JPH05237833A - Multihead circular saw machine for cutting slate - Google Patents

Abstract

PURPOSE:To simultaneously cut the edge of slate and a plurality of strip-like slates having equal width by a method wherein one fixed working unit equipped with one circular saw and a plurality of movable working units along a beam are provided below the beam of a portal and circular saws are held at equal intervals under the condition that the interval is made variable. CONSTITUTION:Below the beam 2 of a frame 1, a working unit A, which is fixed to the fixed position, and a plurality of movable travelling working units B1-B3 are provided along the beam. To the frame 1, a feed shaft 27 is installed parallel to the beam 2. On the peripheral surface of the shaft 27, one row of guide pins 38 are planted in a straight line at equal pitches. Onto the feed shaft 27, the working units B1-B3 are threadingly engaged at equal intervals through nuts C1-C3 having square groove, the lead width of which is 1/3, 2/3 and 3/3 of the interval between the pins 38. By turning the feed shaft fully once under the above-mentioned condition, the working units B1-B3 are moved respectively by 1/3, 2/3 and 3/3 pitches, resulting in allowing to change the interval under the condition that the intervals are kept equal to one another.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circular saw machine for cutting a stone plate, and more particularly to a device for cutting one stone plate into strip-shaped stone materials of equal width by a plurality of circular saws.

[0002]

2. Description of the Related Art A stone plate is usually cut using a circular saw machine. The commonly used circular saw machine for cutting stone plates is 1
It is equipped with a circular saw and a guide plate that determines the cutting width. By relatively moving the side surface of the stone plate along the guide plate, the stone plate is cut to obtain a stone material having a desired width.

[0003]

In the conventional circular saw machine, 1
Since only one strip-shaped stone material is cut out by one cutting operation, when trying to obtain a large number of strip-shaped stone materials, the cutting operation must be repeated many times, and the work is troublesome and the productivity is poor. ..

On the other hand, as a circular saw machine capable of cutting a plurality of places at the same time, a two-head type circular saw machine provided with two circular saws is known. In the conventional two-head circular saw machine, two processing units, each equipped with one circular saw, are screwed on both sides to the right and left threaded screw rods to rotate the screw rods. Thus, the two circular saws are configured to be symmetrically close to or apart from each other. Such a circular saw machine is convenient for processing to remove both ears of a stone plate, but if one stone plate is cut with two circular saws at the same time to obtain three strip-shaped stone materials. It is not practical because it is difficult to adjust the saw width, center the stone plate with the saw plate, and guide the stone plate during cutting. Furthermore, even if such a two-head circular saw is used, it is necessary to perform at least two cutting operations separately from the removal of the ears of the stone plate and the operation of cutting out a plurality of strip-shaped stone materials. Is.

According to the present invention, the ear portion of the stone plate can be removed and a plurality of strip-shaped stone materials can be cut at the same time by one cutting operation, and the stone materials to be cut can be cut while maintaining a constant width relationship. A subject is to obtain a circular saw machine for cutting a stone plate whose width can be easily changed.

[0006]

The circular saw machine of the present invention has a gate-shaped frame 1 having a space 3 for passing a stone plate 4, and below the beam 2 of the frame 1, that is, the space 3 described above. One processing unit A fixed in a fixed position and a plurality of processing units B ₁ to B _n movable along the beam 2 are provided on the ceiling portion of the above. A circular saw 11 is attached to each of the processing units A, B ₁ ... B _n in a direction orthogonal to the beam 2. A feed shaft 27 is mounted on the frame 1 in parallel with the beam 2, and guide pins 38 ... Are planted in a straight line at equal intervals at one location on the feed shaft. .. The feed shaft 27 is rotatably supported by the frame 1 and is rotationally driven by an NC controlled motor 37. The feed shaft 27 has a lead width of the pin 3 described above.
Nuts C ₁ ... C _n having square grooves that are 1 / n, 2 / n ... N / n of the interval P of 8 are screwed at equal intervals, and each nut C ₁ ... C provided movably processing unit B ₁ ··· B _n are connected via a thrust bearing 15 to _n. That is, the nuts C ₁ ... C _n are rotatably supported by the moving processing units B ₁ ... B _{n so as} to be relatively rotatable and axially immovable. Fixed processing unit A
The movable machining units B ₁ ... Which are mounted at equal intervals with the adjacent movable machining units B having the above structure.
It is fixed at a position equal to the distance between B _n .

The circular saw 11 mounted on each processing unit is driven simultaneously by rotating a spline shaft 7 mounted parallel to the beam 2, as shown in the illustrated embodiment.
Alternatively, an electric motor is mounted in each processing unit and individually driven. Further, in the processing units A, B ₁ ... B _n , the lifting mechanism 3 is provided in all or some of them.
It is preferable that the circular saw 11 of the processing unit is provided with a structure capable of moving up and down.

