CN101890684A - Tensioning cylinder - Google Patents
Tensioning cylinder Download PDFInfo
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- CN101890684A CN101890684A CN2010102174226A CN201010217422A CN101890684A CN 101890684 A CN101890684 A CN 101890684A CN 2010102174226 A CN2010102174226 A CN 2010102174226A CN 201010217422 A CN201010217422 A CN 201010217422A CN 101890684 A CN101890684 A CN 101890684A
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- rubber ring
- hole
- main body
- gas
- piston rod
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Abstract
The invention discloses a tensioning cylinder, which comprises a cylinder main body, a piston and a rubber ring, wherein according to the cylinder main body, the interior is provided with an air cavity, the side wall is provided with two air holes, the rear end is in closed connection with a rear end cover and the front end is provided with a through hole; the piston is arranged in the cylinder main body and consists of a piston head and upper and lower piston rods, the piston head is positioned between the upper and lower air holes, the upper piston rod extends out of the through hole of the rear end cover, and the lower piston rod extends out of the through hole at the front end of the cylinder main body; the rubber ring is positioned in front of the cylinder main body and arranged at the front end of the lower piston rod in an encircling mode, and the front end of the rubber ring is provided with a rubber ring limit head which is connected with the lower piston rod; and sealing rings are arranged at the through hole of the rear end cover, the periphery of the piston head and the through hole at the front end of the cylinder main body to prevent air leakage. The tensing cylinder for moving or sealing pore parts/products is convenient and quick, and does not abrade the parts/products.
Description
Technical field
The present invention relates to pneumatic means, be specifically related to a kind of tensioning cylinder.
Background technology
The pneumatic element that is used for pickup at present mainly is gas pawl cylinder and vacuum cup.Usually, the side that the gas pawl generally can only clamping parts/product forms friction between the surface of gas pawl and parts/product, overcome the gravity of parts/product, makes parts/product be held carrying.But just because of the existence of frictional force, the surface of parts/product easily is worn, and destroys the integrality of parts/product.Especially for fine finishining, parts/product that the surface is worn is difficult to satisfy the requirement of following process assembling, causes the final products of follow-up assembling defective.For the bigger parts/product of specification, often require the gas pawl bigger, and will special-purpose holding workpiece be installed on the gas pawl and can use, cost is uprised.
Sucker forms disc-shape by rubber etc., adopt sucker to draw parts/product, must the adapted vacuum generator or vavuum pump could use, sucker is pressed against the surface of parts/product, the space that parts/sucker and product surface form is vacuum state substantially, sucker adsorbs with the surface of parts/product and contacts, and parts/product firmly is adsorbed on the sucker, finishes the pickup process.Adopt sucker to draw parts/product, requiring parts/product surface must be that opposed flattened is smooth and parts/product weight is light, for parts/product with irregular surface, be difficult to tight the contact between the surface of sucker and parts/product, easily leave the gap, be difficult to form vacuum, parts/product can not firmly be adsorbed on the sucker, easily drops.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of and pipette porose parts/product, and the tensioning cylinder of the parts/product that do not wear and tear.
Tensioning cylinder of the present invention comprises:
Cylinder main body, described cylinder main body inside is provided with air cavity, upper and lower two pores are set on the sidewall, described pore communicates with described air cavity, leading section is provided with a through hole, and described through hole is provided with the cylinder main body sealing ring, and rearward end is connected with a rear end cap is airtight, and also be provided with a through hole on the described rear end cap, described through hole is provided with the rear end cap sealing ring;
Piston, be arranged in the described cylinder main body, constitute to the upper and lower two-piston bar that extend both sides respectively by piston head with from piston head, wherein, described piston head is between upper and lower two pores, described air cavity is separated into upper and lower two air cavitys, and the piston head sealing ring is set on the periphery of described piston head, contact with the wall of described air cavity, so that described piston head is in the process of moving up and down, gas in the described upper gas chamber can not be leaked in the described lower air chamber, and the gas in the described lower air chamber can not be leaked in the described upper gas chamber; Described upper piston rod stretches out from the through hole of described rear end cap, and outer wall contacts with described rear end cap sealing ring, so that described upper piston rod is when moving up and down in the through hole of described rear end cap, the gas in the described upper gas chamber can not be revealed from described rear end cap; Described lower piston rod stretches out from the through hole of described cylinder main body leading section, outer wall contacts with described cylinder main body sealing ring, so that described lower piston rod is when moving up and down in the through hole of described cylinder main body leading section, the gas in the described lower air chamber can not be revealed from the leading section of described cylinder main body;
Rubber ring is in described cylinder main body the place ahead, around the front end that is arranged on described lower piston rod, and at described rubber ring front end the spacing head of one rubber ring is set, and is connected with described lower piston rod.
