JP2019089569A - Adhesive tape cutting device and manufacturing method of sealed product - Google Patents

Abstract

To manufacture a sealed product in which an adhesive tape is cut in the whole length of a container.SOLUTION: An adhesive tape cutting device 1 is provided which includes: a notch imparting part 3 for providing a notch at an edge part of an adhesive tape T attached at a side end edge P2 of a container P; and a tension imparting part for cutting the adhesive tape T by the notch by imparting tension to the adhesive tape T. Also, a manufacturing method of a sealed product is provided which includes steps of: providing a notch to the edge part of the adhesive tape T attached at the side end edge P2 of the container P; and cutting the adhesive tape by the notch by imparting tension to the adhesive tape T. With the adhesive tape cutting device and the manufacturing method of the sealed product, a sealed product can be manufactured in which the adhesive tape is cut in the whole length of the container.SELECTED DRAWING: Figure 1

Description

The present invention relates to an apparatus for cutting an adhesive tape that is continuously fed and a method for manufacturing a sealed product.

DESCRIPTION OF RELATED ART As a prior art example of the adhesive tape cutting device which concerns on this invention, there exists an adhesive tape cutting device which cut | disconnects the adhesive tape stuck on the side edge of the packaging container for eggs (for example, refer patent document 1 or 2). Further, in the packaging container for eggs, a transparent container made of synthetic resin (hereinafter referred to as "conventional container Q") as shown in FIGS.

As shown in FIGS. 6 and 7, in the conventional container Q, a lid and a main body are integrally formed via a hinge Q4. The conventional adhesive tape cutting device 101 is a front end detection sensor 105 as an optical sensor with respect to a conventional container Q and a subsequent conventional container Q ′ which are continuously conveyed from the upstream side of the container conveyance direction X by the belt conveyor 107. At the timing when the front end Q1 of the conventional container Q is detected, an electric motor (not shown) is driven to rotate the pinch roller 102.

When the electric motor is driven and the pinch roller 102 starts to rotate, the adhesive tape T pinched by the pinch roller 102 is pulled into the pinch roller 102, and the adhesive tape T is continuously fed out from the tape drum (not shown). Be The adhesive tape T is fed out from the tape drum in the adhesive tape feed direction Y, and is guided to the pinch roller 102 by the adhesive tape turning guide 104.

The pinch roller 102 clamps the side edge Q2 of the conventional container Q with the adhesive surface of the adhesive tape T while making the adhesive surface of the adhesive tape T valley-folded, and crimps the adhesive tape to the side edge Q2 of the conventional container Q T is stuck and sent out along the container transport direction X.

When the conventional container Q having the adhesive tape T attached to the side edge Q2 by the pinch roller 102 is delivered to the position shown in FIGS. 6 and 7, the rear end Q3 is detected by the rear end detection sensor 106 which is an optical sensor. Be done. At the timing when the rear end detection sensor 106 detects the rear end Q3, the electric motor that has rotated the pinch roller 102 stops driving.

When the electric motor stops driving, an arm (not shown) for advancing and retracting the cutter 103 starts driving in a direction for advancing the cutter 103. As shown in FIG. 7, the cutting of the adhesive tape T is completed by advancing the cutter 103 from the position represented by the two-dot chain line to the position represented by the solid line. Thereafter, the adhesive tape T is cut by the conventional adhesive tape cutting device 101 also with respect to the subsequent conventional container Q ′ to which the adhesive tape T is similarly attached.

The conventional containers Q and Q 'whose adhesive tape T is cut by the conventional adhesive tape cutting device 101 are conveyed to the downstream side of the container conveyance direction X by the belt conveyor 107 as a sealed product, and the collecting place provided on the downstream side It is packed in a rack with a caster, a cardboard box, etc. (not shown) and shipped.

In the sealed product, a knob portion U in which the adhesive surface of the adhesive tape T is crimped in a valley manner is formed. This knob U has a length of about 10 mm to 20 mm forward from the front end Q1 and 10 mm to 20 mm rearward from the rear end Q3 so that the consumer can easily pick the adhesive tape T from the conventional container Q with fingers. It has become about long. Thus, the length of the adhesive tape T used to seal the conventional container Q is a length obtained by adding about 20 mm to 40 mm to the entire length of the container Q (the length from the front end Q1 to the rear end Q3).

