JPH0223365Y2 - - Google Patents

Description

[Detailed description of the invention] This invention provides a corresponding material feeding belt on the material feeding surface provided on the lower frame, and on the material feeding surface, one side of the lower surface of the workpiece being fed by the material feeding belt, or the lower surface and the rear surface. This invention relates to a mechanism that facilitates the replacement of a material conveying belt in a processing machine in which processing on two surfaces is performed by cutting, grinding, polishing, etc. using a processing mechanism.

In processing machines for woodworking and the like that use a material feeding belt, it is necessary to replace the material feeding belt every time it wears out and becomes unusable. Although a replacement mechanism is provided for this purpose, the replacement work is not easy. Regarding the above-mentioned type of processing machine, a material feeding frame is provided with belt guide rolls on which the material feeding belt is stretched on the left and right sides corresponding to the material feeding surface on the bottom, and a drive motor is attached to the material feeding belt frame. At least one of the belt guide rolls and the output shaft of the motor must be connected by a chain or other transmission band, so the belt can be replaced using the side plate that covers the side of the material belt frame where the transmission band is not provided. However, it is not easy to replace the material conveying belt during actual work, and furthermore, there is a drawback that the operation of the processing machine must be stopped for a long time.

The present invention eliminates such drawbacks and allows belt replacement to be carried out easily and quickly. The material feeding device frame is provided with a moving guide plate that protrudes above the provided material feeding surface, and a material feeding device frame that engages with the moving guide plate to enable forward movement across the material feeding surface. The rear surface corresponding to the lifting guide and the lower surface corresponding to the material feeding surface are released, and cantilevered belt guide rolls supporting the front side are installed on the left and right sides of the frame, and the material feeding belt is hung on both guide rolls. The front side of one belt guide roll and the output shaft of the drive mechanism installed on the material feeding device frame are connected by a conduction band, and the material feeding device frame is moved forward to connect with the elevating member. This feature is characterized by creating a space for replacing the material conveying belt in between.

An embodiment of the present invention will be described.

The rear side and front side referred to in the description are the upper and lower sides of FIG. Left and right are the left and right sides of FIG.

The drawing shows an example of a processing machine equipped with a processing mechanism for grinding and polishing the lower and rear surfaces of the workpiece using a sanding belt. A vertical dovetail guide 4 is provided, a vertical dovetail guide groove 6 is engaged with the guide 4, and a lifting member 5 is provided which enables lifting and lowering. An eave-shaped moving guide plate 7 protruding forward is provided on the material feeding surface 2, and the movement guide plate 7 is provided with a moving guide plate 7 in the feeding direction of the workpiece a shown on the arrow X in FIG. 1 on the material feeding surface 2. Guide elongated holes 8, 8 are provided at two places on the left and right sides to cross over the material feeding surface 2.

Reference numeral 9 denotes a feeding material whose central part in the length direction (left and right direction) is placed against the lower surface of the moving guide plate 7 so as to be able to move back and forth, and which is also tightened by passing a plurality of bolts 10 through the guide elongated holes 8. The frame 9 of the apparatus frame can be moved in the front-rear direction across the material feeding surface 2 by loosening bolts 10, and has partition walls 1 parallel to the length direction of the material feeding surface 2 inside.
1, and open surfaces 12 and 13 are provided on the rear side corresponding to the lifting guide 4 and the lower surface corresponding to the material feeding surface 2,
Belt guide roll 1 in the internal length direction (left and right)
Place 4 and 15. Each of these rolls is of a cantilever type, and the front end of the shaft is passed through the partition wall 11 and supported by a bearing 16, and the rear end is supported by a bearing 18 provided on a removable connecting plate 17.

Reference numeral 19 denotes a material feeding belt that is stretched around the left and right guide rolls 14 and 15 so that the lower running portion runs below the open surface 13; 20, a material feeding device frame 9;
This is a motor for driving the material conveying belt supported by a bracket 21 provided on the upper surface near the rear end, and a reducer 22 is mounted on the upper surface of the material conveying frame 9 at the lower part of the motor.
Attach the sprocket 24 of the output shaft 23 of the reducer 22, and the sprocket 2 at the front end protruding from the partition wall and bearing 16 of one belt guide roll 14.
5 and a transmission band 26 made of a chain. Motor main shaft, reducer input shaft, sprockets 24, 2
5 and the transmission band 26 are covered by a safety cover 27.

