JP4358958B2 - Obi machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a strapping machine that straps and binds a plurality of bundled articles such as banknotes and papers.
[0002]
[Prior art]
FIG. 4 shows an outline of the external structure of this type of strapping machine. A pair of columnar portions 12 are provided on the left and right sides of a rectangular parallelepiped main body 11, and upper ends of the columnar portions 12 are connected to each other by a connecting portion 13, and are surrounded by the columnar portion 12, the connecting portion 13, and the main body 11. Thus, a rectangular window 14 is formed.
An operation switch is disposed on the front edge side of the table 15 that forms the upper surface of the main body 11. In the figure, 16 is a start switch, and 17 is an automatic / manual switch.
[0003]
The inner surfaces of the pair of columnar portions 12 and the connecting portion 13 are open surfaces, and a guide groove 18 is formed in the table 15 between the pair of columnar portions 12. A part of the receiving plate 19 is positioned and exposed in the guide groove 18 as shown in the figure, and a sensor 22 is disposed in an opening 21 provided in the table 15 in front of the receiving plate 19. The sensor 22 is an object detection sensor using, for example, infrared rays.
[0004]
Although not shown in FIG. 4, FIG. 5 is provided in a pair of columnar parts 12, a connecting part 13, and a guide groove 18 of the main body 11 surrounding the window 14 in order to form a tape loop. The tape guide mechanism is shown in detail, and an openable tape guide 25 is constituted by a pair of guides 23 and 24 that form a loop corresponding to the window 14.
As a mechanism for opening and closing the tape guide 25, a cam 26 rotated by a motor (not shown), a first plate cam 28 having a bearing 27 engaged with the cam 26 attached to one end, and the plate A second plate cam 31 connected to the upper end of the cam 28 by a wire 29; a bearing 32 attached to the outer surface of each of the left and right vertical portions of the guides 23, 24 and engaged with the plate cams 28, 31; A coil spring 33 that is attached to the lower end of the plate cam 31 and urges the plate cam 31 downward, and is attached to the lower surface side of the lower horizontal portion of the guides 23 and 24 (not shown in the figure). And a coil spring that biases the two in a direction approaching each other. FIG. 5B shows an engaged state between the plate cam 31 and the bearing 32, and the plate cam 28 has the same structure as the plate cam 31. In the figure, reference numeral 34 denotes a bearing that supports the wire 29.
[0005]
By rotating the cam 26 and lowering the bearing 27, the plate cam 28 moves downward, and in conjunction with this, the plate cam 31 moves upward. As a result, the distance between each pair of bearings 32 attached in pairs to the guides 23 and 24 is widened, that is, the guides 23 and 24 are separated from each other and the tape guide 25 is opened.
On the other hand, the tape guide 25 is closed by rotating the cam 26 and returning the plate cams 28 and 31 to their original positions, whereby the guide 23 is biased by a coil spring in a direction approaching each other. 24 return to the original closed state.
[0006]
The guides 23 and 24 have a cross-sectional shape as shown in FIG. 5C. That is, since the outer edges of each of the guides 23 and 24 are folded inwardly in a U shape, even if the tape is weak, for example, Since the tape is held by the folded portion, a loop can be reliably formed. In addition, inclined metal fittings 35 to 38 are attached to the lower horizontal portions of the guides 23 and 24 as shown in the drawing.
The tape 41 is fed from the tape roll 42 and fed into the tape guide 25 through the tape guide 43. The feeding of the tape 41 and the tightening (retraction) at the time of tying are performed by the feeding / binding roller 44 shown in FIG. 6A and the auxiliary roller 45 that follows this.
[0007]
In FIG. 6A, reference numeral 46 denotes an object to be bound that is positioned on the receiving plate 19 and placed on the table 15. Reference numeral 47 located below the receiving plate 19 denotes a heater assembly. As shown in detail in FIG. 6B, the heater assembly 47 is a member in which a heater 49, a cutter 51, and a holding bracket 52 are attached to a support member 48, and is movable in the vertical direction. The heater 49 and the cutter 51 are relatively movable.