[0008]

In the circular saw machine having the above structure, the feed shaft 27 can be rotated to change the distance between the circular saws 11 while maintaining the relation of equal intervals. That is, when the feed shaft 27 is rotated once, the moving machining unit B ₃ at the outermost end moves by one pitch of the pin 38, and the second moving machining unit B ₂ from the end moves by (n-1) / n pitch. The moving machining unit B ₁ adjacent to the fixed machining unit A moves by 1 / n pitch, and the interval between the circular saws changes by 1 / n pitch. Therefore, if the feed shaft 27 is rotated by NC control to set the interval between the circular saws 11 to a desired width, and the stone plate feeding device 41 that supports the stone plate 4 is driven to move the stone plate 4, the stone plate 4 can be moved by one operation. 4 can be cut into a plurality of strip-shaped stone materials 4a, 4b, 4c, and at the same time, the ears of the stone plate 4 can be cut off by the circular saws of the fixed processing unit A and the moving processing unit B _{3 at} the end. ..

Further, when the processing units A, B ₁ ... B _n are provided so as to be able to move up and down, it is possible to prevent the circular saw from coming into contact with the stone plate 4 by pulling up an unnecessary processing unit, for example, an intermediate portion. It is possible to easily pull up the processing unit to obtain a wide stone material.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described below. FIG. 1 is a front view showing the entire device of the present invention, and FIG. 2 is a plan view.
Reference numeral 1 is a gate-shaped frame, 2 is a beam, 3 is a space for passing the stone plate 4, and 41 is a stone plate feeding device supporting the stone plate 4. The beam 2 is equipped with one fixed processing unit A and three moving processing units B ₁ , B ₂ and B _3, and the fixed processing unit A has its unit frame 5
Is directly fixed to the beam 2, and the moving processing units B ₁ , B ₂ and B ₃ are slidably fitted to the unit frame 5 of the unit frame 5 which is provided in parallel with the beam 2. A clamp device (not shown) that is mounted and clamps the rail 6 to fix the movement is provided. The spline shaft 7 is attached to the bracket 8 on the side surface of the beam 2.
The beam 2 is rotatably mounted by a and 8b.
The belt is driven by the main shaft motor 9 mounted on the belt drive 10. Reference numeral 11 is a circular saw axially attached to each processing unit A, B ₁ to B ₃ .

As shown in FIGS. 3 and 4, the circular saw 11 is mounted on the lower end of the unit frame 5 by bearings 12a and 12b, and a pulley 13 is fixed to the shaft end. On the other hand, each unit frame 5 is formed with a spline receiving portion 14 that extends laterally, and a thrust bearing 15
A pulley 17 is integrally provided on the shaft end of a sleeve 16 rotatably supported by a and 15b. A ball slide 18 is fitted to the sleeve 16, and the ball slide is fitted to the spline shaft 7 so as to be movable in the axial direction and not relatively rotatable. Regarding the fixed processing unit A, the above-described mounting structure of the pulley 17 is not always necessary, and the pulley 17 may be directly fixed to the spline shaft 7. The unit frame 5 is provided with a tension pulley 21 urged by a spring (not shown) in a counterclockwise direction around a circular saw shaft 20 in FIG. 4, and a belt 22 is provided between the pulleys 13 and 17. Is tensioned, and the tension pulley 21 is in contact with the belt to apply tension.

As shown in FIG. 5, a feed shaft 27, whose both ends are rotatably supported by the beam 2 by bearings 26a and 26b, is mounted in parallel with the rail 6 at the intermediate portion of the two rails 3. Each of the moving processing units B ₁ , B ₂ and B ₃ is connected to the feed shaft 27 via nuts C ₁ , C ₂ and C ₃ which will be described later.

The unit frame 5 is divided into a head portion 31 and a base portion 32 that pivotally support the circular saw 11, and an elevating mechanism including a cylinder 33 and a guide 34 is provided between them to elevate the head portion 31. Circular saw 1
1 has a structure that moves up and down. The substantial length of the belt 22 when the circular saw 11 is lowered is substantially extended by retracting the tension pulley 21 in the clockwise direction in FIG.

The feed shaft 27 is driven by a servomotor 37 via a speed reducer 36, and the servomotor 37 is controlled by an NC controller (not shown). On the feed shaft 27, a large number of pins 38 are erected at equal intervals P on a straight line at one location on the circumference thereof. Then, for the moving processing unit B ₁ adjacent to the fixed processing unit A, the lead P
1st nut C ₁ provided with a _single- threaded square screw D ₁ that is / 3
(FIG. 7) is mounted, and the intermediate moving processing unit B ₂ has a second nut C ₂ provided with _two square threads D ₂ so that the lead becomes 2P / 3 (FIG. 8). Is installed. Further, a third nut C ₃ (FIG. 9) provided with a single threaded square screw D ₃ whose lead is aligned with the pin interval P is attached to the moving processing unit B ₃ at the endmost portion. To give an example with specific numerical values, when the diameter of the feed shaft 27 is 60 mm, the pitch P of the pins 38 is 48 mm, and the diameter of the pins 38 is 8 mm, the first nut C ₁ has a lead 16 mm (lead angle 4 .85 °) square thread D ₁ of the single-thread is provided in, the second nut C ₂ square thread D ₂ of Article 2 of the lead 32 mm (lead angle 9.6 °) is provided, the third nut the C ₃ so that the leads 1 Article square thread D ₃ of 48 mm (lead angle 14.2 degrees) is provided.

