JPH045282Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention involves cutting the front and rear edges of a veneer veneer into scarves with contrasting slopes, and applying adhesive to the board surface to separate each layer. Laminated veneer lumber laminated in a staggered manner, so-called LVL (laminated veneer lumber) or LVB (laminated veneer board)
This device relates to a scarf processing device for veneer veneers, which is used to produce laminated veneer materials commonly known as veneer laminated materials.

(b) Prior art A conventional example of a scarf processing device that diagonally cuts the edge of one side of a thin woodblock such as a veneer veneer is disclosed in, for example, the woodblock cutting machine No. 1979-26794. It is equipped with a rotating drum in which a number of small holes for sucking air are lined up over a certain width on the peripheral wall, and an endless belt that presses a wooden board onto the outer periphery of the drum and rotates as the wooden board moves. A round cutter is installed on the side of the drum to trim the side edges of the wooden board that is being moved between the drum and the belt. The cutting part of the circular cutter moves toward the outside of the wooden board to cut the wooden board diagonally, and the cutter is placed at an appropriate angle on the outer circumference of the drum so that the wooden board after cutting is away from the round cutter. There is a wood board cutting machine.

(c) Problems to be solved by the invention The apparatus for scarfing thin wooden boards such as veneer veneers disclosed in the above-mentioned conventional example involves wrapping the edge of one side of the veneer to be processed around a drum. The material to be processed was conveyed in a direction perpendicular to the fiber direction while being clamped with a belt from above, and cut into a diagonal scarf using a round cutter with one end edge mounted diagonally in a vertical direction. Precise machining or simultaneous machining of the front and rear edges of the veneer is not possible, so each time it is reversed and re-machined in two steps, the whisker-like uncut edges that remain on the machining edges are allowed to occur. The quality and productivity of the veneer was low, and the material was often damaged, and the direction of conveyance was perpendicular to the fiber direction. In order to adjust in advance the edges that are caused to come in and out, it was necessary to trim the edges with a circular cutter each time before diagonal cutting, which led to problems such as a decrease in material yield. This idea was designed to eliminate things.

(d) Means for solving the problem The present invention solves the problems that the conventional apparatus described above cannot simultaneously process or precisely process the front and rear edges of the veneer to be processed, and that the conveyance direction is perpendicular to the fiber direction. Therefore, in order to fundamentally eliminate functional inconveniences such as having to trim the edges of the veneer in advance due to the incorrect angle of the veneer to be processed, a. To be transported intermittently in the direction by an intermittent transport conveyor equipped with a veneer detector.

b. A rotary cutting member for scarfing the front edge of the veneer to be processed is installed so as to be able to reciprocate diagonally upward from directly below the front edge processing location of the intermittent conveyor.

c The intermittent transport conveyor is located at a position corresponding to the length of the veneer to be processed in the fiber direction with respect to the front edge scarf processing rotary cutting member, and is reciprocatingly movable diagonally downward from directly above the rear edge processing location. A rotary cutting member for scarfing the front edge of the veneer to be processed is installed.

(d) A pressing mechanism and anvil member for pressing the edge of the veneer to be processed are separately installed between the rows of the intermittent conveyor in correspondence to each of the rotary cutting members for scarfing the front and rear edges.

The veneer to be processed, which is composed of This is a one-way scarf processing device.

(e) Effect The scarf processing of veneer or veneer using the device of the present invention is as shown in Fig. 2, which shows an example of the process. The front edge 2a and the rear edge 2b of the conveyor are intermittently conveyed by an intermittent conveyor such as a roller, belt, or chain installed in
The vicinity of a and 2b is pressed from above and below by a pressing mechanism and an anvil member, and a pair of rotary cutting members for scarf processing such as planers and grinders installed obliquely in the vicinity of the front and rear edges 2a and 2b, While pressing the anvil member against the front and rear edges 2a and 2b so that the front edge 2a faces downward and the rear edge 2b faces upward, the anvil member is cut into a slot.
The contrasting slopes 3a and 3b are precisely machined by simultaneous cutting. Furthermore, when precision machining by simultaneous cutting is completed, both the processed cutting member, the pressing mechanism, and the anvil member are restored to their normal positions, and the conveyance and loading of the processed veneer by the intermittent conveyor is restarted. This device is designed to repeatedly carry out simultaneous precision machining of the front and rear edges of the scarf by conveying, pressing, and cutting.

