CN213380427U

CN213380427U - Internal tensioning mechanism

Info

Publication number: CN213380427U
Application number: CN202021623208.6U
Authority: CN
Inventors: 林中云
Original assignee: Jiangxi Hengcheng Industrial Co ltd
Current assignee: Jiangxi Hengcheng Industrial Co ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2021-06-08
Anticipated expiration: 2030-08-07

Abstract

The utility model discloses an internal expanding mechanism, including base and square frame body, be equipped with square frame body on the base, horizontal slip is equipped with a left side and rises and tightly rise slider and right side and rise and tightly rise the slider in the square frame body, a left side rises and tightly rise slider and right side and rise and tightly the slider and connect through synchronous link mechanism, one side of base is equipped with the cylinder of the synchronous link mechanism action of drive, and square frame body's top is equipped with and supplies a left side to rise and tightly rise slider and right side and rise and tightly the dodge groove that slider upper portion passed horizontal migration, the utility model discloses simple structure, control are convenient, thereby rise to the left and right sides respectively through cylinder control left side and rise tight slider and right side and tightly the slider and remove the inside both sides of casing and tightly, have reduced the clamping time, have improved work efficiency, rise tight slider cross-section and adopt right-angle trapezoidal structure and increased.

Description

Internal tensioning mechanism

Technical Field

The utility model relates to an internal expanding mechanism.

Background

In the production process of a square fan shell, a clamping mechanism is required to be used for clamping a workpiece when the surface of the shell is modified, an existing clamping mechanism generally adopts an external clamping mode, when the external clamping mode is adopted, an external clamping head is in contact with the surface of the workpiece, the clamping position is required to be replaced during processing, processing cannot be completed at one time, secondly, the shell is easy to deform by adopting the external clamping mode aiming at a thin-wall shell with an opening at one end, and the common external clamping mode cannot meet the requirements, so that an internal tensioning mechanism is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects of the prior art and providing an internal expansion mechanism.

The utility model discloses technical scheme:

the inner tensioning mechanism comprises a base and a square frame body, wherein the square frame body is arranged on the base, a left tensioning slider and a right tensioning slider are arranged in the square frame body in a horizontal sliding mode and connected through a synchronous connecting rod mechanism, an air cylinder for driving the synchronous connecting rod mechanism to act is arranged on one side of the base, and an avoiding groove for allowing the upper portions of the left tensioning slider and the right tensioning slider to pass through horizontal movement is formed in the top of the square frame body.

Preferably, the synchronous link mechanism comprises a Y-shaped connecting rod, a first connecting rod, a V-shaped connecting rod, a second connecting rod and a third connecting rod, the middle of the Y-shaped connecting rod is rotatably arranged on the left side of the inside of the square frame body, the inflection point of the V-shaped connecting rod is rotatably arranged on the right side of the inside of the square frame body, a first supporting arm of the Y-shaped connecting rod is hinged to the left side of the lower portion of the left tensioning slider through the first connecting rod, a third supporting arm of the Y-shaped connecting rod extends out of the square frame body to be hinged to an output shaft of the cylinder, a first rotating arm of the V-shaped connecting rod is hinged to the right side of the lower portion of the right tensioning slider through the second connecting rod, and a second rotating arm of the V-shaped connecting rod.

Preferably, the square frame body consists of two side plates and a top plate, wherein the top plate is provided with an avoidance groove for allowing the upper parts of the left tensioning slide block and the right tensioning slide block to pass through and move horizontally, and the inner sides of the two side plates are symmetrically provided with guide rail grooves; the left tensioning slide block and the right tensioning slide block are identical in structure and are symmetrically arranged, the cross section of the left tensioning slide block is of a right trapezoid structure, the right angle face of the cross section of the left tensioning slide block faces outwards, and guide rails matched with the guide rail grooves are arranged on the front side and the rear side of the bottoms of the left tensioning slide block and the right tensioning slide block in a protruding mode respectively.

