JPH0354881Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention is a device that cuts plate-shaped materials such as plywood, fiberboard, and gypsum boats into fixed sizes, and is used to convey these plate-shaped materials. , and relates to a support device for a presser roll to be carried out.

``Prior Art'' Normally, when the above-mentioned seed plate-shaped plate is to be sawed while being transported, a driving force necessary to resist sawing resistance must be applied to the plate.

Therefore, conventionally, the plate sawing device 1 shown in FIG.
As shown in FIG. 3, driving forces that rotate in opposite directions are applied to the front and rear of the circular saw 3, which is rotatably supported on both sides of the plate-shaped body 2 in the conveyance direction, and this driving force is applied to the plate-shaped body 2 accurately. In order to transmit the information, a spring is attached to the upper presser roll 4, and the plate-shaped body 2 on the lower roll 5 is held and conveyed from above and below.

In addition, both shaft portions of this presser roll 4 are attached to a frame 6.
When mounting the presser roll 4 on the lower roll 5, there is a certain clearance t between the frame 6 and the bearings 7 on both shafts, since the mechanism is designed to slide up and down to elastically press the presser roll 4 against the lower roll 5. is set.

``Problems to be solved by the invention'' However, due to this clearance t, during driving, as shown in FIG.
As a result, the presser roll 4 slides on the lower roll 5 in the axial direction, and when the plate-like body 2 is conveyed, the plate-like body 2 slides along with the axial sliding of the presser roll 4. is cut while being offset and conveyed.

Therefore, the sawn edge of the plate-shaped body 2 after sawing does not necessarily have straightness, as shown by the solid line in FIG.
It is deviated in either direction, causing bending as shown by the one-dot chain line, waving, etc. as shown by the two-dot chain line, and the plate-shaped body 2 after sawing has lost its perpendicularity. ing. Further, the circular saw 3 on the side located in the direction of displacement of the plate-like body 2 suffers from burnt edges due to the pressing action of the plate-like body 2 during the deflection.

Furthermore, the presser roll 4 and the lower roll 5 are
Normally, it is formed in a cylindrical shape, so when a plate-like body 2 of equal thickness without uneven thickness is transported, sawed, and carried out, the load of the presser roll 4 on the surface of this plate-like body 2 is reduced. The load distribution becomes uniform, resists the sawing resistance that occurs when sawing the plate-shaped object 2, and prevents deviation conveyance, but the load distribution is uneven for the plate-shaped object 2 with uneven thickness. becomes.

Moreover, at this time, since the load on the presser roll 4 depends on the elastic force of the spring, the pressure cannot be adjusted sufficiently, and the plate-shaped body 2 cannot be pressed onto the lower roll 5 with a predetermined pressing force. Not only that, the impact load cannot be absorbed sufficiently, and furthermore, a couple is generated in the spring pressing the shaft of the presser roll 4 due to the reaction force due to the uneven thickness, and these forces synergistically This caused the plate-shaped body 2 to be conveyed in a deviated manner.

However, as shown in FIG. 8, in the plate-shaped body 2 which has a slightly thicker part near the center, the load of the presser roll 4 does not act uniformly on the entire surface of the plate-shaped body 2, making it unstable. Since the plate-shaped body 2 is sawed while still under a heavy load, the plate-shaped body 2 after being sawed may be transported in a deviated manner. Further, as shown in FIG. 9, when the presser roll 4 is inclined along one inclination due to the inclination of the surface of the plate-shaped body 2, the presser roll 4
The other end portion rises above the other surface of the plate-shaped body 2, and the load of the presser roll 4 on the entire surface of the plate-shaped body 2 becomes unbalanced, and the plate-shaped body 2 is conveyed in a deviated manner in the same manner as described above. result.

"Means for Solving the Problems" In view of the above, the present invention includes a presser roll and a lower roll for conveying and unloading the plate-like object before and after the circular saw.
A plurality of presser rolls are arranged above and below at arbitrary intervals, and piston rods of fluid cylinders are connected to bearings on both shafts of these presser rolls, and the presser rolls are pressed against the lower roll with a constant pressure. In addition to the bearing case, a biasing means is built into at least one of the bearings of the rolls, and the protrusion of the bearing is closely engaged with a step formed in the frame, and The axial cross section is slightly recessed in each interval compared to both ends and the center, which prevents the presser roll 4 from sliding in the axial direction and deflecting the plate-like body 2 during driving. This prevents transportation.

“Embodiment” An embodiment of the present invention will be described below with reference to the accompanying drawings. It should be noted that parts that have already been explained will be given the same numbers and will not be explained repeatedly.

At the front and back of the circular saw 2 of the plate-like object sawing device 1 in the conveyance direction, both shafts of the lower roll 5 are fixedly installed via bearings 8 at regular intervals on the frames 6 on both sides. It is rotatably supported. Directly above these lower rolls 5, an upper frame 6 is mounted on bearings 9 and 9' installed on both shafts of the presser roll 4.
A piston rod 11 of a fluid cylinder 10 installed at the bottom is connected to press the presser roll 4 onto the lower roll 5 with constant pressure at all times.

Bearings 9 and 9' installed on both shafts of this presser roll 4 are similar to the bearings 8 of the lower roll 5.
It has a bearing case 13 that houses the trochanter 12, and is rotatably supported by the frames 6 on both sides.At least one of the bearings 9 has a built-in biasing means 14 in addition to the bearing case 13. ing.

