JPH11188629A - Washing device for belt sander - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing device for a belt sander provided with a dewatering device at the upper side running part of its polishing belt, which can prevent the water leaking in the belt exchanging time, in particular. SOLUTION: While a contactable water receiving body 26b is provided at the lower side of a washing liquid spray nozzle 25, the contactable water receiving body 26b is made changeable to move to an approaching position A where a water receiving edge 30 approaches a polishing belt 10 in the noncontact condition, a contact position; and a retreat position. As a result, in the condition when the polishing belt 10 runs, and a liquid injection operation by the washing liquid spray nozzle 25 is generated, the water receiving body 26b is made at the approaching position A, and only when the polishing belt 10 is exchanged, the contactable water receiving body 26b is made once at the contact position before a receiver roll 15 and a dewatering roll 16 are separated relatively, and as a result, even though the receiver roll 15 and the dewatering roll 26 are separated, and a washing liquid storing at the upper side flows down, it is recovered by the contactable water receiving body 26b, and the downward flowing of the washing liquid can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt sander cleaning apparatus used for grinding and polishing wood.

[0002]

2. Description of the Related Art In the above-mentioned belt sander, a cleaning liquid is sprayed from a cleaning liquid spray nozzle onto an abrasive surface of a polishing belt stretched over a plurality of support rolls, and the abrasive surface is cleaned to prevent clogging. What is done is generally well known. Further, in order to prevent the cleaning liquid supplied to the belt surface from being applied to the work material, a receiving roll positioned inside the polishing belt and a draining roll pressed against the receiving roll side via the polishing belt are provided. The thing is Tokubo Sho 5
Various proposals have been made, such as 1-112158, JP-A-62-54663, and JP-B-64-185. Usually, a water receiver is disposed below the draining roll, and the washing liquid squeezed out by the draining roll is collected in the water receiver.

[0003]

In order to collect the washing liquid collected by the draining roll so as not to flow downward by the water-contacting receiver, the water receiving edge of the water receiver is directly attached to the abrasive surface of the polishing belt. Contact may be considered. However, if the polishing belt is run while the water receiving edge of the water receiving body is in contact with the abrasive grain surface, the water receiving edge is worn, and the abrasive grain surface itself is greatly worn.

On the other hand, as shown in Japanese Patent Publication No. 51-12158, in a polishing belt provided with a draining device in an upper running portion of the polishing belt, the cleaning liquid supplied to the abrasive grain surface from a cleaning liquid jet nozzle is not used. , With the polishing belt traveling upward,
The cleaning liquid is guided upward, so that the amount of the cleaning liquid flowing downward from the gap between the water receiver and the abrasive grain surface is relatively small even without bringing the water receiving edge of the water receiver into direct contact with the abrasive grain surface. However, even in such an embodiment, the liquid remains between the upper portion of the receiving roll and the draining roll, and when the polishing belt is replaced, the running of the polishing belt is stopped, and the receiving roll and the draining roll are relatively moved. When separated, the accumulated liquid flows down at once, causing a problem that a large amount of liquid flows from the gap between the water receiving edge of the accessible water receiving body and the abrasive grain surface. SUMMARY OF THE INVENTION The present invention is directed to a polishing belt in which a water draining device is provided in an upper traveling portion thereof, and an object thereof is to solve the above-described problems.

[0005]

According to the present invention, there is provided a polishing belt, which is disposed on an upper running portion of a circulating running belt stretched over a plurality of support rolls and is located inside the polishing belt, and a polishing roll. A draining roll comprising a draining roll pressed against the receiving roll side via a belt, and an actuating device capable of moving both rolls relatively to each other in a close-off direction; and In a cleaning device of a belt sander machine having a cleaning liquid injection nozzle opposed to the surface,
At least one water-receivable receiver is disposed at a position below the cleaning liquid spray nozzle, and the movement controller controls the water-receptor receiver so that the water-receiving edge provided at the front edge of the water-receptor receives the abrasive surface of the polishing belt. A cleaning device for a belt sander, wherein the cleaning device can be moved and converted into a position in a non-contact state, a position in contact with the abrasive grain surface of the polishing belt, and a retreat position.

