JPH04246501A - Cutting device of rectangular timber for beam - Google Patents

Abstract

PURPOSE:To make it possible to easily work the end of rectangular timber for beam and improve the working efficiency of the device concerned by a constitution wherein a working cutter means consists of a circular saw machine, a supporting frame, which slidably supports the circular saw machine, and a turn table, which swingably supports the supporting frame. CONSTITUTION:A cutting device 12 consists of a work table 12A, on which a rectangular timber W is placed under the state to be leveled, and a working cutter mechanism 12B, with which the rectangular timber W on the work table 12A is cut. In addition, the rectangular timber W is arranged along a fixed ruler 16. In this case, the working cutter mechanism 12B consists of a circular saw machine 12a, a supporting frame 12b, which slidably supports the circular saw machine 12a, and a turn table 12d, which horizontally holds the supporting frame 12b above the work table 12A through a supporting arm 12c and, at the same time, swingably supports the supporting frame 12b. Further, the tip of the supporting frame 12b supports the work table 12A through a holding fitting 12D. Furthermore, to the supporting frame 12b, guide rails 12e, which guide the circular saw machine 12c back and forth, are laid.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cutting the end faces of square timbers that serve as beams for residential buildings.

0002

2. Description of the Related Art In general, in single-family prefabricated houses and the like, in order to make effective use of the living space, development is underway to use the attic as one living space.

Conventionally, the roof frame of a single-family house has supported the surface materials that make up the roof using roof frame members such as bundles and rafters, but with such a roof frame structure, the space in the attic is There was a problem that it could not be made large and the attic space could not be used effectively.

[0004] Therefore, as a means to solve these problems, the present applicant proposed a roof structure that can make the most effective use of the attic space (Japanese Patent Application No. 2-158).
(See No. 936, “Square Roof,” etc.)

As shown in FIG. 13, this consists of a first beam 1a constructed along the slope of the roof, and a second beam extending approximately horizontally from the upper end of the first beam 1a. A frame A is constructed by combining four bending beams 1 formed by connecting members 1b through gusset plates 1c, and this frame A is assembled on a wall 2 to support a roof panel 3. .

[0006] The roof frame structure using such bent beams 1 has the advantage that the space inside the roof can be widened and the living space can be used effectively.

[0007]

[Problems to be Solved by the Invention] In manufacturing the bending beam 1 used in the above-mentioned roof structure, the following problems remain to be solved in order to butt and adhesively fix two square members. ing.

[0008] In other words, when manufacturing a straight beam, the beam can be formed by simply cutting a single square lumber and finishing its surface, but when manufacturing a bent beam, the roof It is necessary to cut the upper end surface (butt surface) of the first beam material 1a and the butt surface of the second beam material 1b to a predetermined angle in advance, which is constructed along the slope of In particular, since the angles of the abutting surfaces of the beams vary depending on the slope of the roof, processing the beams requires a lot of effort.

The present invention has been proposed in view of the above-mentioned circumstances, and its purpose is to provide a cutting device for beam beams that can easily process the end faces of beams. be.

0010

[Means for Solving the Problems] In order to achieve the above object, the present invention is an apparatus for cutting the end face of a square timber that becomes a beam of a residential building, and the square timber is placed horizontally. The method comprises a processing table, a positioning plate for positioning the square material by bringing the sides of the square material into contact with each other, and a processing cutter means for cutting the square material on the processing table, the processing cutter means comprising:
A circular saw, a support frame that supports the circular saw so that it can slide freely along the surface direction of the saw with the cutting part of the saw blade protruding, and a supporting frame that supports the circular saw above the processing table. and a turntable which is held horizontally via a support arm and which rotatably supports the support frame.

[0011]

[Operation] To process the square timber that will become the beam, place it on the processing table.
The square piece W is placed in a horizontally laid state, and the side part of the square piece is brought into contact with a positioning plate to determine its position on the processing table, and a support frame part for supporting the circular saw machine is set. The support frame is set by rotating the turntable so that the support frame is positioned along the cutting angle of the end face of the square piece.

After the support frame is set, a circular saw is slid along the support frame to cut one end of the square material on the processing table.

