JP2782434B2 - A method of sticking paper to plywood and a laminator for it - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching paper to a plywood board and a laminator therefor.

[0002]

2. Description of the Related Art A commercially available flooring is a typical example of a veneer laminated veneer obtained by bonding a thin veneer veneer utilizing the aesthetic effect of natural heather to the surface of a base plate veneer through a paper sheet. However, a method as shown in FIG. 27 is employed for automatically and continuously attaching paper to the surface of the base plate plywood.

[0003] That is, the base plate plywood (1) is made of the fiber (heat treatment).
In the process of longitudinal feeding along the direction (y-y), the undercoating adhesive (3) is applied to the surface by the roll coater (2), and the paper (4) also has its fiber direction (z -Z) is fed out along the longitudinal direction parallel to that of the base plate plywood (1), and is adhered to the surface of the base plate plywood (1) by a pressure roll (5) or a flat plate press. In the process, a top coat adhesive (7) is applied to the surface of the paper (4) in order to stick and integrate the thin decorative veneer (6).

[0004]

However, in such a method, if the above-mentioned undercoating adhesive (3) is applied in a large amount, the undercoating adhesive (3) is applied when the paper (4) is attached to the base plate plywood (1) by pressure bonding. The paper (4) penetrates upward through the paper (4), adheres to the surface of the pressure roll (5) or the flat plate press, and contaminates it. Otherwise, the result is that the primer (3) is only impregnated on a part of the back side of the paper (4).

In view of the above, it is necessary to compensate the adhesive strength of the decorative veneer (6) by the undercoat adhesive (3). 6) At the time of sticking and bonding, the thin decorative veneer (6) penetrates upward through a conduit or the like of the thin veneer (6). The applied top coat adhesive (7) hinders the fixation of the colored paint and causes coloring unevenness, so the applied amount of the top coat adhesive (7) must be adjusted to a small amount. (7) results in that only a part of the surface of the paper (4) is impregnated.

That is, as is clear from the enlarged cross-sectional view of FIG. 29 showing the completed state of the product-decorative laminated plywood (M), the paper (4) is locally bonded to both adhesives ( 3) (7) is merely impregnated, and the intermediate portion (4a) remains in a base paper state so as to separate both adhesives (3) and (7).

As a result, during use as a decorative laminated plywood (M), the paper (4) repeatedly expands and contracts due to a change in humidity over time, and the intermediate portion (4) is in its original paper state.
From a), the decorative veneer (6) is liable to cause delamination,
The durability cannot be maintained.

As a countermeasure against such a problem, it is sufficient to apply a large amount of the undercoat adhesive (3) and to penetrate and impregnate the entire paper (4). As described above, (3) oozes out of the paper (4) and contaminates the surface of the pressure roll (5) or the flat-plate press. . This is the current bottleneck for automatic mechanization.

[0009]

SUMMARY OF THE INVENTION The present invention is intended to solve such a problem, and as a method of adhering paper to a plywood plate useful for this purpose, a synthetic resin applied to the surface of the plywood plate is used. Japanese paper or other roll paper that can be impregnated with a system adhesive, and a fixed compaction roll facing the base plate plywood from above,
The fixed rolling roller is acted up and down from below so that the adhesive scraping blade plate elastically urged against the circumferential surface and the fixed rolling roller together with the fixed rolling roller can clamp the plywood plate. The movable compacting rolls that are to be

[0010] By sequentially pushing the base plate plywood between the upper and lower sides of the two compacting rolls, the roll paper is brought into contact with the surface of the base plate plywood from above in a covered state.

[0011] a movable compaction roll is raised operative for each push them, by its movable compaction roll and uniform rotation is being fixed compaction roll, such that the adhesive the roll paper is impregnated with混然integrally , Is sequentially attached to the surface of the baseboard plywood and integrated,

The adhesive that oozes out of the roll paper and adheres to the working circumferential surface of the fixed pressure roll is removed from the scraping blade plate.
Is characterized by scraping and cleaning,

Further, as a laminator useful for carrying out the above-described method, a fixed rolling roller rolled so as to face the transport line of the plywood of the base plate from above, and a speed change to a rotating shaft of the fixed rolling roller. A drive motor that is operatively connected via a cam clutch, an adhesive scraping blade plate that is also elastically urged against the working surface of the fixed compaction roll, and a base plate combined with the fixed compaction roll. To be able to pinch plywood,
A movable compacting roll that is raised and lowered from below, a drive motor that is operatively connected to the rotating shaft of the movable compacting roll, and an automatic Equipped with a pusher that is intermittently advanced and retracted, and a Japanese paper or other roll paper that can be impregnated with an adhesive that is attached to the surface of the base plate plywood pushed in by the pusher in a covered state from above,

The plywood plate, the surface of which is coated with a synthetic resin adhesive in advance, is sequentially pushed between the upper and lower sides of the two compaction rolls by the above-mentioned pusher, and the surface of the plywood plate is covered with roll paper. Along with the state,

[0015] At the contact point between the movable compacting roll that is raised each time it is pushed in and the fixed compacting roll that is rotated at a constant speed by the cam clutch, the adhesive is mixed together with the roll paper. So as to be impregnated into the surface of the plywood plate,

The adhesive that oozes out of the roll paper and adheres to the working circumferential surface of the fixed pressure roll is removed from the scraping blade plate.
Is set so as to scrape and clean.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show a schematic whole of a laminator for decorative laminated plywood, which has a fixed length as a base material thereof. On a line for automatically and intermittently transporting a base plate plywood (10) having a width (L1) and a width (W1), a base plate plywood (10) for sequentially and continuously attaching roll paper (11) to the surface thereof. Feeding device (A), a paper pasting device (B) adjacent to the lateral side thereof, and a feeding device (C) for a base plate plywood (10) further laterally adjacent to the paper pasting device (B). And a paper cutting device (D) facing from above between the paper pasting device (B) and the feeding device (C).