The length of the connecting plate 17 is set to slightly exceed the distance between the axes of the belt guide rolls 14 and 15 in consideration of replacing the material conveying belt 19. Guide roll 1
It is also possible to pass between the upper and lower running parts of the material conveying belt 19 between 4 and 15 and make it protrude.

1, 28 is a sanding belt that runs back and forth across the cut on the material feeding surface 2, and 29 is a sanding belt that runs vertically on the rear side of the material feeding surface 2. and are applied to guide roller mechanisms of sanding frames 30 and 31 fixed to both sides of the vertical frame 3, respectively.

The present invention is a processing device that uses such a sanding belt to grind and polish the lower surface or the lower surface and rear surface of the workpiece a.

The present invention has the configuration as exemplified above, and during normal operation, the material feeding device frame 9 is raised and lowered by the lifting guide 4 so that the material feeding belt 19 is located on the upper surface of the workpiece a fed onto the material feeding surface 2. Adjust and further
The longitudinal position is adjusted and fixed by a plurality of bolts 10 passed through the guide holes 8, 8 of the moving guide plate 7.

When replacing the material conveying belt 19, raise the elevating member 5 to a higher position using the elevating guide 4, move the material feeding device frame 9 forward across the material feeding surface 2 as shown in FIG. The material feeding belt 19 is moved away from the guide 4 and the open surface 12 to create a replacement space 41 sufficient to remove the material feeding belt 19 from the belt guide rolls 14 and 15 as shown in chain lines, and the material feeding belt 19 is inserted into that space. Slide it out, remove it, and replace it with a new material feeding belt 19. Of course, this replacement is performed by reducing the distance between the axes of the belt guide rolls 14 and 15. Since such distance adjustment is well known, its explanation will be omitted.

(Effects) In the present invention, the belt guide rolls 14 and 15 for wrapping the material conveying belt 19 are cantilevered and installed on the material feeding device frame 9, and the output shaft of a drive mechanism such as a motor installed on the material feeding device frame 9. 23 and one guide roll 14 on the front side away from the lifting guide 4.
6, and belt guide rolls 14, 15
and the open surface 1 on the rear side of the material feeding device frame.
2 and the lifting guide 4, there is no transmission band that would hinder the replacement of the material conveying belt 19.
By moving forward, a space 41 for replacing the material feeding belt is created between the lifting guide 4 and the open surface 12 on the rear side of the material feeding device frame 9, and this space can be used to perform the work of replacing the belt. Since it is designed to be easy to perform, the belt can be replaced quickly without taking much time, and it is safe because the material feeding belt 19 is not exposed outside the bottom surface of the material feeding device frame during operation. It has the effect of not lacking sex.

[Brief explanation of drawings]

The attached drawings show one embodiment of the present invention.
FIG. 1 is a partially cutaway plan view, and FIG. 2 is an enlarged cutaway front view of the main part. DESCRIPTION OF SYMBOLS 1... Lower frame, 2... Material feeding surface, 4... Elevating guide, 5... Elevating member, 6... Dovetail guide groove, 7
...Movement guide plate, 8 ... Guide slot, 9 ... Material feeding device frame, 10 ... Bolt, 11 ... Partition wall,
12, 13... Open surface, 14, 15... Belt guide roll, 19... Material feeding belt, 20... Motor, 22... Speed reducer, 26... Transmission band, 27...
Safety cover, 41...space for replacement.

Claims (1)

[Scope of utility model registration request] An elevating member that engages with an elevating guide installed on the rear side of the lower frame to enable elevating and lowering engages with a moving guide plate that protrudes above the material feeding surface provided on the frame and the moving guide plate. and a material feeding device frame that enables forward movement across the material feeding surface, and the material feeding device frame has a rear surface corresponding to the lifting guide and a lower surface corresponding to the material feeding surface opened, and the frame Cantilevered belt guide rolls with the front side supported are installed on the left and right sides of the machine, and a material feeding belt is provided to span both guide rolls, and one belt guide roll and the output shaft of the drive mechanism installed on the material feeding device frame The front sides of each are connected by a transmission band,
A material feeding belt exchanging mechanism characterized in that a material feeding device frame is moved forward to create a space for replacing the material feeding belt between the material feeding device frame and the elevating member.