According to the present invention, described rearward end was meant with airtight connection of a rear end cap, rearward end at described cylinder main body is provided with pin-and-hole, is connected with described rear end cap is airtight by alignment pin, and between the rearward end of described cylinder main body and described rear end cap a sealing ring is set; Or the rearward end of described cylinder main body is provided with screw thread, and described rear end cap also is provided with screw thread, and two threads engaged make the rearward end of cylinder main body be connected with rear end cap is airtight.
According to the present invention, the spacing head of described rubber ring is connected with described lower piston rod and is meant, in the described lower piston rod pin-and-hole is set, on the spacing head of described rubber ring alignment pin is set, described alignment pin matches with described pin-and-hole the spacing head of described rubber ring is connected with described lower piston rod; Or in the described lower piston rod screw is set, and on the spacing head of described rubber ring screw rod being set, described screw rod matches with described screw the spacing head of described rubber ring is connected with described lower piston rod.
According to the present invention, the spacing head of described cylinder main body, described rear end cap, described piston and described rubber ring is made by aluminium, iron or stainless steel.
Further, spacing bosom of the described piston of tensioning cylinder of the present invention and described rubber ring can also be provided with a through hole, is used for through-flow body.
According to the present invention, the wall thickness of described rubber ring is 3～100mm.
Tensioning cylinder of the present invention not only is used to pipette porose parts/product, can also be used to seal porose parts/product.
Use tensioning cylinder of the present invention, at first described rubber ring is placed in the hole of porose parts/product; Feed gas in the pore down to described then, gas enters described lower air chamber, under air pressure promotes, described piston moves upward, and the gas in the described upper gas chamber is discharged by the described pore of going up, and described lower piston rod drives the spacing head of described rubber ring and moves upward, described rubber ring is pushed, described rubber ring is outwards expanded, push the hole of described parts/product, pipette or seal porose parts/product.Feed gas to the described pore of going up at last, gas enters described upper gas chamber, under air pressure promotes, described piston moves downward, gas in the described lower air chamber is discharged by described pore down, described lower piston rod drives the spacing head of described rubber ring and moves downward, and described rubber ring returns to original state, takes out in the hole.
Spacing bosom of the described piston of tensioning cylinder of the present invention and described rubber ring is provided with a through hole, in use, described rubber ring placed in the hole of porose parts/product; Feed gas in the pore down to described, gas enters described lower air chamber, under air pressure promotes, described piston moves upward, gas in the described upper gas chamber is discharged by the described pore of going up, and described lower piston rod drives the spacing head of described rubber ring and moves upward, and described rubber ring is pushed, described rubber ring is outwards expanded, push the hole of described parts/product; Feed fluid to described piston and the inner through hole of the spacing head of rubber ring, after fluid feeds and finishes, with described through hole sealing; Releasing is to the sealing of described through hole; Feed gas to the described pore of going up, gas enters described upper gas chamber, under air pressure promotes, described piston moves downward, gas in the described lower air chamber is discharged by described pore down, described lower piston rod drives the spacing head of described rubber ring and moves downward, and described rubber ring returns to original state, takes out in the hole.
Tensioning cylinder of the present invention utilizes moving up of piston, drives rubber ring and outwards expands, the hole of parts/product is pushed, thus can mobile easily parts/product, and in extrusion process, also circular hole is formed sealing.Tensioning cylinder of the present invention can pipette the porose parts/product of surface imperfection easily, and the parts/product that can not wear and tear.
Description of drawings
Fig. 1 is the cross-sectional view of tensioning cylinder.
Fig. 2 is the view of tensioning cylinder use.
The specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described.Should be understood that following examples only are used to the present invention to be described but not to be used to limits the scope of the invention.