Preferably, the lower parts of the outer sides of the left tensioning sliding block and the right tensioning sliding block are respectively provided with a hinge seat, and one ends of the first connecting rod and the second connecting rod are respectively hinged with the corresponding hinge seats.

Preferably, the initial state of the cylinder is an extended state.

The utility model discloses simple structure, control are convenient, thereby it rises to the left and right sides removal respectively to rise to the left and right sides through the tight slider that rises in the cylinder control left side, have reduced the clamping time, have improved work efficiency, rise tight slider cross-section and adopt right trapezoid structure and right angle face to have increased the area of contact with the casing inside wall outwards, work piece non-deformable.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a schematic diagram of the internal structure of the preferred embodiment of the present invention;

FIG. 3 is a schematic view of the sliding of the left tensioning slider and the square frame according to the preferred embodiment of the present invention;

in the figure: the device comprises a base 1, a square frame body 2, a cylinder 3, a Y-shaped connecting rod 4, a left tensioning slider 5, a right tensioning slider 6, a first rotating fulcrum 7, a first connecting rod 8, a V-shaped connecting rod 9, a second rotating fulcrum 10, a second connecting rod 11, a third connecting rod 12, a guide rail groove 13, a guide rail 14, a hinged seat 15, a side plate 21, a top plate 22, a first supporting arm 41, a second supporting arm 42, a third supporting arm 43, a first rotating arm 91 and a second rotating arm 92.

Detailed Description

The present invention can be further described by the following embodiments, however, the scope of the present invention is not limited to the following embodiments.

Example 1: as shown in fig. 1-3, the internal tensioning mechanism includes a base 1 and a square frame 2, the square frame 2 is disposed on the base 1, a left tensioning slider 5 and a right tensioning slider 6 are horizontally disposed in the square frame 2, the left tensioning slider 5 and the right tensioning slider 6 are connected through a synchronous link mechanism, an air cylinder 3 for driving the synchronous link mechanism to move is disposed on one side of the base 1, and an avoiding groove for allowing the upper portions of the left tensioning slider 5 and the right tensioning slider 6 to pass through the horizontal movement is disposed on the top of the square frame 2.

Preferably, the synchronous link mechanism comprises a Y-shaped link 4, a first link 8, a V-shaped link 9, a second link 11 and a third link 12, the middle of the Y-shaped link 4 is rotatably disposed on the left side of the inside of the square frame 2, an inflection point of the V-shaped link 9 is rotatably disposed on the right side of the inside of the square frame 2, a first arm 41 of the Y-shaped link 4 is hinged to the left side of the lower portion of the left tensioning slider 5 through the first link 8, a third arm 43 of the Y-shaped link 4 extends out of the square frame 2 and is hinged to an output shaft of the cylinder 3, a first rotating arm 91 of the V-shaped link 9 is hinged to the right side of the lower portion of the right tensioning slider 6 through the second link 11, and a second rotating arm 92 of the V-shaped link 9 is connected to the second arm 41 of the Y-shaped link 4 through the third link 12.

Preferably, the square frame body 2 is composed of two side plates 21 and a top plate 22, wherein the top plate 22 is provided with an avoidance groove for allowing the upper parts of the left tensioning slide block 5 and the right tensioning slide block 6 to pass through horizontal movement, and the inner sides of the two side plates 21 are symmetrically provided with guide rail grooves 13; the left tensioning slide block 5 and the right tensioning slide block 6 are identical in structure and are symmetrically arranged, the cross section of the left tensioning slide block 5 is of a right trapezoid structure, the right angle face of the cross section of the left tensioning slide block faces outwards, and guide rails 14 matched with the guide rail grooves 13 are arranged on the front side and the rear side of the bottoms of the left tensioning slide block 5 and the right tensioning slide block 6 in an outwards protruding mode respectively.

Preferably, the lower parts of the outer sides of the left tensioning slide block 5 and the right tensioning slide block 6 are respectively provided with a hinge seat 15, and one ends of the first connecting rod 8 and the second connecting rod 11 are respectively hinged with the corresponding hinge seats 15.