FIGS. 3 to 5 show the plywood plate (1) at a position corresponding to each of the devices (A), (B) and (C) of the laminator.
0), but when it is fed to the feeding device (A) by an auto feeder (not shown), the veneer (10a) that forms the base plate plywood (10)
As shown in FIG. 3, the fiber (heat treatment) direction (yy) is set to be the same as the longitudinal direction (Y) by the feeding device (A), and the surface thereof has a roll coater ( The undercoat adhesive (12) of the synthetic resin is applied in advance through a method such as illustrated (not shown).

FIG. 4 shows the base plate plywood (10) and the roll paper (1) in the paper pasting process in the paper pasting apparatus (B).
1) shows the relation with the base plate plywood (10).
Is pushed and moved from the feeding device (A) in the lateral direction (X1) where the paper pasting device (B) is present, so that the fiber direction (yy) of the front veneer (10a) is changed to the roll paper ( It crosses the fiber direction (xx) of 11).

In this case, unlike the conventional decorative paper for printed plywood described above, the roll paper (11) is impregnated with Japanese paper, non-woven fabric, or another synthetic resin-based primer (12), so that the roll paper (11) is impregnated with the adhesive. These are papers that can be used as synthetic resin adhesive films that are unnaturally integrated. Therefore, the undercoat adhesive (12) that has leached from the surface easily adheres to and stains the surface of the fixed compaction roll described later, and there is a technical reason and necessity to provide a cleaning device in order to prevent the contamination. Details will be described later.

Then, the fiber direction (xx) (y-
y) The base plate plywood (10) on which the roll paper (11) is pasted in the cross state of the comrades is then attached to the paper pasting device (B)
Through the delivery device (C) and in the lateral direction (X2) (X
In the process, the roll paper (11) is cut at the boundary (seam) between the preceding board plywood (10) sent out and the succeeding board plywood (10). The device (D) cuts itself into a single-wafer form corresponding to the size of the plywood (10), resulting in a finish as shown in FIG.

The specific configuration of each of the above devices (A), (B), (C), and (D) will be described in detail according to the order of operation.
It is as follows.

That is, first, in FIG. 6 to FIG. 8 in which the feeding device (A) for the base plate plywood (10) is extracted and shown, (1)
Reference numeral 3) denotes a feeding device frame which is three-dimensionally formed from steel material at a certain height, and has a rectangular shape elongated in the vertical direction (Y) in plan view, which is larger than one of the plywood plates (10).

(14) is the feeder frame (1)
3) a plurality of horizontal roller conveyors which are mounted on the upper surface of the roller conveyor in a transverse state in a transverse state, and the plywood (10) is sequentially fed along the vertical direction (Y) to the roller conveyor (14). Come. (15) is a front receiving stopper for the vertically fed base plate plywood (10), which is raised from the upper surface of the feeder frame (13) to be higher than the plane of action of the roller conveyor (14). It is laid down.

The front stopper (15)
Is composed of an L-shaped plate piece in a side view, and is attached and fixed to the upper surface of the feeding device frame (13) by a pair of left and right bolts (16). (17) is each bolt (1
The receiving adjustment slot 6) is elongated in the front-rear direction, so that the mounting position of the stopper (15) can be adjusted.

(18) is the roller conveyor (1).
In the lower position of 4), the pusher has a certain length and extends in a longitudinal direction perpendicular to the front stopper stopper (15).
A pair of locking claws (19) for locking to one side surface of (0) is integrally provided upright.

(20) is a connecting piece fixed to the intermediate portion of the pusher (18) from below, (21) and (22) are a piston rod fastened to the connecting piece (20) and an air cylinder for moving the piston forward and backward. And as a whole, the feeder frame (13) is suspended. (23) is a trunnion for absorbing the distortion during the forward / backward operation.

Further, (24) is a piston rod (21)
Are a pair of front and rear guide shafts fixedly and horizontally mounted in parallel with the pair of front and rear, and a pair of front and rear bearing metal (25) fitted with these guide shafts.
8) is stably supported.

Then, the plywood (1) vertically fed to the feeding device (A) by an auto feeder (not shown).
0) is received by the front receiving stopper (15), the position is detected by the first sensor (26), and the air cylinder (22) which receives an electric signal from the stopper detects the position of the base plate plywood (22). A pusher (18) provided with a pair of front and rear locking claws (19) for locking with one side surface of (10) is advanced in the lateral direction (X1), and the base plate plywood (10) is pasted on paper. It is designed to be pushed into the device (B). The pusher (18) is automatically and intermittently advanced and retracted for each of the plywood plates (10).

(S) suggests the forward / backward operation stroke, but the lateral direction (X) is determined by the pusher (18).
The leading end (the remaining one side surface) of the base plate plywood (10) pushed into 1) reaches a contact point between a later-described movable compaction roll and a fixed compaction roll forming the paper pasting device (B). Will be.

Next, regarding the paper sticking device (B) to the base plate plywood (10), FIG.
9 to 20, (27) is a paper pasting apparatus frame which is also framed from a steel material into a vertically elongated rectangle in a plan view, which is considerably higher than the feeding apparatus frame (13). And it is connected and integrated in parallel with the side of the feeding device frame (13).

(28) is vertically extended to a bias position (position shifted to the left side in FIG. 1) adjacent to the feeding device (A) in the frame of the paper attaching device frame (27). A horizontal movable roller, the surface of which is made of an elastic material such as rubber or synthetic resin, and receives the base plate plywood (10) pushed by the pusher (18) of the feeding device (A). , And elastically presses from below.

(29) is a pair of front and rear bearing metals that serve as a rotary support shaft (30) of the movable compaction roll (28);
(31) is a pair of front and rear air cylinders for raising and lowering the pressure roller (28). The upper ends of the piston rods (32) are integrally connected to the bearing metal (29).

An input sprocket (33) is fitted to one end of the rotary support shaft (30) and integrated therewith, and (34) is a geared motor with a clutch brake for rotating and driving the movable rolling roller (28). The output sprocket (35) is supported so as to face the input sprocket (33) and at a height position that halves the lifting / lowering operation stroke of the pressure roller (28).

