JPH0253563A - Surface working device for wire rod like stock - Google Patents

Abstract

PURPOSE:To prevent the leakage of abrasives from an insertion hole by providing an electromagnet in a container in opposition to the insertion hole for a work of the container and providing a suction face for sucking the abrasives projected from a projection nozzle on this electromagnet. CONSTITUTION:Granular abrasives are projected from a projection nozzle 16 for the working part of a work 31 which is inserted into a container 1 through insertion ports 8, 9 to execute working. In this case, the projected abrasives are sucked to the suction face of an electromagnet 10 with the electromagnetic attraction force of the electromagnet 10 provided in the container 1 in opposition to the insertion holes 8, 9. So the abrasives are not leaked to the external part of the container 1 by passing through the insertion holes 8, 9. Consequently, working can be executed by inserting the working part of a work only into the container 1 through the insertion hole from the external part of the container 1, which can be miniaturized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a surface processing device for cleaning the surface of a wire bar-shaped material.

(Prior Art) When performing plastic working such as rolling or rolling on a wire rod-shaped material, the material must be heated to a predetermined processing temperature in advance. Methods for heating materials include gas furnace heating, electric furnace heating, and heating the material by passing electricity through it. In the latter case of electrical heating, if the material has an oxide attached or an oxide film formed on its surface, and the oxide or oxide film has low electrical conductivity, sufficient heating cannot be achieved by electrical current application. Therefore, the oxide or oxide film must be removed in advance to improve conductivity. In addition, it is only necessary to remove the oxide from the part where the electrode contacts, and it is also possible to remove the oxide by contacting both ends of the wire rod material.
I! In this case, only the edges of the material need to be processed.

Conventionally, in order to remove an oxide film or an oxide film from a material that has formed an oxide on the surface, a worker would have to do it manually using a tool, but this method requires a lot of work. Because it is time-consuming and unsuitable for mass production,
Recently, attention has been focused on sandblasting equipment, and it has been considered to use this equipment to remove the oxide film.

Sandblasting equipment is a processing equipment that removes scale and other deposits from the surface of the workpiece by projecting granular abrasive material such as sand or metal onto the surface of the workpiece, cleaning the surface of castings and steel materials. widely used for.

In general, sandblasting equipment consists of a container with a projection nozzle for projecting abrasive material inside, a pair of hand insertion holes formed in the container, and rubber gloves attached to these hand insertion holes. A worker inserts his hand from outside the container into a rubber glove attached to the hand insertion hole, supports the workpiece placed inside the container below the projection nozzle, and projects the abrasive material onto the workpiece from the projection nozzle. I have to. In the apparatus having this configuration, since the entire workpiece is contained and surrounded within the container, the workpiece can be worked without leaking the abrasive used for the work to the outside.

Therefore, when performing sandblasting on the processed part of a wire rod, in order to prevent the abrasive from leaking out of the container, the entire wire rod is placed inside the container using a conventional sandblasting device. However, when performing sandblasting on wire bar-shaped materials using equipment with the conventional configuration, a large container that can hold the entire clamp is required, which leads to an increase in the size of the equipment and is not only economical. There is a problem with bad sex.

Therefore, an insertion hole for the workpiece is formed in the container of the sandblasting device, and only the processed part of the wire rod material is inserted from outside the container through the insertion hole into the container without inserting the wire rod material inside the container. It is considered that sandblasting is performed using sandblasting. In this case, it is not necessary to make the container large enough to contain the entire wire rod wiping material, but it is sufficient to have a size that allows only the processed part of the wire rod material to be inserted, and the size of the container can be reduced. can be achieved. However, in this case, during the sandblasting process, an accident occurs in which the abrasive material inside the container leaks out of the container through the insertion hole of the container through the wire rod-like material and spreads outside the container. Therefore, conventionally, a sandblasting device is used in which the sintered metal body is placed inside a container.

The present invention has been made based on the above-mentioned circumstances, and is a surface processing device for wire rod-shaped materials that can reduce the size of the container in which the processing is performed and that prevents the abrasive material inside the container from leaking to the outside of the container. The purpose is to provide

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the surface processing device for wire rod-like material of the present invention comprises a container provided with an insertion hole into which a processed portion of the wire rod-like material is inserted; , a projection nozzle provided inside the container for projecting granular abrasive material onto the end of a wire rod-shaped material inserted into the container from the insertion hole; It is characterized by comprising an electromagnet that has an annular shape surrounding the opening of the insertion port and has a suction surface that attracts the abrasive material projected from the projection nozzle.

(Operation) Granular abrasive material is projected from the projection nozzle onto the processing portion of the workpiece inserted into the container through the insertion port to perform processing. The abrasive material projected inside the container is reliably attracted to the suction surface of the electromagnet by the electromagnetic attraction force of the electromagnet installed inside the container facing the insertion hole, so it does not leak outside through the insertion hole. . Therefore, it is possible to realize a configuration in which only the processed portion of the workpiece is inserted from the outside of the container into the container through the insertion hole to perform J processing, thereby making it possible to downsize the container. That is, the present invention has been achieved by focusing on electromagnets as a means for preventing leakage of abrasive from a container without relying on any structural means.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

TS1 and 2 show an embodiment of the surface processing apparatus of the present invention.

