JPH07164304A - Adjusting mechanism for eccentricity and stroke adjusting mechanism for cutter - Google Patents

Abstract

PURPOSE:To provide an adjusting mechanism for eccentricity for autanatically adjusting eccentricity from the shaft center of the rotor of a movable body movably provided on the rotor. CONSTITUTION:Providd are a rotor 10 rotating on a rotating axis 12 as center, a movable body 14 guided by a guide part 16 provided on the rotor 10 and movably provided in the direction crossing with the rotating axis 12 of the rotor 10 at right angles, a shaft center hole 18 punched and provided in the rotating axis 10 of the rotor 10 along its rotating axis, and a shaft 20 inserted in the shaft center hole 18 and rotatably provided with the shaft line of the rotating shaft 12 as center. Also provided are a first electromagnetic clutch 24 interruptably connecting the rotor 10 to the shaft 20 with the shaft 20 rotated with the rotor 10, and a worm gear 36 and a worm wheel 38 for transforming turning force for relatively rotating the rotor 10 and the shaft 20 into driving force for moving the movable body 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an eccentricity adjusting mechanism and a stroke adjusting mechanism of a cutting machine.

[0002]

2. Description of the Related Art In a cutting machine in which a cutting blade is pressed against a work such as a hard and brittle material, an abrasive is interposed, and the cutting blade is reciprocally moved to cut the work, the cutting blade is worn out. It is necessary to adjust the stroke of the reciprocating motion of the blade, and a stroke adjusting mechanism is provided. Conventionally, as a cutting machine having such a stroke adjusting mechanism, there is a cutting machine as shown in FIGS. 4 and 5. 4 is a front view of the cutting machine, and FIG. 5 is a plan view of the cutting machine of FIG.

Reference numeral 70 denotes a flywheel, which is a rotating body rotated by a motor 72 via a belt 71. 7
Reference numeral 3 denotes a blade frame, in which cutting blades (hereinafter referred to as blades 74) and spacers are alternately superposed and fixed, and a plurality of blades 74 are stretched in parallel. 75 is a rail, and a blade frame 73
A guide member is configured to reciprocate in a predetermined range. The blade frame 73 is fixed to a slider 77 that slides on the rail 75. Reference numeral 78 denotes a crank rod, which connects the flywheel 70 and the blade frame 73 so as to convert the rotational movement of the flywheel 70 into the reciprocating movement of the blade frame 73. This crank rod 78
Has one end rotatably attached to the slider 77 and the other end rotatably attached to a crank pin 79 provided on the flywheel 70. The crank pin 79 is mounted at a position eccentric to the rotary shaft center 80 of the flywheel 70 by a predetermined distance, and a crank mechanism is constituted by this. By changing the amount of eccentricity of the crank pin 79 from the center of rotation, the stroke of reciprocation of the blade frame 73 can be changed.

Reference numeral 81 is a slide base, which is vertically movable along a guide shaft 82 fixed to the base. A work 84 is held by a work holder 83 provided at the upper end of the slide base 81. In FIG. 4, the work 84 is in contact with the blade 74 from below with a predetermined pressing force. In order to press the work 84 against the blade 74 as described above, the load of the weight 87 is applied from below the slide base 81 by the lever principle via the balance bar 86 that rotates around the support shaft 85 fixed to the base body. I am letting you. That is, the support shaft 8
5 is the fulcrum, the place where the weight 87 of the balance bar 86 hangs is the power point, and the place where one end of the balance bar 86 abuts the lower surface of the slide base 81 is the action point. The weight 87 is provided so as to be movable along the balance bar 86 by the adjusting unit 88, thereby adjusting the load amount for pushing up the slide base 81 and bringing the work 84 into contact with the blade 74. Also 89
Is a nozzle. From this nozzle 89, a liquid abrasive containing abrasive grains is supplied to the contact portion between the blade 74 and the work 84.