After cutting one end of the square timber, preparations are made for cutting the other end of the square timber W in order to cut the other end. This operation is performed by shifting the square timber in its longitudinal direction along the positioning plate until the other end of the square timber faces the processing cutter means, and then resetting the support frame so that it follows the cutting angle of the end face of the square timber. .

Next, when the circular saw is slid along the support frame, the other end of the square material on the processing table is cut.

[0015]

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 12.
This will be explained in detail with reference to .

1 and 2 respectively show an example of a manufacturing line for bent beams to which the beam cutting apparatus according to the present invention is applied, and FIG. 1 is a plan view of the manufacturing line, and FIG. The figure is a side view of the production line.

In these figures, reference numeral 10 denotes a guide track for conveying the beam material, 11 denotes a square timber jaw notch means for forming a right-angled notch (jaw notch) in the corner of the square timber W that will become the beam material, and 12 1 is a beam cutting device according to the present invention;
3 is a mounting table on which the second beam 1b is placed; 14 is a tilting means for vertically moving one end of the second mounting table 13 to tilt the mounting table 13; 15 is a mounting table for the first beam 1a and the second beam 1b; beam material 1b
It is a joining means for joining.

Note that the guide track 10 includes beam members 1a, 1
b constitutes a conveyance path for conveying the beam material from the cutter means 12 for cutting processing toward the mounting table 13, and more specifically, it is a first guide track for conveying the beam material in a horizontally laid state. 10A, and a second guide track 10B that is arranged parallel to the first guide track 10A and transports the beam material vertically toward the mounting table 13.

The first and second guide tracks 10A and 10B each have a structure in which rolling rollers 10b are arranged inside a support frame portion 10a at a plurality of intervals along the longitudinal direction of the tracks. It becomes.

Note that the first and second guide tracks 10A
, 10B have the same basic configuration except for their widths, and a sliding plate 10c is provided between these two tracks 10A and 10B so that the beam material can be slid and transferred. At the same time, a positioning plate (fixed ruler) is provided on the first track 10A to set the position of the square timber by coming into contact with the side surface of the square timber.
16 are provided along the track 10A.

[0021] A table (first mounting table) on which the first beam 1a is placed is provided at the unloading portion of the second guide track 10B.
10C is attached, and consideration is given so that the first beam 1a does not shift when the first beam 1a and the second beam 1b are joined.

The mounting table 10C is mainly composed of an upper plate 10d and a support 10e that supports the upper plate 10d (see FIG. 8).

Further, as shown in FIGS. 3 and 4, the positioning plate 16 is formed with a positioning groove 16a that reaches the top surface of the positioning plate and opens, into which an abutment ruler 16b is fitted and a square piece is cut. The position of the end face can be set.

[0024]The beam beam cutting device 12 is as follows:
As shown in detail in FIGS. 3 and 4, it is equipped with a processing table 12A on which the square material W is placed in a horizontally laid state, and a processing cutter mechanism 12B for cutting the square material W on the processing table 12A. The square material W is placed along the fixed ruler 16, the square material W is restrained on the processing table 12A by a clamp mechanism (not shown), and the square material W is cut at a desired angle by the circular saw 12a of the cutter mechanism 12B. This is the basic structure for cutting.

To explain more specifically, the processing cutter mechanism 12B includes a circular saw machine 12a and a circular saw machine 12a.
A support frame part 12 that supports the circular saw machine 12a so as to be slidable along the surface direction of the saw teeth with the cutting part of the saw teeth protruding.
b, and a turntable 12d that holds the support frame portion 12b horizontally above the processing table 12A via a support arm 12c and supports the support frame portion 12c in a rotatable manner.

As shown in FIG. 3, the support frame portion 12b has its tip supported on the processing table 12A via a holding metal fitting 12D, and a circular saw 12a is mounted on the support frame portion 12b. A guide rail 12e is installed to guide the vehicle back and forth.

