JPH08216105A - Cutting-gluing-cold pressing apparatus for veneer connecting machine - Google Patents

Abstract

PURPOSE: To accelerate the connecting speed of a veneer connecting machine and to strictly enhance the connecting quality by wiping away the limit in the operating speed due to lateral rockable vibration upon mechanical gluing and the side movement of a cold pressing member or a fault such as deviation or removal of the connecting positions. CONSTITUTION: A cutting-gluing-cold pressing apparatus which comprises a gluing mechanism for injecting beadlike melted hot-melt resin from a space by a gluing nozzle 9 installed in the obliquely upper space of a veneer connecting unit, and a cold pressing mechanism of point contact melted hot-melt resin directly above the unit by press cooling bars 10a, 10b elevationally movably and operably provided at both sides of the movable blade 7a side of a cutting knife 7 is applied to a veneer connecting machine 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in the field of plywood manufacturing, and is mainly used for veneer laces, veneer slicers, etc. As a target, glue hot-melt resin in the form of beads is glued to the joint part of the end faces of the veneer cut into a certain width, and this is further cold-pressed to be joined to a horizontal strip product connected in a blind shape. The present invention relates to improvement of a cold-pressing device with a cutting paste in a single plate joining machine as described above.

[0002]

2. Description of the Related Art As a conventional cold-pressing device with cutting glue for this type of single-plate joining machine, for example, Japanese Patent No. 15026, which is an invention of the prior application, is disclosed.
No. 65 (Japanese Patent Publication No. 63-47601), Patent No. 1712
No. 165 (Japanese Examined Patent Publication No. 3-80081) and the like, a prior art of a cold-pressing device with a cutting paste for a single plate joining method, an anchoring joining device in a single plate joining machine, and the like is disclosed.

[0003]

However, in the above-mentioned conventional cold-pressing device with cutting glue in the above-mentioned veneer joining machine, the moving resin extruding block and the moving resin cooling block are installed laterally on the upper surface of the veneer joining part. Then, gluing the molten hot-melt resin to the veneer joint part and pressing and cooling the same are performed from the side to side, and the veneer with a certain width is joined to the lateral strip product connected in a comb shape. Therefore, in the moving operation of the moving resin extruding block and the moving resin cooling block from the side, the rolling speed is increased due to the rolling vibration phenomenon accompanying the side movement. It was not possible to efficiently perform the joining work and the production of horizontal strip products that are satisfactory in terms of quality, because the resin side coating and strict cooling work on the rigid single plate joint were restricted by the mechanical lateral movement operation. It is a thing.

Therefore, in order to eliminate the above-mentioned disadvantages of the conventional apparatus, the present invention eliminates the mechanical lateral movement operation at the time of gluing the molten hot-melt resin to the veneer joint portion and the pressure cooling thereof. A gluing mechanism that injects bead-shaped molten hot-melt resin from the space by a gluing nozzle that is installed in the space diagonally above the plate joint, and pressing that is openable and closable on both sides of the movable blade side of the cutting knife. Mechanical gluing and cold-pressing member side by applying a cutting glue cold pressure device consisting of a cold pressure mechanism of molten hot-melt resin spotted directly above the veneer joint part with a cooling bar to the veneer joining machine. The purpose was to speed up the welding speed and tighten the welding quality by eliminating the obstacles such as the operation speed limitation, the welding position shift, and the detachment due to the lateral vibration phenomenon caused by the lateral movement operation. It is a thing.

[0005]

In order to achieve the above object, the present invention is directed to cutting the trailing edge of the leading veneer and the leading edge of the trailing veneer at the veneer joint set at a predetermined position of the veneer transfer path. A horizontal strip product in which a veneer of a certain width is connected in a comb shape by cutting and gluing the molten hot-melt resin onto the joining line of the joining part where the end faces of the both veneers are joined and the cold pressure are applied alternately. In the single-plate joining machine configured to join to, the cold-pressing device with cutting glue was configured as follows.

A. A glued nozzle that injects molten hot melt resin, which is laid in a space diagonally above the veneer joint, in the form of beads from the space toward the joint line.

B. A beaded molten hot-melt resin glued on the joining line of the veneer joint was installed on both sides of a movable blade of a cutting knife vertically movable just above the veneer joint so as to be able to move up and down and open and close. Pressed cooling bar.

