JPS63278569A - Magnetic cylinder and iron removing machine - Google Patents

Abstract

PURPOSE:To attract and convey a magnetic substance by hermetically sealing a moving body in a closed nonmagnetic barrel, through which the magnetic flux of the moving body provided in the barrel having magnetic force, and free to slide in the longitudinal direction of the barrel, and providing the outlet and inlet for a pressure fluid on both sides of the closed barrel in the moving direction of the moving body. CONSTITUTION:When the moving body 1 is at the left end, an end plate 2b is in contact with the moving body 1. Since the magnetic flux from the moving body 1 pierces the outer shell of the closed barrel 2 and forms a magnetic field, iron pieces 8, etc., are attracted on the outer surface of the barrel 2. When the P port of a solenoid valve 7 communicates with the A port, a pressure fluid enters a cylinder chamber on the end plate 2b side from the outlet and inlet 5, and the moving body 1 is moved in the direction becoming more distant from the end plate 2b. As a result, the iron pieces 8, etc., attracted on the end plate 2b are dropped from the end plate 2b since the magnetic field moves away long with the moving body 1. The iron pieces 8, etc., attracted on the outer periphery of the closed barrel 2 are moved to the right along with the movement of the magnetic field due to the movement of the moving body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] "Industrial Application Field" The present invention relates to a novel magnetic cylinder using fluid pressure and a magnet, and an iron remover using the magnetic cylinder.

"Conventional technology and its problems" A magnet attracts iron pieces or iron powder to collect iron pieces or iron powder,
By separating the iron pieces from the magnet, iron pieces, iron powder, or both in the raw material are removed.

It is conceivable to move the entire magnet for this removal, but moving the magnet in and out of the raw material may cause abrasion of the magnet, so it is not appropriate. It is not easy to remove iron pieces and iron powder from magnets.

Alternatively, a magnet is used to attract an iron member and support the member. Electromagnets are suitable for attaching and detaching iron members to magnets, but electromagnets are equipped with coils and are not suitable for use at high temperatures, in water, or in the presence of chemical substances, and special measures are required.

The first and second inventions of the present application solve the above-mentioned conventional problems, and can also attract and convey magnetic materials such as iron powder or iron pieces without bringing the magnet into direct contact with iron pieces or raw materials containing iron powder. Another object of the present invention is to provide a magnetic cylinder for attaching and detaching magnetic members.

Conventional iron removers have been equipped with various types of magnets, such as magnetic rolls or permanent magnets, in the raw material passageway where iron pieces or iron powder (hereinafter referred to as iron pieces, etc.) are mixed. The device is stopped and the iron pieces are removed from the magnet roll or magnet before the number of iron pieces attracted by the magnet increases and the amount of attraction no longer decreases.

Although iron removers using such magnets can increase the time interval for removing iron pieces to a certain extent with magnetic rolls, automation is difficult, and the iron pieces attracted to the iron remover must be removed periodically by hand. Therefore, the equipment must be stopped during that time.

The fifth invention of the present application aims to eliminate the drawbacks of the conventional iron removing machine described above, and to provide a durable iron removing machine that is easy to automate.

[Structure of the invention]

"Means for Solving the Problem" The first invention of the present application is a closed cylindrical body made of a non-magnetic material through which the magnetic flux of a movable body having a magnetic force penetrates, and the movable body is placed in a closed cylindrical body in the longitudinal direction of the closed cylindrical body. It is a magnetic cylinder that is sealed and slidable, and has an inlet and an outlet for pressurized fluid in a sealed cylindrical body on both sides in the direction of movement of the moving body.

The second invention of the present application is a sealed cylindrical body made of a non-magnetic material through which the magnetic flux of the movable body having a magnetic force penetrates, and the movable body is slidably sealed in the longitudinal direction of the closed cylindrical body, and the movable body is movable. A magnetic cylinder in which a pressure fluid inlet/outlet is provided in a closed cylindrical body on one side in the direction of movement of the body, and the other side is open to the outside and a spring member is inserted between the end plate of the moving body and the closed cylindrical body. be.

