JPH0531908U - Sanding machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the structure for dust collection. [Structure] A cleaning head 59 is arranged on the work discharge side of the sanding region. This cleaning head 5
9 is provided with a work air outlet 60 and a belt air outlet 61 integrally. Pressure air is discharged from the work discharge port 60 to the sanding surface of the work, and pressure air is discharged to the surface of the sanding belt 54 from the belt discharge port 61, and the air is sucked corresponding to each sprayed portion of the pressure air. A dust collecting hopper is provided.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a sanding machine having an improved chip dust collecting structure on the rear side of a sanding area.

[0002]

[Prior Art]

 As a sanding machine used for polishing and grinding woodwork materials, resin materials, and the like, there is, for example, a wide belt sander, and its general configuration is as shown in FIG.

A processing table 1 is provided below a main frame (not shown), and an endless feeding belt 2 is stretched between a plurality of rolls so as to move on the processing table 1. The material feeding belt 2 is driven in one direction at a low speed by a motor, and the work W is conveyed thereby. On the other hand, on the upper part of the main frame, an endless sanding belt 4 as a sanding member is stretched above the material feeding belt 2 and between the rolls 3 in a direction along the same, and the sanding belt 4 is provided above the work W passage area. A padding member such as the pad 5 is provided on the back side of the pad. The sanding belt 4 is run in the direction opposite to the direction in which the work is conveyed by the motor, and at that time, the pad 5 presses the work W to polish and grind the surface of the work W.

When a sanding process is performed with this type of belt sander, a large amount of cutting chips are generated. The chips are scattered on the insertion side of the work W as the sanding belt 4 travels, adhere to the sanding surface of the work W, and further adhere to the surface of the sanding belt 4. Therefore, the dust collector for removing these chips has the following configuration. A dust suction duct 6 is provided on the work insertion side of the sanding region, a cleaning nozzle 7 is provided above the dust suction duct 6 to blow pressurized air to the surface of the sanding belt 4, and a dust collecting hopper 7a is provided in the vicinity thereof. Further, a cleaning nozzle 8 and a dust collecting hopper 8a are provided on the work discharge side of the sanding region, and the air flow sucked therein is used to discharge the chips adhering to the surface of the work W.

[0005]

[Problems to be solved by the device]

 However, in the above configuration, a large number of cleaning nozzles and dust collecting hoppers must be provided, and ducts connecting to the compressor and dust collecting fan, etc., must be installed in each of these, which makes the structure considerably complicated. There is.

The present invention has been made in view of the above circumstances, and therefore provides a sanding machine capable of easily collecting dust from the periphery of a sanding area and removing chips adhering to a work or a sanding belt. The purpose is to

[0007]

[Means for Solving the Problems]

 The sanding machine of the present invention is equipped with a sanding mechanism that runs an endless sanding belt to grind and grind a work, and a work transfer mechanism that sends the work to the sanding area by the sanding mechanism. A cleaning head, which is located on the discharge side and integrally has an exhaust port for the work and an exhaust port for the belt, is provided, and pressurized air is blown from the exhaust port for the work to the sanding surface of the work discharged from the sanding area. It is characterized in that a dust collecting hopper is provided on the sanding belt to blow pressurized air from the belt discharge port and to suck the air in response to the blown portion of the pressurized air.

[0008]

[Action]

 From the work air outlet of the cleaning head, pressurized air is blown onto the sanding surface of the work and is reflected and sucked into the dust collection hopper, so that the chips adhering to the work surface are removed from the work in the process. It In addition, compressed air is blown from the air outlet for the belt to the sanding belt, which is reflected and sucked by the dust collecting hopper, so that the chips adhering to the sanding belt in the process are removed from the work. Since the work air outlet and the belt air outlet are provided integrally with the cleaning head, the structure is simpler than that provided separately, and a single supply duct for pressurized air to be supplied thereto is also required. I'm done.

[0009]

[Effect of the device]

 As described above, according to the sanding machine of the present invention, it is not necessary to arrange a large number of nozzles and the duct piping structure can be simplified. Therefore, the dust collecting effect can be secured and the entire structure can be simplified. Produce the effect.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 2, the overall structure is such that a sanding mechanism 50 is provided above the work transfer mechanism 10 and these are connected and integrated by a housing 100. The material feeding belt 11 is provided so as to extend in the left-right direction in FIG.

