JPH0587311U - Pneumatic cylinder device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a pneumatic cylinder that can share parts, reduce costs, and flexibly respond to the required thrust of the equipment used. [Structure] In this pneumatic cylinder device, a plurality of rectangular flat cylinders 1 are fixed so that their long sides are in close contact with each other.
It is fixed and configured with. Supply / discharge port 1 provided in the head cover portion 6 and rod cover 7 of each cylinder 1.
The first passage 13,1 so as to connect and connect the second passage 12 and the second passage 12a.
3a is formed, and second passages 14 and 1 for connecting and connecting the first passages 13 and 13a and the cylinder chambers 15 and 15a are formed.
4a is provided. Further, a plate-shaped connecting fitting 16 for connecting the plurality of piston rods 10 is provided at the tip of the piston rod 10 of the piston 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pneumatic cylinder device formed by connecting rectangular flat pneumatic cylinders.

[0002]

[Prior Art]

 In recent years, there is a need to reduce the cost of production equipment, and it is expected that the applications of pneumatic actuators will replace hydraulic actuators. A round piston type cylinder is used as this type of pneumatic cylinder. In general, a large number of cylinder bore diameters are prepared for this round piston type according to the required thrust of the equipment used, and they are being made into a series.

[0003]

[Problems to be solved by the device]

 Therefore, there is a problem that the cylinder tube, its die, the diameter of the piston, etc. are different for each series of bore diameters, and the parts cannot be shared. Therefore, it was not possible to satisfy the cost reduction of equipment.

Also, from the user's perspective, if the specifications of the equipment of the production facility are changed, the required thrust of the pneumatic cylinder used for the equipment will not match, and a new pneumatic cylinder will be purchased. There are problems such as having to do it.

The present invention has been made by paying attention to the problems existing in such a conventional technique, and the purpose thereof is that parts can be shared and the cost can be reduced, and the required thrust of the equipment to be used It is to provide a pneumatic cylinder capable of flexibly responding to.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, in the device according to claim 1, a tube having a rectangular cross section and different ratios of the lengths of the short side and the long side, a head cover and a rod cover at both ends thereof, and a head cover and a rod thereof. In a rectangular flat cylinder provided with a supply / discharge port formed in the cover and a piston slidably fitted in the tube, a plurality of rectangular flat cylinders are fixed so that their long sides are in close contact with each other. The main point is that they are fixed with members.

According to a second aspect of the present invention, a first passage is formed in each of the head cover and the rod cover so as to connect and connect the supply / discharge ports, the first passage, and the cylinder chamber. It is the gist to provide a second passage for connecting and connecting.

According to a third aspect of the present invention, the gist of the invention is to provide a plate-shaped connecting fitting for connecting a plurality of piston rods at the tip of the piston rod of each piston.

[0009]

[Action]

 With the above structure, in the device according to the first aspect, the plurality of rectangular flat cylinders are fixed by the fixing member such that their long sides are in close contact with each other.

According to the second aspect of the invention, air is sent to one of the supply / discharge ports on the inner head side or the rod side of the plurality of connected rectangular flat cylinders. This air is supplied to each cylinder chamber through the first and second passages. On the other hand, the air in the cylinder chamber on the rod side or the head side passes through the first and second passages formed in the rod cover and is discharged from the supply / discharge port. Therefore, the piston is moved from the head side or the rod side to the rod side or the head side.

Further, according to the third aspect of the invention, the thrust of each piston is coupled by the plate-like connecting fitting attached to the tip of the piston rod.

[0012]

【Example】

 An embodiment embodying the present invention will be described below with reference to FIGS. A plurality of (three in this embodiment) rectangular flat cylinders 1 have a casing 4 made of aluminum, which is composed of a tube 5, a head cover portion 6 integrated with the tube 5, and a rod cover 7 fixed to the tube 5. . The tube 5 and the head cover portion 6 are integrally formed by extrusion, and have a bottomed tubular shape as a whole. The casing 4 has a substantially rectangular cross section, and has a flat rectangular shape in which the ratio of the short side portion to the long side portion is different. A step is formed as a fitting portion on the periphery of the rod cover 7, and the fitting portion of the rod cover 7 is tightly fitted and fixed to the opening of the tube 5 by laser welding or an adhesive. Further, an insertion hole 8 is formed at the center of the rod cover 7 so as to penetrate therethrough. The piston 9 is movably inserted into the tube 5, and the piston rod 10 is inserted into the insertion hole 8 via the seal ring 11. As shown in FIG. 1, a plate-shaped connecting fitting 16 is attached to the tip of the piston rod 10 to couple the thrust of each piston 9.

