JPH11207520A - Running circular saw - Google Patents

Abstract

PROBLEM TO BE SOLVED: To highly accurately cut a work by supporting it in a wide range. SOLUTION: An entire work is supported by a roller conveyor 20, fixed in a specified cutting position by a fixing member 63, and cut by circular saws 80 and 87 in this state. Since the entire work is supported, a thin and easily bent work is kept surely in a flat shape. Also, since the work is fixed, the positional relations of the work with the circular saws 80 and 87 are stable, and good cutting is performed. Further, according to a cutting length, the positions of a movable cutting unit 80 and a movable feeding roll column 25 are automatically adjusted without any interference between the circular saw 80 and a feeding roll 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling circular saw for cutting both edges of a work at the same time.

[0002]

2. Description of the Related Art Conventionally, as a device for obtaining a work of a predetermined size by cutting off both edges of the work at the same time, Japanese Patent Application No. Hei 6 (1994) -108686.
-67367. this is,
While the work is transported forward on a pair of chain conveyors, both side edges of the work protruding outside the two chain conveyors are cut by a pair of cutters. Each of the pair of cutters is provided integrally with the chain conveyor, and when changing the cutting width of the work, one of the chain conveyors and the cutter is moved in a direction of coming and going with respect to the other chain conveyor and the cutter. Adjust the spacing between cutters.

[0003]

In the above-mentioned conventional apparatus,
The space between both chain conveyors supporting the work is
It is necessary to leave a space as an area for moving the chain conveyor when changing the cutting width, so that the chain conveyor supports only the side edges of the work,
The central part of the work has no support at all. Therefore, it cannot be applied when the work is thin and easily bent. In addition, since the cutting is performed while moving the work, there is a disadvantage that the position of the work is likely to be unstable and the cutting accuracy is low. The present invention has been made in view of the above circumstances, and has as its object to enable a workpiece to be cut with high precision while supporting it over a wide range.

[0004]

According to a first aspect of the present invention, there is provided a roller conveyor for feeding a work to a cutting area while supporting the work by a plurality of feed rolls, a fixing mechanism for fixing the work on the roller conveyor, and the roller. A fixed-side cutting mechanism having a circular saw traveling in a direction intersecting with the workpiece feeding direction above the conveyor, and a circular saw traveling in a direction intersecting with the workpiece feeding direction above the roller conveyor, A movable cutting mechanism capable of reciprocating in the direction, a movable cutting mechanism driving means for moving the movable cutting mechanism, and an area corresponding to the movable cutting mechanism in the roller conveyor,
A movable feed roll train that can reciprocate in the feeding direction, a movable feed roll train driving means that drives the movable feed roll train, and a circular saw of the movable cutting mechanism that is predetermined according to the cutting length of the work. The movable side cutting mechanism driving means is controlled so as to move to the cutting position, and the circular saw is positioned between the feed rolls of the movable feed roll row according to the moving position of the movable side cutting mechanism. And control means for controlling the driving means for the movable feed roll row.

According to a second aspect of the present invention, in the first aspect of the present invention, the fixing mechanism fixes the work by pressing the work on the roller conveyor and supporting the work on the feed roll. The control means includes:
The movable feed roll so that a gap of a minimum dimension is secured between the circular saw of the movable side cutting mechanism and the feed roll that is adjacent to the circular saw and supports the work pressed by the fixing mechanism. The configuration is such that the column driving means is controlled. According to a third aspect of the present invention, in the first or second aspect of the present invention, a stopper against which the workpiece is abutted is provided at a forward position of the roller conveyer in the workpiece feeding direction, and the stopper detects the abutting of the workpiece. In this case, a plurality of sensors are arranged in the work width direction.

[0006]

<Operation and effect of the invention><Invention of claim 1> At the time of cutting, the movable cutting mechanism is moved to a predetermined position by the driving means for the movable cutting mechanism according to the cutting length of the work, and the movable feed roll train is moved. The movable feed roll train is moved to a predetermined position corresponding to the moving position of the side cutting mechanism. The moving position of the movable feed roll row at this time is controlled by the control means so that the movable circular saw and the feed roll do not interfere with each other. Then, the work sent to the cutting area by the roller conveyor is fixed on the roller conveyor by the fixing mechanism, and in this state, the circular saws of the cutting mechanism on both the fixed side and the movable side run and cut off both edges of the work,
Thus, a work having a predetermined length can be obtained. According to the present invention, the work can be supported over a wide range by the plurality of feed rolls, and the work is cut in a fixed state, so that the work can be cut with high accuracy. In addition, the position of the movable cutting mechanism and the position of the movable feed roll row can be automatically adjusted according to the cutting length, and interference between the movable circular saw and the feed roll can be avoided.

