CN105298974A - Front end structure of cylinder - Google Patents
Front end structure of cylinder Download PDFInfo
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- CN105298974A CN105298974A CN201510186313.5A CN201510186313A CN105298974A CN 105298974 A CN105298974 A CN 105298974A CN 201510186313 A CN201510186313 A CN 201510186313A CN 105298974 A CN105298974 A CN 105298974A
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- cylinder body
- piston rod
- accessory
- end accessory
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- Standing Axle, Rod, Or Tube Structures Coupled By Welding, Adhesion, Or Deposition (AREA)
Abstract
The invention provides a front end structure of a cylinder. The structure is easy to disassemble and assemble when a sealing piece is exchanged. In the front end of a cylinder, a front end accessory (1) is arranged at the periphery of the front end of a piston rod (5) of the cylinder; the front end accessory (1) is provided with a flange part (3); the diameter of the flange part (3) is less than the opening diameter of a cylinder penetration part (31); the flange part (3) of the front end accessory (1) can be fixed on an opposite part (40) by means of a press accessory (4) which is divided into two parts and by means of a bolt; and the front end accessory (1) can form a structure which can be rotationally combined with the piston rod (5) or can form a structure which utilizes the bolt to fasten the front end accessory with a straight axle sleeve from the front end side of the piston rod (5).
Description
Technical field
The present invention relates to a kind of decomposition, assemble the front end structure of the cylinder body easily carried out.
Background technique
The cylinder body driven installs the main body of cylinder body usually at mounting base etc., and the front end of piston rod is installed on the other side's parts becoming driven object and uses.The front end such as described in patent documentation 1 at the piston rod of cylinder body is provided with the example of drift via front end accessory.
The bar front end geometry of cylinder body based on standardization such as JIS, is formed as fine thread according to each cylinder size.In order to change the Sealing of needs termly, need the decomposition carrying out front end accessory, but front end accessory needs to carry out fastening with larger tightening torque, to make can not loosen relative to the to-and-fro motion of cylinder body at every turn.Further, owing to using fine thread, so there is the problem that screw thread easily kills (か じ Ru) etc.
In addition, from the relation of the pitch of bolts of installing for cylinder body, bar nose threads size, as shown in Fig. 5 a, Fig. 5 b, because cylindrical rod front end accessory boundary dimension (γ size) is larger than cylinder body assembly department opening size (α size), if so do not pulled down by the piston rod 5 of front end accessory 1 from cylinder body, then main body cylinder block cannot be pulled down from device.But in a lot of situation, be difficult to carry out decomposing with larger tightening torque in narrow device, fastening, exist produces because tightening torque is not enough thread looseness, because of the loosening and situation of the undesirable condition of double thread impulses power.
Fig. 5 a is the existing structure as mating face, screw thread being worked the end difference 21 of bar nose threads.There is the situation of the plane that is not correctly shaped in the end difference 21 of this screw thread, and area of contact is also little, thus there is the worry because of cylinder body thrust, mating face impulses power being made to thread looseness.
Fig. 5 b is the existing structure utilizing locking nut 22 that screw thread is worked.This structure fully can guarantee the area of contact on the mating face that screw thread is worked, but because of cylinder body thrust the screw thread that stretches, produce small elongation, so locking nut 22 reduces with the surface pressure of the surface of contact of front end accessory 1, screw thread easily loosens.In addition, there is the problem that screw thread is easily killed in the decomposition carried out in the device that the atmosphere because of chip, dust etc. is severe, assembling.
In addition as shown in Figure 6, make front end accessory 1 and construct for splitting by Press fitting 4, under the state being assembled with front end accessory 1, become the structure taken out outside device, also can decompose under the good atmosphere not having chip, dust etc., assemble front end accessory 1.But when for large-scale cylinder body, the fine thread size of bar front end also comparatively large (such as when the cylinder body for diameter 180mm, M120, pitch=2.0mm).Therefore, when screw thread is killed in the midway of decomposing, assemble, can produce and cannot move the undesirable condition that also cannot restore from this position.In this case, cylindrical rod 5 must be cut off, remove the front end accessory 1 of killing, and piston assembly and new product are changed.For the replacing of the Sealing as the most cheap parts, except the problem of risk with the piston assembly changing high price, in order to avoid the long-term stopping of equipment, need the spare part possessing piston assembly for the different whole cylinder body of size, stroke.