In this configuration, the water receiving edge provided at the front edge of the water receiver is brought into non-contact proximity with the polishing belt running and performing the liquid jetting operation by the cleaning liquid jetting nozzle. And Thereby, abrasion due to contact between the polishing belt and the water receiving edge is avoided. On the other hand, when replacing the polishing belt, before the receiving roll and the draining roll are relatively separated from each other, the water receiving edge once provided on the front edge of the wettable water receiving body is temporarily fixed to the abrasive grain surface of the polishing belt. And the position where it contacts. As a result, even if the receiving roll and the draining roll are separated from each other and the cleaning liquid accumulated between the receiving roll and the draining roll flows down, there is no gap between the abrasive grain surface and the water receiving edge. The water is collected by the water receiver, so that the washing liquid can be prevented from flowing downward. After that, the accessible water receiver is set to the retracted position to facilitate replacement of the polishing belt.

In such a configuration, two water receivers are disposed above and below the cleaning liquid injection nozzle, and at least one of the water receivers is used as the contactable water receiver.
With the movement control device, the water receiving edge provided on the leading edge thereof can be moved and converted into a position in which the water receiving edge is in non-contact with the abrasive surface of the polishing belt, a position in contact with the abrasive surface of the polishing belt, and a retracted position. Is also good.

Further, in such a configuration, when the polishing belt is running and the liquid jetting operation is performed by the cleaning liquid jetting nozzle, the water receiver disposed at the upper portion is provided with the water provided at the front edge thereof. The receiving edge is set to a position in which the water receiving body is close to the non-contact state, and the water receiving body disposed at the lower portion is either a position where the water receiving edge provided on the front edge is retracted or a position in which the water receiving body is in the non-contact state. It is better to cover and place both in proximity to collect the cleaning liquid, but the polishing belt runs stably at the position where it is sandwiched between the receiving roll and the draining roll, and the main water receiving body Is in the non-contact proximity position, the non-contact between the water receiving edge and the abrasive grain surface is maintained, but below this, the polishing belt fluctuates in and out as the material travels and the lower water Even if the receiver is slightly separated, the water receiving edge may come into contact with the abrasive grain surface due to the movement of the polishing belt. Therefore, when the running of the polishing belt is not stable, it is desirable to set the lower water receiver to the retracted position.

When the polishing belt is replaced, before the receiving roll and the draining roll are relatively separated from each other, the accessible water receiving body is set to a position in contact with the abrasive grain surface, and the surface of the abrasive grain surface is The washing liquid that flows down along the path is collected by the wettable receiver.

By providing two upper and lower water receivers in this way, it is possible to perform draining as completely as possible, and it is possible to select an optimum position corresponding to the running state of the polishing belt. It should be noted that the accessible water receiver may be applied to any of the upper and lower sides of the water receiver, or both may be applied as the accessible water receiver.

On the other hand, a suction hopper for vacuum-suctioning the cleaning liquid adhering to the abrasive grain surface of the polishing belt or the peripheral surface of the draining roll may be provided immediately below the draining device. In such a configuration, the collection of excess water can be favorably performed by the suction hopper.

Further, a drop-preventing roller may be provided directly below the cleaning liquid jet nozzle to contact the abrasive surface of the polishing belt and guide the cleaning liquid transferred to the peripheral surface to the water receiver. . The fall prevention roller may be configured to forcibly rotate in addition to the idle roller that rotates following the polishing belt. The cleaning liquid that comes into contact with the surface of the roller due to the contact of the fall prevention roller draws the cleaning liquid onto the water receiver by rotating outward.

[0013]

FIG. 1 shows the outline of a belt sander machine. Here, 1 is a material feeding device, and a driving roll 2
, And an endless running material belt 4 is stretched over the driven roll 3, and the horizontal running portion above the endless running material belt 4 is used as a material feeding portion. Here, a cutting device 6 is provided on the material feeding device 1 and supported by the main body frame 5, and a space between the material feeding device 1 and the cutting device 6 is a material feeding passage.

