CA1280951C - Device at pneumatic cylinders - Google Patents
Device at pneumatic cylindersInfo
- Publication number
- CA1280951C CA1280951C CA000512173A CA512173A CA1280951C CA 1280951 C CA1280951 C CA 1280951C CA 000512173 A CA000512173 A CA 000512173A CA 512173 A CA512173 A CA 512173A CA 1280951 C CA1280951 C CA 1280951C
- Authority
- CA
- Canada
- Prior art keywords
- cylinder
- cylinders
- strip
- parallel
- slot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 230000000295 complement effect Effects 0.000 claims description 4
- 230000000875 corresponding effect Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
Landscapes
- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Abstract A device for pneumatic cylinders where the piston is provided with a lateral carrier means (2) extending through a slot in the cylinder wall, said slot being sealed by means of a sealing band (3). On the outside of the cylinder (1) there is provided at least one undercut groove (4) extending along the cylinder and in parallel with its axis. A strip (6) corresponding to the length of the cylinder is further arranged to comprise at least two profiles (8) lying in a common plane, turned in op-posite directions and having a cross-sectional form cor-responding to that of the undercut groove (4).
Description
5~
Device at pneumatic cylinders This invention relates to a device for pneumatic cylinders, "Origa cylinders", where the piston is pro-vided with a carrier means extending laterally through a slot in the cylinder wall and moving along the slot by the pneumatic pressure. This is sealed and seals against the interior of the cylinder by means of a sealing band.
Sometimes it is desired to interconnect several such cylinders beside each other, a greater force being ob-tained as compared with a simple cylinder. Alternatively, ln cylinders of a smaller diameter can be used for obtain-ing the same force. Due to the fact that the end fittings of the weaker cylinders provided with valves are shorter than those of the coarser cylinders a shorter built-in length is obtained at the same time when using several weaker cylinders than what should have been the case using a single corresponding coarser cylinder.
At parallel connection of several piston-cylinder de-~ices beside each other there are great problems in mount-ing the cylinders exactly parallel and preventing each 2û type of the drawer effect in the work of the cylinders.
It is possible by means of the present invention - such as this is apparent from the characterizing portions oF the claims to interconnect in a very simple and ef-ficient way two or more "Origa cylinders", an exact pa-~5 rallelism between the cylinders being automatically ob-tained simultaneously as these are stiffened, which is very important using long cylinders.
According to a broad aspect, the invention relates to a device at such pneumatic cylinaers where the piston is provided with a lateral carrier means extending through a slot in the cylinder wall, said slot being sealed by means of a sealing band, characterized in that there are two parallel cylinders each having a substantially square cross section and each having a side provided with two undercut grooves extending along the \ ~
.
1(a) cylinder and in parallel wi-th its axis and that a strip corresponding to the length of -the cylinders is arranged in each groove, each strip comprising at least two profiles lylng in a common plane, turned in opposite directions and having a cross--sectional form corresponding to that of the respective undercut groove, the strips being fixed to each other by means of screws acting between the two strips.
According to a further aspect, the invention relates to a piston and cylinder assembly comprising: at least two adjacent, separate side-by-side, parallel piston and cylinder units in each of which the piston is provided with a carrier projecting laterally through a slot in the cylinder wall, said slot ~eing sealed by a sealing band, and the wall of each cyllnder which aces the wall of the adjacent cylinder having two undercut grooves extending the entire length of the cylinder parallel to the axis of the cylinder; two connecting strips connecting the two cylinders together and maintaining them in parallel relationship, each strip having a body portion extending the length of the respective strip, the body portion having opposite surfaces which are complementary to and engage the outside surfaces of the two cylinders, and each strip having two flanges e~tending the length thereof, each flange projecting into one of said grooves and having a cross-sectional shape complementary to the respective groove, and screws connecting the two strips The invention will be described more closely in the form of an example with reference to the drawing, in which Fiq. 1 shows schematically a section of four cylinders mounted in parallel and Fiq. 2 shows schematically a par-tial lateral view of the interconnected cylinders.
1 designates each of the four cylinders which are shown in Fig. 1 only with their outer contours. 2 desig-nates the carrier means attached to the respective piston (not shown), extendlng in known manner in a slot arranged along the cylinder, covering and sealing the interior of the cylinder by means of a band designated ~ in Fig. 2.