Patent documentation 1: Japanese Unexamined Patent Publication 2006-315034 publication
Summary of the invention
Therefore the object of the invention is to solve above-mentioned existing issue point, a kind of decomposition when changing Sealing is provided, assemble the front end structure of the cylinder body easily carried out.
For the feature solving the 1st mode of the present invention that above-mentioned problem completes is, in the front end periphery of the piston rod of cylinder body, front end accessory is installed, this front end accessory has the diameter lip part less than the opening diameter of cylinder body breakthrough part, by being divided into the utilizing bolt by Press fitting and the lip part of this front end accessory is fixed on the other side's parts of two-part mode.
In addition, in the 2nd mode, in the front end periphery of piston rod, there is fine thread and become the structure screwed with the front end accessory of nut side, can using the mating face that makes screw thread the work front-end face as piston rod.In addition in the 3rd mode, front end accessory with press in the Qian He of Press fitting, can become very close to each other on piston direct of travel and there is the cooperation in gap in the Vertical direction of piston direct of travel.In addition in the 4th mode, following structure can be formed as, that is, make the front end of piston rod for not having threaded d-axis, utilize bolton to have the front end accessory of straight axle sleeve from the forward end of piston rod.
In any one situation, in the 5th mode, can be the structure of the root side lip part of front end accessory being configured at piston rod, or in the 6th mode, can be the structure of the forward end lip part of front end accessory being configured at piston rod.In addition, in the 7th mode, the front end of cylinder body can be configured to die molding machine or the making molds production line of foundry equipment.And, in the 8th mode, the front end of cylinder body can be configured to any one in the advancing means in the making molds production line of foundry equipment, damping device, lowering or hoisting gear, mould closer, box separation device, casting mold dismounting device, device of strike-ofing, cast gate excavating gear, open pore device, core accommodation device, base plate erecting device, base plate segregating unit, sandbox Handling device, weight transfer device.
The invention of the 1st mode is configured to, in the front end periphery of the piston rod of cylinder body, front end accessory is installed, this front end accessory has the diameter lip part less than the opening diameter of cylinder body breakthrough part, utilizes bolt that the lip part of this front end accessory is fixed on the other side's parts by what be divided into two-part mode by Press fitting.Therefore, if loose bolts and pull down by Press fitting and also main body cylinder block pulled down from mounting base etc., then through cylinder body breakthrough part, front end accessory can be taken out.Therefore have can operability and environment good device outside carry out the decomposition of front end accessory and the advantage of assembling.
For the invention of the 2nd mode, because the mating face that will screw thread be made to work is as the larger bar front end of area, therefore there is the advantage that can prevent the thread looseness produced because of the effect of the impact force to mating face.In addition, the mating face of working owing to making screw thread is positioned at the opposition side of the cylinder body side of accessory screw section, front end, is therefore difficult to the impact being subject to cylinder body thrust, and the pressure of contact surface on mating face is difficult to reduce.Therefore, there is the advantage that screw thread is difficult to loosen.
For the invention of the 3rd mode, owing to making front end accessory and being the cooperation in the Vertical direction of piston direct of travel with gap by coordinating of Press fitting, therefore there is advantage piston rod not being applied to transverse load.
For the invention of the 4th mode, owing to being configured to make piston rod for not having threaded d-axis, utilize bolton to have the front end accessory of straight axle sleeve from the forward end of piston rod, so do not use fine thread, thus have the risk of generation thread biting locking can be made to be the advantage of zero.
For the invention of the 5th mode, separately use the front end accessory that lugs position is different, thus there is the advantage that can improve the degrees of freedom that cylinder body is installed in limited space.
According to the invention of the 6th mode, separately use the front end accessory that lugs position is different, thus there is the advantage that can improve the degrees of freedom that cylinder body is installed in limited space.
According to the invention of the 7th mode, there is advantage large as follows: in the die molding machine or making molds production line of foundry equipment, decomposition and the assembling of front end accessory can be carried out in operability and the good device outside of environment.
According to the invention of the 8th mode, there is advantage large as follows: can operability and the good device of environment outside, carry out decomposition and the assembling of the front end accessory among any one in the advancing means in the making molds production line of foundry equipment, damping device, lowering or hoisting gear, mould closer, box separation device, casting mold dismounting device, device of strike-ofing, cast gate excavating gear, open pore device, core accommodation device, base plate erecting device, base plate segregating unit, sandbox Handling device, weight transfer device.