An endless transmission chain (36) is wound between the input sprocket (33) on the rotating shaft (30) and the output sprocket (35) of the geared motor (34). Therefore, even though the movable rolling roller (28) is moved up and down by the air cylinder (31), the rotational driving force from the geared motor (34) is constantly applied to the rolling roller (28) without loss. Can be transmitted to

(37) is the feeder frame (1).
3) a horizontal guide bar that is also mounted longitudinally in the frame of the paper pasting device frame (27) so as to be interposed between adjacent left and right sides of the movable compaction roll (28).
Reference numeral (38) denotes an adjustment slot for receiving a pair of front and rear mounting bolts (39).
7) The mounting height can be adjusted. As is apparent from FIG. 7, the lower surface of the base plate plywood (10) pushed in along the lateral direction (X1) by the pusher (18) of the feeding device (A) is moved to the guide bar (37).
And smoothly guided to the movable rolling roll (28).

Reference numeral (40) denotes a second sensor for detecting the position of the plywood (10) which has reached the end point of pushing in the lateral direction (X1). In order to retreat the pusher (18) in the return direction, the air cylinder (22) is controlled.

Further, (41) is a position adjacent to the movable rolling roller (28) opposite to the guide bar (37) in the frame of the paper pasting device frame (27) (a position shifted to the right side in FIG. 1). ), A horizontal guide plate (42) arranged in a transverse state is a pair of left and right support pillows, and is fixed in a longitudinal state to a middle height position of the paper pasting device frame (27).

Reference numeral (43) denotes an endless first belt conveyor for continuously feeding the base plate plywood (10) in the horizontal direction (X2), and comprises a driving pulley (44) and a driven pulley (4).
5), and the lower surface thereof is supported by the guide plate (41). (4
Reference numeral 6) denotes an inverter-driven geared motor for driving the first belt conveyor (43) to rotate, and is connected to a driving pulley (44) via a transmission belt (47).

(48) is the first belt conveyor (4)
The third sensor for detecting the position of the plywood (10) in the process of traversing in the step (3) works only on the first one of the plywood (10) at the beginning of the operation, and the movable rolling roller (28) is lowered and returned.

Reference numeral (49) designates a pair of opposed front and rear support masts which similarly stand upright from the upper surface of the paper pasting device frame (27), and each has a central portion for receiving a rotary support shaft as shown in FIG. The notch (50) is cut out. Reference numeral (51) denotes a horizontal roll paper rotation shaft which is longitudinally cut between the support masts (49), and has a front end portion and a halfway portion in the recesses (50) of the support masts (49). In a state of being freely dropped and inserted from above, it is supported by a pair of left and right idle rollers (52) from below.

A top cover (53) is rotatably mounted on a support mast (49) via a horizontal pivot pin (54) so as to open and close the entrance of each recess (50). An idle roller (55) attached thereto is in contact with the upper surface of the roll paper rotation support shaft (51). (5
6) are fixing bolts for the top cover (53).

As is apparent from FIG. 13, the roll paper (11) mentioned above is fitted on the roll paper rotation support shaft (51), and the band width (W2) of the roll paper (11) is set to the base plate plywood (10). ) Are set to have substantially the same dimensions as the length (L1). Reference numeral (57) denotes a pair of front and rear conical pieces press-fitted between the core tube (58) of the roll paper (11) and the roll paper rotation support shaft (51). ) Is held so as to be able to rotate integrally with the rotation support shaft (51). (5
Reference numeral 9) denotes a mounting bush for each conical piece (57), and reference numeral (60) denotes a pressing bolt for the rotary support shaft (51).

(61) is a roll paper rotation support shaft (5).
1) An integrated brake drum fitted to the rear end,
Reference numeral (62) denotes the brake shoe, and a lower end of an inverted U-shaped steel strip (63) wound around the brake shoe (65) is integrally suspended from a cylinder mount (64).
And the steel strip (63)
Is connected to and integrated with the upper end of a piston rod (67) which is raised and lowered by an air cylinder (66). The cylinder mount (64) is attached and fixed at a mid-height position of the paper pasting device frame (27).

The lowering force of the piston rod (67) causes the rotation shaft (5) of the roll paper (11) to rotate.
1) is braking. In other words, only when the roll paper (11) does not idle at all times and a forcible pulling force is applied from the leading end side of the roll paper (when receiving the pushing force of the plywood), FIG. Arrows 14 and 15 (F)
In other words, it is gradually fed out in the direction. The braking force can also be adjusted strongly by the air cylinder (66).

However, instead of the above-described band brake type, as shown in a modified example of FIG. 16 corresponding to FIG. 13, the roll paper rotating support shaft (51) is fitted and integrated with the rear end portion. The large-diameter transmission gear (61a) and the mounting table (6
4a) The output gear (67a) of the powder brake (66a) installed above meshes with and rotates, and the detection object (62a) attached to the transmission gear (61a) is detected by the proximity switch (63a). , The rotating spindle (5
It is preferable that the braking force applied to 1) is always kept constant in accordance with the change in thickness accompanying the feeding of the roll paper (11).

(68) is a longitudinal state parallel to the rotating shaft (51) of the roll paper (11), and is a horizontal first shaft also suspended on the upper surface of the paper pasting device frame (27).
A wrinkle removing roll, (69) is a second wrinkle removing roll also suspended in parallel at the middle position of the paper pasting device frame (27), and (70) is a first and second wrinkle removing rolls (68), (6).
9) guide rolls suspended parallel to each other between the upper and lower sides, and the leading end side of the roll paper (11) that has been subjected to the bypass guide action of the rolls (68), (69), and (70) group is the platform. Upon receiving the pushing force of the plate plywood (10), it is introduced into the contact point between the movable compaction roll (28) and the fixed compaction roll described below.

Further, (71) is the feeding device (A)
The plywood (10) pressed by the pusher (18) can be pinched together with the movable pressure roll (28) so that the plywood (10) is positioned directly above the pressure roll (28). 9 to 12 are horizontal fixed compaction rolls suspended in a longitudinal state as shown in FIGS. 9 to 12, and the movable compaction rolls (28) are moved up and down, while the fixed compaction rolls (71). Is fixedly mounted in the frame of the paper pasting device frame (27). Reference numeral (72) denotes a pair of bearing metals for supporting the front and rear ends of the rotary support shaft (73) in the fixed compaction roll (71).

