JPH0260564B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a tape end heat-sealing method for a binding device that uses a heat-sealable tape as a binding tape.

[Conventional technology]

BACKGROUND ART Conventionally, there has been a binding device for binding objects such as green onions, and this conventional binding device uses a single-sided adhesive tape coated with an adhesive on one side as a binding tape. However, this single-sided adhesive tape has the disadvantage that its adhesive strength decreases when foreign matter such as dirt, dust, or water droplets adheres to the adhesive. Therefore, when objects to be bound are bound using a single-sided adhesive tape to which such foreign matter is attached, the objects may not be bound. Furthermore, in the case of objects to be bound, such as green onions, which are served at the table, the adhesive is attached to the objects, which is not preferable from a sanitary standpoint. Furthermore, there is also the drawback that the adhesive sticks to the objects to be bound, making it difficult to perform tight winding.

Nowadays, heat-adhesive tapes have come into use to solve the problem of single-sided adhesive tapes.

[Problem to be solved by the invention]

However, if this heat-adhesive tape is not heated enough and the fusion is insufficient, the fused part will peel off and the binding will be incomplete, and if it is heated too much, the heat-adhesive tape will melt and break. Otherwise, there is a problem that the part becomes extremely weak and breaks.

In particular, workers who handle this type of tying device often do not consider the above-mentioned state of heat fusion, and the crimping time varies depending on the worker. It is desirable to have one.

The present invention aims to provide a tape end heat-sealing method for a binding device that has the above-mentioned functions and can reliably heat-seal heat-sealable tapes.

[Means for Solving the Problems] In order to solve the above problems, the present invention includes a binding arm having a cutting blade and a crimping rod, and a tape holding device having a pressure receiving surface that clamps the cut end of the binding tape. , a binding method using a binding device that moves the binding arm up and down to wind the binding tape around the object to be bound, and overlaps both winding ends with each other and crimps and cuts the binding tape. First, by pressing down, both winding ends of the binding tape are overlapped with each other and crimped and clamped between the crimping rod and the pressure receiving surface, and then by pressing down the binding arm, the heating member is placed between the two winding ends of the binding tape which are crimped and clamped. It is characterized in that the heating member is pressed against the overlapping portion of the binding arm to heat-seal it, and then the binding arm is pushed down to draw in the heating member and finish the heat-sealing.

[Effect]

With this configuration, when the worker presses down the binding arm, the overlapping portion of both winding ends of the binding tape is first held, and then the heating is stopped after being heat fused.

In this way, when heat-sealing the binding tape, the pushing-down motion of the bundling arm is not stopped halfway, but the heat-sealing and the heating are stopped in the process of continuous pushing-down motions, so the heat-sealing time is: There is not much variation depending on the worker.

〔Example〕

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

First, an apparatus for carrying out the method of the present invention will be explained.

In FIG. 1, reference numeral 1 denotes a base, and a support frame 2 is attached to the approximate center of the base. A binding arm 3 is pivotally attached to the support frame 2 so as to be able to be raised and lowered. is energized by. Reference numeral 5 denotes a tape reel, and a heat-sealing tape 6 as a binding tape is attached to this tape reel 5. This heat-sealing tape 6 is made of a resin such as polyethylene, vinyl chloride, polypropylene, or the like. In addition to these tapes, tapes made of paper, synthetic paper, and composite base materials thereof may also be used. The binding arm 3 is provided with guide rollers 7, 8, and 9, and the front part of the heat-sealing tape 6 is wrapped around the guide rollers 7, 8, and 9, and the leading end of the heat-sealing tape 6 is It is held by a tape holding device 10, which will be described later. tied arm 3
A rotation drive means 11 for the tape reel 5 is provided between the base of the tape reel 5 and the tape reel 5, so that when the binding arm 3 is rotated in the direction of arrow A in FIG. It is rotated to apply tension to the heat-sealing tape 6. In addition,
The rotation drive means 11 for the tape reel 5 has a clutch (not shown), and the tape reel 5 is rotatable except when the binding arm 3 is rotated in the direction of arrow A in FIG. It is like that.

The free end portion of the binding arm 3 is a head portion 12, and a handle 13 is attached near the head portion 12. The head portion 12 is provided with a tape pressing rod 14, a crimp rod 15, and a cutting blade 16. The tape pressing rod 14 and the crimp rod 15 are biased by springs 17 and 18, respectively. As shown in FIG. 2, the crimp rod 15 is configured such that its tip portion protrudes outward from between the side frames 19, which form part of the head portion 12. A rubber crimping member 20 is attached to the tip of the crimping rod 15.

The tape holding device 10 has side plates 21 and 22, as shown enlarged in FIGS. 3 and 4,
Both side plates 21 and 22 are attached to the base 1. A tape holder 23 and a pressure receiving member 24 are attached between the side plates 21 and 22. The tape holder 23 is rotatable in only one direction, and is supported by a spring (not shown) as shown in FIG.
The distal end portion of the heat-sealing tape 6 is held in cooperation with the holding rod 25 which is urged to rotate in the direction of arrow C.

