JP7161208B2 - Suction table of processing machine - Google Patents

Description

More specifically, the present invention relates to a suction table for a processing machine, and more particularly to a processing machine that uses a pressure difference (negative pressure) to attract a work plate to the table and cuts the work plate with a cutting blade. The present invention relates to a suction table of a processing machine that can be suitably prevented.

In a processing machine that fixes a work plate to a table and cuts the work plate with a cutting blade, a method of fixing the work plate by adsorbing it to the table using a fluid pressure difference (negative pressure) as a fixing means for the work plate. is widely used. FIG. 8 is an explanatory diagram showing a suction table of a conventional wood processing machine. A conventional suction table has a suction plate in which a plurality of suction holes for sucking the work plate are formed on the surface on which the work plate is placed, and an internal space communicating with the suction holes, and the internal space is a blower or the like. and a metal table that generates suction force by negative pressure when sucked by a suction pump. A plurality of suction holes on the suction plate are arranged in a lattice at predetermined intervals along, for example, the X-axis direction and the Y-axis direction.

When the cutting blade passes through the suction hole, a cutting mark (groove) is formed across the suction hole. As a result, air may flow into the suction table through the cut marks, degrading the suction performance of the suction table. Therefore, in the stage prior to processing the work plate, the cutting blade is positioned so that it barely touches the surface of the suction plate, and the surface of the suction plate is cut by the cutting blade while maintaining the cutting blade at the positioned height. (Self-cutting) prevents the cutting blade from passing through the suction hole as much as possible.

JP-A-2-303802 JP-A-3-219907

For example, a sheet material, such as plywood, which has a remarkably large surface area relative to its thickness, shrinks when the moisture inside evaporates and dries. In this case, the peripheral portion of the sheet material is warped upward due to the difference in dryness between the front side and the back side of the sheet material.

When a sheet material warped upward is fixed to a suction table, the warped portion is lifted from the suction table and the suction holes of the suction table are exposed to the atmosphere. As a result, air flows into the internal space of the table through the exposed suction holes, reducing the degree of vacuum in the internal space of the table, thereby weakening the suction force of the suction table.

In addition, in a continuous operation in which a plurality of sheet materials are processed at predetermined time intervals, if cutting chips generated during the previous processing remain on the suction table, a gap is generated between the work plate and the suction table (suction hole). . As a result, there is a problem that air flows into the internal space of the table through the gap, similarly weakening the adsorption force of the adsorption table.

Furthermore, when a cut piece is cut off from a plate to be processed during wood processing, the suction holes that have sucked the cut piece are exposed to the atmosphere. In that case, too, there is a problem that air flows into the internal space of the table through the exposed suction holes, similarly weakening the suction force of the suction table.

Accordingly, the present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide processing in which a work plate is attracted to a table by a pressure difference (negative pressure) and a cutting blade cuts the work plate. To provide a suction table for a processing machine capable of suitably preventing deterioration of the suction performance of the suction table in the machine.

A suction table of a processing machine according to the present invention for achieving the above object comprises a suction plate (10) having a plurality of through holes (10a) for sucking a plate to be processed, and a suction plate (10) joined to the suction plate (10). A suction table (100) for a processing machine, comprising a table (20) having an internal space communicating with the plurality of through holes (10a) and generating a suction force by suction of the internal space. A first feature is that a breathable fiber sheet material (11) is attached to the surface of the suction plate (10) to cover the plurality of through holes (10a).

In the above configuration, since the fiber sheet material (11) has air permeability, even if the suction holes (10a) are covered with the fiber sheet material (11), the sheet material to be processed passes through the fiber sheet material (11). can be aspirated. In this case, since the entire surface of the fiber sheet material (11) serves as an adsorption surface for the plate to be processed, the adsorption area for the plate to be processed increases from at most several tens of openings to the entire surface of the fiber sheet material (11). will do. As a result, it becomes possible to suck parts of the work plate that could not be sucked by the sucking holes (10a) conventionally. As a result, even if the plate to be processed is warped, it is gradually sucked by the suction plate (10) from the part with the least warp, and finally most of the warp is sucked by the suction plate (10). will be Therefore, even if the plate to be processed is warped, the plate to be processed can be attracted to the suction plate (10).