<Sanding Mechanism> First, the sanding mechanism 50 will be described.

Inside the housing 100, a drive roll 51 is provided in the upper part, and a guide roll 52 and a sanding roll 53 are provided in the lower part, and an endless sanding belt 54 is stretched between them. . The drive roll 51 is driven by a motor (not shown), which causes the sanding belt 54 to travel in the direction of arrow B, which is the opposite direction of the traveling direction of the material feeding belt 11 (direction of arrow A in the figure) on the sanding surface of the work. As a result, the work is ground (polished) in the sanding region between the guide roll 52 and the sanding roll 53.

An air cushion type tread pad 55 is provided between the guide roll 52 and the sanding roll 53 which are arranged below the sanding mechanism 50. It is located on the back side of the sanding belt 54 and has a function of urging the sanding belt 54 downward (work side).

Holding rolls 56 are provided on both the left and right sides of the guide roll 52 and the sanding roll 53, and although not shown, their pivots are supported so as to be vertically movable, and are biased downward by a compression coil spring. ing.

As shown in FIG. 3, a dust suction duct 57 extends vertically and is arranged on the approaching side of the work in the sanding area (the right side of the sanding roll 53 in FIG. 2), and the upper portion thereof is led out upward from the housing 100. Is connected to the suction side of a dust collection fan (not shown). A guide duct 58 is connected to the lower end of the dust suction duct 57, and the tip of the guide duct 58 is inserted between the sanding roll 53 and the pressing roll 56 adjacent thereto, and opens toward the sanding roll 53 side in the front upper part thereof. ing. The proposed duct 58 has a width dimension wider than the lateral width of the sanding belt 54 and opens in a thin slit shape.

On the other hand, a cleaning head 59 is fixedly arranged on the work discharge side of the sanding area (that is, on the left side of the guide roll 52 in FIG. 2). This has a cylindrical shape extending in the width direction of the sanding belt 54, a work air outlet 60 is formed in the lower portion of the peripheral surface thereof, and a belt air outlet 61 is formed on the peripheral surface of the sanding belt 54 side. ing. The work exhaust port 60 has a slit shape whose opening width is slightly longer than the lateral width of the material feeding belt 11, and the belt exhaust port 61 has a tapered nozzle shape whose opening width is the sanding belt 54. It is set slightly longer than the width. The cleaning head 59 is connected to the discharge side of an air compressor (not shown) to supply pressurized air. As a result, the pressure air can be blown from the work discharge port 60 toward the sanding surface of the lower work at a substantially right angle, and the pressure air can be discharged from the belt discharge port 61 to the guide roll of the surface of the sanding belt 54. The upper part of 52 can be sprayed at a predetermined angle.

A dust collecting hopper 62, which opens toward a portion where the compressed air from the work air outlet 60 is blown, is fixedly arranged on the rear side of the cleaning head 59, and above the cleaning head 59, a dust collecting hopper 62 is provided. A dust collecting hopper 63 is fixedly arranged and opens toward a portion where the compressed air is blown from the air outlet 61. These dust collecting hoppers 62 and 63 merge at an upper portion not shown in the drawing, and this is connected to the suction side of a dust collecting fan device (not shown).

A rotary brush 64 and a rubber roll 65 are sequentially provided on the left side in FIG. 2, which is the discharge side of the work. The rotating brush 64 has a function of being driven by a motor (not shown) to remove chips adhering to the surface of the work, and the rubber roll 65 has an adhesive surface and is driven to rotate in contact with the surface of the work. It has a function of adhering the cutting chips on the work surface to the rubber roll 65 side to remove them.

An inspection door 66 is attached to the housing 100 so as to be openable and closable.

<Work Transfer Device> Next, the work transfer device 10 will be described. This is a structure in which a processing table 13 is vertically movable by an elevating device 14 on an upper part of a base 12 installed on the floor. Rolls 15 are provided at both ends of the processing table 13, and the material feeding belt 11 is stretched between the rolls 15 so as to come into contact with and move on the processing table 13.

The elevating device 14 is operated by turning on an operation switch (not shown) or by rotating the operation handle 16, which causes the processing table 13 to move up and down so that the feeding belt 11 and the sanding belt 54 The gap size can be set to a desired value.