With the multi-blade cutting machine having such a large number of plates 74, it is possible to suitably slice the work 84 into a large number of thin plates. However, in such a cutting machine, each blade 74 (generally a strip steel plate)
Wear out as shown in FIG. The wear of the blade 74 is
The work 84 is pressed against the blade 74, an abrasive is interposed, and the blade 74 is reciprocally moved to perform cutting work, which is inevitable. At this time, both end portions 90 of the worn portion of the blade 74 are less likely to be worn, and the wear residual portion is likely to be formed obliquely. When the cutting of the work 84 is continued while the blade 74 is worn as described above, the work 84 hits both ends 90 of the worn portion of the blade 74, so that the force of pushing down the work 84 gradually increases. While the amount of vertical movement caused by the force of pushing down the work 84 and the force of pushing up the work 84 by the load of the weight 87 is small, removal and supply of slurry are effectively performed at the contact portion between the blade 74 and the work 84, This works effectively for cutting the work 84. However, when the vertical movement of the work 84 becomes large, an impact force acts on the work 84, which causes deterioration of cutting accuracy, chipping, cracks, and the like.

Therefore, it is necessary to change the stroke of the blade frame 73 stepwise (decrease gradually) as the cutting of the work 84 progresses. Conventionally, the mounting position of the crank pin 79 mounted on the flywheel 70 is manually changed to change the stroke of the blade frame 73. That is, the flywheel 70 is provided with a large number of screw portions at various distances from the rotation axis, and a screw portion corresponding to a desired stroke is selected from the large number of screw portions, and the crankpin is attached to the screw portion. Screw 79 together. In this way, as the cutting of the work 84 progresses, the stroke of the blade frame 73 is periodically reduced in stages, and the work 84 due to the abrasion of the blade 74 as described above is regularly performed.
It prevents the deterioration of cutting accuracy and the occurrence of chipping and cracks.

[0007]

However, the stroke adjusting mechanism of the conventional cutting machine described above has the following problems because the stroke is manually adjusted. In the stroke adjusting operation, the rotation of the flywheel 70 is stopped, the crank pin 79 is removed together with the crank rod 78 from the threaded portion of the flywheel 70, and screwed and attached to another predetermined threaded portion. This stroke adjustment needs to be performed stepwise and regularly, and it requires manpower for adjustment,
There is a problem that loss time occurs. Further, since the person also manages the determination of the stroke adjustment time, there are cases where the stroke adjustment cannot be performed on time. There is a problem that the administrator is burdened when the stroke is adjusted at night and on holidays.

Further, not only the cutting machine as described above but also the reciprocating mechanism for converting a rotary motion into a reciprocating motion generally requires the above-mentioned work even when adjusting the stroke of the reciprocating motion. There was a problem that it was complicated. Therefore, conventionally, with respect to the rotation axis of the rotating body,
It has been desired to develop a mechanism capable of automatically adjusting the amount of eccentricity of a member such as the crank pin.

Therefore, an object of the present invention is to determine the amount of eccentricity of a moving body provided movably on the rotating body from the axis of the rotating body,
An object of the present invention is to provide an eccentricity adjustment mechanism that can be automatically adjusted, and a stroke adjustment mechanism of a cutting machine that can automatically perform stroke adjustment using the eccentricity adjustment machine.

[0010]

In order to achieve the above object, the present invention has the following constitution. That is, the eccentricity adjusting mechanism of the present invention includes a rotating body that rotates about a rotating shaft,
A moving body which is guided by a guide portion provided on the rotating body and is movable in a direction orthogonal to the rotation axis of the rotating body;
A shaft hole bored in the rotary shaft of the rotating body along the shaft center thereof, a shaft inserted in the shaft hole and rotatable around the axis of the rotary shaft, An interrupting device that connects the rotating body and the shaft to each other so that the shaft can rotate together with the rotating body, and a drive that moves the moving body with a rotational force that relatively rotates the rotating body and the shaft. And a driving force converting mechanism for converting into a force.

Further, in the above eccentricity adjusting device,
A restricting device that restricts rotation of the shaft so as to restrict rotation of the shaft with the rotating body when the connecting device disconnects the rotating body from the shaft, and the disconnecting device. The device causes the rotating body and the shaft to rotate integrally when the rotating body and the shaft are connected, and rotates the rotating body when the connection between the rotating body and the shaft is released. By providing the shaft, the rotation drive device for moving the moving body to a desired position via the driving force conversion mechanism,
It does not require any other driving device and can have a rational configuration.

Further, in the above eccentricity adjusting device,
The interrupting device is a first electromagnetic clutch that generates an interrupting action by an electromagnet, and the restricting device includes a first belt wheel fixed to the shaft so as to rotate together with the shaft, and a belt for the first belt wheel. When the second belt wheel and the rotating body and the shaft rotate together, the rotation of the second belt wheel is allowed, and when the connection between the rotating body and the shaft is released, By including a second electromagnetic clutch that restricts rotation of the second belt pulley so as to restrict rotation of the shaft with the rotating body,
It is possible to preferably take out the rotational force that relatively rotates the rotating body and the shaft.