<Invention of Claim 2> At the time of cutting, the work is pressed down by the fixing mechanism and fixed while being supported by the feed roll, but the work between the circular saw and the feed roll adjacent to the circular saw is performed. Since a gap with a minimum size is secured between the two, the interference between the circular saw and the feed roll can be avoided, and the size of the work that protrudes from the feed roll can be minimized to suppress flapping and perform a favorable cut. <Claim 3
Invention> When a plurality of works are fed in a line at the same time in the width direction, the ends of the works strike the stopper and stop at a predetermined cutting position. At this time, there is a work that does not contact the stopper. If so, the sensor detects this. Thus, it is possible to prevent the cutting from being performed without all the workpieces reaching the predetermined cutting position.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Embodiment 1 of the present invention will be described below with reference to FIGS. First, the outline of the structure of the traveling circular saw machine of the present embodiment and the overall flow of the cutting operation will be described. The lower frame 10 is provided with a roller conveyor 20 including a fixed conveyor 20F on the left side and a movable conveyor 20M on the right side in FIGS. 1 and 3, and the upper frame 11 is provided with a fixed cutting unit located above the fixed conveyor 20F ( A fixed cutting mechanism 85 as a constituent element of the present invention and a movable cutting unit (movable cutting mechanism as a constituent element of the present invention) 70 located above the movable conveyor 20M are provided. The plate-shaped work W is fed from the left side to the right side in FIG. 1 by the roller conveyor 20 and is positioned and fixed. The front edge and the rear edge of the work W in the carrying direction are respectively circular saw 87 of the fixed cutting unit 85. And the circular saw 80 of the movable cutting unit 70, thereby obtaining a product having a predetermined length. The workpiece W (product) after cutting is carried out to the near side (hereinafter, referred to as the front side) in the direction perpendicular to the plane of FIG. Hereinafter, details of each mechanism will be described.

<Roller Conveyor 20> Roller Conveyor 2
0 comprises a fixed conveyor 20F and a movable conveyor 20M. The fixed conveyor 20F is provided with a fixed feed roll row 23 in which a plurality of (seven in the present embodiment) feed rolls 22 are arranged at fixed intervals in a floating control state with respect to a fixed conveyor frame 21 fixed to the lower frame 10. Composed,
The fixed feed roll row 23 is driven at a high speed or a low speed by a well-known drive mechanism (not shown) using a motor, a sprocket, and a chain. On the other hand, the movable conveyor 20
M is provided with a movable feed roll train 25 in which a plurality of (15 in the present embodiment) feed rolls 22 are arranged at regular intervals in a floating state with respect to a movable conveyor frame 24. 25 is also driven at a high speed or at a low speed by a well-known drive mechanism (not shown) using a motor, a sprocket and a chain.

The roller conveyer 20 is provided with a driving means 105 for a row of movable feed rolls for reciprocating the movable conveyer 20M in the work feeding direction. The configuration will be described with reference to FIGS.
The movable conveyor frame 24 supporting the movable feed roll train 25 is movably guided by a left and right guide rail 26 provided on the lower frame 10, and a motor 27, a sprocket 28 and a motor 27 are provided at the right end of the movable conveyor frame 24. A pair of pinions 30 that are driven to rotate using the timing belt 29 are provided, and the pinions 30 are engaged with racks 31 in the left-right direction of the lower frame 10. When the motor 27 is driven, the movable conveyor frame 2
4 moves in the left-right direction, and the movable feed roll row 25 moves relative to the fixed feed roll row 23 in the direction of coming and going. By moving the movable feed roll row 25 in this way, interference between the feed roll 22 and the circular saw 80 of the movable cutting unit 70 is avoided.