The pressure receiving member 24 is made of a heat insulating material, and its upper surface is a pressure receiving surface 24a.
4 is formed with a guide groove 26 extending in the vertical direction. A heating member 27 is inserted into this guide groove 26 . The heating member 27 has a rectangular parallelepiped shape, as shown in FIGS. 5 and 6, and has three heaters 28 therein.
In addition, at least one of these three heaters,
A configuration may also be provided in which a temperature control device such as a temperature detection sensor or a thermostat is provided. The heater 28 is connected to a commercial power source through a lead wire (not shown), and is energized as necessary while the binding device is in use. The upper surface 27a of the heating member 27 is a surface for heating and welding the ends of both windings of the heat-sealing tape 6 in cooperation with the crimp rod 15. In the process of placing the object 29 on the mounting table 30 and winding the heat-adhesive tape 6 around the object 29, it is necessary to prevent both winding ends of the heat-adhesive tape 6 from being heated and burned out. It is separated from the pressure receiving surface 24a by a predetermined distance.

The tape holding device 10 is provided with means for moving the heating member 27 up and down. The means for vertically moving the heating member 27 is generally composed of a vertically moving rod 31 and a support member 32. The support member 32 has a substantially L-shaped cross section, on which the heating member 27 is placed, and a spring 33 is stretched between the support member 32 and the base 1. In Figure 3, it is biased in the direction of arrow D. A guide plate 34 is attached to the side plate 21, and the vertically movable rod 31 is inserted through this guide plate 34 and guided in the vertical direction, and the lower part of the vertically movable rod 31 is bifurcated. An intermediary member 36 is rotatably attached to a shaft 35 extending between the two. The intermediary member 36 includes
An engaging portion 36a is formed, and an engaging member 38 that rotates integrally with the rotating shaft 37 is provided on the side plate 21 side. The engaging member 38 has an engaging portion 38a that engages with the engaging portion 36a, and a protrusion 28b that engages with the lower part of the guide plate 34.

A protrusion 39 is integrally formed on the vertically movable rod 31, and a spring 40 is interposed between the protrusion 39 and the base 1, so that the vertically movable rod 31 is biased in the direction of arrow E in FIG. ing. A spring 41 is stretched between the intermediary member 36 and the side plate 21, and the intermediary member 36
In FIG. 3, it is urged to rotate in the direction of arrow F about the shaft 35, so that the engaging portion 36a faces the engaging portion 38a of the engaging member 38. In addition, 42 is
This is a pin for a stopper. The engagement member 38 is biased to rotate in the direction of arrow G in FIG. 3 by the spring 43, so that the projection 38b comes into contact with the lower surface of the guide plate 34 and stops rotating at a predetermined position. It's summery. A support pin 44 is implanted in the rotation shaft 37, and the support pin 44 contacts the support member 32 to move the support member 32 and the heating member 37 up and down. The upper surface of the vertically movable rod 31 is brought into contact with the lower surface 19a of the side frame 19, and the vertically movable rod 31 is moved up and down by this side frame 19. Here, the lower surface 1 of the side frame 19
9a is configured to come into contact with the vertically movable rod 31 after the pressure bonding member 20 comes into contact with the pressure receiving surface 24a. A pin 45 is embedded in the side plate 21, and when the vertically movable rod 31 is lowered a predetermined distance, the intermediate member 3
One end of 6 abuts against this pin 45, and the intermediate member 3
6 is rotated in the direction opposite to the direction of arrow F in FIG. 3, so that the intermediary member 36 and the engagement member 28 are disengaged from each other.

Next, a method for heat-sealing the tape end of the binding device according to the present invention using the device configured as described above will be described.

In the process of placing the objects 29 to be bound on the mounting table 30, the heat-sealing tape 6 is pulled out to a desired length. Next, operate the handle 13 to open the head section 12.
The binding arm 3 is moved in the direction in which the
Defeat. As a result, the heat-sealing tape 6 is wound around the object 29 to be bound. Both winding ends of this heat-sealing tape 6 are held between the pressure bonding member 20 and the pressure receiving member 24. After that, the lower surface 1 of the side frame 19
9a comes into contact with the vertically movable rod 31, and the side frame 19
The tapered surface 19b contacts the clamping rod 25, and the clamping rod 25 is separated from the tape holder 23. tied arm 3
By further pushing down, the vertical movement rod 31 is lowered by being pushed downward by the side frame 19, and the intermediate member 3
6 engages with the engaging member 38, and the engaging member 38 rotates in the direction opposite to the direction of arrow G in FIG. Therefore, the rotating shaft 37 integrated with the engaging member 38 will rotate in the same direction, and the support pin 44 will lift the heating member 27 together with the supporting member 32. As a result, both winding ends of the thermal adhesive tape 6 are heated while being under pressure, and both winding ends are fused. Further, during this fusion bonding, the heat fusion tape 6 is cut by the cutting blade 16. When the binding arm 3 is subsequently lowered, the vertically movable rod 31 is further lowered, and the intermediate member 36 comes into contact with the pin 45, and the intermediate member 36 rotates in the direction opposite to the direction of arrow F in FIG.
6 and the engagement member 38 are released. Therefore, the engaging member 38 rotates in the direction of arrow G in FIG. 3, and the heating member 27 descends, thus completing the fusion process. In this way, in the process of continuous operation of tilting the binding arm 3, the heat-sealing tape 6 is wound around the object to be bound 29, the ends of both windings are held, the heat-sealed and cut, and the heating is released. A series of steps are carried out reliably. Note that when the binding arm 3 stands up, the vertically movable rod 31 returns to its original position by the biasing force of the spring 40.

