JPH04117203U - rodless cylinder - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a rodless cylinder in which a tube for supplying and discharging pressure fluid to a fluid pressure device installed in a slider does not interfere with work or cause a reduction in drive efficiency. [Structure] The cylinder body 11 is provided with an axial flow path 21, a notched groove 22, and a folded passage 24, and one end of a tube 28 that reciprocates tightly in the flow path 21 is connected to a port 30 of the mover 15. . Second port 2 of cylinder body 11
The pressure fluid supplied from 3 flows through the flow path 21 and the tube 28.
is supplied to port 30 of mover 15 by. [Effect] Pressure fluid can be supplied and discharged from the port of the mover to the fluid pressure equipment that moves together with the mover.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a rodless cylinder.

0002

[Conventional technology]

A cylinder body and a piston that reciprocates within the cylinder tube of the cylinder body. and mechanically or magnetically coupled to the piston along the cylinder tube. Equipped with a piston and a mover that moves in synchronization, an integrated pressure partitioned by the piston A rodless cylinder that supplies and discharges pressure fluid to a chamber to reciprocate the piston and slider. is already known without any particular example.

0003 Conventionally, the mover 2 of the rodless cylinder 1 is equipped with another rodless cylinder 3 or the like. When installing and using fluid pressure equipment, the pressure chamber of rodless cylinder 1 must be Compressed air can be supplied and discharged from the end plates 4 and 4, but with the mover 2 One end is fixed to the pressure chamber of the rodless cylinder 3 that moves as shown in Figure 11. Supply and exhaust compressed air from the spiral tube 6 that has been removed, or as shown in Figure 12. In this case, the rodless cylinders 1 and 3 are provided with reels 8 and 8 having tubes 7. Compressed air is supplied and discharged from these tubes 7, 7. However, the spiral tube 6 has a durability problem due to repeated expansion and contraction. Not only that, but the expanding and contracting tube 6 gets in the way of work, while the reel 8 In addition to requiring space for installation, a spring for unwinding the tube 7 is required. It is necessary to provide a As a result, there is a problem that driving efficiency is reduced.

0004

[Problem that the idea aims to solve]

The problem to be solved by this invention is to supply pressure fluid to the fluid pressure equipment installed on the slider. The tube for supply and discharge is a lock that does not cause problems with work or reduce drive efficiency. Our purpose is to provide a dress cylinder.

[0005]

[Means to solve the problem]

In order to solve the above problems, the present invention includes a cylinder body and a cylinder body of the cylinder body. A piston that reciprocates within a tube and is mechanically or magnetically connected to the piston. and a mover that is connected to the piston and moves along the cylinder tube in synchronization with the piston. The piston and the slider are connected by supplying and discharging pressure fluid to a pair of pressure chambers separated by the piston. In a rodless cylinder that reciprocates the The slider is equipped with a flow path for supplying and discharging pressure fluid, and the slider is equipped with a fluid pressure A port for supplying and discharging pressure fluid to and from the equipment, and one end connected to the port and the above flow path. It is characterized by having a tube that reciprocates closely.

[0006] In addition, in order to solve the same problem, we have developed a coating made of a material with low friction on the inner surface of the flow path. -Ting is recommended.

[0007] Furthermore, in order to solve the same problem, the tube has an axial passage and a flow path. It is preferable to have an air supply piston that reciprocates closely.

[0008]

[Effect]

The pressure fluid supplied to the flow path of the rodless cylinder has one end connected to the port of the slider. A fluid pressure machine installed on the slider is connected to a tube that slides closely in the above flow path. It becomes possible to supply to the container. Therefore, the tube for supplying pressure fluid to the fluid pressure equipment is used together with the mover. Even when it moves back and forth, it does not interfere with work.

[0009] In addition, by coating the inner surface of the flow path with a material with low friction, The friction between the tube and the flow path is extremely low, increasing the durability of the tube. In addition, the reduction in drive efficiency of the rodless cylinder due to the reciprocating movement of the tube is minimized. can be made smaller.