The cutting device 6 includes support rolls 7 and 8 disposed along a material feeding path, and an upper steering and support roll 9.
And a guide roll on the side, and the polishing belt 10 is stretched over each roll. The support roll 9 is a polishing belt 1
It also has a function as a tension roll that tensions 0.

A polishing belt 10 between the support rolls 7 and 8
The stepping device 12 is disposed inside the inside, and its lower surface is used as a polishing portion. When the front end of the work material reaches the polishing portion, the stepping device 12 presses the polishing belt 10 toward the material feeding passage, and the passage of the work material is performed, and timing control is performed to release the tread pressure, It has the function of properly polishing the upper surface of the work material.

Next, a cleaning apparatus according to the present invention will be described. A draining device 14 including a receiving roll 15 located inside the polishing belt 10 and a draining roll 16 located outside the polishing belt 10 is disposed in the upper traveling portion of the polishing belt 10 between the support rolls 8 and 9. . These rolls 15 and 16
It is composed of idler rolls, and rotates following the contact with the polishing belt 10. The receiving roll 15 is fixed to the main body frame 5. On the other hand, the draining roll 16 can be moved by the actuator 17 in a direction away from the draining roll 16.

The structure of the actuator 17 will be described with reference to FIG. The draining roll 16 is pivotally supported by a tilting link 20 pivotally supported by a shaft 19 on the main body frame 5. It is supported by the link 20. As a result, when the transfer cylinder 21 is driven and the rod 22 expands and contracts, the tilt link 20
, And the draining roll 16 moves in the direction away from the receiving roll 15.

Immediately below the draining device 14, a cleaning liquid spray nozzle 25 is disposed with its mouth end facing the abrasive surface of the polishing belt 10.

Further, below the cleaning liquid injection nozzle 25,
The main water receiving body 26a and the accessible water receiving body 26b are respectively disposed vertically. The water receivers 26a and 26b have a liquid reservoir inside and an acute angle at the front, and have a front edge made of a wear-resistant metal material, a wear-resistant synthetic rubber, a flexible material such as a leaf spring, or the like. The water receiving edge 30 is formed.

Main water receiving body 26a, accessible water receiving body 26b
Can be moved by the respective movement control devices. This movement control device includes a transfer cylinder 28 capable of controlling a position stop of a lock cylinder or the like attached to the main body frame 5.
a, 28b, and the rear ends of the water receivers 26a, 26b are fixed to the cylinder rod 29, respectively. The transfer cylinder 28a is a cylinder rod 2
9 can be stopped at least at two positions, and by its operation, the main water receiving body 26a is moved to the position A (hereinafter referred to as the proximity A) where the water receiving edge 30 provided at the front edge thereof comes close to the abrasive grain surface of the polishing belt 10 in a non-contact manner. Position) and at least two positions of the retreat position C. It should be noted that three-position conversion is possible, and the following accessible water receiver may be applied as the main water receiver 26a.

On the other hand, the transfer cylinder 28b is capable of stopping the cylinder rod 29 at three positions, and by the operation of the transfer cylinder 28b, the water receiving edge 30 provided on the front edge thereof The position can be converted into a position A that is in non-contact proximity to the surface, a position B that is in contact with the abrasive grain surface of the polishing belt 10 (hereinafter referred to as a contact position), and a retracted position C. Here, as described above, the position B at which the main water receiver 26a also contacts the abrasive grain surface of the polishing belt 10 is set.
May be converted to

In such a configuration, the main water receiving body 26a is provided with the water receiving edge 30 provided at the front edge thereof while the polishing belt 10 is running and the cleaning liquid injection nozzle 25 is performing the liquid injection operation. The contactable non-contact position is set, and the water receiving body 26b is set to either the position B or the retreat position C where the water receiving edge 30 provided on the front edge of the water receiving member 26b approaches the noncontact state (see FIG. 2). . At this time, the cleaning liquid supplied to the abrasive grain surface from the cleaning liquid spray nozzle 25 is transported and guided upward while the polishing belt 10 is traveling upward, so that the polishing belt 10 and the water receiving edges 30 of the water receiving bodies 26a and 26b are guided. Even if there is a gap between the cleaning liquid and the gap, the amount of the cleaning liquid flowing downward from the gap can be ignored.

