JPH0357412Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The invention relates to a sanding roll adjustment device in a sander machine, and includes a sanding belt that presses the abrasive grain surface against the workpiece to perform grinding and polishing. The degree of pressure applied to the workpiece can be adjusted depending on whether it is heavy grinding, light sanding, or the material of the workpiece, by closing the opening/closing door installed in the dustproof wall of the sander machine, and opening the opening/closing door freely when necessary. It has a field of application that enables it to do things.

(Prior art) As disclosed in Japanese Utility Model Publication No. 51-33037,
Devices for adjusting the degree of pressure of the sanding roll against the workpiece through the sanding belt are known, but there is no device that allows adjustment from the outside without opening the opening/closing door.

(Problems to be solved by the invention) In view of the above, the present invention is a sander machine in which a dustproof wall is provided on the side of the machine frame and an opening/closing door is provided in the opening of the dustproof wall. The problem to be solved is to enable frequent adjustments of the sanding roll's adjustment shaft to be operated remotely without having to open the opening/closing door one by one, and to enable the opening/closing door to be opened when necessary. It is something to do.

(Means for Solving the Problems) The present invention aims to solve the above-mentioned problems. A sanding belt 9 stretched over a sanding roll 8,
In a sander machine, a dustproof wall 16 is provided to cover the sanding belt 9, and an opening/closing door 18 is provided in an opening/closing opening 17 of the dustproof wall 16 corresponding to one side edge of the sanding belt 9. A worm gear 22 is fitted to the shaft portion outside the eccentric portion 15 that is supported by the machine frame, and the worm gear 2
a vertical shaft 23 provided with a worm 24 that engages with 2;
A horizontal shaft 30 is provided that can be interlocked with the vertical shaft 23 by meshing bevel gears, etc., and protrudes from the inner surface of the door 18. A rotary operation member 36 that is connected to or separated from the horizontal shaft 30 is provided, and the rotary operation member 3 can be accessed from the outside while the opening/closing door 18 is closed.
6 rotates the internal horizontal shaft 30, and when the opening/closing door 18 is opened, the rotary operation member 36 is pulled and the horizontal shaft 30 is separated.

(Function) In the present invention, the rotation adjustment of the adjustment shaft 14 that supports the sanding roll 8 by supporting the eccentric part 15 on the machine frame 2 is performed by opening the opening/closing door 18 as in the conventional case. In order to eliminate the trouble of having to manually apply the The horizontal shaft 30 rotates a vertical shaft 23 which is provided so that it can be interlocked with the meshing of bevel gears, etc., and the worm 2 of the shaft 23 rotates.
4 rotates the worm gear 22 of the adjustment shaft 14 and rotates the eccentric portion 15 of the adjustment shaft 14, thereby the sanding roll 8 rotatably supported by the adjustment shaft 14 and the sanding roll 8 that is stretched around the roll 8 are rotated. This is to adjust the degree of pressure contact of the sanding belt 9 against the workpiece, and when opening the door 18, the rotary operation member 36 is pulled from the outside of the door 18, and the horizontal shaft 30 inside the door 18 is moved. The opening/closing door 18 can be opened freely by cutting off the connection with the rotary operation member 36, and the opening/closing door 18 cannot be opened if you forget to pull the rotary operation member 36.
If the user forgets to pull the member 36, he or she will notice immediately, and even if he or she forgets to pull the member 36, no actual damage will occur other than not being able to open the door.

(Embodiment) Figures 1 to 4 and 6 show embodiments of the present invention, in which the driving roll 4 of the material feeding frame 3 is movable in the vertical direction through the machine frame 2 of the belt sander 1. A material conveying belt 6 is stretched between the belt 6 and the driven roll 5, and a steering/tension roll 7 whose axis can be swung on a sanding frame (not shown) provided on the machine frame 2 above the belt 6. An adjustment shaft 14 with eccentric parts 15 on both sides supported by bearings 13 of the machine frame 2 is provided below the roll 7, as shown in FIG. 1, and a sanding roll 8 is installed around the adjustment shaft. Fit freely to rotate, both rolls 7, 8
It has a configuration in which an endless sanding belt 9 is stretched around the sanding belt 9 as a guide mechanism.