Unexamined-Japanese-Patent No. 06-293374 Unexamined-Japanese-Patent No. 2010-036957 Patent No. 5874795 gazette

In recent years, not only the conventional container Q but a new type of container has been used for egg packaging. For example, a container having a side edge for sticking the adhesive tape T formed shorter than the entire length of the container has newly appeared (see, for example, Patent Document 3).

In such a new type of container (hereinafter referred to as "container P"), as shown in FIGS. 1 and 2, the length of the side edge P2 to which the adhesive tape T is attached is the entire length of the container P (front end It is formed shorter than the length from P1 to the rear end P3. Thereby, it is possible to make adhesive tape T used for sealing of container P shorter than the full length of container P, and it can save the quantity of adhesive tape T required for sealing rather than conventional containers Q.

However, although what cut | disconnected the adhesive tape used for sealing of a container in the full length of a container is disclosed by patent document 3, it is disclosed about how to cut an adhesive tape within the full length of a container. Not. In the conventional adhesive tape cutting device 101 shown in FIGS. 6 and 7, when the adhesive tape is cut within the entire length of the container, the container P may be damaged.

The present invention solves the above-mentioned subject, and the object is to manufacture a sealed product which cut an adhesive tape within the full length of a container.

In order to solve the above-mentioned subject, the notch giving part which puts a notch in the edge of the adhesive tape stuck on the side edge of a container, Tension which gives tension to an adhesive tape and cuts adhesive tape from the notch An adhesive tape cutting device is provided, comprising: an applying unit.

Also, a method of manufacturing a sealed product, comprising the steps of: making a notch in the edge of the adhesive tape attached to the side edge of the container; and applying tension to the adhesive tape to cut the adhesive tape from the notch. I will provide a.

If it is a manufacturing method of an adhesive tape cutting device and a sealing product concerning the present invention, a sealing product which cut an adhesive tape within the full length of a container can be manufactured.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic perspective view which shows the structure of the adhesive tape cutting device which concerns on the 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic plan view which shows the structure of the adhesive tape cutting device which concerns on the 1st Embodiment of this invention. It is a schematic plan view which shows operation | movement of the adhesive tape cutting device which concerns on the 1st Embodiment of this invention. It is a figure which shows the operation | movement flow of the adhesive tape cutting device which concerns on the 1st Embodiment of this invention. It is a schematic plan view which shows the structure of the adhesive tape cutting device which concerns on the 2nd Embodiment of this invention. It is a schematic perspective view which shows the structure of the conventional adhesive tape cutting device. It is a schematic plan view which shows the structure of the conventional adhesive tape cutting device.

(container)
As an example of a container according to the present embodiment, a container P shown in FIGS. The container P is a packaging container for eggs which is entirely made of a transparent synthetic resin, and includes a main body for containing an egg to be packaged, and a lid integrally formed on the main body via a hinge P4; When sealing the container P, it is comprised by the side edge P2 currently formed in each of a main body and a lid | cover in order to stick the adhesive tape T. As shown in FIG. The side edge P2 of the container P is formed shorter than the total length of the container P (the length from the front end P1 to the rear end P3).

Although the container P uses eggs as the packaging target, the adhesive tape cutting device according to the present embodiment is a container having side edges, and corresponds to a container in which the side edges are formed shorter than the entire length of the container. Do. Therefore, the container is not limited to those for packaging eggs, and the shape of the side edge is not limited to that illustrated as long as the side edge is formed shorter than the entire length of the container.

(Sealing product)
The sealed product according to the embodiment of the present invention refers to a product in which an adhesive tape which has been continuously fed is attached to a container filled with articles, and then the adhesive tape is separated to complete sealing.

