CN113021040A

CN113021040A - Clamping mechanism

Info

Publication number: CN113021040A
Application number: CN202110547431.XA
Authority: CN
Inventors: 肖灯亮
Original assignee: Shenzhen Qianghui Precision Equipment Co ltd
Current assignee: Shenzhen Qianghui Precision Equipment Co ltd
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-06-25

Abstract

The invention discloses a clamping mechanism which is used for fixing a platform in a jig, and comprises a fixing component and a clamping component, wherein the fixing component is used for being fixedly connected with the platform; the clamping assembly comprises an outer structure, a piston structure and a locking structure, wherein a cavity used for ventilation is formed in the outer structure, and the piston structure is installed in the cavity and used for driving the locking structure to lock or unlock the fixing assembly.

Description

Clamping mechanism

Technical Field

The invention relates to the technical field of machining, in particular to a clamping mechanism.

Background

In the product processing process, a jig is often required to clamp, and a traditional jig clamps through screws, so that the standby time is long, and the assembly and disassembly efficiency is low.

Disclosure of Invention

The invention provides a clamping mechanism, which can reduce the stand-by time of a machine table and improve the assembly and disassembly efficiency of a jig by controlling a locking structure to clamp or loosen a fixing component connected with a platform through gas pressure.

The invention provides a clamping mechanism for fixing a platform in a jig, which comprises:

the fixing component is used for being fixedly connected with the platform;

the clamping assembly comprises an external structure, a piston structure and a locking structure, wherein the external structure is provided with a cavity for ventilation, and the piston structure is arranged in the cavity and used for driving the locking structure to lock or unlock the fixing assembly.

In the clamping mechanism according to an embodiment of the present invention, the piston structure includes a piston and a movable ring, a piston fixing groove is formed at the bottom of the cavity, the piston is fixed on the piston fixing groove, and the movable ring is sleeved on the outer side of the piston, so that the movable ring can control the locking structure to clamp the fixing assembly under the gas pressure.

In the clamping mechanism of an embodiment of the present invention, the fixing assembly includes a fixing plate and a blind rivet connected to the fixing plate, and the locking structure includes a steel ball movably mounted between the piston and the external structure.

In the clamping mechanism according to an embodiment of the present invention, an annular groove is formed in an outer side of the blind rivet, a first inclined surface and a second inclined surface are respectively formed at an upper end and a lower end of the annular groove, and an inclination angle of the first inclined surface is greater than an inclination angle of the second inclined surface.

In the clamping mechanism of one embodiment of the invention, the piston is provided with a blind rivet through hole, and the shape and the size of the blind rivet are matched with those of the blind rivet through hole;

the tail end of the blind rivet is in fillet transition, and the opening of the rivet penetrating hole is in chamfer transition.

In the clamping mechanism of an embodiment of the present invention, the external structure includes an outer ring main body and a cover plate, the cover plate is mounted on the open end of the outer ring main body and surrounds the piston to form a movable cavity, and the movable ring is movably mounted in the movable cavity.

In the clamping mechanism according to an embodiment of the present invention, the cover plate is provided with a first movable groove, the piston is provided with a second movable groove, and the steel ball is movably mounted between the first movable groove and the second movable groove.

In the clamping mechanism according to an embodiment of the present invention, an ejection ring is disposed at an upper end of the movable ring, an inner diameter of the ejection ring is smaller than an inner diameter of a lower end of the movable ring, and the inner diameter of the lower end of the movable ring is adapted to an outer diameter of the piston.

In the clamping mechanism according to an embodiment of the present invention, an air inlet groove is provided on the movable ring, and a first seal ring and a second seal ring are respectively installed at two ends of the air inlet groove, and are used for maintaining the gas pressure in the air inlet groove.

In the clamping mechanism according to an embodiment of the present invention, the piston structure further includes an elastic member, the movable ring is provided with an installation groove, the elastic member is installed in the installation groove, and one end of the elastic member extending out of the installation groove abuts against the external structure.

The technical scheme provided by the embodiment of the application can have the following beneficial effects: the application designs a clamping mechanism, including fixed subassembly and clamping component, fixed subassembly be used for with platform fixed connection for the platform can be installed and removed fast through fixed subassembly and clamping component's cooperation realization, and wherein, fixed subassembly and clamping component's cooperation is through the clamp of gas pressure control locking structure or unclamp, so not only can reduce the stand-by time of board, has also improved the efficiency of installing and removing of tool moreover.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a clamping mechanism according to an embodiment of the present invention;

FIG. 2 is a cross-sectional schematic view of the clamping mechanism of FIG. 1;

FIG. 3 is an exploded schematic view of the clamping mechanism of FIG. 1;

FIG. 4 is an exploded view of the securing assembly of FIG. 1;

