JPH0325901Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a shot blasting machine for polishing wire rods, and more particularly to a device for removing dust from wire rods after being polished in the shot blasting machine.

(Prior art) When drawing wire rods into smaller diameter wire rods through dies in the wire manufacturing process, lubricating oil is applied to the surface of the wire rods in order to facilitate the wire drawing work and prolong the life of the dies. However, as a pretreatment, it is necessary to use a shot blasting machine to remove scale adhering to the surface of the wire.

By the way, even if the scale on the surface of the wire is removed in the cleaning chamber of a shot blasting machine, the minute dust floating in the cleaning chamber will adhere to the surface of the wire.
This may interfere with the lubricating oil application work in the subsequent process. Conventionally, in order to deal with such problems, a cylindrical wind box through which the wire can pass was placed adjacent to the outlet of the wire in the cleaning room, and the outer periphery of the wind box was connected to the exhaust port of the blower. Surrounded by a casing that communicates with the wind box, the exhaust air from the blower is supplied into the wind box through a vent hole drilled on the outer periphery of the wind box, thereby blowing off dust from the surface of the wire passing through the wind box. (For example, Utility Model Application Publication No. 58-8567). However, in such a dust removing device, the force of the air is weak, and a complete blowing off effect cannot be obtained.

(Purpose of the invention) The present invention was made in view of the above-mentioned circumstances, and its purpose is to completely remove minute dust attached to the surface of the wire after being polished.

(Structure of the invention) Hereinafter, the present invention will be explained in detail based on an example. Reference numeral 1 denotes a partition wall on the exit side of a grinding chamber 2 of a shot blasting machine for wire polishing, and a hole is formed in the partition wall 1. A nozzle (hereinafter referred to as the first nozzle) 4 is attached to the opened opening 3 so as to close the opening 3, and the wire W passes through the hole 5 of the first nozzle 4 in the direction of arrow A. It is made movable. It should be noted that the hole 5 of the first nozzle 4 has a constricted slope shape toward the moving direction of the wire W.

On the right side of the partition wall 1, a cylindrical shot leak prevention device 6 has its axis aligned with the axis of the first nozzle 4, and its base end is fixed to the outlet side wall surface of the cabinet (not shown). It is arranged. A dust removal device 7 of the present invention is attached to the tip of the shot leak prevention device 6. In the dust removal device 7, 8 is a drum-shaped wind box whose base end surface is fixed to the tip of the shot leak prevention device 6, and the axis of the wind box 8 is aligned with the axis of the shot leak prevention device 6. Match. Note that a slight gap is maintained between the tip end surface of the wind box 8 and the partition wall 1.

A through hole 9 is bored in the side wall of the wind box 8, and the through hole 9 is connected via a duct 11 to an exhaust port of a blower (not shown). Said wind box 8
An opening 12 is bored in the center of the front end surface of the wire W. is allowed to pass through the hole 14 of the second nozzle 13. The second nozzle 1
The hole 14 of No. 3 has a proximal end (right side as viewed from the drawing) that opens in the direction of movement of the wire W and has a sloped shape, and a distal end (left side as viewed from the drawing) that opens in the direction of movement of the wire W. It has a tapering slope shape, and the overall shape is an hourglass. In the embodiment, the hole 14 of the second nozzle 13 is drum-shaped as a whole, but the tip side of the hole 14 may be straight, or the hole 14 may have a sloped shape that opens toward the moving direction of the wire W as a whole. You can.

An opening 15 is also bored in the center of the base end surface of the wind box 7, and a nozzle (hereinafter referred to as the third nozzle) 16 is attached to the opening 15 so as to close the opening 15. , the wire W is allowed to pass through the hole 17 of the third nozzle 16. The outer periphery of the tip of the third nozzle 16 is tapered, and the tapered portion is similar to that of the second nozzle 1.
It is loosely fitted into the proximal end side of the hole 14 of No. 3. Note that the gap 18 between both nozzles 13 and 16 in the loose fitting portion
are evenly distributed around the entire circumference. Also, the third
The hole 17 of the nozzle 16 has a converging gradient shape toward the moving direction of the wire W.

(Function) In the structure as described above, the wire W
is cleaned in the projection chamber 2 while moving in the direction of arrow A. At the same time, a blower (not shown) is operated and the exhaust air from the blower is passed through the duct 11 to the wind box 8.
When the air is supplied into the second nozzle 13 and the third
The second
into the proximal end of the hole 14 of the nozzle 13, and then into the hole 1.
4 is released into the atmosphere from the tip side. When the wire W polished in the cleaning chamber 2 in such a state enters the second nozzle 13 through the first nozzle 4, the wire W
The entire circumference of the wire W is inside the hole 14 of the second nozzle 13.
exposed to air flowing against the direction of movement of
As a result, minute dust attached to the surface of the wire W is blown away and discharged into the atmosphere from the tip side of the hole 14 of the second nozzle 13. After dust on the surface of the wire W is removed in the hole 14 of the second nozzle 13 in this way, the wire W passes through the third nozzle 16, the shot leakage prevention device 6, and the outlet side wall surface of the cabinet (not shown). It is carried out of the aircraft.

(Effects of the invention) As is clear from the above explanation, the present invention allows the wire rod after polishing to pass through a wind box that is connected to the exhaust port of the blower, thereby removing minute dust attached to the surface of the wire rod. In the dust removal device of a wire shot blasting machine that removes wire rods, two nozzles are attached to the wind box so that the wire rods after polishing can pass through them one after another. The outer periphery of the tip of the nozzle is formed into a tapered shape, and the tapered portion of the tip of the other nozzle is loosely fitted into the base end side of the hole of the one nozzle, keeping an even gap, so that the air in the wind box can be channeled to the desired shape. The air is blown into the one nozzle hole through the gap to remove minute dust from the surface of the wire passing through the nozzle hole.

Therefore, according to the present invention, the air blown onto the wire has a strong force as it passes through a narrow gap, and since the gap is kept even, the air is blown evenly around the entire circumference of the wire. As a result, dust on the surface of the wire is completely removed.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional front view of the device of the present invention. 1... Partition wall, 2... Grinding room, 4... First nozzle, 6... Shot leak prevention device, 7... Dust removal device, 8... Wind box, 11... Duct, 13...
...Second nozzle, 14...hole, 16...third nozzle, 18...gap.

Claims (1)

[Scope of utility model registration request] In a dust removal device for a shot blasting machine for wire rods, the wire rod W after being polished is passed through a wind box 8 which is connected to an exhaust port of a blower to remove minute dust attached to the surface of the wire rod W. , two nozzles 13 and 16 are attached to the wind box 8 so that the wire rod W can pass through them one after another, and the shape of the proximal end of the hole 14 of one nozzle 13 is opened in the direction of movement of the wire rod W to form a sloped shape. , the outer periphery of the tip of the other nozzle 16 is tapered, and the tapered portion of the tip of the other nozzle 16 is loosely fitted to the proximal end side of the hole 14 of the one nozzle 13 while maintaining an even gap 18. A dust removal device for a shot blast machine for wire rods.