JPH0651495B2 - Paper bundle banding device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper bundling device for bundling paper sheets with a banding tape.

BACKGROUND ART A paper bundle banding device that uses banding tape and bundles paper sheets with the banding tape includes a clamp member that detachably clamps a paper bundle formed by bundling a predetermined number of paper sheets, and the clamp member. A rotary ring for winding the banding tape around the paper bundle clamped by, a tape pressing member for holding the banding tape after winding so as not to loosen, and a heater for thermocompressing the end of the banding tape, Winding of the band-wrapping tape by holding the bundle of paper by the clamp member, inserting the tip of the band-wrapping tape into the paper-bundle, chucking the band-wrapping tape on the rotary ring, and rotating the rotary ring. After that, the tape pressing member is used to prevent the banding tape from loosening, and the end of the tape is thermocompression bonded with a heater. , Known from the past.

Here, in order to interlock the operations of the above-described members, in the paper bundle banding device according to the related art, a clamp member,
The rotary ring, the tape pressing member, the heater, etc. are driven by a single motor, a plurality of cam plates and clutches are attached to the motor, and the operation control of each member is performed by the cam plates and the clutch. I was doing.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention By the way, when each member is driven by a single motor, if the members lose synchronization for some reason, the synchronization is restored in order to recover them. Since it is necessary to perform strict adjustment between the respective members of the above, there is a drawback that it is troublesome and requires highly technical work, and that it is extremely difficult for a normal operator to perform this synchronization recovery work. .

Therefore, as a result of research by the present inventors, the loss of synchronization described above mainly occurs between the rotary ring operated by the clutch and the other members whose movement is controlled by the cam plate, and the tape actuated by the cam plate. Presser member,
The present invention has been completed by finding that it does not occur between heaters and the like.

Therefore, the object of the present invention is to keep good synchronization between the rotary ring and the members such as the tape pressing member and the heater, and even if the synchronization is lost, the synchronization can be easily recovered. The present invention is to provide a paper bundle banding device.

Means for Solving the Problems In order to achieve the above-mentioned object, a paper bundle sealing apparatus according to the present invention drives at least a tape pressing member and a heater by a cam member operated by an actuation motor, and a rotary ring. A ring drive motor for rotating and driving the rotary ring by connecting ring gears and attaching a drive gear meshing with the ring gears to an output shaft,
The number of teeth, which is provided separately from the operation motor, is provided with an encoder for detecting a rotation angle of a cam member driven by the operation motor, and the number of teeth of a ring gear in a rotary ring rotated by the ring drive motor is detected. It is characterized in that a detector is provided and both motors are synchronized based on the output signals from the encoder and the tooth number detector.

Action To perform banding of a paper bundle using this paper bundle banding device, first clamp the paper band, insert the tip of the banding tape into the paper band, and cause the rotary ring to chuck the banding tape. The rotary ring is driven by a ring drive motor, and, for example, the band-sealing tape is rotated 1.75 times on the sheet bundle, and the ring drive motor is stopped. After that, the cam plate is operated by the operation motor to hold the tape pressing member against the band-sealing tape so that the band-sealing tape is not loosened. In this state, the heater is operated to operate the end of the band-sealing tape. The bundle of papers can be band-sealed by thermocompressing the parts.

Here, if the rotary ring and members other than the rotary ring are driven by separate drive systems, it is necessary to synchronize both drive systems. This synchronization is a tooth for counting the number of teeth of the ring gear. Since it is performed based on the signal from the detector and the signal from the encoder that detects the rotation angle of the cam plate, both drive systems can be reliably synchronized by a simple detection mechanism. Moreover, even when the drive system is restarted after it is stopped due to a failure, etc., even if the drive system loses synchronization, these rotation angle detectors automatically recover the drive system synchronization. To be done.

Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

First, in FIG. 1, 1 is a sheet bundle, 2 is a banding tape for bundling the sheet bundle 1, and the sheet bundle 1 is a clamp side piece 3a on the fixed side.
It is designed to be clamped by a clamp member 3 composed of a movable side clamp portion piece 3b. Then, in order to wind the banding tape 2 around the bundle 1, the tape feeding motor
4 is provided with a tape feed roller 5, and the banding tape 2 is supplied to the sheet bundle splitting member 6 via this tape feed roller 5, and the sheet bundle splitting member 6 feeds the banding tape 2 into a sheet bundle. The inside of 1 can be interrupted.

Next, 7 indicates a rotary ring having a space for communicating the bundle 1 of paper inside, and the rotary ring 7 is rotatably supported by support rollers 8 provided at three positions as shown in FIG. There is. The rotary ring 7 has a chuck block 9a and a chuck roller 9b as a chuck member 9 for chucking the band-sealing tape 2, and the chuck roller 9b can be brought into contact with and separated from the chuck block 9a. . In order to bring the chuck roller 9b and the chuck block 9a into and out of contact with each other, the chuck block 9a is guided by the circular arc groove 10 and is movable in the circumferential direction of the rotary ring 7, and the chuck 11 is always chucked by the spring 11. The roller 9b is urged in the contacting direction, and at the original position of the rotary ring 7, the locking lever 12 engages with the stopper 13 provided on the chuck block 9a so that it can be separated therefrom.
Then, in order to drive the rotary ring 7 to rotate,
A ring drive motor 14 is provided, and the ring drive motor 14
A drive gear 15 is attached to the output shaft 14a of the drive shaft 15a, and the drive gear 15 meshes with a ring gear 16 connected to the rotor ring 7.

