JPH04113305U - Magnetic cylinder device - Google Patents

Abstract

(57) [Summary] [Purpose] To achieve a thinner magnetic cylinder device, increase the magnetic coupling force between the piston and slide table, and increase the thrust force by increasing the pressure-receiving area of the piston. [Structure] A piston 5 is housed in a cylinder tube 3 so as to be freely displaceable along the axial direction, and the piston 5 is magnetically coupled to the piston 5 via the cylinder tube 3, and the piston 5 is magnetically coupled to the piston 5 as the piston 5 is displaced. This magnetic cylinder device includes a slide table 6 that is displaced on the outer peripheral surface of a cylinder tube 3, and the cylinder tube 3 and the piston 5 each have a flat cross section in the radial direction.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a magnetic cylinder device, in particular, for example, by compressed air, etc. Effective when applied to magnetic cylinder devices such as actuated rodless cylinder devices. Regarding technology.

0002

[Conventional technology]

As a magnetic cylinder device, it can be freely displaced along the axial direction inside the cylinder tube. A piston is housed in the piston, and a magnetic field is applied to the piston through the cylinder tube. The outer peripheral surface of the cylinder tube is displaced along with the displacement of the piston. A structure is known that is equipped with a slide table.

0003

[Problem that the idea aims to solve]

By the way, in the magnetic cylinder device as described above, the piston and The radial cross section of the cylinder tube is perfectly circular, allowing for thinner equipment. is being prevented.

0004 In addition, a magnet is used as a magnetic coupling means on the piston and slide table side. etc. are restricted by the perfect circular shape of the piston and cylinder tube. increases the magnetic coupling force between the piston and slide table. development is being prevented.

[0005] Furthermore, an increase in thrust force due to an increase in the pressure-receiving area of the piston is also hindered.

[0006] The purpose of this invention is to make the device thinner and to reduce the magnetic force between the piston and slide table. It is possible to improve the thrust by increasing the coupling force and increasing the pressure receiving area of the piston. The purpose of the present invention is to provide a magnetic cylinder device that can be used.

[0007] The foregoing and other objects and novel features of the present invention are detailed in the description and appendices of this specification. This will become clear from the accompanying drawings.

[0008]

[Means to solve the problem]

Among the devices disclosed in this application, a brief overview of typical ones is as follows. ,It is as follows.

[0009] In other words, the structure of the magnetic cylinder device of the present invention has an axial direction inside the cylinder tube. a piston housed so as to be freely displaceable along the direction; The cylinder tube is magnetically coupled through the tube, and the cylinder tube accompanies the displacement of the piston. A magnetic cylinder device equipped with a slide table that is displaced on the outer peripheral surface of the tube. radial cross sections of the cylinder tube and the piston are each flat; It has a structure with a certain shape.

0010 In this case, guide rails are provided on both sides of the outer peripheral surface of the cylinder tube. The slide table and the A guide bearing is interposed between the guide rail and the slide table in front. It is supported via the guide bearing and guided along the guide rail for change. It is possible to have a structure in which the

[0011] Further, the operation of both ends of the cylinder tube partitioned by the piston is also provided. A working fluid chamber and a pair of fluid ports that supply working fluid to the working fluid chamber, respectively. A flow path is formed in the guide rail along the axial direction thereof, and the flow path One of the fluid ports and the working fluid chamber are communicated with each other through a pair of The fluid port may be arranged centrally at one end of the cylinder tube. can be done.

0012 Further, a position detection device for detecting the position of the slide table is provided on the guide rail. It is possible to have a structure in which a position is provided.

[0013]

[Effect]

According to the above-mentioned means, the radial direction of the cylinder tube and the piston is This cylinder tube and piston have flat cross sections. By flattening the ton, the entire device can be made thinner. Compared to a piston with a perfect circular cross section and the same diameter as the width of the piston, As a result, the thrust of the piston can be increased. Ru.

