JPS63295312A - Fluid pressure slide table device - Google Patents

Abstract

PURPOSE:To increase sliding amount in limited space, in a fluid pressure slide table to be employed in factory automation, by coupling a plurality of fluid pressure cylinders in parallel and in series such that strokes of respective cylinders are added to provide stroke of table. CONSTITUTION:Under the condition shown by dot and dash line where fluid pressure cylinders 7, 8 stretched fully, fluid is fed through a path 131 into a fluid pressure chamber 121 of the cylinder 7 while discharged from a fluid chamber 122 through a path 132. Consequently, a cylinder 11 moves to the right so as to move the table 5 to the right through a coupling board 15 and the fluid cylinder 8 and position the table 5 in the center of a base 1. When fluid is fed into the fluid chamber 191 of the fluid cylinder 8 and discharged from a fluid chamber 192 so as to move a cylinder 18 to the right, the table 5 is further moved to the right and positioned as shown by solid line. With such arrangement, moving amount of table can be increased with respect to the entire length of device.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hydraulic slide table device mainly used in the field of factory automation.

[Conventional technology]

2. Description of the Related Art Hydraulic slide table devices have conventionally existed in which a slide table is slidably displaced on a base while being guided by a guide rod by a fluid pressure drive mechanism having a hydraulic cylinder device as a component.

In such a fluid pressure slide table device, the fluid pressure cylinder device is installed at -a in such a manner that it extends further outward from the base, and the slide table is moved only within the length of the base by the extension and contraction movement of the rod. The structure is such that the slider is slidably displaced.

[Problem that the invention seeks to solve]

Therefore, in the conventional device, the range of sliding displacement of the slide table was small with respect to the entire length of the device including the fluid pressure cylinder device.

Therefore, the device becomes large in size and requires a large space for installing the device, relative to the required amount of sliding displacement of the slide table. In order to avoid such an increase in size, some machines have been miniaturized by being equipped with a speed increasing means such as a special chain, but these have the disadvantage that the speed increasing mechanism is complicated and is inconvenient to handle.

The purpose of the present invention is to solve the above-mentioned problems, and to provide a fluid pressure system with a simple structure and easy to handle, which can make the sliding displacement N (stroke) of the slide table as large as possible over the entire length of the device. The present invention aims to provide a slide table device.

[Means for solving problems]

The means for solving the above problem will be explained using FIG. 6, the drive mechanism 6 has a configuration in which a plurality of fluid pressure cylinder devices 7.8 are arranged in parallel, and the stroke of the slide table 5 corresponds to each fluid pressure. It is characterized in that the plurality of fluid pressure cylinder devices 7.8 are connected in series so that the strokes of the cylinder devices 7.8 are added.

[Effect]

Since the fluid pressure cylinder devices 7.8 are arranged in parallel on the base 1, the fluid pressure cylinder devices 7.8 do not protrude further outward from the base 1, and the overall length of the device is reduced. It can be configured to have approximately the entire length of the base 1. Also,
so that the stroke of the slide table 5 is the sum of the strokes of each hydraulic cylinder device 7.8.
Since the plurality of fluid pressure cylinder devices 7.8 are connected in series, the slide table 5 can be adjusted by appropriately determining the number of fluid pressure cylinder devices 7.8 and the stroke of each device 7.8. It is possible to make the stroke approximately equal to the entire length of the base 1.

〔Example〕

Your Highness, the invention will now be explained on the basis of embodiments with reference to the drawings.

FIGS. 1(a) and 1(b) are a front view and a plan view showing a first embodiment of the apparatus of the present invention.

In the figure, reference numeral 1 denotes a base consisting of a rectangular base plate 2 and side plates 3.3 raised at both ends thereof. A cylindrical guide body 4.4 is sandwiched between the side plates 3.3 and relatively above the side plates 3.3.
are constructed in parallel.

The guide body 4.4 is inserted into a guide hole (not shown) formed on the lower surface of the slide table 5, and is located on the base plate 2 that supports the slide table 5 in a slidable manner, and is located on the side plate 3.3. A fluid pressure drive mechanism 6 is disposed between them. This fluid pressure drive mechanism 6 has a structure in which a plurality of fluid pressure cylinder devices 7.8 are stacked on the plywood 2. They are connected in series so that the strokes of the pressure cylinder devices 7 and 8 are added.

The fluid pressure drive mechanism 6 of this example will be explained in more detail below.

The first stage (initial stage) fluid pressure cylinder device 7 has a side plate 3.3.
It consists of a rod 10 with each end of the rod 10 installed and fixed thereon, and a piston 9 fixed in the middle in the longitudinal direction, and a cylinder 11 surrounding the piston 9. This device 7 is of a double-acting type, and fluid pressure chambers 121 and 122 are formed on both sides of the piston 9, and the area of the pressure receiving portion on each side of the piston 9 is set to be the same. The rod 10 is bored with fluid passages 131, 132 that open independently into each fluid pressure chamber 121, 122 from each end towards the piston 9, and the side plate 3.3 has these fluid passages 131, 132. Communication ports 141 and 142 with external devices are formed in such a manner that they extend. This contact point 1411
By supplying and discharging pressure fluid from an external device through 42, the cylinder 11 is displaced from side to side along the rod 10.