[0008]

The cold pressure device with cutting glue in the veneer joining machine of the present invention is a cutting knife which is set at a predetermined position of the veneer transfer path consisting of the carry-in and carry-out conveyors and which is normally installed at the connection point of the carry-in and carry-out conveyors. In the veneer joint set on the fixed blade of, the trailing edge cutting of the preceding veneer and the leading edge cutting of the following veneer and pasting of the molten hot melt resin to the joint part joining the end faces of both veneers. In a veneer bonding machine in which the cold pressure is alternately applied to bond a veneer of a certain width to a horizontal strip product connected in a comb shape, 180 to 210 is provided in a space diagonally above the veneer bonding part. Heated and melted at about ℃, 30-40kg
0.02 to 0.04 g per unit weight of molten hot-melt resin composed of polyamide resin or the like pressurized to about 1 / cm ²
Melted by arranging a plurality of glue nozzles in series along the joining line of the veneer joint, which is made into a bead-like molten hot-melt resin and is injected from the space toward the joining line of the veneer joint. A dot coating mechanism is formed on the joining line of the single-plate joining portion of the hot melt resin. In addition, a movable blade of a cutting knife that is vertically movably installed right above the single plate joint portion is provided with a water-cooled pressure cooling bar that is vertically cooled and can be opened and closed by cold water of about 2 to 7 ° C from both sides. Along with this, a cold-pressing mechanism for the molten hot-melt resin glued in the form of beads on the joining line of the veneer joining portion is formed. Therefore, the gluing operation of the molten hot melt resin by the gluing mechanism and the cold pressure mechanism in the device of the present invention and the cold pressure operation are performed from the gluing nozzle installed in the space diagonally above and toward the joining line of the single plate joining portion. The mechanical operation is performed by gluing operation from the space by the beaded molten hot-melt resin and cold pressure operation directly above the veneer joint part by the pressure cooling bars provided on both sides of the movable blade side of the cutting knife. Since the gluing operation from the space and the cold pressing operation from directly above can be performed at high speed and strictness without performing the gluing operation and the lateral movement operation of the cold pressing member, it seems to have been caused by the conventional device. It is possible to completely eliminate the obstacles such as the limitation of the operation speed due to the rolling vibration phenomenon accompanying the mechanical gluing and the lateral movement operation of the cold pressure member, the displacement of the joining point, the detachment, etc. That.

[0009]

1 and 2 are a side view and a plan view illustrating a series of steps when a cold-pressing device with a cutting paste according to the present invention is applied to a single-plate joining machine, in which 1 is a single-plate joining process. A machine, 2 is a carry-in conveyor, 3 is a carry-out conveyor, 4 is a ruler conveyor, 5 is a standard length clipper, and 6 is a loading conveyor.

The veneer joining machine 1 has an end veneer having defective parts such as thin and irregular edges on both end faces which are brought in by aligning the grain surface on one side by a carry-in conveyor 2 and a ruler conveyor 4. Or, a continuous veneer or the like having defective parts such as cracks or knot holes in the plate surface is cut into a finite width by a cutting knife in the veneer joining machine 1 arranged in the next stage, The veneer cut into a width, the veneer joining part set on the fixed blade of the cutting knife, the trailing edge cutting portion of the preceding veneer and the end face of the leading edge cutting part of the following veneer are joined. A beaded molten hot melt resin is injected from the space toward the joining line of both veneers, and the molten hot melt resin is applied in a dotted manner along the joining line of the veneer joining part by a nozzle with glue. In addition, press the spotted molten hot-melt resin applied on the joining line. The horizontal strip products connected to each other in a comb shape by being cooled by a cooling bar are joined to the horizontal strip products connected to each other in an interleaved manner by the carry-out conveyor 3 and the loading conveyor 6 next. A series of lateral stripping steps associated with the single plate joining machine 1 are formed so as to be cut to a predetermined standard size by the standard length clipper 5 and transferred to the subsequent loading step and the like.