Further, in the above eccentricity adjusting device,
The drive force conversion mechanism includes a worm gear provided on the shaft, and a worm wheel that engages with the worm gear and outputs a drive force to move the moving body by rotating the worm gear, thereby reducing the reduction ratio. It is possible to take a large amount, and it is possible to suitably convert the rotational movement into a reciprocating movement.

Further, in the above eccentricity adjusting device,
A plurality of non-contact sensors are arranged so that the number of rotations and the direction of rotation of the rotating body can be detected, the limit of the moving amount of the moving body can be managed, and it corresponds to the maximum position and the minimum position where the moving body moves. By disposing the non-contact sensor, the device can be fully automated.

A rotating body that rotates about a rotating shaft, a blade frame in which a plurality of cutting blades are arranged in parallel and stretched, and a guide member that reciprocally guides the blade frame within a predetermined range. A moving body that is guided by a guide portion provided on the rotating body and is movable in a direction orthogonal to the rotation axis of the rotating body, and is connected to the moving body, and rotational movement of the rotating body is performed by the blade. By using the above-described eccentricity adjusting device in the stroke adjusting mechanism of the cutting machine including the crank rod that converts the frame into reciprocating motion, the stroke involved in the reciprocating motion of the blade frame can be appropriately and easily adjusted.

[0016]

According to the eccentricity adjusting mechanism of the present invention, the eccentricity of the moving body can be adjusted by effectively utilizing the rotational force of the relative rotation between the rotating body and the shaft. Therefore, the amount of eccentricity of the moving body can be automatically adjusted without the need for manually attaching and detaching the screw as in the related art.
In addition, if this eccentricity adjustment mechanism is used in a cutting machine,
The stroke required for the reciprocating motion of the blade frame can be automatically adjusted.

Further, when the rotation device and the shaft are connected to each other, the rotation device and the shaft are integrally rotated, and when the connection between the rotation member and the shaft is released, the rotation device and the shaft are integrally rotated. By providing a shaft and a rotary drive device that moves the moving body to a desired position through the driving force conversion mechanism by rotating the body, another drive device for relatively rotating the rotating body and the shaft. It is possible to make a rational configuration without requiring the device and without complicating the device.

Further, by providing a non-contact sensor for detecting the number of rotations and the direction of rotation of the rotating body and a non-contact sensor for managing the limit of the moving amount of the moving body, it is possible to automatically control the adjustment of the eccentricity amount. It can be configured to do. If this is used for the stroke adjusting mechanism of the cutting machine, manpower for the steps from the start-up of the apparatus to the completion of the cutting of the material to be cut becomes unnecessary.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is an explanatory view showing an embodiment of an eccentricity adjusting mechanism according to the present invention. Also, FIG.
FIG. 2 is a plan view illustrating details of a sensor unit of the embodiment of FIG. 1. Reference numeral 10 denotes a rotating body, which is integrally fixed to an end portion of the rotating shaft 12 and rotates about the rotating shaft 12. The rotary shaft 12 is rotatably supported by a base (not shown) of the apparatus via a bearing 13. Reference numeral 14 denotes a moving body, which is guided by a guide portion 16 provided on the rotating body 10 so as to be movable in a direction orthogonal to the rotation axis 12 of the rotating body 10. The moving body 14 is a block-shaped member having a trapezoidal cross section, is fitted in a guide portion 16 formed in a dovetail groove, and is guided so as to be movable in the vertical direction in FIG. In addition, reference numeral 15 is a connecting pin portion, which is used for connecting the moving body 14 in order to connect a crank rod or the like.
Is projected from. Reference numeral 18 denotes a shaft center hole, which is the rotating body 10.
Penetrates into the rotary shaft 12 along the axis thereof.

Reference numeral 20 denotes a shaft, which is inserted into the axial center hole 18 and is rotatably provided around the axis of the rotary shaft 12. The shaft 20 is inserted into a bearing 22 arranged in the shaft hole 18, and is supported so as to be rotatable relative to the rotary shaft 12. Reference numeral 24 denotes a first electromagnetic clutch, which constitutes a connecting / disconnecting device that connects the rotating body 10 and the shaft 20 to each other so that the shaft 20 can rotate together with the rotating body 10. The first electromagnetic clutch 24 produces an intermittent action by the action of an electromagnet. That is,
The disk 24a and the shaft 20 fixed to the rotating shaft 12 side
When the shaft side disk 24b fixed to the side is attracted by the magnetic force, the rotating body 10 and the shaft 20 can be connected.

