JPH11114797A - Deburring device for round bar workpiece edge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heighten deburring efficiency and uniformly polish the edge of each workpiece by moving each workpiece in conveyance to the side part, and bringing one end face of the workpiece into contact with a guide plate to position the workpiece. SOLUTION: A keep belt 18 of a work holding rotating device is inclined frontward to the right from the top view so that the whole of a horizontal traveling part which is the action part of the keep belt 18 comes in contact with the right end side of a roller 4 and that the rear part comes in contact with the left end side of a roller 4. Accordingly, at the time of transferring a plurality of workpieces 25 conveyed in the uneven state to the lower part of the keep belt 18, frontward while rotating them by the keep belt 18, the workpieces 25 are moved to the right side to bring the right end face of each workpiece 25 into contact with a guide plate 7 on the right side. A plurality of workpieces passing through at the side of a polishing device 8 are therefore positioned with the guide plate 7 on the right side as a reference, and the left edge of each workpiece 25 to be a polished part is aligned and polished uniformly by a polishing belt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing burrs on an edge of a round bar-shaped work caused by, for example, shearing, and more particularly, to pushing a work being conveyed to one side to the end of the work. The present invention relates to a deburring device capable of aligning and polishing edges.

[0002]

2. Description of the Related Art For example, as a raw material for forming an engine valve by hot forging, a short work, which is obtained by cutting a long round bar-shaped raw material to a predetermined length by shearing, is used. If burrs are formed on the edge of the work, it may hinder insertion of the work into a press die, and it is necessary to remove the burrs.

The applicant of the present application has developed a device capable of easily and continuously removing burrs generated on the edge of a workpiece after shearing, and has filed a patent application simultaneously with the present application.

[0004] In this method, the sheared work is sequentially conveyed while being rotatably supported by a work transfer device. During the transfer, the work is rotated by a pressing belt of a work holding and rotating device provided above the work transfer device. While the upper surface is held and rotated, the burrs at the edge of the work are polished and removed by a polishing belt of a polishing device provided on the side.

[0005]

It has been found that the above-described deburring apparatus has the following concerns. That is,
Simply rotating the work while holding the upper surface of the work with the holding belt of the work holding and rotating device, the work gradually escapes to the side due to the grinding load of the polishing device applied to the work.
Deburring efficiency may be reduced.

Further, if the workpieces fed into the workpiece transport device are displaced in the axial direction, the end faces of the workpieces become irregular, and the edges of the workpieces may not be uniformly polished.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has an object to reduce the deburring efficiency by moving a workpiece being conveyed sideways and positioning one end surface of the workpiece by abutting a guide plate. It is an object of the present invention to provide a deburring apparatus for a round bar-shaped work edge, which can be polished and can uniformly polish the work edge.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a work transport apparatus for transporting a plurality of round bar-shaped workpieces in a fixed direction while rotatably supporting a plurality of round bar-shaped workpieces so as to face in a direction orthogonal to the transport direction. A part of the polishing belt, which is provided on one side of the polishing belt and is orthogonal to the conveying direction of the work, and is wound around a pair of rollers and runs around the roller on the work conveying device side, A polishing device facing the upper edge, and a lower surface of a horizontal revolving portion of a presser belt provided above the work transporting device so as to face the polishing device and revolve in the direction of transporting the workpiece; A work holding and rotating device that rotates the work by bringing the work into contact with the upper surface of the work. By tilting the work obliquely with respect to the transfer direction of the work, the work is moved laterally, and one end surface thereof is brought into contact with a guide plate provided on the opposite side of the polishing apparatus. Will be resolved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4, above the base (1),
A roller type work transfer device (2) is provided which runs endlessly toward the front (hereinafter, the left direction in FIG. 1 is the front).

The work transfer device (2) includes a plurality of rollers (4) rotatably supported by a support shaft (3) facing in the left-right direction;
A pair of left and right link chains (5) and (5) that support both ends of the support shaft (3) of each roller (4) at a constant pitch is provided between adjacent rollers (4) in front and rear. A gap is formed in which a work (25) to be described later can be placed and supported. The width of the roller (4) is smaller than the length of the work (25) so as to support the center of the work.
(See FIG. 2).

The lower end surfaces of the left and right chains (5) are shown in FIG.
As shown in (1), a pair of left and right front and rear directions fixed to the upper end of a support plate (6) erected on the base (1) so as to protrude above the upper surface of the roller (4). Guide plate facing (7)
(7) is supported by the upper surface of the inwardly bent portion (7a),
The work transfer device (2) rotates while being supported by the inwardly bent portion (7a).

On the left side of the work transfer device (2), a polishing device (8) is provided orthogonal to the work transfer device (2).

The polishing device (8) includes a drive roller supported by a pair of bearing members (9) (9) erected on a base (1).
(10), a driven roller (11) (not shown in FIG. 1) which is provided close to the side end of the roller (4) diagonally above, and wound around these rollers (10) (11). A sandpaper-like polishing belt (1
2) and a motor (14) for driving the drive roller (10) by a belt (13).

The portion of the left guide plate (7) close to the driven roller (11) is cut off by a length substantially corresponding to the width of the polishing belt (12). The rotation of the belt (12) is not hindered.

As shown in FIG. 4, an elastic body (11a) such as soft urethane is fitted on the outer peripheral surface of the driven roller (11).

A work holding / rotating device (15) is provided above the work transfer device (2) at a position facing the driven roller (11) of the polishing device (8).

The work holding and rotating device (15) includes a pair of front and rear driven rollers (16) and (16) pivotally supported by an immovable support (not shown) immediately above the work transfer device (2). A driving roller (17) pivotally supported by an immovable support member (not shown) above the front portion between the motors, a motor (not shown) for driving the driving roller (17), and the three rollers (16) A presser belt (18) looped around (17), and three presses provided in a space surrounded by the presser belt (18) and pressing the horizontal running portion of the presser belt (18) downward from the inside. It consists of a belt tensioner (19).