FIG. 5 is a schematic structural view of the fixing plate of FIG. 1;

FIG. 6 is a schematic structural view of the pull stud of FIG. 1;

FIG. 7 is an exploded schematic view of the clamping assembly of FIG. 1;

FIG. 8 is a schematic structural view of the outer ring body of FIG. 1;

FIG. 9 is a partial block diagram of the external structure of FIG. 1;

FIG. 10 is a schematic view of the cover plate of FIG. 1 at another angle;

FIG. 11 is a partial block diagram of the piston structure of FIG. 1;

FIG. 12 is a schematic cross-sectional view of the movable ring of FIG. 1;

FIG. 13 is a partial block diagram of the piston structure of FIG. 1;

FIG. 14 is a schematic structural view of the piston of FIG. 1;

FIG. 15 is a schematic view of the piston of FIG. 1 at another angle;

FIG. 16 is a schematic cross-sectional view of the piston of FIG. 1;

FIG. 17 is a cross-sectional schematic view of the clamping mechanism of FIG. 1;

FIG. 18 is a schematic cross-sectional view of the clamping mechanism of FIG. 1 in one of its states;

fig. 19 is a cross-sectional schematic view of the clamping mechanism of fig. 1 in another state.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

As shown in fig. 1 to 19, the present application provides a clamping mechanism for fixing a platform in a jig, which includes a fixing component 200 and a clamping component 100, wherein the fixing component 200 is used for being fixedly connected with the platform, and the clamping component 100 is fixed on a machine platform, so that the platform can be quickly assembled and disassembled by the cooperation of the fixing component 200 and the clamping component 100, thereby reducing the stand-by time of the machine platform and improving the assembling and disassembling efficiency of the jig.

In the present embodiment, the clamping assembly 100 includes an outer structure 30, a piston structure 40 and a locking structure, wherein the outer structure 30 is formed with a cavity 311 for ventilation, the piston structure 40 is installed in the cavity 311, and a ventilation device is connected to the outer side of the outer structure 30 for driving the piston structure 40 to move along the axial direction of the outer structure 30 so as to drive the locking structure to lock or unlock the fixing assembly 200, thereby realizing the quick assembly and disassembly of the platform in the jig.

After the technical scheme is adopted, because the traditional jig is manually screwed to clamp and fix, the piston structure 40 moves up and down in a pneumatic mode to drive the locking structure to lock or unlock the fixed assembly 200, so that the loosening or clamping function of the upper platform of the fixed assembly 200 is realized, the stand-by time of the machine table is shortened, and the assembly and disassembly efficiency of the jig is also improved.

In an alternative embodiment, the outer side of the outer structure 30 is provided with a first air inlet hole and a second air inlet hole, the first air inlet hole and the second air inlet hole are respectively connected with a first joint 400 and a second joint 500, and the first joint 400 and the second joint 500 are both in an L-shaped structure and are used for being connected with an air breather, so that the air breather can drive the piston structure 40 to move along the axial direction of the outer structure 30 by air entering the first joint 400 and the second joint 500.

In an alternative embodiment, the piston structure 40 includes a piston 41 and a movable ring 42, wherein the bottom of the cavity 311 is provided with a piston fixing groove 312, the piston 41 is fixed on the piston fixing groove 312, and the movable ring 42 is sleeved on the outer side of the piston 41, so that the movable ring 42 can control the locking structure to clamp the fixing assembly 200 under the pressure of gas.

Illustratively, the upper end of the movable ring 42 is provided with an ejection structure, the ejection structure is used for being matched with the fixed component 200, when gas enters the cavity 311 through the first connector 400 or the second connector 500, the movable ring 42 moves along the axial direction of the piston 41 under the gas pressure, so that the ejection structure on the movable ring 42 can drive the fixed structure to clamp or release the fixed component 200, and the rapid assembly and disassembly of the platform can be realized.

In an alternative embodiment, the fastening assembly 200 includes a fastening plate 10 and a pull stud 20, the pull stud 20 being attached to the fastening plate 10. In this embodiment, the locking structure includes steel balls 50, and the steel balls 50 are movably mounted between the piston 41 and the outer structure 30, so that the ejection structure on the movable ring 42 can drive the steel balls 50 to fix the blind rivet 20 during the movement of the movable ring 42.

Illustratively, the fastening plate 10 has a plate-like configuration with a platform mounting portion 12 and a blind rivet mounting portion 11 on the end surfaces thereof. The blind rivet installation part 11 is arranged in the middle of the fixing plate 10 and is used for installing the blind rivet 20; the platform mounting part 12 is annularly arranged on the outer side of the blind rivet mounting part 11 and used for fixing the platform.