The third invention of the present application includes all of the cylinder 1 or the second invention of the present application, in which an annular member is fixed to the outer periphery of the closed cylindrical body in the middle in the longitudinal direction, and the end of the closed cylindrical body is closer to the part where the annular member is provided. This is an iron removal machine whose side can be accessed into and out of the raw material passageway for raw materials containing iron pieces or iron powder.

"Function" (1) First Invention Function A The moving body moves by supplying pressure fluid. The magnetic material, such as a piece of iron, on the outer periphery of the sealed cylindrical body is attracted by the moving body of the magnet inside, so that the piece of iron or the like moves along the outer periphery of the sealed cylindrical body in the longitudinal direction as the moving body moves.

Effect B The movement of the moving body is caused by the supply of pressure fluid as in Effect A.

When a movable body is brought close to the end plate of the sealed cylindrical body, magnetic flux emitted from the movable body passes through the end plate. Since the magnetic material member, for example, the iron member, in contact with the end plate is attracted, the sealed cylindrical body can move while supporting the iron member. When the movable body is moved in a direction away from the end plate, the magnetic flux passing through the end plate to the outside is removed, and the iron member is separated from the end plate, so that the iron member can be transported.

(2) Second Invention Effect A The moving body moves against the spring member by compressing the spring member by supplying the pressure fluid.

The magnetic material, such as a piece of iron, on the outer periphery of the sealed cylindrical body is attracted by the moving body of the magnet inside, so that the piece of iron or the like moves along the outer periphery of the sealed cylindrical body in the longitudinal direction as the moving body moves.

When the pressure fluid is released to the non-pressure side, the spring member moves the movable body in the opposite direction, and the iron pieces on the outer periphery of the closed cylindrical body move in the opposite direction.

Effect B: When the movable body is brought closer to the end plate of the sealed cylindrical body by the spring force of the spring member, the magnetic flux emitted from the movable body passes through the end plate. Since a magnetic member such as an iron member in contact with the end plate is attracted, the sealed cylindrical body can move while supporting the iron member.

When a pressure fluid is sent to a cylinder chamber between a cylinder chamber equipped with a spring member and a movable body against a spring member to move the movable body away from the end plate, magnetic flux exits through the end plate. The iron member separates from the end plate.

(5) By placing the third aspect of the moving body in the part of the closed cylindrical body protruding from the raw material passage side, iron pieces and the like in the raw material are sucked into the part.

The closed cylindrical body can be withdrawn from the raw material passage without moving the movable body. Then, it moves out of the raw material passage together with the iron pieces etc. that have been sucked into the closed cylindrical body.

Now, when the movable body is further moved in the same direction inside the closed cylindrical body, the iron pieces etc. that are attracted to the outer periphery of the closed cylindrical body follow the movable body and move. When the movable body passes by the annular member, the iron pieces are blocked by the annular member and remain gathered in one place. When the moving body leaves the annular member, the iron pieces are removed from the magnetic field and fall due to gravity.

"Example" Embodiments of the present invention will be described below with reference to the drawings.

First, an embodiment of the first invention (specific invention) of the present application will be described.

FIG. 1 shows a longitudinal section. The closed cylindrical body 2 made of a non-magnetic material such as thin stainless steel, through which the magnetic flux of the moving body 1 made of a permanent magnet provided inside passes through, has a cylindrical shape, for example, and is housed so as to be slidable in the longitudinal direction of the closed cylindrical body 2. has been done. The space between the cylindrical movable body 1 having a magnetic force and the sealed cylindrical body is sealed by an O IJ song that fits into a circumferential O-ring groove 3 on the outer periphery of the movable body 1. Pressure fluid inlets and outlets 5 and 6 are provided at or near the longitudinal ends of the closed cylindrical body 2 . In this embodiment, one end plate 2a is provided with an entrance/exit 6, and the other end plate 213 is a suction surface. Entrance/exit 5 is end plate 2
It opens on the cylindrical outer periphery near (b).The inlets and outlets 5 and 6 are connected to the A and B ports of the four-way switching solenoid valve 7 by piping, and the P port communicates with the pressure fluid source. Leads to the no-pressure area.

