JPH0597108A - Tying device by tape - Google Patents

Abstract

PURPOSE:To avoid the gripping error for tape ends by a method wherein a pair of receiving parts which constitute a heat-seal unit, and a pair of pressing parts which meet the receiving parts are respectively provided, and after bonding the winding start part and winding end part of a tape at two locations, the tape is cut at a location between those bonded parts. CONSTITUTION:A pair of receiving parts as pressing tables, which constitute 5 heat-seal unit, and a pair of pressing parts which meet the receiving parts are respectively provided. That is, a pair of receiving parts 19, 20 are provided to be separated to each other, at the same level as the surface of a table 1. Also, a pair of pressing parts 21, 22 are provided to be separated to each other, at the leading end of a tape placing member 10. In addition, in a gap between respective receiving parts 19, 20, a cutter 22 is made to advance and retreat. Either on the receiving parts or pressing parts, heaters for heat-sealing are provided. For example, respective heaters 25, 26 are provided to be apart on respective pressing parts 21, 22. By this method, after bonding the winding start part and winding end part of a tape at two locations, the tape is cut at a location between these bonded parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for binding articles by a tape, and more particularly to an improvement of a heat seal part for attaching a winding start portion and a winding end portion of a tape.

[0002]

2. Description of the Related Art Conventionally, as a device for binding articles by a tape, for example, a device disclosed in Japanese Utility Model Publication No. 62-1047 is known. As shown in FIGS. 11 and 12, a conventional binding device using a tape as disclosed in this publication has a table 1 for placing an object to be bound and an arm as a member for hanging a tape. 2 and a receiving member 3 provided on the table 1 for heat-sealing the tape and a crimping member 4 provided on the tip of the arm, and the tape T is fed from a reel 5. Is passed through the tip of the arm 2 and its end is held by the receiving member 3 and the tape presser 6.

The object to be bound A is applied to a tape stretched between the tape retainer 6 and the tip of the arm 2 and is placed at a predetermined position on the table 1 so as to extend the tape. After being set, the arm 2 is lowered, and the pressure contact between the pressure-bonding member 4 and the receiving member 3 urges the heater provided on either member to move the start and end portions of the tape. A cutter 7 which is heat-sealed and simultaneously provided near the crimping member 4 at the end of the arm.
Cut the tape with. At that time, a new tape end generated by the cutting is pressed by the side of the tape presser 6 and the accompanying portion 7a of the cutter 7, and when the arm 2 is lifted, the cutter 7 moves away from the position. The tape end was held between the portion 3a of the member 3 and the tape presser 6.

In such a conventional heat seal structure, when the cutter 7 is lifted, the tape terminal may be lifted by friction with the cutter 7, and thus the tape end may be lifted.
There is a problem in that the tape terminal is pulled out from the presser foot 6, that is, a gripping error occurs, and the next binding becomes impossible.

An object of the present invention is to solve the above-mentioned problems of the prior art, and therefore to provide a tying device by means of a tape, in which mistaking of a tape terminal can be completely avoided. That is.

[0006]

The features of the binding device according to the present invention include a table for placing a material to be bound, a tape hooking member and a heat seal portion, and the heat seal portion. Comprises a pair of receiving portions 19 and 20 spaced apart from each other, and a crimping portion 21 and 22 installed at the tip of the tape hanging member so as to abut against these receiving portions. The crimping portion is provided with a heat seal heater, and the tape is cut by a cutter that advances and retracts between the receiving portions.

[0007]

Immediately after the tape is wound around the object to be bound, the tape hanging member is lowered to heat-seal by the abutment between the receiving portion and the crimping portion, and the tape is wound at the beginning and the end of winding. The parts are attached in two places. The tape is then cut between the attachments by the action of the cutter, at which point one bundling cycle is completed and the retained tape portion is tapped from the reel and one attachment is made to the tape. Connected through the section.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 and FIG. 2 generally show a binding device based on this tape, in which a table 1 on which an object to be bound is placed is placed horizontally at an appropriate height position of its machine frame. A tape hanging member 10 which is operated upward and downward,
And the reel 11 in which the tape is stored is installed. Also, a tape retainer for holding a portion of the tape fed from the reel 11 under the table 1 so as to stretch the tape vertically or inclined through the table. A device 12 is provided. As the tape, those which can be attached to each other by heat sealing or welding are used.