First Embodiment
Hereinafter, an adhesive tape cutting device 1 according to a first embodiment of the present invention will be described. As shown in FIGS. 1 and 2, the adhesive tape cutting device 1 according to the present embodiment is provided on a conveyor 7 that conveys a container P in a container conveyance direction X. The adhesive tape cutting device 1 adheres to the side edge P2 of the container P and the first detection unit 5 and the second detection unit 6, which are optical sensors for detecting the main body or lid of the container P being transported by the conveyor 7 The pinch roller 2 that presses the tape T and feeds the adhesive tape T along the container transport direction X and then decelerates or stops, and the adhesive tape T sent to the pinch roller 2 does not reach one end to the other in the width direction And a notch applying unit 3 for inserting a notch. In addition, the notch which concerns on this Embodiment points out the crack made locally at the edge of adhesive tape T. FIG.

First, the conveyor 7 will be described. As shown in FIG. 1, the conveyor 7 according to the present embodiment is a belt conveyor for continuously transporting the container P and the container P ′ in the container transport direction X, and the adhesive tape cutting device 1 performs sealing. While driving is driving without stopping. The conveyor 7 is provided with a guide for guiding the containers P, but in the drawings attached to the present application, the guide is omitted and the conveyor 7 is depicted. The conveyor 7 according to the present embodiment is a belt conveyor, but it need only have the function of conveying the containers P in the conveyance direction X, and therefore, not only the belt conveyor but also various kinds of conveyors can be used.

Next, the first detection unit 5 will be described. As shown in FIGS. 1 and 2, the first detection unit 5 according to the present embodiment is an optical proximity sensor, and the main body or lid of the container P transported from the upstream side of the container transport direction X by the conveyor 7 It is configured to detect The first detection unit 5 transmits an ON signal to the control unit (not shown) when the container P is in the detection range, and transmits an OFF signal to the control unit when the container P is out of the detection range. The control unit that receives the signal transmitted from the first detection unit 5 is configured to control the driving of the pinch roller 2 and the notch application unit 3 described later.

Next, the second detection unit 6 will be described. As shown in FIGS. 1 and 2, the second detection unit 6 according to the present embodiment is an optical proximity sensor like the first detection unit 5, and is conveyed by the conveyor 7 from the upstream side in the container conveyance direction X It is comprised so that the main body or lid of the container P which has been carried out may be detected. The second detection unit 6 transmits an ON signal to the control unit when the container P is in the detection range, and transmits an OFF signal to the control unit when the container P is out of the detection range. The control unit that has received the signal transmitted from the second detection unit 6 is configured to control the driving of the notch giving unit 3 described later.

Although the first detection unit 5 and the second detection unit 6 are both optical proximity sensors, they have a function of detecting the main body or lid of the container P conveyed from the upstream side of the container conveyance direction X by the conveyor 7 As long as it is included, not only an optical proximity sensor but various types of sensors can be used.

Next, the pinch roller 2 will be described. As shown in FIGS. 1 and 2, in the pinch roller 2 according to the present embodiment, the adhesion of the adhesive tape T is performed while making the adhesive surface of the adhesive tape T drawn continuously from the tape drum (not shown) valley-folded. The side edge P2 of the container P is sandwiched and crimped by the surface, and the adhesive tape T is attached to the side edge P2 of the container P and sent out along the container conveyance direction X. The control unit controls the driving of the electric motor that rotates the pinch roller 2 based on the signal transmitted from the first detection unit 5. In the drawings attached to the present application, the electric motor is omitted and only the pinch roller 2 is drawn.

Next, the notch application unit 3 will be described. As shown in FIGS. 1 and 2, the notch applying unit 3 according to the present embodiment has a circular blade cutter for inserting a notch in the adhesive tape T delivered to the pinch roller 2, and further, the notch applying unit 3 Has an arm for advancing and retracting the cutter, and an electric motor for driving the arm. The control unit controls the driving of the electric motor of the notch giving unit 3 based on the signal transmitted from the first detection unit 5. In the drawings attached to the present application, only the cutter is depicted by omitting the arm and the electric motor.

