JP2003012183A - Conveying system of charging and sealing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a conveying system of a charging and sealing device that secures synchronization in speed among a plurality of carrier devices for carrying objects such as documents without causing a jam or wrinkles. SOLUTION: This system comprises the conveying devices A, B arranged in series for conveying the documents 8 at the same speed. The device A has an AC motor 6 and the device B has an AC servomotor 12. Photo sensors 9a, 9b are fixed on the device A on the upstream side for detecting speed of a conveyer belt 3a and controlling rotation speed of the AC servomotor 12 on the basis of the detected speed. Thereby, the speed of a conveyer belt 3b of the conveying device B on the downstream side is controlled at the same speed as that of the conveyer belt 3a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer system for an encapsulating and sealing apparatus, and more particularly to synchronous control of speed between a plurality of transfer apparatuses which are continuously arranged and have independent drive sources.

[0002]

2. Description of the Related Art Conventionally, from the viewpoint of labor saving and labor saving,
2. Description of the Related Art There is known a systematic enclosing and sealing device that automatically encloses and seals various forms such as payment statements for banks and usage statements for telephones in envelopes.

In this enclosing and sealing apparatus, a continuous form is cut out into each form (single form), the cut out form is folded if necessary, and when a plurality of forms are enclosed in one envelope, a plurality of forms are enclosed. After aligning and stacking, the form is arranged into a form suitable for encapsulation, then inserted into the envelope, the flaps of the envelope are glued, and the form is enclosed and sealed.

The enclosing / sealing device constitutes a system by connecting a plurality of processing units for performing these processes, and the form is transported between the processing units and between the units by using a transport device such as a transport belt. There is.

FIG. 3 shows a schematic example of a transport system using a plurality of such transport devices. In FIG. 3, the transfer system has two transfer devices A and B, and the transfer devices A and B are installed in one processing unit or one of two processing units in which the transfer device A is continuous, The carrier B is installed on the other side.

The transport device A serves as a transport unit and transport belt 3 wound around drive roller 1a and driven roller 2a.
The conveyor A has a conveyor belt 3a, a plurality of free rollers 4a contacting the surface of the conveyor belt 3a on an upper track, and a drive belt 5a wound around the drive roller 1a. The AC motor 6 that rotationally drives 3a is provided. The conveyor belt 3a places a form (not shown) conveyed from the upstream side on the conveyer belt 3a and conveys it in the direction of the arrow as it rotates.

The transport device B is disposed close to the downstream side of the transport device A in the document transport direction. Similarly, the transport device B
Is a conveyor belt 3b wound around a drive roller 1b and a driven roller 2b, a plurality of free rollers 4b contacting the surface of the conveyor belt 3b on an upper track, and the drive roller 1b.
transport belt 3b via drive belt 5b wound around b
And an AC motor 7 for rotationally driving. The conveyor belt 3b receives the form conveyed from the conveyor belt 3a and conveys it in the direction of the arrow in the figure as it rotates.

[0008]

In order to convey a form at the same speed by a plurality of conveying devices A and B as described above, conventionally, the rated rotational speeds of the AC motors 6 and 7 are taken into consideration, and A
The speeds of the transport devices A and B are synchronized by adjusting the gear ratio of the transmission gears attached to the C motors 6 and 7.

However, if there are fluctuations in the load applied to the conveyor belts such as different weights of the documents placed on the conveyor belts 3a and 3b, the AC motor is used as the belt drive source. The number of rotations of the AC motor changes, and the speed synchronization between the transport devices A and B is lost. As a result, the form may be caught between the conveyor belts 3a and 3b (jam), or may be wrinkled.
There was a problem that the efficiency of the enclosing and sealing process was reduced.

An object of the present invention is to provide a transfer system for an enclosing-sealing device, which has an independent drive source, and is provided with a plurality of transfer devices which are placed continuously on the transfer unit and are transferred at the same speed. In order to ensure speed synchronization among a plurality of conveying devices, it is possible to convey a conveyed object such as a form without causing jams or wrinkles.

[0011]

In order to solve the above problems, the invention according to claim 1 is, for example, as shown in FIG.
Conveyance section (conveyance belts 3a, 3b) with independent drive source
In the transport system of the enclosing-sealing device, which is provided with a plurality of transport devices A and B that are continuously arranged to place a transport object (form 8) on it and transport it at the same speed, the upstream side of the plurality of transport devices is used. The conveyor unit (conveyor belt 3a) of the conveyor unit A is provided with a speed detecting means 9 for detecting the speed, and the conveyor unit (conveyor belt 3b) of the conveyor unit B on the downstream side is driven so as to have the same speed as the detected speed. It is characterized by controlling.

