JPH02255B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a veneer supply device for intermediate boards for plywood and the like.

When manufacturing plywood made by polymerizing multiple veneers, the veneers are fed out one by one from the veneer stack,
It is necessary to carry out a predetermined positioning for this before supplying it to the veneer polymerization area. For this reason, various veneer supply devices have been studied or proposed in the past, but it is not easy to accurately repeat the operations of feeding and positioning the veneer each time. For example, the application proposed by the applicant in 1987-
Even in what is disclosed in the specification of No. 157640 and the drawings, depending on the type of veneer, sometimes the veneer is not delivered or the veneer is incompletely positioned.

The purpose of the present invention is to provide a veneer supply mechanism that can accurately and repeatedly feed each veneer and position it at a predetermined position. Drop it onto the rotating hook with a drop cylinder and send it out.
The veneer is positioned by vertical positioning rollers inclined at a predetermined angle with respect to the veneer transport direction.

Furthermore, in order to ensure accurate continuity between veneer feeding and positioning, the present invention allows the positioning roller and the introduction roller for introducing the veneer to be fed out to cooperate with each other by their upper rollers, so that one of the upper rollers The other upper roller is configured to separate from the lower roller when it comes into contact with the lower roller.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

The illustrated veneer supply device is a supply device for intermediate boards for plywood, and a veneer take-out mechanism B on the veneer stacking section A for intermediate boards.
and a veneer positioning mechanism C following this.

The veneer take-out mechanism B includes an impact cylinder 2 whose base is fixed to the frame 1 and has a pin at the tip, and a knock-down cylinder 3 arranged in parallel with the impact cylinder 2.
It is composed of a circumferentially movable hook 4 having a U-shaped cross section. The circumferentially movable hook 4 is supported by the frame 1 at the upper part of the support shaft 4a, and is wound between opposing wheel parts 5a and 5b that are rotated by the driving force transmitted from the motor 101 via the transmission mechanism. It is supported and conveyed by a pair of rotating endless chains 6a and 6b. In the illustrated embodiment, a plurality of sets of veneer removal mechanisms are arranged in the length direction of the veneer, and two rotating hooks are attached to each mechanism, but the number depends on the size of the veneer and It is determined appropriately from the point of view of work efficiency.

The veneer positioning mechanism C includes upper and lower introduction rollers 10.
a, 10b, upper and lower positioning rollers 13a, 13b, and upper and lower delivery rollers 14a, 14b, each having a pair of transport rollers 11, 12 arranged at the front and rear thereof. An inclined guide frame 15 is arranged on the introduction roller 10a, 10b side, and the delivery roller 1
A gate link 16 is provided on the 4a and 14b sides. The positioning rollers 13a and 13b are installed to be inclined at an angle α with respect to the veneer transport direction, and a guide stopper 100 is provided on the side in the inclined direction.
have. An endless belt 100a is arranged on the guide stopper 100 so as to rotate at a speed faster than the veneer transport speed.

The upper positioning roller 13a and the upper introduction roller 10a are arms 17 that extend back and forth from a rotating shaft 17 arranged in a direction perpendicular to the veneer transport direction.
a and 17b, respectively, and is configured so that when one roller is brought into contact with the opposing lower roller, the other roller is always released due to the swinging movement of the rotating shaft 17 by the drive cylinder 18. has been done. Further, the upper introduction roller 10a and the arm 17b are connected via a triangular swing plate 19 whose base end is pivotally supported by the arm 17b. A spring winding shaft 19a is stretched between the swing plate 19 and the arm 17b, and limit switches 20a and 20b are arranged facing each other. Therefore, introduction plate 10
When two or more veneers are fed between a and 10b, the swing plate 19 swings to the right in FIG.
The lower introduction roller 10b, which is driven by receiving power from the drive source 22 via the drive source 22, is configured to stop rotating.

The upper delivery roller 14a is connected to the cylinder 2
3, it is configured to be swingable in the vertical direction via a rotation shaft 24, and when the gate link 16 swings downward from the first illustrated position, the gate link 16 is also configured to swing downward via a rotation shaft 25.

