JPH0663858A - Polishing device for traveling linear members - Google Patents

Abstract

PURPOSE:To reduce the contact surfaces of a pair of cup brushes to suppress the amount of heating and increase the efficiency of heat radiation by shifting the rotating axes of a pair of cup brushes to each other in the directions at right angle to the traveling direction of a linear member. CONSTITUTION:A pair of cup brushes 10a and 10b constructed with synthetic resin fiber containing abrasives are made in contact oppositely to each other. Then they are rotated in the directions reverse to each other while a linear member 2 travels between the both cup brushes 10a and 10b revolved around the linear member 2 to polish the external surfaces of the linear member 2. In this case, the rotating axes of a pair of cup brushes 10a and 10b are shifted to each other in the direction at right angle to the linear member 2, and the linear member 2 is run between the recesses at the centers of a pair of cup brushes 10a and 10b.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a steel wire, a round bar, a pipe,
The present invention relates to a traveling linear member polishing device that brushes the outer peripheral surface of a so-called linear member such as a tube while running.

[0002]

2. Description of the Related Art In the continuous wire drawing of linear members such as steel wire, a coating and an oxide scale coated on the outer peripheral surface of the linear member to reduce friction are chemically cleaned in the subsequent step of the continuous wire drawing machine. Remove by brush polishing first. In this brush polishing, as shown in FIG. 4, a pair of cup brushes 1a and 1b made of a synthetic resin fiber containing an abrasive are opposed to each other, and a linear member 2 is placed between the cup brushes 1a and 1b. While traveling, the cup brushes 1a and 1b are rotated in opposite directions and revolved around the linear member 2, and the outer peripheral surface of the linear member 2 is dry-polished to remove the coating film and the oxide scale. I am trying to remove it.

[0003]

By the way, in the conventional polishing apparatus, the rotation axes of the pair of cup brushes 1a and 1b are aligned with each other, and the linear member 2 is polished with the cup brushes 1a and 1b completely overlapped. I had a cup brush 1
Although the contact area between a and 1b is large and the amount of heat generated by friction is large, the contact surface is not exposed to the outside air, so the heat dissipation capability is low. The cup brushes 1a and 1b have a strong tendency to store heat inside the cup brushes 1a and 1b. Since the cup brushes are made of synthetic resin fibers, there is a possibility that the cup brushes may melt and lose their polishing ability when the temperature rises to a certain degree. For this reason, stable operation could not be achieved unless the rotation speed of the cup brush was kept low.

Further, as shown in FIG. 5, the cup brushes 1a and 1b have no recesses at the center because the disk 3 is fastened to the rotary shaft by the nut 4, but in the conventional polishing apparatus, the linear member is used. Since 2 was run at the center of the cup brushes 1a and 1b, no polishing action could be obtained at the recess 5. Therefore, the distance that can polish the linear member is 2x
It was relatively short as L1.

The object of the present invention is to suppress the frictional heat generation of the cup brush, improve the heat dissipation capability, and further to remove the coating and oxide scale dust removed by brush polishing by the centrifugal force of the rotation and revolution of the cup brush. The cup brush required for the polishing device is discharged to the outside of the brush to make it difficult for heat to be stored inside the cup brush, which enables high-speed polishing, and also increases the polishing distance of the linear member per pair of cup brushes. The purpose is to reduce the number of and make the polishing machine compact.

[0006]

In order to achieve the above object, the present invention is directed to a pair of cup brushes made of a synthetic resin fiber containing an abrasive which are opposed to each other, and a linear member is provided between the cup brushes. In a polishing device for rotating both cup brushes in opposite directions and revolving around the linear member to polish the outer peripheral surface of the linear member, the rotation axes of the pair of cup brushes are The linear members are offset from each other in a direction perpendicular to the traveling direction of the linear members, and the linear members are configured to travel between the recesses at the centers of the pair of cup brushes.

