JPH0811839A - Taper - Google Patents

Abstract

PURPOSE:To provide a taper in which the cutter blade can usually be covered and exposed only when it is to cut a tape, or is exposed deliberately. CONSTITUTION:There are provided a pair of rollers 6, 10 which are freely movable back and forth relative to a surface 1a to be taped of a case 1 being conveyed and stick a tape 2 on the case 1 from the front edge to the rear edge over the joint by moving back and forth according to the movement of the case. Between these rollers 6, 10 a cutter blade 27 is provided, which are freely movable back and forth relative to the surface to be taped 1a according to the movement of the case 1. A cutter cover 40 which covers the cutter blade 27 is provided, which follows the back-and-forth movement of the cutter blade 27 and specifically its actuation with a lag. As a result, the cutter blade 27 can usually be covered and is exposed only when it is made to actually cut a tape or exposed deliberately.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a taping device for automatically affixing a tape to a seam of a lid part piece of a corrugated cardboard case or the like, and particularly requires the affixed tape. The present invention relates to a taping device with an improved structure of a safety cover for a cutter blade that cuts into a length of.

[0002]

2. Description of the Related Art Conventionally, corrugated cardboard cases have been used for packing various articles, and the seams between the lid pieces on the bottom surface and the top surface of the corrugated cardboard cases are automatically attached to each other with a gum tape or the like using a taping device.

This taping device is disclosed in Japanese Patent Publication No. 5-714.
As disclosed in JP-A-52-52 and JP-A-4-239430, a pair of a front roller and a back roller are linked by a link mechanism to a transport path for transporting a corrugated cardboard case, and can be moved back and forth with respect to the bottom or top of the case. And is normally held at a position to advance above or below the tape sticking surface of the case, and the front roller holds the tip of the sticking tape.

The cardboard case has a bottom surface (or a top surface).
When the case is conveyed along the conveyance path, the front roller first contacts the lower front edge of the case (or the upper front edge) and is held by the front roller. The tape is attached to the front edge of the case, and the front roller presses the tape to the case as the case advances, and the bottom surface (or top surface)
Back up with the back roller to the level.

As the case advances, the back roller first presses and then the back roller presses and attaches the tape along the mating surface of the bottom surface (or the upper surface), and when the case passes the back roller, The back roller returns to its original position, and at almost the same time, the cutter blade provided between the front roller and the back roller operates to cut the tape, and the back roller then cuts the rear end of the cut tape to the case. Crimp it so that it presses against the trailing edge. The cut tape is again held by the front roller.

[0006]

By the way, the cutter blade is dangerous if it remains exposed, and a protective member is provided at the retracted position (inoperative position) to provide a safety measure to prevent the blade tip from accidentally touching an operator or the like. However, when an operator or the like operates the cutter blade to the advanced position (operating position) in order to replace or adjust the cutter blade, the cutter blade is exposed and is dangerous.

Therefore, an object of the present invention is to solve the above problems and provide a taping device capable of covering the cutter blade at all times and substantially exposing the cutter blade only when the tape is cut or intentionally exposed. To do.

[0008]

In order to achieve the above object, a taping device of the present invention is provided so as to be movable back and forth with respect to a tape bonding surface of a case to be conveyed, and is moved forward and backward in accordance with the movement of the case. Assuming a taping device equipped with a pair of rollers for adhering tape from the front edge of the case to the rear edge through the joint, it is possible to move back and forth with respect to the adhering surface according to the movement of the case between the rollers. A cutter blade is provided, and a cutter cover for covering the cutter blade is provided so as to follow the advance and retreat of the cutter blade and to follow the cutter blade with a delay when the cutter blade is actuated. Item 1).

In the taping device of the present invention, the cutter blade is attached to a rotatable cutter lever so as to move back and forth with respect to the mating surface, and a cutter cover is provided so as to rotate following the cutter lever. It is preferable that the cutter cover is rotated with a delay after the cutter lever is rotated and actuated by passage of the case (claim 2).

Further, in the taping apparatus of the present invention, a cutter lever and a cutter cover are rotatably provided on the same axis and a cutter cover is provided so as to be capable of expanding and contracting with respect to the cutter lever in a unit body for carrying a case. The cutter cover has a cover part that covers the cutter blade when it contracts and advances the cutter blade when it extends, and the unit body has a cam shaft that extends the cutter cover when the cutter cover is retracted by the case. Is preferred (claim 3).

