JPH0550376A - Work feeder for wide belt sander - Google Patents

Abstract

PURPOSE:To perform a sure supply of workpieces as well as to make them so as to be conveyed so stably, in a work feeder for a wide belt sander which uses a work feed belt formed with fitting holes, fitting a small workpiece in this fitting hole, and makes the workpiece so as to be transferred to a belt sanding attachment. CONSTITUTION:A workpiece W is layeredly housed at a frontward position of a belt sanding attachment 6, while a work guide 20 feeding the workpiece W to two fitting holes 19 formed in an endless work feed belt 18 is made contact with both ends of the endless work feed belt 18 of interlocking flange edges 27, 27 installed in the guide roller 26, and since the work guide 20 is made so as to follow after a movement in the cross direction of the endless work feed belt 18, the workpiece W is surely feedable to an inner part of the fitting hole 19 and, what is more, can be fed to the belt sanding attachment 6, thus the efficiency of sanding and polishing is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work material supply device for a wide belt sander machine which grinds and polishes a work material for small articles.

[0002]

2. Description of the Related Art When a small processed material is ground and polished by a wide belt sander machine, unlike a long processed material, it cannot be held by pressing rollers before and after a belt grinding machine. Stable transfer to the belt grinding device is an issue. So, as one means of this,
As disclosed in Japanese Utility Model Application Laid-Open No. 54-18888, it is proposed that the endless feeding belt is provided with a stopper for supporting the rear end of the processed material and the processed material is made to follow the feeding belt. Has been done. Further, as disclosed in Japanese Utility Model Publication No. 57-55010, there is also one in which a negative pressure is applied to the material feeding belt so that the processed material is attracted to the material feeding belt surface. However, in the former case, since the stopper protrudes from the belt surface, the stopper is ground and polished, or the processed material is supported only at the rear end, and is not always stabilized.
Positional deviation in the left-right direction and falling off from the material feeding belt are likely to occur. In the latter case, the apparatus becomes complicated and the vacuum pump needs to be constantly operated, which is uneconomical and easily causes noise.

In order to solve the above-mentioned problems, an endless material feeding belt having a large number of fitting holes for fitting a small processed material is formed along a lengthwise direction, and a work material supply path having a lower opening is provided. A configuration is adopted in which the work material is sequentially dropped from the provided work guide into the fitting hole, and the work material is transferred while being held in the fitting hole and subjected to grinding and polishing by a belt grinding device.
Proposed as disclosed in 321154.

[0004]

By the way, in the structure in which the material feeding belt having the fitting holes is formed, when the material feeding belt slides on the guide roll and moves in the width direction during traveling,
There is a problem in that the supply path of the work guide is displaced from the fitting hole of the material feeding belt and cannot be inserted, and only the fitting hole is sent out without the work material being mounted, which lowers the grinding and polishing efficiency. Further, in order to support the processed material in the fitting hole, a holding frame is arranged inscribed above the material feeding belt, and the processed material is placed on the holding frame to serve as the material feeding belt. There is also a problem in that it follows that the vehicle runs while slipping, and the sliding resistance at this time causes vibrations, and stable traveling of the material feeding belt cannot be ensured. It is an object of the present invention to provide a processing material supply device that can solve the above problems.

[0005]

The first means of the present invention is to store the workpieces in a stack in the vertical direction at the front position of the belt grinding device, and to accommodate the traveling of the endless feeding belt. A work guide having a lower open supply path through which the workpiece is sequentially inserted into the fitting hole is pivotally supported by a guide rod across the width so as to be movable in the width direction, and the endless feeding is performed on the work guide. It is characterized in that follower plate edges that come into contact with both ends of the material belt from the outside are arranged on both sides.

A second means is to dispose an endless supporting belt, which is driven by the upper end of the endless material feeding belt of the endless material feeding belt and is inscribed inside the endless material feeding belt of the material feeding device. A holding frame for supporting the belt is provided so as to be inscribed in the upper portion of the support belt.

[0007]

In the first means, when the material feeding belt moves in the width direction, the work guides having the trailing plate edges contacting both ends of the belt follow the movement of the material feeding belt. Move in the width direction along. Therefore, the supply path of the work guide always coincides with the fitting hole of the material feeding belt in the width direction, so that the processed material surely falls into the fitting hole.