A second feature of the suction table of the processing machine according to the present invention is that the fiber sheet material (11) has inter-fiber gaps therein and is stretchable as a whole.

In the above configuration, when chips remain on the surface of the fiber sheet material (11), the chips are embedded in the gaps between the fibers of the fiber sheet material (11) by being absorbed by the plate to be processed. As a result, even if cutting chips generated during previous processing remain on the suction plate (10) during continuous operation, the cutting chips do not create a gap between the plate to be processed and the fiber sheet material (11). . As a result, the adsorption force of the adsorption table is less likely to decrease.

Similarly, when the cutting blade completely cuts the plate to be processed and cuts through the fiber sheet material (11), the sucked plate to be processed crushes the fiber sheet material (11) from above, and the fiber sheet material (11) ) stretches and deforms to smooth its own cut (groove). As a result, even when the cutting blade cuts through the fiber sheet material (11), no gap is generated between the plate to be processed and the fiber sheet material (11). As a result, the adsorption force of the adsorption table is less likely to decrease.

A third feature of the suction table of the processing machine according to the present invention is that said fiber sheet material (11) is made on the basis of non-woven fabric made of chemical fibers, natural fibers or a mixture thereof.

A fourth feature of the suction table of the processing machine according to the present invention is that said fibrous sheet material (11) is made on the basis of woven cloth made of chemical fibres, natural fibres, or a mixture thereof.

In the above configuration, the fiber sheet material (11) has air permeability and air inhalation resistance, has inter-fiber gaps inside, and has elasticity as a whole.

According to the suction table of the processing machine according to the present invention, it is preferable to reduce the suction performance of the suction table in the processing machine that causes the work plate to be attracted to the table by a pressure difference (negative pressure) and cuts the work plate with a cutting blade. It is possible to prevent

In particular, when the workpiece is warped, or when cutting chips generated during previous machining during continuous operation remain between the workpiece and the suction plate, or when the cutting blade passes through the suction hole. Even so, it is possible to preferably prevent the adsorption performance of the adsorption table from deteriorating.

FIG. 4 is an explanatory diagram showing a suction table of the wood processing machine according to one embodiment of the present invention; FIG. 4 is an explanatory diagram showing a suction plate of the wood processing machine according to one embodiment of the present invention; It is an explanatory view showing a table of a wood processing machine concerning one embodiment of the present invention. FIG. 5 is an explanatory diagram showing a suction table when a work plate has a warped portion; FIG. 5 is an explanatory view showing a process in which the warped portion of the work plate is sucked by the suction plate; FIG. 10 is an explanatory diagram showing a suction table when a cutting blade cuts a nonwoven fabric sheet material; FIG. 10 is an explanatory diagram showing a suction table when cutting waste remains on the nonwoven fabric sheet material; FIG. 10 is an explanatory diagram showing a suction table of a conventional wood processing machine;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an explanatory diagram showing a suction table 100 of a wood processing machine according to one embodiment of the present invention. FIG. 1(a) represents a front view, and FIG. 1(b) represents a right side view.

A suction table 100 of this wood processing machine communicates with a suction plate 10 having a plurality of suction holes (through holes) for sucking a plate (not shown) to be processed, and a plurality of suction holes 10a of the suction plate 10. A table 20 which has an internal space and generates an adsorption force when the internal space is sucked by a blower (not shown), and a table support section 30 which supports the table 20 displaceably in the longitudinal direction (X direction). , a table driving device 40 for displacing the table 20 with respect to the table supporting portion 30, a pedestal 50 for supporting the table supporting portion 30, a leveling adjusting portion 60 for adjusting the horizontality (leveling) of the table 20, a blower and a table. 20, a horizontal stopper portion 80 for restricting movement of the plate to be processed in the lateral direction (Y direction), and a linear solenoid 90 for pushing and displacing the plate to be processed in the Y direction. be done. Each configuration will be further described below.