Note that the tip of the support frame portion 12b is connected to the processing table 12.
The holding hardware 12D supported on A is a U-shaped support portion 1 that supports the support frame portion 12b movably in its longitudinal direction.
2f, a slider 12h that supports this support part 12f so as to be able to rotate around a rotation axis 12g, and this slider 1.
2h along the longitudinal direction of the processing table 12A, and the slider 12h is configured by inserting the slider into a positioning hole 12k of a positioning plate 12j disposed along the guide rail 12i. 1
By inserting the positioning pin attached to 2h,
Its position can be fixed.

Now, as shown in FIG. 4, the support arm 12c is bent in an L-shape as a whole, and one end of the support arm 12c is connected to the turntable 1.
2d via a rotation shaft 12k, and the rotation shaft 1
2k as the center, as shown by arrow A in the figure, so that it can rotate vertically.

Furthermore, at both ends of the rotation shaft 12k of the support arm 12c, there are pneumatic cylinders 1 for vertically moving the rotation shaft 12k.
2m is attached, and the rotation shaft 12k can be moved up and down by the operation of the pneumatic cylinder 12m, and the support frame portion 12b integrated with the support arm 12c can be moved up and down. With such a configuration, the square material W on the processing table 12A can be restrained by the support frame portion 12b.

On the other hand, the turntable 12d is slidably disposed on a guide rail 12n provided at the bottom of the processing table 12A, and the turntable 12d is slidably disposed on a guide rail 12n provided at the bottom of the processing table 12A.
It is configured so that it can be moved forward and backward by 2p.

Next, detailed descriptions of other members constituting the bending beam manufacturing line to which this cutting device 12 is applied are as follows.

First, the jaw notch means 11 for forming a right-angled notch (jaw notch) in the corner of the square timber W serving as a beam material is used to cut the square timber W horizontally, as shown in detail in FIGS. 5 to 7. A processing table 20 that is placed in a tilted state, a clamp mechanism 21 that holds the top surface of the square material W placed on the processing table 20 and restrains the position of the square material W, and a process that cuts the square material on the processing table 20. The cutter mechanism 22 is basically configured.

The processing table 20 includes a disk-shaped base 20a, a disk-shaped bottom plate 20b rotatably supported on the base 20a, and a square material W supported on the bottom plate 20b via legs 20c. The main components are an upper plate 20d and a positioning mechanism 23 that positions the bottom plate 20b on the base 20a.

Note that the upper plate 20d is formed with a U-shaped cutout 20e that reaches the side and opens.
The processing cutter means 22 is inserted along the notch 20e.
is now moving.

The base 20a serves as an installation part for the processing table 20, and a positioning plate 20g, which is formed entirely in a disk shape and has a positioning hole 20f on its outer periphery for setting the position of the upper plate 20d, is attached to the base 20a. are arranged at equal intervals in the circumferential direction.

The bottom plate 20b is rotatably assembled to the base plate 20a, and a rail 20h for guiding the machining cutter mechanism 22 in the radial direction is attached to the upper surface of the bottom plate 20b.

As shown in detail in FIG. 8, the upper plate 20d is provided with a positioning rod 23a that determines the position of the upper plate 20d by fitting its lower end into the positioning hole 20f of the base 20a. By operating the positioning rod 23a up and down, the positioning rod 23a and the positioning hole 20f can be engaged and disengaged from each other.

In the embodiment, the positioning rod 23
A and a positioning plate 20g with a positioning hole 20f constitute a positioning mechanism 23 that positions the bottom plate 20b on the base 20a.

[0039] The clamp mechanism 21 consists of a gate-shaped frame 21a installed on the top plate 20d, a pressing part 21b suspended from the frame 21a via a link mechanism 24, and a pressing part 21b. A pair of left and right cylinder mechanisms 21c that move the portion 21b up and down, and this cylinder mechanism 21c.
The link mechanism 24 mainly includes a pair of left and right arm portions 24a whose middle portions are hinged, and these arm portions 2.
It is mainly composed of a connecting member 24b that connects the hinge portion of 4a.

The processing cutter mechanism 22 includes a band saw unit 22A, and a processing table 2 that connects the band saw unit 22A to the processing table 2.
Guide mechanism 2 slidably supported on the bottom plate 20b of 0
It is composed of 2B.