In addition, in the illustrated embodiment, the lower rollers 10a, 1
Although the upper rollers 10a and 14b are each constructed from a single roller, and the upper rollers 10a and 14b are constructed from a plurality of divided rollers, whether or not to use divided rollers, or how many divisions are to be made, is determined as necessary. . In the veneer supply device configured as described above, the pin of the impact cylinder 2 is pierced into the rear end of the veneer on the intermediate veneer stacking section A to lift it up, and the veneer is dropped onto the rotating hook 4. 3
The veneer is pushed to the right in Figure 1 by hitting it with
The leading end is guided by the guide frame 15 and inserted between the introduction rollers 10a and 10b, thereby feeding out the veneer. At this time, if a plurality of veneers are fed out, the swing plate 19 swings by a predetermined amount or more and stops driving the lower introduction roller 10b. When the tip of the veneer to be transported reaches the pair of transport rollers 11, a switch such as a phototube (not shown) activates the cylinder 18, swings the rotation shaft 17, lowers the upper positioning roller 13a, and rotates the hook 4. stop moving. The veneer is positioned by a pair of positioning rollers 13a and 13b and guided by an endless belt 100a that moves diagonally upward in FIG. be done. Then, the cylinder 23 is actuated by a predetermined signal from another process (not shown), the upper delivery roller 14a is lowered, and the gate link 16 is opened, so that the veneer is delivered. When the rear end of the veneer passes the pair of transport rollers 11, the switch such as the phototube reversely operates the cylinder 18 to lower the upper introduction roller 10a, restart the rotation of the hook 4, and repeat the above process. .

As described above, according to the veneer supply device according to the present invention, it is possible to accurately feed and position veneers, and also to perform accurate continuous operation, and to prevent the introduction of two or more veneers. It is possible.

[Brief explanation of drawings]

FIG. 1 is a side view of a main part of a veneer supply device according to the present invention, and FIG. 2 is a plan view thereof. A... Veneer stacking section, B... Veneer take-out mechanism, C...
Single plate positioning mechanism, 2...impact cylinder,
4...Hook, 10a, 10b...Introduction roller, 1
3a, 13b...positioning roller, 17a, 17
b... Arm, 19... Swing plate, 100... Guide stopper (guide plate), 100a... Endless belt.

Claims (1)

[Scope of Claims] 1. An impact cylinder having a pin at its tip, a knock-down cylinder that is provided in the impact cylinder and that knocks off the rear end of the veneer lifted by the pin of the impact cylinder, and an upper part of the veneer pile. and a hook that is provided at the rear end of the stacked veneer and moves in parallel in the veneer feeding direction by descending and rotates so as to rise and return at the front end of the stacked veneer; The veneers lifted from the veneer stacking section by the pins are dropped onto the hooks by the knock-down cylinder, and the veneers are pushed by the circular motion of the hooks, thereby feeding out the veneers one by one from the veneer stacking section. a veneer feeding mechanism; a guide plate disposed on either the left or right side in the veneer conveyance direction; an endless belt that slides on the guide plate at a speed faster than the veneer conveyance speed; and upper and lower positioning rollers arranged at a predetermined angle inclination toward the guide plate, and the veneers sent out from the veneer stacking section by the veneer delivery mechanism are moved to the guide plate by the upper and lower positioning rollers. A veneer supply device comprising: a veneer positioning mechanism that transports the veneer while moving the veneer obliquely toward the guide plate and positioning the veneer along the guide plate; 2. An impact cylinder having a pin at its tip; a knock-off cylinder provided in the impact cylinder for knocking down the rear end of the veneer lifted by the pin of the impact cylinder; a hook that descends at the rear end of the board and moves in parallel in the veneer feeding direction, and rises at the front end of the stacked veneer to return to its original position; By knocking down the veneer lifted from the top onto the hook with the knock-down cylinder and pushing it by the circular motion of the hook,
A veneer feeding mechanism that feeds out the veneers one by one from the veneer stacking section; Upper and lower introduction rollers that introduce the veneers sent out from the veneer stacking section, and upper and lower positioning rollers that are inclined at a predetermined angle with respect to the veneer conveyance direction. The upper introduction roller and the upper positioning roller are supported by an arm extending back and forth from a rotating shaft perpendicular to the veneer transport direction, and as the rotating shaft rotates, one of the upper rollers is in contact with the lower roller while the other upper roller is released from the lower roller, and the veneer introduced by the introduction roller is moved diagonally toward the guide plate placed on either the left or right side by the positioning roller. A veneer positioning mechanism for positioning a veneer by moving the veneer along the guide plate; 3. The veneer supply device according to claim 2, wherein the endless belt slides on the guide plate at a speed faster than the veneer conveyance speed. 4 The upper introduction roller is supported by the arm via a swinging plate, and when two or more veneers are introduced, the swinging plate swings by a predetermined amount or more and is configured to detect this. Additionally, a veneer supply device according to claim 2.