As shown in FIG. 2, the notch applying unit 3 according to the present embodiment is configured to insert a notch in the adhesive tape T by advancing the cutter from the position represented by the two-dot chain line to the position represented by the solid line. Is configured. At this time, the cutter blade advances only to a position where one end of the adhesive tape T in the width direction does not reach the other end, and the cutter blade does not contact the container P.

The adhesive tape T with a notch that does not reach from the one end to the other end in the width direction by the notch application unit 3 is caused by the inertia force of the container P that works in the direction of the container conveyance direction X when the pinch roller 2 decelerates or stops. The tension applied in the longitudinal direction of the adhesive tape T, the tension applied in the longitudinal direction of the adhesive tape T by the frictional force between the container P and the conveyor 7 or the container P ′ on the upstream side of the container transport direction X by the conveyor 7 By being conveyed, one of the tensions or two or more of the tensions applied in the longitudinal direction of the adhesive tape T by the force that the front end P ′ 1 contacts the rear end P 3 of the container P and pushes in the conveying direction X It is cut by breaking from the notch portion by a combination of tensions. That is, in the present embodiment, at least one of the pinch roller 2 or the conveyor 7 acts as a tension applying portion.

The notch applying unit 3 according to the present embodiment inserts a notch in the edge of the adhesive tape T using a circular blade cutter, but the notch applying unit 3 is from one end to the other end of the adhesive tape T in the width direction. As long as it has a function of making a notch to a position where it does not reach, it is possible to use not only a circular blade cutter but also various kinds of cutters. Further, the direction of advancing the cutter is not limited to the width direction of the adhesive tape T, and may be advanced to a vertically lower position from a position vertically above the adhesive tape T, for example. From the position, it may be advanced to the vertically upper position.

Next, the operation of the pressure-sensitive adhesive tape cutting device 1 when the pressure-sensitive adhesive tape cutting device 1 according to the present embodiment manufactures a sealed product will be described with reference to FIGS. On the upstream side of the container transport direction X, after the egg is packed in the main body of the container P by a device (not shown) for packing eggs in the container P, the lid of the container P is closed by rotating the hinge P4 as an axis. The container is transported in the container transport direction X.

The container P with the lid closed is passed through the position shown in FIG. 3A while the lid is kept closed by a guide (not shown) provided on the conveyor 7. When the container P is transported to the position shown in FIG. 3B, the control unit receives the ON signal from the first detection unit 5 as the main body or lid of the container P enters the detection range of the first detection unit 5. Receive (S1). The control unit having received the ON signal starts driving of the electric motor of the pinch roller 2 (S2).

When the electric motor of the pinch roller 2 starts driving, the pinch roller 2 rotates and draws in the adhesive tape T, so the adhesive tape T is continuously fed out from the tape drum (not shown). The adhesive tape T is fed out from the tape drum in the adhesive tape feeding direction Y, and is guided to the pinch roller 2 by the adhesive tape turning guide 4.

While making the adhesive surface of adhesive tape T valley-fold, pinch roller 2 sandwiches side edge P2 of container P by the adhesive surface of adhesive tape T and crimps it, and adheres adhesive tape T to side edge P2 of container P Delivery along the container transport direction X. At this time, when the main body or the lid of the container P enters the detection range of the second detection unit 6, the control unit receives an ON signal from the second detection unit 6 (S3).

When the container P with the adhesive tape T attached to the side edge P2 by the pinch roller 2 is delivered to the position shown in FIG. 3C, the main body or lid of the container P is out of the detection range of the first detection unit 5 Thus, the control unit receives the OFF signal from the first detection unit 5 (S4). The control unit having received the OFF signal decelerates or stops the drive of the electric motor of the pinch roller 2 (S5), and advances the cutter to the position shown in FIG. 3C by driving the electric motor of the notch giving unit 3 The adhesive tape T is inserted into a notch which does not reach from the one end to the other end in the width direction.