Accompanying drawing explanation
Fig. 1 a is the plan view of the cylinder body representing the 1st mode of execution.
Fig. 1 b is the figure of the front end accessory representing the 1st mode of execution, and Fig. 1 b (a) is plan view, and Fig. 1 b (b) is front section view.
Fig. 1 c is the figure by Press fitting representing the 1st mode of execution, and Fig. 1 c (a) is plan view, and Fig. 1 c (b) is front section view.
Fig. 2 a is the front section view of the assembled state representing the 1st mode of execution.
Fig. 2 b is the plan view of the assembled state representing the 1st mode of execution.
Fig. 3 a is the figure of the cylinder body representing the 2nd mode of execution, and Fig. 3 a (a) is plan view, and Fig. 3 a (b) is plan view.
Fig. 3 b is the figure of the front end accessory of the 2nd mode of execution, and Fig. 3 b (a) is plan view, and Fig. 3 b (b) is front section view.
Fig. 4 a is the front section view of the assembled state representing the 2nd mode of execution.
Fig. 4 b is the front section view of the variation representing the 2nd mode of execution.
Fig. 5 a is the front section view representing prior art.
Fig. 5 b is the front section view representing another prior art.
Fig. 6 is the front section view representing another prior art.
Symbol description:
1... front end accessory; 2... main body cylinder block; 3... lip part; 4... Press fitting is pressed; 5... piston rod; 6... segmentation; 7... fine thread; 8... mating face; 9... hole; 10... the direct of travel of piston; 11... connection very close to each other; 12... the Vertical direction of piston direct of travel; 13... gap; 14... large-scale cylinder body; 15... front end accessory; 16... d-axis; 17... piston rod; 18... axle sleeve; 19... bolt; 20... penetration hole; 21... the end difference of screw thread; 22... locking nut; 30... mounting base; 31... cylinder body breakthrough part; 32... bolt; 40... the other side's parts; 41... bolt.
Embodiment
Below the preferred embodiment of the present invention is described.
Fig. 1, Fig. 2 are the figure representing the 1st mode of execution of the present invention, and expression is not pulled down front end accessory and pulls down the structure of main body cylinder block from device.2 is main body cylinder block, and 5 is its piston rod.Main body cylinder block 2 is fixed on by bolt 32 and possesses the mounting base 30 that opening diameter is the cylinder body breakthrough part 31 of α.Fine thread 7 is formed in the periphery of the front end of piston rod 5.
1 is the front end accessory of the front end periphery being installed on piston rod 5.This front end accessory 1 has the external diameter β lip part 3 less than the opening diameter α of cylinder body breakthrough part 31.Also be formed with fine thread 7 at the inner peripheral surface of front end accessory 1, become the structure that front end accessory 1 is screwed from the forward end of piston rod 5.
The inner bottom surface of front end accessory 1 is tabular surface, the piston rod 5 with fine thread 7 and front end, nut side accessory 1 fastening in, the mating face 8 of working making screw thread is as the face of bar front end.Because the mating face 8 that will screw thread be made like this to work is as the larger bar front end of area, so the thread looseness produced because of the effect of the impact force to mating face 8 can be prevented.In addition, the mating face 8 of working owing to making screw thread is positioned at the opposition side of the cylinder body side of the screw section of front end accessory 1, therefore be difficult to the impact being subject to cylinder body thrust, and be difficult to reduce due to the pressure of contact surface on mating face 8, therefore there is the effect that screw thread is difficult to loosen.In addition, the hole 9 of front end accessory 1 is the exhaust port of piston rod 5 when assembling.
By being divided into the utilizing bolt 41 by Press fitting 4 and the lip part 3 of this front end accessory 1 is fixed on the other side's parts 40 of two-part mode.The front end formation of structure of cylinder body for two-part will be divided into by Press fitting 4, even if thus front end accessory 1 is not pulled down from piston rod 5 and can carry out decomposing, assembling yet.Shown in Fig. 1 c (a) 6 is segmentation.
Front end accessory 1 with press in the Qian He of Press fitting 4, the direct of travel 10 of piston becomes cooperation 11 very close to each other, and become the cooperation with gap 13 in the Vertical direction 12 of piston direct of travel.Like this, by making front end accessory 1 and being the cooperation in the Vertical direction 12 of piston direct of travel with gap 13 by coordinating of Press fitting 4, thus there is advantage piston rod 5 not being applied to transverse load.