By the way, both water receivers 26a, 26b
Is more suitable for collecting the cleaning liquid.
However, the running of the polishing belt 10 is stable at the position where the polishing belt 10 is sandwiched between the receiving roll 15 and the draining roll 16, and the main water receiving body 26a is in the non-contact proximity position A, and Non-contact with the grain surface is maintained. However, below that, depending on the material, the polishing belt 1
0 moves inward and outward along with the traveling, and when the accessible water receiving body 26b is set to the non-contact proximity position A, the distance between the water receiving edge 30 and the abrasive grain surface is small.
May cause the water receiving edge 30 to come into contact with the abrasive grain surface.

If the running of the polishing belt 10 is not stable, the lower water receiver 26b is set at the retracted position C as shown in FIG. In this case as well, since the accessible water receiving body 26b is located immediately below the main water receiving body 26a, it is necessary to collect droplets of the cleaning liquid and receive the liquid overflowing from the main water receiving body 26a below. It can act.

On the other hand, as described above, in the case where the polishing belt 10 does not fluctuate, in order to sufficiently collect the cleaning liquid falling along the surface of the polishing belt 10 even below, as shown in FIG. As described above, both the main water receiving body 26a and the accessible water receiving body 26b are set to the proximity position A.

Next, when replacing the polishing belt 10,
The traveling drive of the polishing belt 10 is stopped, and the actuating device 17 is driven to drive the draining roll 1 against the receiving roll 15.
6 is separated. By the way, receiving roll 1
5, the cleaning liquid stays in the upper interval x of the draining roll 16 as shown in FIGS.
The cleaning liquid that has stayed due to the separation of 6 flows down all at once.

Therefore, before driving the operating device 17, the lower accessible water receiving body 26b is brought into contact with the abrasive grain surface at a position B.
And As a result, the water receiving edge 3 of the accessible water receiving body 26b
There is no gap between the polishing belt 10 and the polishing belt 10, and the cleaning liquid flowing down along the surface of the abrasive grain surface is shut off as completely as possible by the water-contactable receiving body 26b. At this time, the main water receiver 2
6a, as shown in FIG. 4, the liquid can be collected at the retreat position C or at the close position A. In the case where the main water receiving body 26a is also an accessible water receiving body, the main water receiving body 26a may be set to the contact position B.

Furthermore, a water receiver that can be used is applied only to the upper main water receiver 26a, and a water receiver that can only change the proximity position A and the retreat position C can be applied to the lower part. In this case, only the main water receiver 26a is set to the contact position B when the polishing belt is attached or detached.

The reason why only the conversion between the proximity position A and the retreat position C is possible on the other side is to avoid complicating the control mechanism due to the three-position conversion of the water receiver 26. There is no problem in the operation of converting to a wettable receiver.

Then, after the washing liquid between the receiving roll 15 and the draining roll 16 flows down, as shown in FIG. 5, the transport cylinder 2 of the main water receiving body 26a and the accessible water receiving body 26b.
8a and 28b are driven to the retracted position C, and the polishing belt 1
0 is easily released.

As described above, in the above-mentioned embodiment, since the upper and lower water receivers are provided, the water can be drained as completely as possible, and the optimum condition corresponding to the running state of the polishing belt 10 and the like can be obtained. And an advantage that various position modes can be selected.

Although the above-described configuration is such that the two water receivers are applied vertically, the water-accessible receiver may be used alone.

FIG. 6 shows a structure in which a suction hopper 31 for vacuum-suctioning the cleaning liquid staying on the abrasive surface of the polishing belt 10 or the peripheral surface of the draining roll 16 is provided immediately below the draining device 14.

Here, FIG. 6A shows an arrangement in which the mouth of the suction hopper 31 is disposed directly below the cleaning liquid injection nozzle 25. In this case, the injection hole of the cleaning liquid injection nozzle 25 is positioned downward. As an approach, the recovery rate by the suction hopper 31 is improved.

