CN112873091A - Integrated tension and compression lever clamping module, clamping cylinder and clamping device - Google Patents
Integrated tension and compression lever clamping module, clamping cylinder and clamping device Download PDFInfo
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- CN112873091A CN112873091A CN202110085510.3A CN202110085510A CN112873091A CN 112873091 A CN112873091 A CN 112873091A CN 202110085510 A CN202110085510 A CN 202110085510A CN 112873091 A CN112873091 A CN 112873091A
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- 230000006835 compression Effects 0.000 title abstract description 5
- 238000007906 compression Methods 0.000 title abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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Abstract
The invention discloses an integrated tension and compression lever clamping module, a clamping cylinder and a clamping device. The clamping module solves the technical problems that a piston rod of a thrust lever downward-pressing type clamping module is easy to bend and deform due to pressure bearing, the supporting distance is small in the working state, the lateral force and eccentric load resisting capacity is poor, the service life is short and the like, and the hinged support is fixedly arranged on the cylinder body to form an integral structure with the cylinder body, so that the problems that the existing cylinder body of the tension lever downward-pressing type clamping module is inconvenient to install, adjust and use and low in overall technical-economic performance-price ratio due to the fact that the existing cylinder body of the tension lever downward-pressing type clamping module is separated from the hinged support are comprehensively solved.
Description
Technical Field
The invention relates to the technical field of hydraulic pneumatic actuating elements, in particular to an integrated pull-press lever clamping module, a clamping cylinder and a clamping device.
Background
Lever clamping modules are used in a very wide range of applications in the field of manufacturing. According to the working principle, the device can be divided into a push lever reverse downward pressing type and a pull lever downward pressing type. Of these, the former is far more useful than the latter. As the most of the former are integrated structures that the fixed hinged support 2 'and the cylinder body 1' are integrated or fixedly connected, as shown in figure 1, the installation, adjustment and use are very convenient, and the economic index of the comprehensive technology is high. The latter does not find the products of the integrated structure at present, namely the fixed hinge support is not integrated with the cylinder body or fixedly connected on the cylinder body, but arranged outside the cylinder body, so that the installation, adjustment and use are very inconvenient, a user needs to design and manufacture the fixed hinge support by himself, and the comprehensive technical and economic indexes are low.
However, the use of the tension lever push-down clamping module has two technical advantages over the use of a thrust lever reverse push-down clamping module: (1) the piston rod of the pull lever downward pressing type clamping module bears pull force during working and is not easy to generate bending deformation, and the piston rod of the push lever reverse downward pressing type clamping module bears great pressure during working and is easy to generate bending deformation. (2) In the working state, the supporting space S formed by the piston and the piston rod of the pull lever downward pressing type clamping module and the corresponding constraint hole is much larger than the supporting space S' formed by the thrust lever reverse downward pressing type clamping module. Therefore, the tension lever down-pressing type clamping module is high in supporting stability and strong in lateral force and unbalance loading bearing capacity.
Due to the two technical advantages, the service life and the supporting stability of the pull lever downward pressing type clamping module are obviously longer than those of the push lever reverse downward pressing type clamping module.
However, since the fixed hinge support of the pull lever downward-pressing type clamping module is separated from the cylinder body, the installation, adjustment and use are inconvenient, the comprehensive manufacturing cost is high, the period is long, most users can select the push lever reverse downward-pressing type clamping module with an integrated structure, and the service life and the working stability of the pull lever reverse downward-pressing type clamping module are far lower than those of the pull lever downward-pressing type clamping module.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides an integrated pull-press lever clamping module which is characterized in that a hinged support is integrated with a cylinder body and a piston rod bears tension when a workpiece is clamped.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an integrate and draw and press lever clamping module, includes cylinder body, piston rod, hinged-support, lever clamp plate and connecting rod, hinged-support with cylinder body an organic whole set up or set firmly in on the cylinder body, the cylinder body has well cavity, the piston rod can set up with reciprocating sliding in well cavity and partly stretch out in the cavity is outer, lever clamp plate is obtuse angle L type, one end of lever clamp plate articulates on the hinged-support, the both ends of connecting rod respectively with the piston rod with lever clamp plate is articulated mutually, when clamping module presss from both sides tight work piece, the power that the piston rod bore is the pulling force.
Preferably, the clamping module has a clamping state and a loosening state, and when the clamping module is in the clamping state, the distance from the hinged position of the lever pressing plate and the hinged support to the front end face of the cylinder body is smaller than the distance from the hinged position of the lever pressing plate and the connecting rod to the front end face of the cylinder body.