Reference numeral 26 is a first belt wheel, which is the shaft 20.
It is fixed to the shaft 20 so as to rotate therewith. Two
Numeral 8 is a second belt wheel, and the first belt wheel 26 and the belt 3
It is connected through 0. Reference numeral 32 denotes a second electromagnetic clutch that allows the rotation of the second belt wheel 28 when the rotating body 10 and the shaft 20 rotate together, and when the connection between the rotating body 10 and the shaft 20 is released. The rotation of the second belt wheel 28 is restricted so that the shaft 20 is restricted from rotating with the rotating body 10. That is, when the rotating body 10 and the shaft 20 are disconnected from each other and the disk 32a fixed to the base body (not shown) of the device and the disk 32b fixed to the second belt wheel 28 are attracted by the magnetic force. Is
The rotation of the second belt wheel 28 is blocked, and the rotation of the shaft 20 linked via the belt 30 and the first belt wheel 26 is blocked. In this way, the first belt wheel 26, the second belt wheel 26
The shaft 20 rotates together with the rotating body 10 when the first electromagnetic clutch 24 releases the coupling relationship between the rotating body 10 and the shaft 20 by the belt wheel 28, the belt 30, and the second electromagnetic clutch 32. To regulate
A restriction device that restricts rotation of the shaft 10 is configured.

A V-pulley 34 is fixed to the rotary shaft 12 and rotates integrally with the rotary shaft 12. This V-pulley 34 has a motor 50 (see FIG. 2) via a V-belt 48.
Is connected to. In this way, the V pulley 34, the V belt 48, and the motor 50 constitute a rotary drive device that rotates the rotating body 10. In this rotation drive device, when the rotating body 10 and the shaft 20 are connected, the rotating body 10 and the shaft 20 are integrally rotated by the first electromagnetic clutch 24, and the connection between the rotating body 10 and the shaft 20 is released. At this time, by rotating the rotating body 10 with respect to the shaft 20 fixed by the restricting device, the moving body 14 can be moved to a desired position via a driving force conversion mechanism described later.

Reference numeral 36 denotes a worm gear, which is the shaft 20.
Is provided on one end side of. Reference numeral 38 denotes a worm wheel, which engages with the worm gear 36 and rotates to output a driving force to move the moving body 14. Reference numeral 39 denotes a screw portion, which is formed coaxially and integrally with the worm wheel 38, and is screwed into a female screw threaded through the moving body 14. This screw part 39 is for the worm wheel 3
8 is rotatably provided integrally with 8, but is rotatably supported on the rotating body (see FIG. 3).
When the worm gear 36 rotates relative to the rotating body 10,
The screw portion 39 is rotated via the worm wheel 38. Due to the rotation of the screw portion 39, the moving body 14 is regulated by the guide portion 16, and therefore moves in the direction orthogonal to the rotation shaft 12.

By the gear mechanism and the screw mechanism including the worm gear 36, the worm wheel 38, and the screw portion 39 as described above, a driving force for moving the moving body 14 is generated by rotating the rotating body 10 and the shaft 20 relative to each other. A driving force conversion mechanism for converting into The drive force conversion mechanism is not limited to the worm gear mechanism as described above, but it is needless to say that a gear mechanism including a rack and a pinion, a bevel gear, or the like can be used.

Reference numeral 40 denotes a rotation detecting sensor unit. As shown in FIGS. 1 and 2, two non-contact sensors are used as the rotating disk 3.
5 is arranged along the outer peripheral portion. A large number of recesses 41 are formed in the outer circumference of the rotary disk 35 facing the non-contact sensor. By counting the number of the concave portions 41 with a non-contact sensor, the number of rotations of the rotating body 10 can be detected, and by using two non-contact sensors, the rotation direction can be detected.

