JPS58102810A - Unit cylinder - Google Patents

Abstract

PURPOSE:To simplify the entire structure in a small size and to eliminate a need of external rotation stop or reinforcemnt by a method wherein an air supply port is provided and a piston rod and the tip end of a guide shaft are interconnected fixedly by means of a connection plate. CONSTITUTION:A guide mechanism 2 and an air cylinder mechanism 3 are arranged in the upper part within a short-sized case body 1. The tip end of the guide shaft 4 which is an operating part of the guide mechanism 2 and that of a piston rod 5 of the air cylinder mechanism 3 are interconnected as protruded out of the case body 1 by means of the short-sized connection plate 6 for performing an combined operation. When a pressurized air is supplied through a screw hole 30, a piston 12 is extruded forwardly, and at the same time the piston rod 5 is moved integrally, thereby moving also the guide shaft 4 integrally.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a unit cylinder incorporating a cylinder mechanism and a guide mechanism.

This type of device is often used as a so-called transfer/transfer device that repeatedly makes reciprocating motion in the horizontal or vertical direction. However, it is very rare that the air cylinder is used alone; conventionally, as shown in Figure 4, the air cylinder a and the guide section were provided independently, and their main body and operating section were fixed. was common. However, in this case, 1. Since the air cylinder part a and the guide part are independent, the elements c and d that connect the air cylinder part a and the guide part bl are not required, and the space for arranging them is large. At the same time, it took a long time to assemble and adjust.2 Since the air cylinder part a and the guide part are independent, in order to install this configuration, a separate mounting element e for the purpose of mounting is required, and the installation The change in position required either a change in the position of the mounting element e or a change in the position of the mounting hole.

The present invention solves the above-mentioned drawbacks, and embodiments thereof will be described below based on FIGS. The tip of the guide shaft 4, which is the operating part of the guide mechanism 2, and the tip of the piston rod 6, which is the output element of the air cylinder mechanism 3, are connected to the case body 1.
It protrudes more and is connected by a rectangular connecting plate 6 so as to operate integrally. The guide mechanism 2 is composed of a guide shaft 4 and two slide bearings 7.8 coaxially arranged at appropriate intervals in the longitudinal direction. The slide bearing 7.8 is held by a round hole e formed in the upper part of the case body 1 and a cylindrical spacer 10 that prevents sliding and maintains a distance therebetween, and is fixed by the front cover 11. The air cylinder section 3 includes a piston 12, a piston rod 6 that operates integrally with the piston 12, and a cylinder 13 formed in the lower part of the case body 1. piston 12
On the outer periphery of the piston 12 are gaskets 14 and 15 for preventing air leakage, an annular permanent magnet 16 as an object to detect the piston position, and a resin ring 17 as a guide when the piston slides.
It is arranged concentrically with the piston 12 and operates integrally with the piston 12. The cylinder 13 is a round hole formed in the lower part of the case body 1 in the longitudinal direction. A stepped cylindrical stopper 18, which is a stopper for the piston 12, is attached to the tip of the cylinder 13. A packing 19 is arranged on the outer periphery of the stopper 18 to prevent air leakage from the cylinder 13.

In addition, the stopper 18 is formed with a guide hole 2o for the piston rod 6 on the same axis as the cylinder 13.
Dust seals 21 and 22 are respectively arranged in the guide hole 20 to prevent dust from flowing into the cylinder 13 through the gap between the piston rod 6 and the guide hole 2o. An air flow path 23 is formed approximately in the center of the case body 1 in the longitudinal direction from the rear of the case body 1 to the vicinity of the tip. This air passage 23 is located near the tip of the case body 1 and penetrates through an air supply/discharge port 24 . The rectangular front cover 11 is fastened with four bolts 26 to the left end surface of the case body 1 in FIG.
and the stopper 18 is fixed.

A rectangular rear cover 26 is fixed to the rear end surface of the case body 1 with four bolts 27. An escape hole 28 for the slide shaft 4 is formed in the rear cover 26,
Furthermore, a screw hole 29 penetrating the rear cover 26 is formed at a position that matches the air flow path 23 formed in the main body case 1, and a similar screw hole 30 is formed at a position that matches the cylinder 13, so that it can be used as a piping joint or a speed controller. etc., can be installed. A stopper bolt 31 is arranged on the front end surface of the front cover 11, and the retraction limit of the connecting plate 6, that is, the retraction limit of the piston 12 can be adjusted. There are 6 T-shaped grooves 32, 33, 34, 35 on the outer periphery of the case body 1.
．． 36 are formed in the longitudinal direction. In this embodiment, the detector 37 for detecting the position of the piston 12 is provided at two T-shaped @s
rs, se, bracket 40, and square nut 38.
39 to the side surface of the case body 1.

