Description

Clamping mechanism

Technical Field

The utility model relates to the technical field of winding equipment, in particular to a clamping mechanism.

Background

At present, a film or cloth is coiled into a coiled material through a coiling device after being produced, and in the coiling process, an air inflation shaft drives a paper core cylinder sleeved on the peripheral surface of the air inflation shaft to rotate ceaselessly, so that the film or cloth is coiled on the paper core cylinder. After the coil is wound to a predetermined size, the coil (together with the air shaft) needs to be removed from the stand. In the prior art, one end or two ends of the air expansion shaft are connected to the machine base through the connecting device, and although the air expansion shaft can be well fixed, the air expansion shaft is inconvenient to disassemble and low in production efficiency.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides a clamping mechanism which is convenient to install and disassemble an inflatable shaft.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a clamping mechanism comprises

The engine base is provided with a bayonet, and a fixed arm is arranged on one side of the bayonet;

one end of the air expansion shaft is rotatably arranged in the bayonet through a bearing;

the pressing unit comprises an air cylinder and a pressing rod, wherein a cylinder barrel of the air cylinder is connected onto the base through a supporting arm, an output shaft of the air cylinder is connected with the fixed arm in a rotating mode through a first connecting rod, the output shaft of the air cylinder is connected with the middle of the pressing rod in a rotating mode through a second connecting rod, one end of the pressing rod is connected with the fixed arm in a rotating mode, a pressing head is arranged at the other end of the pressing rod, and the pressing head is located above the bearing.

Further, the length of the first connecting rod is greater than that of the second connecting rod.

Furthermore, the number of the supporting arms is two, and the cylinder barrel of the air cylinder is located between the two supporting arms.

Furthermore, the number of the first connecting rods is two, and the two first connecting rods are located on two sides of the fixing arm.

Furthermore, an accommodating groove is formed in the fixing arm, and one end of the pressing rod is hinged in the accommodating groove.

Further, the pressure head is made of rubber.

Furthermore, an included angle between the central axis of the air cylinder and the top surface of the base ranges from 10 degrees to 20 degrees.

The utility model has the beneficial effects that: the clamping mechanism is simple in structure, a triangular stress structure is formed among the first connecting rod, the second connecting rod and the pressing rod, the output shaft of the cylinder transmits driving force to the middle of the pressing rod through the second connecting rod, the pressing rod presses downwards to enable the pressing head to be tightly pressed on the bearing, and the pressing head is matched with the base to clamp the bearing and fix one end of the air expansion shaft. When the physiosis axle is dismantled to needs, only need the output shaft of cylinder toward retracting, make the pressure head loosen the bearing and can dismantle, dismantle and put just swift, improve production efficiency.

Drawings

FIG. 1 is a side cross-sectional view of an embodiment of the present invention;

FIG. 2 is a top view of an embodiment of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure, 1-machine base, 11-bayonet, 12-fixed arm, 121-accommodating groove, 13-supporting arm, 2-air expansion shaft, 3-bearing, 4-air cylinder, 41-cylinder barrel, 42-output shaft, 5-pressure rod, 6-first connecting rod, 7-second connecting rod and 8-pressure head.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

It should be noted that if the description of "first", "second", etc. is provided in the embodiment of the present invention, the description of "first", "second", etc. is only for descriptive purposes and is not to be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

As shown in fig. 1 to 3, the clamping mechanism provided by the utility model comprises a machine base 1, an air inflation shaft 2 and a pressing unit, wherein the machine base 1 is provided with a bayonet 11, one side of the bayonet 11 is provided with a fixed arm 12, and the fixed arm 12 is used for limiting the movement of one end of a first connecting rod 6 and one end of a pressure rod 5; one end of the air expansion shaft 2 is rotatably arranged in the bayonet 11 through the bearing 3, and one end of the air expansion shaft 2 can be hung in the bayonet 11, so that the air expansion shaft 2 is convenient to mount and dismount; the pressing unit comprises an air cylinder 4 and a pressing rod 5, a cylinder 41 of the air cylinder 4 is fixedly connected onto the machine base 1 through two supporting arms 13, and the cylinder 41 of the air cylinder 4 is positioned between the two supporting arms 13. It should be noted that the fixed arm 12 is also located between the two support arms 13. The output shaft 42 of the cylinder 4 is hinged with the fixed arm 12 through a first connecting rod 6, the first connecting rod 6 is used for limiting the expansion range of the output shaft 42 of the cylinder 4, the number of the first connecting rods 6 is preferably two, and the two first connecting rods 6 are positioned at two sides of the fixed arm 12. Compare and only set up a first connecting rod 6, set up two first connecting rods 6 and can play atress symmetry and stability. An output shaft 42 of the air cylinder 4 is hinged with the middle of the pressure lever 5 through a second connecting rod 7, the length of the first connecting rod 6 is larger than that of the second connecting rod 7, one end of the pressure lever 5 is hinged with the fixed arm 12, the other end of the pressure lever 5 is provided with a pressure head 8, and the pressure head 8 is positioned above the bearing 3. Note that the ram 8 is perpendicular to the plunger 5.