Reference numeral 42 denotes a movement amount detecting sensor section, which manages the limit of the movement amount of the moving body 14, so that the outer non-contact sensor 42a and the inner non-contact sensor 42b are connected to the rotating body 10 as shown in FIG. A moving body 14 provided so as to be capable of reciprocating above
The dog 14a provided so as to project from the back surface of the rotary body 10 is disposed so as to face the back surface of the rotating body 10 so that the dog 14a can be detected. That is, the outer non-contact sensor 42a is arranged so as to emit a signal when the moving body 14 reaches the outer limit position, and the inner non-contact sensor 42b reaches the inner limit position of the moving body 14. It is arranged so that a signal can be emitted at that time.

As described above, the rotation detecting sensor portion 40 and the movement amount detecting sensor portion 42 can suitably detect the rotation speed of the rotating body 10 and the eccentric amount of the moving body 14. Therefore, if the information detected by these sensor units is input to the control means (not shown), the rotating body 1
It is possible to automate the management of the rotational speed of 0 and the management of the limit movement position of the moving body 14. If this is used for the stroke adjusting mechanism of the cutting machine, the process from the start of the device to the completion of cutting of the work can be automated.

Next, the case where the eccentricity adjusting mechanism having the above-mentioned structure is used as a stroke adjusting mechanism of a cutting machine will be described. FIG. 3 shows the connecting pin portion 1 projecting from the moving body 14.
5 shows a mechanism in which the crank rod 54 having the narrow window frame 54a is connected to convert the rotational movement of the rotating body 10 into the reciprocating movement of the blade frame 60.

A top 52 is rotatably fitted to the connecting pin portion 15, and the top 52 is fitted in the narrow window frame 54a so that the top 52 can reciprocate (slide) in the narrow window frame 54a. . The moving body 14 is positioned and held in the middle of the screw portion 39 by the action of the eccentricity adjusting mechanism described above. The screw portion 39 is rotatably supported by the bearing portions 10a and 10b fixed to the rotating body 10.
Further, 62 is a rail, and the blade frame 60 is provided so as to be reciprocally movable along the rail 62. With this configuration, the rotating body 10 is rotated and the top 5
While 2 reciprocates within the narrow window frame 54a while rotating around the connecting pin portion 15, the blade frame 60 can be reciprocated with a stroke of a distance twice the eccentric amount of the top 52.

An example of using the stroke adjusting mechanism of this cutting machine will be described below. First, the moving body 14 is moved to a position detected by the non-contact sensor outside the movement amount detection sensor unit 42. With the position as the origin, the rotation detection sensor unit 40 counts the number of rotations of the rotating body 10 and moves the moving body 14 to a desired position. In this way, the moving body 14 can be positioned so that the blade frame 60 of the cutting machine obtains the initial stroke.

In order to move the moving body 14, the connection between the rotary shaft 12 and the shaft 20 by the first electromagnetic clutch 24 is released, and the second electromagnetic clutch 32 is operated so that the shaft 20 does not rotate. Then, the rotating body 10 is rotated by the driving force of the motor 50. At this time, since the worm gear 36 provided at the tip of the shaft 20 is restricted from rotating, the worm gear 36 and the worm wheel 38 rotate relative to each other. As a result, the screw portion 39 provided coaxially with the worm wheel 38 rotates, and the moving body 14 moves. This moving body 14
The movement amount can be managed by detecting the number of rotations of the rotating body 10 by the rotation detecting sensor unit 40. By moving the moving body 14 in this way, the eccentric amount of the connecting pin portion 15 projecting from the moving body 14 and linked to the crank rod 54 can be easily adjusted to the blade frame 60 without manpower. Such a desired stroke can be obtained.

Next, the rotating shaft 12 and the shaft 20 are connected by the first electromagnetic clutch 24, and the second electromagnetic clutch 32 is connected.
The regulation by the above is released and the second belt wheel 28 is made rotatable. In this state, the rotating body 1 is driven by the driving force of the motor 50.
When 0 is rotated, the rotational movement of the rotating body 10 is converted into the reciprocating movement of the blade frame 60, and the work can be cut. At this time, since the rotating body 10 and the shaft 20 rotate integrally, the moving body 14 is held at a predetermined position without moving.

The stroke adjustment is carried out periodically when the rotation speed is detected by the rotation detecting sensor unit 40 and the set rotation speed is reached. That is, when the set number of rotations is counted, the motor 50 is stopped, and the eccentric amount of the connecting pin portion 15 is adjusted and the stroke of the blade frame 60 is adjusted in the same manner as the procedure of moving the moving body 14. Is a predetermined value (stroke is gradually reduced)
Is set to.

