JPS6161960B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention includes a disc knife that revolves around a base axis while rotating on its own axis, and a rod-shaped object to be cut is sequentially transported below the base shaft in the axial direction by the disc knife. The present invention relates to a rotary knife type rod-shaped object cutting device that is capable of cutting into predetermined sizes.

In this type of conventional rotary knife-type rod-shaped object cutting device, the rod-shaped object to be cut is intermittently transferred one after another by a predetermined size below the base axis, which is the center of revolution of the disc blade. The object to be cut is sequentially cut by a disk cutter according to the size of each feed, but in this conventional rotary knife-type bar-shaped object cutting device, the object to be cut is transferred intermittently. Therefore, the device for transporting the cut object has to repeatedly move forward and stop, and the feeding speed of the cut object can only be increased to a certain level, making it impossible to meet the demand for higher speeds.

Incidentally, some of the known rotary knife-type bar-shaped object cutting devices, such as those disclosed in Japanese Patent Publication No. 57-43400 or U.S. Pat. A rotary knife-type rod-shaped object cutting device is known that sequentially cuts rod-like objects into predetermined sizes. These known cutting devices are configured to reciprocate in the direction of the revolving base axis while the blade revolves around the base axis in response to the object to be cut that is continuously transported at a predetermined speed. However, although these known cutting devices make it possible to speed up product manufacturing, the entire device has a fixed structure and can only cut pieces of a certain size (for example, 114 mm as an example of toilet paper). Therefore, it was not possible to manufacture multiple types of products with different lengths using a single cutting device. In addition, for roll-shaped toilet paper, 114, 11
0,108,105,103,100, etc., or 230,22 for boxed tissue paper
Various types of products are used, such as 0,210,200 (all in mm), and the known cutting devices listed above (Japanese Patent Publication No. 57-43400, U.S. Patent No. 3,213,731) A dedicated cutting device is required depending on the desired product length.

In view of the above-mentioned problems, the present invention proposes a rotary blade type rod-shaped object cutting device that speeds up product manufacturing and allows manufacturing of several types of products with different lengths with one cutting device. The rotary knife type bar-shaped object cutting device of the present invention has been made for the purpose of: a cutting object transfer device for continuously transporting a rod-shaped object to be cut at a predetermined constant speed; a base shaft rotation device that continuously rotates a base shaft supported above in parallel with the direction of transport of the workpiece to be transported by the workpiece transport device; and a parallelogram-shaped link mechanism; a rotary frame that is rotated around the base shaft and supported in the axial direction of the base shaft like a swinging device; A rotating shaft mounting side end of the rotating frame is attached to a rotating shaft that is driven by a drive device to rotate and is supported so as to be always parallel to the base axis regardless of the swinging posture of the rotating frame. A disk cutter rotation device having a disk cutter attached thereto which acts to cut the object to be cut on the object transfer device when the rotating frame is rotated downward, When the disk blade is rotated and is within the cutting revolution angle range in which it performs a cutting action on the workpiece on the workpiece transport device, the disk blade is moved at a speed at which the workpiece is transported on the workpiece transport device. When the disk blade is displaced in the transport direction of the object to be cut at a constant speed and the disk blade is within a non-cutting revolution angle range in which it does not perform a cutting action on the object to be cut, the disk blade is moved toward the object to be cut. A rotary frame swinging device is provided which acts to swing the base shaft along the axial direction so as to displace it in a direction opposite to the conveying direction, and also responds to changes in the relative speed of the workpiece and the disc blade in the base axis direction. Accordingly, the speed of the disc cutter in the basic axis direction can be adjusted.