The sanding roll 8 presses a sanding belt 9 against the workpiece sent by the material conveying belt 6, and as shown in FIG. A partition plate 12, which forms part of the machine frame 2, is provided around the boundary with the multi-groove pulley 10, and the sanding roll 8 is driven by the partition plate 12. A rotating rubber ring 11 for preventing dust leakage is fitted almost in contact with the edge of the hole.

As shown in FIGS. 3 and 6, the material feeding frame 3 is provided with a dustproof wall 16 surrounding the sanding belt 9, and an opening 17 is opened in front of the dustproof wall 16 for internal inspection and adjustment. , this has an opening/closing door 18
will be established.

A bearing 13 is attached to the machine frame 2 at the side end corresponding to the inner surface of the opening/closing opening 17 of the adjustment shaft 14 as shown in FIG.
An extension shaft 21 is provided extending from the eccentric portion 15 supported through the shaft, and a worm gear 22 is attached to the extension shaft 21.
A vertical shaft 23 supported by a shaft support member is arranged on the side of the worm gear 22, and a worm 24 that meshes with the worm gear 22 is formed or fixed on the shaft 23 as shown in FIG. A first bevel gear 25 is fixed to the upper end of the shaft 23, and a second bevel gear meshing with the first bevel gear 25 is attached to one end of a horizontal rotating shaft 28 supported by a shaft supporting member and directed toward the opening/closing opening 17. 29 is fixed, and the other end is a horizontal shaft 30 with a hexagonal cross section to constitute the first rotation operation section 31.

The opening/closing door 18 has first and third openings with the opening/closing opening 17 closed.
In the state shown in the figure, the shaft-shaped adjustment member 33 protruding from the outside to the inside (left direction in Figure 1) is freely pushed and pulled through the bush 32 attached to the opening/closing door 18, and the knob 34 is attached to the outside of the adjustment member 33. Fixed and adjusting member 33
A fitting part 35 is provided at the distal end of the knob 34 to fit into the horizontal shaft 30 and restrain it in the rotational direction by pushing the knob 34, and to separate from the horizontal shaft 30 by pulling the knob 34. shall be.

The worm gear 22, the worm 24, etc. are covered by a cover 41 fixed to the machine frame 2, and the cover 4
1, an extension shaft 21 is passed through the extension shaft 21, a disc 42 representing a scale 43 in the rotational direction is fixed to the extension shaft 21 as shown in FIG.
A fixing ring 44 loosely fitted in the circular hole 45 is provided.
An indicator 46 is provided on the edge of the hole, and the opening/closing door 18 has a viewing window 47 through which the disc 42 and ring plate 43 can be viewed from the outside.
will be established.

FIG. 4 shows the adjustment shaft 14 on the outer surface of the opening/closing door 18.
Another embodiment is shown in which the degree of adjustment of the knob 34a is attached to the adjustment member 33a, and a disc 42 that rotates in contact with the outside of the opening/closing door 18 is shown.
A is fixed and a scale 43a is placed on the edge of the disk 42a.
An indicator 46 is displayed on a fixing ring 44a that surrounds the disc 42a and is fixed to the opening/closing door 18.

In this embodiment, when opening the opening/closing door 18, the knob 34 of the second rotation operation member 36 and the adjustment member 33 are pulled to separate the fitting part 35 from the horizontal shaft 30 from the connected state shown in FIG. I will do it.

To fine-tune the extent to which the sanding roll 8 presses the sanding belt 9 against the workpiece conveyed by the material conveying belt 6, press the knob 34 of the rotary operation member 36 with the opening/closing door 18 closed (each time). ), insert and connect the fitting part 35 to the horizontal shaft 30 as shown in FIG.
The vertical shaft 23 is rotated in conjunction with the worm 24, the worm gear 22 and the adjustment shaft 14 are rotated, and the eccentric portion 15 supported by the bearing 13 of the machine frame 2 is changed in angle to correct the axis of the sanding roll 8. Give it.

