JPS6116095Y2 - - Google Patents

Description

[Detailed explanation of the invention] Technical issues The present invention cuts out irregular parts of the front edge or rear edge of a veneer veneer (hereinafter referred to as veneer), as well as defective parts such as joint cracks, and adjusts them to an effective width. This invention relates to a veneer sorting device that transports cut irregular portions and defective portions (hereinafter referred to as scrap veneers) in a direction substantially perpendicular to the fibers of the veneers and discharges them from the conveyance surface during conveyance to the next step.

Prior Art Conventionally, as a veneer sorting device that discharges waste veneers during conveyance, an incoming conveyor and an outgoing conveyor that support both ends of the veneer in the fiber direction are operated on the same conveyance/support surface, as shown in Fig. 1. , and are connected at appropriate intervals, and a pressure conveyor that presses the central part of the veneer in the fiber direction downward from the conveyance surface in the same direction as the conveyance direction of the veneer is bridged between the incoming conveyor and the outgoing conveyor. There was a device that consisted of

However, when sorting thin veneers or wide veneers using the above-mentioned apparatus, there are the following disadvantages.

That is, when sorting wide veneers or thin veneers with flexible bonds between fibers, a single-stage pressurizing conveyor is used to form a curved portion downward at one location on the top surface of the veneer in a direction approximately perpendicular to the fibers. It is practically difficult to provide enough rigidity to pass through the gap between the inlet conveyor and the outlet conveyor by simply letting the veneer pass through the gap between the inlet conveyor and the outlet conveyor. It had the disadvantage that it was discharged outside.

Purpose The present invention was invented in order to solve the above-mentioned conventional drawbacks, and its purpose is to prevent the gap between the incoming member and the outgoing member, especially for wide veneers and thin veneers. It provides sufficient rigidity to pass through the gap provided, and reliably separates waste veneers that are smaller than the gap width, thereby saving labor in the process of sorting and removing waste veneers, and improving operating efficiency. It is an object of the present invention to provide a sorting device for veneers that can be obtained.

Embodiment Hereinafter, a veneer sorting device will be described according to an embodiment of the present invention.

FIG. 2 shows a plan view of the veneer sorting device according to the present invention, in which the veneer S is carried in as a carry-in member arranged in a direction substantially orthogonal to the fibers of the veneer S and transported in the direction of the arrow in the figure. The conveyors 1a and 1b abut on both lower surfaces of the veneer S in the fiber direction and support the veneer S. Then, carry-out conveyors 2a and 2b as carry-out members are substantially on the same plane as the carry-in conveyors 1a and 1b, and are driven to carry in the direction of the arrow with a gap E formed in the same direction for discharging the scrap veneer Sa from the conveyance surface A.
is connected.

The carry-out conveyors 2a and 2b transport the effective width veneer Sb among the veneers S brought in.
The input conveyor 1a, 1b and the output conveyor 2a, 2b have a pressurizing surface B below the conveyance surface A, and the input conveyor 1a, 1
On both sides of b, located on both ends of the veneer S in the fiber direction and approximately in the middle, the carrying-in conveyors 1a and 1b,
Pressure conveyors 3a, 3b, 3 as pressurizing means that are conveyed and driven in synchronization with the discharge conveyors 2a, 2b.
c are arranged at approximately equal intervals so as to bridge the carry-in conveyors 1a, 1b and the carry-out conveyors 2a, 2b.

Next, the operation of the veneer sorting apparatus in this embodiment will be explained with reference to FIGS. 3 to 5.

The veneer veneer S is cut by a cutting device (not shown) into a scrap veneer Sa consisting of irregular edges, etc. at the front and back, and an effective width veneer Sb.
b, the fibers are transported in a direction substantially perpendicular to the fibers. For example, waste veneer Sa or pressure conveyor 3
When placed on the pressure surface B of a, 3b, and 3c, the third
As shown in the figure, the pressure surface B of the pressure conveyors 3a, 3b, 3c is the conveyance path surface A of the carry-in conveyors 1a, 1b.
Since it is located lower, the pressure conveyor 3a
3b and 3c press down both end faces and the central part of the scrap veneer Sa in the fiber direction, and press at least 2
By forming at least three curved points W (in this embodiment, three points), rigidity is imparted in a direction approximately perpendicular to the fibers of the veneer, and the scrap veneer Sa is transferred to the conveyor 1a, 1.
It is held and conveyed by b.

However, as shown in Fig. 4, the width of the scrap veneer Sa in the direction approximately perpendicular to the fibers is less than the width l of the gap E.
At point a in the figure, the holding between the carry-in conveyor 1a and the pressure conveyors 3a and 3b is released.

Therefore, the addition of rigidity is prevented at location a, and the waste veneer at location a is pressed downward from the conveyance surface A by the pressure conveyors 3a and 3b, and the waste veneer is
The front edge Fa of Sa is curved downward as shown in FIG. 5, and is discharged to the outside of the conveying surface A through a gap E.

