JPS6287301A - Anchoring joining method in veneer splicing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention ((a) Industrial Application Field The present invention is used in the field of plywood manufacturing, and is particularly applicable to veneer laces, veneer veneers cut in a strip shape by a veneer slicer, etc. [Small l] cut during the measurement period] Apply molten hot-melt resin to the top and end surfaces of the joints of the veneers in a T-shaped cross section and anchor them to form a series of joined veneers in a sash shape. The present invention relates to an anchor joining method using a veneer joining machine.

([]) PRIOR ART PRIOR TECHNOLOGY 1 This elongation rate "1" The IJ method for joining veneers is, for example, the earlier application 1?r Kosho 5)7-13/'124)"
3. Cutting and joining the veneer "J = fffi etc. As disclosed, [Small Nominally, the middle part (the part was cut to 77-rl on the right by naturally dividing it by 111 just below the extending and retracting movements of the cutting blade for front cutting and the cutting blade for rear cutting) A1 effect veneer is sequentially brought into contact with the end face of phase N at each bright cutting point by extending and operating the cutting blade for front cutting, and at the same time in the bright cutting point C'♂1t). Hola 1 ~ Mel 1 ~ Glue agent such as resin 〒lJI: Apply glue thread with resin injector 'f37'
J gold crystallizes and forms a continuous blind-shaped joint 11k.
1161 Joining - Is there such a thing as using the F method? The resin is coated and solidified in a 2W film on the top surface and end surface of the joint, respectively. Therefore, the joints on the side where the small melt resin is applied tend to bend easily, and the joints are easy to break, so it is limited to joining relatively thin veneers, and it is difficult to join thick veneers (stronger stone Therefore, it was completely unsuitable.

(C) Problems to be Solved by the Invention The present invention solves the problem only on the upper surface of the joint according to the prior art.
Strong stone resistance by coating and solidifying film-like melt resin
In order to compensate for this, the top and end surfaces of the joint are coated with Bottmel 1~resin cross section (1), and the cross section is T-shaped hot melt. Easy to handle on the side (Hard to bend, i.e. rear stage) - Easy to handle during handling at the culm (This is a strong bonded veneer product that will not break.) , that's what I tried to do.

(G) Means for Solving the Problem I) The anchor joining method of the present invention can be summarized as follows. The moving resin extrusion -f moves in 14 directions so as to move backward after moving backwards [-1 ivy and the moving resin extrusion J]
The molten hollow extruded in a spot shape by the -1 unit] and the movable resin cooling block which is designed to press and cool the resin from above. The first step is to move the leading edge of the trailing veneer after edge cutting to a position slightly rearward of the trailing edge of the leading veneer in the standby position.

b) Extrude and inject melted resin into the gap between the front edge of the following veneer that has been moved to the slightly rearward position and the rear edge of the preceding veneer that is in the standby position by extruding it into a spora 1 shape. The second step.

C) The small melted melt resin injected into the gap between the leading edge of the succeeding veneer and the trailing edge of the preceding veneer is crushed while being slightly protruded from the upper surface by moving the succeeding veneer to a slightly forward position. Third step.

d) A fourth culm in which the molten hot-melt resin that has been crushed and slightly protruding from the upper surface is pushed from above and cooled and anchored in a T-shaped cross section.

This is an anchor welding method in a medium plate welding machine which has the following structure: 1 and 2.

(49 Effects) To explain in detail the effects of the first to fourth steps of the present invention, in the first step, the leading edge of the succeeding veneer after cutting the leading edge is cut after the previous joining operation has been completed. At a position slightly behind the rear edge of the leading middle plate that is already in the standby position, for example, 0.5 to 1 m.
In the second step, the leading edge of the succeeding veneer is Spray the resin into the molten hot melt 1 into the gap between the trailing edge of the preceding veneer.
・It works by extruding and injecting at intervals, and in the third step, the molten hot null 1 to resin injected into the gap between the leading edge of the succeeding veneer and the trailing edge of the preceding veneer. , to a slightly forward position of the succeeding veneer, for example, from 1 to 5.
By re-moving to the front position of about m, the upper surface -
〇 − Melting hot null 1 ~ Resin protruding! 7: It acts to make the end faces come into close contact by squeezing the i slightly, and then in the 4th king, the I protrudes somewhat on the upper surface.
! The molten hot-melt resin that had been crushed was then cooled by pressing 1.11. This acts to form a hot null l-resin.

