JPH0720117Y2 - Tape supply auxiliary device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a tape feeding auxiliary device for stably feeding a gripping tape fed from a reel to a punching machine, for example, in a manufacturing line for a detergent pillar container.

(Prior Art) Recently, a thin and compact so-called pillared container has been widely used as a container for storing a powdery detergent.

Conventionally, when manufacturing this type of container, a blank prepared by cutting a laminate mainly composed of paper into a predetermined shape in advance to form the outer peripheral wall of the container is prepared, and the blank is used in an injection molding machine. After being inserted and fixed in a pair of molds, resin that will be the framework of the container is injected into the remaining portion of the cavity formed between the molds to mold these blanks and the resin framework integrally. It is normal. Then, a handle formed as a separate body is attached to the container thus formed so as to be convenient to carry. This handle is
Usually, after being formed into a tape shape with the same resin as the container body, it is supplied to a punching machine and punched into a predetermined shape, and
It is formed by cutting to a certain size.

By the way, as a device for supplying the above-mentioned handle tape to the punching machine, a device as shown in FIG. 3 has been conventionally used. That is, as shown in the drawing, the handle tape 1
A dancer roller 4 for tape tension adjustment and a motor-driven tape sizing feed roller 5 are arranged from the upstream side between the tape supply reel 2 on which the tape is wound and the punching machine 3. Then, the tape constant size feed roller 5
A nip roller 6 is arranged opposite to each other, and guide rollers 7, 7 are arranged in front of and behind the dancer roller 4.

In such a structure, the handle tape 1 fed from the tape supply reel 2 is fed to the tape constant-size feed roller 5
The tape is sandwiched between the tape sizing feed roller 5 and the nip roller 6 by a driving force to be supplied to the punching machine 3 at a constant pitch, and is formed into a predetermined shape in the punching machine 3 and cut to a predetermined size. At that time, the tension of the gripping tape 1 at the position of the tape constant feed roller 5 is adjusted by the dancer roller 4 moving up and down as shown by the arrow in the figure.

(Problems to be Solved by the Invention) In the conventional apparatus, since the tension of the grip tape 1 supplied to the tape constant size feed roller 5 is adjusted only by the dancer roller 4 as described above, the tape supply is performed. Tape sizing roller 5 due to tension fluctuations in the section
Tape 1 slips and torque shortage occurs at the position
Therefore, there is a problem that the cut length of the tape 1 in the punching machine 3 tends to be unstable. In particular, when the tape supply reel 2 and the punching machine 3 are installed far apart from each other, the influence of the above-mentioned tension fluctuation becomes large.

The present invention has been made in view of the above problems, and an object of the present invention is to obtain a tape supply auxiliary device capable of supplying a stable tape while preventing the influence of tension fluctuations in the tape supply portion.

(Means for Solving the Problems) In order to solve the above problems, a tape supply auxiliary device according to the present invention provides a tape supply reel around which a supply tape is wound and a tension applied to the tape supplied from the tape supply reel. A tape supply auxiliary device that is arranged between the dancer roller and the constant-size feed roller in a tape supply device that comprises a dancer roller to be adjusted and a tape constant-size feed roller that sends out the fed tape in predetermined pitches, A tape feed assisting means including a tape feed assisting roller for feeding a tape from the tape feed reel driven by a motor and a nip roller arranged to face the tape feed assisting roller, and a tape feed assisting means downstream of the tape feed assisting means. And a tip of this dancer arm A swinging roller that is rotatably attached to the end and is capable of swinging in the tape tension direction and the relaxation direction while tracing the tape fed out by the tape feeding assisting means, and a spring that biases the dancer arm in the tape tension direction. A tape feed auxiliary roller starting limit switch for detecting a state in which the dancer arm swings to a position where the tape tension reaches a predetermined value against the spring force. And a tape tension holding means for holding the tape at a low tension.

(Operation) In the tape feeding auxiliary device of the present invention, the tape feeding auxiliary roller of the tape feeding auxiliary means is driven by a motor, and the tape feeding auxiliary roller and the nip roller cooperate to feed the tape from the tape feeding reel. At that time, the tension of the fed tape is adjusted by the dancer roller. Then, the fed-out tape is fed out at a predetermined pitch by the tape-sizing feed roller. At this time, the tape tension holding means cooperates with the tape feeding assisting means to keep the tape tension low. That is, the tape fed out by the tape feed assisting means is struck by the dancer arm urged by the spring of the tape tension holding means, and when the tape sizing feed roller is driven, the dancer arm resists the urging force of the spring. It is sent while swinging the arm. Then, when the dancer arm swings in the direction against the biasing force of the spring and reaches the position where the tape tension reaches a predetermined value,
The limit switch detects this, the tape feed auxiliary roller is activated, the tape is fed from the tape supply reel, the dancer arm swings in the tape loosening direction, and the tape tension is maintained at a low tension below a predetermined value. Thereby,
The fluctuation of the tape tension at the position of the tape constant feed roller can be suppressed to a low level without being affected by the fluctuation of the tension at the tape supply unit, and the tape can be stably supplied. Further, by providing such a tape supply auxiliary device, the tape supply reel can be arranged separately from the tape constant-size feed roller, and therefore, layout constraint conditions are reduced.

(Example) Hereinafter, an example will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram of a handle tape supply device according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of a tape supply auxiliary unit in the device.

