JPH0216002A - Cutting and bonding device for decorative-board tape terminal section for veneer - Google Patents

Abstract

PURPOSE: To obtain a time and energy saving by using a pressure beam which is movable with respect to a fixed ground plate and held in a bridge which is vertically displaceable in order to apply a necessary pressure on extremities of decorative sheet tapes and an adhesive tape. CONSTITUTION: Two pairs of under knives 3, 4 are mounted on a fixed ground plate 1. Decorative sheet tapes 5, 5' for veneer are guided thereon and cut according to a desired saw tooth pattern. Upper knives 6, 7 cooperate with the under knives 3, 4. A hammer 13 of a pneumatic press exerts a necessary pressure on a pressure beam 10 in order to connect an adhesive tape by means of pressure and heat to the saw tooth shaped extremities of the tapes. The pressure is exerted by a pneumatic cylinder 28. The cylinder only has to be displaced over a very short distance during the pressurizing action, which signifies a sensible saving when the necessary time and energy for realizing that pressure build-up is taken into account.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention provides a method for cutting the ends of a veneer tape in a serrated manner between two pairs of upper and lower knives; a sledge for pulling the adhesive tape at the distal end in a direction transverse to the distal end of the decorative laminate tape;
The ends of the veneer tape and the adhesive tape are placed thereon and the necessary pressure is applied by the hammers of the reciprocating press, and for this purpose it is moved in a vertical direction movable relative to the fixed plywood. The present invention relates to a device for bonding under pressure by using a press and a beam supported on a flexible bridge.

[Conventional technology]

The ends of the veneer veneer are cut by a pneumatically controlled pressure hammer in a serrated manner and in the same sequence of actions, and the ends are brought together and interconnected by applying pressure and heat to the ends. It is known to bond and to selectively move the adhesive tape in a direction transverse to the direction of lateral movement of the veneer tape.

Not only are relatively large pressures required for these various operations, but also a very long time is required to develop this pressure during the various operations.

[Problem to be solved by the invention]

The object of the invention is to provide a device as mentioned above, which allows the generation of lower pressures for pneumatically realizing the various operations as mentioned above, and which makes it possible to save not only energy but also the total time mentioned above. The goal is to provide the following.

[Means to solve the problem]

In order to achieve the above object, the device of the present invention is composed of the following elements.

(a) Place the hammer of the press onto the bridge such that the downward movement of the bridge causes the hammer of the press to contact the end of the veneer tape resting on the presser beam on which the adhesive tape is placed. (b) a lower knife and an upper knife for cutting the decorative laminate tape at different heights, such that the hammer does not come into contact with the lower knife when pressing the decorative laminate tape to be bonded; (c) means for bringing said hammer into its rest position when it is released from said bridge; (d) lowering said bridge; (e) means for neutralizing the pressure created by the spring on the lower knife;

In a notable embodiment of the invention, said bridge, hammer and upper knife connected thereto are comprised of two pairs operatively connected to each other and one arm of which is driven by a pneumatic cylinder. By the action of two arms, it is moved up and down with respect to the fixed base plate, and the air cylinder acts by means of a horizontal arm on an eccentric disk, which controls the reciprocating movement of the two said arms, It is intended to provide an operative connection between the two.

Other Details and Advantages of the Invention: Apparatus of the Invention for serrating the ends of veneer veneer tape between two pairs of upper and lower knives and gluing the ends. It will become clear from the following description. This description is merely illustrative and does not limit the scope of the invention.

〔Example〕

Each figure only shows the main elements of the device of the invention. The elements shown in these figures consist of a fixed base plate l, which is part of a frame (not shown) of the device of the invention, and a bridge 2 that is movable to and from this plywood. The guide arrangement of this reciprocating bridge is not shown in the other figures.

Two pairs of lower knives 3 and 4 are mounted on the fixed base plate 1. The upper surfaces of these lower knives, over which the veneer tapes 5 and 5' are guided and thereby cut them into the desired serrations, are located at the same level.

Upper knives 6 and 7 cooperate with lower knives 3 and 4. A very important feature of the invention can be clearly seen in the different heights of the cutting planes of the upper knives 6 and 7. During the cutting operation, the ends of the veneer tapes 5 and 5' are held against the lower knives 3 and 4 by means of a pressure member 8.

The pressure created by these springs is neutralized by the air cylinders described below.

These two cutting actions performed by the upper knives 6 and 7 take only a fraction of a second as a result of the air pressure required to cut the two thicknesses of veneer tape being divided into two. be shifted. This is a very important feature of the invention.