Next, the effect will be explained. When the moving body 1 is at the left end in the figure, the end plate 2b and the moving body 1 are in contact with each other. Since the magnetic flux from the movable body 1 penetrates the outer shell of the sealed cylindrical body 2 and creates a magnetic field, the iron pieces 8 are attracted to the outer surface of the sealed cylindrical body 2. Now, when the P port and A port of the solenoid valve 7 are made to communicate, the pressure fluid enters the cylinder chamber on the end plate 2b side from the inlet/outlet 5,
The moving body 1 is moved in a direction away from the end plate 2b. As the moving body 1 moves from the end plate 2b, iron pieces 8 that are attracted to the end plate 2b are removed from the end plate 2 because the magnetic field leaves together with the moving body 1.
It falls off from b.

The iron piece 8 adsorbed on the outer periphery of the closed cylindrical body 2 is the movable body 1
It moves to the right in FIG. 1 in accordance with the movement of the magnetic field accompanying the movement of .

When the electromagnetic valve 7 is switched to communicate the P port and the B port, the pressure fluid enters the cylinder chamber on the end plate 2a side from the inlet/outlet 6, and the movable body 1 moves in a direction away from the end plate 2a.

As the movable body 1 moves to the left, the magnetic field exiting to the outside through the outer periphery of the closed cylindrical body 2 also moves in the same direction, so the iron piece 8 moves to the left in FIG. The moving body 1 is the end plate 2b
When the end plate 2b comes into contact with the end plate 2b, a piece of iron or the like 8 can be attracted to the outside of the end plate 2b.

In this way, the magnetic cylinder can transport the iron pieces 8 in its longitudinal direction.

As shown in FIG. 2, if there is a magnetic member such as an iron member 9 made of iron outside the end plate 2b while the moving body 1 is in contact with the end plate 2b, the magnetic flux of the moving body 1 will be transferred to the end plate 2b. The iron member 9 is exposed to the outside through the end plate 2b, and the iron member 9 is present in the resulting magnetic field, so the iron member 9 is attracted to the end plate 2b.

Therefore, when the P port and A port of the solenoid valve 7 are made to communicate, the pressure fluid enters the cylinder chamber on the end plate 2b side from the inlet/outlet 5,
The moving body 1 resists the magnetic attraction force ζ between the moving body 1 and the iron member 9.
moves in the direction away from the end plate 2b. As a result, the magnetic field co-located with the moving body 1 moves and leaves the iron member 9, so that the iron member 9 separates from the end plate 2b.

In this way, the magnetic cylinder allows the magnetic member to be attached to and removed from the end plate just like an electromagnet.

As explained above, according to the first invention of the present application, there is an effect that the magnetic material can be conveyed in the longitudinal direction of the sealed cylindrical body, and there is also an effect that the magnetic material member can be attached and detached from the end plate.

In the embodiment shown in FIG. 1, if it is undesirable to have iron pieces 8 attached to the end plate 21:1, the end plate 2b should be removed so that the magnetic flux of the moving body 1 does not reach the end plate 2b, as shown by the two-dot chain line in FIG. A non-magnetic isolation member 1o is provided to separate the movable body 1 from the moving body 1. This isolation member 10 is either the end plate 2b or the movable body 1.
It is appropriate to fix this. Alternatively, the end plate 2b may be made sufficiently thick.

The second invention of the present application will be explained. FIG. 3 shows a spring offset type magnetic cylinder.

Moving body 1, sealed cylindrical body 2.0 ring groove 3.0 ring 4,
The entrances and exits 5 and 6 are the same as in the first invention. The solenoid valve 7 is a three-way switching valve that allows communication between the P port and the A boat or between the A boat and the T boat.
A compression coil spring 11 is inserted into the closed cylindrical body 2 in between. The inlet/outlet 6 is open to the atmosphere when the fluid is air, and communicates with a tank of a hydraulic pressure source when the fluid is pressure oil.

