JPH0994751A - Oscillating angle range regulating device for steering roller in belt sander machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a oscillating angle range regulating device for steering roller which can improve the efficiency of regulating work. SOLUTION: A reciprocating driving mechanism for reciprocatingly-oscillating a steering roller is mounted on a mounting plate fitted so as to move in the front/rear direction. An operating shaft 37a where a turning handle 40a is attached to an external end part protruding to the side is supported against a fixed surface, and at the fixed surface, a linking shaft 42 in the front/rear direction which is screwed in a screwing piece 47 fixed on the mounting plate is supported. An operating gear 39 fixed on the operating shaft 37a is linked with a driven gear 43 fixed on the linking shaft, and the linking shaft 42 is turned by the turning adjustment of a turning handle 40a to move the mounting plate in the front/rear direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt sander machine having a steering roller provided for running an endless sanding belt within a constant track range in the width direction.

[0002]

2. Description of the Related Art It is difficult for endless sanding belts to have a uniform circumferential length in the width direction due to variations in manufacturing and subsequent reasons. It may move along the axial direction of, and eventually detach. Therefore, a steering roller is used as the traveling guide roller, the steering roller is swung in the left-right direction, and the sanding belt is allowed to travel within a certain track range to prevent the separation. There is. This swing control includes a method of constantly swinging back and forth, and a method of detecting the side end position of the belt and swinging and adjusting only when deviation occurs.

[0003]

By the way, since the swinging angle of the steering roller is constant every time, if the swinging angle range of the steering roller is fixed, the circumferential length of the endless sanding belt becomes smaller. Movement due to deviation cannot be corrected well.
Therefore, in order to adjust the swinging angle range of the steering roller, the configuration disclosed in Japanese Utility Model Application Laid-Open No. 49-198885 has been proposed. This configuration is a cylinder rod of an air cylinder that serves as a drive source for swinging the steering roller,
The position of linkage with the swing frame that pivotally supports the steering roller is adjusted in the front-rear direction by rotating the handle directly screwed to the screw provided on the rod, and the swing angle of the steering roller is thereby adjusted. It is an attempt to adjust the range.

However, in this means, this adjustment involves rotating the handle with respect to the cylinder rod and must be performed in the vicinity of the endless sanding belt, and the running state of the endless sanding belt is confirmed. However, the running speed is 2
Since it is a high speed of 0 m / s, it requires careful attention to safety and requires careful adjustment work, resulting in poor work efficiency. The present invention
An object of the present invention is to provide a rocking angle range adjusting device for a steering roller that can improve the efficiency of such adjustment work.

[0005]

SUMMARY OF THE INVENTION The present invention is a belt sander provided with a steering roller around which an endless sanding belt is hung and which reciprocally swings a predetermined angle about a vertical support axis, with respect to a fixed surface. A mounting plate is mounted so as to be movable in the front-rear direction, a steering roller is mounted on the mounting plate, and a reciprocating drive mechanism that reciprocally swings around the support shaft is mounted on the mounting surface. Rotatably supports an operating shaft with a rotating handle attached to the outer end protruding toward the fixed surface.
Rotation of the rotating handle by supporting a front-rear direction linking shaft that is screwed to a threaded piece that is fixed to the mounting plate, and linking an operating gear that is fixed to the operating shaft with a driven gear that is fixed to the linking shaft. A swinging angle range adjusting device for a steering roller in a belt sander machine, characterized in that a linking shaft is rotated by adjustment to move a mounting plate in a front-back direction.

In this structure, the handle shaft having the rotating handle at the outer end is rotatably inserted into the maintenance door disposed on the side of the endless sanding belt of the apparatus housing containing the sanding head. Alternatively, the rotary handle may be detachably attached to the operation shaft by linking the inner end of the handle shaft with the operation shaft with the maintenance door closed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an example of a belt sander machine, in which an elevating frame 3 which is operated to elevate and lower by a handle 2 is arranged above a lower frame 1, and a driving roller 4 and a driving roller 4 are provided in front and rear positions of the elevating frame 3. The driven roller 5 is pivotally supported, and the material feeding belt 6 is stretched over both rollers 4, 5.

A head frame 8 is attached to the mounting space of the apparatus housing 7 which rises from the rear portion of the lower frame 1. On the upper part of the frame 8, there is rotatably provided a shaft support frame 9 which is supported by a support shaft 14 and which can be freely moved up and down by a known device, and a steering roller 10 which also serves as a guide roller and a tension roller. Is pivotally supported. A drive guide roller 11 and a driven guide roller 12 are axially supported at the front and rear of the lower portion of the head frame 8, and an endless sanding belt 13 is stretched around the rollers 11, 12 and the steering roller 10 as a guide roller group.

The steering operation of the steering roller 10 is performed by reciprocally moving the arm rod 14 hung from the side surface of the shaft support frame 9 by the air or hydraulic cylinder 23 constituting the reciprocating drive mechanism. It is performed by swinging 9 around the support shaft 17 in the left-right direction.