According to the first aspect of the present invention, the speed of the transport section of the upstream transport apparatus is detected, and the transport section of the downstream transport apparatus is driven so as to be the same speed as the detected speed. Since the speed is controlled, even if the speed of the transport unit of the upstream transport unit fluctuates due to changes in the load on the transport unit, etc., the speed of the upstream and downstream transport units must be synchronized to ensure that forms and other documents are transported. Objects can be transported without causing jams and wrinkles. Therefore, the efficiency of the enclosing and sealing process is improved.

According to a second aspect of the present invention, in the transport system according to the first aspect, for example, as shown in FIG. 1, optical sensors 9a and 9b are provided as the speed detecting means, and the transport section of the upstream transport device A is provided. It is characterized in that the speed of the upstream transport device A is detected by optically detecting the timing when the transport object (form 8) passes through two points on the (transport belt 3a).

According to a third aspect of the present invention, in the transport system according to the first aspect, for example, as shown in FIG. 2, an encoder 13 or a tacho-generator is provided as the speed detecting means, and the drive source of the upstream transport device A is provided. By measuring the number of revolutions of the (AC motor 6) or the integrated value of the amount of revolution, the conveying section (conveyor belt 3a) of the conveying device A on the upstream side is measured.
It is characterized by detecting the speed of.

The invention according to claim 4 is the transport system according to claim 1, 2 or 3, wherein, for example, FIGS.
As shown in (4), the drive source of the transport device B on the downstream side is a servo motor (AC servo motor 12).

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

[First Embodiment] FIG. 1 is a schematic diagram of a transfer system of an enclosing and sealing apparatus according to an embodiment to which the present invention is applied. In the present embodiment, the transport system includes a plurality of transport devices that are continuously arranged, in this example, two transport devices A and B. The transport device A has a driving roller 1a.
Also, via a conveyor belt 3a as a conveyor unit wound around the driven roller 2a, a plurality of free rollers 4a contacting the surface of the conveyor belt 3a on the upper track, and a drive belt 5a wound around the drive roller 1a. An AC motor 6 that rotationally drives the conveyor belt 3a. Conveyor belt 3a
Places the form 8 conveyed from the upstream side on it and conveys it in the direction of the arrow as it rotates.

The carrying device B is arranged close to the downstream side of the carrying device A in the form carrying direction. The transport device B has the same configuration as the transport device A except that the transport device B has an AC servomotor 12 as a belt drive source. That is, the transport device B includes a transport belt 3b as a transport unit wound around the drive roller 1b and the driven roller 2b, a plurality of free rollers 4b contacting the surface of the transport belt 3b on the upper track, and the drive roller 1b. An AC servo motor 12 that rotationally drives the conveyor belt 3b via a drive belt 5b that is wound around the conveyor belt 3b. The conveyor belt 3b receives the form 8 conveyed by the conveyor belt 3a and conveys it in the direction of the arrow in the figure as it rotates.

According to the present embodiment, the upstream transport device A has an arbitrary position on the upper track of the transport belt 3a,
For example, the speed detecting means 9 for the conveyor belt 3a is installed at a position between the first and second free rollers 4a and 4a. The speed detecting means 9 is composed of two transmissive optical sensors 9a and 9b spaced apart from each other in the moving direction of the conveyor belt 3a, and is placed on the conveyor belt 3a to be conveyed.
The timing at which the tip of the
The speed of the conveyor belt 3a is detected from the time interval of the passage timing and the distance between the sensors 9a and 9b.

In the present embodiment, the optical sensor 9 is further used.
The speed of the conveyor belt 3a is calculated from the detection signals of the passage timings obtained by a and 9b, and the AC servomotor 12
Control unit (C
PU) 10 is installed. The controller 10 calculates the speed (linear speed) of the conveyor belt 3a based on the detection signal, and also calculates the rotation speed (rpm) of the AC servomotor 12 corresponding to this, and instructs the driver 11 to do this. By controlling the rotation speed of the AC servo motor 12, the speed of the conveyor belt 3b rotationally driven by the AC servo motor 12 is controlled.

As a characteristic of the servo motor, the driver 11 detects whether or not the AC servo motor 12 is rotating the conveyor belt 3b at the same speed as the instructed speed,
Since the rotation of the AC servomotor 12 is feedback-controlled, when the upstream conveyor belt 3a changes in speed, the AC servomotor 12 follows the speed and rotationally drives the conveyor belt 3b. As a result, the conveyor belt 3
The rotation of b is controlled to the same speed as the speed of the upstream conveyor belt 3a.

Therefore, according to the present embodiment, even if the speed of the upstream conveyor belt 3a fluctuates due to a change in load or the like, the forms 8 are conveyed by ensuring the speed synchronization between the conveying devices A and B. Therefore, it is possible to prevent the form 8 from jamming and wrinkling. In addition, the efficiency of the enclosing and sealing process is improved.

In the above embodiments, the transmission type optical sensors 9a and 9b are used as the speed detecting means of the conveyor belt 3a. However, when the difference in the amount of light reflection between the conveyor belt 3a and the form 8 is large, the light is reflected. Type optical sensor can be used.