When no pressure fluid is supplied, the movable body 1 is pressed against the end plate 2b by the force of the compression coil spring 11. When the movable body 1 is at the left end in the figure, the magnetic flux from the piston 1 penetrates the outer shell of the sealed cylindrical body 2 and creates a magnetic field, so the iron pieces 8 are exposed to the outside of the sealed cylindrical body 2. adsorbs to. When the P port and A port of the solenoid valve 7 are made to communicate with each other, the pressure fluid enters the cylinder chamber on the end plate 2b side from the inlet/outlet port 5, and moves the moving body 1 away from the end plate 2b against the compression coil spring 11. move it to

As the movable body 1 moves from the end plate 2b, the iron pieces 8 adhering to the end plate 2b side fall off from the end plate 2b because the magnetic field leaves together with the movable body 1.

The iron piece 8 adsorbed on the outer periphery of the closed cylindrical body 2 is the movable body 1
It moves to the right in FIG. 3 in accordance with the movement of the magnetic field accompanying the movement of .

When the solenoid valve 7 is switched to connect the A port and the T port, the spring force of the compression coil spring 11 moves the movable body 1 to the end plate 2a.
The pressure fluid flows out from the inlet/outlet 5 via the solenoid valve 7. As the movable body 1 moves in the direction away from the end plate 2a, the magnetic field exiting to the outside through the outer periphery of the closed cylindrical body 2 also moves in the same direction, so the iron pieces 8 move to the left in FIG. When the movable body 1 reaches the left-hand end and the end plate 2b and the movable body 1 come into contact with each other, the iron piece or the like 8 can be attracted to the end plate 2b.

In this way, the magnetic cylinder can transport the iron pieces 8 in its longitudinal direction.

As shown in FIG. 4, if there is a magnetic member such as an iron member 9 made of iron outside the end plate 2b while the moving body 1 is in contact with the end plate 2b, the magnetic flux of the moving body 1 will be transferred to the end plate 2b. Since the iron member 9 is present in the magnetic field generated by the magnetic field, the iron member 9 is attracted to the end plate 2b.

Therefore, when the P boat and A port of the solenoid valve 7 are made to communicate, the pressure fluid enters the cylinder chamber on the end plate 2b side from the inlet/outlet 5.
The movable body 1 moves in a direction away from the end plate 2b against the magnetic attraction force between the movable body 1 and the iron member 9 and the spring force of the compression coil spring 11. As a result, the magnetic field moves together with the moving body 1 and leaves the iron member 9, so that the iron member 9 is attached to the end plate 2.
move away from b.

Such a positive magnetic cylinder allows a magnetic member to be attached to and removed from the end plate as if it were an electromagnet.

In the embodiment shown in FIG. 5, if it is not desirable for the iron piece 8 to stick to the end plate 2b, move the end plate 2b so that the magnetic flux of the moving body 1 does not reach the end plate 2b, as shown by the two-dot chain line in FIG. A non-magnetic isolation member 10 is provided to separate the bodies 1 from each other. This isolation member 10 is suitably fixed to either the end plate 2b or the movable body 1. Alternatively, the end plate 2b may be made thicker.

An embodiment of the third invention of the present application will be described.

The third invention of the present application includes all of the first invention or the second invention. An embodiment including all of the first invention will be described. FIG. 5 is a longitudinal sectional view of an embodiment of the third invention including the first invention. In the figure, 1 is a magnetic moving body, 2 is a sealed cylindrical body made of thin stainless steel pipe, and 6 is a Q provided on the outer periphery of the moving body 1 to seal between the moving body 1 and the sealed cylindrical body 2.
0-ring groove for accommodating the IJ song; 5 is a pressure fluid inlet/outlet provided on one side of the moving body 1 in the moving direction; 6 is a pressurized fluid inlet/outlet provided in the end plate 2a on the other side of the moving body 1 in the moving direction. , 7 is a four-way switching solenoid valve whose A and B boats are piped to the inlet/outlet 5.6.