Above the entrance (the left end position in FIGS. 1 and 2) of the roller conveyor 20, a plurality of pressing rolls 33 which are raised and lowered by an air cylinder 32 in a width direction and a work W for detecting the work W are provided. A photo sensor 34 is provided. When the photo sensor 34 detects that the leading end of the work W has been set at the entrance of the roller conveyor 20, the presser roll 33 descends and abuts on the upper surface of the work W to regulate its lifting. Above the movable feed roll row 25, there is provided a movable frame 35 capable of moving in the direction along the work loading direction. The movable frame 35 is guided by left and right guide rails 36 provided on the upper frame 11, and as shown in FIG.
The movable frame 35 is provided with a pinion 40 that is rotationally driven using a motor 37, a sprocket 38 and a chain 39, and the pinion 40 is engaged with a rack 42 in the left and right direction of the upper frame 11. When the motor 37 is driven, the movable frame 35 is reciprocated in the left-right direction above the movable feed roll row 25. This movable feed roll row 3
5 is reciprocatingly driven, the movable cutting unit 70
Of the movable-side cutting unit (movable-side cutting mechanism driving means, which is a constituent feature of the present invention) for reciprocating the workpiece in the workpiece feeding direction. At the left end of the movable frame 35, a plurality of pressing rolls 33 that are raised and lowered by the air cylinder 32 are arranged in the width direction.
And a photo sensor 34 for detecting the work W. When the tip of the work W sent by the roller conveyor 20 reaches below the presser roll 33,
This is detected by the photo sensor 34, and the presser roll 33 descends and comes into contact with the upper surface of the work W to regulate its lifting, and the feed speed of the roller conveyor 20 is changed to a low speed.

<Control means 108> The movable feed roll train driving means 105 and the movable cutting unit driving means 106
Is controlled by the control unit 108. The control means 108 of the present embodiment is composed of a computer housed in the control panel 107. In the control means 108, the moving position of the movable cutting unit 70 is set according to the cutting length, and the moving position of the movable feed roll train 25 is set according to the moving position of the movable cutting unit. Thereby, the circular saw 80 on the movable side is connected to the feed roll 2 of the movable feed roll train 25.
As a result, the circular saw 80 and the feed roll 22 are prevented from interfering with each other. In particular, in this embodiment, as shown in FIG. 19, the circular saw 80 and the feed roll 2 located on the same left side as the fixing member 63 with respect to the circular saw 80.
2, for example, the radius of the feed roll 22 is 48 mm
, A gap S of 2 mm is secured. The gap S is formed between the movable cutting unit 70 and the movable feed roll train 25.
It is the smallest dimension in anticipation of the error at the time of movement.
Therefore, the contact between the circular saw 80 and the feed roll 22 is reliably prevented while the amount of the work W protruding from the upper end of the feed roll 22 toward the circular saw 80 is minimized. It should be noted that the support bar 101 is provided in the upper right space of the feed roll 22 in FIG.
May be provided, so that the work W can be supported more reliably.

<Positioning Mechanism in Work Loading Direction> Means for determining the position of the leading end of the fed work W is shown in FIGS.
This will be described with reference to FIG. A pair of male screw rods 4 is attached to a bracket bar 43 suspended from the right end of the movable frame 35.
4 is freely supported only for rotation, and the left ends of both male screw rods 44 are screwed to both ends of the slider 45. The slider 45 is provided with an abutting stopper 46 that extends in a plate shape along the width direction of the work W. Also,
The male screw rod 44 is integrally rotated by a motor (not shown) via a sprocket 47 at the right end thereof and a chain 48, whereby the slider 45 and the abutment stopper 46 are adjusted in the horizontal position. When the position of the abutment stopper 46 is adjusted, the slider 45 is fixed by the handle 49 so that the slider 45 is positioned so as not to move. Butting stopper 46
, Four air cylinders 50 are attached at intervals in the width direction of the work W, and the tips of the detection rods 51 of the air cylinders 50 pass through the cutouts 52 of the abutment stopper 46 and move in the left direction (work (The direction opposite to the loading direction). Each air cylinder 50 detects the position of its piston (not shown) by detecting the position of its piston (not shown).
A piston sensor 102 is provided for detecting that the front end of the first stopper 1 is flush with the front (left side) of the abutment stopper 46.