In addition, as shown in FIG. 1, a large number of vent holes 17 are formed in the material feeding belt 11 so as to penetrate the front and back and be scattered over almost the entire area. By the way, in this embodiment, the width of the material feeding belt 11 is about 70 cm, and the diameter of the ventilation hole 17 is about 5 mm.

On the other hand, on the processing table 13, as shown in FIG. 1, a slit-shaped intake port 18 is formed below the cleaning head 59 at a position corresponding thereto. A suction chamber 19 composed of a vertical wall plate 13a, a horizontal wall plate 13b and a bottom wall plate 13c is formed in a portion of the processing table 13 below the intake port 18, and the suction chamber 19 is not shown via a duct 20. It is connected to the suction side of the dust collecting fan device.

Next, the operation of this embodiment will be described.

First, the elevating device 14 provided in the work transfer device 10 is operated to move the processing table 13 to a desired height. This height is determined in consideration of the thickness of the work and the necessary "cutting margin", and can be set while looking at a known gauge (not shown).

After that, the work conveying device 10 and the associated devices such as the dust collecting fan and the turbo blower device are activated, and the work to be ground is placed on the material feeding belt 11 and fed below the sanding mechanism 50. Then, the work is placed on the material feeding belt 11, enters the inside of the housing 100 through the work insertion opening, and reaches the sanding region of the sanding mechanism 50. Then, the surface of the work is rubbed by the sanding belt 54, so that the work is ground.

When such a grinding process is performed, a large amount of chips are generated around the sanding region. In particular, since the sanding belt 54 runs to the right side in FIG. 1 in the sanding area, the chips are blown from the portion right below the sanding roll 53 toward the right side and open at the upper right side of the sanding roll 53. The dust is efficiently sucked into the guide duct 58 of the dust duct 57. However, since the sanding belt 54 is rubbed on the surface of the work, the work is discharged in a state in which chips adhere to the surface of the work and the surface of the sanding belt 54.

However, in the present embodiment, the cleaning head 59 is provided on the work discharge side of the sanding region, and the pressure air is jetted from the work discharge port 60 toward the work's sanding surface. Therefore, as shown by the arrow in FIG. 1, the pressure air collides with the sanding surface of the work W and reflects off the chips adhering to the sanding surface, and most of them are behind the cleaning head 59. It is sucked into the hopper 62. Further, a part of the air ejected from the work air outlet 60 flows so as to surround the work W, wraps around the side of the work W, and escapes from the closure by the work W. Through the ventilation hole 17 of the material feeding belt 11. It is sucked into the suction chamber 19. Therefore, the chips adhering to the side surface of the work W are also removed from the work W by being multiplied by the air flow.

On the other hand, pressurized air is blown from the belt outlet 61 of the cleaning head 59 onto the surface of the sanding belt 54, where it is reflected and sucked into the dust collecting hopper 63. For this reason, the chips adhering to the surface of the sanding belt 54 are also peeled off by the flow of the compressed air, and are sucked into the dust collecting hopper 63 by being multiplied by the air flow.

Further, in the process of sanding, as shown in FIG. 1, cutting chips may adhere to the rear end portion of the work W in the shape of an eaves to form a deposit. It is removed as follows. That is, when the grinding of the work W is completed and the work W is separated from the sanding region, the rear end of the work W passes below the work air outlet 60 of the cleaning head 59. When the work W has passed through, the pressure air jetted downward from the work discharge port 60 goes straight on, passes through the ventilation hole 17 of the material feeding belt 11 and is sucked into the suction chamber 19. Therefore, the deposit of cutting chips is easily blown off by the strong straight air flow, and is sucked into the suction chamber 19 by being carried by the air flow and removed from the work W.

Even if some chips remain on the surface of the work W, they are removed by the rotating brush 64, and the adhesive rubber roll 65 rolls on the surface of the work W to remove the chips. Adheres here, so that it can be completely removed from the surface of the work W.

As described above, according to the present embodiment, the pressure air is blown from the work discharge port 60 of the cleaning head 59 onto the surface of the work W, so that the chips adhering to the sanding surface of the work W are efficiently removed. can do. Further, since the compressed air is blown from the belt outlet 61 of the cleaning head 59 toward the surface of the sanding belt 54, the chips adhering to the sanding belt 54 can also be removed.