The adhesive tape T with a notch that does not reach from the one end to the other end in the width direction by the notch application unit 3 is caused by the inertia force of the container P that works in the direction of the container conveyance direction X when the pinch roller 2 decelerates or stops. The tension applied in the longitudinal direction of the adhesive tape T, the tension applied in the longitudinal direction of the adhesive tape T by the frictional force between the container P and the conveyor 7 or the container P ′ on the upstream side of the container transport direction X by the conveyor 7 By being conveyed, one of the tensions or two or more of the tensions applied in the longitudinal direction of the adhesive tape T by the force that the front end P ′ 1 contacts the rear end P 3 of the container P and pushes in the conveying direction X It is cut by breaking from the notch portion by the combination of tension (S7).

When the adhesive tape T is cut at the notch and the container P which is a sealed product is transported to the position shown in FIG. 3D, the main body or lid of the container P is out of the detection range of the second detection unit 6 Then, the control unit receives the OFF signal from the second detection unit 6 (S8). The control unit having received the OFF signal drives the electric motor of the notch application unit 3 to retract the cutter to the position shown in FIG. 3C (S9), thereby producing adhesion of one sealed product. The operation of the tape cutting device 1 is completed.

In the present embodiment, the cutter is not retracted to the position shown in FIG. 3C until the OFF signal transmitted from the second detection unit 6 is received. As a result, even when the adhesive tape T has slack and a notch can not be inserted when the cutter is advanced to the position shown in FIG. 3C, the pinch roller 2 decelerates or stops to move in the container conveyance direction X. The tension applied in the longitudinal direction of the adhesive tape T by the inertial force of the container P acting in the direction, or the tension applied in the longitudinal direction of the adhesive tape T by the frictional force between the container P and the conveyor 7 The front end P ′ 1 of the upstream side container P ′ is conveyed by the conveyor 7 and comes in contact with the rear end P 3 of the container P and pushed in the conveyance direction X by the tension applied in the longitudinal direction of the adhesive tape T When the slack is eliminated, the adhesive tape T is pressed against the cutter, whereby a notch can be formed in the edge of the adhesive tape T.

Also, instead of providing the second detection unit 6, for example, after the cutter has advanced to the position shown in FIG. 3C, a predetermined time without slack by the tension generated in the longitudinal direction of the adhesive tape T has elapsed. You may make it back. If the cutter of the notch application unit 3 is a cutter such as a laser cutter that can reliably insert a notch even if the adhesive tape T has a slack, the second detection unit 6 need not be provided, and the predetermined time is set. There is no need to wait until it has passed.

In the sealed product manufactured by the adhesive tape cutting device 1 according to the present embodiment, as shown in FIG. 3 (d), a knob portion U in which the adhesive surface of the adhesive tape T is crimped in a valley fold is formed. . The knob portion U has a length of about 10 mm to 20 mm forward from the side edge P2 and 10 mm rearward from the side edge P2 so that the consumer can easily pick it up with the finger when peeling off the adhesive tape T from the container P It is about 20 mm in length. The adhesive tape cutting device 1 according to the present embodiment has the position of the first detection unit 5 and the notch application unit 3 so that the length of the adhesive tape T used for sealing is about 20 mm shorter than the entire length of the container P. The position is determined, but not limited to this, even if the position of the first detection unit 5 or the position of the notch application unit 3 is changed so that the length of the adhesive tape T becomes substantially equal to the entire length of the container P Good.

When the sealing of the container P is completed, the subsequent sealing using the adhesive tape T is similarly performed on the subsequent container P ′ transported to the upstream side in the transport direction X. The containers P and P ′ which have been sealed and become sealed products are transported by the conveyor 7 to the downstream side of the container transport direction X, and are racks with casters at a gathering place (not shown) provided on the downstream side. And packed in cardboard boxes and shipped.

Second Embodiment
Hereinafter, an adhesive tape cutting device 21 according to a second embodiment of the present invention will be described. The adhesive tape cutting device 21 concerning this Embodiment is provided in the conveyor 7 which conveys the container P to the container conveyance direction X, as shown in FIG. The adhesive tape cutting device 21 adheres to the side edge P2 of the container P and the first detection unit 5 and the second detection unit 6, which are optical sensors for detecting the main body or lid of the container P being transported by the conveyor 7 The pinch roller 2 that presses the tape T and feeds the adhesive tape T along the container conveyance direction X and then decelerates or stops, and the adhesive tape T sent to the pinch roller 2 does not reach one end to the other end in the width direction It is provided with the notch giving part 3 which inserts a notch, and the force application member 28 which applies the force which sends out the container P downstream in the container conveyance direction X.