In the present embodiment, the blind rivet 20 is provided with a blind rivet installation hole 22, and a screw passes through the blind rivet installation hole 22 and then is connected with the blind rivet installation portion 11 by a thread, so as to fix the blind rivet 20.

In an alternative embodiment, the outer side of the blind rivet 20 is provided with an annular groove 21, and the upper end and the lower end of the annular groove 21 are respectively provided with a first inclined surface 211 and a second inclined surface 212; wherein, the inclination angle of the first inclined plane 211 is larger than that of the second inclined plane 212. In the present embodiment, the angle α between the first inclined surface 211 and the end surface of the annular groove 21 is in the range of 165 ° to 175 °, and the angle β between the second inclined surface 212 and the end surface of the annular groove 21 is in the range of 125 ° to 135 °. Preferably, the included angle α between the first inclined surface 211 and the end surface of the annular groove 21 is 170 °, and the included angle β between the second inclined surface 212 and the end surface of the annular groove 21 is 128 °, so that the steel ball 50 can be pressed onto the annular groove 21 from the first inclined surface 211 or the second inclined surface 212, and the fixing of the fixing assembly 200 is realized.

Because the included angle α between the first inclined surface 211 and the annular groove 21 is 170 °, and the included angle β between the second inclined surface 212 and the annular groove 21 is 128 °, when the fixing plate 10 is just placed in the clamping assembly 100, the movable ring 42 can drive the steel ball 50 to slowly extrude the first inclined surface 211, and when the fixing plate 10 is taken out from the clamping assembly 100, because the inclined angle of the first inclined surface 211 is not too large, the steel ball 50 is quickly separated from the blind rivet 20 through the first inclined surface 211, thereby realizing the detachment of the fixing plate 10 from the clamping assembly 100. The second inclined surface 212 is relatively shaken, firstly, to prevent the steel ball 50 from continuously moving from the annular groove 21 to the direction of the second inclined surface 212, and secondly, the steel ball 50 of the second inclined surface 212 can be quickly extruded into the annular groove 21, so that the steel ball 50 can fall into the annular groove 21, and the connection stability of the fixing assembly 200 and the clamping assembly 100 is ensured.

In an alternative embodiment, the piston 41 is provided with a blind rivet through hole 411, and the shape and size of the blind rivet through hole 411 are matched with the shape and size of the blind rivet 20, so that the blind rivet 20 can be inserted into the blind rivet through hole 411 during the connection process between the fixing assembly 200 and the clamping assembly 100.

In this embodiment, the terminal fillet transition that adopts of blind rivet 20, the opening part of nail wearing hole 411 adopts the chamfer transition, plays the guide effect for blind rivet 20 can wear to establish fast in blind rivet wearing hole 411.

In an alternative embodiment, the outer structure 30 includes an outer ring body 31 and a cover plate 32, the cover plate 32 is mounted on the open end of the outer ring body 31 and encloses a movable cavity with the piston 41, the movable ring 42 is movably mounted in the movable cavity, and the steel balls 50 are disposed between the cover plate 32 and the piston 41, i.e., on the outer side of the movable cavity, so that the movable ring 42 can push the steel balls 50 to move toward the outside of the movable cavity when moving axially along the piston 41.

In an alternative embodiment, the cover plate 32 is provided with a first movable groove 324, the piston 41 is provided with a second movable groove 414, the inner side of the second movable groove 414 is communicated with the outside, and the steel ball 50 is movably mounted between the first movable groove 324 and the second movable groove 414, so that the steel ball 50 can move towards the inner side of the piston 41 under the action of the movable ring 42, and the blind rivet 20 is locked.

Illustratively, the cover plate 32 is provided with a cover plate mounting portion 321, a cover plate first protrusion 322 and a cover plate second protrusion 323, the cover plate first protrusion 322 and the cover plate second protrusion 323 form part of the movable space of the movable ring 42, the first movable groove 324 is provided on the end surface of the cover plate second protrusion 323, the cover plate first protrusion 322 cooperates with the inner side of the cavity 311 to form a positioning function, and the cover plate 32 is mounted on the body screw hole 313 of the outer ring body 31 through the cover plate mounting portion 321.

In an alternative embodiment, the ejecting structure is an ejecting ring 423 disposed at the upper end of the movable ring 42, the inner diameter of the ejecting ring 423 is smaller than the inner diameter of the lower end of the movable ring 42, and the inner diameter of the lower end of the movable ring 42 is matched with the outer diameter of the piston 41.

Illustratively, the movable ring 42 has an inner cavity structure 422, the inner diameter of the inner cavity structure 422 is matched with the outer diameter of the piston 41, and the ejection ring 423 is disposed at the upper end of the inner cavity structure 422, so that when the movable ring 42 moves along the axial direction of the piston 41 through the inner cavity structure 422, the ejection ring 423 can drive the steel balls 50 to move towards the central axis of the piston 41, thereby locking the blind rivet 20.

