JPH0144565B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a binding device for binding objects to be bound using a thermal adhesive tape as a binding tape.

(Prior 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 has adhered, the binding force may be weak and the objects may not be bound. Another drawback is that the adhesive sticks to the objects to be bound, making it difficult to perform tight winding.

In order to eliminate this problem with single-sided adhesive tapes, binding machines using heat-sealable tapes as binding tapes have been developed.

For example, the binding machine disclosed in Japanese Patent Application Laid-Open No. 54-24199 is provided with a heater that is exposed on the top surface of the workbench and whose top surface is a flat surface, and between the heater and the pressure welding rod. The tape is crimped and heat fused.

(Problems to be Solved by the Invention) When the heat-adhesive tape is pressure-bonded between the flat surfaces of the heater and the press-contact rod in this way, the following problems occur.

That is, heat is conducted more easily in an object with a larger heat capacity. Therefore, if the heat capacity of the pressure welding rod is large, when the pressure welding rod and the heater are pressed together, the heat of the heater will be
The temperature of the heater is lowered by the heat absorbed by the pressure welding rod, and the temperature of the pressure welding rod itself is difficult to rise because it has a large heat capacity.

Furthermore, if the pressure rod is made smaller in order to avoid the above-mentioned physical phenomenon, there is a problem that the heat-sealed area of the tape becomes smaller, resulting in incomplete binding.

The present invention has been made in order to solve the above problems, and aims to provide a binding device in which the pressure contact rod is made as thin as possible to reduce its heat capacity, and the heat-sealed area of the tape is increased. be.

(Means for Solving the Problems) That is, the present invention provides a means for preventing both windings of the binding tape between the pressure receiving base of the tape holding device provided on the base side and the pressing member provided on the head portion of the binding arm. In a binding device that presses and holds an end portion of the turn, a heating member having a concave groove at the top is provided adjacent to the pressure receiving base,
A fusing member having a distal end portion that fits into the groove of the heating member is provided at the head portion of the binding arm.

(Function) With this configuration, the tape sandwiched between the groove of the heating member and the tip of the welding member is fused over a wide range along the surface of the groove.

On the other hand, the tip of the fusing member is tapered to fit into the groove, and its heat capacity is small, so the temperature of the tip itself increases without lowering the temperature of the heater. Apply heat from both sides to completely fuse.

At the same time, the tape is pushed into the groove and receives a strong pressure force.

(Example) Examples of the present invention will be described below based on the drawings.

In FIG. 1, reference numeral 1 denotes a base, 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 movable up and down, and a spring 4 is attached to the binding arm 3.
is biased in the upright direction 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 fusion tape 6 includes polyethylene,
A tape made of hot melt synthetic resin such as vinyl chloride or polypropylene, or a tape made of paper, synthetic paper, or a composite base material thereof is used. The binding arm 3 includes a guide roller 7,
8 and 9 are provided, the front part of the heat sealing tape 6 is wrapped around these guide rollers 7, 8, and 9, and the leading end 6a' of the heat sealing tape 6 is held by a tape holding device 10, which will be described later. It is something that will be done. A rotation drive means 11 for the tape reel 5 is provided between the base of the binding arm 3 and the tape reel 5, and when the binding arm 3 is rotated in the direction of the arrow in FIG. The heat-sealing tape 6 is rotated in this direction so that tension is applied to the front portion of the heat-sealing tape 6.
Note that the rotation drive means 11 of the tape reel 5 has a clutch (not shown), and the binding arm 3
Except when rotating in the direction of arrow A in Figure 1,
The tape reel 5 is rotatable.

The free end of the binding arm 3 is a head portion 12, and a handle 13 is attached near the head portion 12. As shown in an enlarged view in FIG. 2, the head portion 12 is provided with a tape pushing rod 14, a pressing member 15, a cutting blade 16, and a fusing member 17. The tape pushing rod 14 and the pressing member 15 each have a spring 1
8 and 19, respectively, to urge the tape holding device 10 side. The pressing member 15 is inserted into a guide hole 17a provided in the fusion member 17, and a rubber member 15a is fixed to the tip of the pressing member 15. The distal end portion 17b of the fusing member 17 has a wedge-shaped cross section.

The tape holding device 10 includes a tape holding body 20, a clamping rod 21, a heating member 22, and a pressure receiving base 23.
As shown in the figure, when the binding arm 3 is in an upright state, the tip 6a' of the heat-sealing tape is held together. The pressure receiving base 23 is made of a heat-resistant plastic material, and the upper part of the pressure receiving base 23 is located between the tape holder 20 and the heating member 22, and the upper surface of the pressure receiving base 23 is heated in cooperation with the pressing member 15. This is a clamping surface 23a that clamps both winding ends of the wrapping tape 6. The heating member 22 has a heater 24, and a fusing member 17 is provided on the upper part of the heating member 22.
A V-groove 22a is formed into which the tip portion 17b of the holder is allowed to enter. Reference numeral 25 indicates an object to be bound, and reference numeral 26 indicates a mounting table. is leaf protection board 2
7 is provided. Heating member 22 and leaf protection board 2
A heat insulating member 28 is provided between the housing and the housing 7 to prevent heat loss as much as possible. Leaf protection board 27
has a groove formed in its upper part, and a heat-sealing tape guide surface 2 at the bottom of the groove from the base 1 to the leaf protection plate 27.
7a is equal to the height from the base 1 to the clamping surface 23a of the pressure receiving base 23, and the height from the base to the top surface of the heating member 22 is equal to the height from the base 1 to the leaf guard plate 27. The height of the guide surface 27a is lower than that of the guide surface 27a.