Figure 5 shows an example of application of the present invention.
An adjustment shaft 14 with an eccentric portion 15 supported by a bearing 13 of the machine frame 2a is provided inside the machine frame 2a in the same way as shown in FIG. It is also possible to form an abrasive grain surface on the roll surface by fitting and fixing a cylindrical abrasive paper cloth 9b around it, or by winding it in a spiral shape and fixing it. The rest is the same as the first embodiment.

(Effects of the invention) This invention prevents the grinding wood chips flying up around the sanding roll 8 in the case of a dry type, and prevents internal contamination of the factory due to water mist that accumulates around the sanding roll 8 in the case of a wet type. In order to prevent this, most sanders are equipped with a dust-proof wall 16 and an opening 17 with an opening/closing door 18 attached to the wall. A vertical shaft 23 having a worm gear 22 fitted to the shaft portion outside the supported eccentric portion 15 and provided with a worm 24 that engages with the worm gear 22.
The horizontal shaft 30, which is made interlockable by meshing bevel gears or the like and protrudes from the inner surface of the door 18, is separated from the horizontal shaft 30 on the inner surface of the door 18 by pushing and pulling from the outer surface of the door 18. The opening/closing door 1
Since the rotation operation member 36 can be pulled to release the connection only when it is necessary to open the sanding roll 8, the distance adjustment between the rotation axes of the sanding roll 8 can be performed only when the opening/closing door 18 is closed. This is achieved by pushing and rotating the rotary operating member 36, and in order to open the opening/closing door 18, the rotating operating member 36 is pulled from the outside of the door 18 and separated from the horizontal shaft 30.

[Brief explanation of the drawing]

Figures 1 to 3 show a first embodiment of the present invention, with Figure 1 being a partially vertical side view of the main part, and Figure 2 showing the adjustment shaft 14 with the right and left halves cut at different positions. FIG. 3 is a schematic side view, and FIG. 4 is a front view of another modified embodiment. FIG. 5 is a partially longitudinal side view of the main parts showing an application example of the present invention, and FIG. 6 is a partially cutaway schematic perspective view of the sander. 2, 2a... Machine frame, 8... Sanding roll, 13... Bearing, 14... Adjustment shaft, 15... Eccentric part, 16... Dust-proof wall, 17... Opening/closing opening, 18...
...opening/closing door, 23...vertical axis, 30...horizontal axis, 35...
...Fitting portion, 36...Rotation operation member.

Claims (1)

[Scope of utility model registration request] A sanding belt 9 is provided which is stretched around a sanding roll 8 that rotates around an adjustment shaft 14 in which an eccentric portion 15 is supported on a machine frame, and a dust-proof wall 16 that covers the sanding belt 9 is provided. Opening/closing opening 1 corresponding to one side edge of sanding belt 9
In a sander machine provided with an opening/closing door 18 at 7, an eccentric portion 15 is pivotally supported by the machine frame of the adjustment shaft 14.
The worm gear 22 is fitted onto the outer shaft portion, and the worm 2 is engaged with the worm gear 22.
4, and a horizontal shaft 30 that can be interlocked with the vertical shaft 23 by meshing bevel gears, etc., and protrudes from the inner surface of the opening/closing door 18. A rotary operating member 36 is provided on the inner surface of the opening/closing door 18 to be connected to or separated from the horizontal shaft 30, and while the opening/closing door 18 is closed, the internal horizontal shaft 3 can be controlled from the outside by the rotating operating member 36.
This adjustment device for a sanding roll in a sanding machine is characterized in that when the opening/closing door 18 is opened by rotating the opening/closing door 18, the adjusting device is configured to separate the horizontal shaft 30 by pulling the rotation operating member 36.