The structure of embodiment 1 tensioning cylinder
As shown in Figure 1, tensioning cylinder of the present invention comprises:
Cylinder main body 1, inside are provided with air cavity 10, and upper and lower two pores 11,12 are set on the sidewall of cylinder main body 1, communicate with air cavity 10, and the leading section of cylinder main body 1 has a through hole 13, and through hole 13 places are provided with cylinder main body sealing ring 14; Rearward end at cylinder main body 1 is provided with pin-and-hole 17, by alignment pin 18 and 2 airtight connections an of rear end cap, and between the rearward end of cylinder main body 1 and rear end cap 2 sealing ring 19 is set, described rear end cap 2 also is provided with through hole 1, and rear end cap sealing ring 22 is set in the through hole 21;
Wherein, described cylinder main body 1, described rear end cap 2, spacing 40 of described piston 3 and described rubber ring are metal material, adopt materials such as common metal such as aluminium, iron, stainless steel to make.The wall thickness of described rubber ring 4 is 100mm.Spacing 40 of described rubber ring links to each other with lower piston rod 32, is meant that lower piston rod 32 inside are provided with pin-and-hole 34, on spacing 40 of the rubber ring alignment pin 41 is set, and alignment pin 41 matches with pin-and-hole 34 spacing 40 of rubber ring fixedlyed connected with lower piston rod 32.
The structure of embodiment 2 tensioning cylinders
Present embodiment is substantially the same manner as Example 1, and difference is that described upper and lower two pores 11,12 places are provided with snap joint 110,120, connects gas piping.The wall thickness of described rubber ring 4 is 10mm.
The structure of embodiment 3 tensioning cylinders
Present embodiment is substantially the same manner as Example 1, difference is that the rearward end of described cylinder main body 1 is provided with screw thread, and described rear end cap 2 also is provided with screw thread, two threads engaged on rearward end and the rear end cap make the rearward end and 2 airtight connections of rear end cap of cylinder main body 1.The wall thickness of described rubber ring 4 is 50mm.
The structure of embodiment 4 tensioning cylinders
Present embodiment is substantially the same manner as Example 1, and difference only is that the wall thickness of described rubber ring 4 is 3mm.
The application of embodiment 5 tensioning cylinders
When using tensioning cylinder pickup of the present invention, rubber ring 4 is placed in the hole of porose parts/product, feed gas in the pore 12 downwards, described gas is selected from compressed air, helium, conventional gas such as nitrogen, air pressure is controlled at 0.4-1Mpa, gas enters lower air chamber 16, under air pressure promoted, piston 3 moved upward, and the gas in the upper gas chamber 15 is discharged by last pore 11, lower piston rod 32 drives spacing 10 of rubber ring and moves upward, rubber ring 4 is pushed, rubber ring 4 is outwards expanded, as shown in Figure 2, the hole of extrusion parts/product can mobile easily parts/product.After parts/product is placed on correct position, upwards pore 11 ventilations, air pressure is controlled at 0.4-1Mpa, gas enters upper gas chamber 15, and under air pressure promoted, piston 3 moved downward, gas in the lower air chamber 16 is by pore 12 discharges down, lower piston rod 32 drives spacing 10 of rubber ring and moves downward, and rubber ring 4 returns to original state, takes out getting final product in the hole.
Tensioning cylinder of the present invention can pipette the porose parts/product of surface imperfection easily, and the parts/product that can not wear and tear.
The application of embodiment 6 tensioning cylinders
The invention people is the deficiency that overcomes the pneumatic element that is used for pickup of prior art, developed tensioning cylinder of the present invention, utilize moving up of piston, driving rubber ring outwards expands, hole to parts/product is pushed, thereby can mobile easily parts/product, in extrusion process, formation is to the sealing of circular hole, and therefore tensioning cylinder of the present invention also can be used for the sealing to product.Rubber ring 4 is placed in the circular hole of parts/product, feed gas in the pore 12 downwards, described gas is selected from conventional gas such as compressed air, helium, nitrogen, air pressure is controlled at 0.4-1Mpa, gas enters lower air chamber 16, and under air pressure promoted, piston 3 moved upward, gas in the upper gas chamber 15 is discharged by last pore 11, lower piston rod 32 drives spacing 10 of rubber ring and moves upward, and rubber ring 4 is pushed, and rubber ring 4 is outwards expanded, the circular hole of extrusion parts/product is realized sealing.When not needing to seal, upwards pore 11 ventilations, air pressure is controlled at 0.4-1Mpa, gas enters upper gas chamber 15, and under air pressure promoted, piston 3 moved downward, gas in the lower air chamber 16 is by pore 12 discharges down, lower piston rod 32 drives spacing 10 of rubber ring and moves downward, and rubber ring 4 returns to original state, takes out getting final product in the circular hole.