Further, the working circumferential surface of the movable compaction roll (28) is made of an elastic material such as rubber or synthetic resin, thereby applying a push-up elastic force to the lower surface of the base plate plywood (10). On the contrary, this fixed compaction roll (7
The working circumferential surface of 1) is made of a metal material and is finished to a smooth mirror surface.

Thus, the movable rolling roll (2)
8) While firmly supporting the upper surface of the plywood plate (10) while resisting the upward pressure, the plywood plate (10) is moved up and down between the movable compaction roll (28) and the fixed compaction roll (71). Pressure is applied to each other so as to continuously feed the pusher (18) in the lateral direction (X2), and the adhesive (1)
The smooth mirror surface prevents the 2) from adhering to the working circumferential surface of the fixed compaction roll (71), and the roll paper (11) slides along the smooth mirror surface to prevent wrinkling and breakage. It has become.

(74) is a large-diameter input sprocket which is fitted to and integrated with the front end of the rotary support shaft (73) of the fixed compaction roll (71), and (75) is above the input sprocket (74). In this position, a motor mount is attached to and supported by the paper pasting device frame (27), and a geared motor (76) for rotating and driving the fixed compaction roll (71) is mounted on the motor mount.

Moreover, the motor mounting base (75) is moved and adjusted along the left and right sides to the paper pasting apparatus frame (27) via a pair of front and rear bolts (77) and its receiving adjustment slot (78). It is installed freely so that the first and second transmission chains to be described later can be engaged and disengaged and tensioned. (79) is a small output sprocket of the geared motor (76).

(80) is the motor mount (7)
5) A fixed-compacting roll-shifting cam clutch mounted adjacently to the geared motor (76) in parallel with the large-diameter first transmission sprocket (82) on the cam shaft (81) and the geared motor. An endless first transmission chain (83) is wound around the left and right sides of the output sprocket (79) of the motor (76), while the second transmission sprocket is also small in diameter on the cam shaft (81). (84)
And a rotating shaft (7) in the fixed compaction roll (71).
3) Between the upper and lower portions of the upper input sprocket (74), another endless second transmission chain (85) is wound.

The reason for the interposition of the cam clutch (80) is that the fixed compaction roll (71) is rotated relatively slowly at a lower speed than the movable compaction roll (28) so that the adhesive (1)
A cleaning device (E) including a scraping blade plate, a vibrator, a cleaning liquid storage tank, and the like, which will be described later 2), ensures that the working circumferential surface of the cleaning device (E) can be reliably cleaned, while the movable rolling compaction roller (28) that has been raised is operated. During the paper adhering operation of sandwiching the base plate plywood (10) between the upper and lower sides of the base plate plywood (10), the speed is increased so that the fixed compaction roll (71) is rotated at a constant speed with the movable compaction roll (28). By the roll paper (11)
In order to prevent wrinkles and breakage. The fixed compaction roll (71), which is kept free in the direction of rotation, is automatically intermittently the same as the movable compaction roll (28) each time the movable compaction roll (28) is raised. It is designed to rotate at high speed.

As is clear from FIGS. 17 to 20, the cleaning device (E) is attached and supported so as to face the working circumferential surface of the fixed compaction roll (71).

That is, reference numeral (8) in FIGS.
6) a fixed spacer (87) attached to the paper pasting device frame (27) at an intermediate height position in a non-interfering state surrounding the rotating support shaft (73) of the fixed pressure roller (71); ) Is a support plate that hangs from each of the fixed spacers (86), and the lower end thereof is a bolt (88).
Is joined and integrated with the fixed spacer (86).

Reference numeral (89) denotes a horizontal square axis which is cut vertically parallel to the obliquely upper position of the fixed compaction roll (71), and only the front and rear ends thereof are round shaft portions (90), and the support plate (87) is provided. ) Bearings (9
According to 1), it is supported in a pivotal state. (92) is a segment case of each bearing (91),
They are assembled and integrated via bolts (93).

Reference numeral (94) denotes an adhesive scraping blade plate which is sandwiched between the pressing lower bar (95) and the fixing screw (96) on the flat lower surface of the square shaft (89). The fixed rolling roller (7) whose sharp edge portion is made of the above metal material
It protrudes toward the working circumferential surface of 1).

Needless to say, the scraping blade plate (94) extends the same length as or slightly longer than the length of the fixed compaction roll (71), and the working circumference of the compaction roll (71). The projecting halfway toward the surface is in a restricted state where it is pressed from above by a plurality of stop bolts (97) scattered at a constant interval.

Moreover, each stop bolt (97)
Is screwed into a mounting block (98) attached and fixed to the side surface of the above-mentioned square shaft (89) so as to be able to perform forward and backward adjustment operations from above. (99) a pair of spring receiving arms fitted and fixed near the front and rear ends of the square shaft (89);
(100) is a pair of front and rear horizontal spring receiving pins integrally projecting from the intermediate height position of the support plate (87) so as to face the same.

A tension coil spring (101) is suspended between the upper and lower sides of each spring receiving arm (99) and the spring receiving pin (100), whereby the cutting edge of the scraping blade plate (94) is cut. Roller fixing part (71)
Is pressed against the circumferential surface. Therefore, from the direction opposed to the fixed compaction roll (71) which is driven to rotate in the direction conforming to the feeding direction (F) of the roll paper (11),
The adhesive (12) adhered to the working circumferential surface can be scraped off by itself and efficiently.

Reference numeral (102) denotes a vibrator provided at the center of the above-mentioned square axis (89), and thereby the square axis (8)
9) and the attached scraping blade plate (94) are vibrated,
The adhesive (12) adhered to the working circumferential surface of the fixed compaction roll (71) can be scraped off more efficiently.

Reference numeral (103) denotes a cleaning liquid storage tank mounted on the upper surface of the paper pasting apparatus frame (27), and a cleaning liquid supply hose (104) directed to the blade edge of the scraping blade plate (94). ) Is provided, and the cleaning liquid is dripped from the tip nozzle portion. Reference numeral (105) denotes an opening / closing valve interposed in the middle of the supply hose (104), and the amount of the cleaning liquid dripped can be adjusted by its opening degree.