Further, in the taping device of the present invention, the cutter lever has a cutter operating lever for rotating the cutter lever by hitting the case, and
It is preferable that the cutter operating lever is provided so that its length can be adjusted with respect to the cutter lever (claim 4).

[0012]

According to the taping device of the present invention having the above structure, the cutter cover always moves forward and backward following the cutter blade, so that safety is ensured, and the cutter cover follows the delay only when the cutter cover is activated. The tape can be cut with a cutter blade. In addition, a cutter cover is provided so that it can extend and contract with respect to the cutter lever that holds the cutter blade, and its cover part always covers the cutter blade, and when the cutter hits the case and retracts, it extends to extend the cutter from the cover part. Therefore, the safety can be further improved. Further, by adjusting the position of the cutter operating lever with respect to the cutter lever, the operation timing of the cutter lever can be freely adjusted.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

1 to 10, reference numeral 1 denotes a case made of cardboard or the like. In this embodiment, an example of a taping device for sticking a tape 2 to a sticking surface 1a of a lid piece on the bottom surface of the case 1 is shown. .

Although not shown in detail, the case 1 is sequentially conveyed so as to pass through the unit main body 3 by a conveying means such as a roller conveyer, and the tape 2 is fed between the case 1 and the front edge of the case 1 (FIG. 1). From the bottom, the mating surface of the bottom surface is passed (FIGS. 4 and 7) and the rear edge (FIG. 8) is attached.

First, the basic structure will be described with reference to FIG. 1. The unit body 3 includes an L-shaped front lever 4
Is rotatably provided on the support shaft 5, and at one end thereof,
A front roller 6 is rotatably attached, and a spring 7 is connected to the other end of the front roller 6. The force of the spring 7 constantly abuts a stopper (not shown) to hold the front roller 6 at the rotating position shown in FIG. An S-shaped back lever 8 is provided on the unit body 3 so as to face the front lever 4 and is rotatable around a support shaft 9, and a back roller 10 is rotatably attached to one end of the back lever 8. The other end of the back roller 10 and one end of the front roller 6 are connected by a link lever 11, and both levers 4 and 8 are interlocked by the link lever 11 to rotate. The link lever 11 has a length adjusting means 11a for adjusting the lever length in the middle thereof, and by adjusting the length of the link lever 11, the turning position of the back lever 8 can be adjusted. ing.

A tape supply device 12 is provided below the unit body 3. The tape supply device 12 is provided rotatably supported by a supply box 13 and a preliminary supply roll 14a, and vertically provided on the supply box 13 so as to invert the tape 2 from the supply roll 14 and move it up and down. It is composed of a reversing roller 15 for keeping the tension of the tape 2 supplied by the movement.

On both sides of the support shaft 5 of the front lever 4,
A pair of guide rollers 16, 16 for guiding the tape 2 from the tape supply device 12 are provided, and the guide roller 1
The tape 2 guided by 6, 16 is held by the tape pressing device 17 on the front roller 6 with the adhesive surface as the back.

This tape holding device 17 is shown in FIG.
This will be described with reference to (b) and FIGS.

As shown in FIG. 9B, the front lever 4 is provided with an arc-shaped guide plate 18 which is attached to the lever 4 and whose tip extends to the front roller 6. The arc-shaped guide plate 18 is formed such that the cross-sectional shape in the width direction is such that the adhesive surface of the guiding tape 2 is convex at the center in the width direction. In addition, as shown in FIG.
As shown in (b), the unit main body 3 is rotatably provided with a support bar 20 to which a pair of tape stand portions 19 are attached, and the tape stand portions 19 are rotated counterclockwise as viewed in the figure by a spring 21. The turning force is urged to the tape stand 19 and the stopper 22 restricts the counterclockwise turning so that the tape stand 19 is supported so as to stand upright.

The tape stand 19 has elastic forces in the rotating direction and in the axial direction of the support bar 20, and its both ends press both sides of the tape 2 guided by the guide plate 18 by its spring force. The tape 2 is held on the front roller 6.

On the other hand, in FIGS. 1 to 6, a support shaft 25 is attached to the unit main body 3 between the front roller 6 and the back roller 10, and a cutter lever 26 is rotatably provided on the support shaft 25.