An annular member 12 is fixed to the outer periphery of the closed cylindrical body 2 at the middle in the longitudinal direction. The annular member 12 closes the opening 15 in the wall 14 of the raw material passage 13, and the distal end side of the closed cylindrical body 2 with the end plate 2b protrudes into the raw material passage 13. A reciprocating cylinder 17 having a piston rod 16 rigidly connected to the end plate 2a
is fixed in line with a magnetic cylinder generally designated by numeral 18. The magnetic cylinder 18 with an annular member 12 is supported by the reciprocating cylinder 17, but the distance between the end plate 2a of the sealed cylindrical body 2 and the annular member 12 is lengthened so that this part is guided by a guide member. It's okay.

In the above, the stroke length of the reciprocating cylinder 17 is set to be 1 or more when the entire length 1 portion of the magnetic cylinder 18 on the distal end side of the annular member 12 is taken out of the raw material passage 13, If it can be retracted a short distance from the wall 14, the stroke should be 1 or less. This point will become clearer in the explanation of the action that follows.

Next, I will explain the effect. During the iron removal operation, the piston of the reciprocating cylinder 17 is at the left end, and as shown in the figure, the tip side of the sealed cylindrical body 2 is protruding into the raw material passage 13, and the movable body 1 is located at the end plate 2.
It has come to the b side and is stationary. When the raw material containing iron pieces 8 passes through the raw material passage 15, the iron pieces 8 in the raw material are attracted by the magnetism of the moving body 1 on the tip side of the closed cylindrical body 1 and are attracted and suspended around the closed cylindrical body 2. .

When the reciprocating cylinder 17 is urged to the right, the piston rod 16 moves to the right, and the magnetic cylinder 18 carrying the iron piece 8 follows the annular member 12 and retreats toward the outside of the raw material passage 13 through the opening 15.

Stop it here. Next, when the electromagnetic valve 7 is switched to connect the A port and the P port and supply pressure fluid to the cylinder chamber on the end plate 2b side through the inlet/outlet 5, the movable body 1 moves to the right.

(1゛) The amount of retraction of the magnetic cylinder 18 is determined by the annular member 1 shown in the figure.
2 to the end plate 2b, the iron piece 8 moves in the longitudinal direction along the circumference of the closed cylindrical body 2 as the movable body 1 moves to the right, and the movable body 1 moves toward the annular member 12. As the iron pieces 8 pass through the position, they are stopped by the annular member 12 and collected in one place. When the movable body 1 further moves to the right and leaves the position of the annular member 12, the magnetic force of the movable body 1 no longer reaches the iron pieces 8, and the iron pieces 8 fall to the outside of the raw material passage 13 with the wall 14, and the iron pieces etc. 8 is removed from the raw materials and collected.

The solenoid valve 7 is switched to communicate the P port and the B port, and pressure fluid is sent to the cylinder chamber on the end plate 2a side to move the movable body 1 to the left, and at the same time move the piston of the reciprocating cylinder 17 and the piston rod 16 to the left. Then, the magnetic cylinder 18 provided with the annular member 12 is moved to the left and restored. By repeating this process, the iron pieces 8 can be sorted out and removed from the raw material containing the iron pieces 8 passing through the raw material passage 13. Automation is easily achieved by sequentially controlling the above operations.

(2) When the retreat amount is larger than the distance 1 from the illustrated annular member 12 to the end plate 2b, when the retreat amount is smaller than the distance 1, the iron piece 8 adsorbed to the end surface of the end plate 2b is moved to the moving body 1. leaves the end plate 2b and falls into the raw material passage 13. To avoid this, see Figures 1 and 3.
Although the isolation member 10 shown in the figure may be provided, the retraction amount of the magnetic cylinder 18 is made greater than 1, that is, the stroke of the reciprocating cylinder 17 is made greater than 1.

As a result, the iron pieces 8 adhering to the end plate 2b also separate and fall when the movable body 1 leaves the end plate 2b outside the wall 14 of the raw material passage 16. The other effects are the same as the effect (1) when the amount of retreat is smaller than distance 1, so the explanation will be omitted.