On the other hand, the effective width veneer Sb is also conveyed by the carrying-in conveyors 1a, 1b and the pressure conveyors 3a, 3b, 3c in the same way as above.
The fibers are sandwiched by the fibers to form three curved portions W, thereby imparting rigidity in a direction substantially orthogonal to the fibers.
When the effective width veneer Sb reaches the gap E, the front edge Fb of the effective width veneer Sb passes through the gap E because the width in the direction perpendicular to the fibers of the effective width veneer Sb is greater than the width of the gap E. The effective width of the veneer Sb is the loading conveyor 1a, 1b and the pressure conveyor 3a, 3b, 3c.
It is held between the two, providing continuous rigidity.

In other words, since the effective width veneer Sb continues to be given rigidity in the direction substantially perpendicular to its fibers, the front edge Fb does not sag between the gap E and is connected to the unloading conveyor 2a.
2b, and the unloading conveyor 2a/2
b and pressure conveyors 3a, 3b, and 3c and conveyed out.

Therefore, in this embodiment, three curved points W are formed on the veneer S on the inlet conveyors 1a, 1b and the pressure conveyors 3a, 3b, 3c, which are substantially perpendicular to the fibers, and provide rigidity, which is effective. The width veneer Sb can be transferred to the carry-out conveyors 2a, 2b without being discharged through the gap E, and the waste veneer Sa can be discharged through the gap E.

In particular, when sorting thin veneers with flexible bonding strength between fibers or long veneers in the direction of the fibers, which tend to bend due to their own weight, conventional equipment bends at one point in the center in the direction perpendicular to the fibers. In order to form the point W and impart rigidity, it was substantially difficult to impart sufficient rigidity to the veneer to allow it to pass through the gap E, but in this example, the veneer was pressurized. Conveyors 3a, 3b, and 3c are arranged in three rows, and curved parts W are formed at three locations perpendicular to the fibers of the veneer to provide extremely high rigidity, several to several tens of times higher than that of conventional equipment. In the case of an effective width veneer Sb having a width substantially perpendicular to the fibers having a width l or more of the gap E, the gap E
On the other hand, if the waste veneer Sa is less than the width l of the gap E, it is possible to discharge the waste veneer Sa to the outside of the conveying surface through the gap E, and the waste veneer Sa
It is possible to sort out Sa and the effective width single plate Sb.

In this embodiment, a pressure conveyor 3 is used as the pressure member.
A, 3b, and 3c were used, but it is also within the technical scope of the present invention to use a pressure member provided as a sliding member such as a diyuracon that slides on the top surface of the veneer.

Moreover, in this embodiment, pressure conveyors 3a, 3b, 3
c), the veneer S is pressed downward at three points in the direction orthogonal to its fibers, but depending on the flexibility of the veneer's fiber bonds or the width in the fiber direction, the pressurizing conveyor 3 or the carrying-in conveyor 1. The number of carry-out conveyors 2 can be increased as appropriate.

Furthermore, as shown in FIG. 6, three rows of loading members 1a
1c and two rows of pressure members 3a and 3b, that is, carry-in members 1a to 1c, or pressure members 3a and 3.
The present invention can also be implemented even if the pressure members 3a and 3b or the carry-in members 1a to 1c are arranged in a state that they are alternately inserted in one row more than b, thereby forming at least two or more curved points W. It is possible.

Furthermore, in this embodiment, three curved points W are formed, but in the present invention, for example, by removing the pressure conveyor 3c shown in FIG. 3 or the carry-in conveyor 1c shown in FIG. 6, two curved points W can be formed. Of course, even a configuration in which W is formed can be implemented.

As explained above, the present invention is a veneer sorting device having the configuration described in the claims for utility model registration. For long veneers that tend to warp due to their own weight, we curve them in at least two locations in a direction substantially perpendicular to the fibers, effectively sorting them into scrap veneers and effective width veneers to give them rigidity. This can help save labor in sorting work and improve operating efficiency.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the outline of a conventional veneer sorting device, Figs. 2 to 5 show an embodiment of the present invention, and Fig. 2 is a plan view of the veneer sorting device; 3
The figure is a cross-sectional view taken along line C-C in Figure 2, Figure 4 is a plan view showing the state of sorting waste veneer, Figure 5 is an explanatory view showing the state of discharge of waste veneer, and Figure 6 is a diagram showing the state of waste veneer discharge. FIG. 3 is a schematic front view showing a second embodiment. 1a and 1b in the diagram... Loading conveyor, 2a and 2b
...Export conveyor.

Claims (1)

[Scope of utility model registration request] It consists of a plurality of rows of carrying-in members that support the lower surface of the veneer veneer and conveying the veneer veneer in a direction substantially perpendicular to the fibers, and a carrying-out member that is connected to the carrying-in member with an appropriate gap formed therein; In a veneer veneer sorting device that discharges waste veneers having a width smaller than the gap width out of a conveying surface using a gap, the loading member has at least one row of loading members having a pressure surface below the conveying surface of the loading member. A sorting device characterized by being provided with pressing members located on both sides of the veneer veneer for pressing the veneer veneer downward at at least two locations in a direction perpendicular to the fibers of the veneer veneer.