In the above configuration, when air with an appropriate pressure is supplied through the screw hole 30, the piston 12 is pushed forward by the air pressure, and at the same time, the piston rod 6 also moves together. The guide shaft 4 connected to the piston rod 6 by the connecting plate 6 also operates integrally with the piston rod 6. Piston rod 5 pushed out by air
moves while being guided by the stopper 18 and the resin ring 17 disposed on the piston 12, and stops after moving a predetermined stroke. Next, the supply of air through the screw hole 30 is stopped and the screw hole 30 is opened to the atmosphere. Next, when air with an appropriate pressure is supplied from the screw hole 29, it passes through the air flow path 23 and passes through the supply/discharge hole 24 to the stopper 1 in the cylinder 13.
8 and the front surface of the piston 12 which has been pushed out and is stopped.

The piston 12 is pushed back to the rear by the inflowing air, and at the same time, the piston rod 6, the connecting plate 6, and the guide shaft 4 are also pushed back to the rear. Since the screw hole 3o is open to the atmosphere, the piston 12 moves back to a position where the connecting plate 6 collides with the stopper bolt 31 and then stops. Based on the operating principle described above, the unit cylinder repeats reciprocating motion. In this embodiment, the piston rod 6 and the guide shaft 4 are connected by the connecting plate 6, so that the piston rod 6, which is the output part of the unit cylinder, can operate without rotating during reciprocating operation, and the guide shaft 4 Since it operates in unison with the movement direction, the rigidity against loads perpendicular to the direction of movement also increases. Furthermore, the position adjustment of the proximity switch 37 for checking the position of the ζ゛stone 12, in other words, the position of the connecting plate 6,
T-shaped grooves 35 and 36 formed on the outer peripheral side of the case body 1
The effect is that this can be easily done using the square oak (38, 39) and the bracket 40.

The transfer device is constructed using the following. The unit cylinder A is arranged so that its output part moves vertically in the -E direction, and the unit cylinder B is arranged so that its output part moves horizontally. Unit cylinders A and B are connected using a connecting plate of unit cylinder A and a connecting plate of unit cylinder B.

A pneumatic chuck D is attached to the tip of the unit cylinder B via an L-shaped mounting plate, and is used to grasp parts or products. The above-described configuration moves and supplies parts or products, but in this embodiment, two
unit cylinder A.

Since the T-shaped groove, the connecting plate, and the square nut are used to fasten B, there is an effect that the fastening position can be easily changed without changing the fixing position of the entire transfer structure.

In the above embodiment, only one guide shaft was used, but it is also possible to use two guide shafts with the cylinder in between, and the main body case is also rectangular, but it does not have to be rectangular. It is sufficient that the cylinder mechanism and the guide mechanism independent of the cylinder mechanism or cylinder rod are built into a common body.

As described above, according to the present invention, the following effects are produced.

■ The cylinder mechanism and guide mechanism are built into a common body, making the entire configuration simple and small.

■ Since the cylinder mechanism and guide mechanism are built into a common body, there is no need for external rotation prevention or reinforcement.

■ If a T-shaped groove is formed on the outer periphery of the case body, the fixing position can be easily changed to fix the unit cylinder body or the detector. Its industrial value is extremely large, as it can be manufactured using extruded materials and costs can be reduced.

[Brief explanation of the drawing]

Fig. 1(a) is a sectional view of a unit cylinder according to an embodiment of the present invention, Fig. 1(a) is a side view thereof, Fig. 2 is a cutaway perspective view of the same main part, and Fig. 3 is a usage state of the same embodiment. FIG. 4 is a perspective view of a conventional example. 1...Case body, 4...Guide shaft, 6...Piston rod, 6...
Connection plate, 7.8...Bearing section, 11...
...Front cover, 12... Piston, 13.
...Cylinder part, 26...Rear cover,
32, 33, 34, 36° 36...Groove, 38.
39...Natsuto.

Claims (3)

[Claims] (1) A piston and a piston rod that reciprocate;
The case has a guide shaft that reciprocates in parallel with the piston rod, a cylinder portion that slidably holds the piston and the piston rod, and a case that includes a bearing portion that slidably supports the guide shaft. The case is provided with an air supply hole that communicates air between the front and rear of the piston so that the piston moves back and forth,
Unit cylinder 0 in which the piston rod and the tip of the guide shaft are fixedly connected by a connecting plate. (2) The above-mentioned case consists of a case body made of a member that has the same cross-sectional shape in a direction perpendicular to the axial direction of the piston rod and guide shaft, and a front cover and a rear cover that close both end faces of the case body. A unit cylinder according to claim 1, comprising: (3) The case body has a cross-sectional shape such that an undercut groove is formed on the outer surface of the case body,
3. The unit cylinder according to claim 2, wherein a nut is fitted into said groove so as to be able to slide therein.