[0014] Further, the cylinder tube and the cylinder tube each have a flat cross section in the radial direction; The piston allows the radial movement of the magnetic coupling means of the piston and the slide table. The cross section can be made flat to correspond to the cylinder tube and piston. As a result, a magnetic field with a perfect circular cross section and the same diameter as the width of the flattened magnetic coupling means is obtained. The length of the outer circumference of the magnetic coupling means is larger than the length of the outer circumference (circumference) of the magnetic coupling means. This increases the magnetic coupling force between the piston and slide table. You can make it bigger.

[0015] In this case, guide rails are provided on both sides of the outer peripheral surface of the cylinder tube. The slide table and the A guide bearing is interposed between the guide rail and the slide table in front. It is supported via the guide bearing and guided along the guide rail for change. If the structure is such that gravity, torque, and thrust are generated when the slide table is displaced, etc. are supported by guide bearings, and as a result, the cylinder tube The sliding table can be made non-contact or the sliding friction can be reduced. This allows smooth operation of the idle table.

[0016] Further, the operation of both ends of the cylinder tube partitioned by the piston is also provided. A working fluid chamber and a pair of fluid ports that supply working fluid to the working fluid chamber, respectively. A flow path is formed in the guide rail along the axial direction thereof, and the flow path One of the fluid ports and the working fluid chamber are communicated with each other through a pair of The fluid port may be arranged centrally at one end of the cylinder tube. Then, by effectively utilizing the guide rail to form a flow path, the cylinder of the fluid port It is possible to concentrate on one end of the tube.

[0017] Furthermore, position detection detects the position of the slide table on the guide rail. If the structure is equipped with a device, the position detection device can be installed by effectively utilizing the guide rail. The position of the slide table can be detected by installing the slide table.

[0018]

【Example】

Fig. 1 is a longitudinal sectional view showing a magnetic cylinder device which is an embodiment of the present invention, and Fig. FIG. 3 is a cross-sectional view of the magnetic cylinder device of FIG.

[0019] As shown in Fig. 1, the magnetic cylinder device of this embodiment is operated by compressed air. It is a double-acting type cylinder device, and both ends are closed by caps 1 and 2. The cylinder tube 3 is located inside the cylinder tube 3, and the cylinder tube 3 is displaced along the axial direction. The cylinder tube 3 is freely accommodated, and the inside of the cylinder tube 3 is partitioned into working fluid chambers 4A and 4B. The piston 5 is magnetically coupled to the piston 5 via the cylinder tube 3. The outer peripheral surface of the cylinder tube 3 is displaced along with the displacement of the piston 5. It is equipped with a slide table 6.

[0020] On both sides of the outer peripheral surface of the cylinder tube 3, there are provided caps connected to the caps 1 and 2, respectively. The guide rails 7 and 8 are parallel to the cylinder tube 3 at a predetermined interval. It is arranged.

[0021] Further, guide bearings 9, 9 are arranged on both outer surfaces of the slide table 6. , these guide bearings 9, 9 are formed on both inner surfaces of the guide rails 7, 8. By running on the guide bearing grooves 7A and 8A, the slide table 6 It is supported by rings 9, 9 and is guided along the axial direction of guide rails 7, 8 to be displaced. It is now possible to

[0022] Next, a bolt 10 for fine stroke adjustment of the piston 5 is attached to the caps 1 and 2. are respectively provided, and a mounting hole 11 is formed therethrough.

[0023] In addition, the caps 1 and 2 are provided with a supply that communicates with the operating fluid chambers 4A and 4B, respectively. The exhaust ports 12A and 12B (fluid ports) are opened and one end of the cylinder tube 3 is opened. The cylinder tube 3 of the supply/discharge ports 12A and 12B is centrally arranged on the side. In order to concentrate the flow toward one end, the flow path 13 is arranged along the axial direction within the guide rail 7. The supply/discharge port 12B communicates with the working fluid chamber 4B through this flow path 13. It is.

[0024] In addition, inside the other guide rail 8, the position of the slide table 6 is controlled magnetically. A magnetic sensor 14 (position detection device) is provided for detecting The position of the guide rail 8 along the axial direction can be adjusted.