Hereinafter, the rotary knife type stick cutting device of the present invention will be explained with reference to two embodiments shown in FIGS. 1 to 10. The rotary knife type of the first embodiment shown in FIGS. The rod-shaped object cutting device is configured for manufacturing roll paper such as toilet paper, and cuts a long rod-shaped object Z (hereinafter, in this embodiment, the object to be cut is referred to as a log) from the upstream side. A chain conveyor-type workpiece transfer device 1 for transferring to the downstream side, a base shaft rotation device 2 for continuously rotating a base shaft 21 supported above the workpiece transfer device 1, and a parallelogram A rotating frame 31 is provided with a link mechanism 32 having a shape, is rotatable around a base shaft 21, and is supported so as to be swingable in the axial direction with respect to the base shaft 21; Each is attached to the base shaft 2
Each rotating shaft 42 rotates while revolving around 1,
Disc knife 43, 4 for cutting log Z into 42
A pair of left and right disk blade rotating devices 4, 4 having a rotary frame 31 attached thereto, and a rotating frame swinging device 5 with a cam device 51 for swinging the rotating frame 31 along the axial direction of the base shaft 21, as will be described later. It further includes a blade polishing device 7 for polishing the blade part 43a of the disc knife 43, and a blade cooling device 8 for cooling the blade part 43a of the disc knife 43. There is.

The workpiece transfer device 1 appropriately decelerates the power from the motor 11 via the reducer 12, and transfers the decelerated power to the sprocket 55, chain 56, sprocket 57, gears 58, 59, etc. on the reducer 12 side. The chain wheel 60 around which the chain conveyor 13 is wound is continuously driven via a power transmission mechanism. In this embodiment, the object transfer device 1 includes a two-way chain conveyor 1.
3 and 13 are installed in parallel and close to each other, so that two rows of logs Z and Z can be continuously transferred at a time. A plurality of roll pressing plates 61, 61... are fixed to this chain conveyor 13 at intervals slightly longer than the entire length of one log Z, and each log Z supplied onto the chain conveyor 13 is The log is transferred downstream in the flow direction (in the direction of arrow M) by the log pushing plate 61. Note that a guide (not shown) for receiving the logs Z is provided above the chain conveyor 13.

The base shaft 21 of the base shaft rotation device 2 is mounted on a fixed bearing 22 at a position spaced upward by a predetermined distance from the chain conveyor 13 of the workpiece transfer device 1 and oriented parallel to the traveling direction of the chain conveyor 13. 22
Supported by. The driving device for the base shaft 21 also serves as the motor 11 for driving the chain conveyor 13, and the base shaft 21 is continuously driven by the motor 11 at the same time as the chain conveyor 13. In the middle part of the base shaft 21, there are two positions appropriately spaced apart from each other in the axial direction.
A total of four bosses 23, 23, . The bosses 23, 23, . . . are for pivotally mounting a rotary frame 31, which will be described next.

The rotating frame 31 has two long rods 33, 33 and 34, 34 arranged on both sides of the base shaft 21, and the longitudinal intermediate portions of the long rods 33, 33, 34, 34 are arranged on both sides of the base shaft 21. Each of the bosses 23, 23... is pivotally connected by an intermediate pivot 35, and each long rod 3
Ends 33a and 34a facing each other across the base shaft 21 in 3 and 34 are connected to end pivots 36 and 3, respectively.
6, 37, 37, and each long rod 33,
34, each two end pivots 36, 36 on the same end side
A parallelogram-shaped link mechanism 32 is constructed between the four long rods 33, 33, 34, 34 and the two bed plates 40, 40 by installing bed plates 40, 40 between the same 37, 37, respectively. Configured with the necessary features. The rotating frame 31 is rotated together with the base shaft 21 by pivoting the long rods 33, 34 to the bosses 23, 23, . , 35, the entire rotating frame 31 can swing in the axial direction of the base shaft 21. In addition, each end pivot 36, 37 on the same end side of the rotating frame 31,
The line connecting 37 always acts parallel to the base axis 21 regardless of the swinging posture of the rotating frame 31 with respect to the base axis 21, and therefore, the line connecting the base plates 40, 40 which are installed on the respective end pivots. is always parallel to the base axis 21. Each of the long rods 33, 33 and 34, 34 on the same side of the base shaft 21 has an intermediate pivot portion (intermediate shaft 35 portion) and an end pivot portion (end pivot portions 36, 37). In between, two reinforcing bars 38, 39 are pivotally mounted on each side by pivots 48, 49 for connecting the long rods (33 and 33 and 34 and 34) on the same side. Each bar 3
A pair of bars 38 and 38 of the bars 8 and 39 located symmetrically with respect to the base shaft 21 serve as operating rods for swinging the rotating frame 31, and one end of the bars 38 and 38 is located on the rear side (upstream side in the log transfer direction). ), and its tip is slid on the cam surface of the cam device 51, as will be described later. Note that rollers 50, 5 are provided at the ends of the extending portions of the bars (operating rods) 38, 38.
0 is attached. The base plate 40 provided at both ends of the rotating frame 31 has a vertical plate 40b having a vertical plane in the direction of the base axis 21 at the front end (downstream side in the log flow direction) of a flat plate 40a parallel to the base axis 21. are doing.