After one end of the air expansion shaft 2 is rotatably arranged in the bayonet 11 through the bearing 3, when the air cylinder 4 is driven, the cylinder barrel 41 of the air cylinder 4 is fixed between the two supporting arms 13 and is kept still. The output shaft 42 of the cylinder 4 pushes forwards, one end of the first connecting rod 6 rotates along with the movement of the output shaft 42 of the cylinder 4, a triangular stress structure is formed among the first connecting rod 6, the second connecting rod 7 and the pressure lever 5, the output shaft 42 of the cylinder 4 transmits driving force to the middle part of the pressure lever 5 through the second connecting rod 7, as one end of the pressure lever 5 is hinged with the fixed arm 12, the other end of the pressure lever 5 can be pressed downwards, so that the pressure head 8 is pressed on the bearing 3, and the pressure head 8 is matched with the base 1 to clamp the bearing 3 and fix one end of the air expansion shaft 2. When the physiosis axle 2 is dismantled to needs, only need the output shaft 42 of cylinder 4 toward retracting, make pressure head 8 loosen bearing 3 and can dismantle, simple structure, it is just swift to dismantle, improves production efficiency.

Further, compare in hinging the one end of depression bar 5 in one side of fixed arm 12, in this embodiment, seted up holding tank 121 on the fixed arm 12, the one end of depression bar 5 articulates in holding tank 121 for depression bar 5 receives the effort that comes from second connecting rod 7 and can not be partial to one side.

In this embodiment, the pressure head 8 is preferably made of rubber, and since the bearing 3 is generally made of metal, the friction force between the pressure head 8 made of rubber and the bearing 3 is larger, and a buffering effect can be achieved.

In addition, in the embodiment, an included angle between the central axis of the air cylinder 4 and the top surface of the base 1 is 10-20 degrees, and the output shaft 42 of the air cylinder 4 is matched with the first connecting rod 6 and the second connecting rod 7, so that the pressing rod 5 can be better pushed to press downwards.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.

Claims

1. A clamping mechanism, characterized by: comprises that

The device comprises a base (1), wherein the base (1) is provided with a bayonet (11), and one side of the bayonet (11) is provided with a fixed arm (12);

one end of the inflatable shaft (2) is rotatably arranged in the bayonet (11) through a bearing (3);

compress tightly the unit, including cylinder (4) and depression bar (5), cylinder (41) of cylinder (4) are connected through support arm (13) on frame (1), output shaft (42) of cylinder (4) are rotated with fixed arm (12) through first connecting rod (6) and are connected, and output shaft (42) of cylinder (4) are rotated through the middle part of second connecting rod (7) with depression bar (5) and are connected, the one end and the fixed arm (12) of depression bar (5) are rotated and are connected, and the other end of depression bar (5) is equipped with pressure head (8), pressure head (8) are located bearing (3) top.

2. A clamping mechanism as claimed in claim 1, wherein: the length of the first connecting rod (6) is larger than that of the second connecting rod (7).

3. A clamping mechanism as claimed in claim 1, wherein: the number of the supporting arms (13) is two, and the cylinder barrel (41) of the air cylinder (4) is located between the two supporting arms (13).

4. A clamping mechanism as claimed in claim 1, wherein: the number of the first connecting rods (6) is two, and the two first connecting rods (6) are located on two sides of the fixed arm (12).

5. A clamping mechanism according to claim 4, wherein: an accommodating groove (121) is formed in the fixing arm (12), and one end of the pressing rod (5) is hinged in the accommodating groove (121).

6. A clamping mechanism as claimed in claim 1, wherein: the pressure head (8) is made of rubber.

7. A clamping mechanism as claimed in claim 1, wherein: the included angle between the central axis of the air cylinder (4) and the top surface of the base (1) is 10-20 degrees.