As shown in FIGS. 2, 5 and 6, the cutter lever 26 has an L-shaped cutter arm portion 28 to which a cutter blade 27 is attached and an operating arm portion 29 to which a spring 30 is connected. Formed, both arm portions 28,
The joint portion 29 is supported by the support shaft 25. The cutter blade 27 is provided so as to be orthogonal to the cutter arm portion 28, and its blade tip 27 a is movable back and forth with respect to the bonding surface of the case 1 by the rotation of the cutter lever 26.

The cutter arm portion 28 is provided with a cutter operating lever 31 which is movable along the upper edge of the cutter arm portion 28. The upper surface of the cutter operating lever 31 contacts the mating surface of the case 1, and the cutter operating lever 31 is attached to the case. By the movement of 1, the contacting force is applied to rotate the cutter lever 26 downward. An elongated hole 32 is formed in the cutter operating lever 31, while the elongated hole 3 is formed in the cutter arm portion 28.
A cut timing adjusting screw 33 that engages with No. 2 and fixes the cutter operating lever 31 to the cutter arm portion 28 at an arbitrary position is provided.

The support shaft 25 is provided with a cutter cover 40 which rotates following the cutter lever 26. The cutter cover 40 is connected to the support shaft 25 via a long hole 41, and the long hole 41 allows the cutter cover 40 to be slightly movable in the longitudinal direction of the cutter arm portion 28 of the cutter lever 26. The cutter cover 40 has a box-shaped cover portion 42 that extends along the cutter arm portion 28 and is located on the cutter blade 27, and further has a cover operation that contacts the mating surface of the case 1 at the tip of the cover portion 42. The lever portion 43 is provided and the hook portion 44 is formed. In the hook portion 44, the cutter cover 40 is the case 1
When the unit body 3 is pressed down by the
It engages with the cam shaft 45 provided in the above, and moves the cutter cover 40 so as to extend slightly.

A rotating spring 46 for rotating following the cutter lever 26 is connected to the cutter cover 40, and the spring force of the spring 46 normally abuts against the cutter operating lever 31 of the cutter lever 26 to form an integral body. It is designed to rotate. A contraction spring 47 is connected to the cutter cover 40 at the elongated hole 41, and the spring 47 constantly applies a force to contract the cutter cover 40.

The cover portion 42 of the cutter cover 40 has an opening 48 formed in its upper surface, and when the cutter cover 40 contracts, the cutter blade 27 of the cutter lever 26 is covered with the cover portion 42 as shown in FIG. , When expanding,
As shown in FIG. 6, the cutter blade 26 can be advanced through the opening 48.

Next, the operation of the embodiment will be described.

As shown in FIG. 1, when the case 1 is conveyed to the unit main body 3, the front edge of the case 1 contacts the front roller 6, and the tape 2 held by the tape pressing device 17 on the front roller 6 is 10 (a), (b)
As shown in FIG. 3, the tape stand portion 19 is retracted to the position of the mating surface 1a on the bottom surface of the case 1, while the guide plate 19 presses the tape 2 by its spring force while adhering to the front edge of the case 1. Crim on the front edge.

Thereafter, when the case 1 is moved, the front roller 6 and the back roller 10 are retracted by the levers 4, 8 and the link lever 11 to the position of the mating surface 1a on the bottom surface of the case 1, and the tape stand portion 19 is Figure 10
The retracted state of (c) is restored to the upright state of FIG.

As shown in FIG. 4, the cutter lever 26 between the front roller 6 and the back roller 10 has the mating surface 1a.
To the cutter operating lever 3 of the lever 26 at the same time.
The cutter cover 40 is pushed from the position shown in FIG.
As shown in FIG.

As shown in FIG. 4, the case 1 has both rollers 6,10.
When the tape 2 is lifted up and moved, the tape 2 is sequentially supplied from the tape supply device 12 with the movement of the case 1, and is pressed against the mating surface 1a on the bottom surface by both rollers 6 and 10 by the force of the spring 7. It is crimped.

Next, when the case 1 is in the state shown in FIG. 5, the hook portion 44 of the cutter cover 40 is engaged with the cam shaft 45 of the unit body 3 and the cutter cover 40 is in the extended state. Then, the cutter blade 27 of the cutter lever 26 is in a state of being positioned in the opening 48 of the cover 42.