A non-woven fabric sheet material 11 is attached to the surface of the suction plate 10 to cover the suction holes. The non-woven fabric sheet material 11 prevents the suction performance of the suction table 100 from deteriorating during the cutting process of the plate to be processed. Details of the suction plate 10 will be described later with reference to FIG. Further, the function of the nonwoven fabric sheet material 11 will be described later with reference to FIGS. 4 to 7. FIG.

The table 20 has an open-topped, bottomed, flattened hollow quadrangular prism structure, and a suction hose portion 70 is connected to the back side of the bottom surface thereof. Further, a slide mechanism mounting portion 26 for fixing a bracket 34 for mounting the slide mechanism 31 and a motor mounting portion 27 for fixing a bracket 43 for mounting the motor 41 are formed on the rear side of the bottom surface. . Details of the table 20 will be described later with reference to FIG.

The table support part 30 fixes a guide rail 31 and a slide mechanism 33 for sliding the table 20 in the X direction, a rack 32 meshing with a gear 42 attached to the tip of the motor 41, and the guide rail 31 and the rack 32. a base 35; The slide mechanism 33 is attached to the slide mechanism attachment portions 26 (six locations) of the table 20 via brackets 34 .

The table driving device 40 is composed of a motor 41 to which a gear 42 meshing with the rack 32 is attached. The motor 41 is attached to the motor attachment portion 27 of the table 20 via the bracket 43 . Accordingly, when the motor 41 rotates, the gear 42 meshes with the rack 32 and the motor 41 moves along the rack 32 . Since the motor 41 and the table 20 are integrated via the bracket 43 , the table 20 moves along the guide rails 31 as the motor 41 rotates.

A plurality of pedestals 50 are arranged along the Y direction and support the table support section 30 .

The leveling adjustment portion 60 is composed of a bolt 60a, a nut plate 60b to which a nut (female screw portion) is fixed, and a base plate 60c. The nut plate 60b receives the pedestal 50. As shown in FIG. Therefore, by rotating the bolt 60a, the projection amount of the bolt 60a from the nut plate 60b changes. Thereby, the leveling (horizontality) with respect to the installation surface of the table 20 can be adjusted.

The suction hose part 70 evacuates the internal space of the table 20 by two blowers (not shown) in this embodiment.

The lateral stopper portion 80 is attached to the stopper attachment portion 22a (FIG. 3) of the table 20. As shown in FIG. As shown in FIG. 1(b), in this embodiment, the lateral stopper portions 80 are attached to the table 20 at three locations.

The linear solenoid 90 has a predetermined stroke amount ST along the X direction.

FIG. 2 is an explanatory diagram showing the suction plate 10 of the wood processing machine according to one embodiment of the present invention. FIG. 2(a) shows a plan view of the suction plate 10, and FIG. 2(b) shows a cross section along line AA of FIG. 2(a). Although the nonwoven fabric sheet material 11 is separated from the suction plate 10 in FIG. 2B for convenience of explanation, the nonwoven fabric sheet material 11 is attached to the suction plate 10 in close contact therewith.

The suction plate 10 is made of medium density fiber board material (MDF material). A plurality of suction holes 10a communicating with the table 20 are formed at equal intervals dX along the X-axis direction and at equal intervals dY along the Y-axis direction. The suction holes 10a are covered with the nonwoven fabric sheet material 11 and are not exposed to the atmosphere (air).

The non-woven fabric sheet material 11 has air permeability, but has a large inhalation resistance to air, has inter-fiber gaps inside, and has elasticity as a whole. The non-woven fabric sheet material 11 is made of natural fibers such as cotton, wool or hemp, chemical fibers such as rayon, nylon, polyester or polypropylene, glass fibers, metals, ceramics, pulp, carbon fibers, etc., which are thermally, mechanically or chemically processed. It is formed into a sheet-like cloth by adhering or entangling it by a mechanical action. Also, commercially available punched carpet or needle-punched carpet can be used as the nonwoven fabric sheet material 11 .