By the way, the rotation detecting sensor unit 40 recognizes the number of rotations and the rotating direction of the rotating body 10 and reflects them in the control of the stroke adjusting timing, the stroke adjusting distance and the moving direction of the moving body 14. Further, since the movement amount detection sensor unit 42 is provided with the non-contact sensors 42a and 42b respectively corresponding to the maximum position and the minimum position of the stroke, the stroke limit can be managed.
By using the data detected by the respective sensor units 40 and 42 and controlling the cutting machine through the control device in this way, it is possible to prevent deterioration of the cutting accuracy of the work, occurrence of chipping, cracks, etc. It is possible to completely automate the cutting process of the work except the attachment and detachment to and from the cutting machine, and it is possible to improve the cutting accuracy (quality improvement) and the cutting efficiency. The other configuration of the cutting machine is as described in the section of the related art (see FIGS. 4 and 5).

This eccentricity adjusting machine is not limited to the cutting machine as described above, but can be widely applied to a mechanism for automatically adjusting the eccentricity of a moving body provided movably on a rotating body. Although various embodiments of the present invention have been described above, the present invention is not limited to these embodiments.
Of course, many modifications can be made without departing from the spirit of the invention.

[0036]

According to the eccentricity adjustment mechanism of the present invention, the eccentricity of the moving body can be adjusted by effectively utilizing the rotational force that causes the rotating body and the shaft to rotate relative to each other. For this reason, it is possible to automatically adjust the eccentric amount of the moving body without the need for manually attaching and detaching the screw as in the conventional case. Further, when the rotating body and the shaft are connected, the rotating body and the shaft are integrally rotated, and when the connection between the rotating body and the shaft is released, the rotating body and the shaft are relatively rotated to move the moving body. By providing the rotation drive device for moving the rotor to a desired position, another drive device is not required for relatively rotating the rotating body and the shaft, and the device is not complicated and has a rational configuration. It has a remarkable effect of being able to do. further,
By providing a non-contact sensor that detects the number of rotations and the direction of rotation of the rotating body and a non-contact sensor that manages the limit of the moving amount of the moving body, it is possible to automatically perform the management related to the adjustment of the eccentricity. It becomes possible to set the control device,
It has the remarkable effect of eliminating the need for manpower. If this eccentricity adjusting mechanism is used in a cutting machine, the stroke of the reciprocating motion of the blade frame can be easily adjusted, and the stroke adjusting mechanism can be automated, which is a remarkable effect.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of an eccentricity adjusting mechanism according to the present invention.

FIG. 2 is a plan view illustrating details of a sensor unit of the embodiment of FIG.

FIG. 3 is an explanatory view showing a state in which the embodiment of FIG. 1 is used for a stroke adjusting mechanism of a cutting machine.

FIG. 4 is a front view showing a conventional technique.

FIG. 5 is a plan view showing a conventional technique.

FIG. 6 is an explanatory diagram illustrating a worn state of a blade.

[Explanation of symbols]

 10 Rotating Body 12 Rotating Shaft 14 Moving Body 16 Guide Part 18 Shaft Center Hole 20 Shaft 24 First Electromagnetic Clutch 26 First Belt Wheel 28 Second Belt Wheel 30 Belt 32 Second Electromagnetic Clutch 34 V Pulley 36 Worm Gear 38 Worm Wheel 40 Rotation Sensor unit for detection 42 Sensor unit for movement amount detection 48 V belt 50 Motor 54 Crank rod 60 Blade frame 62 Rail

Front page continued (72) Inventor Yasuo Inada 1650 Kiyono, Matsushiro-cho, Nagano City, Nagano Prefecture Fujikoshi Machinery Industry Co., Ltd. (72) Yoshinobu Nishimoto 1650, Kiyono, Matsushiro-machi, Nagano City, Nagano Prefecture

Claims (10)