The second stage (final stage) fluid pressure cylinder device 8 is fixed by connecting a rod 1 to a connecting plate 15 fixed to one end surface of the cylinder 11.
It is formed by fixing one end of 6 with a bolt.

This fluid pressure cylinder device 8 is the fluid pressure cylinder device 7.
The rod 16 is parallel to and stacked vertically.
The main part is composed of a piston 17 fixed at the center of the piston 17, and a cylinder 18 surrounding the piston 17. Similarly to the fluid pressure cylinder device 7, fluid pressure chambers 191 and 192 are formed inside the cylinder 18 and on each side of the piston 17, and the piston 1
7. The area of the pressure receiving portion on each side is set to be the same. rod 1
The other end of the cylinder 6 is fixedly connected to a support plate 20 that is slidably guided by a guide 4.4 and another rod 10, and suppresses relative displacement between the cylinder 18 and the rod 16. It is. Further, two fluid passages 211 and 212 are formed in a portion 16a of the rod 16 from the support plate 20 side toward the piston 17, and each fluid chamber 191 and 192 is formed in a portion 16a of the rod 16.
They each open independently. This fluid passage 211
．． By supplying and discharging pressure fluid from an external device to and from 212, the cylinder 18 of the fluid pressure cylinder device 8 is displaced from side to side in the figure.

The cylinder 18 of the second stage fluid pressure cylinder device 8 in the fluid pressure drive mechanism 6 configured as described above and the slide table 5 are connected by, for example, bolting the bottom surface of the slide table 5 and the top surface of the cylinder 18. , connected and fixed.

Furthermore, the total stroke of each hydraulic cylinder device 7.8 is set to be large enough to displace the slide table 5 over substantially the entire length of the base 1.

The operation of the above embodiment device is as follows. When the two fluid pressure cylinder devices 7.8 are both fully moved to the left in the figure, that is, when the slide table 5 is at the position indicated by the two-dot chain line, a fluid passage 131 is formed in the fluid pressure chamber 121.
Pressure fluid is supplied from an external device through the pressure fluid chamber 122, etc., while the other pressure fluid chamber 122 is communicated with the fluid passage 132 on the discharge side. As a result, the cylinder 11 of the first stage fluid pressure cylinder device 7 is displaced to the right, and this displacement is transmitted to the slide table 5 via the connecting plate 15 and the second stage fluid pressure cylinder device 8. It is displaced at the same speed as the cylinder 18.

When the cylinder 11 is fully displaced to the right, it will slide.
The table 5 is located approximately at the center of the base 1. To further displace the slide table 5 to the right, pressurized fluid is supplied from the external device to the fluid pressure chamber 191 through the fluid passage 211 in the same manner as described above. During this time, the fluid pressure chamber 192 is communicated with the fluid passage 212 on the discharge side. As a result, the cylinder 18 of the second stage fluid pressure cylinder device 8 is displaced to the right, and the slide table 5 is displaced at the same time. When the cylinder 18 is fully displaced, the slide table 5 will stop at the position indicated by the solid line in the figure.

Contrary to the above, when sliding the slide table 5 to the left, each part is operated in the opposite manner to the above.

Here, since the pressure receiving area of the piston 9.17 of each fluid pressure cylinder device 7.8 is the same, when using oil as the fluid, for example, the flow rate is the same throughout the entire stroke range of the slide table 5. By continuing to supply oil to the hydraulic cylinder device 7.8, the slide table 5 is displaced at a constant speed over the entire stroke range. In addition, when oil is supplied to two hydraulic cylinder devices 7 and 8 at the same time in the same flow and amount, the slide rate is lower than when oil is supplied to a single hydraulic cylinder device 7 or 8.
Table 5 will be displaced at exactly twice the speed.

And this means that each fluid passage 131.132.211
．． This means that the displacement speed of the slide table 5 can be changed easily, accurately, and greatly by simply opening and closing the slide table 212.

In addition, a fluid passage 131 bored in the fixed rod 10.
Since pressure fluid is supplied and discharged from the fluid pressure chambers 121 and 122 from 132, there is no need to connect a flexible pressure fluid supply and discharge pipe to a movable part such as the cylinder 11, and this eliminates the possibility of damage to the supply and discharge pipe. can be suppressed and safety can be increased.

Furthermore, if the cylinder 11.18 of each fluid pressure cylinder device 7.8 is displaceable as in this example, each fluid pressure cylinder device 7.8 is installed on the base 1 and the fluid pressure cylinder device 8 is This allows the slide table 5 to be fixed easily.

In the above example, the fluid pressure cylinder devices 7.8 are arranged vertically, but it is also possible to arrange them horizontally as shown in FIG. FIG. 5A shows a state in which the slide table 5 has been displaced to the leftmost end, and FIG. 3B shows a state in which the slide table 5 has been displaced to the rightmost end. There is the advantage that the height of the device constructed from this can be reduced.