[0041] The band saw unit 22A has a main body 22.
A band saw 22b is provided vertically in the cutting space of a, and is mounted integrally on a traveling carriage 22c that constitutes a guide mechanism 22B, and the traveling carriage 22c
is adapted to move back and forth on a guide rail 20h laid on the bottom plate 20b. In the embodiment, a guide mechanism 22B is constituted by the traveling carriage 22c and the guide rail 20h.

Next, the mounting table 13 is used to place the second beam member 1b, and as shown in FIGS. 1 and 2, it is basically a rectangular frame-shaped structure similar to the second guide track 10B. The rolling roller 13b is installed inside the support frame 13a of the support frame 13a.
It has a structure in which a plurality of beam members 1b are arranged at intervals along the longitudinal direction, and when the second beam members 1b are placed on both sides of the support frame portion 13a, the second beam members 1b are placed on both sides of the support frame portion 13a. Mounting table 13
A support rod 13c is provided upright to prevent it from falling.

Note that a table 13A on which the second beam 1b is placed is attached to the loading side of the second mounting table 13, and a table 13A is attached to the loading side of the second guide track 10B via the hinge portion 30. It is rotatably connected to the table 10C (see FIG. 8).

Further, as shown in FIGS. 9 and 10, the tilting means 14 for tilting the mounting table 13 tilts the substrate 40a
A frame 40 with three columns 40b erected thereon and an upper plate 40c attached on these columns 40b, and this frame 40.
The mounting table 13 is inserted into the front column 40b of the
an elevator 42 hinged to via a rotation shaft 41;
A cylinder device 44 that moves the elevator 42 up and down via a first suspension chain 43, and a balancer 46 that is connected to one end of the mounting table 13 via a second suspension chain 45 and balances the mounting table 13. It is mainly composed of.

The first suspension chain 43 has one end attached to the upper end of the elevator 42, and the other end connected to the rod of the cylinder device 44 via a pulley 47 provided on the upper plate 40c of the frame 40. It is wound around a pulley 48 attached to the tip and attached to the upper plate 40c.

The second suspension chain 43 has one end attached to the mounting table 13 and the upper plate 4
Balancer 46 via pulley 49 provided at 0c
is attached to.

[0047] Here, I would like to add a supplementary explanation to the elevator 42. It consists of a rectangular cylindrical main body 42a that is inserted into the outer periphery of the column 40b, an upper end of the main body 42a, and a The bracket 42c is provided at each lower end and has rolling rollers 42b that roll on the columnar body 40b. It has become.

The joining means 15 for joining the first and second beam members 1a and 1b will be explained. This has a structure as shown in FIG. That is, this is a table 1 on which the first and second beam members 1a and 1b are placed, respectively.
It is mainly composed of a nailer 15b supported on both sides of 0C and 13A via a frame 15a, and the first and second beam members 1a and 1b are directly connected by nailing via a gusset plate 1c. It looks like this.

Next, the operation of the beam cutting apparatus configured as described above will be explained according to the procedure for actually manufacturing a bent beam.

In order to manufacture the bending beam 1 as shown in FIG.
In a state where the square timber W serving as b is laid down horizontally, the square timber W is placed toward the processing table 12A constituting the cutting device 12.

It goes without saying that at this time, the position of the tip of the square piece W must be set by inserting the abutment ruler 16b into the positioning groove 16a of the positioning plate 16.

Next, with the square piece W aligned along the positioning plate 16, the tip of the square piece W is abutted against the abutment ruler 16b, and the square piece W is restrained on the processing table 12A by a clamp mechanism or the like.

After the setting of the square timber W is completed in this manner, the support frame portion 12b that supports the circular saw machine 12a is set.

[0054] This operation is performed by
f is slid on the guide rail 12i via the slider 12h, the support part 12f is fixed so that the support frame part 12b is in a position along the cutting angle of the end face of the square timber W, and the pneumatic cylinder 12m is operated. Then, the turntable 12d may be moved along the guide rail 12n.

By this operation, the support frame portion 12b moves the turntable 1 around the support portion 12f of the holding hardware 12D.
With the movement of 2d, it is swung laterally and set along the cutting angle of the end face of the square timber W.