[0025] As shown in FIG. 2, the cylinder tube 3 and piston 5 of this embodiment are The cross section in the radial direction is oval, and each has a flat shape.

[0026] In addition, there are A magnetic coupling means for magnetically coupling the two via the cylinder tube 3 is used. Magnets 5A, 6A and yokes 5B, 6B are provided, respectively. The ports 5A, 6A and the yokes 5B, 6B are connected to the cylinder tube 3 and piston described above. In response to the flattening of the stone 5, the radial cross section is made into an oval ring shape, resulting in a flat shape. has been done.

[0027] Next, the operation of this embodiment will be explained.

[0028] For example, in the state shown in FIG. When body pressure is supplied to the working fluid chamber 4A, the piston 5 is displaced toward the cap 2, and this Along with the displacement of the piston 5, the slide table 6 is displaced toward the cap 2. .

[0029] Next, fluid pressure such as compressed air is operated from the supply/discharge port 12B through the flow path 13. When the fluid is supplied to the fluid chamber 4B, the piston 5, which had been displaced toward the cap 2, moves to the cap 2. With the displacement of the piston 5, the slide table 6 moves toward the cap. Displaced to the pu 1 side.

[0030] The magnetic cylinder device of this embodiment is operated in this manner.

[0031] In this case, in this embodiment, the diameters of the cylinder tube 3 and piston 5 are Since the cross section in each direction is flat, the cylinder tube 3 and By flattening the piston 5 and the piston 5, the entire device can be made thinner. Compared to a piston with a perfectly circular cross section that has the same diameter as the width of the flattened piston 5, the piston The pressure receiving area of the piston 5 can be increased, and as a result, the thrust of the piston 5 can be improved. can be achieved.

[0032] In addition, in response to the flattened cylinder tube 3 and piston 5, a piston is also provided. Magnets 5A and 6 as magnetic coupling means for the ton 5 and the slide table 6 A and the yokes 5B and 6B are flattened, so that the flattened magnet A magnet with a perfect circular cross section and the same diameter as the width of the cuts 5A, 6A and the yokes 5B, 6B. Based on the outer circumference (circumference) of the magnet and yoke, magnets 5A, 6A and the yoke are Since the outer circumference length of the arcs 5B and 6B can be increased, the pistons 5 and 6B can be made larger. and the magnetic coupling force between the slide tables 6 can be increased.

[0033] Furthermore, guide rails 7 and 8 are provided on both sides of the outer peripheral surface of the cylinder tube 3. A slide table 6 and guide rails 7, 8 are arranged parallel to the tube 3. Guide bearings 9, 9 are interposed between the slide table 6 and the guide bearings. It is supported via rings 9, 9 and is guided along guide rails 7, 8 to be displaced. Due to this, gravity, torque, thrust, etc. when the slide table 6 is displaced is supported by the guide bearings 9, 9, and as a result, the cylinder tube 3 The slide table 6 can be made non-contact or the sliding friction can be reduced. , smooth displacement of the slide table 6 can be achieved.

[0034] Further, a flow path 13 is formed in the guide rail 7 along its axial direction, and this flow path 13, the supply/discharge port 12B and the working fluid chamber 4B are communicated with each other, and a pair of Supply and discharge ports 12A and 12B are arranged centrally at one end of the cylinder tube 3. Therefore, by effectively utilizing the guide rail 7 to form the flow path 13, the supply/discharge port 12 A, 12B can be concentrated on one end side of the cylinder tube 3.

[0035] Furthermore, a magnetic sensor 1 for detecting the position of the slide table 6 is provided on the guide rail 8. 4, the magnetic sensor 14 can be installed by effectively utilizing the guide rail 8. Depending on the position, the position of the slide table 6 can be detected.

[0036] Above, the invention made by the present inventor was specifically explained based on the examples. The present invention is not limited to the above embodiments, and may be modified without departing from the gist thereof. Needless to say, it can be changed.

[0037]

[Effect of the idea]

Among the devices disclosed in this application, the effects obtained by typical ones are briefly explained. A simple explanation is as follows.