The insertion holes 20 are provided in two places between the short sides of the rod cover 7 and the head cover portion 6, respectively. Then, with the short sides of the casings 4 in close contact with each other, the casings 4 are fastened and fixed by the bolts 2 and the nuts 3 passing through the insertion holes 20.

Supply / discharge ports 12 and 12 a are formed in the head cover portion 6 and the rod cover 7, respectively. The first passages 13 and 13a communicate with the supply / discharge ports 12 and 12a and penetrate between the short sides of the head cover portion 6 and the rod cover 7.

The first passages 13 and 13 a of each rectangular flat cylinder 1 are connected via a seal ring 17. The outer ends of the first passages 13 and 13a and the other supply / discharge ports, which respectively have one supply / discharge port on the head side and one on the rod side, are sealed by plugs 19a, 19 respectively.

The second passages 14 and 14a are provided between the head-side cylinder chamber 15 and the rod-side cylinder chamber 15a of the casing 4 and the first passages 13 and 13a. Therefore, the supply / discharge ports 12 and 12a having no plug 19 communicate with all the cylinder chambers 15 and 15a via the first and second passages 13, 13a, 14 and 14a. Pipes are connected to the supply / discharge ports 12 and 12a that do not have the plug 19.

Therefore, air is supplied and discharged through the supply / discharge ports 12 and 12a having no plug 19, and all the pistons 9 of each cylinder 1 are simultaneously operated. From the above, the number of cylinders 1 may be increased or decreased when changing the thrust force for changing the specifications of the equipment. That is, even if a large number of cylinders are not prepared, a small number of cylinders or a single type of cylinder can sufficiently cope with a specification change.

Therefore, most of the parts of the cylinder can be made common, and the number of types of dies can be small. Further, the width dimension can be made thinner than that of the conventional round cylinder.

Then, when the cylinder operates, the thrust of each piston 9 is coupled by the connecting fitting 16, and a sufficient thrust can be obtained. It should be noted that the present invention is not limited to the configuration of the above-described embodiment, and the spirit of the invention is changed without departing from the spirit of the invention. It can be arbitrarily changed within the range not to be.

[0020]

[Effect of the device]

 According to the present invention, since a plurality of square flat cylinders can be freely connected, the required thrust can be freely selected, and the components can be shared, so that the cost can be reduced.

Further, the respective passages formed in the head cover and the rod cover have an effect that the connection can be easily performed without requiring a new pipe. On the other hand, there is an effect that thrust can be coupled by the connecting metal fitting attached to the tip of the piston rod.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a pneumatic cylinder device embodying the present invention.

FIG. 2 is a transverse sectional view showing an embodiment of the pneumatic cylinder device.

FIG. 3 is a vertical sectional view of a pneumatic cylinder device.

[Explanation of symbols]

1 square flat cylinder, 2 bolts that are fixing members, 3
Nuts that are fixing members, 5 tubes, 6 head cover parts, 7 rod covers, 9 pistons, 12, 12
a supply / discharge port, 13, 13a first passage, 14, 1
4a Second passage, 15, 15a Cylinder chamber.

Claims (3)

[Scope of utility model registration request] 1. A tube having a rectangular cross section and having a different ratio of lengths of its short side and long side, a head cover and a rod cover at both ends thereof, a supply / discharge port formed in the head cover and the rod cover, and A pneumatic cylinder device comprising a rectangular flat cylinder provided with a piston slidably fitted in a tube, wherein a plurality of rectangular flat cylinders are fixed by a fixing member such that their long sides are in close contact with each other. 2. A first passage formed in the head cover and the rod cover so as to connect and connect the supply and discharge ports, and a second passage that connects and connects the first passage and the cylinder chamber. The pneumatic cylinder device according to claim 1, further comprising: 3. The pneumatic cylinder device according to claim 1, wherein a plate-like connecting fitting for connecting the plurality of piston rods is provided at a tip of the piston rod of each piston.