Preferably, the initial state of the cylinder 3 is an extended state, that is, the left tensioning slide block 5 and the right tensioning slide block 6 are in a closed state.

The utility model discloses the theory of operation: the square shell is sleeved on the left tensioning slide block 5 and the right tensioning slide block 6, then the cylinder 3 is controlled to contract, the cylinder 3 contracts to drive the Y-shaped connecting rod 4 to rotate anticlockwise around the first rotating fulcrum 7, meanwhile, the first support arm 41 drives the left tensioning slide block 5 to move towards the left side through the first connecting rod 8, the second support arm 42 drives the V-shaped connecting rod 9 to rotate anticlockwise around the second rotating fulcrum 10, the first rotating arm 91 rotates anticlockwise to drive the right tensioning slide block 6 to move towards the right side through the second connecting rod 11, and the left tensioning slide block 5 and the right tensioning slide block 6 respectively move towards the left side and the right side to tension two sides inside the shell.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The internal tensioning mechanism comprises a base (1) and a square frame body (2), and is characterized in that the square frame body (2) is arranged on the base (1), a left tensioning slider (5) and a right tensioning slider (6) are arranged in the square frame body (2) in a horizontal sliding mode, the left tensioning slider (5) and the right tensioning slider (6) are connected through a synchronous connecting rod mechanism, a cylinder (3) for driving the synchronous connecting rod mechanism to move is arranged on one side of the base (1), and an avoiding groove for allowing the left tensioning slider (5) and the right tensioning slider (6) to pass through horizontal movement is formed in the top of the square frame body (2).

2. The internal tensioning mechanism according to claim 1, wherein the synchronous linkage mechanism comprises a Y-shaped connecting rod (4), a first connecting rod (8), a V-shaped connecting rod (9), a second connecting rod (11) and a third connecting rod (12), the middle part of the Y-shaped connecting rod (4) is rotatably arranged at the left side inside the square frame body (2), the inflection point of the V-shaped connecting rod (9) is rotatably arranged at the right side inside the square frame body (2), a first support arm (41) of the Y-shaped connecting rod (4) is hinged with the left side of the lower part of the left tensioning slider (5) through the first connecting rod (8), a third support arm (43) of the Y-shaped connecting rod (4) extends out of the square frame body (2) and is hinged with the output shaft of the air cylinder (3), a first rotating arm (91) of the V-shaped connecting rod (9) is hinged with the right side of the right tensioning slider (6) through the second connecting rod (11), the second rotating arm (92) of the V-shaped connecting rod (9) is connected with the second support arm (42) of the Y-shaped connecting rod (4) through a third connecting rod (12).

3. The internal tensioning mechanism according to claim 1, wherein the square frame body (2) is composed of two side plates (21) and a top plate (22), wherein the top plate (22) is provided with an avoiding groove for the upper parts of the left tensioning slide block (5) and the right tensioning slide block (6) to pass through for horizontal movement, and the inner sides of the two side plates (21) are symmetrically provided with guide rail grooves (13); the left tensioning slide block (5) and the right tensioning slide block (6) are identical in structure and are symmetrically arranged, the cross section of the left tensioning slide block (5) is of a right trapezoid structure, the right angle face of the cross section faces outwards, and guide rails (14) matched with the guide rail grooves (13) are arranged on the front side and the rear side of the bottoms of the left tensioning slide block (5) and the right tensioning slide block (6) in an outwards protruding mode respectively.

4. The internal tensioning mechanism as claimed in claim 1, wherein the lower outer portions of the left tensioning slider (5) and the right tensioning slider (6) are respectively provided with a hinge seat (15), and one end of each of the first connecting rod (8) and the second connecting rod (11) is hinged to the corresponding hinge seat (15).

5. An internal tensioning mechanism according to claim 1, characterized in that the initial state of the cylinder (3) is an extended state.