JPH06134680A - Dust sucking table - Google Patents

Abstract

PURPOSE:To prevent lowering of dust sucking force due to size difference and shape difference of a work on a dust collecting table. CONSTITUTION:In a plural number of suction chambers 12 partitioned and formed in a table main body, a dust sucking flow passage 15 having a suction port 16 conformed to a table surface 8 is respectively formed. Additionally, in each of the suction chambers 12, a touch ball 22 pushed down by weight of a work W and pushed up by a spring 20 and a damper 28 interlocking with this touch ball 22 are respectively charged, and when the touch ball 22 is pushed down by the work W, the damper 28 opens the dust sucking passage 15 and in the state where the touch ball 22 is not pushed down by the work W, the damper 28 closes the dust sucking flow passage 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collection table applied to polishing work of woodwork products.

[0002]

2. Description of the Related Art In a sanding work for manually sanding curved surfaces or corners of wood products such as furniture, a table having a large number of small holes is used on the entire surface of the table, and dust generated by the sanding work is removed from the table. I was sucking from the whole surface.

[0003]

In the above table, when polishing work for small products, air is unnecessarily sucked through the small holes even in the parts where the products are not placed, so dust is absorbed in the parts where dust is generated. There is a problem that the power is greatly reduced. SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to suppress the reduction of the dust suction force due to the dimensional difference and the shape difference of the works.

[0004]

In the dust suction table of the present invention, a large number of suction chambers arranged below the surface of the table are defined and formed in the table body on which the work is placed. The suction ports aligned with the table surface respectively form a dust suction passage having an opening at the upper end, and are pushed up by a spring in each of the suction chambers so that the vicinity of the upper end protrudes from the table surface to the lower side of the table surface. A touch ball that is installed so as to be able to retreat and return to the upper side and a turn ball that is installed rotatably in the dust suction passage, and closes and opens the dust passage in conjunction with the forward and backward movement of the touch ball. It has a configuration in which each damper is inserted.

[0005]

When a work is placed on the table body in which a large number of suction chambers each having a dust suction flow path are formed, the work is selected from among the touch balls loaded in the suction chambers. The pressed touch ball retreats below the table surface, and a damper installed in the dust suction passage and rotated in association with the forward and backward movement of the touch ball opens the dust suction passage, while depending on the workpiece. The touch ball, which cannot be pushed down, is pushed up by the spring and is held with its upper end area protruding from the table surface.
The dust suction passages of the suction chambers in which the touch balls that cannot be pushed down by the work are loaded are held in the closed state by the dampers.

[0006]

Since the present invention is configured as described above, only the dust collection passage in the suction chamber in which the touch ball pushed down by the work is loaded is selectively selected from the dust collection passage in each suction chamber. It is possible to hold the dust suction passages that are opened to the other and do not need to be opened in a closed state, and it is possible to automatically open and close each dust suction passage according to the dimensional difference and shape difference of the workpiece. Therefore, it is possible to secure the dust suction force for sucking the dust over each part of the table surface without reducing the dust suction force due to the dimensional difference and the shape difference of the work.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. A dust suction table T, which is used when polishing a work such as a woodwork product, is provided below the table body 1 on which the work is placed, and a dust collecting duct 2 standing upright behind the table body 1. The side surface of the dust collecting duct 2 is formed into a substantially U-shape by being connected to the upper end of the dust collecting duct 2 and extending to the front.

Inside the dust collecting duct 2, a fan 4 with a motor disposed at the upper end thereof, a filter 5 adjacent to the side of the fan 4 with a motor, and a filter 5 disposed below the filter 5. A bag filter 6 is inserted, and a suction port 7 whose lower edge is aligned with the table surface 8 of the table body 1 is opened at the lower end of the front wall plate of the dust collection duct 2.

At the front end of the blower duct 3, the clean air that has flowed into the dust collection duct 2 through the suction port 7 and has been filtered by the filter 5 and flowed into the blower duct 3 is blown toward the table surface 8 to blow the air curtain. An outlet 9 forming 10 is opened in a slit shape. Dust absorption table T
A circulation flow path is formed in which the air flow circulates from the air curtain 10 to the table body 1 to the dust collecting duct 2 to the air blowing duct 3.

At the front end of the table body 1, there is formed a suction surface 11 which is arranged below the table surface 8 to receive dust that has fallen from the front edge of the table surface 8, and at the bottom of the table body 1 there is a horizontal surface. A plurality of dust boxes 30 arranged in the direction are installed.

In the table body 1, a large number of suction chambers 12 each partitioned by a partition wall 13 and arranged vertically and horizontally under the table surface 8 are partitioned and formed over the entire table body 1, and suction control is performed in each suction chamber. Unit U is installed.

A pair of left and right partition plates 14 are erected in parallel in each suction chamber 12, and the center of each suction chamber 12 is surrounded by both partition plates 14 and partition walls 13 in front of and behind them. Dust suction channels 15 are formed respectively, and suction ports 16 aligned with the table surface 8 are formed at the upper ends of the dust suction channels 15.
Are opened respectively.

