JPH02166013A - Supply method of thermal welding tape in bundling machine - Google Patents

Abstract

PURPOSE:To prevent the generation of the jamming of a tape for bundling by alternately repeating reverse rotation for a fixed time and forward rotation for a fixed time several times in a motor for driving a pressure roller and starting the supply of the tape. CONSTITUTION:The presence of a tape T is confirmed by a tape detecting sensor 5, the reverse rotation of a roller drive motor 2 is started, and the tape T is retreated. A timer 8 for the reversing time management of the roller drive motor 2 is set simultaneously, the set pulse value of an MPU 1 and a count value in an encoder E are compared, timer check is started again when the count value of the encoder E does not reach a set value, and the roller drive motor 2 is braked when the count value and the set value coincides. The roller drive motor 2 is changed over to forward rotation. The operation of the reverse rotation-forward rotation is conducted certain times such as four times, and the tape for bundling is fed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for supplying a heat-fusible tape in a binding machine that supplies a binding tape while being held between at least one pair of pressure rollers.

[Prior Art] Conventionally, automatic binding machines for binding multiple articles and multiple sheets of paper, etc. have been used in a wide range of fields.
Heat-fusible tape is very often used as a binding material because it is easy to bond and cut.

In order to supply the tape in such a case, the tape is held between at least one pair of pressure rollers, and at least ! of this pair of pressure rollers is fed. one side is driven by a drive motor,
Sending to the binding section of the binding machine (Jikko Sho 58-1528
(See Publication No. 3).

[Problem M to be solved by the invention] In a conventional tape supply system that uses a pressure roller, when the binding material is a heat-fusible tape, when the stand is stopped for a long time, for example, For example, (1) starting the next day's work due to a power outage the previous day, (2) power outage due to a power outage during the operation of supplying binding tape to a bundle of paper sheets,
Alternatively, (3) if the tape is left unattended during the day with the power on, the tape may become sticky due to pressure being applied to the same area for a long time, and the tape may become sticky when starting the binding machine. There was a problem in that tape jams occurred frequently, such as people wearing t-shirts.

The present invention was made to solve these problems, and it is possible to check the cause of tape jams in advance, and
Another object of the present invention is to provide a method for preventing slight peeling or adhesion between rollers and tape, and for preventing tape jams from occurring when a binding machine is started or when a start switch is on standby.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method for supplying a heat-fusible tape in a binding machine that supplies a binding tape while being held between at least one pair of pressure rollers. The pressure roller drive motor starts supplying the binding tape after repeating alternately reverse rotation for a certain period of time and forward rotation for a certain period of time, and when the start switch is on standby, the motor rotates in the normal direction and rotates forward for a certain period of time. In addition to the alternately repeated reverse rotation, the pressure roller driving motor is caused to repeat forward rotation several times for a predetermined period of time, and then, after a predetermined period of reversal, supply of the binding tape is started.

[Function] When power is turned on or when the start switch is on standby, the pressure roller drive motor is made to alternately repeat several times of reverse rotation for a certain period of time and forward rotation for a certain period of time before starting to supply the binding tape. Even if the tape has become sticky due to long stops and pressure is applied to the same spot for a long time, the contact position between the tape and each roller may shift slightly, and the rollers and tape may adhere to each other. Even if the tape is mild, it will peel off and will not interfere with continued regular tape supply.

Furthermore, when the start switch is on standby during the energization, the pressure roller driving motor is rotated forward for a certain period of time, repeated several times, and then reversed for a certain period of time, so that the tape and the roller are not connected to each other. Due to the displacement of the contact position, even if the roller and the tape are attached to each other, the roller and the tape will peel off in a slight case, and this will not interfere with the subsequent regular tape supply.

Note that if the tape and roller are heavily adhered and the roller cannot rotate forward or reverse, a repairman will have to repair it.

[Example J Figure 1 shows an outline of tape feeding in a binding machine. In the figure, a tape T whose adhesive part is made of a heat-fusible material in a wound state is held between a pair of pressure rollers R1 and R2. The sheet is then sent out and wrapped around a bundle of paper sheets on a rotary table (not shown). Note that P indicates the leading edge position of the tape T. E is an encoder attached to the end of the pressure roller R1 on the drive side connected to a roller drive motor to be described later, and detects the accurate rotation angle and rotation speed of the pressure roller R.

Although the mechanism of the binding machine is not specifically illustrated here, it can be applied in the same way as conventionally known mechanisms, and its series of operations is also the same.Normally, the binding machine is powered by a microprocessor (hereinafter referred to as , simply called rMPU), and performs a series of operations such as bundling under its control. In this case, the main parts of the control system that are related to the configuration shown in FIG. 1 and related to the explanation below are configured as shown in the block diagram shown in FIG. roller drive motor 2, encoder E, power switch 3, start switch 4. A tape detection sensor 5, a heater 6, an operation timer 7, a motor timer 8, and the like are connected in common.

Note that in the above configuration, the motor for driving the rotary table, various sensors, and other driving members are not shown in the drawings as they are outside the scope directly pointed out.

Next, the tape feeding operation based on the above-described configuration will be explained based on FIGS. 3 to 6.

First, regarding the operation of the roller drive motor at the time of starting energization, that is, when the power is turned on, we will explain the flowchart in Figure 3 and the flowchart in Figure 5.
This will be described together with a diagram showing the movement locus of the tape leading edge position.

