JPH0139926B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to binding of root and stem vegetables and flowers such as asparagus, green onions, turnips, wasabi, chrysanthemums, and carnations, books, magazines, and foods. This invention relates to a binding machine used for bundling and bundling various items such as industrial materials.

(Prior Art) As described in Japanese Patent Application Laid-open No. 59-221213, which is an earlier application of the present applicant, as a conventional vegetable binding machine,
A pair of driving rolls is provided at a suitable position in the front of the binding table, and a binding arm which is rotated downward so as to fit over the vegetable bundles placed on the table, and a binding tape feeding part are provided at the back position. is provided so that the binding tape is hung on the binding arm and its tip is clamped to the pair of drive rolls, and the open free end of the binding arm that contacts in the straddling state and the binding table side a first detection means for detecting the vegetable bundles placed on the binding table and activating the driving means for the binding arm; a second detection means for detecting the point in time when the heat welding means is fitted and in contact and energizing the heat welding means and stopping the drive means; and a second detection means for setting the energization time of the heat welding means and reversing the drive means upon completion of the energization. a timer to be driven; a micro-feeding means for driving the driving roll pair and pulling the binding tape in conjunction with the backward movement of the binding arm; and a third mechanism for detecting the completion of the backward movement of the binding arm and stopping the driving means. There is a vegetable binding machine characterized by being equipped with a detection means.

Also, Utility Model Publication No. 56-37922 and JP-A-59-
No. 51011 discloses a binding machine that uses both a heat welding means and a cutting means such as a cutter.

(Problems to be solved by the invention) However, such conventional binding machines are
In the case of Publication No. 59-221213, a heat welding means is simply formed between the open free end of the bundling arm that comes into contact with the bundling arm in a straddling state and the bundling stand side, and the heat welding means is energized at the time of bundling to produce vegetable bundles. As the binding tape is welded and the binding arm is moved back to its original position immediately after the energization time has elapsed, the binding tape is released before the welded part of the binding tape has sufficiently cooled and solidified, and the binding tape is released and the vegetable bundles are There was a problem in that the welded portion of the binding tape was likely to peel off due to the repulsive force of the tape or other external forces.

Furthermore, after the binding tape is thermally welded during the above-mentioned binding, the drive roll pair is driven in the tape ejection direction in conjunction with the return movement of the binding arm, and a tensile force is applied to the welded portion of the binding tape to divide the welded portion into two. Since the welding and cutting of the binding tape wrapped around the vegetable bundles are done in the same place, excessive force is applied to the welded part of the binding tape, making it easy for the welded part to peel off even when tied together. However, there was a problem that the binding work could not be done smoothly.

Also, Publication No. 56-37922 and Japanese Unexamined Patent Publication No. 59
In the case of Japanese Patent No. 51011, the tape is separated after welding by a cutting means such as a cutter, which causes problems such as injuries caused by the cutter or the like during operation.

(Means for Solving the Problems) In view of the problems of the conventional art, the present inventor has conducted extensive research and has provided a binding machine that has solved the above-mentioned problems.

The present invention will be described below with reference to the drawings.

1 and 2 are side views showing one embodiment of the binding machine of the present invention. 1 and 2, a fixing block 2 is provided near the front of the base 1, a welding section 3 is provided on the fixing block 2, and this welding section 3 has a binding tape (described later) on the front side. Drive roll pair 4, 5 that clamps the tip of 27
is mounted on the shaft. It is preferable that the tape guides 6 and 7 are provided so as to be in contact with the pair of drive rolls 4 and 5, so that the binding tape 27, which will be described later, will not be wrapped around the pair of drive rolls 4 and 5. The roll surfaces of the pair of driving rolls 4 and 5 may be simply smooth, but the surface of one roll may be provided with a number of circumferential grooves lined up, and the other roll may have circumferential grooves for guiding the binding tape. If one piece is provided, the binding tape 27 can be clamped straight at almost right angles to the axes of the pair of drive rolls 4 and 5 without meandering, and displacement of the thermally welded portion of the binding tape 27, which will be described later, is less likely to occur, which is preferable. Further, a binding table 8 is installed on the rear side of the welding work section 3. This binding table 8 is integrally provided with a switch 9 on one side, mounting portions are provided on both front and rear ends, and support for installing the binding table 8 on the base 1 at the rear position of the binding table 8. A column 10 is erected, and one attachment part of the binding table 8 is detachably attached to the support column 10. Further, by selectively attaching one of the attachment parts of the binding table 8 to the support column 10, the switch 9 is positioned in front of or on the other side of the binding table 8 in FIG. This switch 9 is for starting a drive means for a binding arm 11, which will be described later, and specifically, for starting a forward/reverse drive motor 13.