0010

【Example】

1 to 3 show a first embodiment of the present invention, and the cylinder of this rodless cylinder is The cylinder body 11 includes a cylinder tube 12 and end plates 13a and 13b at both ends. A piston 14 that reciprocates within the cylinder tube 12, and a cylinder tube The mover 15 reciprocates along the cylinder tube 12 through the slit 16 of the cylinder tube 12. The slit 16 is integrally movably connected via a connecting portion 14a passing through the middle portion. The minute passes through the groove of the piston 13, and both ends are fixed to the end plates 13a and 13b. The end plate 13a, 13b is sealed with a seal belt 17. Port 19 for supplying and discharging compressed air to pressure chambers 18a and 18b divided by stone 13 a and 19b have been established.

[0011] As shown in FIGS. 1 and 3, the cylinder tube 12 is disconnected from the axial flow path 21. One end of the channel 21 is connected to a second port formed in the end plate 13a. The other end is an end plate 13b that connects the channel 21 and the notch groove 22. The channel 21 and the inner circumferential surface of the return passage 24 are coated with tetrafluoroethylene. It is coated with a low-friction material such as resin.

0012 One end of a tube 28 is attached to the mover 15 by an adapter 27. The tube 28, which reciprocates along the folded passage 24 and the flow passage 21, A sealing member 29 is attached to the outer periphery of the end to seal between the flow path 21 and the adapter. 27 communicates with the port 30 of the mover 15. Then, to port 30, mover 1 Compressed air is supplied to fluid pressure devices (not shown) such as fluid pressure actuators attached to 5. A piping 31 for supplying is connected.

[0013] Reference numeral 34 in FIG. 2 indicates cushion packings 35, 35 attached to the piston 14. The cushion ring 34 is shown to be inserted (only one is shown). When fitted into the cushion packing 35, the pressure chambers 18a and 18b are opened (not shown). It communicates with ports 19a and 19b through a bypass.

[0014] In the first embodiment, compressed air is supplied from the ports 19a and 19b to the pressure chambers 18a and 18b. When a pressure fluid such as air is supplied and discharged, the piston 14 and the slider 15 reciprocate together, and the The cushion ring 34 fits into the cushion packing 35 near the end of the stroke. When the engine is turned on, these are decelerated and stopped. In this case, the tube 28 attached to the mover 15 moves together with the mover 15. However, the space between the outer periphery of the tip of the tube 28 and the flow path 21 is sealed by the seal member 29. Since it is connected to the second port 23, it moves through the flow path 21 and the tube 28. Pressure fluid can be supplied to port 30 of child 15, and piping 31 is connected to port 30 of child 15. Since they move together, they do not interfere with your work. In addition, the inner peripheral surface of the flow path 21 etc. Since the tube is coated with a material with low friction, the reciprocating motion of the tube 28 is reduced. Minimize as much as possible the reduction in drive efficiency of rodless cylinders due to friction caused by be able to.

[0015] Note that in the illustrated example, the piston 14 and the mover 15 are not mechanically connected. However, a magnet array is installed between the piston and the slider, facing each other with the cylinder tube in between. It can also be a magnetic connection.

[0016] FIG. 4 shows a modification of the first embodiment, in which the cylinder chimney in the cylinder body 41 is A seal portion that seals the outer peripheral surface of the tube 43 in the axial flow path 21 of the tube 42 material 44 is attached. The other configurations and operations of the above modification are the same as those of the first embodiment.

[0017] FIG. 5 shows another embodiment of the tube, in which the tube 46 has a tip inside the flow path 21. The air supply piston 47 is provided with an air supply piston 47 that slides tightly between the flow passage 21 and the An axial passage 47a communicating with the tube 46 is formed. Other configurations and functions of the tube are the same as in the first embodiment.

[0018] 6 to 10 show a second embodiment of the present invention, which is similar to FIGS. 6 and 7. A first rodless cylinder 51 and a fluid pressure machine installed in its mover 54 shown in FIG. A second rodless cylinder 52 (see FIGS. 8 to 10) as an example of a container. The second rodless cylinder 52 is similar to that shown in FIGS. 11 and 12. , are attached in a direction perpendicular to the first rodless cylinder 51.

