JPH02117546A - Unwinding device for wood veneer roll - Google Patents

Abstract

PURPOSE:To prevent difference in level between the unwinding position of a wood veneer and a position on a carry-out conveyor by a method wherein a pulley axle positioned to the upper part of a wood veneer roll is rockable toward the upper surface of the veneer wood roll, and along with rotation of a drive guide belt, the approximate half part on the carry-out side of the wood veneer roll is driven, and the tip part of the wood veneer is unwound in the direction of a pulley axle positioned on the carry-in side of the wood veneer roll. CONSTITUTION:An upper pulley axle 16 around which a drive guide belt 17 is stretched is brought into contact with the upper part of the outer periphery of a wood veneer roll 3 through the working of a fluid cylinder 18 for rocking and simultaneously a fastening member by means of which the wood veneer roll 3 is fastened is unfastened, and the drive guide belt 17 and a return conveyor 22 are synchronously driven through a continuously variable speed change gear 24. In this case, the approximate half part on the carry-out side, ranging from the upper part of the outer peripheral part of the roll to the lower part thereof, of the outer peripheral part of the wood veneer roll 3 has a plurality of spots located in the direction of an axis and surrounded with the respective drive guide belts 17, and rotation is exerted directly on the surrounded parts. The tip of the wood veneer 1 unwound along with the rotation is delivered toward the carry-in side of the wood veneer roll 3, and is fed through a return conveyor 22 located at a lower stage to a drier.

Description

Detailed Description of the Invention "Industrial Application Field" The present invention automatically transfers a veneer veneer roll cut by a veneer lace and wound onto a reel at a winding position to the next process. This invention relates to a rewinding device.

``Prior Art'' Conventionally, as shown in FIG. 5, a veneer veneer l cut by a veneer lace is placed on a winding reel 2 rotating in pressure contact with a side drive roll at a winding position, and a winding ball 3 of an appropriate diameter is used. The ball is wound up until it becomes , and after being temporarily stored in the rolled ball stock area 4, or transported as it is to the end of the rolled ball stock area 4 on the transfer rack 5, it is then transferred to the unwinding position 6.
After both shafts of the winding reel 2 are supported on the reel receiver 8 fixed to the reel support 7, the touch belt 9 is brought into contact with the upper outer periphery of the winding reel 3 to unwind it, and the next step is carried out. The veneer dryer 10 is transferred to a discharge conveyor 12 connected to a conveyor 11 of the veneer dryer 10.

That is, at the unwinding position 6 of the upper rolled ball stock area 4, the relatively thin veneer veneer 1 for the original sheet is normally unwound and transferred to the upper transport conveyor 11 of the veneer dryer 10, The empty rewinding reel 2 is returned from the upper rewinding position 6 to the reel stock area 14 via a return rack 13 extending diagonally downward. A medium veneer veneer 1 having a thickness almost twice that of the veneer veneer 1 is rewound and transferred to the lower conveyor 11, which has a slower conveyance speed than the upper conveyor 11G. The empty take-up reel 2 after rewinding is returned to the reel stock area 14 from the lower unwinding position 6 via a return rack 13 extending obliquely upward.

``Problems to be Solved by the Invention'' However, the veneer veneer 1 that is rewound from the rewound position 6 falls almost under its own weight until it is transferred onto the carry-out conveyor 12 and is stably conveyed. It becomes very unstable.

When this falls, for example, the relatively thin plywood veneer l on the upper stage has u! i The resin streaks that occur in the inner direction of the fibers and the dry cracks tend to tear, and in the lower row, even one original was cut from low-grade parts such as sapwood and core material. Since the veneer veneer 1 is rolled up, even if it is approximately twice as thick as the upper layer, it tends to tear easily in the fiber direction, as described above.

Furthermore, when winding up a narrow plywood veneer 1, it is easy to curl from the tip of the winding ball 3 and fall off due to its own weight, and it is easy to be transported. The return is interrupted.