<Positioning mechanism in the work width direction> Work W
The means for positioning in the width direction (the direction orthogonal to the work loading direction) will be described with reference to FIGS. 8, 13 and 14. FIG. Guide rails 53 are provided along the width direction of the work at the left end position and the substantially center position in the left-right direction of the movable frame 35, and an L-shaped slider 54 is guided on each guide rail 53. A pinion 56 driven by a motor 55 is provided on the upper surface of the slider 54, and the pinion 56 is engaged with a rack 57 provided in parallel with the guide rail 53. Also, the slider 5
A push roll 60 is provided on the side surface of 4 via an elevating body 59 which is raised and lowered by an air cylinder 58. Also, a guide roller 61 (shown in FIG. 2) provided near the left end of the upper frame 11 is provided with a pushing roller 60 having the same mechanism as the pushing roller 60 of the movable frame 35. These pushing rolls 60 always stand by at an upper position deviated from the work transfer area of the roller conveyor 20 to the front side (the right side in FIG. 13), and the work W is positioned in the carrying direction by the abutting stopper 46. After that, the workpiece W is lowered and the work W is pushed back.

A plurality of back stoppers 62 for receiving the work W pushed by the pushing roll 60 are provided on the back side edge (upper edge in FIG. 3) of the roller conveyor 20.
(See FIGS. 3 and 5). The back stopper 62 is raised to a height at which the work W is received by an air cylinder (not shown) at the time of positioning, and is lowered after the positioning to separate from the work W in preparation for the next cutting step. <Fixing Member 63> A means for fixing the workpiece W positioned at a predetermined cutting position by the positioning mechanism will be described with reference to FIGS. 1, 13 and 14. FIG. At a position on the right side of the pressing roll 60 on the center side of the movable frame 35, a fixing member (fixing mechanism, which is a constituent feature of the present invention) 63 having a vertical plate shape along the width direction of the work W is provided with a pair of air. It is provided so as to be able to move up and down by a cylinder 64. Further, also above the fixed feed roll row 23, a fixing member 63 is provided at a position on the guide frame 61 on the left side of the pressing roll 60 so as to be able to move up and down by an air cylinder 64. The fixing member 63 is always at a position retracted above the work W. When fixing the work W, the fixing member 63 is lowered and pressed against the upper surface of the work W, thereby holding the work W in a floating control state.

<Movable Cutting Unit 70> Next, the movable cutting unit 70 for cutting the right edge of the work W above the movable feed roll row 25 will be described with reference to FIGS. At the right end position of the movable frame 35, a unit frame 72 is provided so as to straddle the guide frame 71 and is guided in the width direction of the work W by the guide rail. A pinion 74 driven by a motor 73 is provided on the unit frame 72, and the pinion 74 is engaged with a rack 75 of the guide frame 71, and the movable cutting unit 70 is driven by the motor 73 to move the movable cutting unit 70 in the width direction of the workpiece W ( (The cutting direction by the circular saw 80). The unit frame 72 includes a pair of side plates 72A fitted on the guide rails 76, and an elevating plate 72 which is raised and lowered while being guided by the guide bar 72B with respect to the both side plates 72A.
C, and a rotating shaft 72D integral with the elevating plate 72C via a guide bar 72B.
D is a pulley 7 driven by a motor 77 fixed to a lift plate 72C.
8 and is driven to rotate via a timing belt 79. A circular saw 80 is fixed to the left end of the rotating shaft 72D.
Drives the circular saw 70A to rotate. Further, a rod 82 of an air cylinder 81 fixed to the unit frame 72 is connected to the elevating plate 72C, so that the circular saw 80 is moved up and down with respect to the unit frame 72 moving in the work width direction. . The circular saw 80 is always at a position retracted above the work W, and at the time of cutting, the saw blade of the circular saw 80 reaches a position further below the lower surface of the work W (a position where the work W can be completely cut). Descend to
The circular saw 80 is located near the left side of the fixing member 63, and cuts the work W while traveling along the fixing member 63. Thus, the fixing member 63 and the circular saw 8
By arranging 0 close to each other, flapping of the cutting edge of the work W is prevented as much as possible, and good cutting can be performed.

<Fixed Cutting Unit 85> On the other hand, a fixed cutting unit 85 for cutting the left edge of the work W is provided above the fixed feed roll row 23. The fixed cutting unit 85 is provided on a guide frame 86 (shown in FIG. 2) fixed to the upper frame 11 so as to be movable in the work width direction, and has a symmetric structure with the movable cutting unit 70. The circular saw 8 of the fixed cutting unit 85
7 is a work W while traveling in the work width direction along the fixed member 63 at a position near the left side of the fixed member 63.
Disconnect. Note that other structures are the same as those of the movable cutting unit 70, and thus detailed description is omitted.