Actually, decorative board tapes 5 and 5' are sledge (sled wipe material)
The reciprocating movement of these slides on the base plate 1 carried by the slides 11 towards 10 and towards each other is controlled by known means, such that a pneumatic cylinder moves the veneer tapes 5 and 5'' towards each other. Clamp and hold during approximation and during cutting and gluing operations.

The hammer 13 of the pneumatic press generates the necessary pressure on the pressing beam lo, so that the adhesive tape is connected to the sawtooth-shaped decorative laminate tape end by pressure and heat.

This operation can only take place when the press 14 is fixed relative to the bridge 2.

In FIGS. 1.2 and 3, the fixing element is only schematically indicated by the incision 15 and the pattern 15'. A possible embodiment is illustrated by FIGS. 4 and 5, in which the pneumatically controlled cylinder 16 is indicated by the arrow 21.
As shown in, controlling the reciprocating movement of the fixing arm 19,
This cylinder 16 has a pivot point 17 on the bridge 2 and a pivot axis 18 on a pivoting arm 19 with a pivot point 20 on this bridge 2.

The fixing arm 19 is in turn pivotally connected at 22 to a rod 23, which in turn is pivotally connected at 24 to a second fixing arm 19' having a pivot point 25 to the bridge 2.

The reciprocating movement of the fixing member 19' is indicated by the arrow 2r.

The fixing arms 19,19' are realized twice so that they can move on the front and rear sides of the hammer 13 and the pneumatic press 14. The locking arms thus form a pair of locking arms 19.19' each time the shaft 26.26' is driven.

Their purpose is that when these fixing arms 19 and 19' are moved towards each other, they are drawn over the steel blocks 27 and 27, which are rounded on the outside.

This position is shown in FIG. This fixed position of FIG. 5 naturally also corresponds to the fixed position shown diagrammatically in FIG.

Bridge 2 with upper knives 6 and 7 and pneumatic press 14 with hammer 13 so that cutting of the veneer tape and gluing of the resulting serrated ends takes place.
The pressure required for pulling down together is generated by all the members and by mechanical means forming another important feature of the invention.

This pressure is actually generated by only one pneumatic cylinder, in particular cylinder 28. This cylinder ensures both a cutting action and a pressing action. The piston rod 29 pushes upwardly a lever 30 pivotally connected thereto;
The lever 30 is connected to an eccentric disc 31 which, during the movement of the piston rod and the lever 30, is connected to the bridge 2 at 33.
ensures downward movement of the pivotally connected rod 32. This cylinder 28 only has to be moved over a very short distance during the pressure application, which represents a real saving when considering the time and energy required to realize this pressure build-up.

Starting from the eccentric disk 31, the lateral movement of the connecting rod 35 is ensured by a lever 39 with a pivot point 34, which connects the rod 35 by means of a pivot point 34' and the eccentric disk 31.
Arm 33 similarly connected to bridge 2 at 33'
During the reciprocating movement of ', the lever 39' is acted upon. A pneumatic cylinder 36 with a piston rod 37 and a pivoted connection 38 with the connecting rod 35 provides a force for counteracting the pressure exerted by the spring 9, while during the return movement of the cylinder 28 there is no force from the cylinder 36. The air is discharged toward an air conduit (not shown).

From the above description of the device of the invention, the following can be seen.

(1) A single cylinder, especially a pneumatic cylinder, cuts the ends of the decorative veneer tape even during the pressing and bonding action by heating the serrated ends of the decorative veneer tape to be joined together. and the cylinder 28 has a very limited distance ml (
Compared to similar machines, it only needs to be moved over a distance of about 115 mm and more force is generated by the transmission.

(2) Another pneumatic cylinder is hammer 13
Ensures downward movement of.

(3) The fixation of the bridge 2 to the base Fit is released in a very suitable manner and by using only one pneumatic cylinder.

(4) Cutting the serrated end of the decorative laminate tape is done in two stages. In addition, this means that the energy used is actually divided into two parts because the thickness of the decorative laminate tape is (d) and not (2d), which is also important for this purpose. This is because it is convenient for the pressure build-up in the pressure cylinder prepared for this purpose.

(5) The cylinder 36 (or technically equivalent cylinder) neutralizes the spring 9 during cutting, and during the application of pressure this force is transmitted to the hammer 13 without requiring the use of energy. During the return movement, the cylinder 36 acts as a damping device.

All of the above results in substantial time savings as well as substantial energy savings. This is particularly useful when cutting thick veneer tape.

In order to obtain higher speeds during cutting, the cylinder 28 together with the piston 29 and the lever 30 can be
The bridge 2 is then lowered directly by the rods 32 and 32'. This can be done hydraulically, for example, but
Allows cutting of thicker decorative tape.

It is clear that the invention is not limited to the embodiments given above and that many modifications can be made without departing from the scope of the invention.