The binding arm 11 has a support shaft 12 attached to the above-mentioned support column 10.
It is pivotably mounted by a support shaft 12, and is freely rotatable up and down about a support shaft 12. In the case of FIGS. 1 and 2, the binding arm 11 is driven by a forward/reverse drive motor 1 mounted on the base 1.
3 is transmitted to the support shaft 12 via the link mechanism 14, and the binding arm 11 is rotated. Therefore, the binding arm 11 is rotated by the activation of the motor 13, and during binding, it is rotated downward and attaches the second bundled object (A) placed on the binding table 8.
Straddle it as shown in the picture. Note that the binding arm 11 may be rotatably connected to the motor 13 via a gear instead of the link mechanism 14.

When the free end 15 of the binding arm 11 is straddled,
In other words, when bundling, they are brought into contact with the welding section 3 as shown in FIG. 2. In addition, as shown in FIG.
6. A crimp rod 17 and a tape guide and presser foot 18 are provided side by side, and the welding attachment part 3 has a seat plate 19 corresponding to the heater rod 16, a heater rod 20 corresponding to the crimp rod 17, and a tape guide and presser foot 18. A corresponding partition plate 21 is provided. The heater rod 16 has a heater 22 at its lower end, is pressed by a coil spring 23 so as to protrude downward, and a binding tape 27 is clamped between the heater rod 16 and the seat plate 19, thereby forming thermal welding means. In addition, the heater rod 20 has a heater 2 at the top.
The binding tape 27 is sandwiched between the crimping rod 17 fixed to the binding arm 11, and is thermally welded and cut. The means are configured. The tape guide/presser 18 is pressed to protrude downward by a coil spring 26, and is adapted to clamp the binding tape 27 between it and the partition plate 21.

Reference numeral 28 denotes a support rod that is installed above the support column 10 and at the back of the binding arm 11, and a guide roll 29 is pivotally supported at the tip of the support rod. In the case of FIGS. 1 and 2, a guide roll 30 is also pivotally supported on the binding arm 11. Binding arm 11
Further, the back position is a loading part for the binding tape 27, that is, a binding tape feeding part 31, and a wound bundle 32 of the binding tape 27 is loaded into this part 31. This winding bundle 32 is inserted into and supported by a rotation center shaft 35 whose both ends are supported by a pedestal 33 and a support rod 34.
The support rod 34 is movable to raise and lower the winding bundle 32.
is detachable from one end of the rotation center shaft 35. In the case of FIG. 1, the lower end of the support rod 34 is attached to the side surface of the base 1 via a hinge, and a support rod presser 36 is further pivotally attached to the side surface of the base 1 so as to be rotatable along the side surface. , a receiver 37 is attached between the support rod 34 and the support rod presser 36. The support rod 34 can be raised and lowered by rotating in a direction substantially perpendicular to the side surface of the base 1, and the rotation center axis 35
When the support rod 34 is in the upright state, the support rod presser 36 is received by the receiver 37 so as to press the lower end of the support rod 34 against the side surface of the base 1. Further, when replacing the winding bundle 32, the support bar presser 36 is rotated in a direction in which it is removed from the receiver 37, the support bar 34 is rotated downward, and the end of the rotation center shaft 35 is opened. Ru.

Further, the winding bundle 32 may be simply wound in a record manner by winding the binding tape 27 in the width of the tape, but if it is wound in a traverse manner in which the binding tape 27 is wound in the width direction of the tape,
This is preferable because the length of one roll of tape is increased, the number of tape replacements is reduced, and workability is improved. In the case of this traverse winding, a plurality of guide rolls 29, 30
It is preferable to provide the guide rolls 29, 30 with a substantially drum-shaped shape, since twisting of the binding tape 27 and displacement from the guide rolls 29, 30 can be prevented and the binding tape 27 can be smoothly fed out. The binding tape 27 is made of thermoplastic resin, and is a laminated tape in which two layers of resins having different melting points are laminated, and is wound so that the side with a lower melting point is in contact with the bundle during binding. Further, the dimensions of the binding tape 27 are preferably in the range of 5 to 20 m/m in width and 0.05 to 0.3 m/m in thickness, but are not particularly limited to these ranges.

FIG. 3 shows a configuration for automatically operating the tying machine configured as described above, and is an enlarged view of essential parts on the opposite side of FIG. 1. A switching lever 38 is fixed to the support shaft 12 of the binding arm 11, and the lever 38 is fixed to the upper surface of the base 1.
A pair of switches 39 and 40 sandwiching the binding arm 11 constitute the first and second detection means.
As the switch is rotated to the bottom dead center, the switching lever 38
kicks one switch 39, and as it moves back to top dead center, the switching lever 38 switches to the other switch 40.
Configured to kick. Both switches 39,
40 has a function of stopping the above-mentioned binding arm drive motor 13.