In addition, if it is possible to allow the displacement speed of the slide table 5 to fluctuate, the rod portion 16a located on the right side of the piston 17 of the second stage fluid pressure cylinder device 8 in FIG. 1(a), It is also possible to omit the support plate 20 and the like, and to provide a configuration in which fluid passages are provided in place of the fluid passages 211 and 212 at different positions.

FIGS. 3(a) and 3(b) show a second embodiment of the device of the present invention,
(a) is a diagram showing a state in which the slide table 5 is displaced to the leftmost end, and (b) is a diagram showing a state in which the slide table 5 is displaced to the rightmost end. In the figure, the fluid pressure drive mechanism 6 is composed of a first stage fluid pressure cylinder device 7, a middle stage fluid pressure cylinder device 30, and a final stage fluid pressure cylinder device 8. A slide table 5 is connected and fixed. These hydraulic cylinder devices 7.8.30 are located on the base 1 and are located on the side plate 3.
．． The cylinders of the fluid pressure cylinder device located in the lower stage are connected in series by integrally connecting the pistons of the fluid pressure cylinder device located in the upper stage, and the first stage fluid pressure cylinder device 7 is that rod 10
is fixed to the base 1, and the final stage fluid pressure cylinder device 8 has the cylinder 8 fixedly connected to the slide table 5. Note that the number of middle-stage fluid pressure cylinder devices 30 is not limited to one, and can be arbitrarily determined as necessary.

In this way, by providing a plurality of fluid pressure cylinder devices 7.8.30, it is possible to displace the slide table 5 over almost the entire length of the base 1 even if the base 1 has an arbitrary length. Become.

A plurality of hydraulic cylinder devices 7.8.30 can also be connected as shown in FIG. Figure (a) shows the slide
This figure shows a state in which the table 5 has been displaced to the leftmost end, and FIG. 5B shows a state in which the slide table 5 has been displaced to the rightmost end. With this arrangement, the fluid pressure cylinder device 8 fixedly connected to the slide table 5 is located in the center, resulting in excellent balance of the device.

Furthermore, depending on the surrounding situation, a plurality of fluid pressure cylinder devices 7 may be used.
．． If 8.30 cannot be connected as described above, a configuration as shown in FIG. 5, for example, may be used. Figure (a)
1 shows a state in which the slide table 5 has been displaced to the leftmost end, and FIG. 2B shows a state in which the slide table 5 has been displaced to the rightmost end.

In the drawings, parts that perform the same functions are designated by the same reference numerals, and explanations thereof will be omitted.

〔Effect of the invention〕

As is clear from the above, according to the present invention, the slide table 5 can be slid over almost the entire length of the device including the fluid pressure cylinder device 7,8,30 without using speed increasing means such as a special chain. As a result, the device becomes smaller than the conventional device with respect to the stroke of the slide table 5, and the installation space is reduced, and the miniaturization also provides various benefits such as reduced manufacturing costs and ease of handling. This results in secondary effects.

[Brief explanation of the drawing]

The figures show the device of the present invention, FIGS. 1(a) and 1(b) are a front view and a plan view of the first embodiment, and FIGS. 2(a) and 2(b) are modified versions of the first embodiment. A state explanatory diagram showing an example, each front view of FIG. 3(a) and (b) is a state explanatory diagram of the second embodiment, and each front view of FIGS. 4(a) and (b) is a state explanatory diagram of the second embodiment, respectively. 5(a)(b)
) are state explanatory diagrams each showing a modification of the second embodiment. (Symbol) 1... Base 4... Guide body 5... Slide table 6... Fluid pressure drive mechanism 7.8.30... Fluid pressure cylinder device 9.17...
Piston 11.18...Cylinder 10...Rod

Claims (1)

[Scope of Claims] 1. A fluid pressure slide table device in which a slide table is slidably displaced on a base by a fluid pressure drive mechanism while being guided by a guide body, wherein the drive mechanism includes a plurality of fluid pressure cylinders. A configuration in which the devices are arranged in parallel, and the plurality of fluid pressure cylinder devices are connected in series so that the stroke of the slide table is the sum of the strokes of each fluid pressure cylinder device. Fluid pressure slide table device. 2. The fluid pressure slide table device according to claim 1, wherein each fluid pressure cylinder device is a double-acting type, and the pressure receiving area of the piston of all the fluid pressure cylinder devices is the same. . 3. The fluid pressure drive mechanism has a configuration in which the cylinder of one fluid pressure cylinder device and the piston of another fluid pressure cylinder device are integrally connected, and the first stage fluid pressure cylinder device is fixed by mounting a rod on the base, and the final stage 3. The hydraulic slide table device according to claim 1, wherein the stage hydraulic cylinder device has a cylinder fixedly connected to the slide table. 4. Claims 1 to 3, characterized in that all the fluid pressure chambers of the fluid pressure cylinder device constituting the fluid pressure drive mechanism have independent fluid passages for supplying and discharging pressure fluid. The fluid pressure slide table device according to any one of paragraphs. 5. Each fluid pressure chamber of the first-stage fluid pressure cylinder device communicates with a fluid passage for supplying and discharging pressurized fluid, which is independently bored in the rod. Hydraulic slide table device.