At present, when needs seal product, usually consider to seal installation, in operating process, need seal head could be inserted and extract with great strength very with the method for extruding by force, very inconvenient.And use tensioning cylinder of the present invention, by the mobile drive rubber ring expansion of piston rod, easily realize sealing, when not needing to seal, also be the mobile drive rubber ring reinstatement by piston rod, the strength that need not cost a lot of money can be taken out rubber ring, and is convenient and swift.
The architecture advances and the application of embodiment 7 tensioning cylinders
At embodiment
The basis that tensioning cylinder successfully is used for the product sealing, structure to the tensioning cylinder of embodiment 1 is improved, at piston and spacing bosom of rubber ring one through hole is set, can enlarges the range of application of tensioning cylinder by through hole to feeding fluids (gas or liquid) such as products.In a preferred embodiment, above-mentioned tensioning cylinder is used for the products air tightness testing process.Rubber ring 4 is placed in the circular hole of product, feed gas in the pore 12 downwards, described gas is selected from conventional gas such as compressed air, helium, nitrogen, and air pressure is controlled at 0.4-1Mpa, gas enters lower air chamber 16, under air pressure promoted, piston 3 moved upward, and the gas in the upper gas chamber 15 is discharged by last pore 11, lower piston rod 32 drives spacing 10 of rubber ring and moves upward, rubber ring 4 is pushed, rubber ring 4 is outwards expanded, the extruding circular hole.Through hole in the middle of piston and the spacing head of rubber ring feeds gas, and gas enters product inside, after ventilation finishes, with the through hole sealing, can carry out follow-up air-tightness and detect.Behind the EOT, releasing is emitted gas to the sealing of through hole from through hole, then upwards pore 11 ventilations, air pressure is controlled at 0.4-1Mpa, gas enters upper gas chamber 15, and under air pressure promoted, piston 3 moved downward, gas in the lower air chamber 16 is by pore 12 discharges down, lower piston rod 32 drives spacing 10 of rubber ring and moves downward, and rubber ring 4 returns to original state, takes out getting final product in the circular hole.
Claims (9)
1. tensioning cylinder comprises:
Cylinder main body, described cylinder main body inside is provided with air cavity, upper and lower two pores are set on the sidewall, described pore communicates with described air cavity, leading section is provided with a through hole, and described through hole is provided with the cylinder main body sealing ring, and rearward end is connected with a rear end cap is airtight, and also be provided with a through hole on the described rear end cap, described through hole is provided with the rear end cap sealing ring;
Piston, be arranged in the described cylinder main body, constitute to the upper and lower two-piston bar that extend both sides respectively by piston head with from piston head, wherein, described piston head is between upper and lower two pores, described air cavity is separated into upper and lower two air cavitys, and the piston head sealing ring is set on the periphery of described piston head, contact with the wall of described air cavity, so that described piston head is in the process of moving up and down, gas in the described upper gas chamber can not be leaked in the described lower air chamber, and the gas in the described lower air chamber can not be leaked in the described upper gas chamber; Described upper piston rod stretches out from the through hole of described rear end cap, and outer wall contacts with described rear end cap sealing ring, so that described upper piston rod is when moving up and down in the through hole of described rear end cap, the gas in the described upper gas chamber can not be revealed from described rear end cap; Described lower piston rod stretches out from the through hole of described cylinder main body leading section, outer wall contacts with described cylinder main body sealing ring, so that described lower piston rod is when moving up and down in the through hole of described cylinder main body leading section, the gas in the described lower air chamber can not be revealed from the leading section of described cylinder main body;
Rubber ring is in described cylinder main body the place ahead, around the front end that is arranged on described lower piston rod, and at described rubber ring front end the spacing head of one rubber ring is set, and is connected with described lower piston rod.
2. tensioning cylinder as claimed in claim 1, it is characterized in that, described rearward end was meant with airtight connection of a rear end cap, rearward end at described cylinder main body is provided with pin-and-hole, be connected with described rear end cap is airtight by alignment pin, and between the rearward end of described cylinder main body and described rear end cap, a sealing ring be set; Or the rearward end of described cylinder main body is provided with screw thread, and described rear end cap also is provided with screw thread, and two threads engaged make the rearward end of cylinder main body be connected with rear end cap is airtight.