Further, 17 is a tape pressing member for preventing looseness of the band-sealing tape 2 wound around the paper bundle 1, and 18 is a heater for thermocompression bonding of the band-sealing tape 2.
7. The heater 18 is attached to the arms 19 and 20, respectively. The arms 19 and 20 together with the arm 21 and the locking lever 12 attached to the movable side clamp portion piece 3b are cam plates 22a, 22b and 22.
It is connected to c and 22d (hereinafter referred to as cam plate 22 when collectively referred to). The cam plate 23 is mounted on the cam shaft 23, and the cam shaft 23 is further mounted with a driven gear 24. The driven gear 24 meshes with a drive gear 26 mounted on the output shaft 25a of the actuating motor 25. There is.

As a rotation angle detector that detects the rotation angle of the rotary ring 7 that is rotationally driven by the ring drive motor 14 described above,
A tooth number detector 27 is provided from a photoelectric device or the like that forms the number of teeth from the predetermined origin position of the ring gear 16. Further, in order to detect the rotation angle of the cam plate 24, the camshaft 23 is made up of means such as optical and magnetic as a rotation angle detector for detecting the rotation angle, and the angle of the camshaft 23 is displayed. An encoder unit 28 is provided by an encoder 28a and a sensor 28b that detects the angle of the encoder 28a.
Then, the tooth number detector 27 and the encoder unit 28 synchronize the operation members such as the rotary ring 7, the tape pressing member 17, the heater 18 and the like so that the operation control can be performed so as not to interfere with each other. Has become.

In FIG. 1, 29 is a solenoid for displacing the sheet bundle splitting member 6 between an operating position in which the sheet bundle 1 is inserted inside the sheet bundle 1 and a non-operating position in which it is separated from the sheet bundle 1, and 30 is operated by a solenoid 31. A cutter for cutting the end portion of the band-sealing tape 2 and a sensor 32 for detecting the origin position of the rotary ring 7 are shown.

The present embodiment is configured as described above, and its operation will be described next.

Thus, the movable side clamp part piece 3b constituting the clamp member 3 is held in a state of being separated from the fixed side clamp part piece 3a, and the chuck block 9a is separated from the chuck roller 9b by the locking lever 12. None, and further, when the sheet bundle splitting member 6 is in the operating position, the banding tape 2 is inserted into the sheet bundle splitting member 6 via the chuck block 9b and the chuck roller 9b. In this state, when the sheet bundle 1 is aligned and inserted between the clamp pieces 3a, 3b, the sheet bundle splitting member 6 divides the sheet bundle 1 into the sheet bundle 1. Then, the tape feed motor 4 rotates the tape feed roller 5 to insert the band-sealing tape 2 into the inside of the sheet bundle 1, and when this is completed, the solenoid 29 causes the sheet bundle splitting member 6 to escape from the sheet bundle 1. . Then, when the insertion of the sheet bundle 1 is detected by a sensor (not shown), the actuation motor 25 is driven based on the detection of the sensor to rotate the cam shaft 23 and engage with the cam plate 22c.
Arm 21 is operated, and the clamp piece 3b is clamped.
3a, the bundle of paper 1 is clamped between the clamp pieces 3a, 3b, and the locking lever 12 is separated from the stopper 13 by the rotation of the cam plate 22d so that the chuck block 9b abuts on the chuck roller 9a. Then, the banding tape 2 is chucked, and when these operations are completed, the operation of the operation motor 25 is stopped. This operation motor 25 is stopped by the encoder
Controlled by 28.

After the stop of the operation motor 25, the ring drive motor 14 rotates the operation rotary ring 7. Due to the rotation of the rotary ring 7, the band-sealing tape 2 chucked by the chuck member 3 is rotated and wound around the sheet bundle 1, and when the band-sealing tape 2 reaches a predetermined length, the cutter 30 is activated to Cut the ends. Then, when the rotary ring 7 rotates, for example, 1.75, the rotation angle is detected by the tooth number detector 27, the actuation motor 25 is actuated again based on the detection signal, and the tape pressing member 17 causes the band-tapping tape 2 to operate. The vicinity of the end of the
While the band-sealing tape 2 is being pressed by the tape pressing member 17, the heater 18 is activated to thermocompress the end of the band-sealing tape 2 to complete the band-sealing of the sheet bundle 1 and the clamp piece 3b is clamped. The paper bundle 1 can be taken out by separating from the piece 3a.