[Claims] 1. A rotating body which rotates about a rotating shaft, a moving body which is guided by a guide portion provided on the rotating body and is movable in a direction orthogonal to the rotating axis of the rotating body, A shaft hole bored in the rotary shaft of the rotating body along the shaft center thereof; a shaft inserted in the shaft hole and rotatable about the axis of the rotary shaft; And a connecting device that connects the rotating body and the shaft in a discontinuous manner so that the rotating body and the shaft can rotate together with the rotating body, and a driving force that moves the moving body with a rotating force that relatively rotates the rotating body and the shaft. An eccentricity adjustment mechanism, comprising: 2. A restriction for restricting rotation of the shaft so as to restrict rotation of the shaft with the rotary body when the connecting / disconnecting device disconnects the rotary body from the shaft. The device and the connecting / disconnecting device integrally rotate the rotating body and the shaft when the rotating body and the shaft are connected, and rotate the rotating body and the shaft when the connection between the rotating body and the shaft is released. Said shaft by rotating the body,
The eccentricity adjusting mechanism according to claim 1, further comprising: a rotation driving device that moves the moving body to a desired position via a driving force converting mechanism. 3. The first and second belt pulley, wherein the interrupting device is a first electromagnetic clutch that generates an interrupting action by an electromagnet, and the restricting device is fixed to the shaft so as to rotate together with the shaft, and the first belt. When the second belt wheel, which is connected to the vehicle via a belt, and the rotating body and the shaft rotate together, the second belt wheel is allowed to rotate, and the connection between the rotating body and the shaft is released. The eccentricity adjustment according to claim 2, further comprising: a second electromagnetic clutch that restricts rotation of the second belt wheel so as to restrict the shaft from rotating together with the rotating body. mechanism. 4. The driving force conversion mechanism includes a worm gear provided on the shaft, and a worm wheel that meshes with the worm gear and outputs a driving force to move the moving body by rotating the worm gear. The eccentric amount adjusting mechanism according to claim 1. 5. A maximum position at which the moving body moves, in which a plurality of non-contact sensors are provided so that the number of rotations and the direction of rotation of the rotating body can be detected and the limit of the moving amount of the moving body can be managed. The non-contact sensor is arranged in correspondence with the minimum position, and the eccentricity adjusting mechanism according to claim 1 or 2. 6. A rotating body that rotates about a rotation axis, a blade frame in which a plurality of cutting blades are arranged in parallel and stretched, and a guide member that guides the blade frame in a reciprocating manner within a predetermined range. A moving body which is guided by a guide portion provided on the rotating body so as to be movable in a direction orthogonal to a rotation axis of the rotating body; and a rotating body which is connected to the moving body and rotates the rotating body. A crank rod for converting into reciprocating motion of the blade frame, a shaft hole bored along the shaft center of the rotating shaft of the rotating body, and an axis line of the rotating shaft inserted in the shaft hole. A shaft rotatably provided around the rotating body, an interrupting device that connects the rotating body and the shaft so that the shaft can rotate together with the rotating body, and the rotating body and the shaft are relatively Rotate the rotating force to move the moving body Stroke adjustment mechanism of the cutting machine, characterized by comprising a driving force conversion mechanism for converting the power. 7. A restriction for restricting rotation of the shaft so as to restrict rotation of the shaft with the rotary body when the connection between the rotary body and the shaft is released by the connecting / disconnecting device. The device and the connecting / disconnecting device integrally rotate the rotating body and the shaft when the rotating body and the shaft are connected, and rotate the rotating body and the shaft when the connection between the rotating body and the shaft is released. Said shaft by rotating the body,
The stroke adjusting mechanism for a cutting machine according to claim 6, further comprising: a rotation driving device that moves the moving body to a desired position via a driving force converting mechanism. 8. A first electromagnetic clutch, wherein the interrupting device is a first electromagnetic clutch that generates an interrupting action by an electromagnet, and the restricting device is a first belt wheel fixed to the shaft so as to rotate together with the shaft, and the first belt. When the second belt wheel, which is connected to the vehicle via a belt, and the rotating body and the shaft rotate together, the second belt wheel is allowed to rotate, and the connection between the rotating body and the shaft is released. 8. The cutting machine according to claim 7, further comprising a second electromagnetic clutch that restricts rotation of the second belt wheel so as to restrict the shaft from rotating together with the rotating body when the shaft rotates. Stroke adjustment mechanism. 9. The driving force converting mechanism includes a worm gear provided on the shaft, and a worm wheel that meshes with the worm gear and outputs a driving force to move the moving body by rotating the worm gear. The stroke adjusting mechanism of the cutting machine according to claim 6, wherein 10. A maximum position at which the moving body moves, in which a plurality of non-contact sensors are provided so that the number of rotations and the direction of rotation of the rotating body can be detected and the limit of the moving amount of the moving body can be managed. 8. A stroke adjusting mechanism for a cutting machine according to claim 6 or 7, wherein a non-contact sensor is provided corresponding to the minimum position.