Further, in the second means, the lower surface of the processed material in the fitting hole is supported by the endless support belt. Since the endless support belt is inscribed in the material feeding belt and is driven to travel, the processed material is smoothly transferred without causing sliding resistance as the material travels.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings. The structure of an example of this type of belt sander will be described with reference to FIG. Elevating screws 3 and 3 which rotate in conjunction with each other by a handle 4 are inserted into one side portion of the lower frame 1, and the material feeding device 2 described later is supported by the screws 3 and 3 so as to be able to move up and down. A vertical frame 5 is erected on the other side of the lower frame 1, and a belt grinding device 6 is installed on the vertical frame 5.
Is provided on the material feeding device 2 with a material feeding passage. In this belt grinding device 6, a tension roller 8 which also serves as a steering is attached to the upper part of a sanding frame 7 so as to be able to move up and down, and a drive guide roller 9 is provided on the supply side and a driven guide roller 10 is provided on the discharge side at the lower part of the frame 7. The endless sanding belt 1 is attached to the rollers 8, 9 and 10 by pivotally supporting and further fitting a tread pad device 11 between the guide rollers 9 and 10.
It is constructed by multiplying 2. Then, the endless sanding belt 12 is pressed against the processed material w by the treading pad device 11 to grind and polish the processed material w. A roll sanding type belt sander machine in which the contact roll is pressed against the processed material may be provided.

Such a construction is well known, and an embodiment of the work material supply apparatus of the first means of the present invention will be described below. In the material feeding device 2, the material feeding frame 15 is supported by the lifting screws 3 and 3, the driving roller 16 is supported at the rear end of the material feeding frame 15, and the driven roller 17 is supported at the front end. An endless material feeding belt 18 is stretched around 17. Fitting holes 19 into which a processed material is fitted are formed in the endless material feeding belt 18 at predetermined intervals. Then, at the front position of the belt grinding device 6, as shown in an enlarged view in FIGS.
0 is set. The work guide 20 has a substantially U-shaped cross section, and the side plates 21 and 21 are fixed inside the work guide 20, and the space between the side plates 21 and 21 is a lower open supply path 22.
Then, as will be described below, the supply path 22 has an endless material feed belt 1.
8 and the fitting holes 19 of 8 correspond in the width direction. And supply path 22
The small processed material w is stacked and supplied to.

On the other hand, support frames 23, 23 are pivotally supported by supporting shafts 23a from both side surfaces of the material feeding frame 15, and guide rods 24, to which position holding rollers 29, 29 are fixed, are rotatable on the upper ends thereof. Handed over. The position holding rollers 29, 29 are fixed to the inside of the guide rod 24 and are in contact with the upper surface of the endless material feeding belt 18, and the guide rod 24 is floated from the upper surface of the belt to a predetermined height position. With this mechanism, even if the thickness of the endless material feeding belt 18 changes, the guide rod 24 can always have a predetermined height with respect to the endless material feeding belt 18. Instead of this, the support frames 23, 23 may be fixed to the support shaft 23a.

Further, bearing pieces 25, 25 provided on the rear surface of the work guide 20 are rotatably loosely fitted to the guide rod 24 outside the position holding rollers 29, 29.
The work guide 20 is rotatable about the guide rod 24 and is movable along the guide rod 24 in the width direction.

An end portion of a guide roller 26 is rotatably supported on the front portion of the work guide 20. To the guide roller 26, brim-shaped follower plate edges 27, 27 are fixed at a width interval that matches the width of the endless material feeding belt 18. Then, the endless material feeding belt 18 is sandwiched between the following plate edges 27, 27, and the total weight of the work guide 20 around the guide rod 24 serves as the endless material feeding belt 18.
I try to maintain that condition. The trailing plate edges 27, 27 are formed by making the widths of both side walls of the work guide 20 coincident with the distance between the endless material feeding belts 18 and suspending a part of the side walls downward to form the end portions. Various configurations such as sandwiching the material feeding belt 18 may be proposed.

In such a structure, the endless material feeding belt 18 moves in the width direction as it travels, but the work guide 20 has the follower plate edges 27, 27 of the guide roller 26 at the end of the endless material feeding belt 18. Since it is in contact with the edge, the guide rod 2
4 and follows the endless material feeding belt 18. Therefore, the supply path 22 of the work guide 20 is always aligned with the fitting hole 19 of the endless material feeding belt 18 in the width direction, and the supply path 22
The processed material w in the inside sequentially falls into the fitting hole 19 as the endless material feeding belt 18 travels. The distance between the lower edge 28 of the rear wall of the work guide 20 and the upper surface of the endless material feeding belt 18 is adjusted so as to be equal to or less than the thickness of the processed material w, and the fitting hole 19 is provided in the supply path 22. The endless material feeding belt 18 is regulated so as not to convey the material until it is located immediately below.