Preferably, the lever pressing plate comprises a clamping end for clamping a workpiece, a supporting end hinged with the hinged support and a force applying end hinged with the connecting rod, and the clamping end and the supporting end are respectively positioned at two opposite sides of the force applying end.
Further, the force application end is positioned at an L-shaped corner of the lever pressing plate.
Preferably, the lever pressing plate comprises a clamping end for clamping a workpiece and a force application end hinged with the connecting rod, the clamping module has a clamping state and a loosening state, and when the clamping module is in the clamping state, the part of the lever pressing plate between the force application end and the clamping end is perpendicular to the axis of the piston rod.
Preferably, the clamping module has a clamping state and a loosening state, and when the clamping module is in the clamping state, a connecting line of the connecting rod and a rotation center of the piston rod, and a connecting line of the connecting rod and a rotation center of the lever pressing plate and an axial line of the piston rod extend in parallel or in a collinear manner.
Preferably, the cylinder body is a cylinder body without a rear end cover and provided with a hollow cavity, the clamping module further comprises a piston fixedly arranged at the rear end of the piston rod, the piston divides the hollow cavity into a thrust actuating cavity and a tension actuating cavity which are mutually isolated, and the piston rod penetrates through the thrust actuating cavity and forwards penetrates out of the cylinder body.
Preferably, the force direction of the clamping module is single-acting or double-acting.
The invention also provides an integrated pull-press lever clamping cylinder which comprises the clamping module and a rear end cover detachably mounted at the rear end part of the cylinder body.
The invention provides an integrated pull-press lever clamping device, which comprises the clamping module and a workbench with a mounting surface, wherein the cylinder body is fixedly mounted on the workbench, and the mounting surface of the workbench is connected with the rear end surface of the cylinder body in a sealing manner.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the integrated tension and compression lever clamping module has a simple structure, solves the technical problems that a piston rod of a thrust lever reverse downward pressing type clamping module is easy to bend and deform due to pressure bearing, has small supporting distance in a working state and poor capability of resisting lateral force and eccentric load, further has short service life and the like, and also comprehensively solves the problems of inconvenient installation, adjustment and use and low cost of the overall technical and economic performance caused by the separation of the existing tension lever downward pressing type clamping module cylinder body and the hinged support because the hinged support is fixedly arranged on the cylinder body to form an integral structure.
Drawings
FIG. 1 is a front view of a prior art thrust lever reverse down clamp;
FIG. 2 is a longitudinal sectional view of the integrated pull-press lever clamping device of the present invention, with the clamping module in a released state;
FIG. 3 is a longitudinal sectional view of the integrated pull-press lever clamping device of the present invention, wherein the clamping module is in a clamping state;
FIG. 4 is one of the top views of the condition of FIG. 3;
fig. 5 is a second plan view of the state of fig. 3.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the specific embodiments.
Example 1
Referring to fig. 2 to 5, the integrated tension and compression lever clamping module of the present invention includes a cylinder body 1, a piston rod 22, a hinge support 3, a lever pressing plate 4 and a connecting rod 5.
The cylinder 1 includes a cylinder 11 and a front end cap 12 located at a front end portion of the cylinder 11. In this embodiment, the cylinder 11 and the front end cap 12 are integrally provided to form the integrated cylinder 1. The cylinder body 1 has no rear end cover.
The barrel 11 has a hollow cavity. The clamping module further comprises a piston 21 fixedly arranged opposite to the piston rod 22, the piston 21 is arranged in the hollow cavity of the cylinder 11 in a sliding fit mode, and the hollow cavity of the cylinder 11 is divided into a pulling force actuating cavity 1a and a pushing force actuating cavity 1b which are isolated from each other by the piston 21. The front end cover 12 is provided with a mounting hole, and the piston rod 22 is disposed in the hollow cavity of the cylinder 11 in a reciprocating sliding manner, passes through the tension actuating cavity 1a, and axially passes through the mounting hole of the front end cover 12 in a sliding fit manner to extend out of the cylinder 1. Namely, the pulling force actuating cavity 1a is a rod cavity, and the pushing force actuating cavity 1b is a rodless cavity.
The cylindrical body 11 is provided with a fluid flow passage or an air flow passage (not shown) extending from an outer contour surface thereof, which may be a rear end surface of the cylindrical body 11 or a lateral surface of the cylindrical body 11, to the tension actuating chamber 1 a.
The hinged support 3 is fixedly arranged on the cylinder body 1 to form an integral structure with the cylinder body 1, so that the clamping module is very convenient to mount, adjust and use.