After setting the support frame portion 12b, the circular saw machine 12a
along the support frame part 12b, and the processing table 12A
Cut one end of the upper square piece W.

After cutting one end of the square piece W, the abutment ruler 16b is removed and preparations are made for cutting the other end of the square piece W, which will become the second beam 1b. This operation
A butting ruler 16b is set on the positioning plate 16 to set the position of the square piece W.
The square timber W is restrained along the positioning plate 16 by the clamp mechanism while the end faces of the square timber W are abutted against each other.

Thereafter, by the same operation as cutting one end of the square material W described above, the support frame portion 1 that supports the circular saw machine 12a is cut.
2b is set, and after setting the support frame portion 12b, the circular saw 12a is slid along the support frame portion 12b to cut the other end of the square material W on the processing table 12A.

In the embodiment, the cutting direction of the circular saw 12a can be easily set by setting the support frame 12b, so the end of the beam can be easily machined. The work efficiency can be improved.

On the other hand, the first beam 1a is similar to the second beam 1b.
After processing, similarly to the second beam material 1b, the square material that will become the first beam material 1a is placed sideways into the cutting device 12 from the square material input port of the guide track 10. is manufactured by the same operation as that for processing the second beam material 1b.

[0061] When forming a jaw notch in the square timber W that will become the first and second beam members 1a and 1b, the following procedure is used.

First, as shown in FIG. 11, the processing table 12A is set so that the band saw 22c faces at a predetermined angle with respect to the longitudinal direction of the square material W. The set of processing table 12A is base 2
The upper plate 20d is rotated on the positioning mechanism 2
3 fixes the upper plate 20d to the base 20a.

Next, the square material W is placed on the processing table 12A of the cutting device 12 and the upper plate 20d of the processing table 20 constituting the jaw notch means 11 so as to span each other, as shown in FIG. The square timber W is fixed on a table with one end of the square timber W protruding from the notch 20e of the upper plate 20d.

[0064] To fix the square material W, the clamp mechanism 21 of the processing table 20 is operated, and the cylinder mechanism 21c is driven to push the pressing portion 21b, thereby clamping the square material W on the processing table 12A. With the square material W restrained in this way, the band saw unit 22A is operated, and the band saw unit 22A is moved as shown in FIG.
1 Move as shown by arrow A to make a cut X in the square timber W.

After making the cut X in the square material W through the above operations, the upper plate 20d and the base 20a are fixed by the positioning mechanism 23, and the processing table 12A is rotated as shown in FIG. Band saw 2 along the longitudinal direction of the square material W
2b facing the band saw unit 2, as shown in B in the figure.
2A, insert the band saw 22b from the end face of the square timber W toward the cut X of the square timber W, and form a jaw notch in the corner of the square timber W.

[0066] After the beam material is formed by the jaw notch processing and the end processing, the square material W that will become the two beam materials is sent along the first guide track 10A constituting the guide track 10, and The beam is stood vertically at this position, and the second beam 10b is placed on the mounting table 13 as it is. At this time, the first beam 1a is placed upright at the outlet of the second guide track 10B so that its abutted end face faces the abutted end face of the second beam 1b. put.

By the above operations, the two beams 1a and 1b
Once set, the tilting means 14 of the mounting table 13 is operated to raise one end of the mounting table 13, and the second beam 1b placed on the mounting table 13 is tilted.

By this operation, the second beam 1b is lowered by its own weight, and the two beams are set with their end faces abutting each other.

After the first beam material 1a and the second beam material 1b have been butted together, the gusset plates 1c are applied to both sides of the butted portions of these beam materials 1a and 1b, and the nailer 15b of the joining means 15 is pressed. gusset plate 1c by operating
When the beam members are integrated from the outer surface of the beam, a bent beam 1 having a bent part is manufactured.