[0008]
Next, the banding work by this banding machine will be described in the order of steps with reference to FIGS. A series of operations in this strapping machine can be selected from automatic start or manual start by the automatic / manual changeover switch 17. When the automatic start is set, the operation is performed when the sensor 22 senses the object to be bound 46. When the manual start is set, the sensor 22 senses the object to be bound 46 and starts operation when the start switch 16 is pressed.
[0009]
(Step 0: FIG. 7) An initial state (waiting state) is shown. The tape guide 25 is closed and a tape loop is formed. The tip of the tape 41 is in contact with the tape stopper 53.
(Step 1: FIG. 8) The object to be bound 46 is set on the receiving plate 19. The strapping machine starts operating, retracts the tape stopper 53, opens the tape guide 25, and releases the holding of both side edges of the tape 41.
[0010]
(Step 2: FIG. 9) The holding metal fitting 54 is raised, the holding plate 19 and the holding metal fitting 54 are sandwiched and pressed with the tape 41, the feeding / binding roller 44 (see FIG. 6) is rotated, and the tape 41 is pulled back to tape. The loop is tightened and the tape 41 is brought into close contact with the object to be bound 46.
(Step 3: FIG. 10) The heater assembly 47 (see FIG. 6) is raised, and the receiving plate 19 and the holding bracket 52 sandwich and hold the two layers of the tape 41 hung on the object to be bundled 46, and further the cutter. At 51, the tape 41 is separated and cut from the tape roll 42, and the start and end portions of the tape 41 are sandwiched between the receiving plate 19 and the heater 49 that is energized and heated.
[0011]
(Step 4: FIG. 11) The heater assembly 47 is lowered and the backing plate 19 is retracted. In this state, it is possible to take out the object 46 to be bound.
(Step 5: FIG. 12) The tape guide 25 is closed. At this time, if the object to be bound 46 is still present, the part of the tape 41 that has been hung from the receiving plate 19 is lifted by the inclined metal fittings 35 to 38.
(Step 6: FIG. 13) The receiving plate 19 and the tape stopper 53 are advanced, and the feeding / binding roller 44 is rotated to feed the tape 41 from the tape roll. The tape 41 forms a loop along the tape guide 25, and the front end hits the tape stopper 53 to return to the initial state of FIG. As shown in FIG. 13, the tape loop can be formed without any problem even if the bound object 46 is still attached at this point.
[0012]
[Problems to be solved by the invention]
As described above, in the conventional strapping machine, the sensor 22 senses the object to be bound 46 in the case of automatic setting, and the sensor 22 senses the object to be bound 46 in the case of manual setting and starts. When the switch 16 is pressed, a series of operations of tightening (banding) the tape loop, cutting the tape, welding the tape, and forming the next tape loop are performed.
[0013]
However, in the conventional strapping machine that employs such a starting method, there has been a situation in which the operation starts accidentally.
That is, in the case of automatic setting, the operation starts even if the sensor 22 senses the hand or clothing of the person who is working instead of the actual object to be bound 46, and the tape without the object to be bound 46 is present. The loop is tightened and cut and welded.
In this case, the tape 41 remains wound around the receiving plate 19 or the wound tape 41 is detached from the receiving plate 19 due to the backward movement of the receiving plate 19 (step 4: see FIG. 11). Something falls inside.
[0014]
If the tape 41 is wound around the backing plate 19, it may cause subsequent malfunctions. Therefore, it is necessary to remove the wound tape 41. In this case, particularly when the tape 41 is made of synthetic resin, it is easily broken. Since it cannot be taken, work such as cutting with a cutter or scissors is necessary, and such work is troublesome and extremely troublesome.
On the other hand, when the tape 41 falls into the main body 11, the cover of the main body 11 must be opened and removed. In this case as well, the work is troublesome and time-consuming.
[0015]
The same thing occurs in the case of manual setting. For example, when an object is accidentally placed across the opening 21 where the sensor 22 is arranged and the start switch 16, the operation starts and the tape 41 is wound. Will occur.
In view of the above-described problems, an object of the present invention is to provide a strapping machine capable of minimizing the occurrence of winding of a tape around a backing plate even if the operation is erroneously started in the absence of an object to be bound. It is to provide.