FIG. 6B shows an arrangement in which the mouth of the suction hopper 31 is disposed immediately below the draining roll 16. In this case, the injection hole of the cleaning liquid injection nozzle 25 is located on the draining roll 16 side. .

FIGS. 6 (a) and 6 (b) show a case where a single accessible water receiving body 26 is provided, while FIGS. 26a and 26b are provided. The operation of the water receivers 26a and 26b is as described above.

FIG. 7 shows a configuration in which a fall prevention roller 32 is disposed immediately below the cleaning liquid jet nozzle 25, and the cleaning liquid is led out to the water receiving body 26 (main water receiving body 26a) in contact with the abrasive grain surface. It depends on. The fall prevention roller 32 is composed of an idler roller, rotates in a clockwise direction in the figure following the travel of the polishing belt 10, and drops the cleaning liquid attached to the surface onto the water receiving body 26 via the outside. I do.

Here, FIG. 7A shows that the fall prevention roller 32 is disposed between the suction hopper 31 and the water receiver 26. In such a configuration, the cleaning liquid injection nozzle 25
Is directed to the suction hopper 31, and the cleaning liquid not collected by the suction hopper 31 is
Is collected on the water receiving body 26 by adhering to the surface thereof with the following rotation.

FIG. 7B shows an arrangement in which the mouth of the suction hopper 31 is disposed immediately below the draining roll 16. In this case, the injection hole of the cleaning liquid injection nozzle 25 is located on the draining roll 16 side. .

FIGS. 7 (a) and 7 (b) show a case where a single accessible water receiving body 26 is provided, while FIGS. 26a and 26b are provided. The operation of the water receivers 26a and 26b is as described above.

FIG. 8 shows the state of the fall prevention roller 3 as described above.
2, the water receiving edge 3 of the water receiving body 26
0 is brought into contact with the outer surface of the fall prevention roller 32. That is, as shown in FIG. 8A, the cleaning liquid conveyed along the surface of the fall prevention roller 32 is scraped off by the water receiving edge 30 and can be collected in the accessible water receiving body 26. Things.

Here, FIG. 8A shows a state in which the suction hopper 31 is omitted, and FIG. 8B shows a state in which the suction hopper 31 is disposed between the cleaning liquid jet nozzle 25 and the fall prevention roller 32. The suction hopper 31 is disposed between the cleaning liquid jet nozzle 25 and the water receiving body 26. Even in such a configuration, the accessible water receiving body 26 has the proximity positions A,
It can be moved to the contact position B and the retreat position C. In addition to the position shown in FIG. 8, the fall prevention roller 32 can be moved to a retracted position so that the polishing belt 10 can be detached. As described above, the water receiving edge 30 of the water receiving body 26 is brought into contact with the outer peripheral surface of the fall prevention roller 32 and the polishing belt 10.
Is made in contact with the abrasive grain surface, so that a flexible material is optimal. In this configuration, the polishing belt 10
In the case of replacing, the draining roll 16 and the fall prevention roller 32 are retracted, and the accessible water receiving body 26 is moved to the contact position B, as shown by the arrow in FIG.

The structure shown in FIG.
The two main water receivers 26
a, You may apply the water contact receiving body 26b. (See the chain line in Fig. 8)

FIG. 9 relates to a modification of the configuration of FIG. 8A, in which water receiving bodies 26a and 26b are used immediately below the fall prevention roller 32. Here, FIG. At this time, an operation mode is shown in which the water receiving edges 30 of the water receiving bodies 26a and 26b are brought into contact with the abrasive grain surfaces, respectively. Also,
FIG. 9B shows a configuration in which only the water receiving edge 30 of the lower water receiving body 26b is brought into contact with the abrasive grain surface. In this embodiment, the water receiving edge 30 of the water receiving body 26a is prevented from falling. The roller 32 is circumscribed. Although the above embodiments have been described with reference to the top grinding type, the present invention is also applicable to the bottom grinding type.