In each suction control unit U, the suction chamber 1
2, a support member 18 having a through hole formed in the center thereof is provided in each of the sensing portions 12a formed on both sides of the dust collection passage 15.
Are respectively installed on the support member 18, a cylindrical body portion 19a, a perforated disc-shaped bottom plate 19b connected to the lower end edge of the body portion 19a, and a central portion of the bottom plate 19b. Ball holders 19 each having a boss portion 19c that is protruded downward are installed so as to be movable up and down.

Each ball holder 19 is sandwiched between the support member 18 and the bottom plate 19b, and is constantly urged upward by a spring 20 fitted onto the boss 19c.

Ring-shaped ball receivers 21 are installed on the bottom plates 19b of the ball holders 19, respectively, and spherical balls are mounted on the ball receivers 21 in the ball holders 19 to detect the presence or absence of the work W. Touch ball 2
Two are fitted in each.

Each of the touch balls 22 is pushed up by the spring 20 so that the vicinity of the upper end of the touch ball 22 slightly projects from the table surface 8 so that the touch ball 22 can be retracted to the lower side of the table surface 8 and returned to the upper direction.

When the touch ball 22 is pushed down by the work W, the touch ball 22 retreats to a position where the upper end of the touch ball 22 is aligned with the table surface 8, and the touch ball 2
2 When the work W is removed from above, the touch ball 2
2 is moved to the rising end by the elastic force of the spring 20, and the vicinity of the upper end projects onto the table surface 8.

In each of the suction chambers 12, a support shaft 24, which is inserted through and supported by the partition plates 14 and the left and right partition walls 13, is horizontally rotatably mounted.

Crank discs 25 installed in both sensing portions 12a are fixed to the left and right portions of each support shaft 24, and the upper end of the peripheral edge of each crank disc 25 is a boss portion 19c of the ball holder 19. The lower ends of cranks 27, which are connected to each other via pins 26, are connected to each other.

When the touch ball 22 is pushed down against the spring 20 by the weight of the work W, the ball holder 19 retracts to the lower end together with the touch ball 22 and the crank 27 descends while tilting, and the crank disk. 25 and the support shaft 24 rotate 90 °, the damper 28 is changed from the horizontal posture to the vertical posture, the damper 28 opens the dust suction passage 15, and the dust adhering to the lower surface of the work W sucks the dust through the suction port 16. The dust box 30 is sucked into the passage 15
It is introduced inside or in the dust collection duct 2.

When the weight of the work W is removed from the touch ball 22 and the touch ball 22 is released, the ball holder 19 moves forward to the ascending end together with the touch ball 22 by the elastic force of the spring 20, and the crank 25 moves. Ascending while rising, the crank disk 27 and the support shaft 24 move 90 degrees.
The damper 28 is returned from the vertical posture to the horizontal posture, and the dust suction passage 15 is closed by the damper 28.

Next, the operation and effect of the embodiment having the above configuration will be described. In this example, a large number of suction chambers 12 partitioned by a partition wall 13 and arranged below the table surface 8 are formed in the table body 1 on which the work W is placed.
A suction port 16 aligned with the table surface 8 is formed in each of the suction chambers 12 to form a dust suction passage 15 having an opening at the upper end thereof. The touch ball 22 installed so as to be able to retreat below the table surface 8 and return upward while protruding from the table surface 8 and the touch ball 22 installed rotatably in the dust collection flow path 15 Dampers 28 for closing and opening the dust suction passage 15 are inserted in association with the forward and backward movement.

For this reason, the dust collection channel 15 in each suction chamber 12
Among these, only the dust suction passage 15 in the suction chamber 12 in which the touch ball 22 pushed down by the work W is loaded is selectively opened, and the other dust suction passages 15 which do not need to be opened are held in a closed state. Therefore, it is possible to automatically open and close the dust suction passages 15 according to the dimensional difference and the shape difference of the work.

Therefore, it is possible to secure the dust suction force for sucking the dust over each part of the table surface 8 without reducing the dust suction force due to the dimensional difference and the shape difference of the work W.

[Brief description of drawings]

FIG. 1 is a side view of a dust suction table showing an embodiment of the present invention.

FIG. 2 is a plan view of a table body.

FIG. 3 is a plan view of a suction chamber.

FIG. 4 is a sectional view taken along line X1-X1 of FIG.

5 is a sectional view taken along line X2-X2 of FIG.

FIG. 6 is a vertical cross-sectional view showing a state where the touch ball is pushed down.

[Explanation of symbols]

 1 Table Main Body 8 Table Surface 12 Suction Chamber 15 Dust Collection Channel 16 Blowout Port 20 Spring 22 Touch Ball 28 Damper T Dust Collection Table

Claims (1)

[Claims] 1. A large number of suction chambers arranged below the table surface are defined in the table body on which the work is placed, and the suction ports aligned with the table surface are formed at the upper end of each suction chamber. Each of the opened dust collection channels is formed, and it is possible to move backward and upward under the table surface while being pushed up by a spring in each of the suction chambers so that the vicinity of the upper end protrudes from the table surface. The installed touch ball and a damper that is rotatably installed in the dust suction flow passage and that closes and opens the dust suction flow passage in association with forward and backward movement of the touch ball. A dust collection table.