Thus, the cold-pressing apparatus with cutting glue of the present invention applied to the veneer joining machine 1 in the series of lateral stripping steps is characterized by the fact that the edge knife veneer or continuous veneer with a cutting knife is sized. The specific mechanism of the present invention comprises the cutting abutting mechanism, the spotting and coating mechanism of the molten hot melt resin by the sizing nozzle, and the cold pressure mechanism of the spotting molten hot melt resin by the pressing cooling bar. As described above, the specific mechanism of the present invention, as disclosed in its embodiment in FIGS. 3 and 4, firstly, the dimensional cutting mechanism is connected to the connecting portion of the veneer transfer path composed of the carry-in conveyor 2 and the carry-out conveyor 3. Movable blade 7a erected vertically
With a cutting knife 7 composed of a fixed blade 7b and a fixed blade 7b, defects such as thin and thin edges, irregular edges, cracks, knot holes, etc., of the edge measuring veneer 8 etc. are cut and formed into a finite width intermediate product. The fixed edge 7 is formed at the trailing edge cutting point of the leading veneer 8a of the intermediate product having the above-mentioned width and the leading edge cutting point of the trailing veneer 8b.
It is configured as a dimensional cutting and joining mechanism in which chips are eliminated on the veneer joint portion set on b and the mutual end faces are joined together. The dot coating mechanism is the fixed blade 7b.
Molten hot-melt resin is beaded in the space diagonally above the veneer joint set above, and can be freely injected from the space toward the veneer joint line of the veneer joint, resin heating melting heater, resin pressure pump A plurality of controllable glued nozzles 9 connected to a series of devices such as a resin opening / closing valve are installed in series along the veneer joint line of the veneer joint part, and a bead-shaped molten hot melt resin point is provided. It is composed of a coating and coating mechanism. Next, the cold pressure mechanism is a water-cooling type pressure cooling bar 10 that can be raised and lowered and opened and closed on both sides of the cutting knife 7 that is vertically movably installed directly above the single plate joint portion on the movable blade 7a side.
a and 10b are provided corresponding to the arrangement of the glue nozzles 9, and the pressure cooling bars 10a and 10b are connected to a water cooler 11 such as a chilling unit so as to be able to circulate with a flexible hose or the like, and a fluid cylinder or the like. The actuating mechanism 12a includes a link mechanism 12b including a leaf spring and a coil spring, and a pressing opening / closing mechanism 12.
c, and separately from the vertical movement of the movable blade 7a,
By arranging both sides of the pressing cooling bars 10a, 10b on both sides of the movable blade 7a so that they can be raised and lowered and opened and closed,
The cold-pressing mechanism is configured to cold-press and solidify the spotted molten hot-melt resin applied on the veneer bonding line of the veneer bonding portion.

In the figure, 13 is a veneer detector that detects defective parts such as thick and thin edge veneers 8 and the like, irregular edges, cracks, knot holes and the like, and 14 is a movable blade 7a of the cutting knife 7 which is moved up and down. AC that moves
An intermittent operation mechanism equipped with a servo motor, an electromagnetic clutch brake, etc., 15 is an AC servo motor for opening and closing the carry-out conveyor 3 for separating chips, an intermittent operation mechanism equipped with an electromagnetic clutch brake, etc. This is a pressing and adhering mechanism when a reinforcing wet gum tape or the like is further adhered to the upper surface of the laterally stripped products which are transferred like a comb.

[0013]

As described in detail above, the present invention eliminates the mechanical lateral movement operation at the time of gluing molten hot-melt resin to the veneer joint part and pressing and cooling the veneer joint. Gluing mechanism by injecting beaded molten hot melt resin from the space by a gluing nozzle installed in the space diagonally above the part, and a pressure cooling bar that is openable and closable on both sides of the movable blade side of the cutting knife. Applying a cold-pressing device with a cutting glue consisting of a cold-pressing mechanism for molten hot-melt resin spotted directly above the veneer joining part to the veneer bonding machine, and mechanical gluing and Speeding up the joining speed and joining quality in the single plate joining machine by removing the obstacles such as the operation speed limitation due to the rolling vibration phenomenon accompanying the lateral movement operation of the cold pressure member, the displacement of the joining part, the detachment, etc. Can be stricter It is quite significant implementation advantages.

[Brief description of drawings]

FIG. 1 is a side view of a series of steps in which the present invention is applied to a single plate joining machine.

FIG. 2 is the same plan view as FIG.

FIG. 3 is a side view showing an example of a pasting mode in the cutting / pasting cold pressure device of the present invention.

FIG. 4 is a side view illustrating the same cold pressure mode as in FIG.

[Explanation of symbols]

 1 Single Plate Bonding Machine 2 Carry-in Conveyor 3 Carry-out Conveyor 7 Cutting Knife 7a Movable Blade 7b Fixed Blade 9 Glue Nozzle 10a, 10b Press Cooling Bar

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hideki Saeki Inventor Hideki Saeki 5-1-1 Nitta-cho, Takahama-shi, Aichi Hashimoto Electric Industry Co., Ltd.

Claims (1)

[Claims] 1. A veneer joining portion set at a predetermined position of a veneer transfer path, wherein a trailing edge cutting of a preceding veneer, a leading edge cutting of a succeeding veneer, and a joining portion joining end faces of both veneers. In a veneer joining machine that glues molten hot melt resin onto the joining line and cools it alternately to join a veneer with a narrow width to a horizontal strip product A gluing nozzle for injecting a molten hot melt resin erected in a space diagonally above the joining portion from the space toward the joining line in a bead shape, and a beaded molten hot melt resin glued on the joining line of the single plate joining portion A cutting glue in a veneer joining machine, characterized in that it comprises a pressing cooling bar installed vertically on both sides of a movable blade of a cutting knife erected vertically above the veneer joining part so as to be movable up and down. Cold pressure device.