Next, the delivery device (C) for the plywood plate (10) will be described.
Reference numerals 1 and 22 denote a feeder frame (106) which is formed from a steel material and has a three-dimensional framework substantially at the same height as the feeder frame (13). A pair of left and right is mounted on the shaft. Reference numeral (109) denotes an endless second belt conveyor wound around the driving pulley (107) and the driven pulley (108), and the base plate attached by the paper attaching device (B). The plywood (10) continues to be delivered in the lateral direction (X3).

(110) is the second belt conveyor (1)
09) is an inverter-driven geared motor installed below the driving pulley (107) for running drive, and is connected to the driving pulley (107) via an endless transmission belt (111). I have. The geared motor (110) is synchronized with the gear drive motor (46) for driving the first belt conveyor (43) mounted on the paper adhering device (B) to smoothly move the plywood (10). Acts sideways.

(112) is a pair of left and right horizontal support pillows fixed vertically to the upper surface of the delivery device frame (106), and (113) is further fixedly mounted on both support pillows (112). A pair of front and rear horizontal guide plates, which stably receive the lower surface of the second belt conveyor (109).

(114) is the second belt conveyor (1).
09) is a pair of front and rear stoppers for temporarily receiving the base plate plywood (10) sent out by the base rod plywood (10), and is embodied from a piston rod of an air cylinder (115) which can be raised and lowered in a state in which a transverse feed passage is shut off. I have.
A support stay (116) supports each of the air cylinders (115) in an upright state, and is fixed to the feeder frame (106) by fixing bolts (117). Numeral (118) is a slot for adjusting the receiving of the fixing bolt (117), which is elongated in the left and right direction, so that the mounting position of the air cylinder (115) can be adjusted.

That is, the stop stopper (114) for receiving the base plate plywood (10) by the two air cylinders (115).
Is raised, and when the preceding plywood (10) sent out from the paper pasting device (B) is received, the plywood (10) is controlled by the fourth sensor (119) which detects the position. paper cutting device (D) is, prior
Over the base plate plywood (10) in the trailing of the base plate plywood (10)
The continuous roll paper (11) is cut at the boundary (seam) between the adjacent baseboard plywoods (10), and as soon as the cutting, the receiving stopper (114) is lowered and returned, and The plywood (10) is continuously fed from the feeding device (C).

For this purpose, as shown in FIGS. 1 and 2, the distance between the cutting position of the paper cutting device (D) and the above-mentioned paper sticking position (the contact point between the movable rolling roller and the fixed rolling roller) is defined as the distance between the left and right sides. L2) is defined et been in almost <br/> have equal dimensions and a constant width (W1) of the base plate plywood (10), and also receiving the cutting position and the paper cutting device (D) Sutotsupa (114 )
Are also set to have dimensions substantially equal to the fixed width (W1) of the plywood plate (10). The plywood (10) is automatically and intermittently sent out in the horizontal direction (X2) (X3) at each of these distances (L2) and (L3).

Further, the paper cutting device (D) will be described. In FIG. 21, FIG. 23 and FIG. 24 which are extracted and shown, (120) is a paper pasting device frame (27) and a feeding device frame (106). ) Is a paper cutting device frame interposed and connected between the left and right sides, and is also framed from steel so as to be taller than the delivery device frame (106).

Reference numeral (121) denotes a pair of left and right support tables which maintain substantially the same height as the guide plate (41) of the paper sticking device (B) and the second belt conveyor (109) of the feeding device (C). , Paper cutting device frame (12
The cutting blade plate (122) of the roll paper (11) escapes into the gap between the left and right sides of the halfway height position horizontally.

The cutting blade plate (122) is in a longitudinal state facing the support table (121) from above and, needless to say, is equal to the band width (W1) of the roll paper (11).
Or, it extends slightly longer than this, and its blade edge portion is provided with a gentle inclination angle (θ). As a result, the biting force of the cutting edge portion with respect to the roll paper (11) is increased, and cutting can be performed stably and beautifully.

The upper end of the cutting blade plate (122) is joined to the lower end of a hanger plate (123) slightly longer than the cutting blade plate (122), and is fixed by a number of bolts (124) distributed at regular intervals. ing. Numeral (125) is a pair of angle bars which are sandwiched between the upper ends of the hanger plate (123) in a symmetrical back-to-back state, and each horizontal piece has an inverted U-shaped rod receiving frame (12).
The plurality of items 6) are fixedly erected in a dotted distribution state that keeps a constant front-back distance.

Further, (127) is each rod receiving frame (1).
26) and an elevating rod suspended from the horizontal piece of the angle bar (125). A retaining nut (128) is fastened to the upper end screw portion of the elevating rod. ), A horizontal holding plate (129) is attached and fixed in a longitudinal state.

Numeral (130) is a spring receiving piece integrated near the lower end of each elevating rod (127), and a compression interposed between the upper and lower parts of the horizontal bar of the angle bar (125). A coil spring (131) is wound around the lifting rod (127). As a result, the elevating rod (127) is constantly pressed down to the down state,
The holding plate (129) at the lower end is a plywood plate (1).
0) is pressed from above.

A pair of air cylinders (132) for raising and lowering the cutting blade plate (122) are integrally hung from the upper surface of the paper cutting device frame (120). Reference numeral (133) denotes a piston rod of each air cylinder (132). A fork (134) attached to the lower end of the air cylinder (132) includes a hanger plate (123) of the cutting blade plate (122) and a pair of right and left angles sandwiching the hanger plate (123). The bar (125) is integrally connected to and attached to the bar (125) from above.

It has been described above that the hanger plate (123), which extends longitudinally along the front-rear direction of the paper cutting device frame (120), extends slightly longer than the cutting blade plate (122). A pair of bearing metals (135) is joined and fixed to both front and rear ends of (123).
Reference numeral (136) denotes an elevating guide column that penetrates each bearing metal (135), and a paper cutting device frame (120) for correctly operating the elevating and lowering of the cutting blade plate (122).
It is fixed upright within the frame.

When the cutting blade plate (122) is lowered by the air cylinder (132), the presser plate (129) is moved almost simultaneously with the blade edge portion or slightly earlier than the blade edge portion. ) Is pressed resiliently, and under this condition, the roll paper (11) is quickly and reliably cut by the cutting edge of the cutting blade plate (122).