[0045]

According to the present invention, a water draining device is provided at the upper traveling portion of the polishing belt, and as described above, one or more accessible water receivers are disposed below the cleaning liquid jet nozzle. At the same time, the movable water receiving body can be moved and converted into a proximity position A where the water receiving edge approaches in a non-contact manner, a contact position B, and a retreat position C. For this reason, in a state where the polishing belt is running and the liquid ejecting operation is performed by the cleaning liquid ejecting nozzle, the water receiver is set in the proximity position A, and only when the polishing belt is replaced, the receiving roll and the draining roll Before the relative separation, the contacting roller is once set to the contact position B, so that the receiving roll and the draining roll are separated from each other, and the cleaning liquid accumulated between the receiving roll and the draining roll is removed. Even if it flows down, since there is no gap between the abrasive grain surface and the water receiving edge, the cleaning liquid can be collected by the accessible water receiving body and the downward flow of the cleaning liquid can be prevented.

When the polishing belt is running, the water receiving edge is not in contact with the abrasive grain surface, so that the wear of the abrasive grain surface and the water receiving edge is prevented, and when the polishing belt is replaced. In this case, the cleaning liquid can be prevented from flowing out, and the replacement of the polishing belt can be easily performed.

[Brief description of the drawings]

FIG. 1 is a side view of a belt sander according to the present invention.

FIG. 2 is a side view showing a cleaning state of the cleaning apparatus according to the present invention.

FIG. 3 is a side view showing a cleaning state of another embodiment.

FIG. 4 is a side view showing an initial operation state of a polishing belt replacement operation.

FIG. 5 is a side view showing an operating state immediately before the replacement operation of the polishing belt.

FIG. 6 is a conceptual diagram of an embodiment to which a suction hopper 31 is applied.

FIG. 7 is a conceptual diagram of an embodiment to which a fall prevention roller 32 is applied.

FIG. 8 is a conceptual diagram of an embodiment in which a water receiving edge 30 is brought into contact with a fall prevention roller 32.

FIG. 9 is a conceptual diagram of another embodiment to which the fall prevention roller 32 is applied.

[Explanation of symbols]

 Reference Signs List 10 polishing belt 14 draining device 15 receiving roll 16 draining roll 17 operating device 26, 26a, 26b water receiving body 25 cleaning liquid injection nozzle 28a, 28b transport cylinder (movement control device) 31 suction hopper 32 fall prevention roller

Claims (4)

[Claims] A circulating polishing belt stretched over a plurality of support rolls, disposed on an upper traveling portion of the polishing belt and positioned on the inner side of the polishing belt; A flushing device comprising an actuating device, comprising a draining roll pressed against, and capable of relatively moving both rolls in the direction of approach, and a cleaning liquid spray nozzle directly below the draining device and opposed to the abrasive grain surface of the polishing belt. In a cleaning device of a belt sander machine comprising: a water receiving receiver is disposed at a position below the cleaning liquid injection nozzle, and the movement control device moves the water receiving receiver to a front edge thereof. A belt sander characterized in that the water receiving edge can be moved and converted into a position in which the provided water receiving edge is in non-contact with the abrasive grain surface of the polishing belt, a position in contact with the abrasive grain surface of the polishing belt, and a retracted position. Machine cleaning equipment. 2. At a position below the washing liquid injection nozzle, two water receivers are arranged vertically and at least one of the water receivers is provided as a contactable water receiver on a front edge thereof by a movement control device. The water receiving edge provided is capable of being moved and converted into a position in non-contact with the abrasive grain surface of the polishing belt, a position in contact with the abrasive grain surface of the polishing belt, and a retracted position. A cleaning device for a belt sander according to claim 1. 3. A suction hopper for vacuum-suctioning a cleaning liquid adhering to an abrasive surface of a polishing belt or a peripheral surface of a draining roll is provided immediately below the draining device. Cleaning equipment for belt sander machines. 4. A drop-preventing roller is provided directly below the cleaning liquid jet nozzle to contact the abrasive grain surface of the polishing belt and guide the cleaning liquid transferred to the peripheral surface to the water receiver. The cleaning device for a belt sander machine according to claim 1, wherein