In this production line, the first guide track 1
Insert the square timber into the loading port of 0A in a horizontally laid state, process the end face of the square timber with the circular saw machine 12a of the cutting device 12,
After forming the first and second beam materials and transporting these beam materials along the first guide track 10A and the second guide track 10B, the second beam material is placed on the mounting table 13 and the tilting means 14, the mounting table 13 is tilted, the two beam materials are butted against each other, and the two beam materials are joined by the joining means 15, so that a bent beam having a bent middle can be easily manufactured along a line in a well-procedure manner. It is possible to achieve excellent effects such as improving workability during manufacturing and improving applicability to industrialization of bending beam manufacturing.

[0071] Furthermore, by placing the second beam 1b on the mounting table 13 and tilting the mounting table 13 by the tilting means 14,
Because it is possible to butt two beams together with high precision,
It also has the advantage that it is possible to mechanize the work of butting together square timbers that have a large weight, and that the accuracy of the butt parts can be improved.

Furthermore, in the embodiment, since the angle of inclination of the mounting table 13 can be easily changed by the inclination means 14, it is possible to easily change the angle of inclination of the mounting table 13. However, there is also an effect that the first beam material and the second beam material can be easily joined at the position of the mounting table 13.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that the design of members can be changed without departing from the gist of the invention.

[0074]

[Effects of the Invention] As explained above, the present invention is an apparatus for cutting the end face of a square timber that becomes a beam of a residential building.
It is equipped with a processing table on which a square timber is placed in a state where it is laid down, a positioning plate for positioning the square timber by abutting the sides of the square timber, and a processing cutter means for cutting the square timber on the processing bench, The processing cutter means includes a circular saw, a support frame that supports the circular saw so as to be slidable along the surface direction of the saw teeth with the cutting portion of the saw teeth of the circular saw protruding, and this support The set of support frames is characterized by being comprised of a turntable that holds the frame horizontally above the processing table via a support arm and supports the support frame in a rotatable manner. By doing this, the cutting direction of the circular saw can be easily set, the end of the beam can be easily processed, and the work efficiency can be improved.

Furthermore, even if the angles of the butting surfaces of the beams vary depending on the slope of the roof, much effort is not required to process the beams, and the end faces of the beams can be easily processed. It is possible to provide an effective and suitable cutting device for beam beams.

[Brief explanation of the drawing]

FIG. 1 is a plan view schematically showing a manufacturing line for bent beams to which a cutting device according to an embodiment is applied.

FIG. 2 is a side view schematically showing a bending beam manufacturing line to which a cutting device according to an embodiment is applied.

FIG. 3 is a perspective view of the cutting device viewed from above.

FIG. 4 is a perspective view of the cutting device seen from the side.

FIG. 5 is a perspective view of a square timber jaw cutting means.

FIG. 6 is a perspective view showing the main parts of the square timber jaw cutting means.

FIG. 7 is a front view of the square timber jaw cutting means.

FIG. 8 is a side view showing how the beams placed on the mounting table are joined.

FIG. 9 is a side view of the tilting means.

FIG. 10 is a perspective view of the tilting means.

FIG. 11 is a plan view showing a process of notching jaws in a square timber.

FIG. 12 is a plan view showing a process of notching jaws in a square timber.

FIG. 13 is a perspective view of a bending beam shown to explain the prior art.

[Explanation of symbols]

10 Guide track 10A First guide orbit 10B Second guide orbit 11 Square timber jaw notch means 12. Cutting equipment for beam beams 12A processing table 12B Processing cutter mechanism 12a Circular saw 12b Support frame 12c Support arm 12d turntable 13　　　　Placement stand 14　　　　　　　　　　　　Tilt means 15. Joining means

Claims (1)

[Claims] Claim 1: An apparatus for cutting the end faces of square timbers that will become beams for residential buildings, comprising: a processing table on which the square timbers are placed horizontally; and a processing table that positions the square timbers by bringing the sides of the timbers into contact with each other. and a processing cutter means for cutting the square material on the processing table, the processing cutter means comprising:
A circular saw, a support frame that supports the circular saw so that it can slide freely along the surface direction of the saw with the cutting part of the saw blade protruding, and a supporting frame that supports the circular saw above the processing table. 1. An apparatus for cutting a square beam beam, comprising: a turntable which is held horizontally via a support arm, and a turntable which rotatably supports a support frame portion.