Further, one roll 4 of the pair of drive rolls 4 and 5 described above is provided with a driven link 42 having a ratchet mechanism 41, and a driven link 44 having a ratchet mechanism 43 is also provided on the rotation center shaft 35 of the winding bundle 32. These driven links 42, 4 are provided.
4 and the switching lever 38 are respectively the universal joint 4
5 and 45, and are connected by connecting rods 46 and 47, so that the rotation movement of the binding arm 11 causes both driven links 4 to
2 and 44 are designed to follow and rotate. At this time, on the driven link 42 side, rotational force is input to the drive roll 4 via the ratchet mechanism 41 only when the connecting rod 46 is pushed in the direction of the broken line arrow in FIG. 3 (that is, in the backward movement direction of the binding arm). It constitutes a so-called means for feeding a predetermined amount of binding tape. This rotating direction is the direction in which the drive roll pair 4, 5 pulls out the clamping tip 27' of the binding tape 27, and therefore the rolls 4 and 5 are assumed to be interlocked with gears, although not shown. Furthermore, on the driven link 44 side, the connecting rod 47
is pulled in the direction of the solid line arrow in FIG. 3 (that is, the binding direction of the binding arm), the rotation center shaft 35 and the winding bundle 32 are rotated via the ratchet mechanism 43 to extend the binding tape 27 to the required length on the binding arm 11 side. It is configured to be carried out.

(Function) Next, the binding operation of the binding machine of the present invention will be explained with reference to the control block diagram of FIG. In FIG. 6, 48 is a switch for energizing the heater 22, and 49 is a timer.

When bundling, turn on the switch 48 in advance and energize the heater 22 of the heat welding means to keep the heater 22 at a predetermined temperature, that is, the resin layer on the lower melting point side of the binding tape made of two layers of resins with different melting points can be welded. Keep at temperature. Of course, a temperature sensor is used to adjust the temperature of the heater 22 so that it does not rise excessively.
Next, as shown in FIG. 1, the binding tape 27 is pulled out from the winding bundle 32 and once wound around the guide rolls 29 and 30, the tip 27' of the binding arm 11 is driven as shown by the chain line through the free end 15 of the binding arm 11. It is clamped between roll pairs 4 and 5. At this time, the binding tape 2
7 is set so that the resin layer with a low melting point faces outward. Then, the bundle (A) is passed between the binding arm 11 and the binding table 8, and is pressed against the resin layer with a melting point lower than that of the binding tape 27, and while the tape 27 is further pulled out, the tape 27 and the bundle (A) are Place it on the binding table 8. When the switch 9 on the side of the binding table 8 is turned on, the drive motor 13 is driven to rotate in the normal direction, and its output is input to the support shaft 12 via the link mechanism 14, thereby rotating the binding arm 11 downward. As a result, as shown in FIG.
Wind 7.

At this time, as the binding tape 11 rotates downward, the connecting rod 47 is pushed in the direction of the solid arrow in FIG.
2 is inputted with a rotational force in the direction opposite to the tape feeding direction, that is, in the tape rewinding direction, so that the binding tape 27 is wound around the bundle (A) without loosening due to this unwinding. In addition, as shown in FIG. 4, at the bottom dead center of the rotation, there is a
7 and the heater rod 20, and between the tape guide/presser 18 and the partition plate 21, the binding tape 27 is double sandwiched so that the resin layers with low melting points face each other. Further, at the bottom dead center of the rotation, the switch 39, which is the first detection means, is turned on, the drive motor 13 is stopped, and the state shown in FIG. 4 is maintained, and the heater 22 of the heater rod 16 is stopped from being energized. The timer 49 and the heater 24 of the heater rod 20 are energized in parallel, and the heater 24 is heated to a temperature that can melt the high melting point resin layer of the binding tape 27.
The double portions 50 of 7 are thermally welded and integrated, and the used binding tape portion 27'' wound around the bundle (A) is closed in an annular shape.