After that, when the ring drive motor 14 moves to the origin position of the rotary ring 7, the ring drive motor 14 is stopped based on the signal from the tooth number detector 27. Also,
The operation motor 25 returns the tape pressing member 17 and the heater 18 and engages the locking lever 12 with the stopper 13,
When the cam shaft 23 is rotated to a position where the chuck block 9b is separated from the chuck roller 9a, the operation motor 25 is stopped by a signal from the encoder section 28. Then, when the take-out of the sheet bundle 1 is completed, the sheet bundle splitting member 6 returns to the operating position, and the banding tape 2 is inserted into the sheet bundle splitting member 6 via the chuck block 9a and the chuck roller 9a. Then, the standby state for band-sealing the next sheet bundle is set. Therefore, by repeating this operation in sequence, the banding work of the sheet bundle can be continuously performed.

In order to continuously perform the banding operation of the above-mentioned paper bundle, each member must not interfere with the movement of other members. Here, the members driven by the cam plate 22 do not move so as to interfere with each other. However, between the member driven by the cam plate 22 and the rotary ring 7, for example, the tape pressing member 17, the heater 18, the arms 19 and 20 for activating them, and the chuck member 9 attached to the rotary ring 7 are provided.
And may interfere with each other. However, the operation of these members driven by the cam plate 22 is controlled by the encoder unit 28, and the movement of the rotary ring 7 is controlled by the number-of-teeth detector 27 attached to the ring gear 16, and the encoder unit 28 and the teeth are also controlled. Since it is synchronized with the number detector 27, no interference occurs between these members.

Further, when the device is stopped halfway due to a trouble or the like, a positional deviation may occur between the rotary ring 7 and the member driven by the cam plate 22 when the device is restarted. However, the rotary ring 7 and the member driven by the cam plate 22 are driven by separate motors 14 and 25, and the movement of each of these motors 14 and 25 depends on the number of teeth as a rotation detector. Since it is controlled by the detector 27 and the encoder unit 28, each of them can be independently returned to the origin position at the time of restart, and restart after a halfway stop can be performed smoothly and quickly. . Moreover, since the position of the rotary ring 7 and the position of each member driven by the cam plate 22 are detected by the number-of-teeth detector 27 and the encoder 28, respectively, the origin return sequence between the above-mentioned members is preset. By doing so, the origin return of each member after the intermediate stop can be performed smoothly and safely.

It should be noted that in the above-described embodiment, the members to be driven by the operation motor 25 are configured to drive not only the tape pressing member 17 and the heater 18, but also the movable side clamp portion piece 3b and the locking lever 12. Rotary rings that interfere with each other 7
The tape pressing member 17 and the heater 18 may be configured as separate drive systems, and the clamp piece 3b or the like may be configured as a separate drive system, and the cutter 30 or the like may be configured by the operation motor 25. It may be driven.

EFFECTS OF THE INVENTION As described in detail above, the paper bundle banding device according to the present invention includes a rotary ring drive system for winding the banding tape around the paper bundle, and a drive system for driving the tape pressing member and the heater driven by the cam member. Is provided separately, a rotation angle detector for detecting the rotation angle of each of the rotary ring and the cam member is provided, and the members are synchronized based on the signals from these rotation angle detectors. The above-mentioned members can be operated smoothly without interfering with each other in the middle of their operation, and even if the members are stopped midway for some reason, they are driven by the rotary ring and the cam plate. Can be individually returned to the origin position, so that synchronization can be automatically and reliably restored for each member when restarting, and the rotary ring As a rotation angle detector, in order to rotationally drive this rotary ring, a ring gear that meshes with a drive gear that is rotationally driven by a ring drive motor is used as a member on the detected side, and the number of teeth of this ring gear is detected by a tooth number detector. Since it is configured to count, there is an effect that the configuration of the rotation angle detection mechanism is significantly simplified.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention, and FIG. 2 is a front view of a rotary ring. 1: paper bundle, 2: banding tape, 7: rotary ring, 14:
Ring drive motor, 16: Ring gear, 17: Tape pressing member, 18: Heater, 22: Cam plate, 23: Cam shaft, 25:
Actuation motor, 27: tooth number detector, 28: encoder part.

Claims (1)

[Claims] 1. A rotary ring for winding a banding tape around a bundle of paper clamped by a clamp member, a tape pressing member for holding the banding tape after winding so as not to loosen, and an end portion of the banding tape. In a paper bundle banding device including a heater for thermocompression bonding, at least the tape pressing member and the heater are driven by a cam member operated by an operation motor, and a ring gear is connected to the rotary ring and meshes with the ring gear. A ring drive motor that rotationally drives the rotary ring by attaching a drive gear to the output shaft is provided separately from the operation motor, and an encoder that detects a rotation angle of a cam member driven by the operation motor is mounted. In addition, the number of teeth of the ring gear in the rotary ring rotated by the ring drive motor It provided the number of teeth detector output, paper bundle bundling apparatus characterized by being configured to synchronize the two motors based on an output signal from the encoder and the number of teeth detectors.