As described above, the leading board plywood (10) and the trailing board plywood (10) are continuously connected via the roll paper (11) attached to the surface thereof. In the process, the roll paper (11) is cut into a single sheet at the boundary (joint) between the two plywood plates (10) by the lowering operation of the cutting blade plate (122). That is.

The completion of the cutting is indicated by the fifth sensor (1).
37), and as soon as it is detected, the receiving stopper (114) of the delivery device (C) descends and sends out the preceding base plate plywood (10) from the delivery device (C) while cutting. The blade plate (122) is lifted and returned to prepare for the lateral feed movement of the following plywood (10).

The laminator having the above structure automatically and continuously adheres the roll paper (11) to the base plate plywood (10) for decorative plywood as follows.

That is, the plywood (1) sequentially fed along the longitudinal direction (Y) to the roller conveyor (14) of the feeding device (A) by an auto feeder (not shown).
0) is received by the front receiving stopper (15), the air cylinder (22) attached to the feeding device frame (13) is moved by the electric signal from the first sensor (26) which has detected the receiving position. The pusher (1) connected to the piston rod (21)
8) is advanced in the lateral direction (X1), and the locking claws (1)
The plywood (10) locked by step 9) is pushed one by one to the paper pasting position of the paper pasting device (B) and moved.

In this case, at the beginning of the operation, the roll paper (11)
As shown by reference numeral (11a) in FIG. 25, the cutting end of the first plywood (10) is suspended in a state where the pushing movement passage is shut off. As described in 11), this is introduced into the lower surface of the fixed compaction roll (71) while being in contact with the surface on which it is covered.

When the position of the plywood (10) during the pushing movement is detected by the second sensor (40), the air cylinder (31) for moving up and down the movable rolling roller in the paper pasting device (B). ) Raises the movable compaction roll (28), and sandwiches and presses between the upper and lower fixed rolls (71) so as to receive the base plate plywood (10). (28) By the equal high-speed rotation of (71) and the first belt conveyor (43),
The base plate plywood (10) is continuously fed out in the horizontal direction (X2) from the contact points of the rolls (28) and (71).

As is apparent from FIG. 25, the horizontal direction (X
1) In the process of moving to (X2), plywood (10)
The roll paper (11) is firmly adhered and integrated on the surface of the plywood (10a), and in the attached state, as shown in FIGS. ) And the fiber direction (x) of the roll paper (11).
-X) crosses.

Further, the synthetic resin adhesive (12) previously applied to the surface of the base plate plywood (10) is impregnated uniformly into the roll paper (11), and the roll paper (11) is impregnated.
In other words, there is no blank portion in the state of the base paper, and it is mixed with the adhesive (12).

In the process from the paper affixing position (contact point between the movable compacting roll and the fixed compacting roll) to the paper cutting position of the paper cutting device (D), the position of the base plate plywood (10) is detected. When the first belt conveyor (43) detects the moving plywood (10) which is being sent out and moved in the lateral direction (X2), the movable roller (28) Is returned.

Further, the base plate plywood (10) is carried over from the first belt conveyor (43) to the second belt conveyor (109), from the paper cutting position of the paper cutting device (D) to the feeding device (C). It moves in the lateral direction (X3) and receives the stopper (11) attached to the delivery device (C).
4), the air cylinder (132) of the cutting blade plate (122) of the paper cutting device (D) is lowered by an electric signal from the fourth sensor (119) which has detected the receiving position. Cutting blade plate (12
According to 2), the roll paper (11) is cut at the boundary (seam) between the preceding board plywood (10) and the succeeding board plywood (10).

The disconnection is indicated by the fifth sensor (13).
7), the stopping stopper (114) of the delivery device (C) receiving the electric signal descends and returns, and the preceding plywood (10) is sent out from the delivery device (C). The cutting blade plate (122)
Also rises and returns, allowing the subsequent movement of the plywood (10).

From the second of the above plywood (10), 1
The roll paper (11) cut not only at the boundary (seam) between the first and the second, but also at the boundary (seam) between the first and the second as well as being continuously traversed so as to push it from behind.
The intermediate part is necessarily positioned so as to face the lower surface of the fixed compaction roll (71), and is covered in the second and third continuous state. 2
8) and the fixed compaction roll (71) can be attached and integrated successively without any trouble.

The third sensor (48) is used only for detecting the position of the first plywood (10) at the beginning of the operation, and the fifth sensor (137) is used to detect the third from the second.
In place of the sensor (48), position detection of the plywood (10)
Know. And from the second of the board plywood (10)
The receiving stopper (11) of the delivery device (C)
4), the movable rolling roll (28)
While the lower cylinder (31) is returned to the lower position,
At the same time or immediately thereafter, the roll paper (11) is
It is adapted to be cut by a plate (122).

Such an operation cycle is described as a plywood plate (1).
By repeating this process for each sheet of (0), the roll paper (11) can be stably stuck on the surface of the line on the line that automatically and intermittently conveys a large amount of the sheet. It can be sent out in such a single-wafer form.

The paper (1) stuck on the plywood (10)
On the surface of 1), a veneer veneer (138) thinned in the subsequent next step is coated with a synthetic resin-based topcoat adhesive (139).
26, the product is produced as a decorative laminated plywood as shown in FIG.

As the overcoating adhesive (139), a fixed ratio of a thermoplastic adhesive such as vinyl acetate resin emulsion and a thermosetting adhesive such as urea resin is used as in the case of the undercoating adhesive (12). It is preferable to use a mixture that has been adjusted based on the original.

According to the method of attaching paper to the plywood board (10), the undercoat adhesive (12) previously applied to the surface of the plywood board (10) was attached to this. The synthetic resin adhesive film (140) as shown in FIG. 26 is formed by penetrating the roll paper (11) and mixing and integrating the paper (11) and the adhesive (12). 11)
Since it does not remain in the base paper state, the top coat adhesive (139) for applying the decorative veneer (138) is slightly applied thereto, and the top coat adhesive (139) is applied to the surface of the decorative veneer (138). Even if you decide not to seep into
The decorative veneer (138) can be finished as a decorative laminated plywood without delamination.