The non-woven fabric sheet material 11 can be fixed to the suction plate 10 by using, for example, a thick double-sided tape 11b and Tucker needles 11a. In this embodiment, the outer periphery of the non-woven fabric sheet material 11 is fixed to the suction plate 10 with double-sided tape 11b and tacker needles 11a, and the inside of the non-woven fabric sheet material 11 is intermittently attached to the suction plate 10 with double-sided tape 11b extending in the Y direction. Fixed. In addition, it is also possible to fix to the suction plate 10 only with the Tucker needle 11a.

As shown in FIG. 2( a ), the nonwoven fabric sheet material 11 has air permeability and air inhalation resistance, so that the entire surface of the nonwoven fabric sheet material 11 is an adsorption surface for adsorbing a plate (not shown) to be processed. becomes. That is, conventionally, the openings of at most several tens (54 in this embodiment) of the suction holes 10a serve as suction surfaces for sucking the work plate. As a result, the entire surface of the non-woven fabric sheet material 11 is used as the adsorption surface for adsorbing the plate to be processed, thereby increasing the adsorption area. As a result, it becomes possible to suck the portion of the work plate that has not been sucked by the suction holes 10a. As a result, even if the work plate is warped, it can be stably fixed on the suction plate 10 . This will be described later with reference to FIGS. 4 and 5. FIG.

In addition, even if a part of the nonwoven fabric sheet material 11 is cut off by the cutting blade, the nonwoven fabric sheet material 11 is elastic, so that the nonwoven fabric sheet material 11 is crushed in the thickness direction by the plate to be processed. 11 stretches (along the lateral direction) along the surface of the suction plate 10 and is displaced to smooth the cut. As a result, air does not flow into the table 20 through the nonwoven fabric sheet material 11 . As a result, the suction force of the suction plate 10 is less likely to decrease. This will be described later with reference to FIG.

Furthermore, since the nonwoven fabric sheet material 11 is made of fibers, it has inter-fiber gaps. Therefore, even if there is cutting waste on the surface of the nonwoven fabric sheet material 11, the cutting waste is absorbed inside the nonwoven fabric sheet material 11 by being pushed from above by a plate to be processed (not shown). As a result, air does not flow into the table 20 through the nonwoven fabric sheet material 11 . As a result, the suction force of the suction plate 10 is less likely to decrease. This will be described later with reference to FIG. Even if the suction plate 10 has shavings, the shavings are similarly absorbed inside the non-woven fabric sheet material 11 .

FIG. 3 is an explanatory diagram showing the table 20 of the wood processing machine according to one embodiment of the present invention. In addition, FIG.3(b) is a front view of the table 20. As shown in FIG. FIG. 3(a) is a plan view of FIG. 3(b). FIG.3(c) is a bottom view of FIG.3(b).

The internal space of the table 20 is formed by a rectangular frame 21 joined to the suction plate 10, a quadrangular prism frame 22 forming a side portion, and a bottom plate 23 forming a bottom portion. Although not shown, the upper surface of the rectangular frame 21 is formed with a plurality of female screw portions for fastening the suction plate 10 with screws. Further, as shown in FIG. 3(c), the quadrangular prism frame 22 is formed with three stopper mounting portions 22a for mounting the lateral stopper portions 80 thereon.

Eighteen cylindrical portions 24 for receiving the suction plate 10 are formed on the front side of the bottom plate 23 in the figure. Of the 18 cylindrical portions 24, for example, two cylindrical portions 24 are formed with female screw portions 24a for fastening the suction plate 10 with screws.

Two openings 25 are formed in the bottom plate 23 for evacuating the internal space of the table 20 . Six slide mechanism mounting portions 26 are formed on the rear side of the bottom plate 23 in the figure. A motor mounting portion 27 is formed on the rear side of the bottom plate 23 in the figure.

Further, on the back side of the bottom plate 23 in the drawing, rib plates 28 are provided at a plurality of locations along the vertical direction (X direction), horizontal direction (Y direction), or oblique direction.

4 and 5 are explanatory diagrams showing the suction table 100 when fixing the work plate 500 having the warped portion 500a. For convenience of explanation, structures other than the suction plate 10 and the table 20 are not shown. FIG. 4 shows the initial state in which the suction plate 10 sucks the work plate 500, and FIG.