However, if the plywood veneer 1 tears or breaks,
Alternatively, when the veneer veneer 1 is conveyed in an deviated manner, the operator is required to unwind the veneer veneer 1 or correct the conveyance state each time, which significantly impedes work efficiency.

On the other hand, when unwinding one plywood veneer, the outer periphery of the lower half of the winding ball 3 is surrounded by a chain with rollers, and the touch belt 7, pricking conveyor, etc. A method of stably feeding out the veneer veneer 1 by interposing a return conveyor has been attempted.

However, even in this conventional method, still
The difference in level between the unwinding position of the veneer veneer 1 and the unloading conveyor 12 has not been resolved, and the only drive for the winding bobbin 3 is the unwinding conveyor, and the chain with rollers simply surrounds the lower half of the bobbin and is not synchronized. Smooth feeding was prevented because it was not driven.

``Means for Solving the Problems'' In view of the above, the present invention supports rotor portions at both ends of a take-up reel with a wound ball wound thereon in a veneer veneer unwinding position of a reel support so as to freely rotate. Approximately half of the loading side of the rolled ball is in an open state, and approximately half of the unloading side is suspended in a tensioned state by multiple rows of drive guide bands. By making the pulley shaft located at the top of the winding ball swingable relative to the top surface of the winding ball, and driving approximately half of the unloading side of the winding ball as the drive guide band rotates, the tip of the veneer veneer is moved to the winding winding side. It feeds out in the axial direction of the pulley located at.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings, starting with the configuration. Note that parts that have already been described are given the same numbers and will not be described repeatedly.

A transfer rack 5 having a gentle downward slope toward a pair of left and right reel supports 7 installed at the end of the rolled ball stock area 4
is installed, and on this transfer rack 5 the both end roller portions of the winding wheel 2, on which the winding ball 3 is wound, are mounted. This transfer rack 5
A reel support 8 is installed inside the pair of reel supports 7 located at the terminal ends of the reel support 8 for freely supporting the trochanter portions at both ends. A rewinding position 6 is constructed by installing a reel presser 15 that is swingable relative to the reel holder 15. On the other hand, a return rack 13 for returning empty winding reels 2 from a position above the transfer rack 5 is connected to the upper part of the reel stock area 14.

A plurality of rows of drive guide bands 17 are endlessly suspended in the axial direction of the take-up reel 2 around a plurality of pulley shafts 16 arranged at arbitrary intervals in positions surrounding the reel receiver 8. The rolled ball 3 supported by the reel receiver 8 has approximately half of its inlet side open, and approximately half of its outer periphery on its unloading side is surrounded by the drive guide band 17.

Among these pulley shafts 16, the pulley shaft 16 located above the winding ball 3 can be freely moved toward and away from the top surface of the winding ball 3 by an electric motor, balance weight, fluid pressure, etc.
In this embodiment, for convenience, it is connected via a connecting member 20 to the piston rod 19 of the swinging fluid cylinder 18 which is pivotally supported by the reel support 7, and is swingable relative to the upper outer peripheral surface of the winding ball 3. There is. In order to keep the plurality of rows of drive guide bands 17 in a constant state of tension, a tension member such as a spring, a fluid pressure mechanism, a balance weight, etc. For convenience, one pulley shaft 16 is used as the balance weight 21. Further, a folding conveyor 22 is disposed immediately below the drive guide band 17, and its terminal end is connected to a linked conveyor 23 to continuously supply the veneer veneer 1 to a veneer dryer (not shown), or The material is supplied to a cutting device (not shown) and cut to a specified length. Note that a continuously variable transmission 24 is interposed between the folding conveyor 22 and the drive guide band 17 to synchronize the feeding speeds of both.