[0019] The cylinder tube 57 of the first rodless cylinder 51 is arranged in the vertical direction. The end plate 58a includes a pair of channels 21a, 21b and a cutout groove 22. The second ports 23a, 23b communicating with these flow paths 21a, 21b are connected to the end plate. The rate 58b is a folded part that connects the channels 21a, 21b and the notch groove 22 individually. It has passages 24a and 24b, respectively, and is slidably inserted into these passages. The tubes 28a and 28b have the same structure as the tube 28, and the movable element 5 4 to ports 60a and 60b, respectively, by vertical passages 59a and 59b. It's communicating.

[0020] On the other hand, the cylinder of the second rodless cylinder 52 whose details are shown in FIGS. The data tube 62 has a pair of channels 63a and 63b arranged in the vertical direction and a notched groove 64. The end plates 65a and 65b have channels 63a and 63b and a cutout groove 64. One of the flow paths 63a and 63b is The ends are closed by plugs and formed on the end plates 65a, 65b. The supply passages 67, 67 (only one shown) communicate with the pressure chamber (not shown). ing.

[0021] Then, these channels 63a, 63b and the return channels 66a, 66b are closely reciprocated. One end of the moving tubes 68a, 68b is connected to ports 69a, 69b of the mover 55. It is connected. Therefore, the ports 60a and 60b of the mover 54 and the mover 55 By connecting the ports 69a and 69b of the from the second ports 23a, 23b of the first rodless cylinder 51 to the second rodless cylinder 51. Pressure fluid can be supplied to and discharged from the pressure chamber of the cylinder 52.

[0022]

[Effect of the idea] The rodless cylinder of this invention is suitable for rodless cylinders in fluid pressure equipment installed on the slider. The flow path of the cylinder and the tube that moves together with the slider and reciprocates in the flow path. Pressure fluid can be supplied and discharged through the valve, so it can be used to supply and discharge pressure fluid to and from fluid pressure equipment. The tube does not get in the way of your work.

[0023] In addition, the inner surface of the flow path is coated with a material with low friction, so the The movement resistance of the tube is reduced, minimizing the reduction in drive efficiency due to friction. can do.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of essential parts of a first embodiment.

FIG. 2 is a longitudinal sectional view.

FIG. 3 is a longitudinal side view of FIG. 2;

FIG. 4 is a cross-sectional view of a modification of the first embodiment.

FIG. 5 is a plan view of another embodiment of the tube.

FIG. 6 is a cross-sectional view of the first cylinder in the second embodiment.

FIG. 7 is a front view as well.

FIG. 8 is a cross-sectional view of the second cylinder in the second embodiment.

FIG. 9 is a front view.

FIG. 10 is a longitudinal side view of the cylinder tube.

FIG. 11 is a plan view of an example of a known air supply mode.

FIG. 12 is a plan view of another air supply mode.

[Explanation of symbols]

11, 41 Cylinder body 12, 42, 57, 62 Cylinder tube 14 Piston 15, 54, 55 Mover 18a, 18b Pressure chamber 21, 21a, 21b, 63a, 63b Flow path 28, 28a, 28b, 43, 46, 68a ,68b
Tubes 30, 60a, 60b Port 47 Air supply piston 47a Passage 51 First rodless cylinder 52 Second rodless cylinder

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Masakichi Miura Win, 1-304-6 Akayamacho, Koshigaya City, Saitama Prefecture Gutown 201

Claims (3)

[Scope of utility model registration request] 1. A cylinder body, a piston that reciprocates within a cylinder tube of the cylinder body, and a piston that is mechanically or magnetically coupled to the piston and moves along the cylinder tube in synchronization with the piston. In the rodless cylinder, the cylinder body supplies pressurized fluid to the slider and reciprocates the piston and the slider by supplying and discharging pressure fluid to a pair of pressure chambers partitioned by a piston. The mover is provided with a port for supplying and discharging pressure fluid to a fluid pressure device installed on the mover, and the flow path is connected at one end to the port. A rodless cylinder characterized by being equipped with a tube that reciprocates closely. 2. The rodless cylinder according to claim 1, wherein the inner surface of the flow path is coated with a material having low friction. 3. The rodless cylinder according to claim 1, wherein the tube includes an air supply piston having an axial passage and reciprocating tightly in the flow passage.