The structure of a reciprocating drive mechanism for reciprocally swinging the steering roller 10 about the support shaft 17 (support shaft line) will be described in more detail with reference to FIGS.

A mounting plate 2 is provided on the side surface of the head frame 8.
On the upper part of the mounting plate 20 to which 0 is fixed, a mounting plate 22 that is fitted to a lateral guide 21 and is movable left and right by its guiding action is fitted. This mounting board 2
2, a cylinder 23 is fixed in the left-right direction, and as shown in FIG. 3, a connecting ring 27 having an annular groove is bolted to the end of a cylinder rod 25a protruding from the right side of the piston 24 in the figure. It is fixed by 26 and the arm rod 14 is fitted in the annular groove. Then, the piston 24 is reciprocally moved in the cylinder 23 by controlling the supply of air or hydraulic pressure into the cylinder 23, whereby the arm rod 14 is reciprocally moved by the forward and backward movement of the cylinder rod 25a. Thus, the steering roller 10 is reciprocally rocked.

In such a structure, the lateral movement stroke of the arm rod 14 is determined by the position of the restricting piece 31 screwed into the male screw 30 formed at the end of the cylinder rod 25b of the piston 24 protruding from the left side in the figure. Is determined by adjusting the screwing position thereof. The restricting piece 31 is held in position by the lock nut 33. That is, FIG.
, The cylinder rods 25a and 25b are
The maximum left position is determined at the position where the piston 24 contacts the left inner wall in the cylinder 23, and the maximum right position is determined at the position where the restriction piece 31 contacts the left outer wall of the cylinder 23. Therefore, the interval s becomes the lateral movement width of the arm rod 14, and the swing angle of the steering roller 10 is determined by the interval s. In this configuration, the swing angle range is determined by the position of the cylinder 23 (mounting plate 22) and the swing angle.

If the swing angle range of the steering roller is fixed, the movement of the endless sanding belt due to the deviation of the circumferential length cannot be corrected well. In this case,
The position adjustment of the restriction piece 31 is intended for the swing angle by adjusting the interval s, and the swing angle range cannot be adjusted.

Therefore, the first embodiment has the following structure according to the main part of the present invention. The mounting plate 20 is provided with a gear box 34, and an operation shaft 37a having a rotary handle 40a attached thereto projects laterally from the gear box 34. That is, the gear box 34 is provided with shaft support plates 35 and 36, and the operation shaft 37a is inserted in the width direction into a bearing portion 38 formed on the side shaft support plate 35 and protruding laterally. An operation bevel gear (operation gear) 39 fixed to the inner end thereof is arranged in the gear box 34.
Further, the rotating handle 40a fixed to the operating shaft 37a is in contact with the outer end of the bearing portion 38. A link shaft 42 is rotatably inserted in the left and right direction on a shaft support plate 36 on the left side in the drawing, and a driven bevel gear (driven gear) 43 fixed to the inner end of the gear box 34 is attached to the operation bevel gear. 39 is engaged. A male screw 44 is formed on the outer end of the link shaft 42.

On the other hand, a screwing piece 47 having a female screw 48 formed at the hanging lower end thereof is fixed to the mounting plate 22,
The male screw 44 of the link shaft 42 is screwed into the female screw 48.

When the rotary handle 40a is rotated, the linkage shaft 42 is rotated by the meshing of the operation bevel gear 39 and the driven bevel gear 43, and the feeding action of the male screw 44 causes the linkage shaft 42 to move along the linkage shaft 42. The screwing piece 47 moves in the left-right direction, whereby the mounting plate 22 to which the screwing piece 47 is fixed follows left and right. The cylinder 2 is attached to the mounting plate 22.
Since 3 is mounted, the swinging angle range of the steering roller 10 itself moves. Therefore, with respect to the widthwise deviation of the circumferential length of the endless sanding belt 13,
The steering roller 10 can be swung optimally. The rotating handle 40a is non-rotatably held by a screw 49 screwed on the bearing portion 38.

In such a structure, the rotary handle 40a
Are projected laterally via the operation bevel gear 39 of the shaft support plate 35. Therefore, the operator can rotate the endless sanding belt 13 laterally of the head frame 8 while watching the traveling state of the endless sanding belt 13, which simplifies the adjustment work.

FIG. 6 shows a second embodiment,
A connecting end 50 having a quadrangular cross section is formed at the outer end of the operation shaft 37b that is inserted into the shaft support plate 35. On the other hand, the bearing 56 provided on the maintenance door 55 that shields the mounting space of the device housing 7
Then, the handle shaft 51 is inserted. The handle shaft 51 has an inner end formed with a linking member 52 that fits into the linking end 50, and an outer end to which the rotary handle 40b is fixed. And
When the maintenance door 55 is closed (see the arrow), the handle shaft 51 is connected to the operation shaft 37b by fitting the link end 50 and the link 52. Accordingly, the screwing piece 47 can be moved and adjusted in the left-right direction by operating the rotary handle 40b from the outside of the maintenance door 55, and the swinging angle range of the steering roller 10 can be easily adjusted. it can. Incidentally, in order to confirm the running state of the endless sanding belt 13 suspended on the steering roller 10, various confirmation means such as forming an opening in the maintenance door 55 can be applied.