The disc blade rotating devices 4 are installed at symmetrical positions at both ends of the rotating frame 31 with the base shaft 21 in between, so that the balance of the rotating frame 31 is maintained when the base shaft 21 rotates. .

This disk blade rotation device 4 has a flat plate 4 of a base plate 40.
Drive device (motor) 41 supported on the back side of 0a
and a rotating shaft 42 supported by the base plate 40 parallel to the base shaft 21 and rotated by the motor 41.
and a disc cutter 43 attached to the tip of the rotating shaft 42. The disk cutter 43 rotates on its own axis when the rotating shaft 42 is rotated, and also revolves around the base shaft 21 when the base shaft 21 is rotated. is adapted to cut a log Z that is continuously transferred on the object-to-be-cut transfer device 1 when it is turned downward. In this embodiment, since one disc cutter 43 is provided at each end of the rotating frame 31, the base shaft 21
However, in other embodiments, the disc blade rotating device 4 is installed only at one end of the rotating frame 31, and the cutting action is performed twice every time the rotating frame 31 rotates. One cutting action may be performed by rotation. The current to the motor 41 is conducted to the motors 41, 41 through a slip ring 20 provided near one end of the base shaft 21, and further through the inside of the hollow base shaft 21.

The rotating frame swinging device 5 is for displacing the disc knife 43 in the transport direction of the log Z while synchronizing with the transport speed when the disc knife 43 performs a cutting action. This is performed by rotating the rotating frame 31 along the axial direction of the base shaft 21 while rotating the rotating frame 31 together with the base shaft 21.

This rotating frame rocking device 5 is installed upstream of the rotating frame 31 in the log transfer direction, and the rotating frame rocking device 5 has operating rods 38 and 3 provided on the rotating frame 31.
8 A cam device 5 in which driving wheels 50, 50 at the tips can roll.
1 is provided. This cam device 51 is constructed by detachably mounting an annular cam member 53 on a circular mounting base 52 fixed to a fixed bearing 22. The cam member 53 is removably attached to the mounting base 52 by, for example, bolts 54 (FIG. 2), and in this embodiment, the cam member 53 is provided with a bolt to facilitate its removal. I'm splitting it into two. A cam surface 53a of the cam member 53 faces toward the rotating frame 31, and one cam ridge and one cam valley are formed on the cam surface 53a at positions facing each other with the base shaft 21 in between. Also, this cam member 53
When the rotating frame 31 is in the horizontal position as shown in FIG. The roller 50 is connected to the cam surface 33a.
It is positioned so that it rides on the cam mountain.

The rollers 5 of each operating rod 38, 38 of the rotating frame 31
0 and 50 indicate that both rollers 50 and 50 are in contact with the cam member 5 no matter what rotational posture the rotating frame 31 is in.
It is designed to roll on the cam surfaces 53a of No. 3 while maintaining a state in which it is in contact with the cam surfaces 53a at the same time. That is, the operating rods 38, 38 of the rotating frame 31 are always pushed against each other between the rotating frame 31 and the cam surface 53a of the cam member 53, and the rotating frame 31 is aligned in the axial direction of the base shaft 21. I try not to shake it. Note that when one of the rollers 50 is in an upward stroke toward the cam peak of the cam member 53 (or a downward stroke toward the cam valley), the other roller 50 is in a downward stroke toward the cam valley. It is set to be on a downhill trip (or an uphill trip toward Mt. Cam). Therefore, the end of the rotating frame 31 on the roller 50 side during the upward stroke is connected to the pivot shafts 35, 3.
5 as the center, and the rotating frame end side on the opposite side (roller 50 side during the downward stroke) gradually tilts backward (in the direction of arrow N). The disc cutters 43, 43 installed at both ends of the rotating frame 31 are the rotating frame 3.
With the rotation of 1, forward and backward directions (arrow M, N direction)
It is now possible to move forward and backward. In addition, rotating frame 3
1 swings forward or backward, the rotating shaft 42 rotates toward the base shaft 2.
1, the disc cutter 43 is always oriented perpendicular to the base axis 21.