This type of cylinder is known per se and is here no part of the invention.
In the example shown each cylinder is given a sub-stantially square profile and has twD undercut grooves 4 lû on three sides. These grooves are preferably manufactured at the same time as the cylinder and extend exactly in parallel with the center axis 5 thereof. The shape of the undercut groove 4 can of course vary and according to the example the grooves have a profile of a substantial-ly rectangular form.
For the interconnection of the four cylinders shownin the example eight strips 6 are used which each have in profile a main portion 7, the opposite sides of which having a form connecting to the outside of the cylinder. The strip 2û has further prQfiles 8 lying in a common plane, turned in opposite directions and having a cross-sectional form cor-responding to that of the untercut groove 4. The strip 6 has a length corresponding to that of the cylinder 1. The strips 6 are fixed in pairs between two cylinders by means oF screws 9, as shown in the figures.
Of course it is to be understood that an optional number of cylinders can be interconnected in this way.
The interconnection can be made with the cylinders placed in an optional pattern which will be easily realized.
Within the scope of the invention it will be apparent to one skilled in the art that the cross-sectional forms of the cylinder, the undercut grooves 4, the strips 6 and the profiles 8 can be varied attaining the set aim.
. .~ ` : `
:: . . :
~ ' .
Device at pneumatic cylinders This invention relates to a device for pneumatic cylinders, "Origa cylinders", where the piston is pro-vided with a carrier means extending laterally through a slot in the cylinder wall and moving along the slot by the pneumatic pressure. This is sealed and seals against the interior of the cylinder by means of a sealing band.
Sometimes it is desired to interconnect several such cylinders beside each other, a greater force being ob-tained as compared with a simple cylinder. Alternatively, ln cylinders of a smaller diameter can be used for obtain-ing the same force. Due to the fact that the end fittings of the weaker cylinders provided with valves are shorter than those of the coarser cylinders a shorter built-in length is obtained at the same time when using several weaker cylinders than what should have been the case using a single corresponding coarser cylinder.
At parallel connection of several piston-cylinder de-~ices beside each other there are great problems in mount-ing the cylinders exactly parallel and preventing each 2û type of the drawer effect in the work of the cylinders.
It is possible by means of the present invention - such as this is apparent from the characterizing portions oF the claims to interconnect in a very simple and ef-ficient way two or more "Origa cylinders", an exact pa-~5 rallelism between the cylinders being automatically ob-tained simultaneously as these are stiffened, which is very important using long cylinders.
According to a broad aspect, the invention relates to a device at such pneumatic cylinaers where the piston is provided with a lateral carrier means extending through a slot in the cylinder wall, said slot being sealed by means of a sealing band, characterized in that there are two parallel cylinders each having a substantially square cross section and each having a side provided with two undercut grooves extending along the \ ~
.
1(a) cylinder and in parallel wi-th its axis and that a strip corresponding to the length of -the cylinders is arranged in each groove, each strip comprising at least two profiles lylng in a common plane, turned in opposite directions and having a cross--sectional form corresponding to that of the respective undercut groove, the strips being fixed to each other by means of screws acting between the two strips.
According to a further aspect, the invention relates to a piston and cylinder assembly comprising: at least two adjacent, separate side-by-side, parallel piston and cylinder units in each of which the piston is provided with a carrier projecting laterally through a slot in the cylinder wall, said slot ~eing sealed by a sealing band, and the wall of each cyllnder which aces the wall of the adjacent cylinder having two undercut grooves extending the entire length of the cylinder parallel to the axis of the cylinder; two connecting strips connecting the two cylinders together and maintaining them in parallel relationship, each strip having a body portion extending the length of the respective strip, the body portion having opposite surfaces which are complementary to and engage the outside surfaces of the two cylinders, and each strip having two flanges e~tending the length thereof, each flange projecting into one of said grooves and having a cross-sectional shape complementary to the respective groove, and screws connecting the two strips The invention will be described more closely in the form of an example with reference to the drawing, in which Fiq. 1 shows schematically a section of four cylinders mounted in parallel and Fiq. 2 shows schematically a par-tial lateral view of the interconnected cylinders.