In the figure, 1 is a container made of a metal plate such as a stainless steel plate, and has a thin vertical box shape.

The upper surface of the container 1 is open, and M3 is attached via the gasket 2. A circular opening 4 is formed in the front surface of the container 1 at any position in the height direction, and a circular lid 5 covering the opening 4 is attached to the front surface of the container 1 via a packing 6. this! A circular workpiece guide ring 7 is attached to the outer surface of I5, and the inner hole of this guide ring 7 is a tapered workpiece insertion hole 8 whose diameter decreases gradually from the outside to the inside. . Further, an insertion hole 9 having the same diameter as the small diameter portion of the tapered insertion hole 8 is formed in the center of the lid 5. Further, an electromagnet 10 having a cylindrical shape, which is a feature of the present invention, is attached to the inner surface of the lid 5. This electromagnet 10 has a coil 12 attached to a cylindrical core 11 made of magnetic metal, a cylindrical yoke 13 made of metal surrounding the outer periphery of the coil 12, and attached to one end surface of the yoke 13. It is constructed by attaching a combination of flange-shaped suction face plates 14.

Then, the electromagnet 10 is oriented so that the suction face plate 14 faces the center of the container 1, the electromagnet 10 is fitted horizontally into the opening 4 in the front part of the container 1, and the electromagnet 10 is attached to the guide ring 7 on the same axis. It is. Thereby, the electromagnet 10 is provided so as to face the M5 insertion hole 9 and surround the opening thereof. Note that the coil 12 is electrically connected to a power supply control circuit by a conductive wire (not shown). This circuit supplies and cuts off current to the coil 12, and magnetizes and demagnetizes the electromagnet 10. Here, the internal hole of the cylindrical core 11 serves as a tapered workpiece insertion hole 15 which becomes the insertion opening 9 of the lid 5. Therefore, by combining the insertion hole 8 of the guide ring 7, the insertion hole 9 of the lid 5, and the insertion hole 15 of the electromagnet 10, the end (processed part) of the wire rod-shaped material to be processed can be inserted into the interior of the container 1. It looks like this.

Inside the container 1, a projection nozzle 16 is provided near the electromagnet 10. This projection nozzle 16 projects the granular abrasive material supplied from the abrasive material inlet 17 from the nozzle 19 using compressed air supplied from the air supply 18. It is installed so that the direction can be determined and the angular direction can be varied. A hose 21.22 is connected to the abrasive material 17 and the air inlet 18 of the projection nozzle 16, and these hoses 21.22
are the space passage tubes 23 and 24 attached to the rear of the container 1.
It is drawn out from the inside of the container 1 through the container 1 and connected to an abrasive supply device and a compressed air supply device (not shown). Further, inside the container 1, an exhaust pipe 26 having a net 25 is attached to the top surface, and the exhaust pipe 26 is connected to a dust collector provided outside the container 1 via a hose (not shown). An abrasive outlet 27 is provided at the bottom of the container 1, and is connected to an abrasive supply device (not shown) via a source.

Note that the internal space of the container 1 should be large enough to allow the end of the wire rod-like material to be inserted and to accommodate the projection nozzle 16 and the exhaust pipe 26, and in particular, the front and rear depths are such that the entire wire rod-like material can be inserted. Because it is not a physical object, it is very small. The bottom part of the container 1 is formed as a hopper part 28, which is inclined so that the abrasive material flows toward the outlet 27.
.

A case in which processing is performed using the surface processing apparatus configured in this way will be described.

The workpiece is a wire rod-shaped material 31, and the processed portion of the wire rod-shaped material 31, usually the surface of the end portion, is processed to be cleaned.

For example, the end of an oxide film formed on the surface of a tungsten material processed into a rod shape is 301 m from the end to be processed with acid 20C1w4.

As the abrasive material, steel balls or granular materials made of various materials with similar characteristics are used.

The electromagnet 10 is inserted into the container 1 through the insertion hole 15 and positioned below the nozzle 19 of the projection nozzle 16.

In this case, since the insertion hole 8 of the guide ring 7 has a tapered shape whose diameter decreases from the outside to the inside, the wire rod-shaped member 31 can be easily inserted. Next, a current is applied to the coil 12 of the electromagnet 10 to generate a magnetic field to attract the attraction surface and the plate 1.
4 is magnetized. After magnetizing the electromagnet 10, the compressed air supply device is actuated to supply compressed air and granular abrasive material to the projection nozzle 16 through the hose 21.22, and the compressed air causes the abrasive material to be positioned below the nozzle 19. It is projected toward the end of the wire rod-shaped material 31.