In the description of the pressure-sensitive adhesive tape cutting device 21 according to the present embodiment, the same reference numerals as in the description of the pressure-sensitive adhesive tape cutting device 1 according to the first embodiment denote the same or corresponding parts. Detailed explanation is omitted.

As shown in FIG. 5, the force application member 28 according to the present embodiment is configured of four rollers for delivering the container P to the downstream side in the container conveyance direction X. Each roller is provided with a drive mechanism (not shown) by an electric motor, sandwiching the container P from both sides of the hinge P4 and the side edge P2 with respect to the container P and delivering it downstream in the container transport direction X Apply force.

The adhesive tape cutting device 21 is provided with the force member 28 so that, for example, the weight of the articles packed in the container P is very light and the inertial force acting on the container P, the frictional force between the container P and the conveyor 7, The container P ′ on the upstream side in the container conveyance direction X is conveyed by the conveyor 7 so that the front end P ′ 1 comes in contact with the rear end P 3 of the container P and the pressing force in the conveyance direction X is weak A tension can be applied to break the adhesive tape T from the notch portion. That is, in the present embodiment, the force application member 28 acts as a tension applying portion.

Although the force application member 28 according to the present embodiment is configured by four rollers, it only needs to have a function of applying tension in the longitudinal direction of the adhesive tape T, so, for example, the number of rollers may be increased or decreased. It may be a mechanism other than a roller. Also, by providing a guide that applies a force in the direction of pressing the lid of the container P from above instead of the roller etc., the frictional force between the container P and the conveyor 7 is increased to extend the adhesive tape T in the longitudinal direction. It is good also as composition which gives tension.

Furthermore, in addition to applying a force to the container P, the adhesive tape T may be applied a force in the transport direction X directly. For example, another pinch roller is provided on the downstream side of the container conveyance direction X of the pinch roller 2 and the notch giving unit 3, and after the adhesive tape T is notched, the other pinch roller is driven at a higher speed than the pinch roller 2 By doing this, a force in the transport direction X can be applied to the adhesive tape T.

The embodiment disclosed this time is an example and is not limited thereto. The present invention is not the scope described above, is shown by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

The present invention is effectively utilized for the production of a sealed product using a continuously fed adhesive tape.

1, 21 adhesive tape cutting device 2 pinch roller 3 notch application unit 4 adhesive tape turning guide 5 first detection unit 6 second detection unit 7 conveyor 28 force member P container P1 front end P2 side edge P3 rear end P4 hinge T adhesive Tape U knob X Container transport direction Y Adhesive tape feeding direction

Claims (6)

A notch giving a notch at the edge of the adhesive tape attached to the side edge of the container;
An adhesive tape cutting device comprising: a tension applying portion that applies tension to the adhesive tape and cuts the adhesive tape from the notch. The adhesive tape cutting device according to claim 1, wherein the tension applying unit is a pinch roller that applies an adhesive tape to a side edge of the container and feeds the adhesive tape and the container in a predetermined direction and then decelerates or stops. The adhesive tape cutting device according to claim 1, wherein the tension applying unit is a conveyor that conveys the container in a predetermined direction. The adhesive tape cutting device according to claim 1, wherein the tension applying unit is a force applying member that applies a force in a predetermined direction to the container or the adhesive tape. Notching the edge of the adhesive tape affixed to the side edge of the container;
Applying a tension to the adhesive tape to cut the adhesive tape from the notches. A method of producing a sealed product by means of an adhesive tape which is continuously fed, comprising:
Transporting the container;
Affixing an adhesive tape to the side edge of the container;
Feeding the adhesive tape along the transport direction of the container;
Decelerating or stopping the delivery of the adhesive tape;
Notching the edge of the delivered adhesive tape;
Applying a tension to the adhesive tape to cut the adhesive tape from the notches.

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