Moreover, while the chips can be efficiently removed in this manner, the two air outlets 60 and 61 for the work and the belt are integrally formed on one cleaning head 59. Because of the structure, the structure is simpler than the conventional structure in which a large number of nozzles need to be arranged in the housing of the sanding mechanism. Further, since it suffices to supply the pressure air to one cleaning head 59, the pipeline structure for supplying the pressure air becomes simple, and the structure can be greatly simplified as a whole.

Further, particularly in the present embodiment, since the ventilation hole 17 is formed in the material feeding belt 11 and the intake port 18 is formed in the processing table 13, when the work W is directly below the cleaning head 59, The pressure air discharged from the work discharge port 60 can be flowed so as to wrap the work W, whereby the chips adhering to the side surface of the work W can be efficiently removed. .. Immediately after the rear end of the work W passes directly under the cleaning head 59, a strong airflow that flows directly behind the work W is generated. It is possible to blow away the chip deposits that are easily generated in the area, and this aspect also enables the efficiency of the chip removal work.

The present invention is not limited to the embodiments described above and shown in the drawings, and the following modifications are possible, for example.

(1) Although the cleaning head 59 is of a fixed type in the above embodiment, the present invention is not limited to this, and may be of a movable type. In this case, for example, it can be configured as shown in FIG. In this structure, both ends of the cleaning head 59 are slidably supported by a receiving member 81 attached to a frame 80 of a sanding mechanism. A drive motor 83 is fixed to the frame 80 via a mounting member 82, and a pin 84a is projectingly provided at an eccentric position of a disk 84 provided on the output shaft of the drive motor 83. The pin 84a and the end of the cleaning head 59 are A crank arm 85 is connected to the section.

According to this structure, when the drive motor 83 is driven, the disk 84 rotates in the direction of arrow D, and the cleaning head 59 reciprocates in the direction of arrow F in the figure via the crank arm 85. As a result, the flow of the pressure air blown against the sanding belt 54 shown in the figure and the work (not shown) is changed, so that the chips are easily peeled off and the capability of removing the chips is enhanced.

(2) In the above embodiment, the two dust collecting hoppers 62 and 63 are separately provided in the vicinity of the cleaning head 59, but this can be integrated into one. ..

(3) The sanding member is not limited to being arranged from the upper surface side of the work as in the above embodiment, but sanding may be performed by sandwiching both left and right sides of the work between the processing table and the sanding member. Of course, in this case, the cleaning head is arranged so as to blow pressurized air from the side of the workpiece onto the sanding surface.

(4) In the above-described embodiment, the processing table 13 is provided with the intake port 18, the ventilation hole 17 is formed in the material feeding belt 11, and the air is sucked through the ventilation hole 17 and the intake port 18. However, even if these are not necessarily provided, the intended purpose can be sufficiently achieved.

(5) In the above-described embodiment, the rotary brush 63 and the rubber roll 64 are provided in order on the rear side of the cleaning head 59, but these may be provided if necessary.

Besides, the present invention is not limited to the embodiments described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a main part of an embodiment of the present invention.

[Fig. 2] Overall front view

FIG. 3 is a plan view of a processing table.

FIG. 4 is a plan view showing an essential part of another embodiment of the present invention.

FIG. 5 is a partial vertical sectional view showing a conventional belt sander.

[Explanation of symbols]

 10 ... Work transfer mechanism 11 ... Material feeding belt 17 ... Vent hole 18 ... Intake port 50 ... Sanding mechanism 54 ... Sanding belt 59 ... Cleaning head 60 ... Work vent port 61 ... Belt vent port 62, 63 ... Dust collecting hopper

Claims (1)

[Scope of utility model registration request] 1. A work discharge mechanism comprising: a sanding mechanism that runs an endless sanding belt to polish and grind a work; and a work transfer mechanism that sends the work to a sanding region by the sanding mechanism. A cleaning head integrally provided with a work air outlet and a belt air outlet is provided, and the air is blown from the work air outlet to the sanding surface of the work discharged from the sanding area, and the sanding is performed. A sanding machine, comprising: a belt provided with a dust collecting hopper that blows pressured air from the belt discharge port and sucks air corresponding to a portion where the pressured air is blown.