The nuts C ₁ , C ₂ and C ₃ are screwed together with the square screws D ₁ , D ₂ and D ₃ in a state in which the pin 38 is fitted, and move with the fixed machining unit A. Distance between processing unit B and moving processing unit B ₁ ,
The positions of the moving processing units B ₁ , B ₂ , B ₃ are initially set at the positions where the nuts C ₁ , C ₂ , C ₃ are screwed together so that the intervals between B ₂ and B ₃ are all equal. It When the feed shaft 27 is rotated once by the servo motor 37 with the moving machining units B ₁ , B ₂ , and B ₃ thus initialized, the moving machining unit B ₁ adjacent to the fixed machining unit is moved.
Moves by 1P / 3, the intermediate moving processing unit B ₂ moves by 2P / 3, and the end processing unit B ₃ moves by pin 3
Move by 1 pitch P of 8. Therefore, processing unit B
The moving amounts of ₁ , B ₂ and B ₃ are in the relationship of 1: 2: 3, and the moving processing units B ₁ , B ₂ and B ₃ are the processing units A,
B ₁ , B ₂ , and B ₃ move while maintaining the relationship of equal intervals.

A state in which one stone plate 4 is processed by using the circular saw machine as shown in the embodiment is schematically shown in FIG. 10, and the fixed processing unit A and the movable processing units B ₁ to B _{3 are shown.} by moving the stone 4 with slate feeder 41 drives the circular saw, the fixed machining unit a circular saw and ears 40a slabs 4 by the circular saw of the mobile processing unit B ₃ endmost, 40b excision of Then, the stone plate 4 is cut into three strip-shaped stone materials 4a, 4b, 4c of equal width by the circular saws of the _two processing units B ₁ and B _{2 in} the middle portion.

[0017]

According to the apparatus of the present invention described above,
One stone plate can be cut into multiple strips of equal width with a single operation, and the ears of the stone plate can be cut off at the same time, so the stone plate can be cut accurately and efficiently. It can be carried out.

Further, according to the apparatus of the present invention, the width of the stone material to be cut can be easily changed, and the proportional relation of the moving amounts of the plurality of moving processing units is attached to each moving processing unit. Since it is achieved only by making the leads of No. 1 in a proportional relationship, there is a feature that a circular saw machine equipped with a large number of moving processing units can be easily manufactured.

[Brief description of drawings]

FIG. 1 is a front view of a circular saw machine according to the present invention.

FIG. 2 is a plan view of a circular saw machine according to the present invention.

FIG. 3 is a partially sectional front view of a moving processing unit.

FIG. 4 is a side view of a moving processing unit.

FIG. 5 is a front view of a feed shaft.

FIG. 6 is a partial perspective view of a feed shaft.

FIG. 7 is an explanatory diagram of a thread groove of a first nut.

FIG. 8 is an explanatory diagram of a thread groove of a second nut.

FIG. 9 is an explanatory diagram of a thread groove of a third nut.

FIG. 10 is a plan view schematically showing a cutting operation.

[Explanation of symbols]

 1 frame 2 beam 3 void 4 stone plate 27 feed shaft 33 cylinder 34 guide 38 pin A fixed unit B moving unit C nut D square screw

Claims (2)

[Claims] 1. A fixed machining unit (A) and a beam (2) are provided below a beam (2) of a gate-shaped frame (1) having a space (3) for passing a stone plate (4). And a plurality of movable processing units (B ₁ ) ... (B _n )
Each processing unit (A), (B ₁ ) ... (B _n ) is equipped with one circular saw (11) in the direction orthogonal to the beam (2), and the frame (1) A feed shaft (27) is mounted parallel to the beam (2) on this feed shaft.
Guide pins (38) ... Are implanted in a straight line at regular intervals, and lead widths of the feed shaft (27) are 1 / n, 2 / n ... Nuts (C ₁ ) ... (C _n ) having square screws of n / n are screwed at equal intervals, and each nut is attached to each of the moving machining units (B ₁ ) ... (B _n ). (C ₁ ) ・ ・ ・ (C _n ) are rotatably supported relative to each other and axially immovable, and fixed processing unit (A)
Is a moving processing unit (B ₁ ) ...
(B _n ) A multi-head circular saw machine for cutting stone plates, characterized in that it is fixed at a position equal to the mutual distance. 2. Elevating mechanisms (33), (34) are provided on any of the processing units (A), (B ₁ ) ... (B _n ), and ascend and descend the circular saw (11) of the processing unit. The multi-head circular saw machine for cutting a stone plate according to claim 1, which has a possible structure.