This embodiment is applied to a handle tape supply device in a manufacturing line for a detergent pillar, in which a dancer is provided between a tape supply reel 12 around which a handle tape 11 is wound and a punching machine 13. Roller 14, tape sizing roller 15, nip roller 16 and guide rollers 17, 17
There is no difference in the basic configuration and operation from the conventional example shown in FIG. 3 between the guide roller 17 on the downstream side of the dancer roller 14 and the roller pair consisting of the tape constant size feed roller 15 and the nip roller 16. Is provided with a tape supply auxiliary unit 18.

As shown in the enlarged view of FIG. 2, the tape supply assisting unit 18 is provided with guide rollers 19 and 20 respectively arranged on the inlet side and the outlet side for guiding the gripping tape 11, and the guide rollers 19 and 20. A tape feed auxiliary roller 21 disposed between and driven by a motor, and a handle tape 11
And a nip roller 22 for pressing the tape feeding auxiliary roller 21. Further, a swinging roller 24 rotatably attached to the lower end of the dancer arm 23 is disposed at a position downstream of the tape feeding auxiliary roller 21.

The dancer arm 23 is swingably supported near the upper end thereof by a fixed shaft 25. Also, dancer arm 23
A spring for urging the swing roller 24 in the tape tension direction is provided between the upper end and the main body of the tape supply auxiliary unit 18.
26 are provided.

Further, at the swing position of the dancer arm 23 on the nip roller 22 side, the gripping tape 11 between the tape sizing feed roller 15 and the tape feed auxiliary roller 21 is brought into contact with the side surface of the dancer arm 23 by contact. A limit switch 27 that detects an increase in tension is provided. When this limit switch 27 is turned on, the tape feed auxiliary roller
Control signals are sent to the 21 drive motors (not shown),
The motor is activated.

In the above structure, the grip tape 11 is intermittently fed by the tape feed auxiliary roller 21, and is sandwiched between the tape sizing feed roller 15 and the nip roller 16 by the driving force of the tape sizing feed roller 15. Are supplied to the punching machine 13 at a constant pitch, and the punching machine 13 forms a predetermined shape and cuts to a predetermined size. At that time, the handle tape 11 fed by the tape feed auxiliary roller 21
Is struck by the swinging motion of the dancer arm 23 by the spring 26, and when the tape sizing feed roller 15 is driven, it is sent to the punching machine 13 side against the urging force of the spring 26. Then, when the dancer arm 23 moves and the limit switch 27 operates, the tape feed auxiliary roller 21 is activated and the handle tape 11 is fed.

When the tape sizing feed roller 15 feeds the gripping tape 11 forward as described above, when the tape tension between the tape sizing feed roller 15 and the tape feeding auxiliary roller 21 is increased, the dancer When the arm 23 swings toward the nip roller 22 side, the limit switch 27 is turned on and the tape feed auxiliary roller 21 is activated, which loosens the tape between the tape constant size feed roller 15 and the tape feed auxiliary roller 21. Keeps low tension.

In this way, the tape tension of the gripping tape 11 supplied to the tape sizing feed roller 15 is low because the dancer arm 23 and the tape feeding auxiliary roller 21 cooperate with each other for each pitch feed of the tape sizing feed roller 15. Therefore, it is possible to constantly and stably supply the tape to the punching machine 13. Therefore, the grip length of the gripping tape 1 at the position of the tape constant feed roller 5 and the torque shortage do not occur, and the cut length of the tape 1 in the punching machine 3 is stable.

Further, by providing such a tape supply auxiliary unit 18, the tape supply reel 12 can be fed to the tape constant-size feed roller 15
It is possible to reduce the number of constraints on the layout of the entire device.

(Effects of the Invention) Since the present invention is configured as described above, it is possible to prevent the influence of tension fluctuations in the tape supply section, to perform stable tape supply, and to eliminate dimensional variations in the punching section. It is also possible to dispose the tape supply reel away from the tape constant-size feed roller.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a handle tape supply device according to an embodiment of the present invention, FIG. 2 is a configuration diagram of a tape supply auxiliary unit in the device, and FIG. 3 is a schematic view of a conventional handle tape supply device. It is a block diagram. 11: Handle tape, 12: Tape supply reel, 15: Tape constant size feeding roller, 18: Tape feeding auxiliary unit (tape feeding auxiliary device), 21: Tape feeding auxiliary roller, 22: Nip roller, 23: Dancer arm, 24: rocking roller, 2
6: Spring, 27: Limit switch.

Claims (1)

[Scope of utility model registration request] 1. A tape supply reel around which a tape to be supplied is wound, a dancer roller for adjusting the tension of the tape fed from the tape supply reel, and a tape constant-size feed roller for feeding the fed tape by a predetermined pitch. A tape feeding auxiliary device arranged between the dancer roller and the tape constant size feeding roller in the tape feeding device, wherein the tape feeding auxiliary roller is driven by a motor to feed the tape from the tape feeding reel and the tape feeding auxiliary roller. Tape feed assisting means consisting of a nip roller arranged opposite to each other, a dancer arm which is located downstream of the tape feed assisting means in a tape feeding direction and is swingable about a fulcrum, and pivoted at the tip of the dancer arm. A tape freely attached and fed out by the tape feeding assisting means. Swing roller that can be swung in the tape tension direction and the relaxation direction while traversing the tape, a spring that urges the dancer arm in the tape tension direction, and the dancer arm resists the spring force and the tape tension reaches a predetermined value. A tape tension holding means for holding the tape tension at a low tension in cooperation with the tape feeding auxiliary means, which comprises a limit switch for starting the tape feeding auxiliary roller for detecting the state of swinging to the position. Tape feeding auxiliary device.