As shown in FIGS. 8 and 9, the cam surface 53a of the cam member 53 is connected to the disk cutter 43 on the downward rotating side.
from a position B (a position rotated downward by an angle of approximately 135 degrees from a position C directly above the base shaft) slightly above the position where the base shaft 21 contacts the log Z, and a position directly below the base shaft 21 (position C), and the log Z. The revolution angle range a (in this embodiment, the revolution angle range is approximately
90° range), the same inclination angle θ
(This straight upward slope is a part that acts to move the disc cutter 43 forward at a constant speed in the transport direction of the log Z, as will be described later. Therefore, in the following, it will be referred to as a cam surface for constant speed advancement.) ),
On the other hand, when the downwardly rotating disc knife 43 passes through the revolution angle range a from the position B to the position D, the other upwardly rotating disc knife 43 revolves within the revolution angle range c (the revolution angle An angle range of approximately 90° from position F to position H, which is symmetrical to range a)
In the range c' corresponding to , a linear downward slope with the same inclination angle θ (this linear downward slope corresponds to the disk cutter 43 moving forward at a constant speed) moves the other disk cutter 43 in the transport direction of the log Z. Since this is a part that acts to cause constant speed backward movement in the opposite direction, it is hereinafter referred to as a constant speed backward movement cam surface part). Also, the cam surface 53
The two cam surface parts (intermediate cam surface parts) b' and d' formed between the cam surface part for constant velocity advancement and the cam surface part for constant velocity retraction in a are the disc blades 43, 43.
The front and rear wheels are formed into a gently curved shape to prevent excessive acceleration from occurring during backward drive.

By setting the shape of the cam surface 53a of the cam member 53 as described above, the rotating frame 31 can be rotated in the direction of arrow R from the horizontal position shown in FIG. 3 (the disc cutter 43 is located at positions A and E). In the revolution angle range a (approximately 90° angle range) in which the downward rotating disc cutter 43 rotates from position B to position D through position C directly below the base shaft 21, the downward rotating disc cutter 43 43 in the log transport direction (direction of arrow M) at a speed equal to the transport speed of the log, during which the cutting action of the logs Z and Z is performed (the disc blade 43 performs the cutting action of the logs Z and Z). Revolution angle range x (8th
) is referred to as the cutting revolution angle range), and in the revolution angle range b in which the disc knife 43 rotates from position D through the lateral position E of the base shaft 21 to the diagonally upper position F, the disc knife 43 moves forward. It becomes possible to smoothly change the direction from the direction (direction of arrow M) to the backward direction (direction of arrow N). The other disk cutter 43 (the disk cutter 43 on the side that rotates upward from the horizontal position of the rotating frame 31) is rotated in the revolution angle ranges c and d, which are symmetrical to the revolution angle ranges a and b, respectively. Disc cutter 43 in revolution angle range a, b
It acts in the opposite direction to that of .

Here, the transport speed of log Z (Smm per minute), the length of one product obtained by cutting log Z (Pmm),
Clarifying the relationship between the rotational speed of the rotating frame 31 (n revolutions per minute), the range a' of the cam surface portion for constant velocity advancement on the cam surface 53a, and the inclination angle θ, the rotation speed of the cam member 53 for constant velocity advancement The range a' of the cam surface portion and its inclination angle θ are determined and selected as follows. That is, the disc cutter 43 is now at an angle y (Fig. 8).
A cutting action is performed on one log Z while the log Z rotates by a distance f (9th
Assuming that the cam member 5 moves forward at a constant speed by
3, the inclination angle θ of the cam surface portion for constant velocity advancement is determined so that the disc cutter 43 can be uniformly advanced by the same length as the distance f within the angular range y' corresponding to the angular range y. , and further so that uniform forward movement (distance e) of the disc knife 43 can be maintained in an angular range x' corresponding to the revolution angle range x required for one disc knife 43 to cut all the rows of logs Z, Z. The height range e' of the cam surface for constant velocity advancement is determined by .

