JPS63259204A - Device to supplying/exhausting air into/from inside elastic tube to generate motion - Google Patents

Abstract

PURPOSE:To enable reciprocation by supply/exhaust of the air into/from inside a tube by mounting one end of an elastic tube on both sides of a metal fitting and mounting a cover on the other end of the tube. CONSTITUTION:One end of an elastic bellows-shaped tube 2 is mounted on both sides of a metal fitting 1 and the other end of the tube 2 is equipped with a cover 3 which has 8 hole 4 to supply/exhaust air. Hereby, the metal fitting can be reciprocated by supplying air to the hole 4 for air supply/discharge or exhausting air from the hole 4. Further it can be made in such a constitution that the air inside the tube 2 is not released to the outside and it becomes suitable for a cylinder without dust.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for supplying and discharging air into and out of a telescoping tube to generate reciprocating motion and interlocking reciprocating rotation.

Conventionally, there are air cylinders with a piston inside the cylinder, but since the air inside the cylinder leaks from the rod part, it may not be possible to use it underwater or in a humid place because water gets into the cylinder. When used in a clean room for manufacturing, air leaks from the rod section, so the cover must be doubled and piping must be installed to exhaust the air outside the clean room.Additionally, using a rodless cylinder without a rod results in a complicated structure. Or, a magnet is built into the piston to move external hardware, but there are drawbacks such as a lack of moving power and the possibility of iron pieces sticking to the piston.

This invention was made to eliminate this drawback, and it generates interlocking movement by supplying and discharging air within a telescopic tube.
Let me explain this.

(Claim 1) A telescopic tube is tightly attached to both sides of the metal fitting.
Both ends of the tube are tightly attached to each cover 8 on a pair of covers held at an arbitrary interval by a holding rod. Holes for supplying and discharging air into and out of the tube are provided in the cover or tube.

(Claim 2) A shaft is rotatably attached to a metal fitting having air supply and exhaust holes. Attach the metal fitting tightly to the metal fitting fixed to the shaft.

(Claim 3) An embodiment according to Claim 1, in which the holding rod is inserted into a telescopic tube and a metal fitting is inserted into the outside of the telescopic tube, at both ends of the holding rod. Attach a pair of covers to the tube and hold the covers at a desired distance. Attach the end of a telescopic tube tightly to the cover. Provide holes in the cover or tube for supplying and discharging air into the tube.

(Claim 4) An embodiment according to Claim 1, in which a cover is closely attached to both sides of a telescoping tube, and an arbitrary number of holding rods are attached to the cover at an angle and freely in and out. ,
A hole for supplying and discharging air into the tube is provided in the cover or tube.

(Claim 5) This is an embodiment according to Claim 1, in which a hole is made in one side of the cover, and a shaft that fits in and out of the cover is joined to a metal fitting.

(Claim 6) This is an embodiment of claim 1, in which a hole is made in one side of the cover, and an in/out shaft that fits into the hole is joined to a metal fitting, so that the side through which the in/out shaft passes can be expanded and contracted. Double the tube.

(Claim 7) The present invention, which is an embodiment of Claim 1, in which a hole for supplying and discharging air into the tube is provided in the metal fitting, has the above-described functions and effects. 1, 2, 3, 6, (Claim 1) Fig. 1 has elastic bellows-like bellows on both sides of the fitting (1). Tube (2)
(2) is tightly attached, and the cover (3) has a female threaded hole (4) for supplying and exhausting air into the tube (3).
) Attach the metal fittings (1) freely to any number of holding rods (5) provided and attach the covers (3H) to both ends of the holding rods (5).
3), and attach the end of the tube to the cover (3) (3) tightly.

Figures 2 and 3 are versions of Figure 1, with Figure 2 having a holding rod (6) inside the tube, and Figure 3 having holding rods (5) and (6) installed. It is something that

Fig. 6 Fig. 6 shows the bellows-shaped tube in Fig. 1 as an expandable straight tube that does not expand or expand in length.
10) (10), and the straight tube (10) (10) may expand or stretch to the extent that it does not interfere with the function of the cylinder.

It can also be made into a straight tube that can be expanded and contracted.

Fig. 7, Fig. 8, Fig. 9, (Claim 3) This is an embodiment according to Claim 1, and Fig. 7 shows that the air pressure device expands only to the set diameter at the set air pressure. Insert the holding rod (6) into the elastic tube (11) and attach the metal fitting (1) to the outside of the tube (11).
A cover (3) (3) is provided at both ends of the holding rods (5) and (6), into which the tube can be inserted and moved freely, and has a female threaded hole (4) for supplying and exhausting air into and out of the tube. Cover (3
) Attach the end of the tube (11) tightly to (3).

Figure 8 The state in which the metal fitting (1) is divided into two and inserted.

Figure 9 The state in which the metal fitting (1) is inserted as a single piece.