The timer 49 starts the drive motor 1 after a predetermined period of time has elapsed.
3 is reversed, the heater 22 starts to be energized, and the heater 24 is stopped. Therefore, the binding arm 11 starts to move backward, but the binding tape 2
In the double portion 50 of 9, the inner resin layer with a low melting point is thermally welded to each other by the heat of the heater 22 in the portion clamped between the heater rod 16 and the seat plate 19, and the temperature of the heater 22 is lowered. Along with this, the heat-welded portion is cooled and solidified. Further, the entire binding tape 27 is thermally cut by the heat of the heater 24, which is higher in temperature than the heater 22, at the portion clamped between the crimp rod 17 and the heater rod 20. The binding tape 27 is fused and cut. By cutting the welded portion, the used binding tape portion 27'' is separated from the unused binding tape 27, and the tape tip 27' is connected to this unused binding tape 27. The return force of arm 11 is linked to link 47 → driven link 4
2->Input is input to the drive roll pair 4, 5 through the ratchet mechanism 41, these rotate, and the tape tip 2
7' is moved forward by a predetermined length, the binding arm 11 is released upward, and the binding table 8 is opened, so that the bound article (A) can be taken out. In addition, in this state, the tape tip 27' is integrally connected to the unused binding tape 27 as described above.
This connection part is connected to the drive roll pair 4, 5 as shown in FIG.
The tape leading end 27' is smoothly advanced by the tape guides 6 and 7 without being wound around the pair of drive rolls 4 and 5 until it passes through the binding tape 2.
7 has returned to the state shown by the chain line in FIG. 1, and by carrying the bundled object (A) onto the binding table 8 again, the binding work can be continued. Then, as the binding arm 11 moves back, the switch 40, which is the second detection means, is turned on, and the drive motor 13 is stopped.
One binding operation is completed.

(Effects of the Invention) As described in detail above, in the binding machine of the present invention, when the binding arm is fitted over the bundled object, the open free end of the binding arm and the welding part that are in contact with each other are located close to the bundled object. Since the thermal welding means and the thermal cutting means heated to a high temperature by the thermal welding means are arranged side by side in order from the side, when binding using a binding tape made of two layers of resin with different melting points laminated, the melting point will be lower. Using heat welding means, weld the used binding tape wound around the bundle so that it is in contact with the lower side of the bundle, and separate this used binding tape from the unused binding tape hung on the binding arm, and separate the unused binding tape from the unused binding tape hung on the binding arm. By separately welding and cutting the binding tape being used and the tip of the binding tape clamped to the drive roll pair using a high-temperature thermal cutting means, welding can be performed reliably and the welded part will not be removed by the binding machine. There is no need for cutting means such as a cutter, and the work is safe.

In addition, since the power supply to the heat welding means is temporarily stopped during bundling, the binding tape wound around the bundled items is welded, and as the heat welding means naturally cools, the welded portion is quickly cooled and solidified to strengthen it. The binding work can be carried out smoothly without the welded parts coming off immediately after taking out the bundled items as in the past.

[Brief explanation of drawings]

Fig. 1 shows an embodiment of the binding machine of the present invention, a side view with the binding arm raised, Fig. 2 a side view of the binding machine with the binding arm lowered, and Fig. 3 the same as Fig. 1. FIG. 4 is a side view of the main parts showing the state of the bundling machine of the present invention when bundling; FIG. 5 is a side view of the main parts showing the state of the bundling machine of the present invention when bundling is finished FIG. 6 is a simple control block diagram of the binding machine of the present invention. DESCRIPTION OF SYMBOLS 1... Base, 2... Fixed block, 3... Welding work part, 4, 5... Drive roll pair, 6, 7... Tape guide, 8... Binding stand, 9... Switch, 1
0... Support column, 11... Binding arm, 13... Drive motor, 15... Open free end, 16, 20... Heater rod, 17... Crimping rod, 18... Tape guide/presser, 19... Seat plate, 21... Partition plate, 22,
24... Heater, 23, 25, 26... Coil spring, 27... Binding tape, 31... Binding tape feeding section, 32... Winding bundle, 34... Support rod, 3
5...Rotation center axis, 36...Support bar presser, 37...
...Bracket, 38...Switching lever, 39, 40, 4
8... Switch, 41, 43... Ratchet mechanism, 42, 44... Driven link, 46, 47...
Continuation, 49...timer.

Claims (1)

[Claims] 1. A welding unit and a pair of driving rolls are provided at appropriate positions in the front of the binding table supported on the base, and a welding unit and a drive roll pair are provided at the back position so as to rotate downward so as to fit over the bundled items placed on the binding table. a binding arm with which the binding tape is wound, and a feeding section with a winding bundle of binding tape;
The binding tape is hung on the binding arm from this feeding part, and its tip is clamped to the pair of driving rolls, and the bundled tape is placed between the open free end of the binding arm and the welding work part, which are in contact with each other in the above-mentioned straddling state. A thermal welding means, a thermal welding means whose heating temperature is higher than that of the thermal welding means are arranged in order from the nearest side, a switch for starting the driving means for the binding arm, and a switch for energizing the thermal welding means; a first detection means for detecting the point in time when the binding arm straddles and abuts the binding table and stops energizing the thermal welding means, while energizing the thermal welding means and stopping the driving means; A timer that sets the energization stop time and the energization time of the thermal melt cutting means and drives the drive means in reverse after these times have elapsed, and drives the pair of drive rolls in conjunction with the return movement of the binding arm to pull the binding tape. A binding machine characterized by being provided with a predetermined amount feeding means and a second detection means for detecting completion of the backward movement of the binding arm and stopping the driving means.