[Second Embodiment] In the present embodiment,
As shown in FIG. 2, the transport belt 3 of the transport device A on the upstream side
The difference from the first embodiment shown in FIG. 1 is that the encoder 13 is provided in the AC motor 6 that rotationally drives a. The other configurations of the present embodiment are basically the same as those of the first embodiment, and the same reference numerals in FIG. 2 as those in FIG. 1 denote the same elements.

According to the present embodiment, the encoder 13 measures the number of rotations of the AC motor 6, and the control unit 10 calculates and detects the speed (linear speed) of the upstream side conveyor belt 3a from the measurement signal. To do. After that, as in the case of the first embodiment, the control unit 10 calculates the rotation speed (rpm) of the AC servo motor 12 corresponding to the speed of the conveyor belt 3a, and instructs the driver 11 to do this. The rotation speed of the AC servomotor 12 is controlled. AC servo motor 12
However, by rotationally driving the conveyor belt 3b following the speed of the conveyor belt 3a, the rotation of the conveyor belt 3b is controlled to the same speed as the upstream conveyor belt 3a.

Therefore, according to the present embodiment as well, even if the speed of the upstream conveyor belt 3a fluctuates due to a change in load or the like, the forms 8 can be conveyed while ensuring the speed synchronization between the conveying devices A and B. Thus, it is possible to prevent jams and wrinkles on the form 8.

In the above embodiment, the encoder for detecting the number of rotations of the AC motor 6 is used as the speed detecting means of the conveyor belt 3a, but a tacho generator for detecting the integrated value of the rotation amount of the AC motor 6 may be used. it can. Further, in the embodiment of the present invention, the AC servo motor 12 is adopted as the drive source of the downstream side conveyance device, but the present invention is not limited to this, and may be a DC servo motor.
It may also be a pulse motor. That is, any motor can be used as long as the speed can be controlled by the control signal.

Two embodiments of the present invention have been illustrated above.
In each case, the transfer device has been described by way of example in which there is one upstream transfer device and one downstream transfer device, but the present invention is not limited to this, and three or more transfer devices are continuously installed. It can also be applied when In that case, the speed of the transport belt of the upstream transport device is detected between all the two adjacent transport devices,
The speed of the transport belt of the downstream transport device may be controlled to be the same speed based on the detected speed.

[0029]

As described above, according to the present invention,
In the transfer system of the enclosing-sealing device, which has an independent drive source and includes a plurality of continuously arranged transfer devices that place an object to be transferred on the transfer unit and transfer the transferred objects at the same speed, The speed detecting means of the transfer section is installed in the upstream transfer apparatus to detect the speed of the transfer section of the upstream transfer apparatus,
Since the drive of the transport section of the downstream transport apparatus is controlled so that the speed becomes the same as the detected speed, the transport section speed of the upstream transport apparatus fluctuates due to changes in the load on the transport section, etc. Also, by ensuring that the speeds of the upstream and downstream transport devices are synchronized, it is possible to transport a transported product such as a form without causing jams or wrinkles.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a transfer system of an enclosing and sealing device according to an embodiment to which the present invention is applied.

FIG. 2 is a schematic diagram showing a transfer system of an enclosing and sealing device according to another embodiment to which the present invention is applied.

FIG. 3 is a schematic diagram showing a transport system of a conventional enclosing and sealing device.

[Explanation of symbols]

1a, 1b drive roller 3a, 3b Conveyor belt 6 AC motor 8 forms 9a, 9b optical sensor 10 Control unit 11 driver 12 AC servo motor

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3E056 AA05 BA06 CA01 DA01 DA03                       EA05 HA01                 3F048 AA09 AB04 BA26 BB02 BB10                       CC12 DA06 DC06 EB24                 3F049 AA01 DA04 EA10 EA21 EA28                       LA12 LB05

Claims (4)

[Claims] 1. A transfer system for an enclosing and sealing apparatus, comprising: a plurality of transfer devices that have independent drive sources and that are placed on a transfer unit and are transferred at the same speed. A speed detecting means for detecting the speed of the conveying part of the upstream conveying device of the conveying devices of (1), and controlling the driving of the conveying part of the conveying device of the downstream side so as to be the same speed as the detected speed. Conveying system for enclosing and sealing device. 2. The speed detecting means optically detects the timing at which a conveyed object passes through two points of the conveying section of the upstream side conveying device to detect the speed of the conveying section of the upstream side conveying device. The transport system according to claim 1, wherein: 3. The speed detecting means detects the speed of the transport section of the upstream side transport device by measuring the number of revolutions or the integrated value of the amount of rotation of the drive source of the upstream side transport device. The transport system according to claim 1, which is characterized in that. 4. The transport system according to claim 1, 2 or 3, wherein a drive source of the transport device on the downstream side is a servo motor.