JPS62106108A - Machine for allowing reciprocating motion of cylinder - Google Patents

Abstract

PURPOSE:To make the machine in the headline compact by setting an inner cylinder which has a piston inside in an outer cylinder which has its inside sealed by means of the inner cylinder which makes free sliding as its piston. CONSTITUTION:Ports 12, 12' are formed on an inner cylinder 5'' in which a piston 13 is hermfically fitted in order to hold a piston rod 15. A flange 17 is formed on the outer surface of the inner cylinder 5'' on the out face of which is set an outer cylinder 5''' regarding the flange 17 as its piston. After air is supplied to the inner cylinder 5'' and the piston rod 15 is displaced upward, the air is supplied to the outer cylinder 5''' so as to displace said inner cylinder 5'' upward. A plurality of cylinders are formed in one body by the above mechanism, and an automatic machine can be made compact.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The disclosed technology belongs to the technical field of advance/retreat devices using fluid cylinders used as actuators of various devices.

Therefore, in this invention, a piston is installed inside the cylinder so that it can slide in a sealed state, a fluid supply pump is connected to the cylinder, and either the cylinder or the piston is fixed, and the fluid is supplied. This invention relates to a cylinder advancing/retracting device that is used as an actuator that can be moved forward and backward by adjusting the cylinder.In particular, the invention relates to a cylinder advancing and retreating device that is used as an actuator that can move forward and backward by adjusting the cylinder. This is necessary for an invention related to a cylinder advancing/retracting device which is said to be

<Prior Art> Generally, in various types of mechanical devices, air cylinders, hydraulic cylinders, etc. connected to pumps for feeding fluid are used as actuators for powerful movements.

These cylinders are used, for example, in equipment 1 for assembling the V-shaped workpiece shown in Figure 3, and quickly and accurately convert the power of an air pump, etc. set (=I injury is caused.

To briefly explain the above-mentioned workpiece pulling device 1, the device 1 pulls the workpiece coarsely on the line 1. (On the side of the mother vJ2 to be sent, a free table 4 that can freely slide in the horizontal direction is supported on the upper surface of the support stand 3, and a cylinder advancing/retracting device is mounted on the free table 4. A double-acting air cylinder 5.5' is also installed, and the positioning device 6 and workpiece 7 are attached to the base material 2 by means of the air cylinder 5.5'. Support stand 3 in synchronization with the conveyance line
is transported, and the free table 4 on the upper surface of the support base 3 is slidable in the horizontal direction.
Then, the engagement pin 9 is raised via the double-acting air cylinder 5 and placed in the positioning hole 10 of the base material 2. After determining the relative position of the free table 4 with respect to the base material 2, the free table 4 is The rework 7 is mounted via a device 8 or a double-acting air cylinder 5' to raise the work 7 to the base material 2.
It is designed so that the installation can be done.

<Problems to be Solved by the Invention> However, (a)) With the conventional cylinder advancing/retracting device, when attempting to perform various operations in one automatic machine, an actuator must be installed for each operation. However, the installation of multiple cylinder advance/retract devices occupies a large amount of space on the automatic machine, resulting in the inconvenience that the automatic LatM inevitably becomes larger.

In addition, when a cylinder advancement/retraction device is installed in an automatic machine for each operation, the automatic machine becomes complicated and its external size increases, resulting in an increase in the cost of the automatic machine as a product. There were also advantages.

The purpose of this invention is to solve the problems of the cylinder advancing/retracting device based on the above-mentioned prior art, and to make an automatic machine equipped with a plurality of cylinders that perform various operations more compact and reduce the product cost. In this way, the above-mentioned patent claims are intended to promote an excellent cylinder advancing/retracting device that is beneficial to the field of fluid pressure application in the mechanical industry. The structure of this invention, gist of the scope, is as follows:
In order to solve the above-mentioned problem, a large number of cylinders can be integrated into one structure by making an inner cylinder with a piston inside and an outer cylinder which is sealed and slidable, using the inner cylinder as a piston. This device takes technical measures that allow it to perform various actuator operations without occupying a large installation space.

<Example> Next, an example of the present invention will be described below based on FIG. Incidentally, the same reference numerals are given to the same parts as in the conventional embodiment shown in FIG. 3 for explanation.

1' is a device for assembling the workpiece, and as in the conventional mode shown in FIG.
is conveyed in synchronization with the base material 2, and a positioning device 6' and a device 8' for attaching the work 7 to the base material 2 are supported on the support stand 3 via a free table 4.

Moreover, the support stand 3 has a linear bearing 11.1 on its upper surface.
A free table 4 which is slidable in the front-back direction and the width direction is held through the 1..., and on the upper surface of the free table 4 there is a double-acting inner cylinder 5'' extending in the vertical direction. is permanently installed.

Ports 12 and 1 which communicate with the inside of the cylinder 5' are provided on the side surfaces of both upper and lower ends of the inner cylinder 5''.
A piston 13 is hermetically fitted inside the cylinder 5'', and a piston rod 15 having an engagement pin 14 at its upper end is held.

A sleeve 16 is fitted into the upper inner side of the inner cylinder 5'' to restrict upward displacement of the piston 13, and ports 12 and 12' are connected to an air pump (not shown). High pressure air is allowed to flow into the space.