Next, the operation of the thus configured binding device will be explained.

First, the objects to be bound 25 are placed on the mounting table 26.
At this time, the thermal adhesive tape 6 is pulled out from the tape reel 5, and the adhesive tape 6 is half-wound around the object 25 to be bound. Next, in FIG. 1, the binding arm 3 is rotated in the direction of arrow A. Then, the fusion tape is wound around the remaining surface of the object to be bound 25,
A gap X is created in the vicinity of both winding ends 6a and 6b. When the binding arm 3 is further rotated in the direction of arrow A, both winding ends 6a and 6b are sandwiched between the pressing member 15 and the pressure receiving table 23. Immediately after this, the heat sealing tape 6 is cut by the cutting blade 16. At the same time, the tip end 17b of the fusion member 17 is attached to the V-groove 2.
Enter 2a. Furthermore, when the binding arm 3 is rotated in the direction of arrow A, the tip 17b of the fusing member 17 engages with the V-groove 22a of the heating member 22, and both winding ends 6a, 6b of the binding tape 6 are heated. Since the winding ends 6a and 6b are welded together under pressure, both winding ends 6a and 6b are heat-fused.

In this heat fusion, both winding ends 6a, 6b
The V-groove 2 is formed by the tip 17a of the fusion member 17.
It is pushed into 2a and crimped with strong force.

Further, the tip portion 17b is tapered to fit into the V-groove and has a small heat capacity, so that the heating member 22
The temperature of the V-groove 22a is maintained without removing much heat from the V-groove 22a, and the temperature of the tip portion 17b itself is increased.

The above action reduces the heat capacity of the heating member 22 to the tip portion 1.
Since it is sufficiently large compared to 7b, it becomes more effective.

As a result, both winding ends 6a, 6 which are sandwiched
b is heated from both sides.

In this way, due to the synergistic effect of the strong pressure bonding force and the heating from both sides, both winding ends 6a,
6b is completely thermally fused, and the fusion range is V
This is a wide range along the surface of the groove 22a.

Also, by pushing the winding ends 6a and 6b into the V-groove 22a, the object to be bound 25 is attached to the leaf guard plate 2.
7 (in the direction of the arrow in Figure 2).

Due to this pulling, the gap X is narrowed, and the objects 25 to be bound are strongly bound by the binding tape 6.

The above-mentioned pulling is achieved by making the clamping surface 23a and the heat-sealing tape guide surface 27a at the same height and passing the tape 6 between them, and by lowering the height of the V-groove 22a, so that the tape at the tip end 17a The amount of pushing down becomes larger, and the pulling force becomes even larger.

As a result, the gap X is narrowed down to a large extent, and the objects to be bound are bound with a strong force.

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

(1) If the distal end 17b of the fusion member 17 has a sharp blade structure, the engagement between the V groove 22a and the distal end 17b will cause the winding ends 6a, 6 to close at this engagement point.
b can be cut. In this case, the cutting blade 16 may not be provided.

(2) In the embodiment, an example in which the present invention is applied to a device for manually bundling objects has been described, but the present invention can also be applied to an automatic bundling device.

(3) In the embodiment, a V-groove is formed in the upper part of the heating member 22, but this is not limited to this, and a U-groove may be formed in the upper part of the heating member 22.

(4) Furthermore, the heating member may be provided on the binding arm, and the fusing member may be provided on the tape holding device.

〔Effect of the invention〕

As detailed above, according to the present invention, a groove is provided at the top of the heating member, and the tape is pushed into the groove by the fusing member having the tip that fits into the groove. The tape is heated from both sides to ensure its fusion, and to widen the fusion range.
Objects to be bound can be reliably bound using heat-sealing tape.

Further, by pushing the tape into the groove, the objects to be bound are drawn toward the heating member, which has an excellent effect of strongly binding the objects.

[Brief explanation of drawings]

FIG. 1 is a side view showing the overall configuration of a binding device according to the present invention. 2 is an enlarged partial side view showing the operating state of the binding device shown in FIG. 1; FIG. 6... Heat fusion tape, 10... Tape holding device, 12... Head part, 15... Pressing member, 22
... Heating member, 23 ... Pressure receiving table.

Claims (1)

[Claims] 1. In a binding device in which both winding ends of a binding tape are sandwiched and pressed between a pressure receiving base of a tape holding device provided on the base side and a pressing member provided in a head portion of a binding arm, the pressure receiving device is A binding characterized in that a heating member having a concave groove at the top is provided adjacent to the base, and a fusing member having a tip portion that fits into the concave groove of the heating member is provided at the head portion of the binding arm. Device.