In addition, the fiber direction (xx) of the roll paper (11) and the front veneer (10) on the base plate plywood (10).
The fiber direction (yy) of a) is in a cross-attached state, so that it exhibits excellent resistance to surface cracks of the decorative veneer (138), and the natural veneer (138) The aesthetic effect of the heather can be maintained for a long time.

The fiber direction of the decorative veneer (138) is the fiber direction (y) of the front veneer (10a) in the plywood (10).
-Y) is preferably adhered in parallel, but may be adhered in a cross state. Cover it,
The roll paper (11) and the undercoating adhesive (12), which are the so-called sticking bases of the decorative veneer (138), form a solid synthetic resin adhesive film (140) that is mixed together, Further, the paper (11) and the veneer veneer (10) face veneer (10a) are in a cross-bonded state in the fiber direction (xx) (yy), and the veneer veneer (138) ) Does not occur.

In the illustrated embodiment, the roller (14) of the feeding device (A) is placed on the roller conveyor (14) in the vertical direction (Y).
The platen plywood (10) once fed along along the direction is pushed and moved by the pusher (18) in the lateral direction (X1) where the paper pasting device (B) is present, and the table is moved. Although the fiber direction (yy) of the veneer (10a) is kept in a cross-attached state with the fiber direction (xx) of the roll paper (11), the vertical direction (Y ) Is omitted, and the base plate plywood (10) is automatically and intermittently fed into the horizontal direction (X1) where the paper pasting device (B) is present, so as to move straight, so to speak. But I can't do it.

[0099]

As described above, in the method for affixing paper to a plywood board according to the present invention, Japanese paper or other paper which can be impregnated with the adhesive (12) applied to the surface of the plywood board (10) is used. Roll paper (11), a fixed pressure roll (71) facing the base plate plywood (10) from above, and an adhesive elastically urged against the working circumferential surface of the fixed pressure roll (71). A scraping blade plate (94) and a movable rolling roller (28) that is raised and lowered from below so as to be able to pinch the plywood plate (10) together with the fixed rolling roller (71). Are installed in a parallel horizontal state,

The above-mentioned plywood (10) is rolled on both rolling rollers (7
1) By sequentially pushing the upper and lower parts of (28),
Roll paper (1) from above onto the surface of the base plate plywood (10)
1) is attached to the coated state,

The roll paper (11) is moved by the movable pressure roller (28) which is raised each time it is pushed in and the fixed pressure roller (71) which rotates at the same speed as the movable pressure roller (28). So that the adhesive (12) may be impregnated and integrated with the surface of the plywood (10),

The adhesive (1) which oozes out from the roll paper (11) and adheres to the working circumferential surface of the fixed compaction roll (71)
2), since so the scraper blade plate (94) is cleaned scraping, the effect of completely improve the problem of the prior art mentioned at the outset based on FIG 27-29.

That is, according to the above method of the present invention, when the roll paper (11) is adhered to the synthetic resin adhesive (12) applied to the surface of the base plate plywood (10),
The entirety of the paper (11) is impregnated with the adhesive (12), and the both are mixed and unified.
40) is formed and there is no portion remaining in the base paper state, so that the thin decorative veneer (138) to be affixed thereafter is not likely to delaminate from the base plate plywood (10). A decorative laminated plywood excellent in aesthetic effect and durability can be obtained.

The roll paper (11) is laid on a base plate plywood (10).
Of the movable compaction roll (28) and the fixed compaction roll (71) to be integrated by sticking to the paper (11), the working circumferential surface of the fixed compaction roll (71) is scraped with adhesive adhesive. Since the blade plate (94) is elastically urged, the adhesive (12) is applied to the surface of the plywood (10) with a large number of eyes, and this is impregnated into the entire roll paper (11). Even if it is set so that the synthetic resin adhesive film (140) is formed by transmitting light, the adhesive oozes out of the paper (11) and adheres to the working circumferential surface of the fixed compaction roll (71). Of the agent (12) against the scraping blade plate (94) .
Can Ri確 to really scraping cleaning by the force, without the addition of its frequent cleaning work, is there no risk of causing the trouble on the paper paste action.

In particular, if the method of claim 2 is adopted,
Fiber direction (yy) of front veneer (10a) and fiber direction (xx) of roll paper (11) in baseboard plywood (10)
And veneer veneer (13)
There is no danger of surface cracking of 8), and it is possible to obtain a decorative laminated plywood that is rich in aesthetic effect and durability utilizing the natural heat treatment of the decorative veneer (138).

[0106] As the laminator to be used for implementation of the above method, because it uses the configuration described in claim 3 is the upper <br/> temperature operation each time is sequentially pushed by Putsushiya (18) Roll paper (11) is attached to the plywood (10) by constant speed rotation of the movable compaction roll (28) and the fixed compaction roll (71) which is increased in speed each time through the cam clutch (80). Can be quickly and firmly stuck and integrated without fear of wrinkling or breakage, and there is an effect that mass processing can be efficiently performed by the automatic mechanical force.

Further, if the configuration of claim 4 is adopted,
The pressure of the movable rolling roll (28) and the rigidity of the fixed rolling roll (71) receive the base plate plywood (1).
In addition to stably and smoothly performing the action of attaching the roll paper (11) to 0), the mirror surface machined on the working circumferential surface of the fixed compaction roll (71) enables
There is also an effect that wrinkles and breakage of the roll paper (11) can be more reliably prevented.

[Brief description of the drawings]

FIG. 1 is an overall schematic side view of a laminator according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a perspective view showing a plywood board at the time of feeding.

FIG. 4 is a perspective view showing an arrangement relationship between a base plate plywood and roll paper.

FIG. 5 is a perspective view showing a state in which paper is stuck to a plywood plate;

FIG. 6 is a front view illustrating a feeding device for a plywood plate;

FIG. 7 is an enlarged side view of FIG. 6;

8 is a partially enlarged sectional view taken along line 8-8 in FIG. 6;

FIG. 9 is a front view illustrating a paper sticking apparatus extracted from the apparatus;

FIG. 10 is a development view extracting and showing a drive system of a fixed roller and a movable roller.