Example Embodiments of the present invention are described in the earlier application, JP-A-55-140509Q.
(See the attached drawing for details regarding an improved veneer cutting device.) First, as shown in Fig. 1, the cutting blades 1a and lb are used for the rear cutting operation of the preceding veneer 6 to cut the rear cutting blade 1b. is fed out downward and intersects with the receiving blade surface 2b located above the double-sided receiving blade 2 to close the conveyance path as it is. A gap is formed between the receiving blade 2 and the receiving blade surface 2a located below, allowing the following intermediate plate 3 to pass freely. Furthermore, since the carry-in conveyor 4 is also configured to move up and down together with the cutting blades 1a and 1b, the defective parts near the leading edge of the succeeding veneer 3 newly carried in by the carry-in conveyor 4 are It protrudes into the gap between the receiving blade surface 2a located below the receiving blade 2 and the cutting blade 1a for front cutting. Next, as shown in Fig. 2, the defective part near the front edge protruding into the gap between the receiving blade surface 2a located below the double-sided receiving blade 2 and the cutting blade 1a for front cutting is Synchronizing with the timing when the cutting blade 1a arrives directly above the cutting blade 1a, the cutting blade 1a for front cutting, the cutting blade 1a for trailing cutting, and the carry-in conveyor 4 simultaneously pay out upward, and perform a leading edge cutting operation in which the cutting blade 1a is fed in and raised. Therefore, the defective portion is automatically cut by the cutting blade 1a for front cutting and becomes chips 5a which fall directly below and are separated.

Therefore, during the cutting operation of the cutting blades 1a and lb, the cutting blade 1a for front cutting is extended upward and is rested on two sides.

At the same time, it intersects with the receiving blade surface 2a located below the blade 2 to close its delivery path, and at the same time, the upper part 8 is positioned above the cutting blade 1b for post-cutting which has been fed into one side and the double-sided receiving blade 2. The following veneer 3 can freely pass between W[1! A gap will be formed. At this time, the carrying-in conveyor 4 and the delivery member 4a provided at the tip of the carrying-in conveyor 4 are also cut together with the cutting blades 1a and Ib in front of the succeeding veneer 3 which has finished cutting the leading edge. the edges,
The contour line of the trailing edge of the leading middle plate 6 on the receiving blade surface 2b-1 located at the double-sided receiving blade 2, which is already in the standby position after the previous joining operation has been completed. Stop. Next, as shown in FIG. 3, the succeeding intermediate plate 3 of 740 is transported slightly by a reciprocating mechanism 11 such as an air cylinder mounted on the transport conveyor 4, or a cam mechanism, etc. in place of this. It is operated to move back to the rear position, usually by about 0.5 to INn, and a gap C is formed between the rear edge of the leading middle plate 6 in the standby position and the front edge of the trailing single plate 3. Ru.

Next, as shown in Fig. 4, the movable resin extrusion block -〇-8 installed above the conveyor belt 7 so as to be freely movable and retractable, and the movable resin cooling block 9 installed in parallel with the movable resin extrusion block 8 are integrated. Then, the moving resin extrusion block 8 starts moving forward toward the carry-in side, that is, toward the gap between the cutting blade 1b for rear cutting and the upper surface of the front edge of the succeeding veneer 3, and the adhesive discharge hole 8a of the movable resin extrusion block 8 is opened. The vehicle is stopped at a position directly above the gap C formed between the leading edge of the trailing veneer 3 and the trailing edge of the leading veneer 6, and only the moving resin extrusion block 8 is moved to the trailing veneer 3.
lower it to near the end face of the leading edge of the Then, the valve 8b of the movable resin extrusion block 8 is opened, and the molten hot melt resin supplied from the resin supply port 8G is extruded in a spot form from the resin discharge hole 8a and injected into the gap C. Next, as shown in FIG. 5, at the same time as the movable resin extrusion block 8 finishes injecting the molten hot null l-resin 10a, the movable resin extrusion block 8 and the movable resin cooling block 9 are both retreated to the discharge side, and the movable resin is At a location where the cooling block 9 is located directly above the injected molten hot nulls 1 to #4 fat 10a, the retreating operation of the melted hot nulls 1 to #4 is stopped. Then, at this time, it was brought in] -1 Nbenono/1b Named at 11.1 ■
Operate the IJ movement mechanism 11 qfj so that it moves forward normally by 1 to 51 JuIr culm Lq to the forward position.
C: Press the leading edge of the leading middle plate (5) onto the trailing edge of the leading edge of the 3.
]() to match this to 1+j. 1.1 - part of the molten resin 10a injected into the gap 0, 1.1, and the upper surface of both shells 3, 0 with the abutting action of 1)
Molten Hola 1~Mel 1~Resin 10a was injected into gap 0 so that it protruded by some 1.1°, and eventually went to Subo 1.
is a slightly T-shaped section 1-)! I'm in this 4-year-old state.