In the front end structure of the cylinder body of the present invention formed like this, if loose bolts 41 will be divided into pulling down from the other side's parts 40 by Press fitting 4 of two-part mode, then piston rod 5 can be separated from the other side's parts 40.Therefore, it is possible to main body cylinder block 2 is taken out from cylinder body breakthrough part 31 under the state of front end front end accessory 1 being arranged on piston rod 5, and pull down to device outside.Thus the operation such as decomposition, assembling when changing Sealing can easily be carried out.
Next by Fig. 3, Fig. 4, the 2nd mode of execution of the present invention is described.In these figures, 14 is large-scale cylinder body, and 15 is its front end accessory.
When for this large-scale cylinder body 14, piston rod 17 is cancelled fine thread 7 and is d-axis 16.Front end accessory 15 is formed as having straight axle sleeve 18, carries out fastening structure from the forward end of piston rod 17 by bolt 19.In addition, 20 is penetration hole.
Identical with the 1st mode of execution, front end accessory 15 has the diameter lip part 3 less than the external diameter of large-scale cylinder body 14, and this lip part 3 is by being divided into the utilizing bolt 41 by Press fitting 4 and be fixed on the other side's parts 40 of two-part mode.
For the large-scale cylinder body 14 employing d-axis 16 like this, only when only using pulling when the imposed load of side of piston rod 17.Due to the strength deficiency of bolt 19, therefore can not use when the release side imposed load to piston rod.When the pull-out side imposed load to piston rod, become the piston rod 5 making there is the fine thread 7 shown in Fig. 1, Fig. 2 and combine with front end accessory 1 and the structure that obtains.
At Fig. 4 a, following example is shown, that is, in limited space, in order to improve the degrees of freedom that cylinder body is installed, and the flange 3 of front end accessory 15 is configured at the root side of piston rod 17.In addition, at Fig. 4 b, following variation is shown, that is, the flange 3 of front end accessory 15 is configured at the forward end of piston rod 17.Like this, the installation direction of front end accessory 15 can be selected.
In the 2nd mode of execution, if will pulling down from the other side's parts 40 by Press fitting 4 of two-part mode be divided into, then also piston rod 17 can be separated from the other side's parts 40.Therefore, it is possible to large-scale main body cylinder block 14 is taken out from cylinder body breakthrough part under the state of front end front end accessory 15 being arranged on piston rod 17, and pull down to device outside.Thus, the operation such as decomposition, assembling when changing Sealing can easily be carried out.
In addition, the front end structure front end that such as can become for the cylinder body of foundry equipment (such as, die molding machine, making molds production line etc.) of cylinder body of the present invention constructs.In addition when the cylinder body for the various devices for making molds production line, if use the device of cylinder body, be not particularly limited, may be used for any device.In addition, in making molds production line, as the various devices using cylinder body, such as, list advancing means, damping device, lowering or hoisting gear, mould closer, box separation device, drawing device (casting mold dismounting device), device of strike-ofing, cast gate excavating gear, open pore device, core accommodation device, base plate erecting device, base plate segregating unit, sandbox Handling device (turntable), weight transfer device etc.
Claims (8)
1. the front end structure of a cylinder body, is characterized in that,
In the front end periphery of the piston rod of cylinder body, front end accessory is installed, this front end accessory has the diameter lip part less than the opening diameter of cylinder body breakthrough part, by being divided into the utilizing bolt by Press fitting and the lip part of this front end accessory is fixed on the other side's parts of two-part mode.
2. the front end structure of cylinder body according to claim 1, is characterized in that,
Have fine thread in the front end periphery of described piston rod and become the structure screwed with the front end accessory of nut side, the mating face of working making screw thread is as the front-end face of piston rod.
3. the front end structure of cylinder body according to claim 1, is characterized in that,
Front end accessory with press in the Qian He of Press fitting, become very close to each other on piston direct of travel and there is the cooperation in gap in the Vertical direction of piston direct of travel.
4. the front end structure of cylinder body according to claim 1, is characterized in that,
Be formed as following structure, that is, make the front end of described piston rod for not having threaded d-axis, utilize bolton to have the front end accessory of straight axle sleeve from the forward end of piston rod.
5. the front end structure of the cylinder body according to any one of Claims 1 to 4, is characterized in that,
The lip part of front end accessory is configured at the root side of piston rod.
6. the front end structure of the cylinder body according to any one of Claims 1 to 4, is characterized in that,
The lip part of front end accessory is configured at the forward end of piston rod.