Further, the device is provided with a tape by an object to be bound.
Tape feed member 1 for feeding tape in the direction in which the tape is fed out
As shown in FIG. 2, this member is composed of a plate piece bent at a right angle in this embodiment, and is moved along the guide rod 14 by an air cylinder or the like. Also,
As shown in FIG. 4, there is a pressing member 15 for temporarily pressing the back surface of the object to be bound A placed at the predetermined position of the table 1,
And the tape is guided by a series of rollers and is adapted to take up the slack of the tape by pulling on one of the rollers 16, which roller 16 is a tape hanging member. It is supported by a bracket 18 attached to the tip of the moving shaft of an air cylinder 17 fixed to 10.

As shown in FIG. 3, the bundling device based on this tape is characterized in that a receiving portion as a crimping base which constitutes a heat seal portion and a crimping portion which abuts against the crimping portion are paired, that is, The pair of receiving portions 19 and 20 is the table 1.
At a level approximately the same as the surface of the tape, and a pair of crimping portions 21, 22 are provided at the tip of the tape hanging member 10 at a distance from each other, and thus the receiving portion 19 is provided.
The crimp portion 21 and the receiving portion 20 are adapted to abut against the crimp portion 22.

The cutter 23 is configured to advance and retract in the gap between the receiving portions 19 and 20. Reference numeral 24 is an actuator such as an air cylinder. Heaters are installed on either the receiving portion or the crimping portion for heat sealing, and in this embodiment, the crimping portion 2 as shown in FIG.
A heater 25 is installed at the first position, and a heater 26 is installed at the crimping portion 22. Electric heaters are usually used as these heaters.

In this device, as described below,
The tape portion held by the push-pulling device 12 is connected to the tape fed out from the reel 11 even after cutting. Therefore, as shown in FIGS. 3 and 4, the tape pressing device is
It is preferred to include a pair of rollers 27, 28, between which the tape is held by being sandwiched, with one roller 28 abutting the other roller 27 by the resilience of a spring 29. The roller 27 is coaxially fixed and has a pinion gear 30 having a built-in one-way clutch and a rack 31 engaged with the pinion gear 30.
The air cylinder 32 for advancing and retracting the rack can rotate the tape in the pulling direction.

Each time the binding is performed, the rollers 27, 28
By this, the connected tape scraps are pulled out, and the drawn tape scraps may be inserted into a box or the like placed under the tape scraps. However, as shown in FIG. It is rolled up. The rotation of the reel 33 is carried out by a wheel 34 mounted coaxially thereto and having a built-in one-way clutch, a straight plate 35 in contact with the wheel 34, and an air cylinder 36 which reciprocates the plate. Reference numeral 37 is a tension spring for applying an appropriate contact pressure between the wheel 34 and the plate 35.

The holding member 15 is in a standby position below the table surface until the object A to be bound is placed at a predetermined position on the table and after the object is bound, and the object to be bound is placed on the table. Immediately before the tape hanging member 10 is lowered at a predetermined position, it appears on the table surface and plays a role of pressing the back surface of the object to be bound. In this example, the pressing member 15 has a shaft 3 as shown in FIG.
Link 3 consisting of a claw fixed to 8 and connected to the shaft
9 and the follower 40 connected to the link are cams 41
Is actuated by engaging the. The shaft of the cam 41 is rotated with the tape hanging member 10 at a predetermined timing.

Next, the operation will be described. FIG. 1 shows a state prior to the introduction of an object to be bound, which is a tape hanging member 1
A tape T is stretched between the tip of 0 and the tape pressing device 12. When the object to be bound A is fed onto the table 1 in this state, the introduction of the object to be bound is sensed by an appropriate sensor as shown in FIG. The tape is unrolled and moved in the direction of introduction of the object to be bound. The tape may be fed out together with the material to be bound, but by using the tape feeding member 13, the tape is fed out at a fixed position and at a fixed speed. There is an advantage to get.