As shown in FIG. 4, when the plate 500 to be processed has a warped portion 500a, the non-adsorbed portion 11a of the nonwoven fabric sheet material 11 is exposed to the atmosphere (air). Therefore, air flows into the table 20 through the suction holes 10a located below the non-suction portions 11a.

However, since the non-woven fabric sheet material 11 has a large suction resistance, the amount of air drawn into the internal space of the table 20 is smaller than the amount of air drawn by the blower (not shown). In addition, since the entire surface of the non-woven fabric sheet material 11 serves as a suction surface, even if the plate 500 to be processed has a warped portion 500a, the suction is sufficient to fix the plate 500 to be processed to the suction plate 10. The suction table 100 of the present invention can maintain the force f1.

As shown in FIGS. 5( a ) to 5 ( d ), the warped portion 500 a is gradually sucked by the suction plate 10 through the non-woven fabric sheet material 11 from near the bottom as time elapses. As a result, the warped portion 500 a gradually falls horizontally and is attracted to the suction plate 10 , and finally the warped portion 500 a becomes almost horizontal and most of the warped portion 500 a is attracted to the suction plate 10 . As a result, the suction table 100 according to the present invention stably fixes the plate 500 to be processed to the suction plate 10 without forming a non-suction portion 11a (gap) between the plate 500 to be processed and the nonwoven fabric sheet material 11. be able to

In this way, since the entire surface of the non-woven fabric sheet material 11 serves as a suction surface, even if the plate 500 to be processed has a warped portion 500a, the plate 500 to be processed can be stably fixed to the suction plate 10. become.

FIG. 6 is an explanatory view showing the suction table 100 when the cutting blade 600 cuts the nonwoven fabric sheet material 11. As shown in FIG. FIG. 6(a) is a cross-sectional view of the main part of the cut suction table 100 when a portion of the surface of the nonwoven fabric sheet material 11 is cut. FIG. 6(b) is an enlarged view of the vicinity of the cut mark. FIG. 6(c) is an enlarged view of the vicinity of the smoothed cut mark.

As shown in FIG. 6B, when a portion of the surface of the nonwoven fabric sheet material 11 is cut off by the cutting blade 600, cut marks (grooves) are formed on the surface of the nonwoven fabric sheet material 11. As shown in FIG. In this case, since the plate 500 to be processed is attracted by the adsorption force f1, a crushing force f2 by the plate 500 to be processed acts on the nonwoven fabric sheet material 11 from above.

As a result, as shown in FIG. 6(c), the nonwoven fabric sheet material 11 is compressed between the plate 500 to be processed and the suction plate 10, and the crushing force f2 causes the nonwoven fabric sheet material 11 to expand and contract in the lateral direction. A stretching force f3 is generated. As a result, the nonwoven fabric sheet material 11 expands and contracts toward the cut marks (grooves), thereby smoothing (uniformizing) the cut marks (grooves). As a result, the suction table 100 according to the present invention can stably fix the plate 500 to be processed to the suction plate 10 without forming a gap between the plate 500 to be processed and the nonwoven fabric sheet material 11 . .

FIG. 7 is an explanatory view showing the suction table 100 when cutting waste 700 remains on the nonwoven fabric sheet material 11. As shown in FIG. FIG. 7(a) is a cross-sectional view of the main part of the suction table 100 before the blower is operated. FIG. 7B is a cross-sectional view of the main part of the suction table 100 during blower operation. FIG. 7(c) is a cross-sectional view of the main part of the suction table 100 when cutting chips are absorbed.

As shown in FIG. 7(a), when cutting chips 700 generated during the previous processing are present between the lower surface of the plate 500 to be processed and the nonwoven fabric sheet material 11 during continuous operation, a gap d is generated, and the gap d air flows into the table 20 through the nonwoven sheet material 11.

As shown in FIG. 7(b), when the blower (not shown) is operated, the work plate 500 is attracted by the attraction force f1. As a result, the crushing force f2 by the plate to be processed 500 acts on the chips 700 .