7. the front end structure of the cylinder body according to any one of Claims 1 to 4, is characterized in that,
The front end of described cylinder body is configured to die molding machine or the making molds production line of foundry equipment.
8. the front end structure of the cylinder body according to any one of Claims 1 to 4, is characterized in that,
The front end of described cylinder body is configured to any one in advancing means in the making molds production line of foundry equipment, damping device, lowering or hoisting gear, mould closer, box separation device, casting mold dismounting device, device of strike-ofing, cast gate excavating gear, open pore device, core accommodation device, base plate erecting device, base plate segregating unit, sandbox Handling device, weight transfer device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014-135680 | 2014-07-01 | ||
| JP2014135680A JP6221969B2 (en) | 2014-07-01 | 2014-07-01 | Cylinder tip structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105298974A true CN105298974A (en) | 2016-02-03 |
| CN105298974B CN105298974B (en) | 2019-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510186313.5A Active CN105298974B (en) | 2014-07-01 | 2015-04-20 | The front end cage structure of cylinder body |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6221969B2 (en) |
| CN (1) | CN105298974B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7309079B2 (en) | 2020-09-10 | 2023-07-14 | 三菱電機エンジニアリング株式会社 | Equipment condition monitoring device, abnormality determination system, and equipment condition monitoring method |
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| JP2006315034A (en) * | 2005-05-12 | 2006-11-24 | Sintokogio Ltd | Apparatus for releasing molding flask in sand mold with molding flask in which molten metal is poured |
| CN201155570Y (en) * | 2007-12-27 | 2008-11-26 | 沈阳大学 | Water isolation pump guiding type high pressure fresh water valve |
| CN102000748A (en) * | 2010-10-21 | 2011-04-06 | 武汉一冶钢结构有限责任公司 | Anti-eccentricity pressing piston rod connecting device of no-guiding slider type hydraulic press |
| CN202498088U (en) * | 2012-03-08 | 2012-10-24 | 宁波宝新不锈钢有限公司 | Piston rod anti-loose device for hydraulic cylinder for wiper |
| CN103447319A (en) * | 2013-09-05 | 2013-12-18 | 太原重工股份有限公司 | Three-station large carrier roller device |
| CN103706763A (en) * | 2013-12-20 | 2014-04-09 | 江苏中力齿轮有限公司 | Special machine for pressing sprue cup |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4323003A (en) * | 1980-03-24 | 1982-04-06 | Clippard Instrument Laboratory, Inc. | Fluid cylinder with replaceable rod seal and guide |
| JPS62136605U (en) * | 1986-02-20 | 1987-08-28 | ||
| JPS62195426U (en) * | 1986-06-03 | 1987-12-12 | ||
| JPS63193101U (en) * | 1987-05-30 | 1988-12-13 | ||
| JP2001082446A (en) * | 1999-09-08 | 2001-03-27 | Nkk Corp | Clevis coupling |
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2014
- 2014-07-01 JP JP2014135680A patent/JP6221969B2/en active Active
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2015
- 2015-04-20 CN CN201510186313.5A patent/CN105298974B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3984646A (en) * | 1975-04-29 | 1976-10-05 | Day Harry E | Limit switch actuator |
| JP2006315034A (en) * | 2005-05-12 | 2006-11-24 | Sintokogio Ltd | Apparatus for releasing molding flask in sand mold with molding flask in which molten metal is poured |
| CN201155570Y (en) * | 2007-12-27 | 2008-11-26 | 沈阳大学 | Water isolation pump guiding type high pressure fresh water valve |
| CN102000748A (en) * | 2010-10-21 | 2011-04-06 | 武汉一冶钢结构有限责任公司 | Anti-eccentricity pressing piston rod connecting device of no-guiding slider type hydraulic press |
| CN202498088U (en) * | 2012-03-08 | 2012-10-24 | 宁波宝新不锈钢有限公司 | Piston rod anti-loose device for hydraulic cylinder for wiper |
| CN103447319A (en) * | 2013-09-05 | 2013-12-18 | 太原重工股份有限公司 | Three-station large carrier roller device |
| CN103706763A (en) * | 2013-12-20 | 2014-04-09 | 江苏中力齿轮有限公司 | Special machine for pressing sprue cup |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105298974B (en) | 2019-10-22 |
| JP2016014408A (en) | 2016-01-28 |
| JP6221969B2 (en) | 2017-11-01 |
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