When the case 1 moves from the state shown in FIG. 5 to the position shown in FIG. 6, the rear edge of the case 1 moves to the cutter lever 2
After passing through the cutter operating lever 31 of No. 6, the cutter lever 26 is no longer pressed by the case 1, and the spring 3
With the force of 0, it rotates as shown in Figs.
Is the bonding surface 1 through the opening 48 of the cover 42.
The tape 2 is cut by the cutting edge 27a after advancing to the top of a. At this time, the cutter cover 40 is in a state in which the cover operating lever 43 is pressed by the case 1, so that only the cutter lever 26 operates, and when the case 1 passes through the cover operating lever 43, the cutter cover 40 is delayed. It will work.

When the cutter cover 40 operates and the case 1 further moves, as shown in FIG.
Is no longer pressed by the case 1 and advances toward the bonding surface 1a together with the front roller 6 by the force of the spring 7, and presses the cut tape 2 so as to bond it to the rear edge of the case 1 to bond the tape 2 thereto. Complete the attachment.

On the supply side of the cut tape 2,
The case 1 which is held by the front roller 6 by the tape pressing device 17 and is subsequently conveyed is repeatedly attached in the order described above.

In the above embodiments, the tape 2 is attached to the bottom of the case 1, but the tape may be attached to the top or the side of the case. Of course, various modifications may be made without departing from the scope of the invention.

[0038]

As described above, according to the taping device of the present invention, since it is constructed as described above, the cutter cover always advances and retreats following the cutter blade, so that safety is guaranteed. The excellent effect that the cutter blade can cut the tape because the cutter cover follows the delay only during the operation.

[Brief description of drawings]

FIG. 1 is a side view showing a taping device according to an embodiment of the present invention.

FIG. 2 is a side view showing details of a cutter lever and a cutter cover in the taping device of FIG.

FIG. 3 is a partial plan view of FIG.

FIG. 4 is a side view showing a state in which the case has moved in FIG.

5 is a side view showing a state in which the cutter lever and the cutter cover are retracted in the case in FIG. 2. FIG.

FIG. 6 is a side view showing a state in which the cutter lever is released by the case in FIG.

FIG. 7 is a side view showing a state in which the case has further moved in FIG.

FIG. 8 is a side view showing a state in which the case has further moved in FIG.

9A and 9B are a front view and a side view showing details of the tape pressing device of FIG.

FIG. 10 is a side view illustrating an operating state of the tape pressing device of FIG.

[Explanation of symbols]

 1 Case 1a Bonding surface 2 Tape 6 Front roller 10 Back roller 26 Cutter lever 27 Cutter blade 31 Cutter operating lever 40 Cutter cover 42 Cover part

Claims (4)

[Claims] 1. A pair of tapes which are provided so as to be able to move forward and backward with respect to a tape bonding surface of a case to be conveyed and which moves forward and backward in accordance with the movement of the case to stick a tape from a front edge of the case to a rear edge through a joint. In the taping device equipped with the rollers, a cutter blade that can move back and forth with respect to the bonding surface according to the movement of the case is provided between the rollers, and a cutter cover that covers the cutter blade is used to move the cutter blade back and forth. And a taping device which is provided so as to follow the operation of the cutter blade with a delay. 2. A cutter blade is attached to a rotatable cutter lever for advancing and retracting with respect to a mating surface, and a cutter cover is provided so as to rotate following the cutter lever, and the cutter lever is provided when the case passes. 2. The taping device according to claim 1, wherein the cutter cover rotates with a delay after the blade rotates and operates. 3. A unit main body for carrying a case is provided with a cutter lever and a cutter cover rotatably on the same axis, and a cutter cover is provided so as to be capable of expanding and contracting with respect to the cutter lever. Cover the cutter blade when contracting,
The taping device according to claim 2, further comprising a cover portion for advancing a cutter blade during extension, and a cam shaft for extending the cutter cover when the cutter cover is retracted by the case, in the unit main body. . 4. The cutter lever has a cutter operating lever for rotating the cutter lever by hitting a case, and the cutter operating lever is provided so that its length can be adjusted with respect to the cutter lever. Item 3. A taping device according to item 3.