[0007]

In the polishing apparatus configured as described above, since the contact area between the cup brushes is reduced by the amount of displacement of the pair of cup brushes, the amount of heat generated is reduced, while the displacement of the cup brushes causes a portion of the contact surface to move. Since it is exposed to the outside air, the heat radiation area is larger than in the conventional case, and it becomes difficult to store heat inside the cup brush. Therefore, it is possible to increase the rotational speed of the cup brush and perform high-speed polishing. Further, since the linear member is moved to a position avoiding the concave portion at the center of the cup brush,
Since the polishing distance of the linear member per pair of cup brushes is increased and the same polishing action as that of the conventional one can be obtained with a small number of cup brushes, the polishing apparatus can be made compact.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, 10a and 10b are a pair of upper and lower cup brushes made of synthetic resin fiber containing an abrasive, and 2 is a linear member 2 that runs between the pair of cup brushes 10a and 1b. Cup brush 10a,
Three sets of 10b are used in total, and the drive mechanism thereof is configured as follows. That is, by the bearing portions 11a and 12a of the left and right columns 11 and 12 which are erected on the foundation surface 9,
Hollow support shafts 14 and 15 which are integrally provided on both ends of a rectangular rotary frame 13 are rotatably supported. One support shaft 1
A pulley 16 is fixed to the outer end of the belt 4, and a belt 17 is wound between the pulley 16 and a rotating shaft 18a of a motor 18 fixed to a base 11b of the support 11. The rotating frame 13 is driven by the motor 18. Is designed to rotate.

A linear member 2 running from left to right in FIG. 1 is inserted into the support shafts 14 and 15. The left end of the linear member 2 is connected to the wire drawing machine, and the right end is connected to the chemical cleaning device and the water cleaning device. The intermediate portion of the linear member 2 has two left and right partition walls 19 and 20 that partition the inside of the rotary frame 13.
Is inserted in the guide hole 21.

Outside the upper and lower walls 13a and 13b of the rotary frame 13, three small gears 22 and three reverse gears 23 meshing with each other as shown in FIG. Installed. That is, a shaft 24 integral with the small gear 22 is rotatably supported on one side of the rotation axis C of the rotary frame 13, and a shaft 25 integral with the reverse rotation gear 23 is rotatably supported on the opposite side. The shaft 24 of the small gear 22 extends into the rotary frame 13, and the threaded portion at the inner end of the shaft 24 is shown in FIGS.
The center of the disk 26 of the cup brushes 10a and 10b is fixed by a nut 27 as shown in FIG. Walls 13a, 13
Since the arrangement of the small gear 22 and the reverse gear 23 with respect to b is exactly the same, the upper and lower cup brushes 10a and 10b are arranged in a direction perpendicular to the traveling direction of the linear member 2 as shown in FIGS. The layout is shifted. As shown in FIG. 3B, the degree of deviation of the cup brushes is set so that the recesses 5 having no bristles do not overlap each other, and the linear member 2 travels between the recesses 5. As a result, the mutual contact area of the cup brushes 10a and 10b is reduced to about 1/3 of the conventional one in the present embodiment (when the diameter of the cup brushes 10a and 10b is 96 mm and the diameter of the recess 5 is 46 mm).
In addition, 2 / of the brush part area of the cup brushes 10a, 10b
3 is a new heat dissipation area, and the traveling distance of the linear member per pair of cup brushes is L2. According to this embodiment, this L2 is, for example, about 1.6 times as long as the conventional traveling distance of 2 × L1. Became.

In FIG. 1, the shaft 25 of the reverse rotation gear 23 at the left end projects outward, and a planetary gear 28 is integrally attached to this projection end. The planetary gear 28 meshes with a sun gear 29, which is formed of a bevel gear that is integrally fixed to the spindle 14 coaxially with the inner surface of the left column 11, and when the rotating frame 13 rotates, the planetary gear 28, and by extension, the planetary gear 28. The reverse rotation gear 23, the small gear 22, and the cup brushes 10a and 10b are configured to rotate.