In an alternative embodiment, the cover plate 32 is provided with a step pin at one end facing the fixing plate 10, and the fixing plate 10 is provided with a pin hole, so that the fixing plate 10 can realize a quick positioning function through the matching connection of the step pin and the pin hole.

In an alternative embodiment, the piston structure 40 further includes a seal assembly 41, and the seal assembly 44 includes a first seal ring 441 and a second seal ring 442. The movable ring 42 is provided with an air inlet groove 421, two sides of the air inlet groove are respectively provided with a first sealing groove 425 and a second sealing groove 426, and a first sealing ring 441 and a second sealing ring 442 are correspondingly installed in the first sealing groove 425 and the second sealing groove 426 to maintain the gas pressure in the air inlet groove 421.

In an alternative embodiment, the piston structure 40 further comprises an elastic member 43, wherein the movable ring 42 is provided with a mounting groove 424, the elastic member 43 is mounted in the mounting groove 424, and one end of the elastic member 43 extending out of the mounting groove 424 abuts against the outer structure 30, so that the movable ring 42 is always kept in a state that the ejection ring 423 drives the steel ball 50 to lock the blind rivet 20.

In this embodiment, the first joint 400 is communicated with the air inlet groove 421, and the second joint 500 is arranged at the lower end of the movable ring 42, that is, when the first joint 400 is air-inlet, the ejector ring 423 moves downwards to drive the steel ball 50 to lock the blind rivet 20; when the second connector 500 is supplied with air, the ejection ring 423 moves upwards to drive the steel ball 50 to release the blind rivet 20

In an alternative embodiment, the piston structure 40 further includes a sealing sleeve 45, the sealing sleeve 45 includes a third sealing ring 451 and a fourth sealing ring 452, wherein a piston mounting portion 413 is disposed on the piston 41, a screw passes through the outer ring main body 31 and then is connected to the piston mounting portion 413, the third sealing ring 451 is sleeved on the outer side of the piston 41, and the fourth sealing ring 452 is mounted on the third sealing groove 412 to ensure the gas pressure entering the cavity 311 from the second joint 500.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above disclosure provides many different embodiments, or examples, for implementing different features of the invention. The components and arrangements of the specific examples are described above to simplify the present disclosure. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

In the description of the present specification, reference to the description of the terms "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a clamping mechanism for platform in the fixed tool, its characterized in that includes:

the fixing component is used for being fixedly connected with the platform;

2. The clamping mechanism as recited in claim 1, wherein the piston structure comprises a piston and a movable ring, a piston fixing groove is formed in the bottom of the cavity, the piston is fixed on the piston fixing groove, and the movable ring is sleeved on the outer side of the piston, so that the movable ring can control the locking structure to clamp the fixed component under the pressure of gas.

3. The clamping mechanism as recited in claim 2, wherein said stationary assembly comprises a stationary plate and a blind rivet attached to said stationary plate, and said locking structure comprises a steel ball movably mounted between said piston and an external structure.

4. The clamping mechanism as claimed in claim 3, wherein an annular groove is formed on the outer side of the blind rivet, a first inclined surface and a second inclined surface are respectively formed at the upper end and the lower end of the annular groove, and the inclination angle of the first inclined surface is larger than that of the second inclined surface.

5. The clamping mechanism as claimed in claim 3, wherein the piston is provided with a blind rivet through hole, and the shape and size of the blind rivet are matched with those of the blind rivet through hole;

6. The clamping mechanism as recited in claim 3, wherein said outer structure includes an outer ring body and a cover plate mounted on an open end of said outer ring body and enclosing a movable cavity with said piston, said movable ring being movably mounted in said movable cavity.

7. The clamping mechanism as claimed in claim 6, wherein a first movable groove is provided on the cover plate, a second movable groove is provided on the piston, and the steel ball is movably mounted between the first movable groove and the second movable groove.

8. The clamping mechanism as recited in claim 7, wherein an ejector ring is disposed at an upper end of said movable ring, an inner diameter of said ejector ring is smaller than an inner diameter of a lower end of said movable ring, and said inner diameter of said lower end of said movable ring is adapted to an outer diameter of said piston.

9. The clamping mechanism as claimed in claim 2, wherein the movable ring is provided with an air inlet groove, and a first sealing ring and a second sealing ring are respectively mounted at two ends of the air inlet groove for maintaining the air pressure in the air inlet groove.

10. The clamping mechanism as recited in claim 2, wherein said piston structure further comprises an elastic member, said movable ring is provided with a mounting groove, said elastic member is mounted in said mounting groove, and one end of said elastic member extending out of said mounting groove abuts against said outer structure.