Expressing this mathematically, each disc cutter 43,
While 43 makes one revolution (360°), log Z is a distance of 2P
Therefore, the distance f that the log Z moves forward while cutting one log Z (revolution angle range y) is f=2P×y/360 (1).

Since the cam member 53 has to advance the disk cutter 43 in accordance with the advance of the log Z, the log advance amount f in the angular range y' on the cam surface corresponding to the revolution angle range y of the disk cutter 43. The cam height f′ must be obtained. Therefore, f'∝y'・tanθ...(2) holds, and since f' and y' are equal to or directly proportional to y, respectively, f/y= f'/y'∝tanθ...(3), and from equation (1), f/y=2P/360, so in the end, the relationship is tanθ∝P∝s/n...(4) Inclination angle θ of the constant velocity forward cam surface
is determined.

Next, in the cam member 53, the range to which the entire range (angular range a', height range l') of the cam surface for constant velocity advancement should be determined depends on the transfer speed of the log Z and the cutting speed of one disc blade 43. It is determined by the number of rows of logs Z to be cut (two rows in the illustrated embodiment), etc., and in reality, the range required for the disk cutter 43 to cut all rows of logs Z (angular range in FIG. 9) x′, height range e′).

Regarding the same cutting device, since the number of log rows is usually fixed, the rotation speed n of the rotary frame 31 can be adjusted to accommodate changes in the product length P.
Alternatively, it is sufficient to simply change the transfer speed s of the log Z and change the shape of the constant velocity advancing cam surface portion of the cam member 53 (replace the cam member 53).

A pair of blade polishing devices 7 and a blade cooling device 8 are installed in the vicinity of each of the disc blades 43, 43, and the blade polishing device 7 and blade cooling device 8 are connected to the sliding mechanism of an automatic feeding device 9, which will be described later. It is supported by a stand 10 and brought close to the disc cutter 43 together with the sliding stand 10 at a predetermined rate of advance.

The blade polishing device 7 polishes the blade part 43 of the disk blade 43.
A pair of abrasive bodies 17, 17 are attached to the cutting edge portion 43
The polishing bodies 17, 17 are placed opposite each other in a proper posture from both sides of the disc blade 4 at predetermined time intervals.
He is trying to make it contact intermittently with the blade part 43a of No. 3. Polishing body 17 of this knife polishing device 7
In this embodiment, the single-acting air cylinder 18 (seventh
(see figure) so that it can be moved close to or away from the disc blade part 43a. As shown in FIG. 7, this air cylinder 18 receives pressurized air from a compressed air source 14 through a rotary seal 19 provided concentrically with a switching valve 15 and a base shaft 21.
When the switching valve 15 is in the state shown in FIG.
7 and 17 are spaced apart from the disk blade part 43a so that the polishing action is interrupted;
When the switching valve 15 is switched, the polishing bodies 17, 17 are pressed against the disc blade part 43a to perform a polishing action. Note that the switching of the switching valve 15 is performed intermittently at regular intervals, for example, by a timer or the like.

As shown in FIG. 7, the blade cooling device 8 wraps the disc blade 43 with cooling fluid (cooling air) supplied from a cooling fluid supply source 14 (in this embodiment, the compressed air source is shared). Nozzles 46, 46 provided near the blade portion 43a spray the air toward the disk blade portion 43a. In this embodiment, cooling air is supplied from compressed air source 14 to air line 246.
The air passes through the rotary seal 19, is branched off to each disc blade 43 side, and is blown out from each nozzle 46, 46 toward the vicinity of each disc blade part 43a. In other embodiments, silicon mist may be sprayed simultaneously with cooling air as the blade cooling fluid.