As a result, the shavings 700 are pushed into the nonwoven fabric sheet material 11 by the plate 500 to be processed, as shown in FIG. 7(c). Since the nonwoven fabric sheet material 11 is fibrous, the shavings 700 are absorbed between the fibers, and no gap is formed between the plate 500 to be processed and the nonwoven fabric sheet material 11 . As a result, air does not flow into the table 20 through the nonwoven fabric sheet material 11, and the adsorption force f1 of the table 20 does not decrease.

As described above, according to the suction table 100 of the wood processing machine according to the embodiment of the present invention, the suction holes 10a of the suction plate 10 are covered with the breathable fibrous non-woven fabric sheet material 11. Even if the processing plate 500 is warped, or if the cutting blade 600 cuts the nonwoven fabric sheet material 11, or if cutting chips 700 generated during previous processing remain on the nonwoven fabric sheet material 11 during continuous operation, It is possible to suitably prevent deterioration of adsorption performance.

Although the suction table 100 of the wood processing machine according to one embodiment of the present invention has been described above with reference to the drawings, the embodiment of the present invention is not limited to the above. That is, various modifications and changes can be made within the technical scope of the present invention. The fiber sheet material according to the present invention is not limited to the non-woven fabric sheet material 11, as long as it has air permeability and air inhalation resistance, has inter-fiber gaps inside, and has elasticity as a whole. The fiber sheet material according to the present invention includes, for example, natural fibers (plant fibers/animal fibers) such as cotton (cotton), linen (hemp), and silk (silk), or chemical fibers such as polyester, nylon, and acrylic, or It may be a fabric sheet made by weaving a mixture of natural fibers and chemical fibers.

Further, the present invention can be applied to a suction table of a metal processing machine or a resin processing machine for cutting an aluminum plate material or a resin plate, in addition to the wood processing machine.

The present invention can also be applied to a stationary suction table in which the table 20 cannot be displaced.

10 Suction plate (suction plate)
11 Non-woven sheet material (fiber sheet material)
20 Table 21 Rectangular frame 22 Square pole frame 22a Stopper mounting portion 23 Bottom plate 24 Cylindrical portion 24a Female screw portion 25 Opening 26 Slide mechanism mounting portion 27 Motor mounting portion 28 Rib plate 30 Table support portion 31 Guide rail 32 Rack 33 Slide mechanism 34 Bracket 35 Base 40 Table driving device 41 Motor 42 Gear 43 Bracket 50 Pedestal 60 Leveling adjustment portion 60a Bolt 60b Nut plate 60c Base plate 70 Suction hose portion 80 Horizontal stopper portion 90 Linear solenoid 100 Suction table of wood processing machine (Suction table of processing machine )
500 Workpiece plate 500a Warped portion 600 Cutting edge 700 Chip f1 Adsorption force f2 Crushing force f3 Stretching force

Claims (4)

a suction plate (10) having a plurality of through-holes (10a) for sucking the plate to be processed;
a table (20) which is bonded to the adsorption plate (10) and has an internal space communicating with the plurality of through holes (10a) and generates an adsorption force when the internal space is sucked; A suction table (100) for a wood processing machine that sucks a processing plate to the suction plate (10) and cuts it with a cutting blade ,
A suction table for a wood processing machine, wherein a breathable fiber sheet material (11) is attached to the surface of the suction plate (10) to cover the plurality of through holes (10a). In the suction table of the wood processing machine according to claim 1,
A suction table for a wood processing machine, wherein the fiber sheet material (11) has inter-fiber gaps therein and is stretchable as a whole. In the suction table of the wood processing machine according to claim 1 or 2,
A suction table for a wood processing machine, characterized in that said fiber sheet material (11) is made on the basis of a non-woven fabric made of chemical fibers, natural fibers or a mixture thereof. In the suction table of the wood processing machine according to claim 1 or 2,
A suction table for a wood processing machine, characterized in that said fiber sheet material (11) is made on the basis of a woven cloth made of chemical fibers, natural fibers or a mixture thereof.

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