JPH09201803A - Device for supporting continuous finger jointer material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for supporting a continuous finger jointer with the capability to cut a finger joint with a large finger length and a wide space between finger without any inconvenience. SOLUTION: A material supporting mechanism 17 is arranged below a material to be cut (a) firmly held by a finger jointer, then the lower face of the material to be cut (a) is supported by the material supporting mechanism 17 when a finger joint for the material to be cur (a) is cut using a cutter 15, and the material supporting mechanism 17 is parked when applying a paste to the finger joint by a pasting roll 16. Thus the paste is prevented from sticking to the cutter 15 to avoid the deterioration of a cutting function.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, in order to connect short timbers to long timbers, cuts finger joints on the wood mouth surface, glues the joints, and then the finger joints. The present invention relates to a material support device that supports a lower surface side of a processed portion when processing a finger joint on a material to be cut in a continuous finger joint for press fitting and connection.

[0002]

2. Description of the Related Art A continuous finger jointer has a cutter head equipped with a cutter and a sizing roll so as to reciprocate up and down, and is a cutter that rotates on the ostium surface of a material held by a clamping device. After cutting the finger joints of, the glue joints are glued to the finger joints, and then the front and rear materials to be cut are made to approach each other in the length direction, and the finger joints are press-bonded to each other to lengthen the short timber. It has a structure that connects to shaku wood.

In the continuous finger joint as described above, when the finger joint is cut by the cutter, it passes while applying a pressing force to the end of the material to be cut. When the length is short and the distance between the fingers is narrow, the pressing force applied to the material to be cut is small, so there is no particular problem even if the lower surface side of the material to be cut is not supported.

[0004]

By the way, the shape of the finger joint adopted for producing the large cross-sectional area structural material is such that a finger having a long length and a wide finger-to-finger spacing is used. When cutting such finger joints, if the lower surface side of the material to be cut is not supported by the material support plate, there will be a state where the tip of the finger or chip is missing on the surface of the cutter side To do.

In order to prevent the occurrence of such inconvenience,
If the fixed material support plate is used to support the lower surface of the material to be cut, when the glue is applied to the finger joints by the gluing roll, the support plate will also be applied with the glue in the same way. When the cutter passes through the material support plate during the process, glue adheres to the cutting edge of the cutter, which causes troubles that reduce the cutting performance of the cutter.

Therefore, an object of the present invention is to make a material supporting plate that supports the lower surface of a material to be cut away from and move toward and away from the lower surface of the material to be cut, so that glue may adhere to the supporting plate during the gluing process. Another object of the present invention is to provide a material support device that can cut a finger joint having a long finger length and a wide finger-to-finger distance without any trouble, and can prevent the cutting performance of the cutter from deteriorating.

[0007]

In order to solve the above-mentioned problems, the invention of claim 1 uses a cutter that reciprocates a constant stroke to form a finger joint at the end of the material to be cut held by the clamp device. In a continuous finger jointer in which glue is applied to the joint with a gluing roll that also reciprocates a fixed stroke, a material support mechanism is provided below the joint processed portion of the material to be cut held by the clamp. The material support mechanism supports the lower surface of the joint-processed portion during joint processing by the cutter, and retracts to a position where no glue adheres during the gluing process by the gluing roller.

Here, the cutter and the gluing roll are provided on the cutter head which moves up and down. First, the finger joint is cut by the cutter, and then the gluing roll is used to glue the finger joint. The support plate on the upper end performs a combined vertical and forward / backward movement due to the expansion and contraction of the cylinder, supports the lower surface of the work piece by ascending and advancing movements during the cutting process by the cutter, and lowers and retreats movement during the gluing process. It is supposed to separate from the material and to retreat outside from the moving range of the gluing roller.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show the entire structure of a continuous finger joint, in which a first clamping device located upstream in the middle of a line for horizontally supporting a workpiece a and guiding it in the longitudinal direction. 1 and the second clamp device 2 located on the downstream side are installed with an appropriate interval, and the workpiece a from the upper side to the upstream side position of the first clamp 1 and the downstream side position of the second clamp 2 are cut. Feed roller 3 that feeds in the length direction by sandwiching
4 are provided.

The first clamp device 1 is fixed in a straddling manner on the material to be cut a on a movable surface plate 5 which supports the material to be cut a and is movable only in the longitudinal direction of the material a to be cut. The frame 6 is provided,
The material to be cut a is pressed and fixed by the pressing plate 8 of the cylinder 7 provided on the fixed frame 6, and the movable surface plate 5 is moved forward and backward by a constant stroke by the cylinders 9 and 9 arranged on both sides of the transfer line. It is like this.