<Unloading Mechanism> The roller conveyor 20 is provided with a lift plate 90, a backup pin 91, and a detent pin 92 as a mechanism for unloading the cut product (work W). Lift plate 90 is feed roll 2
The fixed feed roll row 23 is provided with one sheet and the movable feed roll row 25 is provided with four sheets in parallel with the gap between the two.
As shown in FIGS. 17 and 18, the fixed conveyor frame 21 and the movable conveyor frame 24
And a lift plate support 94 guided by the guide rail 93 is provided with a motor 9.
5 driven between the sprockets 96
Both ends of A are fixed. The lift plate support 94 includes
Rear end of the lift plate 90 (left end in FIG. 18)
Are guided by a vertical guide bar 97 and are supported via an air cylinder 98. The lift plate 90 is fed by the air cylinder 98 to the feed roll 22.
Is moved up and down between a position where the work W is lifted higher than the transfer surface and a position slightly lower than the transfer surface. Location (Figure 3
Is shown by a solid line) and the roller conveyor 20 from the front side (FIG. 1).
8 (the right side of FIG. 8) is reciprocated between a carry-out position (shown by a chain line in FIG. 3) that protrudes greatly.

The backup pins 91 are connected to the lift plates 90
And is always on standby at the same height as the upper surface of the lift plate 90. However, when the lift plate 90 lifts the work W and carries it out to the front side, it projects from the lift plate 90. The work W is received from the back side. The detent pins 92 are arranged on the front side edge of the roller conveyor 20, and two are provided on the fixed conveyor frame 21 and three are provided on the movable conveyor frame 24. Each detent pin 92 has a standby position lower than the lift plate 90 when ascending and descending by the air cylinder 99 and the lift plate 9 during ascending and descending.
It is raised and lowered between detent positions higher than zero. When the detent pin 92 is in the detent position, the lift plate 9
0 restricts the work W from being returned to the inside of the roller conveyor 20 by receiving the rear side edge of the work W carried out of the roller conveyor 20. In addition, below the roller conveyor 20, there is provided a cut-piece discharging belt conveyor 100 for discharging the cut pieces on both right and left edges of the work W cut off by the circular saws 80 and 87 (see FIG. 1). ).

<Operation> Next, the cutting process of the traveling circular sawing machine according to the present embodiment will be described with reference to the flowcharts shown in FIGS. First, the cutting length of the work W is input to the control panel 107 (Step S200). Then, the movable cutting unit 70 and the like move together with the movable frame 35 to a predetermined position (step S201), and the distance between the circular saw 80 of the movable cutting unit 70 and the circular saw 87 of the fixed cutting unit 85 is the same as the above-mentioned cutting length. Become. Next, the movable conveyor 20M moves to an appropriate position according to the cutting length (step S202), thereby avoiding interference between the movable circular saw 80 and the movable feed roll row 25. Then, the detection rod 51 of the abutting stopper 46 is advanced by the air cylinder 50 (step S203). After the advance, the inside of the air cylinder 50 is opened to the atmosphere, and the detection rod 51 is set in a state where it can be retracted. Also, the back stopper 62 is raised (step S204), and prepares for positioning in the work width direction.

Next, the tip of the work W is connected to the roller conveyor 2.
A little bit is inserted into the entrance of 0 (the left end in FIG. 1) and set (step S205). Photo sensor 3 on the entrance side
4 detects the tip of the work W (step S20).
6), the presser roll 33 on the entrance side descends and comes into contact with the upper surface of the work W (step S207). Presser roll 33
Conveyor 20F and movable conveyor 20M
Start driving at a high speed (step S208),
Thereby, the work W is initially sent to the back side by the fixed conveyor 20F, and is further sent to the back side by both the fixed conveyor 20F and the movable conveyor 20M. At this time, the work W to be carried in is prevented from flapping in the vertical direction by the pressing roll 33. Thereafter, when the leading end of the work W reaches a position below the pressing roll 33 on the back side, the photo sensor 34 provided on the holding roll 33 detects the leading end of the work W (step S209). Then, the press roll 33 descends and rolls while pressing the upper surface of the work W (step S210).
This prevents the work W from fluttering. Presser roll 3
3, the fixed conveyor 20F and the movable conveyor 2
Both feed speeds of 0M become low (step S21).
1). Then, when the tip end of the work W approaches the abutment stopper 46, the work W is sent further inward while pushing the detection rod 51 that has been advanced.