When the veneer veneer 1 at the tip of the rolled ball 3 is fed out in the direction opposite to the loading side of the rolled ball 3, the rotation of the rolled ball 3 is placed at the lower part of the rolled ball 3 surrounded by the drive guide band 17. A feeding separation mechanism is installed to prevent the tip of the veneer veneer 1 from rising along with the movement. In FIG. 2, this feed-out separation mechanism is a feed-out roll 25 with a needle, and this feed-out roll 25 is connected to a piston rod 27 of a fluid cylinder 26 that is pivotally supported on the reel support 7, and is connected to a substantially lower part of the wound ball 3. The drive guide belt 17 can be press-contacted between the plurality of rows of the drive guide bands 17 located at .

In addition, Fig. 3 shows this feeding separation mechanism with an appropriate ventilation device (
For example, a suction hood 28 is connected to a spool (not shown) and extends in the longitudinal direction of the winding ball 3 and in the conveying direction, and suctions and feeds the veneer veneer 1 toward the drive guide band 17 side.

Furthermore, in place of the suction hood 28, two air supply bodies, each opening of which is oriented toward the unwinding position of the veneer veneer 1, are installed at the side positions where the rolled bobbin 3 is in the open state, and compressed air is supplied. This is a means of preventing the free end of the veneer veneer 1 from rising as a result. In Figure 4,
An embodiment of this air supply body 29 is illustrated, and according to this, a chain wheel 3o fitted to the upper pulley shaft 16 constituting the drive guide band 17, and a chain wheel 3o that protrudes from the connection member 20. A chain wheel 32 is suspended between chain wheels 30 that are pivotally connected to an arm 31, and a nozzle 33, which swings as the chain wheel 30 rotates, is supported in the longitudinal direction of the winding ball 3. .

Incidentally, when the veneer veneer 1 is delivered from the drive guide band 17 to the folding conveyor, as shown in FIGS. 2 to 4,
In some cases, a plurality of folding guide members 34 consisting of a semicircular fixed guide, a chino conveyor, a belt conveyor, etc. are installed at arbitrary intervals in the axial direction in the vicinity of the pulley shaft 16 located on the loading side of the rolled ball 3. . Further, in the figure, 35 is interposed in the shaft portion.

This is a pushing body that pushes the take-up reel 2 to the drive guide band 17, and its rear part is attached to the tip of the piston rod 37 of the fluid cylinder 36, which is pivotally supported by the reel post 7, and the rear part is connected from the reel post 7. It is pivotally supported by a protruding bracket 38.

Next, the action will be explained.

A winding reel 2 with a winding ball 3 wound thereon is mounted on a reel support 7.
When loading the rolled balls 3 onto the reel receiver 8, the upper pulley shaft 16 constituting the drive guide band 17, which is kept under constant tension, is moved from the swinging fluid cylinder 18 so as not to interfere with the loading of the rolled balls 3. The actuation moves the piston rod 37 to the position shown by the two-dot chain line shown in FIG. evacuate upward.

Under this condition, the rolled ball 3 whose outer periphery has been temporarily secured with a tightening member such as a stapler, rope, tape, etc. and which has been temporarily stored in the rolled ball stock area 4 is mounted onto the reel receiver 8 from the transfer rack 5. At this time, the drive guide band 17 is always maintained in a tensioned state, and the actuation G of the fluid cylinder 36 causes it to extend with its piston rod 37, and the pushing body 35 is moved to the position shown by the two-dot chain line using the pivot point of the bracket 38 as a fulcrum. The winding ball 3 is pushed against the tension force by swinging, and the winding roll 2
The rotor portions at both ends of the reel are supported on the reel holder 8 so as to be freely rotatable, and then the reel holder 15 prevents the reel from shifting. In addition, after the reel presser 15 is operated, the pushing body 35 is retracted to the solid line position by an operation opposite to that described above.