[Brief explanation of the drawing]

1 is a schematic representation of the device according to the invention in the rest position, ie the pressure hammer is unlocked and the upper and lower knives are separated from each other; FIG. The tape is still not fixed, and the upper knife at the lowest level cuts the decorative laminate tape between the lower knife and the lower knife at the highest level, and immediately thereafter, the cut is made between the upper knife at the highest level and the lower knife at the lowest level. FIG. 3 is a schematic representation of the device of the invention in position, FIG. 3 is a schematic representation of the device in which the pressing hammer is fixed relative to the bridge of the device and each upper and lower knife is spaced apart from each other; FIG. 5 is a schematic front view of a possible fixing mechanism for the pressure hammer in a position where the pressure hammer is not fixed relative to the bridge, and FIG. 5 is a similar front view in a position where the pressure hammer is fixed relative to the bridge. l... Base plate, 2... Bridge, 3.
4... Lower knife, 5.5'... Decorative board tape, 6.7... Upper knife, 8... Pressing member, 9... Spring, IO... Warping material (pressing beam ), 13... Hammer 14... Press, 19.19'... Fixing arm, 28... Pneumatic cylinder, 31... Eccentric plate 32.32'...
- Arm, 35...Connecting rod, 36...Pneumatic cylinder.

Claims (1)

[Scope of Claims] The distal end of a decorative veneer tape is cut into a sawtooth shape between one or two pairs of upper and lower knives, and then bonded transversely to the distal end of the decorative veneer tape. A sledge for tensioning the tape, the ends of the veneer tape and the adhesive layer are placed thereon and the necessary pressure is applied by the hammers of the reciprocating press, further moving in the vertical direction so that it can be moved relative to the fixed base plate. Apparatus for gluing said distal ends under pressure by means of a pressure beam supported on a flexible bridge, said apparatus comprising: (a) said bridge (2); On the other hand, the hammer (13) of the press is brought into contact with the end of the decorative laminate tape resting on the pressing beam (10) due to the downward movement of the bridge (2), and the adhesive tape is applied onto this end. (b) a lower knife and an upper knife for cutting the decorative laminate tape at different heights so that when the hammer presses the decorative laminate tape to be glued, the upper knife ( 6, 7) the lower and upper knives are adjusted to a height such that they do not touch the lower knives (3, 4); (c) said hammer (13) fixing thereof relative to said bridge (2); (d) a pneumatic cylinder (28) or technically equivalent cylinder (e) for lowering said bridge (2) on the lower knife; A veneer decorative laminate cutting and bonding device characterized by comprising means for neutralizing the pressure generated by a spring. 2. A pneumatic cylinder (14), wherein said means for bringing said hammer (13) into its working position form part of a pneumatic circuit comprising a pneumatic cylinder (28) for lowering said bridge (2); 2. Device according to claim 1, characterized in that it is formed by an or a technically equivalent cylinder. 3. said bridge (2) by the action of two pairs of two arms (32, 32') operatively connected to each other and one of which is driven by a pneumatic cylinder (28);
3. The device according to claim 1, wherein the device is moved up and down together with the fixed base plate. 4. Said pneumatic cylinder (28) acts on an eccentric disc (31) by means of a lever arm, which eccentric disc controls the reciprocating movement of said two arms, in particular arm (32), and the arm (
4. Device according to claim 3, characterized in that an operative connection is obtained between 32) and 32'. 5. a connecting rod (), said operative connection transmitting the action of the eccentric (31) to the eccentric (31) and thereby synchronizing the action of the two arms (32) to the two arms (32');
5. Device according to claim 4, characterized in that it is formed by: 35). 6. The means for fixing said press (14) to said bridge (2) are formed by rotating arms (19) (19') pivotally mounted on said bridge, these rotating arms being connected to rods ( 23) are interconnected by
One of these arms, in particular the rotary arm (19), is moved by an air cylinder, and these arms are connected to the press (19).
6. The device according to claim 1, characterized in that a portion (14'') of 4) is fixed to the bridge (2) during the pressing step. 7. The decorative laminate. Tape (6, 6') is the bridge (2)
The lower knife (3
) and (4), and the decorative laminate tape is held on the spring (9
) is pressed against the lower knives (3) and (4), thereby providing means for neutralizing the pressure of the spring during the cutting action carried out by the upper knife. Apparatus according to one of claims 1 to 6. 8. The connecting rod (35) neutralizes the pressure of the spring (9) and dampens it by returning air from itself into the air circuit of the device when the bridge (2) returns to its starting position. A pneumatic cylinder (3
Claim 6 or 7 characterized in that it is connected to 6).
The device described in any of the above.