When the second invention is used in the sixth invention, the magnetic cylinder 18 in FIG. 5 is changed to a spring offset type, and the piping is the same as that in FIG. Omitted.

[Effect of exclamation]

The first invention is as follows: (1) Small pieces of magnetic material or magnetic powder can be moved in the longitudinal direction of the outer periphery of the closed cylindrical body.

(2) Magnetic material can be attached and detached from the end plate of the sealed cylindrical body.

(3) Since there is no electrical wiring and it is operated using pressure fluid, it can be used under a wide range of environments.

(4) Simple configuration and durability.

In addition to the effects of the first invention, the second invention allows the movable body to be brought to the safe side by the spring member even if the pressure fluid supply system is stopped due to a failure.

The third invention is capable of moving small pieces of magnetic material or magnetic powder in the longitudinal direction of the outer periphery of a sealed cylindrical body, and collecting the small pieces or powder at the position of an annular member and making them stay in one place, and then magnetically moving the small pieces or magnetic powder. It is designed so that it can be separated from the cylinder. (1) It is durable because there are no relative sliding parts as an iron remover.

(2) Only a part of the closed cylindrical body protrudes into the raw material passage, so it is difficult to penetrate the raw material.

[Brief explanation of the drawing]

1 and 2 are longitudinal cross-sectional views of the embodiment of the first invention of the present application, FIGS. 3 and 4 are longitudinal sectional views of the embodiment of the second invention of the present application, and FIG. 5 is a longitudinal sectional view of the embodiment of the second invention of the present application. FIG. 3 is a vertical cross-sectional view of an embodiment of the third invention. 1... Moving body 2... Sealed cylindrical body 2a, 2b... End plate 6... 0 ring groove 4... 0 ring 5.4... Inlet/outlet 7... Solenoid valve 8... Iron piece etc. 9... Iron Part 10...
Isolation member 11... Compression coil spring 12... Annular member 1S... Raw material passage 14... φ wall 15... Opening 16
・・Piston rod 17・・Reciprocating cylinder 18・・
magnetic cylinder.

Claims (1)

[Claims] 1. The movable body is sealed and slidable in the longitudinal direction of the closed cylindrical body in a closed cylindrical body made of a non-magnetic material through which the magnetic flux of the movable body having a magnetic force is penetrated. A magnetic cylinder having an inlet and an outlet for pressurized fluid in a sealed cylindrical body on both sides of the moving direction of the moving body. 2. The movable body is provided in a closed cylindrical body made of a non-magnetic material through which the magnetic flux of the movable body having a magnetic force penetrates, and the movable body is sealed and slidable in the longitudinal direction of the closed cylindrical body, and the movable body is moved. A magnetic cylinder in which a pressure fluid inlet/outlet is provided in a closed cylindrical body on one side of the direction, the other side is open to the outside, and a spring member is inserted between the moving body and the end plate of the closed cylindrical body. 3. The movable body is provided in a sealed cylindrical body made of a non-magnetic material through which the magnetic flux of the movable body having a magnetic force penetrates, and the movable body is sealed and slidable in the longitudinal direction of the closed cylindrical body, and the movable body is moved. The movable body is placed in a magnetic cylinder with an inlet/outlet for pressure fluid in a closed cylindrical body on both sides of the direction, or a closed cylindrical body made of a non-magnetic material through which the magnetic flux of the movable body with magnetic force penetrates. is sealed and slidable in the longitudinal direction, and an inlet/outlet for pressure fluid is provided in the sealed cylindrical body on one side in the direction of movement of the movable body;
The other side has a magnetic cylinder that is open to the outside and has a spring member inserted between the moving body and the end plate of the sealed cylindrical body, and the annular member is fixed to the outer periphery of the sealed cylindrical body in the middle of the longitudinal direction. An iron removal machine in which the distal end side of the closed cylindrical body beyond the annular member is provided so as to be able to enter and exit the raw material passage containing iron pieces or iron powder.