The second clamp device 2 has a fixed arrangement. A fixed frame 11 is provided on a surface plate 10 supporting a material to be cut a, and a holding plate 13 of a cylinder 12 provided on the fixed frame 11 is used. The material a to be cut is pressed and firmly held.

A cutter head 14 is arranged laterally between the first clamp device 1 and the second clamp device 2 so as to reciprocate up and down by a constant stroke along a guide, using a cylinder or the like as a drive source. The cutter head 14 includes two cutters 15 and 15 and the cutters 15 and 15.
The two gluing rolls 16 and 16 located directly above the
It is mounted so as to protrude between the first clamp device 1 and the second clamp device 2.

As shown in FIGS. 4 and 5, the cutters 15 and 15 have a large number of blades 15 each having an approximately V-shaped cross section on the outer peripheral surface.
a are formed side by side at regular intervals, and are driven to rotate by a motor, as shown in FIG.
The finger joint b having the same shape as that of FIG. 1 is cut, and when moving downward from the rising standby position as shown in FIG. 1, the cutter 15 located on the upstream side cuts the tip portion of the upstream cutting material a. In addition, the cutter 15 located on the downstream side cuts the rear end of the downstream cutting material a.

At the time of cutting the finger joint by the cutters 15 and 15, as shown in FIG. 6, the tip of the workpiece a on the upstream side is predetermined downstream from the end of the moving platen 5 of the first clamping device 1. The rear end of the downstream cutting material a is fixed in a state of protruding by a length, and is fixed in a state of protruding by a predetermined length to the upstream side from the end of the surface plate 10 of the second clamp device 2. The leading and trailing ends of each are cut by the descending cutters 15, 15.

The gluing rolls 16 and 16 are provided for each cutter 1.
Located just above 5, 15 and having the same outer shape as the finger joint b cut by the cutters 15, 15.
When it descends while rotating and passes while contacting the finger joint b, the glue supplied to the outer peripheral surface is applied to the finger joint b.

Material supporting mechanisms 17 and 17 are provided at the lower position on the downstream side of the first clamp device 1 and the lower position on the upstream side of the second clamp device 2, respectively.

The material support mechanism 17 located under the first clamp device 1 is for supporting the lower surface of the tip portion of the upstream cutting material a on which the finger joint b is processed, and the second clamp. The material supporting mechanism 17 located at the lower part of the device 2 is for supporting the lower surface of the rear end part of the downstream side work material a where the finger joint b is processed, and both material supporting mechanisms 17 and 17 have the same structure. , And are arranged symmetrically, the same parts are designated by the same reference numerals.

As shown in FIG. 3, the material supporting mechanisms 17 and 17 are provided with a pair of support rods 19 and 19 between the fixed walls 18 and 18 which are erected in opposite directions, and between the upper ends of the support rods 19 and 19. The material supporting plate 20 is fixed horizontally, and the supporting rod 19,
A cylinder 21 is arranged between the facing surfaces of 19.

The support rods 19, 19 are vertically long, and a rotator 22 pivotally fixed to the outer surface of the lower end of the support rods 19 is fitted in a vertically elongated hole 23 provided in the lower portion of the fixed walls 18, 18 to form an elongated hole 23. It is possible to move up and down within the range and swing about the axis of the trochanter 22.

A shaft 24 is attached to the upper part between the fixed walls 18 at one end.
The other end of the swing arm 25 pivotally fixed by
9 is pivotally connected to a horizontal shaft 26 erected above the upper portion of the cylinder 9, and the supporting rods 19 and 19 are held in an upright posture by a swing arm 25. The lower end of a cylinder 21 in which the upper end of the piston rod is pivotally fixed to the horizontal shaft 26 is supported. Is pivotally connected to a fixing bracket 27 provided below the fixing walls 18, 18.

Therefore, the support rods 19 and 19 and the material support plate 20 attached thereto are moved up and down by the expansion and contraction of the cylinder 21, and the arcuate movement of the swing arm 25 is added during the up and down movement, so that the vertical movement and the swing movement can be achieved. It will be a complex movement.

FIG. 7 shows the state in which the cylinder 21 is contracted and the material supporting plate 20 is in the lowered position.
Is inclined downward toward the support rods 19, 19.

When the cylinder 21 is extended in this state,
As shown in FIG. 6, the material supporting plate 20 rises, and the swing arm 25 rotates upward, so that the swing arm 25 is pushed outward.

As shown in FIG. 6, the material support mechanism 17 on the upstream side.
Is installed in the lower part of the first clamp device 1 so that the supporting plate 20 in the raised position supports the lower surface of the tip of the workpiece a on the upstream side, and the material support mechanism 17 on the downstream side is the material in the raised position. The support plate 20 is installed in the lower part of the second clamp device 2 so as to support the lower surface of the rear end of the workpiece a on the downstream side.