[0016]
[Means for Solving the Problems]
According to the present invention, the tape is fed out from the tape roll to form a tape loop, and the loop is tightened to tie the tape to the object to be bound placed on the receiving plate. A strapping machine that separates and cuts the tape from the tape roll on the lower surface side of the backing plate interposed between the lower surface of the bundle and welds the start and end portions thereof, and the sensor is bound When an object is detected, in a strapping machine configured to start a series of operations of banding, cutting, welding, and next loop formation, or when a sensor detects a bound object and the start switch is pressed In the strapping machine that is configured to start a series of operations,
The heater for welding is assumed to start energization after the above operation starts,
After the start of operation, means for determining whether the material to be bound by monitoring the output signal of the sensor up to the welding, when it is determined that there is no material to be bound by the determination means, the power supply to the heater Means for stopping.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In this example, as in the case of the strapping machine shown in FIG. 16 and the automatic / manual changeover switch 17 have a configuration in which tape welding is not performed when an operation is started by mistake.
[0018]
First, the part (similar part) corresponding to the structure in the conventional strapping machine will be described.
The start signal generating means 61 generates and outputs a start signal. Based on the signal from the automatic / manual switching switch 17, in the case of automatic setting, the sensor 22 uses an output signal that senses an object (bound object). In the case of manual setting, the sensor 22 generates and outputs a start signal based on the logical sum of the output signal when the object 22 senses an object and the signal from the start switch 16.
[0019]
When the start signal is input from the start signal generating means 61, the heater control means 62 considers conditions such as tape material and ambient temperature in order to raise the heater 49 to an appropriate temperature before the welding operation. An appropriate energization timing to the heater 49 is determined, and the timing signal, that is, a heater control signal is output to the heater driver 63.
The heater driver 63 supplies current to the heater 49 based on the heater control signal. As a result, the heater 49 is heated to a required welding temperature after a predetermined time has elapsed since the start signal is generated, and is ready for welding.
[0020]
In this example, a determination unit 64 and a stop unit 65 are added to such a configuration as shown in FIG.
After the start signal is generated and the strapping machine starts operating, the determination means 64 monitors the output signal of the sensor 22 until the welding is performed, and determines the presence or absence of an object to be bound (object). When it is determined that there is no object when the signal is ON (energized state), the signal is output to the stopping means 65.
[0021]
The stop unit 65 outputs a stop signal to the heater control unit 62 based on the signal from the determination unit 64. When the stop signal is input, the heater control means 62 immediately turns off the heater control signal, that is, stops energization of the heater 49.
Thus, when the operation is erroneously started in a state where there is no object to be bound, the operation of the heater 49 sandwiching the start and end portions of the tape 41 between the receiving plate 19 (see FIG. 10) is the same as the conventional one. However, since the welding temperature has not been reached, the welding is not performed.
[0022]
Therefore, although the tape 41 is wound around the backing plate 19, it is in a state where it is simply cut, and both ends (start and end) are opened from the reaction force (restoring force) against bending, and held and engaged with the tape guide 25. Alternatively, since it jumps out on the receiving plate 19, that is, on the table 15, it can be easily removed by hand and does not drop into the main body 11.
The start signal generating means 61, the heater control means 62, the judging means 64, and the stopping means 65 in FIG. 1 can be configured by using, for example, a microcomputer, and this microcomputer is built in the main body 11.
[0023]
FIG. 2 is a flowchart showing the energization control operation of the heater 49 described above.
When the start signal is generated (step S1), the heater control signal is turned ON at a predetermined timing (step S2). The output signal (object detection signal) of the sensor 22 is monitored (step S3). If there is an output signal, that is, if there is an object to be bound (object), the monitoring is continued for a set time, and the set time has elapsed (step After S4), the heater control signal is turned off (step S5). Thereby, the heater 49 is heated to a required welding temperature.
[0024]
On the other hand, if there is no sensor output signal in step S3, that is, if the sensor 22 does not sense an object, the heater control signal is immediately turned OFF (step S5). Thereby, the energization to the heater 49 is stopped, and the temperature rise to the welding temperature is stopped.