(F) Embodiment As shown in FIG. 1, an embodiment of the present invention apparatus is equipped with a veneer detector 4 consisting of a photoelectric switch, etc., so that the veneer 1 to be processed can be conveyed as it is in the direction of the rigid fibers. An intermittent conveyor 7 consisting of rollers, belts, chains, etc. is installed in series on the conveyor line and the rotation of a motor 6 is controlled intermittently by an intermittent drive device 5 such as an electromagnetic clutch brake. From directly below the front edge processing location of the conveyor 7, it can freely reciprocate diagonally upward.
A rotary cutting member 8 for scarfing the front edge of the veneer 1 to be processed is installed. Furthermore, the length of the veneer 1 to be processed in the fiber direction, that is, the creasing length, e.g.
A rotary cutting member for scarfing the trailing edge of the veneer to be processed 1 is placed at a position corresponding to a length of about 90 cm, and is reciprocably movable from just above the trailing edge processing location of the intermittent conveyor 7 to diagonally downward. 9 are installed to form a pair of front and rear rotating cutting members 8 and 9 for scarf processing. The pair of front and rear rotary cutting members 8, 9 for scarf processing have a reciprocating mechanism consisting of cutter heads 8a, 9a consisting of planers, grinders, etc., motors 8b, 9b, sliding bearings 8c, 9c, crank devices, and others. 8d, 9d, etc., so that it can reciprocate through an inclination angle of about 7 to 14 degrees. Next, between the rows of the intermittent conveyor 7, a fixing member 10a for pressing the edge of the veneer to be processed 1,
11a, movable members 10b, 11b, air cylinders 10c, 11c, etc.
0 and 11, and anvil members 12 and 13 made of soft synthetic resin plates are installed separately on the front and rear edge sides of the veneer 1 to be processed of the pressing mechanisms 10 and 11, and the veneer 1 to be processed as a whole is While the fibers are transported as they are by the intermittent conveyor 7 in the direction of the rigid fibers, the front and rear edges of the fibers are simultaneously and precisely cut into contrasting slopes by a pair of rotary cutting members 8 and 9 so as to leave no uncut parts. This is a one-way scarf processing device that is designed to carry out intermittently to subsequent processes.

It should be noted that the anvil members 12 and 13 are somewhat worn due to repeated cutting operations by the cutter heads 8a and 9a of the rotary cutting members 8 and 9, so for example, as shown in the figure, the anvil members 12 and 13 are slightly worn every few ten times. The screw is also fed to compensate for its wear.

(g) Effects of the invention As mentioned above, the device of the invention conveys the veneer to be processed as it is in the direction of the rigid fibers, while at the same time turning the front and rear edges of the veneer into symmetrical slopes, and precisely so as not to leave any uncut parts. Since this is a one-way scarf processing machine that performs cutting and then intermittently transports the material to subsequent processes, it is not possible to perform simultaneous processing and precision processing of the front and rear edges of the workpiece veneer, which was the case with conventional equipment. In addition, because the conveyance direction is orthogonal to the fiber direction, there are functional problems such as the fact that the edges of the veneer had to be trimmed in advance due to the incorrect angle of the veneer to be processed. This fundamentally eliminates the inconvenience, and when using the device of this invention, scarf processing can be performed with the veneer to be processed pressed against the anvil member, so there is no whisker-like uncut residue on the processed edges. The one-way intermittent conveyance process with a simple structure allows for efficient scarfing without leaving any residue, and the intermittent conveyor also performs all the restraining operations on the veneer to be processed during the process, so the front edge There is no risk of damaging the material of the veneer to be processed, which is the case when the edge hits a stopper, etc., so high-speed work can be done safely, and there is no unnecessary trimming required with conventional equipment. Since the work and equipment for that purpose were also eliminated, quality, material yield, and economic efficiency were significantly improved, making it a device with remarkable implementation effects.

[Brief explanation of the drawing]

The figure shows an example of implementation of the present invention, and
FIG. 1 is a side view of the device, and FIG. 2 is a perspective view of an example of its processing. 1... Single plate to be processed, 4... Single plate detector, 7...
Intermittent conveyor, 8, 9...rotating cutting member, 1
0, 11... Pressing mechanism, 12, 13... Anvil member.

Claims (1)

[Scope of utility model registration request] An intermittent conveyor equipped with a veneer detector that intermittently conveys the veneer to be processed in the direction of the fibers, and the veneer is installed so as to be reciprocally movable diagonally upward from directly below the front edge processing location of the intermittent conveyor. A rotary cutting member for scarfing the front edge of a processed veneer, and a rear edge processing of the intermittent conveyor at a position corresponding to the length of the veneer to be processed in the fiber direction with respect to the rotary cutting member for scarfing the front edge. The rotary cutting member for scarfing the rear edge of the workpiece veneer, which is reciprocally movable from directly above the location diagonally downward, and the rotary cutting member for scarfing the front and rear edges of the workpiece veneer, respectively. A veneer veneer scarf processing apparatus characterized by comprising a pressing mechanism for compressing the edge of the veneer to be processed and an anvil member installed separately between rows of conveyors.