JPH0716843B2 - Adsorption table - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction table that floats a work such as a plate material from the upper surface of the table and holds the work by suction.

[0002]

2. Description of the Related Art As a conventional technique, Japanese Patent Publication No. 4-3369.
There was one described in Japanese Patent Laid-Open No. 7. In FIG. 4, 1
Is a rectangular table, a base 3 is placed on the upper surface of the table main body 2, a hollow chamber 4 connected to a blower (not shown) is formed between the two, and a large number of suction ports are provided on the upper surface of the base 3. 5 is formed. The suction port 5 is formed as a stepped hole having a large diameter at the upper part, and a cylindrical support cylinder 6, a spike pin base 8 and a closing lid 10 are selectively removably fitted and fixed to each suction port 5. .

The supporting cylinder 6 is formed in a cylindrical shape, the lower end of which is fitted to the upper part of the suction port 5, and a urethane ring 7 is fixed to the upper end edge thereof. Support adsorption. Further, the spike pin base 8 is formed in a columnar shape, and a spike pin 9 is projectingly fixed to the center of the upper portion of the spike pin base 8 and the spike pin 9 is inserted into the lower surface of the work W supported by the support cylinder 6 so that the work is Prevent lateral displacement of W. Further, the closing lid 10 is formed in a disk shape and fitted over the unused suction port 5 to close the suction port 5. In addition, in FIG. 4, 11 is a cutter.

[0004]

In the above-mentioned conventional apparatus, the supporting cylinder 6 and the closing lid 10 are selected and attached to the suction port 5, so that the suction portion and the non-suction portion on the table 1 are shaped into the work W. There is an effect that it can be arbitrarily changed according to. However, in the above-mentioned conventional one, since the support cylinder 6 and the closing lid 10 which are separate bodies are selected and attached to the suction port 5, the operation becomes complicated, and it takes time to set the suction portion and the non-suction portion. In addition, if the ratio between the suction portion and the non-suction portion changes, the support cylinder 6 and the closing lid 10 change.
However, there was a shortcoming in that there was an excess and deficiency, and parts management became troublesome. It is an object of the present invention to obtain a novel suction table that solves the above drawbacks.

[0005]

In order to achieve the above object, the present invention is configured as follows. That is, concave portions having a rectangular shape in plan view are formed at a predetermined pitch on the upper surface of the table, a suction port is opened on one bottom surface in the longitudinal direction of each concave portion, and an annular fitting groove along the periphery of the bottom portion is formed at the bottom of each concave portion. A rectangular parallelepiped suction piece that is detachably and closely fitted to each of the recesses is formed on both upper and lower sides, and a communication hole that can communicate with the suction port is vertically penetrated to one side of the suction piece in the longitudinal direction. An annular work support portion that is formed and protrudes upward is provided on the upper peripheral edge of the suction piece, and the work support portion is provided so as to be fittable with the fitting groove.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a cross-sectional side view of essential parts showing an embodiment of the present invention, and FIG. 2 is a partial plan view. In FIGS. 1 and 2, reference numeral 15 denotes a table, and an upper surface board 18 is fixed to an upper surface of an iron table body 16 having a hollow chamber 17 therein.
A base 19 made of bakelite plate is fixed to the upper surface of the upper surface board 18. On the upper surface of the substrate 19, concave portions 20 having a rectangular shape in plan view are formed at a predetermined pitch. As shown in FIG. 1, a suction port 21 communicating with the hollow chamber 17 is provided in the right portion (one side in the longitudinal direction) of the bottom of each of the recesses 20 and has a rectangular shape in plan view along the entire circumference of the bottom portion. The fitting grooves 22 are formed respectively. In addition, an engaging protrusion 23 extending in the lateral direction is formed at the center of the bottom portion in the left-right direction.

Bakelite suction pieces 24 are detachably fitted into the respective recesses 20. The suction piece 24 is formed in a rectangular parallelepiped shape, and both the upper part and the lower part of the suction piece 24 are fitted in the respective recesses 20 in close contact with and in a removable manner. The suction piece 2
As shown in FIG. 3, 4 has a communication hole 25 which can communicate with the suction port 21 formed in the right portion (one side in the longitudinal direction) in the vertical direction, and the upper surface of the left portion is formed as a flat closed wall 26. To do.
Further, the work support portion 2 having a rectangular shape in plan view is provided on the peripheral edge on the upper surface side.
7 is formed so as to project upward, and an escape groove 28 and an engagement groove 29 are formed at the center of the upper and lower surfaces in the left-right direction. The work supporting portion 27 is formed so as to be fitted in the fitting groove 22 described above, and the escape groove 28 is formed in the engagement protrusion 23 described above.
Is formed to have a width and a depth for loose fitting, and the engaging groove 29 is formed.
Is formed to have a width and a depth that fit closely with the engaging projection 23.