Then, as shown in FIG. 8, when the object to be bound is set at a predetermined position, the pressing member 15 pivots upward to press the back surface of the object to be bound, and at this stage, as shown in FIG. The tape feed member 13 returns to the original position. Next, as shown in FIG. 10, the tape hanging member 10 descends, and immediately before reaching the lowermost position, the roller 16 is pulled up by the air cylinder 17 to remove the slack of the tape, and the tape hanging member 10 is removed. A pair of crimping portions 21 and 22 at the tip of the corresponding receiving portion 1
Abut with 9 and 20 and heat seal.

Therefore, the tape winding start portion and tape winding end portion are attached at two places, and the cutter 23 is received by the receiving portion 19.
And between 20 and 20 to cut the tape between the attachments. Needless to say, the winding start and winding end portions of the tape mean a portion immediately before being wound on the object to be bound and a portion immediately after winding. Even if the tape is cut, the tape fed from the reel 11 is connected to the tape pressed by the tape pressing device 12 via the _one adhering portion T ₁ . In addition, as shown in FIG.
There is a space between them, and it is possible to cut the tape by raising the cutter 23.

After the tape is cut, the tape hooking member 10 is raised and the cutter 23 is lowered to return to the initial position, and the operation of the cylinder 32 causes the roller 27 to move counterclockwise in FIG. Rotate moderately to pull the tape downward,
Move the adhesion part. Further, subsequently, the reel 33 is slightly rotated by the operation of the cylinder 36 to wind up the length of the tape pulled out downward.

In the above embodiment, the tape pressing device 12 is composed of a pair of rollers 27 and 28.
Needless to say, the pressing of the tape and the drawing of the tape after binding may be performed by another mechanism. Further, in some cases, instead of providing such a roller, the rollers may be pressed by members that abut each other and pulled out by the tape scrap winding reel 33.

[0020]

Therefore, according to the present invention, the tape fed from the reel is always kept connected to the tape portion held by the tape pressing device, which is the same as in the conventional case. Since the process of re-holding the tape terminal by the tape pressing member for each binding cycle is not included, there is no mistake in grabbing the tape terminal, and the situation in which the tape terminal cannot be bound does not occur. Therefore, it is possible to always bind with an appropriate tape, and the binding workability is remarkably improved.

[Brief description of drawings]

FIG. 1 is a side view of a tape binding device according to an example of the present invention.

2 is a front view of the binding device shown in FIG. 1. FIG.

FIG. 3 is a side view showing a main part of the binding device.

FIG. 4 is a perspective view of the main part.

FIG. 5 is a perspective view showing an example of a tape pressing device used in this binding device.

FIG. 6 is a perspective view showing an example of a device used in this binding device to press an object to be bound.

FIG. 7 is a side view showing a first operation stage of one binding cycle in this binding device.

FIG. 8 is a side view showing the second operating stage.

FIG. 9 is a side view showing the third operation stage.

FIG. 10 is a side view showing the final step.

FIG. 11 is a side view showing a binding device according to a conventional tape.

FIG. 12 is a side view showing a member for pressing a tape end in a conventional binding device.

[Explanation of symbols]

 1 table 10 tape hanging member 19 receiving part 20 receiving part 21 crimping part 22 crimping part 23 cutter 25 heater 26 heater 33 reel 34 wheel 35 contact member 36 actuating device 37 spring

Claims (2)

[Claims] 1. A table on which an object to be bound is placed, and a tape for winding a tape around the object to be bound on the table.
In a bundling device using a tape, which includes a pulling member and a heat seal portion that attaches a winding start portion and a winding end portion of the tape wound around the object to be bound to each other by a heat seal, The heat seal portion comprises a pair of receiving portions that are slightly apart from each other and a pair of crimping portions that are installed at the tip of the tape hooking member so as to abut against these receiving portions. Alternatively, the crimping portion is provided with a heat sealer, and the tape is cut by a cutter that advances and retreats between the receiving portions. apparatus. 2. A device is further provided for winding a tape extending through one of the adhering parts by a heat seal after cutting with the cutter, the winding device comprising a reel around which the tape is wound. A wheel fixed coaxially with the reel, a straight contact member for contacting the wheel to rotate the wheel by friction, and an operating device for reciprocating the contact member.
The tying device according to claim 1, further comprising a spring for pressing the contact member against the wheel.