Next, as shown in FIG. Molten hot melt resin applied to the veneer joints
Q 21) Moaning while stretching 11. For example, for 0.3 to f1 seconds, the culm is 1 ohm. 1 piece of the above melt resin 10r
) After cooling and assimilating the mobile resin cold 7j'i-7otsuk 9 and this (the mobile resin extrusion tube 7j'i-7otsuk 9 installed in parallel), as shown in Fig. Then, it retreats to the initial standby position and waits for the next joining operation, and also carries out the transport operation of the two veneers 3.6 that are joined in a slanted manner at the loading conveyor 4 and the unloading conveyor 71. Then, the succeeding veneer 3 becomes the Ti veneer 6 and is carried out from the gap between the receiving blade surface 2[) and the cutting blade 4b for rear cutting, which is located in the L direction of the double-sided receiving blade 2.'' 770), as shown in Fig. 8, the defective part (near the rear edge of the leading middle plate 6) arrives directly under the cutting blade 4b for trailing cutting. Cutting blades 1a and 1 for front cutting (cutting blade 1b for cutting and carry-in conveyor 4 are simultaneously paid out downward, brought in and lowered, and the trailing edge cutting operation is performed (by doing this, the defective part is removed from the rear cutting It is automatically cut by the cutting blade 1b for cutting to become chips 5b, which remain at the delivery part 4a at the tip of the conveyor 4, but are pushed out by the new succeeding medium 4 and 3. Directly below = 12- falls and is separated.

(G) Effects of the Invention Since the present invention has the structure and operation as described above, the molten hot melt extruded in spots] - The resin is applied to the front edge of the connecting intermediate plate and the rear edge of the preceding veneer. Hot Null 1 with a T-shaped cross section is injected into the gap formed by the parts and then strongly crushed to correct any bending when cutting, while applying the resin to bridge the upper surface of each part. As it is cooled and solidified, the anchoring effect of the hot-melt resin with its T-shaped cross section greatly increases the bonding strength, making it difficult for even relatively thick veneers to bend easily on either side, i.e., in the subsequent process. Not only has it been possible to efficiently produce strong bonded veneer products that do not easily break during handling, using a single device that can be used for both thick and thin sheets, but also the bonded end surfaces (with very close butt As a result, the quality of plywood products and the gluing work in the later stages of the process were significantly improved, making it an extremely effective invention.

[Brief explanation of drawings]

The figure shows an example of the implementation of the present invention.
The figure shows the operation mode according to the veneer cutting and joining order. 3... Following veneer, 6... Leading veneer, 8... Moving resin extrusion block, 9... Moving resin cooling block, 10
a, 10b...Melting hot melt resin, C...Gap.

Claims (2)

[Claims] (1) A mobile resin extrusion block that moves forward to the upper surface of the veneer joint, extrudes molten hot melt resin in a spot shape, and then retreats, and the movable resin extrusion block extrudes the molten hot melt resin in a spot shape. In a veneer joining machine equipped with a movable resin cooling block that presses and cools the molten hot melt wood from above, the leading edge of the trailing veneer that has been cut is connected to the leading edge of the leading veneer in the standby position. The method involves moving the trailing veneer to a slightly rearward position, and applying molten hot melt resin to the gap between the leading edge of the trailing veneer that has been moved to the slightly rearward position and the trailing edge of the leading veneer that is in the standby position. By extruding and injecting the resin in spots, and by re-moving the molten hot melt resin injected into the gap between the leading edge of the succeeding veneer and the trailing edge of the preceding veneer to a slightly forward position of the succeeding veneer, A veneer joint characterized in that the molten hot melt resin is crushed while protruding from the upper surface, and the molten hot melt resin that has been crushed while being slightly protruded from the upper surface is pressed and cooled from above to be anchored in a T-shaped cross section. Anchor joining method in a machine. (2) An anchor joining method using a veneer joining machine according to claim 1, wherein the amount by which the following veneer is moved back to the front position is slightly larger than the amount by which the following veneer is moved to the rear position.