According to this embodiment, fusing can be performed by simply adding a heating member and a means for vertically moving the heating member to the tape holding device of the conventional structure, so that the conventional structure can be fused without making any major changes. A binding device can be manufactured. In addition, the heating member 27 and the pressure bonding member 2
Since the structure is such that both ends of the windings are pressurized and fused together with 0, fusion bonding can be performed reliably. Furthermore, since the pressure bonding member is made of rubber, even a thin heat-adhesive tape can be securely clamped.

FIG. 7 shows a reference example in which the pressure-receiving member 24 is moved up and down instead of the heating member 27 moved up and down, and the other configurations are approximately the same as the above-mentioned device example. The same components as those in the example are given the same reference numerals, and only the different points will be explained.

In FIG. 8, spring receivers 46 are formed on both sides of the pressure receiving member 24, and a spring 47 is interposed between the spring receivers 46 and the base 1.
The spring 47 urges the heating member 27 upwardly so that the upper surface 27a of the heating member 27 is separated from the pressure receiving surface 24a by a predetermined distance.

The lower surface of the side frame 19 is brought into contact with the upper surface of the spring receiver 46, and the biasing force of the spring 47 is larger than the biasing force of the spring 17 that biases the crimp rod 15. After both winding ends of the wrapping tape 6 are sandwiched between the pressure-bonding rod 15 and the pressure-receiving member 24, the pressure-receiving member 24 is lowered by the side frame 19.

In the case of the above device example, the lead wire connecting the heater 28 to the power source is bent by the vertical movement of the heating member 27, and there is a risk of wire breakage, but in the case of this reference example, the heating member 27 is Since it is fixed, there is no risk of that happening. Further, its configuration is also simplified compared to the device example described above.

Although the embodiments have been described above, the present invention is not limited thereto and includes the following.

(1) In the embodiment, a current is constantly supplied to the heating member 27 during use, but both winding ends of the heat-sealing tape 6 are held between the crimp rod 15 and the pressure-receiving member 24. Therefore, it is also possible to construct the heating member 27 so that a current sufficient to fuse both ends of the windings is passed through the heating member 27.

(2) In both cases, the heating member 27 is
Although the configuration is such that the heating member 27 is provided in the head portion 12, heat fusion can be similarly achieved even if the heating member 27 is provided in the head portion 12.

(3) Although an example in which the present invention is applied to a manual binding device has been described, heat-sealing can be similarly performed with an automatic binding device that can automatically bundle objects.

(4) Although the configuration is such that the heater is inserted into and attached to the heating member, the heater and the heating member can be similarly heat-sealed even if they are integrally formed.

〔Effect of the invention〕

As detailed above, according to the present invention, in the continuous operation process in which the worker pushes down the binding arm, the operations of pinching both winding ends of the tape, fusing by compression heating, cutting, and releasing the heating can be performed. can.

In this way, all binding is completed by pushing down the binding arm, so the heating time does not vary greatly depending on the operator, and the tape can be reliably fused.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the overall configuration of a binding device for carrying out the method according to the present invention. FIG. 2 is a schematic front view of the binding device shown in FIG. 1. FIG. 3 is a schematic side view of a tape holding device for carrying out the method according to the invention. FIG. 4 is a view of the main parts of FIG. 3 as viewed from the direction of arrow X. FIG. 5 is a front sectional view of a heating element for carrying out the method according to the invention. FIG. 6 is a side view of the heating member. FIG. 7 is a schematic configuration diagram of a reference example. 10...Tape holding device, 12...Head portion, 27
...Heating member.

Claims (1)

[Scope of Claims] 1. A tape holding device having a binding arm having a cutting blade and a crimping rod and a pressure-receiving surface that clamps the cut end of the binding tape, and binding the object to be bound by moving the binding arm up and down. In a binding method using a binding device that winds a tape, overlaps both ends of the tape, and crimps and cuts the ends, the binding arm is pushed down to first overlap the ends of both ends of the binding tape with each other. Then, the crimping rod and the pressure-receiving surface are crimped and clamped, and then the binding arm is pushed down to press the heating member against the overlapping portion of the ends of both windings of the binding tape that are crimped and clamped to thermally fuse them. A method for heat-sealing tape ends of a binding device, characterized in that the heating member is pulled in by pushing down the binding arm to complete the heat-sealing.