3. tensioning cylinder as claimed in claim 1, it is characterized in that, the spacing head of described rubber ring is connected with described lower piston rod and is meant, in the described lower piston rod pin-and-hole is set, on the spacing head of described rubber ring alignment pin is set, described alignment pin matches with described pin-and-hole the spacing head of described rubber ring is connected with described lower piston rod; Or in the described lower piston rod screw is set, and on the spacing head of described rubber ring screw rod being set, described screw rod matches with described screw the spacing head of described rubber ring is connected with described lower piston rod.
4. tensioning cylinder as claimed in claim 1 is characterized in that, spacing inside of described piston and described rubber ring also is provided with a through hole, is used for through-flow body.
5. tensioning cylinder as claimed in claim 1 is characterized in that, the spacing head of described cylinder main body, described rear end cap, described piston and described rubber ring is made by aluminium, iron or stainless steel.
6. tensioning cylinder as claimed in claim 1 is characterized in that, the wall thickness of described rubber ring is 3～100mm.
In the claim 1～6 each described tensioning cylinder in the application that pipettes or seal on porose parts/product.
8. the using method of each described tensioning cylinder in the claim 1～6 is characterized in that, may further comprise the steps:
A), described rubber ring is placed in the hole of porose parts/product;
B), feed gas in the pore down to described, gas enters described lower air chamber, under air pressure promotes, described piston moves upward, and the gas in the described upper gas chamber is discharged by the described pore of going up, and described lower piston rod drives the spacing head of described rubber ring and moves upward, described rubber ring is pushed, described rubber ring is outwards expanded, push the hole of described parts/product, pipette or seal porose parts/product;
C), feed gas to the described pore of going up, gas enters described upper gas chamber, under air pressure promotes, described piston moves downward, gas in the described lower air chamber is discharged by described pore down, described lower piston rod drives the spacing head of described rubber ring and moves downward, and described rubber ring returns to original state, takes out in the hole.
9. the using method of the described tensioning cylinder of claim 4 is characterized in that, may further comprise the steps:
A), described rubber ring is placed in the hole of porose parts/product;
B), feed gas in the pore down to described, gas enters described lower air chamber, under air pressure promotes, described piston moves upward, gas in the described upper gas chamber is discharged by the described pore of going up, and described lower piston rod drives the spacing head of described rubber ring and moves upward, and described rubber ring is pushed, described rubber ring is outwards expanded, push the hole of described parts/product;
C), feed fluid from described piston and the inner through hole of the spacing head of rubber ring, after fluid feeds and finishes, with described through hole sealing;
D), releasing is to the sealing of described through hole;
E), feed gas to the described pore of going up, gas enters described upper gas chamber, under air pressure promotes, described piston moves downward, gas in the described lower air chamber is discharged by described pore down, described lower piston rod drives the spacing head of described rubber ring and moves downward, and described rubber ring returns to original state, takes out in the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102174226A CN101890684A (en) | 2010-07-02 | 2010-07-02 | Tensioning cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102174226A CN101890684A (en) | 2010-07-02 | 2010-07-02 | Tensioning cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101890684A true CN101890684A (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102174226A Pending CN101890684A (en) | 2010-07-02 | 2010-07-02 | Tensioning cylinder |
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| CN (1) | CN101890684A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778339A (en) * | 2012-07-06 | 2012-11-14 | 山东海达通汽车零部件有限公司 | Intercooler side leakage pneumatic plugging device |
| CN104191392A (en) * | 2014-08-25 | 2014-12-10 | 吴中区横泾博尔机械厂 | Air control type three-station positioning jig |
| CN115056163A (en) * | 2022-06-29 | 2022-09-16 | 和信精密科技（吴江）有限公司 | Accurate clamping positioning system |
-
2010
- 2010-07-02 CN CN2010102174226A patent/CN101890684A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102778339A (en) * | 2012-07-06 | 2012-11-14 | 山东海达通汽车零部件有限公司 | Intercooler side leakage pneumatic plugging device |
| CN104191392A (en) * | 2014-08-25 | 2014-12-10 | 吴中区横泾博尔机械厂 | Air control type three-station positioning jig |
| CN115056163A (en) * | 2022-06-29 | 2022-09-16 | 和信精密科技（吴江）有限公司 | Accurate clamping positioning system |
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Application publication date: 20101124 |