Next, the upper pulley shaft 1 constituting the drive guide band 17
6 is brought into contact with the upper part of the outer periphery of the rolled ball 3 by the operation of the swinging fluid cylinder 18, and the tightening member tightening the rolled ball 3 is removed, and the drive guide band 17 and the folding conveyor are connected via the continuously variable transmission 24. 22 are rotated synchronously. Approximately half of the outer periphery of the rolled ball 3, at least on the unloading side from the upper part to the lower part, is surrounded by drive guide bands 17 at multiple locations in the axial direction, and rotation is directly from each of these surrounding parts. You will be passive.

Therefore, the winding ball 3 can enjoy driving from about half of its outer circumference using the reel receiver 8, which is the supporting part, as a fulcrum, and furthermore, the tip of the veneer veneer l, which is rewound as it rotates, is driven as it is. The rolled ball 3, which is in an open state on the guide band 17, is fed out toward the input side. When the unwound veneer veneer 1 reaches the pulley shaft 16 located on the loading side of the roll 3, it is folded back to the lower folding conveyor 22 following the curvature of this pulley, and from above the folding conveyor 22 to the linked conveyor 23. After that, the veneer veneer 1 is continuously supplied to a veneer dryer or to a cutting device where it is cut to a fixed length.

When this veneer veneer is fed out, for example, the curled state,
If the tip of the winding ball 3 tends to rise as the winding ball 3 rotates due to the resin content, water content, etc., the second
As shown in the figure, the feed roll 25 is projected from between each row of the drive guide band 17 for an arbitrary period of time until the veneer veneer 1 at the tip of the winding ball 3 is separated onto the drive guide band 17 and fed out.
This is to protrude and hold the needle portion of the feed roll 25.9 In addition, if the veneer veneer l breaks off during unwinding, a detector such as a limit switch or a phototube may be placed on the drive guide band 17 as appropriate. When this is detected, the feed roll 25 is made to protrude for an arbitrary period of time in the same manner as described above.

If this feeding roll 25 is replaced with the adsorption capacity of the adsorption hood 28 shown in FIG. 3, and also the interlayer separation using compressed air from the air supply body 29 shown in FIG. 4 is implemented, almost the same effect can be achieved. is obtained.

In addition, if the veneer veneer 1 that has been fed out has difficulty adapting to the curvature of the pulley, the veneer veneer 1 can be moved to the lower folding conveyor by a folding guide member 34 consisting of a semicircular fixed guide, a chain conveyor, a belt conveyor, etc. 22.

"Effects" As described above, according to the device of the present invention, at the veneer veneer unwinding position of the reel support, the trochanter portions at both ends of the take-up reel with the winding ball wound thereon are freely rotatably supported. Approximately half of the loading side of the roll is in an open state, and approximately half of the unloading side is suspended under tension by multiple rows of drive guide bands at arbitrary intervals in the axial direction of the take-up reel. Among the pulley shafts to be rolled, the pulley shaft located at the top of the rolled ball is made to be able to swing freely relative to the top surface of the rolled ball, and a folding conveyor is arranged immediately below the pulley shaft located on the rolled ball loading side. By setting the unwinding direction of the veneer veneer from the ball in the opposite direction to the unwinding direction of the conventional device, the difference in level from the unwinding position of the veneer veneer to the top of the carry-out conveyor 12 is eliminated. This eliminates the drawbacks of the device, that is, due to the difference in level, the material may tear at the tarnished or dry cracked portion, or may curl from its tip and be deviated and transported.

In addition, the roller chain used in some conventional devices only surrounds the lower half of the rolled ball, and the rotation of the rolled ball is carried out by a rewinding conveyor that engages only at its outer periphery. Therefore, when the veneer veneer is fed out, the fiber direction tends to be stretched or loosened in the lower half of the bobbin surrounded by the roller chain, but according to the device of the present invention, The winding ball can be driven synchronously with at least half of its outer circumference using the reel holder, which is the supporting part, as a fulcrum, and the tip of the veneer veneer that is unwound as it rotates is directly connected to the drive guide band. The rolled ball is fed out toward the input side with the top open, and smooth feeding can be expected.