Furthermore, a flange 17 with a set diameter is formed on the outer surface of the inner cylinder 5' over the circumferential surface of a predetermined height, and the outer cylinder 5'', which uses the flange 17 as a piston, is hermetically sealed. Ports 12', 12'' are formed on the side surfaces of both the upper and lower ends of the cylinder 5'' to communicate with the inside thereof and to be connected to an air pump (not shown).

A bracket 18 extending horizontally is fixed at a predetermined position on the side surface of the outer sill 5'', and a mounting device 8 for fixing the work 7 to the base material 2 is mounted on the upper surface of the bracket 18.
', 8' are retained.

For installation, the device 8' has an elevating device 20 that supports a nut runner 19 at its upper end, and a bolt 21 is gripped by one nut runner and screwed into a nut 22 through the workpiece 7 and base material 2. It is made to be done.

In the above configuration, the workpiece is assembled to the base material 2 by the device 1.
When assembling the workpiece 7 by ', the support stand 3 is conveyed below the base material 2 in synchronization with the base material 2 conveyed on the line. - The outer cylinder 51 can be freely displaced in the front-rear direction and the width direction on the support base 3, and the outer cylinder 51 is arranged so that the inner cylinder 5'' is positioned with its piston 13 downward. They are each set so that they are positioned below.・Furthermore, the bolt 21 is held in advance by the nut runner 19 of the installation @8', and the workpiece 7 is supported by the bolt 21 with the bolt 21 inserted through a hole (not shown). ~
be done.

When the support table 3 is fed synchronously with 712 on the line, high-pressure air is supplied to the inner cylinder 5' on the free table 4 from the air pump (not shown) through the port 12' on the lower side. Accordingly, the piston 13 and
At the same time as the piston rod 15 is displaced upward, the air inside the cylinder 51 above the piston 13 is discharged from the port 12 above the inner cylinder 5'' and the piston rod 15
The engagement pin 14 of the upper part is inserted into the positioning hole 10 drilled in a predetermined portion of the base material 2, and as a result, the workpiece assembly is performed so that the relative positions of the device 1' and the base material 2 are set in a predetermined position.
~ will be done.

Further, in this state, high-pressure air is supplied to the outer cylinder 5'' from an air pump (not shown) through the port 12'' on the upper side of the cylinder 5'', thereby causing the outer cylinder 5'' to move against the fixed inner cylinder 5''. At the same time as the outer shell 5'' is slid upward, air is discharged from the port 12'. Mount it close to the location.

Then, in this state, the nut runner 19 of the device 8' is installed.
When the lifting device 20 is raised at the same time as the workpiece 7 is rotated, the bolt 21 or the nut 22 on the upper surface of the base material (J2) is tightened with the workpiece 7 interposed therein.
can be fixed securely and quickly to the underside of the

Furthermore, when the assembly of the workpiece 7 to the base material 2 is completed, the assembly device 8' is returned to the starting state, and high-pressure air is supplied from an air pump (not shown) to the outer cylinder 5N through the lower port 12'. At the same time, the upper board 1-1
2' is opened, and the cylinder 5M is moved to the free table 4.
The inner cylinder 5'' is slid downward relative to the inner cylinder 5'' fixed above, and high pressure air is supplied to the inner cylinder 5'' from an air pump (not shown) through the port 12 on the upper side of the inner cylinder 5'', and at the same time the inner cylinder 5'' is moved downward. The port 12' is opened, and the piston 13 and piston rod 15 are slid downward and returned to their original ready state.

It goes without saying that the embodiments of the present invention are not limited to the above-mentioned embodiments. For example, as shown in FIG. 5'' may be fixed on the pace 23 so that the screw rod 15 and the inner cylinder 5'' are displaced in opposite directions.Also, the cylinder is limited to a double structure. Various configurations can be adopted, including multiplex structures such as three-ply or four-ply structures.

<Effects of the Invention> As described above, according to the present invention, by integrally forming a plurality of cylinders that basically perform various operations, it is possible to downsize the equipped automatic machine and reduce the product cost. It has the excellent effect of making it possible.

That is, an inner cylinder equipped with a piston is covered with an outer cylinder which is secretly slidable by using the inner cylinder as a screw, and two or more cylinders are integrated into one hYj)'4. By doing this, it can operate as a variety of actuators like before, and
An excellent effect is achieved in that the cylinder advancing/retracting device can be reliably made compact.

In addition, even if a large number of cylinder advancing and retracting devices that perform various operations are installed in an automatic machine, it is possible to avoid complicating the interior of the automatic pasturing machine and increasing its external size, thereby reducing production costs. It also has the excellent effect of being able to.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view showing one embodiment of the invention, FIG. 2 is a half sectional front view showing another embodiment of the invention, and FIG.
The figure is a partially sectional front view showing a conventional ring. 13...Piston, 5"...Inner silling, 5
1 outer cylinder

Claims (1)

[Claims] In a cylinder advancing/retracting device in which a piston is sealed and slidably housed inside a cylinder, one of the cylinder and the piston is fixed, and a driving pump is connected to the cylinder so that the cylinder can move back and forth. ,
A cylinder advancing/retracting device characterized in that an inner cylinder in which a piston is housed is covered with an outer cylinder having the inner cylinder as a piston.