FIG. 11 is a partially enlarged side view of FIG. 9;

FIG. 12 is a side view showing a cleaning device for a fixed pressure roller.

FIG. 13 is a cross-sectional front view extracting and showing a bearing state of roll paper.

FIG. 14 is a right side view of FIG.

FIG. 15 is a left side view of FIG.

FIG. 16 is a sectional front view of a modified example corresponding to FIG.

FIG. 17 is a partially enlarged cross-sectional view showing a state where the cleaning device is attached to the fixed pressure roller.

FIG. 18 is a sectional view taken along line 18-18 of FIG. 17;

FIG. 19 is a sectional view taken along line 19-19 of FIG. 17;

FIG. 20 is a side sectional view corresponding to FIG. 18 showing a cleaning device extracted.

FIG. 21 is a side view showing a feeding device for a plywood plate and a paper cutting device.

FIG. 22 is an enlarged cross-sectional view illustrating a receiving stopper of the plywood.

FIG. 23 is a front view showing a paper cutting device.

FIG. 24 is a plan view of FIG. 23;

FIG. 25 is an explanatory view showing an operation of attaching paper to a base plate plywood.

FIG. 26 is a sectional view showing a completed state as a decorative laminated plywood.

FIG. 27 is an operation explanatory view showing a conventional paper sticking method for a base plate plywood.

FIG. 28 is a perspective view showing a conventional arrangement relationship between a base plate plywood and paper.

FIG. 29 is a sectional view showing a conventional decorative laminated plywood.

[Explanation of symbols]

 (10) ・ Plywood plywood (10a) ・ Table veneer (11) ・ Roll paper (12) ・ Adhesive (18) ・ Pusher (28) ・ Movable rolling roller (30) ・ Rotating spindle (34) ・Driving motor (71), fixed rolling roller (73), rotating shaft (76), driving motor (80), cam clutch (94), scraping blade plate for adhesive (A), feeding device for base plate plywood ( B) ・ Paper pasting device (C) ・ Delivery device for base plate plywood (D) ・ Paper cutting device (E) ・ Cleaning device (L1) ・ Constant length of base plate plywood (L2) ・ Spacing distance (L3)・ Spacing distance (W1) ・ Constant width of base plate plywood (W2) ・ Constant band width of roll paper (X1) ・ Transverse direction (X2) ・ Transverse direction (X3) ・ Transverse direction (Y) ・ Vertical feed Direction (xx)-Roll paper fiber direction (yy)-Front veneer fiber direction

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B27M 1/08 B27D 5/00

Claims (4)

(57) [Claims] 1. A roll of Japanese paper or other roll paper (11) which can be impregnated with a synthetic resin adhesive (12) applied to the surface of a base plate plywood (10), and upward to the base plate plywood (10). , A fixed pressure roller (71), an adhesive scraping blade plate (94) urged against the circumferential surface of the fixed pressure roller (71), and the fixed pressure roller (71). In order to be able to pinch the base plate plywood (10), a movable rolling roller (28) that is raised and lowered from below is laid in an entirely parallel horizontal state. ) To the two-sided pressure rolls (71) (28)
The roll paper (11) is brought into contact with the surface of the base plate plywood (10) from above by covering the roll paper (11) in a covering state, and the movable rolling roller (2) is raised each time it is pushed in
8) and the fixed pressure roller (71) rotated at a constant speed with the movable pressure roller (28).
Are adhered to the surface of the base plate plywood (10) one by one so that the adhesive (12) is impregnated and integrally impregnated, and are leached from the roll paper (11) to be fixedly pressed. A method of affixing paper to a plywood plate, wherein the adhesive (12) adhered to the circumferential surface is scraped off by the scraping blade plate (94). 2. The veneer plywood (10) is replaced with its front veneer (10a).
Of the fixed compaction roll (71) and the movable compaction roll (28) under the relation that the fiber direction (y-y) of the roll crosses the fiber direction (xx) of the roll paper (11). 2. The method for pasting paper to a plywood according to claim 1, wherein the paper is pressed into each other. 3. A speed change to a fixed rolling roller (71) suspended so as to face the conveying line of the base plate plywood (10) from above and a rotating shaft (73) of the fixed rolling roller (71). A drive motor (76), which is operatively connected via a cam clutch (80), and an adhesive scraping blade plate (94), which is also urged against the circumferential surface of the fixed rolling roller (71). Combined with the fixed compaction roll (71), the plywood (1
0) and a drive motor (34) that is operatively connected to a rotating shaft (30) of the movable pressure roll (28) to be raised and lowered from below so as to be able to pinch the pressure. A pusher (18) that is automatically intermittently advanced and retracted so as to sequentially push the plywood (10) between the upper and lower sides of the two compaction rolls (71) and (28), and is pushed by the pusher (18). Japanese paper or other roll paper (1) that can be impregnated with an adhesive (12) that is applied from above to the surface of the
The plywood plate (10), the surface of which is coated with a synthetic resin adhesive (12) in advance, is moved up and down by the pusher (18) between the two compaction rolls (71) and (28). Roll paper (1) onto the surface of the plywood (10).
While spliced to 1) the covering state, the movable roller compaction roll is raised operative for each pushed Part (2
8), a fixed compaction roll (7) rotated at a constant speed by the movable compaction roll (28) and the cam clutch (80).
At the point of contact with 1), the roll paper (11) is impregnated integrally with the adhesive (12) so that it can be impregnated integrally.
0), the adhesive (12) leaching from the roll paper (11) and adhering to the working circumferential surface of the fixed compaction roll (71) is applied to the scraping blade plate (11). laminator for paper attached to the base plate plywood, characterized in that set to 94) to scraping clean. 4. The working circumferential surface of the movable compaction roll (28) is made of an elastic material such as rubber or synthetic resin, while the working circumferential surface of the fixed compaction roll (71) is made of metal and smooth. In addition to finishing the mirror surface, the adhesive scraping blade plate (94) is applied to the working circumferential surface of the fixed compaction roll (71) from the direction opposite to the rotation direction.
4. A laminator for sticking paper to a plywood according to claim 3, wherein the laminator is biased.