FIGS. 3A and 3B are timing charts for normal operation and malfunction, respectively. As shown in FIG. 3A, the heater temperature rises during normal operation. If the sensor 22 is accidentally touched and malfunctioned, the heater temperature does not rise and the welding cannot be performed.
[0025]
【The invention's effect】
As described above, according to the present invention, for example, when the sensor senses the hand or clothing of the person who is working, or when the operation is mistakenly caused by touching the sensor or the start switch, etc. Since energization of the heater is stopped and the temperature rise of the heater is stopped, the occurrence of wrapping of the tape on the backing plate due to the welding of the start end and end of the tape in the absence of a bundled object is minimized. be able to.
[0026]
Therefore, the troublesome work of removing the tape wound around the backing plate due to malfunction by using a cutter or scissors as in the case of a conventional strapping machine is basically eliminated. You can get a chance.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is an operation flowchart of FIG. 1;
3A is a timing chart during normal operation in FIG. 1, and B is a timing chart during malfunction in FIG.
FIG. 4 is a perspective view showing an outline of an external structure of a conventional strapping machine.
5A is a view for explaining a tape guide mechanism provided in the strapping machine of FIG. 4, FIG. 5B is a side view of A partially omitted, and C is a cross-sectional view of Aa ′ partially omitted.
6A is a partial cross-sectional view of FIG. 4, and B is a view showing details of the heater assembly in A. FIG.
7 is a view for explaining an initial state (waiting state) in which a tape loop of the strapping machine of FIG. 4 is formed, A is a perspective view, B is a cross-sectional view of Aa ′, and C is a front view. FIG.
8A and 8B are views for explaining the tape guide opening operation of the strapping machine of FIG. 4, A is a perspective view, B is a cross-sectional view, and C is a front view.
FIGS. 9A and 9B are diagrams for explaining the tape tightening operation of the strapping machine of FIG. 4, A is a perspective view, and B is a front view.
10 is a front view for explaining the tape welding operation of the strapping machine of FIG. 4; FIG.
FIGS. 11A and 11B are diagrams for explaining the backward movement of the receiving plate of the strapping machine of FIG. 4, A is a perspective view, B is a front view, and C is a cross-sectional view.
12A and 12B are diagrams for explaining the tape guide closing operation of the strapping machine of FIG. 4, A is a perspective view, B is a cross-sectional view, and C is a front view.
13 is a view for explaining the forward movement of the receiving plate of the strapping machine of FIG. 4, A is a perspective view, B is a cross-sectional view, and C is a front view. FIG.

Claims (2)

The tape is fed out from the tape roll to form a tape loop, and the loop is tightened to tie the tape to the object to be bound placed on the receiving plate, and the tape and the lower surface of the object to be bound are bound. A banding machine that performs separation cutting from a tape roll of a tape hung on the lower surface side of the receiving plate interposed therebetween and welding of its start and end parts,
When the sensor detects the object to be bound, in the strapping machine configured to start a series of operations of the strapping, cutting, welding, and next loop formation,
The heater for performing the welding is assumed to start energization after the start of the operation,
Means for monitoring the output signal of the sensor and determining the presence or absence of a bound object until the welding is started after the operation starts;
When it is determined that there is no material to be bound by the determination means, the band hanging device, characterized in that a means for stopping the energization of the upper Kihi over data. The tape is fed out from the tape roll to form a tape loop, and the loop is tightened to tie the tape to the object to be bound placed on the receiving plate, and the tape and the lower surface of the object to be bound are bound. A banding machine that performs separation cutting from a tape roll of a tape hung on the lower surface side of the receiving plate interposed therebetween and welding of its start and end parts,
When the sensor senses the object to be bound and the start switch is pressed, the welding is performed in a strapping machine configured to start a series of operations of strapping, cutting, welding, and next loop formation. The heater is supposed to start energization after the above operation starts,
Means for monitoring the output signal of the sensor and determining the presence or absence of a bound object until the welding is started after the operation starts;
When it is determined that there is no material to be bound by the determination means, the band hanging device, characterized in that a means for stopping the energization of the upper Kihi over data.

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