The hinged support 3 and the cylinder body 1 can be fixedly arranged in a mode that the hinged support 3 and the cylinder body 1 are integrally arranged or fixedly connected together in an assembling mode through a connecting piece.
In this embodiment, the cylinder body 1 has a front end surface, the piston rod 22 extends from the front end surface of the cylinder body 1 to the outside of the cylinder body 1, and the hinged support 3 is fixedly arranged on the front end surface of the cylinder body 1.
The lever pressing plate 4 is of an obtuse-angle L-shaped structure and comprises a clamping end 4a for clamping a workpiece, a supporting end 4b hinged with the hinged support 3 and a force application end 4c hinged with the connecting rod 5. The supporting end 4b of the lever pressing plate 4 is hinged with the hinged support 3 through a first pin 61, one end of the connecting rod 5 is hinged with the force applying end 4b of the lever pressing plate 4 through a second pin 62, and the other end of the connecting rod 5 is hinged with one end of the piston rod 22 positioned outside the cylinder body 1 through a third pin 63.
In this embodiment, the clamping end 4a and the supporting end 4b are respectively located at two opposite sides of the force applying end 4c, the clamping end 4a and the supporting end 4b are respectively located at two opposite ends of the lever pressing plate 4, and the force applying end 4c is located at a corner of the lever pressing plate 4.
The clamping module has a clamping state and a loosening state, and when the clamping module is in the clamping state, the distance from the hinged position of the lever pressing plate 4 and the hinged support 3, namely the position of the first pin shaft 61, to the front end surface of the cylinder body 1 is smaller than the distance from the hinged position of the lever pressing plate 4 and the connecting rod 5, namely the position of the second pin shaft 62, to the front end surface of the cylinder body 1. The arrangement is such that the distance from the first pin shaft 61 to the front end face of the cylinder body 1 is relatively small, so that the structural volume of the hinged support 3 can be designed to be small, and the distance from the center of the hinged support 3 to the front end face of the cylinder body 1 is also small. If the hinged support 3 and the cylinder body 1 are of an integrated structure, the material of the hinged support 3 can be reduced, so that the material, the cost and the processing cost can be saved; if the hinged support 3 and the cylinder body 1 adopt an assembled fixed connection structure, the problem that the hinged support 3 has insufficient rigidity can be avoided.
When the clamping module is in the clamping state, the connecting line of the connecting rod 5 and the rotation center of the piston rod 22, and the connecting line of the connecting rod 5 and the rotation center of the lever pressing plate 4 and the axial line of the piston rod 22 extend in parallel or in a collinear manner, and both are perpendicular to the portion of the lever pressing plate 4 between the force application end 4c and the clamping end 4 a. In this way, the force on the piston rod 22 can act to the greatest extent on the lever pressure plate 4 in the clamped state.
The clamping module has a central plane a in which the axes of the first pin 61 and the second pin 62 are located. The centre of the clamping end 4a may lie in the centre plane a, i.e. the load to which the clamping module is subjected when clamping the workpiece 100 is a positive load, as shown in fig. 4; the center of the clamping end 4a may also be spaced from the center plane a by a distance that the clamping module is subjected to an offset load when clamping the workpiece 100, as shown in fig. 5.
The piston 21 is provided with a first seal 71, and the first seal 71 is used for sealing a gap between the outer surface of the piston 21 and the inner surface of the cylinder 11. The front end cover 12 is provided with a second seal member 72, and the second seal member 72 is used to seal a gap between the outer surface of the piston rod 22 and the inner surface of the front end cover 12.
The distance between the first sealing element 71 and the second sealing element 72 forms a supporting distance S of the clamping module, the supporting distance S gradually increases in the process that the clamping module clamps the workpiece 100, that is, the length of the part, namely the cantilever part, of the piston rod 22 extending out of the cylinder 1 gradually decreases, when the clamping module is in the clamping state, the supporting distance S reaches the maximum, that is, the length of the part, namely the cantilever part, of the piston rod 22 extending out of the cylinder 1 is minimum, and when the clamping module is in the clamping state, the supporting distance S is far greater than the supporting distance S' of the reverse downward pressing type clamping module of the thrust lever, so that the clamping module has higher supporting stability and stronger capability of bearing lateral force and unbalance loading.
The working principle of the clamping module is as follows:
when the clamping module is in the unclamped state, the clamping end 4a is away from the workpiece 100, and an included angle is formed between the connecting rod 5 and the piston rod 22, as shown in fig. 2.