In FIG. 1, reference numeral 30 is a positioning piece made of the same material as the suction piece 24, which is formed in a rectangular shape, and the lower portion of which is closely and removably fitted into a predetermined recess 20. The positioning piece 30 has engagement concave and convex portions 31 formed at a predetermined pitch in the longitudinal direction on the upper surface thereof. And
A ruler 32 is laterally projected on the engaging concave and convex portion 31 so as to be detachably engaged. The ruler 32 is formed of a rectangular plate material, and the left end portion (one end portion) is detachably engaged with the engaging concave and convex portion 31 from above, and the right end portion (the other end portion) is located rightward from the positioning piece 30. The workpiece W is positioned by bringing the end surface of the workpiece W into contact with the right end, that is, the protruding end of the ruler 32.

Next, the operation and effect of the above embodiment will be described. When the predetermined suction piece 24a is fitted upward into the concave portion 20 with the work support portion 27 facing upward, the suction piece 24a is moved to the suction piece 24a as shown in the left part of FIG.
The lower portion of the engaging groove 20 and the engaging groove 29 in the engaging projection 2
3 is fitted and the communication hole 25 matches the suction port 21. Further, when a predetermined suction piece 24b is fitted downward into the concave portion 20 with the work supporting portion 27 facing downward, the suction piece 24b is moved to the suction piece 24b as shown in the right part of FIG.
The lower part of b is fitted in the concave portion 20, the work supporting portion 27 is fitted in the fitting groove 22, and the escape groove 28 is fitted in the engaging projection 23.
The height of the suction piece 24b is lower than that of the suction piece 24a. Further, the closing wall 26 of the suction piece 24b faces the upper surface of the suction port 21 and closes the suction port 21.

In this state, when the work W is placed on each of the suction pieces 24a facing upward and the hollow chamber 17 of the table 15 is made to have a negative pressure, this negative pressure is passed through the suction port 21 to each suction piece 24a.
And the work W is suctioned and fixed.
As a result, the work W is supported by the suction pieces 24a in a state of being floated from the table 15, and as shown in FIG. 1, the end surface or the upper surface of the work W can be processed by the cutter 33 of the processing head. Further, since the suction piece 24b facing downward is lower than the suction piece 24a, the suction piece 24b is separated downward from the work W, and the cutter 33
No longer contact.

[0011]

As is apparent from the above description, according to the present invention, the suction piece supporting the work is inverted upward or downward to form the suction portion and the non-suction portion on the table, and the suction portion is directed downward. Since the inverted suction piece is made lower than the upward suction piece, there is an effect that the suction portion and the non-suction portion on the table can be arbitrarily and quickly changed according to the shape of the work. Play.

[Brief description of drawings]

FIG. 1 is a cross-sectional side view of essential parts showing an embodiment of the present invention.

FIG. 2 is a partial plan view showing an embodiment of the present invention.

FIG. 3 is a sectional side view of a suction piece showing an embodiment of the present invention.

FIG. 4 is a sectional side view of a main part showing a conventional example.

[Explanation of symbols]

 15 Table 16 Table Main Body 17 Hollow Chamber 18 Top Board 19 Base 20 Recess 21 Suction Port 22 Fitting Groove 23 Engagement Protrusion 24 Adsorption Piece 25 Communication Hole 26 Closure Wall 27 Work Support 28 Relief Groove 29 Engagement Groove 30 Positioning Piece 31 Engagement uneven part 32 Ruler 33 Cutter W Work

Claims (1)

[Claims] 1. A concave portion having a rectangular shape in plan view is formed at a predetermined pitch on an upper surface of a table, a suction port is opened at one bottom surface of each concave portion in a longitudinal direction, and an annular shape is formed at a bottom portion of each concave portion along a peripheral edge of the bottom portion. A rectangular parallelepiped suction piece, which has a fitting groove formed therein and which is detachably and closely fitted to each of the upper and lower portions, is provided, and a communication hole capable of communicating with the suction port is provided on one side in the longitudinal direction of the suction piece. And a ring-shaped work support portion protruding upward is provided on the upper peripheral edge of the suction piece,
A suction table, wherein the work supporting portion is provided so as to be capable of fitting with the fitting groove.