The belt tensioner (19) has a horizontal support rod (2).
A pivoting lever (21) having a central portion pivotally mounted at (0) and concavely bent forward; and The pressing roller (22) pressing the (upper surface), the upper end of the rotating lever (21) and the support plate (23) are engaged to urge the rotating lever (21) counterclockwise in side view. It consists of a tension coil spring (24).

The work (25) cut to a predetermined length by a shearing device (not shown) is placed and held between the adjacent rollers (4) and (4) in the work transfer device (2) and transferred forward. It has become.

At this time, as described above, since the width of the roller (4) is smaller than the length of the work (25), the burrs (25a) generated at the edge of the work (25) due to shearing are generated by the roller (4). (4)
Contact is prevented.

Pressing belt of the work holding and rotating device (15)
In (18), as shown in FIG. 3, the front part of the horizontal revolving part, which is the working part, contacts the right end of the roller (4) (upward in the figure), and the rear part also has the roller (4). Is inclined forward and rightward in plan view so as to abut on the left end. this is,
When a plurality of workpieces (25) conveyed in a random manner to the lower side of the presser belt (18) are transported forward while being rotated by the presser belt (18), they are moved rightward (upward in FIG. 3). This is for bringing the right end face of the work (25) into contact with the right guide plate (7).

By doing so, the polishing apparatus (8)
The multiple workpieces (25) passing by the side of the
Each work that is positioned based on (7) and is a polishing part
The left edge of (25) can be aligned and polished uniformly by the polishing belt (12).

In the deburring device of the above embodiment, the polishing device (8) and the work holding and rotating device (15) are operated together,
Roller (4) of work transfer device (2) for transferring work (25) after shearing
When the paper is continuously transported forward and supported by
The plurality of workpieces (25) that have reached just below (18) are pressed against the right guide plate (7) while being rotated counterclockwise in side view. At the same time, the left edge of each work (25) is simultaneously polished by the polishing belt (12) wound around the driven roller (11), and the burrs (25a) generated at that portion are removed.

At this time, since the elastic body (11a) is fitted on the outer peripheral surface of the driven roller (11), the polishing belt (12) is adjusted according to the size of the burr (25a) and the shape of the outer peripheral edge. The contact portion with the work (25) can be bent in the radial direction. Therefore, since a large load is prevented from being applied to the polishing belt (12), the life of the polishing belt (12) is not shortened due to peeling of abrasive grains.

Further, each work (25) below the work holding and rotating device (15) comes into strong contact with a pressing belt (18) stretched downward by a plurality of belt tensioners (19), and is relatively large. Since the rotational force is applied, even if a grinding load from the polishing belt (12) is applied to the work (25), a slip occurs between the work (25) and the holding belt (18), and the work (25 ) Does not stop or fluctuate, so
There is no risk of causing uneven polishing on the outer peripheral edge.

Further, the horizontal running portion of the polishing belt (12) is inclined in the oblique left and right directions, and the right end surface of the work (25) is brought into contact with the right guide plate (7) to move the work to the side. Even if the polishing belt (or driven roller) (12) comes into contact with the work (25), the work (25) does not move to the right side,
The polishing efficiency of each work (25) can be improved, and uniform polishing can be performed.

Although not shown, the work (25)
In order to remove the burrs formed on the right end face of the workpiece, during the transfer of the work, a polishing apparatus (8) and a work holding and rotating apparatus (15) having the same configuration as in the above embodiment, a polishing apparatus (8), Contrary to the above, it is arranged on the right side of the work transfer device (2), and the horizontal running portion of the presser belt (12) is separately provided inclining in the opposite direction to the above.

The apparatus of the present invention can be used not only for removing the burrs but also for chamfering a work edge.

[0029]

According to the present invention, the edge of each work is aligned, and the work is prevented from moving to the side when the polishing belt is in contact, so that the polishing (burring) efficiency of each work is reduced. Can be improved and uniformly polished.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing one embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional rear view of a main part along line II-II in FIG.

FIG. 3 is an enlarged plan view of a main part.

FIG. 4 is an enlarged sectional view of a driven roller of the polishing apparatus.

[Explanation of symbols]

 (1) Base (2) Work transfer device (3) Support shaft (4) Roller (5) Chain (6) Support plate (7) Guide plate (8) Polishing device (9) Bearing member (10) Drive roller ( 11) Driven roller (11a) Elastic body (12) Polishing belt (13) Belt (14) Motor (15) Work holding and rotating device (16) Driven roller (17) Drive roller (18) Pressing belt (19) Belt tensioner ( 20) Support rod (21) Rotating lever (22) Press roller (23) Support plate (24) Tension coil spring (25) Work (25a) Burr

Claims (1)

[Claims] 1. A work transfer device for transferring a plurality of round bar-shaped works in a certain direction while rotatably supporting the work so as to face in a direction perpendicular to the transfer direction. A polishing apparatus having a polishing belt wound around a pair of rollers and running around a roller on the side of the work transfer device facing the upper end of the work; The work is rotated by contacting the lower surface of the horizontal traveling portion of the presser belt provided above the apparatus to face the polishing device and traveling in the direction of transporting the workpiece with the upper surfaces of the plurality of workpieces. And a work holding / rotating device that provides a workpiece. The horizontal revolving portion, which is the working surface of the presser belt of the work holding / rotating device, is inclined in an oblique direction with respect to the work transfer direction. By moves the workpiece laterally, round bar work edge deburring device being characterized in that so as to abut against the guide plate provided on the opposite side of the polishing device end face of its one.