When the workpiece 100 needs to be clamped by the clamping module, after liquid or air is fed into the tension actuating cavity 1a through the liquid flow channel or the air flow channel on the cylinder 11, pressure is generated in the tension actuating cavity 1a, the pressure acts on the piston 21 to push the piston 21 to move backwards along the first direction, and the piston rod 22 is driven to synchronously move backwards along the first direction, so that the distance between the first sealing element 71 and the second sealing element 72, namely the support distance S, is gradually increased; when the piston rod 22 moves in the first direction, i.e., backward, the lever pressing plate 4 is pulled by the connecting rod 5 to rotate counterclockwise about the first pin 61 relative to the hinge support 3, so that the clamping end 4a gradually approaches the workpiece 100.
When the clamping module is in a clamping state, the clamping end 4a is pressed on the workpiece 100 to clamp the workpiece 100, a connecting line of the connecting rod 5 and the rotation center of the piston rod 22 and a connecting line of the connecting rod 5 and the rotation center of the lever pressing plate 4 are parallel to or extend in a collinear manner with the axis of the piston rod 22, the connecting rod 5 and the rotation center of the lever pressing plate 4 are both perpendicular to a part of the lever pressing plate 4 between the force application end 4c and the clamping end 4a, the distance from the hinged position of the lever pressing plate 4 and the hinged support 3 to the front end surface of the cylinder body 1 is smaller than the distance from the hinged position of the lever pressing plate 4 and the connecting rod 5 to the front end surface of the cylinder body 1, and the distance between the first sealing element 71 and the second sealing element.
In the working process of the clamping module, the force borne by the piston rod 22 is tensile force, so that the bending deformation is not easy to generate, and the service life of the piston rod 22 is long; and the supporting distance S of the clamping module is larger in the working state, so that larger lateral force and eccentric load can be borne.
When the workpiece 100 needs to be loosened, pressure is generated in the thrust actuating cavity 1b, the pressure acts on the piston 21, the piston 21 is pushed to move forwards and reset along the second direction, the piston rod 22 is driven to move forwards synchronously along the second direction, the lever pressing plate 4 is pushed by the connecting rod 5 to rotate clockwise around the first pin shaft 61 relative to the hinged support 3, and the clamping end 4a is gradually far away from the workpiece 100 to loosen the workpiece 100.
The acting force direction of the clamping module can be single-acting, namely when the clamping module clamps the workpiece 100, the pulling force acts on liquid inlet or air inlet in the cavity 1a, and when the workpiece 100 is loosened, the pushing force acts on the piston 21 without liquid inlet or air inlet in the cavity 1b, and the force generated by a spring and the like acts on the piston 21, so that the piston 21 moves forwards and resets along the second direction.
The acting force direction of the clamping module can also be double-acting, namely when the clamping module clamps the workpiece 100, the liquid or air is fed into the tension actuating cavity 1 a; when the workpiece 100 is released, the thrust actuating chamber 1b is pressurized by the intake of liquid or air, so that the piston 21 is returned to the forward position in the second direction.
Example 2
Not shown in the figure, an integrate and draw and press lever clamping cylinder includes the clamping module as above, still includes the rear end cap of detachably installing in the rear end of cylinder body 1.
Example 3
An integrated pull-press lever clamping device comprises the clamping module and a workbench 8 with a mounting surface 8a, wherein a cylinder body 1 is fixedly mounted on the workbench 8, and the mounting surface 8a of the workbench 8 is connected with the rear end surface of the cylinder body 1 in a sealing mode.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a draw and press lever clamping module integrates which characterized in that: including cylinder body, piston rod, hinged-support, lever clamp plate and connecting rod, hinged-support with the cylinder body an organic whole set up or set firmly in on the cylinder body, the cylinder body has well cavity, the piston rod can set up with reciprocating sliding in well cavity and partly stretch out in the cavity well outside the cavity, lever clamp plate is obtuse angle L type, one end of lever clamp plate articulates on the hinged-support, the both ends of connecting rod respectively with the piston rod with lever clamp plate is articulated mutually, when clamping module presss from both sides tight work piece, the power that the piston rod bore is the pulling force.
2. The integrated pull-press lever clamping module according to claim 1, wherein: the clamping module has a clamping state and a loosening state, and when the clamping module is in the clamping state, the distance from the hinged position of the lever pressing plate and the hinged support to the front end face of the cylinder body is smaller than the distance from the hinged position of the lever pressing plate and the connecting rod to the front end face of the cylinder body.