Next, one embodiment of the second means of the present invention is shown in FIG.
2 will be described. Endless material feeding belt 18 of the material feeding device 2
Inside thereof, an endless support belt 30 having one end hooked on the drive roller 16 and the other end hooked on an idler roller 31 supported by the material feeding frame 15 is disposed. That is, around the driving roller 16, the endless support belt 3
0 and the endless material feed belt 18 are superposed.
The upper portion of the endless support belt 30 that runs horizontally is inscribed in the upper portion of the endless material feeding belt 18 that runs. Further, the upper portion of the endless support belt 30 is inscribed in and supported by a holding frame 32 arranged in the endless support belt 30.

In such a structure, the endless material feeding belt 18
The endless support belt 30 and the endless support belt 30 are synchronously driven by the same drive roller 16, so that the endless support belt 30 is driven by the endless material feed belt 18. Therefore, the workpiece w supplied into the fitting hole 19 of the endless material feed belt 18 by the work guide 20 has its lower surface on the endless support belt 30.
Will be supported and sent out, and the processed material w will be smoothly transferred without receiving sliding resistance. Furthermore, since the upper portions of the endless material feeding belt 18 and the endless support belt 30 are supported by the holding frame 32, slack does not occur. Thus, the processed material w is the endless belt 18
It is transported while being restrained in the front and rear and right and left in the fitting hole 19 of the endless sanding belt 1 of the belt grinding device 6.
It will be ground and polished by 2.

On the other hand, as another means for causing the endless support belt 30 to be driven by the endless material feeding belt 18,
It is not necessary to superpose it on the driving roller 16, and both ends of the endless support belt 30 are hung on the idle rollers in the endless material feed belt 18 and the endless material feed belt 1 on the holding frame 32.
8 and the endless support belt 30 are superposed on each other, the endless support belt 30 will be driven by the friction resistance with the endless material feeding belt 18 even if some slip is expected. Also in this case, the work material w has a significantly reduced sliding resistance on its lower surface.

[0018]

As described above, according to the first means of the present invention, the processed materials w are stored in a laminated form at the front position of the belt grinding device 6 and formed on the endless material feeding belt 18. In the work guide 20 for supplying the processing material w to the fitting hole 19, the follower plate edges 27, 27 provided on the guide roller 26 are brought into contact with both ends of the endless material feeding belt 18, and the width direction of the endless material feeding belt 18 is determined. Since the work guide 20 is made to follow the movement, the processing material w can be reliably supplied into the fitting hole 19 and can be sent to the belt grinding device 6, and the grinding and polishing efficiency is improved.

In the second means, the endless support belt 30 is disposed in the endless material feed belt 18, and the upper part thereof is inscribed in the running upper part of the endless material feed belt 18 so as to be driven. Therefore, the processed material w supplied into the fitting hole 19
Is supplied while its lower surface is supported by the endless support belt 30, and the lower surface of the endless support belt 30 is not subjected to sliding resistance as it travels, and can be supplied smoothly and stably. There is an effect.

[Brief description of drawings]

FIG. 1 is a front view of a wide belt sander machine showing an embodiment of the present invention.

FIG. 2 is a front view of a main part showing a configuration of a work guide 20 and an endless support belt 30.

FIG. 3 is a plan view of a work guide 20.

[Explanation of symbols]

 2 Material feeding device 6 Belt grinding device 12 Endless sanding belt 18 Endless material feeding belt 19 Fitting hole 20 Work guide 22 Supply path 24 Guide rod 26 Guide rollers 27, 27 Following plate edge 30 Endless support belt 32 Holding frame

Claims (2)

[Claims] 1. An endless material feeding belt, in which a plurality of fitting holes for fitting a small processed material are formed along a longitudinal direction, is hung on a plurality of guide rolls to form a material feeding device, and the material feeding device is provided. In a wide belt sander machine comprising a belt driving mechanism, an endless sanding belt, and a belt grinding device, which are provided opposite to each other through a material feeding path, in the upper part of the device. Are stacked in the vertical direction, and as the endless feeding belt runs,
A work guide having a lower open supply path into which the workpiece is sequentially inserted is rotatably supported by a guide rod extending in the width direction so as to be movable in the width direction. A work material supply device for a wide belt sander machine, characterized in that follower plate edges that come into contact with the both ends of the material feed belt from the outside are arranged on both sides. 2. An endless material feeding belt, in which a plurality of fitting holes for mounting a small processed material are formed along the lengthwise direction, is hung on a plurality of guide rolls to form a material feeding device. In the upper part of the wide belt sander machine, which is formed by installing a belt grinding device facing the belt driving mechanism through a material feeding passage, inside the endless material feeding belt of the material feeding device, An endless support belt is provided, the upper part of which is inscribed in the upper part of the endless material feed belt so as to be driven, and a holding frame which internally contacts the upper part of the endless support belt and supports the belt. Wide belt sander machine processing material supply device.