Next, the operation of this embodiment will be described. When the motor 18 is driven, the driving force is transmitted to the pulley 16 by the belt 17 and the rotary frame 13 rotates, so that the sun gear 29
The planetary gear 28 meshing with the planetary gear 28, the reverse gear 25 integral with the planetary gear 28 via the shaft 25, the small gear 22 meshing with the reverse gear 25 and the remaining reverse gear 23 rotate, and the pair of cup brushes 10a, 10b are 3A and 3B, they rotate in opposite directions in a state where they are aligned with each other. Therefore, the pair of cup brushes 10a and 10b revolve around the rotary frame 13 and rotate in opposite directions.

In the meantime, the right end of the linear member 2 is pulled from the chemical cleaning machine side and runs between the pair of cup brushes 10a and 10b in the direction of the arrow in FIG. 1, and the outer peripheral surface of the cup brush 10a contains an abrasive. , 10b, the film is uniformly polished, and at the same time, the coating film and oxide scale on the outer peripheral surface are removed.

At this time, since the cup brushes 10a and 10b are rotating in opposite directions to each other, the forces of the pair of cup brushes 10a and 10b acting in the direction traversing the linear member have equal magnitude opposite directions, and the linear member 2 Since no force is applied in the direction traversing the line, the traveling path of the linear member 2 is always straight and stable.

The linear member 2 from which the coating and oxide scale have been removed exits from the support shaft 15 and is sent to a chemical cleaning machine, where the coating and oxide scale remaining in the minute grooves on the outer peripheral surface of the linear member 2 are removed. After being removed by washing with chemicals, the chemicals are washed away with a water washer.

The embodiment of the present invention has been described above.
The present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above embodiment, three sets of cup brushes were used. The number and size of the cup brushes depend on the linear member to be processed. You may change suitably according to a kind and a diameter. The present invention can be used alone as well as in combination with continuous wire drawing of linear members.

[0017]

As described above, according to the present invention, since the rotation axes of the pair of cup brushes are offset from each other in the direction perpendicular to the traveling direction of the linear member, the mutual contact area of the pair of cup brushes is reduced and the amount of heat generation is suppressed. At the same time, a part of the contact surface is exposed to the outside and the heat dissipation area is increased accordingly, so the heat dissipation ability can be improved, and as a result, the tendency to accumulate heat inside the cup brush can be suppressed, and the cup brush can be rotated continuously at high speed. Also, since there is no danger that the cup brush will melt due to high heat,
High speed polishing becomes possible. Further, since the linear member is made to run while avoiding the concave portion at the center of the pair of cup brushes, the traveling distance of the linear member per pair of cup brushes increases, and the polishing device can be configured with a smaller number of cup brushes. As a result, the polishing apparatus can be made compact.

[Brief description of drawings]

FIG. 1 is a side view of a linear member polishing apparatus according to a preferred embodiment of the present invention.

FIG. 2 is a plan view taken along the line II-II of FIG.

FIG. 3A is a side view of a pair of cup brushes viewed from the traveling direction of the linear member, and FIG. 3B is a plan view taken along the line IIIb-IIIb of FIG.

FIG. 4 is a perspective view of a cup brush of a conventional linear member polishing apparatus.

5 is a plan view taken along the line VV of FIG.

[Explanation of symbols]

 2 linear members 10a, 10b cup brushes 11, 12 struts 11a, 12a bearings 13 rotating frames 14, 15 support shafts 16 pulleys 17 belts 18 motors 22 small gears 23 reverse gears 28 planetary gears 29 sun gears

Claims (1)

[Claims] 1. A pair of cup brushes made of a synthetic resin fiber containing an abrasive are opposed to each other, and a linear member is run between both cup brushes, and both cup brushes rotate in opposite directions to each other. In the polishing device that revolves around the linear member and polishes the outer peripheral surface of the linear member, the rotational axes of the pair of cup brushes are displaced from each other in a direction perpendicular to the running direction of the linear member, A traveling linear member polishing device configured to cause a linear member to travel between recesses at the center of the pair of cup brushes.