In the embodiment shown in FIG. 4, this biasing means 14 includes a coiled spring 15 annularly mounted on one shaft of the presser roll 4, or a plurality of coiled springs 15 arranged at arbitrary intervals in the annular part. The elastic force of the spring 15 causes the bearing case 1 to
3, the main body of the bearing 9 is urged inwardly or outwardly as in the illustrated example. When this biasing force acts on the lock nut 16 screwed onto the shaft end of the presser roll 4 and moves the presser roll 4 body synchronously in the axial direction, the protrusion 17' of the other bearing 9' is attached to the frame 6. It will closely engage the formed step 18'.

When the projection 17' of the other bearing 9' engages with the step 18' formed on the frame 6, the projection 17 of one bearing 9 also closely engages with the step 18. Clearance t is removed.

Further, FIG. 5 illustrates another embodiment in which the biasing means 14 is made of fluid pressure. By incorporating a fluid cylinder 19 and supplying fluid into the cylinder chamber, one of the bearings 9 main bodies is urged inward through the bearing case 13. Incidentally, it is optional that the projections 17, 17' of the bearings 9, 9' and the stepped portions 18, 18' formed on the frame 6 are on the inside as shown in the illustrated example.

Furthermore, the axial cross section of the presser roll 4 is
By forming the concave portions 20 at both ends and the central portion, a slight concave portion 2 is formed within the interval between each convex portion 20 at both ends and the central portion.
1.

Thus, the presser roll 4 is normally pressed downward by the fluid cylinder 10 with a desired pressure, and is pressed downwardly by the fluid cylinder 10 on both sides of the bearings 9, 9' and on the protrusions 17, 1.
7', both inner sides of the frame 6 and the stepped portions 18,1
8' rests on the lower roll 5 in close engagement. Under this condition, when the plate-like object 2 is carried in, the presser roll 4 is raised by the thickness thereof, the presser roll 4 and the lower roll 5 are driven synchronously from above and below, and the plate-like object 2 is conveyed in a pinched manner. .

At this time, since the axial cross section of the presser roll 4 has a slightly recessed portion 21 in the space between the ends and the center, the weight of the presser roll 4 and the pressing force by the fluid cylinder 10 are applied to the center. Convex part 2
0 is the branching point of the load of the convex portions 20 at both ends, and acts uniformly on the plate-shaped body 2. Therefore, even in the plate-shaped body 2 having uneven thickness, it is possible to enjoy an equal load on the left and right sides with the central convex portion 20 as a boundary.

Furthermore, during the conveyance of the plate-like body 2, the sliding movement of the presser roll 4 in the axial direction is eliminated with the removal of the clearance t, so that deviation of the plate-like body 2 during conveyance is not induced. The sawn edges on both sides of the plate-shaped body 2 by the circular saw 3 are solid as shown by the solid line in FIG.

"Effects" As described above, according to the device of the present invention, multiple pairs of presser rolls and lower rolls for conveying and unloading the plate-shaped object are arranged vertically at arbitrary intervals before and after the circular saw. A piston rod of a fluid cylinder is connected to the bearings on both shafts of the presser roll, and the presser roll is pressed against the lower roll with a constant pressure.
In addition to a bearing case, a biasing means is built into at least one of the bearings of the presser roll, and a protrusion of the bearing is closely engaged with a stepped portion formed on the frame. Since the axial cross section of the roll is slightly recessed in each interval compared to both ends and the center, not only can the pressing force on the presser roll be set arbitrarily, but also the sliding in the axial direction can be controlled. This eliminates the deviation of conveyance due to movement and uneven thickness of the plate pair, and eliminates the above-mentioned disadvantages such as sawing bends, non-squareness, saw burn, etc., and provides a good product.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the device of the present invention;
Fig. 2 is a front view of Fig. 1, Fig. 3 is an explanatory diagram of the plate-shaped body during sawing, Fig. 4 is a sectional view of the main part using a spring as the urging means, and Fig. 5 shows the urging means as a spring. 6 is a schematic side view of the plate sawing device, FIG. 7 is an explanatory diagram showing the conventional device, and FIGS. 8 to 9 are explanatory diagrams of the operation of the conventional device. It is. 1... Plate-shaped body sawing device, 2... Plate-shaped body, 3...
Circular saw, 4... Presser roll, 5... Lower roll, 6
... Frame, 9, 9' ... Bearing, 10 ... Fluid cylinder, 13 ... Bearing case, 14 ...
Biasing means, 15... Spring, 17, 17'...
...Protrusion, 18, 18'...Step, 19...Fluid cylinder, 20...Protrusion, 21...Recess.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A plurality of pairs of presser rolls and lower rolls for conveying and unloading the plate-shaped object are arranged vertically at arbitrary intervals before and after the circular saw, and both axes of these presser rolls A piston rod of a fluid cylinder is connected to the bearing of the lower part to press the presser roll against the lower roll with a constant pressure, and at least one of the bearings of the presser roll is provided with a biasing means in addition to the bearing case. By incorporating the bearing, the protrusion of the bearing is closely engaged with the step formed in the frame, and furthermore, the axial cross section of the presser roll is made smaller at each interval compared to both ends and the center. A device for sawing a plate-like object, characterized in that the inside is slightly recessed. 2. The plate-shaped object sawing device according to claim 1, wherein the urging device is a spring. 3. The plate sawing device according to claim 1, wherein the urging device is a fluid pressure device. 4. The plate-shaped object sawing device according to claim 1, wherein the stepped portion is engaged with the outside of the frame, and the protrusion formed on the outside of the bearing is closely engaged. 5. The plate-shaped object sawing device according to claim 1, wherein the stepped portion is formed inside the frame and is closely engaged with a protrusion formed inside the bearing.