FIG. 7 shows a third embodiment. In the first embodiment shown in FIG. 5, a worm 60 is fixed to the inner end of the operating shaft 37a as the operating gear, and the linking shaft 42 as the driven gear.
The worm gear 61 is fixed to the inner end of the. This structure has an advantage that the gear ratio is large and fine adjustment is possible. Of course, the operating shaft 3
A worm gear may be fixed to the inner end of 7a, and a worm may be fixed to the inner end of the linkage shaft 42. The other configurations are similar to those described above, and the same reference numerals are given to omit the description.

Similarly, in FIG. 8, in the second embodiment shown in FIG. 6, a worm 60 is fixed to the inner end of the operating shaft 37a, and a worm gear 61 is fixed to the inner end of the linking shaft 42. It shows a fourth embodiment. Other configurations are
The same as the above, the same reference numerals are given and the description is omitted.

[0021]

As described above, according to the present invention, the reciprocating drive mechanism for reciprocally swinging the steering roller is mounted on the mounting plate mounted so as to be movable in the front-rear direction, and the fixing surface is laterally moved. An operating shaft having a rotating handle attached to the protruding outer end is rotatably supported, and a fixing shaft in the front-rear direction that is screwed into a screwing piece fixed to the mounting plate is also supported on the fixed surface. The operation gear fixed to the operation shaft is linked to the driven gear fixed to the linkage shaft, and the linkage shaft is rotated by the rotation adjustment of the rotary handle so that the mounting plate is moved in the front-back direction. The rotation handle can be projected laterally, and the swing angle range of the steering roller can be adjusted at a position separated from the endless sanding belt, which improves maintenance efficiency.

In addition, a handle shaft having a rotating handle at its outer end is rotatably inserted through a maintenance door, which is arranged on the side of the endless sanding belt, of the apparatus housing incorporating the sanding head, and the maintenance is performed. With the configuration in which the inner end of the handle shaft is linked to the operation shaft with the door closed, the rotary handle is located outside the device housing, which is excellent in that maintenance is easier. There is an effect.

[Brief description of drawings]

FIG. 1 is a schematic front view of a belt sander machine including a sanding belt deviation detection device.

FIG. 2 is an enlarged front view of a main part showing the first embodiment.

FIG. 3 is a plan view of an essential part of the first embodiment, showing only a cylinder 23 in a transverse manner.

FIG. 4 is a left side view of the first embodiment.

FIG. 5 is a sectional view taken along line AA of FIG. 2;

FIG. 6 is a cross-sectional view of the second embodiment.

FIG. 7 is a cross-sectional view of the third embodiment.

FIG. 8 is a cross-sectional view of the fourth embodiment.

[Explanation of symbols]

 7 Device Case 8 Head Frame 9 Shaft Support Frame 10 Steering Roller 13 Steering Roller 13 Endless Sanding Belt 14 Arm Rod 23 Cylinder 22 Mounting Plate 24 Piston 31 Control Piece 37a, 37b Operation Axis 39 Operation Bevel Gear (Operation Gear) 40a, 40b Rotation Handle 42 Coupling shaft 43 Driven bevel gear (driven gear) 42 Coupling shaft 44 Male screw 47 Screwing piece 48 Female screw 50 Coupling end 51 Handle shaft 55 Maintenance door 60 Worm 61 Worm gear

Claims (2)

[Claims] 1. A belt sander provided with a steering roller around which an endless sanding belt is hung and which reciprocally swings at a predetermined angle about a vertical support axis, and is mounted so as to be movable in the front-back direction with respect to a fixed surface. A mounting plate is mounted, a steering roller is mounted on the mounting plate, and a reciprocating drive mechanism that reciprocally swings around the support shaft is mounted on the mounting plate. The fixed surface is rotated to an outer end portion protruding laterally. An operation shaft rotatably supported by a handle, and a fixed surface also supports a front-rear direction linking shaft that is screwed to a screwing piece fixed to the mounting plate, and fixed to the operation shaft. A belt sander machine characterized in that a gear is linked to a driven gear fixed to a link shaft, and the link shaft is rotated by rotation adjustment of a rotary handle to move a mounting plate in the front-rear direction. Steering roller swing angle range adjustment device. 2. A maintenance shaft provided at a side of an endless sanding belt of a device housing containing a sanding head, a handle shaft having a rotating handle at an outer end thereof is rotatably inserted to perform maintenance. The rotary handle is detachably attached to the operation shaft such that the inner end of the handle shaft is linked to the operation shaft with the door closed.
A device for adjusting a swing angle range of a steering roller in the belt sander machine described.