1 designates each of the four cylinders which are shown in Fig. 1 only with their outer contours. 2 desig-nates the carrier means attached to the respective piston (not shown), extendlng in known manner in a slot arranged along the cylinder, covering and sealing the interior of the cylinder by means of a band designated ~ in Fig. 2.
This type of cylinder is known per se and is here no part of the invention.
In the example shown each cylinder is given a sub-stantially square profile and has twD undercut grooves 4 lû on three sides. These grooves are preferably manufactured at the same time as the cylinder and extend exactly in parallel with the center axis 5 thereof. The shape of the undercut groove 4 can of course vary and according to the example the grooves have a profile of a substantial-ly rectangular form.
For the interconnection of the four cylinders shownin the example eight strips 6 are used which each have in profile a main portion 7, the opposite sides of which having a form connecting to the outside of the cylinder. The strip 2û has further prQfiles 8 lying in a common plane, turned in opposite directions and having a cross-sectional form cor-responding to that of the untercut groove 4. The strip 6 has a length corresponding to that of the cylinder 1. The strips 6 are fixed in pairs between two cylinders by means oF screws 9, as shown in the figures.
Of course it is to be understood that an optional number of cylinders can be interconnected in this way.
The interconnection can be made with the cylinders placed in an optional pattern which will be easily realized.
Within the scope of the invention it will be apparent to one skilled in the art that the cross-sectional forms of the cylinder, the undercut grooves 4, the strips 6 and the profiles 8 can be varied attaining the set aim.
. .~ ` : `
:: . . :
~ ' .
Claims (3)
1. Device at such pneumatic cylinders where the piston is provided with a lateral carrier means extending through a slot in the cylinder wall, said slot being sealed by means of a sealing band, characterized in that there are two parallel cylinders each having a substantially square cross section and each having a side provided with two undercut grooves extending along the cylinder and in parallel with its axis and that a strip corresponding to the length of the cylinders is arranged in each groove, each strip comprising at least two profiles lying in a common plane, turned in opposite directions and having a cross-sectional form corresponding to that of the respective undercut groove, the strips being fixed to each other by means of screws acting between the two strips.
2. The device of claim 1, characterized in that three sides of the cylinder are each provided with two undercut grooves.
3. A piston and cylinder assembly comprising:
at least two adjacent, separate side-by-side, parallel piston and cylinder units in each of which the piston is provided with a carrier projecting laterally through a slot in the cylinder wall, said slot being sealed by a sealing band, and the wall of each cylinder which faces the wall of the adjacent cylinder having two undercut grooves extending the entire length of the cylinder parallel to the axis of the cylinder; two connecting strips connecting the two cylinders together and maintaining them in parallel relationship, each strip having a body portion extending the length of the respective strip, the body portion having opposite surfaces which are complementary to and engage the outside surfaces of the two cylinders, and each strip having two flanges extending the length thereof, each flange projecting into one of said grooves and having a cross-sectional shape complementary to the respective groove, and screws connecting the two strips.
at least two adjacent, separate side-by-side, parallel piston and cylinder units in each of which the piston is provided with a carrier projecting laterally through a slot in the cylinder wall, said slot being sealed by a sealing band, and the wall of each cylinder which faces the wall of the adjacent cylinder having two undercut grooves extending the entire length of the cylinder parallel to the axis of the cylinder; two connecting strips connecting the two cylinders together and maintaining them in parallel relationship, each strip having a body portion extending the length of the respective strip, the body portion having opposite surfaces which are complementary to and engage the outside surfaces of the two cylinders, and each strip having two flanges extending the length thereof, each flange projecting into one of said grooves and having a cross-sectional shape complementary to the respective groove, and screws connecting the two strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000512173A CA1280951C (en) | 1986-06-23 | 1986-06-23 | Device at pneumatic cylinders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000512173A CA1280951C (en) | 1986-06-23 | 1986-06-23 | Device at pneumatic cylinders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1280951C true CA1280951C (en) | 1991-03-05 |
Family
ID=4133404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000512173A Expired - Lifetime CA1280951C (en) | 1986-06-23 | 1986-06-23 | Device at pneumatic cylinders |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1280951C (en) |
-
1986
- 1986-06-23 CA CA000512173A patent/CA1280951C/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed | ||
| MKEC | Expiry (correction) |
Effective date: 20121205 |