The tip of the work W is abutting stopper 4
When the detection rod 51 collides with the abutment stopper 46 upon contact with the piston 6, the piston sensor 102 detects this (step S <b> 212), thereby detecting that the workpiece W has been positioned in the feeding direction. Upon detection of the piston sensor 102, the fixed conveyor 20F and the movable conveyor 20M stop (step S213). When the loading of the work W is stopped, the pressing rolls 33 on the entrance side and the back side are both raised to release the suppression of the work W (step S214). Next, the pushing roll 60 descends (Step S215), moves further to the rear side, and presses the workpiece W against the rear stopper 62 (Step S216).
Thereby, the work W is positioned at a predetermined cutting position. Next, both the fixing members 63 on the entrance side and the back side are lowered (step S217), and the work W is fixed immovably. Thereafter, the abutting stopper 46 retreats and separates from the tip of the work W (step S218), and the rear stopper 62
Descends and separates from the rear edge of the work W (step S2).
19), the pushing roll 60 moves back to the front side, moves away from the front edge of the work W, and rises (step S22).
0), the preparation for cutting is completed.

Next, both circular saws 80 and 87 on the fixed side and the movable side are provided.
Is rotated and lowered, and simultaneously cuts off both left and right edges of the work W while traveling in the work width direction (step S221). The cut piece cut off by cutting,
The cut pieces are dropped onto the belt conveyor 100 for unloading the cut pieces and discharged to the outside (step S222). After the cutting, the fixing member 63 is lifted to release the fixing of the work W (Step S).
223). Then, all the lift plates 90 rise at the same time to lift the work W to a position higher than the holding roll (step S224), and the backup pins 91 of each lift plate 90 rise to back up the work W from the back side. The state is reached (step S225). next,
The lift plate 90 moves to the front side with the work W lifted, and carries the work W out of the roller conveyor 20 (step S226). At this time, the rear edge of the work W is located outside the detent pin 92. Thereafter, the detent pin 92 moves up (step S227).
At the same time, the backup pin 91 descends (step S
228), the lift plate 90 moves back to the rear side (step S229). When the lift plate 90 starts returning, the work W is restricted from moving by the rear edge of the work W hitting the detent pin 92, so that the work W separates from the lift plate 90 and cannot return to the roller conveyor 20, so that the lift plate 90 cannot move back. (Step S230). Lift plate 9
The work W dropped from 0 is received and collected by receiving means (not shown). Further, the detent pin 92 descends (Step S231). Thus, the work W
Is completed.

<Effects> As described above, in the traveling circular saw machine of the present embodiment, the workpiece W is supported over the entirety by the roller conveyor 20 in which a plurality of feed rolls 22 are arranged in parallel at the time of cutting. Therefore, even if the work W has a small thickness and is easy to bend, the work W can maintain a flat shape, and thus can perform good cutting. Moreover, since the work W is fixed at the time of cutting, the positional relationship between the circular saw 80 and the work W is stable, and cutting can be performed with high accuracy.

Further, the driving means 10 for the movable feed roll train
5. Movable cutting unit driving means 106 and control means 1
08, the position of the movable cutting unit 70 and the position of the movable feed roll row 25 can be automatically adjusted according to the cutting length of the workpiece W, and the movable circular saw 80 and the feed roll 22 can be automatically adjusted. Can reliably be avoided. In particular, at the time of cutting, the work W is
3 and is fixed in a state of being supported by the feed roll 22, but since a gap S of a minimum dimension is secured between the circular saw 80 and the feed roll 22 adjacent to the circular saw 80, Even if there is an error in the movement of the movable cutting unit 70 or the movable feed roll row 25, the size of the work W protruding from the feed roll 22 is minimized while avoiding interference between the circular saw 80 and the feed roll 22, and the flapping is performed. ,
Good cutting can be performed.

Further, piston sensors 102 for detecting the work are provided at four positions spaced apart in the width direction of the work at the abutment stopper 46 against which the front end of the work W is abutted.
When a plurality of works W divided in the width direction are carried in at the same time, the work W does not form a single plate, but each work W abuts against the abutment stopper 46 (the work W has reached a predetermined position). ) Can be individually detected. Thereby, it is possible to prevent the cutting from being performed without all the workpieces W reaching the predetermined cutting position.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) In the above embodiment, the cut workpiece is discharged in the horizontal direction. However, according to the present invention, the workpiece may be discharged in the direction opposite to the feeding direction. (2) In the above embodiment, the movable cutting unit is arranged forward in the feeding direction of the workpiece, but according to the present invention, the fixed cutting unit may be arranged forward in the feeding direction of the workpiece.