The above are examples of claims 1 and 3,
Both are rodless cylinders with no rods, and air piping is connected to the air supply/exhaust hole (4) to supply air into one tube and exhaust air from the other tube. The metal fitting (1) moves in a straight line, and the metal fitting (1) has holes for attaching other devices, etc. to move other devices, and the air in the tube is repeatedly supplied and discharged to perform reciprocating motion. It is something that generates.

Figure 7 shows a state in which air is supplied to the left side of the tube (11) and as the tube expands, the metal fitting (1) moves to the right side. In this figure, the air in the right tube has already been removed. Although it is discharged, it may be discharged as the metal fitting (1) moves.

Figures 4 and 5 (Claim 2) A shaft (8) is attached using a ball bearing to a metal fitting (7) having a female threaded hole (4) for supplying and exhausting air to the inside of the tube. A metal fitting (9) fixed with a parallel key is attached to the mounting shaft (8) so that it can rotate freely. It is mounted closely.

This generates reciprocating rotational motion, and the tube (
2) The shaft (8) is interlocked with reciprocating rotation by supplying and discharging the air in (2).

10 and 11 (Claim 4) This is an embodiment according to Claim 1, in which a compression coil spring (12 ) on both sides of the tube (2).
3) Attach (3) tightly. Cover (3) (3) has a hole (15) for attaching another device, and attaches a holding rod (5) which is tilted with a spherical bearing (16) and can be freely moved in and out.

This is used by attaching it to another device using the cover (3) (3).As an example, as shown in Figure 12, this device is attached to the robot (14) and the chuck (13) is attached to the device.
If the chuck is attached directly to the robot, it would not be possible to assemble the item if the chuck is attached directly to the robot, such as when there is a large variation in the dimensions of the poet's position. When a robot transports an item, air is supplied into the tube (2) to fix the chuck, and when it is assembled, the chuck side that does not supply air is allowed to move smoothly.

The tube can also be a straight tube (10) that is expandable and retractable, and the number of tubes can be adjusted as required.

13 and 16 (Claim 5) This is an embodiment of the cover (3) described in Claim 1 (Claim 5).
Make a hole in one side of 3) and fit it into the shaft that goes in and out (1).
7) is joined to the metal fitting (1), and a screw for attaching other devices is provided at the tip of the shaft (17).

14 and 17 (Claim 6) This is an embodiment of the cover (3) described in Claim 1 (Claim 6).
Make a hole in one side of 3) and fit it into the shaft that goes in and out (1).
7) is joined to the metal fitting (1) and the extensible tube (2) or (10) on the side through which the shaft (17) passes is doubled and a screw for attaching other devices is provided at the tip of the shaft (17). It is.

15 and 18 (Claim 7) This is an embodiment according to Claim 1, in which a female threaded hole (4) for supplying and discharging air into the tube is connected to a metal fitting (Claim 7).
In the case of 1), the cover (3) is provided with screws for attaching other devices.

The above are examples of claims 5, 6, and 7, and FIGS. 14, 15, 17, and 18 are because the shafts that go in and out do not pass through the inside of the tube. The air inside the tube does not leak.

Next, explaining another embodiment, FIGS. 19 and 20 show
The threaded rod (18) is equipped with a brake (19) at the end of the threaded rod (18), and as the metal fitting (1) moves, the threaded rod (18) rotates, preventing the movement of the metal fitting (1). At a desired point, a brake (19) is used to stop the rotation of the threaded rod (18) and stop the movement of the metal fitting (1).

The threaded rod (18) may also be a ball screw or the like.

Figures 21, 22, and 23 show two holding rods (6) inside the tube, and Figure 23 shows an extensible tube (10) with an elliptical cross-sectional shape. .

24, 25, and 26 show a holding rod (6) having two parallel surfaces (a).

Figures 27, 28, 29, and 30 show that the bellows-shaped tube (2) has different diameters of peaks or valleys when it is expanded and when it is contracted, and it is held when it is compressed. Stick (5) (
6) Since the tube may interfere, a trough (b) is provided at the diameter of the crest, and a ridge (c) is provided at the radial portion of the trough. Figure 29 shows the area where interference occurs. This is what is shown.

Figures 31 to 38 show the other side of the telescopic straight tube (10), and Figure 31 shows the tube attached to the metal fitting (1) with a larger inner diameter.
The figure shows the wall thickness of the tube changed at arbitrary intervals, Figure 33 shows the tube with ring-shaped protrusions (d) provided at arbitrary intervals, and Figure 34 shows the ring-shaped protrusions (d) provided inside the tube at arbitrary intervals.
d) is provided in a spiral shape, Fig. 35 shows a case in which a ring (20) is provided, and Fig. 36 shows a case in which a coil (21) is provided.
), Figure m37 shows the plate-like ring part (e).
Fig. 38 shows a ring-shaped protrusion (d).
Figures 39, 40, and 41 are a combination of the plate-shaped ring portion (e) and the plate-shaped ring portion (e), and Figures 42, 43, and 44 are the tubes with tapered shapes. , 4th
Figure 5 shows a tube with a contact ring (22) made of a highly wear-resistant material inside the tube; Figure 46;
FIGS. 47, 48, 49, 50, and 51 show an example of a close fitting portion of the telescopic tube (2).

The device of the present invention can be supported using conventional methods such as a conventional cylinder foot type, flange type, trunnion type, or clevis type, rubber cushions or air cushions can be used as usual, and flexible tubes can be used with oil resistance. This allows it to be used with hydraulic cylinders, and as another embodiment, it can be combined with a telescopic tube on one side and a coil spring, allowing for a wide range of applications.

Since the method and device of the present invention are as described above, a rodless cylinder can be created with a simple structure, and the structure that prevents the air inside the tube from leaking to the outside can be easily created, and the number of sliding parts is far greater than that of conventional cylinders. It is suitable for cylinders without air pressure and has a wide range of applications.In addition, with conventional cylinders, the output is determined by the inner diameter of the cylinder, and the internal volume per stroke is also determined, so it can be used under conditions of constant air pressure and air flow rate. In this case, the output of the cylinder and the moving speed of the piston are constant, but with this device, the inner diameter of the tube can be made by changing the inner diameter of the part that tightly attaches to the moving fitting and the inner diameter of other parts, so even cylinders with the same output can have a large internal volume. Since it can be made small and small, high-speed and low-speed devices can be made, and if the diameter of the tube attached closely to the movable fitting can be variably adjusted, the output can also be varied.

Although the names in this text refer to metal fittings and scissor metal fittings, they can be made not only of metal but also of non-ferrous metals such as aluminum alloys. t) Expandable tubes can also be made by inserting a core.

[Brief explanation of the drawing]

1, 2, 3, and 6 are front partial sectional views of the present invention. FIG. 4 is a partial sectional plan view of the present invention, and FIG. 5 is a sectional view taken along the line AA in FIG. 4. FIG. 7 is a front partial sectional view showing another embodiment of the present invention, and FIGS. 8 and 9 are sectional views taken along the line n-B in FIG. 7. FIG. 10 is a front partial cross-sectional view showing another embodiment of the present invention, FIG. 11 is a cross-sectional view taken along the line C-C in FIG. 10, and FIG. 12 is a front view showing how the present invention is used. . Fig. 13, Fig. 14, Fig. 15, Fig. 16, Fig. 17,
FIG. 18 is a front partial sectional view showing another embodiment of the present invention. Fig. 19, Fig. 21, Fig. 24, Fig. 27, Fig. 28,
Figure 31, Figure 32, Figure 33, Figure 34, Figure 35,
Figure 36, Figure 37, Figure 38, Figure 39, Figure 40,
FIG. 41 is a front partial sectional view showing another embodiment of the present invention, FIG. 20 is a sectional view taken along line DD in FIG. 19, FIG. 22 is a sectional view taken along line EE in FIG. 21, and FIG. Figure 25 Figure 26 is the 24th
FF sectional view in the figure, Figures 29 and 30 are partially enlarged views,
Figures 42, 43, 44, and 45 are enlarged views of the contact ring, and Figures 46, 47, 49, and 51 are 1 part showing the close fitting part of the telescopic tube. The cross-sectional view, Figure 48, is the G-C cross-sectional view of Figures 46 and 47, and Figure 5.
Figure 0 is a sectional view taken along line H-)1 in Figure 49.

Claims (7)

[Claims] (1) A motion generating device characterized in that a telescopic tube is closely attached to both sides of a metal fitting, and both ends of the tube are closely attached to a pair of covers held at an arbitrary interval. (2) The shaft is rotatably attached to a metal fitting with holes for air supply and exhaust, and the metal fitting is fixed to the shaft, and a pair of extensible tubes are attached to the metal fitting with holes for air supply and exhaust in a circular shape, and the metal fitting is fixed to the shaft. A reciprocating rotational motion generator that is tightly attached to a metal fitting that is fixed to the. (3) Insert the holding rod into the expandable tube and insert the metal fittings on the outside of the expandable tube.
2. The motion generating device according to claim 1, wherein a pair of covers is attached and the ends of a retractable tube are tightly attached to the covers to hold the covers at an arbitrary interval. (4) The motion generating device according to claim 1, wherein a cover is tightly attached to both sides of a telescopic tube, and a holding rod is attached to the cover so that it can be freely moved in and out at an angle. (5) The motion generating device according to claim 1, wherein a hole is made in one side of the cover and an in/out shaft that fits into the hole is joined to a metal fitting. (6) A motion generating device according to claim 1, in which a hole is made in one side of the cover, and an ingress and egress shaft that fits into the hole is joined to a metal fitting, and the extensible tube on the side through which the egress and egress shaft passes is doubled. . (7) The motion generating device according to claim 1, wherein the metal fitting is provided with holes for supplying and discharging air to and from the inside of the tube.