Now, when you turn on the power switch 7chi3 of the binding machine, the MPU
Initialization is performed by I, and a check is made to see if the heater 6 has been heated, and the presence or absence of the supply tape T is also checked by the tape detection sensor 5. If the supply tape T is not present, the machine starts. Operation is not possible until the tape T is replenished. In other words, step D is a step for notifying that there is no tape T and replenishing it.

After the presence of the tape T is confirmed by the tape detection sensor 5, the roller drive motor 2 starts reverse rotation, and the tape T
retreats. At the same time, a timer 8 for managing the reversal time of the roller drive motor 2 is set, and when the motor timer 8 starts monitoring the time, the encoder E starts detecting pulses. Then, it is monitored whether or not a predetermined number of pulse outputs based on the rotation of the roller drive motor 2 are obtained from the encoder E within the required time set by the timer 8.

That is, the set pulse value in MPU 1 and the count value in encoder E are compared, and if the count value in encoder E has not reached the set value, the timer check is performed again, and the Hh sum where the count value and the set value match is determined. Then, the brake is applied to the roller drive motor 2. And roller drive motor 2
is switched to forward rotation (see Figure 3, route A).

On the other hand, the roller drive motor 2 is operated until the timer value reaches zero.
If the pressure rollers R1 and R2 do not rotate due to the adhesiveness of the tape T and the roller drive motor 2 cannot rotate in the reverse direction, the predetermined number of pulses will be output within the time set by the timer 8. As a result, the operation is timed out in both cases, but instead of entering the error process, the tape T is moved to the B route in Fig. 3, and the tape T is moved forward in the forward rotation state. This causes the tape to be peeled off.

At the same time that the roller drive motor 2 enters the normal rotation state, a timer 8 is set to manage the normal rotation time, and the encoder E starts detecting pulses while the timer 8 monitors the time as described above. . Then, the set value and the count value of the encoder E are compared, and if the count value of the encoder E has not reached the set value, the timer check is started again. If this count value and the set value match, the roller drive motor 2 is braked to stop it, but if the two values do not match, the roller drive motor 2 rotates forward until the timer value reaches zero. If this happens, the process enters an error process due to a timeout.

If this reverse-forward operation has been performed four times as shown in Figure 5, the process will proceed to the next step, and if the operation has not yet been completed, the process will return to route C in Figure 3. Become.

Note that FIG. 3 shows the trajectory of the tape tip position during reverse and forward rotation of the roller drive motor 2, and the solid line indicates the case where the above example was typically performed without any trouble. 0 position "0" is the position when the binding machine heats up, and vr! ? You can understand the magnitude and number of forward and reverse rotations that change as fl progresses.

The time required for this process is approximately 5 seconds, and the maximum movement width is approximately 1
The tape T has moved forward by 5 m1+, and in the end, the tape T has moved forward by approximately 5 ms+ from the position at the time of heating up.

The process of moving the tape T shown by the solid line in FIG. Although mainly described above, this tape peeling operation can be similarly applied not only when power is started, but also when the start switch 4 is not pressed for a long time during power supply and is in a standby state.

On the other hand, in the standby state of the energized start switch 4, the tape T is moved as shown in FIG. It is also effective to divide the rotation of the roller drive motor 2, which moves the tape tip position, into several times by determining time intervals of minutes, as shown in the flowchart shown in FIG. 4, and as shown in FIG. 6. .

In this case, the distance traveled in one forward rotation is approximately 311
M, and after repeating the above-mentioned normal rotation process four times, it returned to the original position by performing two reverse rotations.

By adopting the above process, it was possible to significantly reduce tape jams at the start of binding.

[Effect of the invention] According to the method of the invention, when feeding tape to a binding machine,
The pressure roller drive motor undergoes a process in which it alternately rotates in reverse and forward rotation for a certain period of time, or a process in which it repeats forward rotation for a certain period of time several times and then reverses for a certain period of time, so the heat-fusible tape becomes sticky. Even if the tape is contaminated and has poor peelability from the pressure roller, the contact point of the tape with the pressure roller will be changed, making it easier to peel off, and also prevent the tape from adhering when the start switch is on standby. This makes it possible to reliably prevent tape jams from occurring.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the relationship between the pressure roller and tape in a binding machine that implements the method of the present invention, FIG. 2 is a block diagram of the main part of the control system, and FIGS. 3 and 4 are This is a flowchart of an embodiment, and FIGS. 5 and 6 are diagrams showing a typical relationship between the amount of movement of the tape leading edge position and time (trajectory of movement) in each embodiment of the present invention. T...tape, R,, R2...pressure roller, E...
・Encoder, P...Tape tip. Patent applicant: Teru Soga Michi, agent of Musashi Engineering Co., Ltd. 1. . Figure 1, Figure 3, Figure 2, Figure 3

Claims (2)

[Claims] (1) In a method of supplying a heat-fusible tape in a binding machine that supplies the binding tape by sandwiching it between at least one pair of pressure rollers, the pressure roller drive motor rotates in reverse for a certain period of time and in the forward direction for a certain period of time. A method for supplying heat-fusible tape in a binding machine, characterized in that supplying the binding tape is started after repeating the steps alternately several times. (2) In a method for supplying heat-fusible tape in a binding machine that supplies the binding tape while being held between at least one pair of pressure rollers, the pressure roller drive motor is rotated several times in the normal direction for a fixed period of time. After a certain period of reversal,
A method for supplying heat-fusible tape in a binding machine, comprising starting supply of binding tape.