A pair of polishing bodies 17, 17 of the knife polishing device 7
And each nozzle 46, 46 of the blade cooling device 8 is the first
As shown in FIG. 4, the vertical plate 4 of the base plate 40
It is attached to a sliding base 10 that is slidably supported on the base plate 0b. This sliding table 10 has a base plate 40
Two guide rods 6 are installed in front of the vertical plate 40b of
2 and 62, and is supported by a threaded rod 29 of an automatic feeding device 9, which will be described later, in a state where it can slide in the direction toward and away from the disc cutter 43.
That is, the threaded rod 29 is immovable in the direction of the rotational axis of the disc cutter 43 relative to the brackets 63 and 64 formed protruding from the front surface of the vertical base plate 40b, and is rotatable relative to the brackets 63 and 64. On the other hand, a female screw 30 (FIG. 6) that can be screwed into the threaded rod 29 is fixed to the sliding table 10, and by screwing the female screw 30 into the threaded rod 29, The sliding table 10 is supported by the sliding table 10.

The automatic feeding device 9 for feeding the sliding table 10 to the disc cutter 43 side is configured to rotate the threaded rod 29 by being pressed by the threaded rod 29 and the single-acting air cylinder 65 and the air cylinder 65. It is configured to include a ratchet mechanism 66. The ratchet mechanism 66 includes a ratchet 67 fixed to the upper end of the threaded rod 29, and an operation plate 68 to which the rod end of the air cylinder 65 is pivotally attached at one end and a claw piece 69 that engages with the teeth of the ratchet 67 at the other end. It is equipped with The operation plate 68 is pivotally connected to the threaded rod 29 so as to be able to swing around the threaded rod 29. In this automatic feeding device 9, when the single-acting air cylinder 65 is extended, the operating plate 68 is rotated (in the direction of arrow L in FIGS. 4 and 6), and the ratchet 67 is rotated by the claw piece 69 (arrow L). At the same time, the threaded rod 29 is also rotated in the direction of the arrow L, and as a result, the sliding table 10 is fed to the disk cutter 43 side by a predetermined degree of advance. This automatic feeding device 9 has a switching valve 16 (FIG. 7).
Pressurized air from the pressurized air source 14 is switched to the ON state only when the pressurized air cylinder 65 is switched to the ON state.
It is designed to operate by being supplied to the side. still,
The switching valve 16 for the automatic feeding device 9 is operated at predetermined time intervals by a timer or the like.

In the rotary knife type rod-shaped object cutting device of the illustrated embodiment, the log cutting operation is performed as follows. That is,
When power is supplied to the motor 11 which serves as the workpiece transfer device 1 and the base shaft rotation device 2, and the motors 41, 41 for the disc blade rotation devices 4, 4, the chain conveyors 13, 13 of the workpiece transfer device 1 move in the direction of the arrow M. The log Z on the top thereof is transferred in the direction of the arrow M by continuously traveling in the direction at a constant speed, and the base shaft 21 is further rotated so that the disc blades 43, 43 revolve around the base shaft 21 while rotating. When the disc cutter 43 rotates below the base shaft 21, it acts to cut the leading end of the log Z, which is being continuously transported by the chain conveyor 13, by the product size. At the same time that the disc knife 43 that has completed its cutting action moves upward, the disc knife 43 on the opposite side moves to a downward stroke, and the disc knife 43 in the downward stroke moves to the log Z.
The arrow M corresponds to the product dimension in which the log Z is cut by the chain conveyor 13 until it comes into contact with the
direction and the next cutting operation is started. While the log Z is being cut by the disk cutter 43, the log Z is continuously transferred. During the cutting operation, the rotary frame 31 of the disk cutter 43 is swung forward (in the direction of arrow M) by the cam device 51. By being moved, it is displaced toward the forward side at a speed equal to the transport speed of the log Z, and therefore no interaction occurs between the disc cutter 43 and the log Z.

Note that the blade polishing device 7 closes the switching valve 1 at predetermined intervals.
5 is switched, the polishing bodies 17, 17
is automatically brought into contact with the disc blade part 43a, and the disc blade part 43a is automatically polished, so that the disc blade part 43a is maintained in a good condition at all times.

Further, the blade cooling device 8 blows cooling air from the nozzles 46, 46 toward the disc blade part 43a, so as to prevent the disc blade 43 from overheating.