Furthermore, if the tip part at the initial stage of unwinding tends to rise due to the rotation of the winding ball, depending on the curl state of the veneer veneer, resin content, water content, etc., the unwinding roll, suction hood, etc.
Separation and feeding can be facilitated by using an air supply body or the like.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing one embodiment of the present invention, FIG. 2 is a partially cutaway side view showing another embodiment of the first section, and FIG. FIG. 4 is a partially cutaway side view showing another embodiment of the embodiment shown in FIG. FIG. 5 is a side view showing a conventional device. ■...Plywood veneer, 6...Rewinding position, 8...Reel receiver, 17...Drive guide band, 25...Feeding roll, 29...Air supply body, 35... Pushing body 3... Rolling ball, 7... Reel position, 16... Pulley shaft, 22... Folding conveyor, 28... Suction hood, 34... Folding guide member,

Claims (1)

[Scope of Claims] 1. At the unwinding position of the veneer veneer of the reel support, the rotor portions at both ends of the take-up reel with the wound ball wound thereon are freely rotatably supported, and approximately half of this winding ball carrying-in side is supported. is in an open state, and approximately half of the unloading side is suspended in a tensioned state by multiple rows of drive guide bands, and among the pulley shafts that make up this drive guide band, the pulley shaft located above the bobbin is wound. A rewinding device for veneer veneer, which is capable of swinging relative to the upper surface of the reel, and is characterized in that a folding conveyor is disposed immediately below the pulley shaft located on the roll-in side. 2. At the unwinding position of the plywood veneer of the reel support, the trochanter portions at both ends of the take-up reel with rolled balls are supported so as to freely rotate, and approximately half of this winding ball loading side is in an open state, and the winding reel is placed in an open state and unloaded. Approximately half of the sides are suspended under tension by multiple rows of drive guide bands, and among the pulley shafts that make up this drive guide band, the pulley shaft located above the bobbin can swing freely relative to the top surface of the bobbin. In addition, a folding conveyor is disposed immediately below the pulley shaft located on the roll-in side via a folding guide member, and a needle conveyor is installed at a position substantially below the rolled rolls from between the plurality of rows of the drive guide band. A rewinding device for veneer veneer, characterized in that a feed-out roll with an attachment is installed in such a way that it can be freely pressed against the bottom surface of the winding ball. 3. At the unwinding position of the veneer veneer on the reel support, the trochanters at both ends of the take-up reel with rolled balls are supported so that they can rotate freely, and approximately half of this winding ball loading side is in an open state, and the winding reel is placed in an open state. Approximately half of the sides are suspended under tension by multiple rows of drive guide bands, and among the pulley shafts that make up this drive guide band, the pulley shaft located above the bobbin is swung against the top surface of the bobbin. In addition, a folding conveyor is disposed immediately below the pulley shaft located on the roll-in side via a folding guide member, and a folding conveyor is arranged at a position substantially below the rolled balls between the plurality of rows of the driving guide band. A rewinding device for veneer veneer, characterized by a suction hood installed on the lower surface of the reel. 4. At the unwinding position of the veneer veneer on the reel support, the rotor portions at both ends of the take-up reel with rolled balls are supported so that they can rotate freely, and approximately half of this winding ball loading side is in an open state, and the winding reel is placed in an open state. Approximately half of the sides are suspended under tension by multiple rows of drive guide bands, and among the pulley shafts that make up this drive guide band, the pulley shaft located above the bobbin can swing freely relative to the top surface of the bobbin. In addition, a folding conveyor is arranged immediately below the pulley shaft located on the roll-in side via a folding guide member, and on the other hand, its opening is located on the side where the rolled roll is opened. A rewinding device for veneer veneer, characterized in that an air supply body directed toward a board unwinding position is installed.