Therefore, when the supporting plates 20 and 20 of both material supporting mechanisms 17 and 17 are lowered due to the contraction of the cylinder 21, as shown in FIG. It will be retreated to the outside of the movement locus of 16.

As shown in FIG. 5, the material supporting plate 20 has comb tooth-shaped irregularities 20a having the same planar shape as the finger joint b formed at the tip end thereof, which causes interference with the blades 15a of the cutters 15, 15. There is no such thing.

The material supporting apparatus of the present invention is constructed as described above, and as shown in FIG. 1, the cutter head 14 stands by at the raised position, and the tip of the upstream cutting material a projects into the moving locus of the cutter 15. , And the rear end of the downstream cutting material a is fixed to the cutter 15 by the first clamp device 1.
When the material supporting mechanisms 17, 17 project into the locus of movement of the cylinder 21 and are firmly held by the second clamp device 2,
Is extended and the material support plate 20 at the upper end corresponds to the work material a
Support the lower surface of the end of the.

In this state, the cutter head 14 descends,
First, the rotary cutters 15 and 15 cut both ends of the material a to be cut a to process the finger joint b.

At this time, the material support plate 20 moves the workpiece a,
Since the lower surface of a is supported, it supports the pressing force applied to the material to be cut a and prevents the surface of the cutter 15 on the slip-out side from being chipped or the tip being chipped.

Therefore, the finger joint b having a long finger length and a wide finger-to-finger distance can be cut without trouble.

The cutters 15 and 15 are attached to the material support plates 20 and 2.
When passing 0 downward, the material support mechanisms 17, 17 on both sides
The cylinder 21 contracts, the material support plate 20 descends, separates from the work pieces a, a, and retreats outward from the movement trajectory of the cutters 15, 15.

After that, the rotating gluing rollers 16 and 16 are rotated.
Is a finger joint b formed on the work piece a, a
To pass through and apply glue to the joint b.

When the gluing roller 16 reaches the lowered position,
In the first clamping device 1, the movable platen 5 moves forward to the downstream side due to the extension of the schilling 7 while the upstream side workpiece a is clamped, and pushes the workpiece a downstream.

As a result, the finger joints b and b of both the upstream and downstream workpieces a and a are pressure-bonded to each other and connected as shown in FIG. 8 (B).

After that, the two clamping devices 1, 2 release the fixation of the work pieces a, a, and the feed materials 3, 4 are actuated to send the connected work material to the downstream side, and the rear end of the work piece a, a When it reaches the side of the clamping device 2, the cutter head 14 returns to the raised position and prepares for the next cutting and gluing.

[0037]

As described above, according to the present invention, the lower surface of the material to be cut whose finger joint is cut by the cutter is supported by the material supporting mechanism, and the supporting mechanism is separated from the material to be cut after passing through the cutter. Since it is retracted to the position where the finger joint is long, the finger joints with long fingers and wide finger spacing can be cut without any hindrance, and the material support mechanism retracts during the gluing process to the finger joints. Since the adhesive does not adhere, it is possible to prevent the inconvenience that the adhesive adheres to the cutting edge of the cutter and the cutting function is deteriorated.

[Brief description of drawings]

FIG. 1 is a front view of a continuous finger joiner.

FIG. 2 is a plan view of the above.

FIG. 3 is an enlarged side view of the material supporting device.

FIG. 4 is a side view showing the relationship between the cutter, the sizing roll, and the material support device.

FIG. 5 is a plan view of the above.

FIG. 6 is a partially longitudinal front view showing a material supporting state of the material supporting device.

FIG. 7 is a partially longitudinal front view showing the same retracted state as above.

FIG. 8A is a plan view of a material to be cut with a finger joint, and FIG. 8B is a plan view showing a connection state of the same.

[Explanation of symbols]

 1 1st clamp device 2 2nd clamp device 3 and 4 Feed roller 14 Cutter head 15 Cutter 16 Gluing roll 17 Material support mechanism 19 Support rod 20 Material support plate 21 Cylinder 25 Swing arm a Work material b Finger joint

Claims (1)

[Claims] 1. A finger joint process is applied to an end of a work material held by a clamp device by a cutter that reciprocates a constant stroke, and glue is applied to the joint by a gluing roll that also reciprocates a constant stroke. In the continuous finger joint, the material support mechanism is provided below the joint processing part of the work piece clamped by the clamp, and this material supporting mechanism supports the lower surface of the joint processing part during the joint processing by the cutter, and the glue roller. A material support device for a continuous finger joiner, characterized in that the material support device is retracted to a position where no glue is adhered during the gluing process by.