By the projection of the abrasive material, the oxide film formed on the surface of the end of the wire rod-shaped material 31 is blown away and removed, and the surface of this end becomes clean. Most of the abrasive material projected into the container 1 from the projection nozzle 16 falls into the hopper section 28 of the container 1, is discharged from the abrasive material outlet 27, is circulated to the abrasive material supply device, and is used again for processing. . Moreover, most of the dust generated by driving the dust collector and removing the oxide film on the end of the wire rod-shaped material 31 is discharged from the inside of the container 1 through the exhaust pipe 26 to the outside of the container 1. It is then sucked into a dust collector via a hose.

In addition, a part of the abrasive material projected from the projection nozzle 16 collides with the end of the wire rod-shaped material 31 and rebounds toward the front surface of the container 1, and then escapes from the insertion hole 15 of the electromagnet 10! ! 5 and the insertion hole 8.9 of the guide ring 7 and try to fly out of the container 1. Here, as described above, the electromagnet 10 has a cylindrical shape surrounding the insertion hole 9 of the lid 5, and applies a magnetic field to the entire circumference, and the attraction face plate 14 facing the nozzle 19 of the projection nozzle 16 is magnetized. Because of this, the granular abrasive material that collides with the end of the wire rod-shaped material 31 and bounces back toward the electromagnet 10 is attracted and collected by the suction face plate 14 and core 11 of the electromagnet 10. be done. Therefore, the abrasive material that has been projected from the projection nozzle 16 is attracted to the electromagnet 10 by the electromagnetic attraction force of the electromagnet 10.
is collected from the insertion hole 15 of the electromagnet 16! ! 5 and the guide ring 7 from passing through the insertion hole 8.9 and flying out of the container 1.

After performing the processing in this manner, the drive of the compressed air supply device is stopped, and then the power supply to the electromagnet 10 is stopped. Next, the electromagnet 10 is demagnetized, and the abrasive material attracted and collected by each part of the electromagnet 10 including the attraction face plate 14 is dropped from the electromagnet 10 and dropped into the hopper section 28 of the container 1. In this case, the insertion hole 15 of the electromagnet 10 has a tapered shape whose diameter increases toward the inside of the container 1.
The abrasive material sucked into the core 11 can be easily removed. Finally, the wire rod-shaped material 31 is extracted from the inside of the container to the outside through the insertion hole 15.9.8.

The diameter of the insertion hole 15 of the electromagnet 10 is set using the wire rod-shaped material 3.
1 diameter d and the attraction distance h of the electromagnet 14 (definition of the maximum distance at which an abrasive material stationary on a horizontal surface is attracted to the electromagnet 14 when approaching from above), calculate D-d+2h, and calculate the size less than or equal to D. Satoshi. The reason why 2h is provided between the wire rod-like material 31 and the diameter of the insertion hole 15 is to allow for allowance for deformation of the wire rod-like material 31. Furthermore, the thicker the thickness T of the electromagnet 14, the greater the effect of preventing leakage of the abrasive material. In the above embodiment, D was 25 gm and T was 60 mm.

Insertion and extraction of the wire rod-like material 31 into and out of the container 1 can be carried out by fixing the container 1 and moving the wire rod-like material 31, but the present invention is not limited to this method. There is also a method of moving it back and forth. This method is possible because the container 1 can be made smaller in the present invention.

The wire rod-shaped material targeted as a workpiece by the processing device of the present invention is not limited to processing the end of a wire rod-shaped material of high melting point metal, but can be formed of various materials and used for various purposes. Can be used for wire bar materials.

Further, the processing portion of the wire rod-shaped material is not limited to the end portion, but can also be applied to the case where the intermediate portion or the entire wire rod-shaped material is processed. In this case, insertion holes are provided on opposite sides of the container, and electromagnets are provided opposite each insertion hole, and a wire rod-shaped material is inserted into the container through one insertion hole and moved. By feeding the abrasive to the outside through another insertion hole after processing the abrasive inside, it is possible to avoid increasing the size of the container and prevent the abrasive from leaking.

[Effects of the Invention] As explained above, according to the surface processing device for wire rod-shaped materials of the present invention, an electromagnet is provided in the workpiece insertion hole of the container, and the entire wire rod material to be processed is transported inside the container. It is possible to reliably prevent leakage of the abrasive material from the insertion hole without storing the abrasive material in the container, and it is also possible to downsize the container.

[Brief explanation of the drawing]

1 and 2 are a sectional view and a front view showing an embodiment of the processing apparatus of the present invention. DESCRIPTION OF SYMBOLS 1... Container, 7... Guide ring, 8.9... Insertion hole, 10... Electromagnet, 15... Insertion hole, 16...
・Projection nozzle. Applicant's agent Patent attorney Takehiko Suzue

Claims (1)

[Claims] a container provided with an insertion hole into which a processed part of the wire rod-shaped material is inserted;
A projection nozzle provided inside the container and projecting granular abrasive material onto a wire rod-shaped material inserted into the container from the insertion hole; and a projection nozzle provided inside the container opposite to the insertion hole and said insertion hole. an electromagnet having an annular shape surrounding the opening thereof and having a suction surface that attracts the abrasive material projected from the projection nozzle.