[0038] (1) The cylinder tube and the piston each have a flat cross section in the radial direction. By flattening the cylinder tube and piston, This allows the entire device to be made thinner, and the width of the flattened piston Increasing the pressure receiving area of the piston compared to a piston with the same diameter and a perfectly circular cross section. As a result, the thrust of the piston can be increased.

[0039] (2) The cylinder tube and the piston each have a flat cross section in the radial direction. A radial section of the magnetic coupling means of the piston and the slide table is achieved by the stone. The surface can be made flat to correspond to the cylinder tube and piston, As a result, a magnetic wire having a perfect circular cross section with the same diameter as the width of the flattened magnetic coupling means is obtained. The length of the outer circumference of the magnetic coupling means is greater than the length of the outer circumference (circumference) of the coupling means. This increases the magnetic coupling force between the piston and slide table. can be done.

[0040] (3) In the above case, guide rails are provided on both sides of the outer peripheral surface of the cylinder tube. is arranged parallel to the cylinder tube, and the slide table is arranged parallel to the cylinder tube. A guide bearing is interposed between the guide rail and the slide table. The bull is supported via the guide bearing and guided along the guide rail. If the structure is such that the slide table is displaced, gravity and torque are The engine and thrust forces are supported by the guide bearing, and as a result, the cylinder tube It is possible to make the slide table non-contact with the blade or reduce sliding friction. Therefore, smooth operation of the slide table can be achieved.

[0041] (4) In the above case, the cylinder tube partitioned by the piston a working fluid chamber at both ends of the inner chamber, and a section for supplying working fluid to the working fluid chambers, respectively. A flow path is formed in the guide rail along its axial direction. one of the fluid ports and the working fluid chamber communicate with each other via this flow path. through which the pair of fluid ports are centrally arranged on one end side of the cylinder tube. If the structure is such that the guide rail is used effectively to form a flow path, the fluid port It is possible to concentrate the parts on one end of the cylinder tube.

[0042] (5) In the above case, detect the position of the slide table on the guide rail If the structure is equipped with a position detection device, the effective use of guide rails will By installing a position detection device, it becomes possible to detect the position of the slide table.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing a magnetic cylinder device that is an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the magnetic cylinder device.

[Explanation of symbols]

1 cap 2 cap 3 Cylinder tube 4A Operating fluid chamber 4B Operating fluid chamber 5 Piston 5A magnet 5B York 6 Slide table 6A magnet 6B York 7 Guide rail 7A rail groove 8 Guide rail 8A rail groove 9 Guide bearing 10 Stroke fine adjustment bolt 11 Mounting hole 12A supply/discharge port (fluid port) 12B Supply/discharge port (fluid port) 13 Flow path 14 Magnetic sensor

Claims (4)

[Scope of utility model registration request] Claims: 1. A piston displaceably housed in a cylinder tube along the axial direction; magnetically coupled to the piston via the cylinder tube; 1. A magnetic cylinder device comprising a slide table whose outer peripheral surface is displaced, wherein the cylinder tube and the piston each have a flat cross section in a radial direction. 2. Guide rails are disposed parallel to the cylinder tube on both sides of the outer peripheral surface of the cylinder tube, and a guide bearing is interposed between the slide table and the guide rail, and 2. The magnetic cylinder device according to claim 1, wherein the slide table is supported via the guide bearing and is guided and displaced along the guide rail. 3. The cylinder tube includes a working fluid chamber at both ends in the cylinder tube partitioned by the piston, and a pair of fluid ports for supplying working fluid to the working fluid chambers, respectively, and the cylinder tube has a working fluid chamber in the guide rail. A flow path is formed along the axial direction, and one of the fluid ports and the working fluid chamber are communicated with each other through the flow path, and the pair of fluid ports are centrally arranged at one end of the cylinder tube. 3. The magnetic cylinder device according to claim 2, further comprising a magnetic cylinder device. 4. The magnetic cylinder device according to claim 2, wherein the guide rail is provided with a position detection device for detecting the position of the slide table.