3. The integrated pull-press lever clamping module according to claim 1, wherein: the lever pressing plate comprises a clamping end for clamping a workpiece, a supporting end hinged with the hinged support and a force application end hinged with the connecting rod, and the clamping end and the supporting end are respectively positioned on two opposite sides of the force application end.
4. The integrated pull-press lever clamping module according to claim 3, wherein: the force application end is positioned at the L-shaped corner of the lever pressing plate.
5. The integrated pull-press lever clamping module according to claim 1, wherein: the lever pressing plate comprises a clamping end used for clamping a workpiece and a force application end hinged with the connecting rod, the clamping module has a clamping state and a loosening state, and when the clamping module is in the clamping state, the part of the lever pressing plate between the force application end and the clamping end is perpendicular to the axis of the piston rod.
6. The integrated pull-press lever clamping module according to claim 1, wherein: the clamping module has a clamping state and a loosening state, and when the clamping module is in the clamping state, the connecting line of the connecting rod and the rotation center of the piston rod and the connecting line of the connecting rod and the rotation center of the lever pressing plate and the axial lead of the piston rod extend in parallel or in the same line.
7. The integrated pull-press lever clamping module according to claim 1, wherein: the clamping module comprises a cylinder body, a piston and a piston rod, wherein the cylinder body is a cylinder body without a rear end cover and provided with a hollow cavity, the piston is fixedly arranged at the rear end of the piston rod, the hollow cavity is divided into a thrust actuating cavity and a tension actuating cavity which are mutually isolated by the piston, and the piston rod penetrates through the thrust actuating cavity and forwards penetrates out of the cylinder body.
8. The integrated pull-press lever clamping module according to claim 1, wherein: the acting force direction of the clamping module is single-acting or double-acting.
9. The utility model provides a draw and press lever clamping cylinder integrates which characterized in that: comprising a clamping module according to any one of claims 1 to 8, further comprising a rear end cap detachably mounted on the rear end of the cylinder.
10. The utility model provides a draw and press lever clamping device integrates which characterized in that: the clamping module comprises a workbench according to any one of claims 1 to 8, and further comprises a mounting surface, wherein the cylinder body is fixedly mounted on the workbench, and the mounting surface of the workbench is in sealing connection with the rear end surface of the cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110085510.3A CN112873091A (en) | 2021-01-22 | 2021-01-22 | Integrated tension and compression lever clamping module, clamping cylinder and clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110085510.3A CN112873091A (en) | 2021-01-22 | 2021-01-22 | Integrated tension and compression lever clamping module, clamping cylinder and clamping device |
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| Publication Number | Publication Date |
|---|---|
| CN112873091A true CN112873091A (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110085510.3A Pending CN112873091A (en) | 2021-01-22 | 2021-01-22 | Integrated tension and compression lever clamping module, clamping cylinder and clamping device |
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| CN (1) | CN112873091A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113714958A (en) * | 2021-10-09 | 2021-11-30 | 南通芯盟测试研究院运营管理有限公司 | Double-lever probe card clamp |
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| CN103624604A (en) * | 2013-11-19 | 2014-03-12 | 重庆风过旗扬科技发展有限公司 | Double-acting hinge clamping device |
| CN104440296A (en) * | 2014-11-19 | 2015-03-25 | 常州市静远噪声控制材料有限公司 | Rapidly-and-evenly-pressing pressing plate |
| CN105312939A (en) * | 2015-11-16 | 2016-02-10 | 重庆金辰机械制造有限公司 | Clamping tool for machining of semi-automatic compressor rotor blade grooves |
| CN214393911U (en) * | 2021-01-22 | 2021-10-15 | 苏州辛得利机电科技有限公司 | Integrated tension and compression lever clamping module, clamping cylinder and clamping device |
-
2021
- 2021-01-22 CN CN202110085510.3A patent/CN112873091A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201241891Y (en) * | 2008-06-12 | 2009-05-20 | 宁波丰州机械有限公司 | Lever cylinder for fixture |
| CN103624604A (en) * | 2013-11-19 | 2014-03-12 | 重庆风过旗扬科技发展有限公司 | Double-acting hinge clamping device |
| CN104440296A (en) * | 2014-11-19 | 2015-03-25 | 常州市静远噪声控制材料有限公司 | Rapidly-and-evenly-pressing pressing plate |
| CN105312939A (en) * | 2015-11-16 | 2016-02-10 | 重庆金辰机械制造有限公司 | Clamping tool for machining of semi-automatic compressor rotor blade grooves |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113714958A (en) * | 2021-10-09 | 2021-11-30 | 南通芯盟测试研究院运营管理有限公司 | Double-lever probe card clamp |
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