The disc cutter 43 gradually wears out over time and becomes smaller in diameter, but the switching valve 16 is closed at regular intervals.
(Fig. 7) The sliding table 10 is switched to the disk cutter 4.
It is designed to be automatically sent to the 3rd side.

FIG. 10 shows a rotating frame rocking device 5 according to another embodiment of the present invention. The rollers 50, 50 attached to the tips of the operating rods 38, 38 on the other side of the rotating frame 31 are brought into contact with the cam surface 53a while facing outward. The rotating frame rocking device 5 of the embodiment shown in FIG.
It functions in the same manner as the rotating frame rocking device 5 in the embodiment shown in FIGS.

Next, to explain the effects of the rotary knife type rod-like object cutting device of the present invention, the rotary knife type rod-like object cutting device of the present invention continuously transports the workpiece Z and sequentially cuts the workpiece Z according to product size. Since it is configured so that it can be cut, it is possible to speed up the product cutting work, and it is also possible to cut the workpiece Z and the disk blade 43.
The disc cutter 4 responds to changes in relative velocity in the basic axis direction.
Since the speed in the basic axis direction of 3 can be adjusted, it is possible to easily adapt to changes in product length even with the same cutting device, and there is an effect that a wide variety of products can be manufactured.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of a rotary knife-type rod-shaped object cutting device according to an embodiment of the present invention, FIG. 2 is a view taken in the direction of the arrow in FIG. 1, and FIG.
Figure 4 is a plan view of Figure 1, Figure 5 is a plan view of Figure 4, Figure 6 is V1-V1 of Figure 5.
7 is a system diagram of a blade polishing device and a blade cooling device in the rotary blade type rod-shaped object cutting device shown in FIG. FIG. 10, which is an explanatory diagram showing the correlation of the cam devices, is a partial plan view of a rotary knife type bar-shaped object cutting device according to another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Cutting object transfer device, 2... Base rotation device, 4... Disc blade rotation device, 5... Rotating frame rocking device, 7... Blade polishing device, 8... Blade cooling device, 9 ... Automatic feeding device, 10 ... Sliding table,
21... Base shaft, 31... Rotating frame, 32... Link mechanism, 40... Base plate, 41... Drive device, 42...
...Rotating shaft, 43...Disc blade, 51...Cam device, Z...Object to be cut.

Claims (1)

[Claims] 1 A workpiece transporting device 1 that continuously transports a rod-shaped workpiece Z at a predetermined constant speed, and a workpiece that is transported by the workpiece transporting device 1 above the workpiece transporting device 1. The base shaft rotation device 2 continuously rotates the base shaft 21 supported parallel to the transfer direction, and the link mechanism 32 has a parallelogram shape, and is rotated around the base shaft 21 and rotates with respect to the base shaft 21. A rotating frame 31 supported so as to be swingable in its axial direction, and the rotating frame 3
1, and is driven by an appropriate drive device 41 to rotate while revolving around the base shaft 21, and is attached to the base shaft 21 regardless of the swinging posture of the rotating frame 31. An action of cutting the workpiece Z on the workpiece transfer device 1 when the end of the rotary shaft attachment side of the rotary frame 31 pivots downward to the rotary shaft 42 supported so as to be always parallel to the workpiece. A disk cutter rotating device 4 having a disk cutter 43 attached thereto and the rotating frame 31 are connected to the object to be cut on the object transfer device 1 when the disk cutter 43 is pivoted downward. When the cutting revolution angle range is within which the cutting action is performed, the disc blade 43 is displaced in the direction of transporting the workpiece at a speed equal to the transport speed of the workpiece Z on the workpiece transporting device 1, and When the disc knife 43 is within a non-cutting revolution angle range in which it does not perform a cutting action on the workpiece Z, the disc knife 43 is displaced in a direction opposite to the direction in which the workpiece Z is transported. A rotary frame rocking device 5 is provided which acts to swing the base shaft 21 along the axial direction, and the disc knife 43 is rotated in response to changes in the relative speed of the workpiece Z and the disc knife 43 in the base axis direction. 4. A rotary knife type bar-shaped object cutting device characterized in that the speed in the basic axis direction of 43 is adjustable.