(3) In the above-mentioned embodiment, four
Although three piston sensors are provided, according to the present invention, the number of sensors may be three or less, or five or more, as necessary.

[Brief description of the drawings]

FIG. 1 is an overall front view of a first embodiment.

FIG. 2 is an overall plan view

FIG. 3 is a plan view of a roller conveyor.

FIG. 4 is a partially cutaway front view of a movable conveyor.

FIG. 5 is a partially cutaway plan view of a movable conveyor.

FIG. 6 is a partially cutaway side view of a movable conveyor.

FIG. 7 is a front view of a movable frame.

FIG. 8 is a partially cutaway enlarged front view of a presser roll and a pressing roll.

FIG. 9 is a partially cutaway enlarged side view of a presser roll.

FIG. 10 is a plan view of an abutting stopper.

FIG. 11 is a side view of a butting stopper.

FIG. 12 is an enlarged front view of a partly cut-away portion of a stop stopper.

FIG. 13 is a partially cutaway side view of the fixing member.

FIG. 14 is a partially cutaway front view of the movable cutting unit.

FIG. 15 is a partially cutaway side view of the movable cutting unit.

FIG. 16 is a partially cutaway enlarged side view of the movable cutting unit.

FIG. 17 is a partially cutaway enlarged front view of a lift plate.

FIG. 18 is a partially cutaway enlarged side view of the lift plate.

FIG. 19 is a partially enlarged front view showing a positional relationship between a circular saw and a feed roll.

FIG. 20 is a flowchart showing a cutting process.

FIG. 21 is a flowchart showing a cutting process.

FIG. 22 is a flowchart showing a cutting process.

FIG. 23 is a flowchart showing a cutting process.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 20 ... Roller conveyor 22 ... Feed roll 25 ... Movable feed roll row 46 ... Abutment stopper 63 ... Fixing mechanism (fixing member) 70 ... Movable cutting unit (movable side cutting mechanism) 80 ... Circular saw 85 ... Fixed cutting unit (fixed side) Cutting mechanism) 87: circular saw 102: piston sensor 106: driving means for a movable cutting unit (driving means for a movable cutting mechanism) 105: driving means for a movable feed roll array 108: control means S: gap between circular saw and feed roll W… Work

Claims (3)

[Claims] 1. A roller conveyor for feeding a work to a cutting area while supporting the work by a plurality of feed rolls, a fixing mechanism for fixing the work on the roller conveyor, and intersecting a work feeding direction above the roller conveyor. A fixed-side cutting mechanism having a circular saw that travels in a direction, and a movable-side cutting mechanism that has a circular saw that travels in a direction intersecting with a feeding direction of a workpiece above the roller conveyor and is capable of reciprocating along the feeding direction. A driving means for the movable-side cutting mechanism for moving the movable-side cutting mechanism; and a movable feed roll disposed in an area of the roller conveyor corresponding to the movable-side cutting mechanism and capable of reciprocating in the feeding direction. A row, a movable feed roll row driving means for driving the movable feed roll row, and The movable cutting mechanism driving means is controlled so as to move the circular saw of the moving cutting mechanism to a predetermined cutting position, and the circular saw is moved by the movable feed roll train in accordance with the moving position of the movable cutting mechanism. And a control means for controlling the driving means for the movable feed roll row so as to be located between the feed rolls. 2. The fixing mechanism according to claim 1, wherein the fixing mechanism fixes the work on the roller conveyor by pressing the work on the roller conveyor and supporting the work on the feed roll. The movable feed roll row driving means is controlled such that a gap of a minimum dimension is secured between the saw and the feed roll which is adjacent to the circular saw and supports the work pressed by the fixing mechanism. The traveling circular saw machine according to claim 1, wherein: 3. A stopper against which a work is abutted is provided at a position ahead of the roller conveyor in the work feeding direction, and a plurality of sensors for detecting abutting of the work are provided on the stopper in a line in the work width direction. The traveling circular saw machine according to claim 1 or 2, wherein: