JP6981704B1 - Box sealing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately apply tape not only to the facing ends of a pair of flaps formed on a surface having an opening but also to a surface on a side adjacent to the surface having the opening even in a thin box body. To attach. SOLUTION: When a box body B is transported from the rear to the front of a transport path 4, a tape T is applied to an opposed end portion Baa of a pair of flaps Ba having on an upper surface Bu of the box body B along a transport direction Lf. The tape affixing unit 10 is provided with a tape affixing unit 10, and the tape affixing unit 10 is configured to be movable between a descent position Pd and an ascending position Pu above the descent position Pd. A pressing portion 16 for pressing the tape T against the front surface Bf of B and pressing the tape T against the facing end portion Baa of the box body B at the ascending position Pu is provided, and the rear pressing roller 16 is provided with a pressing portion 16 from the ascending position Pu to the descending position Pd. A pulling means 65 for pulling up the tape lower portion Td located near the rear side Ar of the pressing portion 16 when descending to is provided. [Selection diagram] FIG. 10

Description

The present invention comprises a transport unit that transports a box from the rear to the front of a transport path, and a pair of openings that project from both outer sides in the width direction of the opening on the upper surface of the box toward the center so that the opening can be closed. The present invention relates to a box sealing device provided with a tape sticking unit for sticking tape along a transport direction at the facing end of the flap.

Conventionally, regarding the sealing device, not only the total length in the front-rear direction of the facing end portions of the pair of flaps on the upper surface of the box body in order to improve the sealing performance, but also the front and rear ends of the facing end portions are exceeded. A configuration has been developed in which the tape can be attached up to the upper part of the surface (see, for example, Patent Document 1 below).

The sealing device of Patent Document 1 is arranged apart from each other in the transport direction, and can cut the tape with the upstream pressing roller and the downstream pressing roller as the pressing portion capable of pressing the box body via the tape. The configuration is provided with a tape cutter arranged between the pressing rollers on the upstream side and the pressing roller on the downstream side.

When the tape is attached to the box using the sealing device of Patent Document 1, the lower portion of the tape is placed on the upstream side (rear side) of the upstream pressing roller in a state of hanging down. In this state, when the box body advances from the upstream side (rear) to the upstream side pressing portion (front) in the transport path, the upper front surface of the box body is pressed by the upstream pressing portion via the lower portion of the tape.

This makes it possible to attach the tape to the upper part of the front surface of the box body. The lower part of the tape attached to the upper part of the front surface of the box body becomes the starting end of the tape application to the box body, and then the pair of the upper surface of the box body is held by the upstream pressing roller and the downstream pressing roller. The tape sticking operation to the facing end portion of the flap is continuously performed from the front end to the rear end of the facing end portion.

After that, the tape is cut by a tape cutter in order to attach it to the upper part of the rear surface of the box body, leaving an extra length portion extending rearward from the rear end of the box body. On the other hand, the tape remaining on the device side after cutting is arranged in the vicinity of the rear side of the upstream pressing roller with the lower end hanging down, and the tape is attached to the next box to be conveyed in the same manner as described above. Can be prepared.

By the way, when a delivery item (thin type delivery item) such as a book having a thickness of, for example, about 8 mm to 40 mm, is sealed in a packing material and delivered, an envelope or a plastic bag is currently used as the packing material. many.
However, since envelopes and vinyl packaging are generally more flexible and inferior in strength than cardboard boxes, deliveries enclosed in these envelopes and vinyl packaging are difficult to load and easily collapse. , There was a risk that the protection performance of the delivered item would be inferior due to factors such as tearing during delivery and easy wrinkling.

On the other hand, thin deliveries are also sealed and delivered in boxes such as cardboard boxes, which are stronger than envelopes and vinyl packaging, but they are excessive for the thickness of thin deliveries (contents). When thin deliverables are sealed and delivered in a thick box, the actual loading capacity on the loading platform during transportation by truck decreases, which reduces transportation efficiency. It is disadvantageous.

Against this background, there is a need to make boxes such as cardboard boxes, which are stronger than envelopes and vinyl packaging, thinner, and to seal and deliver deliveries in the thin boxes.
However, in the case of a thin box body, as described above, when the tape is started to be attached to the thin box body by using the sealing device, that is, when the tape is attached to the front surface of the box body by the pressing portion. In addition, the front surface of the box is shortened in the vertical direction due to the thinness of the box.

Then, the lower end of the tape attached to the front surface of the box may be left below the lower end of the box. On the other hand, there is a risk that the box will adhere to the box, the appearance of the box after the tape is attached will deteriorate, and the tape will come off.
That is, such a problem has been a major factor in the fact that the delivery is not widely used by sealing the delivery in a thin box.

Japanese Unexamined Patent Publication No. 2011-68408

In the present invention, even in a thin box body, the tape is appropriately attached not only to the facing end portion of the flap formed on the surface having the opening but also to the surface on the side adjacent to the surface having the opening. The purpose is to provide a box-body sealing device that can be used.

The box sealing device of the present invention can close the box transport unit that transports the box from the rear to the front of the transport path and the opening from both outer sides in the width direction of the opening on the upper surface of the box. It is a box-body sealing device provided with a tape affixing unit for affixing tape along the transport direction at the opposite ends of a pair of flaps protruding toward the center. It is configured to be movable between the ascending position above the descent position, and the tape is pressed against the front surface of the box body at the descent position, and the facing end portion of the box body is pressed at the ascending position. Is provided with a pressing portion for pressing the tape, and a pulling means for pulling up the lower portion of the tape located near the rear side of the pressing portion when the pressing portion descends from the ascending position to the descending position is provided . The pulling means moves in the direction of pulling up the tape so that the distance between the pulling means and the pressing portion becomes long, based on the movement when the pressing portion returns from the rising position to the descending position. wherein the structure and the.

According to the above arrangement, when the pressing portion is returned to the lowered position from the elevated position, since the pulling means itself moves in a direction to raise the tape, if the pulling means pulls the tape lower left position Compared to this, the lower part of the tape can be pulled up positively.
Therefore, the lower portion of the tape can be arranged so as not to hang excessively with respect to the pressing portion located at the descending position.

Therefore, even if the box body is thin, the tape can be appropriately attached not only to the facing ends of the pair of flaps formed on the surface having the opening of the box body but also to the front surface of the box body. ..

In addition, in this specification, a thin box body is a height direction of a surface (front surface and rear surface) adjacent to a surface having an opening, rather than each length in the width direction and the longitudinal direction of the surface having the opening. A box body having a short length is shown, and for example, a box body having a thickness of, for example, about 8 mm to 40 mm, which is suitable for sealing and delivering a delivery product (thin delivery product) such as a book is shown.

As an aspect of the present invention, the tape is arranged along a tape lower lineout path extending downward from above the pulling means toward the pressing portion, and the pressing portion is placed at the lowering position and the ascending portion. A swing arm that swings to and from a position, and a connecting arm that is connected to the swing arm at one end and extends from one end to the other end so as to cross the tape lower wiring path, and is pulled up. The means is provided on the connecting arm, and the connecting arm arranges the pulling means downward on the tape in conjunction with the displacement of the swing arm when the pressing portion descends from the rising position to the descending position. It is preferable that the configuration is such that the cable path is moved from the one end side to the other end side.

When the pressing portion is returned to the lowered position from the raised position, moves in conjunction with the connecting arm GaYura movement arm. Then, by providing the pulling means on such a connecting arm, the pulling means itself can be moved in the direction of pulling up the lower part of the tape when the pressing portion returns from the rising position to the descending position. ..

That is, when the pressing portion moves from the ascending position to the descending position, the pulling means can positively pull up the lower part of the tape as compared with the case of pulling up the lower part of the tape while keeping the fixed position.

Further, by providing the pulling means on the connecting arm, a drive source or the like for moving the pulling means in the pulling direction when the pressing portion descends from the rising position to the descending position is separately provided. At least, the pulling means can be efficiently moved in the pulling direction as described above by utilizing the movement of the connecting member when the pressing portion is lowered.

As an aspect of the present invention, the pulling means has a configuration in which when the pressing portion descends from the ascending position to the descending position, the pressing portion travels substantially straight from one end side to the other end side with respect to the tape lower route. Is preferable.

As an aspect of the present invention, a tape cutting means for moving between the descending position and the ascending position and cutting the tape when moving from the ascending position to the descending position is provided in the vicinity of the front side of the pressing portion. It is preferable that the tape cutting means is arranged close to the pressing portion.
According to the above configuration, the length of the lower portion of the tape arranged near the rear side of the pressing portion located at the descending position can be shortened as much as possible below the pressing portion .

According to the present invention, even in a thin box body, the tape is appropriately applied not only to the facing end portion of the flap formed on the surface having the opening but also to the surface on the side adjacent to the surface having the opening. Can be pasted.

The external view of the sealing device of the box body of this embodiment. The right side view of the sealing device of the box body of this embodiment. The plan view of the sealing device of the box body of this embodiment. An enlarged rear view of the box sealing device of the present embodiment. FIG. 3 is a cross-sectional view taken along the line BB of FIG. FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG. External view showing a part of the tape sticking unit with virtual lines. An external view of the tape application unit as seen from the front, left, and bottom, with some virtual lines shown. An external view of the tape sticking unit as seen from the rear, left and top, with some virtual lines shown. Right side view showing a part of the tape sticking unit with a virtual line when the pressing part is located at the descending position. Right side view showing a part of the tape sticking unit with a virtual line when the pressing part is located in the raised position. (A) is an enlarged view of a main part of FIG. 10 in which the cutter arm is shown by a virtual line in FIG. 10, and (b) is an enlarged view of a main part of FIG. 11 in which the cutter arm is shown by a virtual line in FIG. (A) is an operation explanatory diagram showing the state when the tape is attached to the front surface of the box body, and (b) is an action explanatory diagram showing the state after the tape is also attached. (A) is an operation explanatory diagram showing the state when the tape is attached to the upper surface of the box body, and (b) is an action explanatory view showing the state after the tape is also attached. An operation explanatory view showing the state when the tape is attached to the rear surface of the box body. An operation explanatory view showing how the tape is pulled up by the pulling roller. External view of a thin box to be sealed.

An embodiment of the present invention will be described below with reference to the drawings.
The box body sealing device 1 (hereinafter abbreviated as “sealing device 1”) in the present embodiment is provided to close the opening provided in the upper surface Bu of the box body B (cardboard box B in this example). A device that seals the box body B by attaching an adhesive tape T (hereinafter abbreviated as "tape T") to the facing end portions Baa (see FIG. 17) of the pair of flaps Ba, and is the thinnest among the box bodies B. It is a device suitable for sealing the box body B of the above.

As shown in FIGS. 1 to 5, the sealing device 1 in the present embodiment is composed of a base 2, a unit support 3, and various units 10, 40, 50.
In the figure, L is the front-rear direction of the device, W is the width direction of the device, and Z is the vertical direction (height direction) of the device. Further, Lf is the front direction (front side) of the device, Lr is the rear direction (rear side) of the device, Wr is the right direction of the device, Wl is the left direction of the device, and Zu is the upward direction of the device.

As shown in FIGS. 1 to 3 and 5, the base 2 is extended rearward with respect to the box transport base 21 for automatically transporting the box body B along the transport path 4 and the box transport base 21. It is provided with a box supply stand 22 and a box carry-out stand 23 extending forward with respect to the box transport stand 21.

The upper surfaces of the box transport table 21, the box supply table 22, and the box carry-out table 23 are formed substantially flush with each other, and the above-mentioned transport path 4 includes not only the upper surface of the box transfer table 21 but also the box supply table 22 and the box. It is formed continuously and linearly in the front-rear direction up to the upper surface of each of the carry-out table 23. In the transport path 4, the rear side (rear side) of the apparatus corresponds to the upstream side in the transport direction of the box body B, and the front side (front side) corresponds to the downstream side, and the box body B corresponds to the rear side to the front side of the transport path 4. Transported in the direction.

The upper surface of the box supply table 22 is formed of a flat horizontal surface, whereas the upper surface of the box unloading table 23 has a plurality of transfer rollers 5 that can roll around an axis extending in the width direction. They are arranged in parallel at equal pitches along the lines (see FIGS. 1, 3, and 5).

As shown in FIGS. 1 to 5, the unit support 3 has a unit support frame 24 erected in the width direction above the upper surface of the box transport table 21 so as to straddle the transport path 4, and a unit support frame 24. Is provided with struts 125 that support from both sides in the width direction.

The unit support 3 is formed in a rectangular frame shape in a plan view that supports the tape sticking unit 10 and the upper box transport unit 40U, which will be described later. The tape sticking unit 10, which will be described later, is supported by the unit support 3 so that substantially the entire portion thereof is located immediately above the intermediate position in the width direction of the transport path 4. Further, the upper box transport unit 40U, which will be described later, is provided with a pair on both sides with respect to the tape sticking unit 10.

The column 125 extends in the vertical direction, and an intermediate portion thereof is attached to a side surface of the box carrier 21 corresponding to each in the width direction. Inside the support column 125, a spiral shaft (ball screw) extending in the vertical direction is arranged inside (not shown), and the unit support frame 24 is configured to be movable up and down. The sealing device 1 is provided with a height adjusting handle (not shown) for adjusting the height of the unit support 3 by rotating the spiral shaft.

As shown in FIGS. 1 to 5, the sealing device 1 in the present embodiment includes a tape sticking unit 10, a box transport unit 40, and a transport path width adjusting unit 50.
The box transport unit 40 includes an upper box transport unit 40U, a lower box transport unit 40D (see FIG. 5), and a box guide rail 48.

As shown in FIG. 5, the upper box transport unit 40U is supported by the unit support frame 24, and the lower box transport unit 40D is arranged on the upper part of the box transport base 21. As shown in FIG. 6, the upper box transport unit 40U and the lower box transport unit 40D both include a pair of left and right belt transport machines 43 along the transport path 4.

As shown in FIG. 5, the belt conveyor 43 is separated in the front-rear direction from a driven roller 44 that rolls around an axis extending in the width direction and a drive roller 45 that is rotated around an axis extending in the width direction by a motor 46. It is configured to have a transport belt 47 stretched in an annular shape (endless shape) over the driven roller 44 and the drive roller 45 arranged in an annular shape.

As shown in FIGS. 5 and 6, the belt conveyor 43 provided in the upper box transport unit 40U and the belt conveyor 43 provided in the lower box transport unit 40D described above are both sides of the transport path 4 in the width direction. In the above and below, the transport path 4 is interposed so as to face each of the upper and lower sides.

Then, as shown in FIG. 5, in the lower box transport unit 40D, the box body B is supported on the upper surface 47du of the transport belt 47 in the belt transport machine 43. On the other hand, the upper box transport unit 40U is adjusted to a height at which the lower surface 47 ud of the transport belt 47 in the belt conveyor 43 provided in the upper box transport unit 40U can abut on the upper surface Bu of the box body B. As a result, the upper and lower transport belts 47 are driven synchronously with respect to the transport path 4, so that the box body B can be automatically transported from the rear to the front of the transport path 4.
A motor 46 for driving the transport belt 47 is provided on the front side of the unit support frame 24 with an operation switch 49 for the operator to operate ON (operation) / OFF (stop).

As shown in FIGS. 1, 3, and 6, the box guide rails 48 in the box transport unit 40 are provided with a pair on both sides of the transport path 4 in the width direction, and the inner ends in the width direction of each of the transport paths 4 are connected to the transport path 4. Guided in the width direction by contacting the side surface of the box body B advancing along the width direction from the outside in the width direction.

As shown in FIGS. 1 and 3, each of the pair of box guide rails 48 is a long member extending linearly in the front-rear direction along the transport path 4, and is in the vertical direction (plate thickness direction). It is a plate material formed in the shape of a long blade in the width direction.

That is, the pair of box guide rails 48 has the minimum thickness among the thin box bodies B that can be handled by the sealing device 1 of the present embodiment (that is, can be sealed by attaching the tape T). It is formed to be thinner than the thickness. The pair of box guide rails 48 are horizontally arranged along the transport path 4 at the lower end of the transport path 4, that is, at a position slightly above the upper surface 47 du of the transport belt 47 constituting the lower surface of the transport path 4. (See FIGS. 4, 6, and 13 (a)).

As shown in FIGS. 1 to 6, the transport path width adjusting unit 50 includes a guide rail mounting portion 51, a width adjusting link 52, and a width adjusting lever 53, and these 51, 52, and 53 are each in the width direction. It is equipped with a pair of left and right rails corresponding to the box guide rails 48 provided in the above.

As shown in FIG. 4, the guide rail mounting portion 51 extends in the front-rear direction in parallel with the box guide rail 48, and is arranged in parallel on the outside in the width direction with respect to the box guide rail 48. As shown, the box guide rail 48 is attached and supported from the outside in the width direction.

As shown in FIGS. 1 to 4 and 6, the guide rail mounting portions 51 are supported by the box transport base 21 via the width adjusting link 52 on both sides in the width direction with respect to the transport path 4.

As shown in FIG. 3, one end of the width adjusting link 52 is pivotally supported by the widthwise end of the upper surface of the box carrier 21, and the other end is pivotally supported by the guide rail mounting portion 51, and the width is adjusted in a plan view. A posture in which one end of the link 52 is centered and the other end faces backward (see the width adjustment link 52 shown by the virtual line in FIG. 3) or a posture facing inward in the width direction (see the width adjustment link 52 shown by the solid line in FIG. 3). ) And swingable. Such a width adjusting link 52 is configured by a parallel link mechanism having a pair of front and rear links. As a result, the guide rail mounting portion 51 (box guide rail 48) is parallel and horizontal to the transport path 4, moves outward in the width direction, pushes toward the rear side with respect to the box supply base 22, and is in the width direction. While moving inward, it retracts to the side of the box carrier 21.

Then, by operating the width adjusting lever 53 provided at the rear portion of the guide rail mounting portion 51, the pivot of the shaft support portion on the other end side of the width adjusting link 52 with respect to the guide rail mounting portion 51 is restricted, so that the transport path 4 is used. The position of the box guide rail 48 can be fixed so as to have an arbitrary width.
That is, the pair of box guide rails 48 can manually adjust the width of the transport path 4 independently on each of the left and right sides by the transport path width adjusting unit 50.

As shown in FIGS. 7 to 11, the tape sticking unit 10 includes a rear swing arm 12, a front swing arm 13, a connecting arm 14, and a tape cutting arm 15.
The rear swing arm 12 has a rear pressing roller 16 described later at the lower end and the front end, and the rear pressing roller 16 is moved forward and above the descent position Pd (see FIG. 10) and the descent position Pd. It is pivotally supported at the rear of the right side wall 11r by a shaft 17 swingably extending in the width direction from the position Pu (see FIG. 11).

The front swing arm 13 has a front pressing roller 18 described later at the lower end and the rear end, and the front pressing roller 18 is placed at a lowering position Pd (see FIG. 10) and an ascending position Pu behind and above the lowering position Pd. It is pivotally supported on the front portion of the right side wall 11r by a shaft 19 extending in the width direction so as to be swingable from (see FIG. 11).

The rear swing arm 12 and the front swing arm 13 are connected to each other by a connecting arm 14 extending in the front-rear direction between them.
Specifically, the rear swing arm 12 is pivotally supported by a shaft 14r (see FIGS. 9 to 11) extending in the width direction at the rear end of the connecting arm 14, and the front swing arm 13 is the connecting arm 14. It is pivotally supported by a shaft 14f (see FIGS. 8 to 11) extending in the width direction at the front end of the above.

As a result, the connecting arm 14 interlocks the rear swing arm 12 and the front swing arm 13 so that the rear pressing roller 16 and the front pressing roller 18 move up and down while maintaining substantially the same height. That is, the rear pressing roller 16 and the front pressing roller 18 swing with each other so as to reach the descending position Pd or the ascending position Pu at the same timing.

The "descent position Pd" is a position where the rear pressing roller 16, the front pressing roller 18, and the tape cutter 25 are located below the upper surface Bu of the box body B to be conveyed, and FIGS. 7 to 10 and 10. The state shown in FIG. 12A is shown.

Specifically, the lowering position Pd of the rear pressing roller 16 presses the lower portion Td (see the same figure) of the tape T hanging by the rear side vicinity Ar (see FIG. 13A) of the rear pressing roller 16 to the rear side. It is a position where the roller 16 can be pressed against the front surface Bf of the box body B and stands by, for example, a position as shown in FIG. 13 (a).

Further, the lowering position Pd of the front pressing roller 18 is the extension piece Tr (extending piece Tr extending rearward from the rear end of the facing end portion Baa in the tape T attached to the facing end portion Baa of the upper surface Bu of the box body B. (See FIG. 15) is a position where the front pressing roller 18 presses against the rear surface Br of the box body B, and is, for example, a position as shown in FIG.

On the other hand, the "rising position Pu" is a position where the rear pressing roller 16, the front pressing roller 18, and the tape cutter 25 are above the upper surface Bu of the box body B to be conveyed. The state shown in 12 (b) is shown.

Each of the rising positions Pu of the rear pressing roller 16 and the front pressing roller 18 is a position where the tape T is pressed against the facing end portion Baa of the pair of flaps Ba having the upper surface Bu of the box body B, for example, FIG. (A) Refers to the position shown in (b).

As shown in FIGS. 7 to 11, the tape cutting arm 15 has a tape cutter 25 on the lower front side, and the tape cutter 25 is placed in front of and above the descent position Pd (see FIG. 10) and the descent position Pd. It is pivotally supported on the left side wall 11l by a shaft 26 swingably extending in the width direction from the ascending position Pu (see FIG. 11) (see FIGS. 8 and 9).

The tape cutter 25 is formed wider than the tape T, and is formed in a plate shape having a cutter cutting edge formed along the width direction at the lower end.
The ascending position Pu of the tape cutter 25 is such that when the cutter cutting edge formed at the lower end of the tape cutter 25 faces the tape T attached to the upper surface Bu of the box body B from above and descends to the descending position Pd. It is a position where the tape T can be cut, and refers to a position as shown in FIGS. 11 and 14 (a) and 14 (b).

Further, as shown in FIGS. 7 to 10 and 12 (a), the tape cutting arm 15 includes a cutter protection member 27, a cutter push-up member 28, and a cutter mounting position adjusting bracket 29 (FIGS. 7 and 12 (a)). (See) and a push-up member mounting position adjusting bracket 30.

The cutter protection member 27 is a member that protects human hands against the cutter cutting edge by covering the tape cutter 25 from the front with respect to the tape cutter 25.
As shown in FIGS. 10 and 11, the cutter protection member 27 is located at a position where the lower portion is close to the tape cutter 25 (cover position Pa covering the tape cutter 25 (see FIG. 10)) or at a position where the lower portion is separated forward (see FIG. 10). The upper end is pivotally supported on the tape cutting arm 15 side so as to be swingable from the retracted position Pb (see FIG. 11) that retracts with respect to the tape cutter 25. The cutter protection member 27 is always urged to the cover position Pa by providing a torsion spring 31 (see FIG. 8) on the shaft support portion 27a at the upper end.

Then, the cutter protection member 27 is located at the cover position Pa when the tape cutter 25 is at the descent position Pd, thereby protecting the human hand against the cutter cutting edge as described above. On the other hand, when the tape cutter 25 reaches the ascending position Pu, the cutter protecting member 27 comes into contact with the upper surface Bu of the box body B to become the retracted position Pb (see FIGS. 14A and 14B), and the tape cutter 25 This makes it possible to cut the tape T.

The cutter push-up member 28 is a cam plate that pushes the tape cutter 25 up to the ascending position Pu, and is arranged so as to be laterally displaced (one side in the width direction (left side in this example)) with respect to the tape cutter 25 (in this example, the left side). See FIGS. 7-9).

As shown in FIG. 12B, the cutter pushing member 28 has a front end 28f located in front of the cutter cutting edge and a rear portion in a state where the tape cutter 25 and the rear pressing roller 16 are each located at the rising position Pu. 28r extends in the front-rear direction so as to be located behind the lower end of the rear pressing roller 16. The rear portion 28r of the cutter push-up member 28 is inclined so as to be located upward toward the rear and extends in the front-rear direction (see FIGS. 12 (a) and 12 (b)).

The cutter push-up member 28 directly hits the front and upper corners of the box body B transported from the rear to the front with the rear 28r without the tape T in the state where the tape cutter 25 is located at the descent position Pd. Upon contact, the tape cutting arm 15 (tape cutter 25) is pushed up to the ascending position Pu (see FIGS. 13 (a) and 13 (b)).

In the cutter mounting position adjusting bracket 29 (see FIG. 12A), the tape cutter 25 is mounted on the side of the tape cutting arm 15 by using bolts or the like, and the mounting position of the tape cutter 25 on the tape cutting arm 15 is set in the front-rear direction. It is adjustable to. That is, the cutter mounting position adjusting bracket 29 makes it possible to adjust the mounting position between the state in which the tape cutter 25 is close to the rear pressing roller 16 from the front and the position in which the tape cutter 25 is separated from the front.

The push-up member mounting position adjusting bracket 30 mounts the cutter push-up member 28 on the side of the tape cutting arm 15 by using bolts or the like, and the mounting position of the cutter push-up member 28 on the tape cutting arm 15 can be adjusted in the front-rear direction. ..

By appropriately adjusting the attachment positions of the tape cutter 25 and the cutter push-up member 28 in the front-rear direction, the length of the tape T attached to the front surface Bf and the rear surface Br of the box body B can be adjusted. From the viewpoint of corresponding to the thin box body B as in the present embodiment, it is preferable that the tape cutter 25 is arranged as close as possible to the side of the rear pressing roller 16.

Further, as shown in FIGS. 7 to 12 (a) and 12 (b), the tape attaching unit 10 includes a urging spring 32 that urges the rear pressing roller 16 and the front pressing roller 18 toward the lowering position Pd. It is provided with an urging spring 33 that urges the tape cutting arm 15 toward the descent position Pd. In FIGS. 7, 11, and 12 (a) and 12 (b), the urging spring 33 is not shown.

Further, as shown in FIGS. 7 to 10, the tape sticking unit 10 includes the above-mentioned pressing rollers 18 and 16 on the front and rear sides that press the tape T against the box body B transported from the rear to the front of the transport path 4. The tape supply roller 35 (see FIG. 7) and the tape guide structure 60 for guiding the tape T supplied from the tape supply roller 35 to the rear pressing roller 16 are provided.

As shown in FIG. 7, the tape supply roller 35 is provided on the upper part of the support plate 36 extending upward from the right side wall 11r, and the center portion of the tape raw fabric TA around which the tape T is wound is oriented in the width direction. It is configured to be rotatably mounted around an axis extending to.

The tape T is pulled out from the outermost layer of the tape raw fabric TA mounted on the tape supply roller 35, and the tape T is routed to the side of the tape guide structure 60 held below. Then, the tape supply roller 35 passively rotates from the side of the tape guide structure 60 based on the tension applied to the tape T to supply the tape T of the tape original fabric TA to the tape guide structure 60 side.

The tape guide structure 60 can guide the tape T supplied from the tape supply roller 35 to the rear pressing roller 16 by the first guide roller 61, the second guide roller 62, the auxiliary guide roller 63, and the guide member 64 (FIG. 7, FIG. 7, (See FIG. 9) and a pull-up roller 65.

The first guide roller 61, the second guide roller 62, the auxiliary guide roller 63, and the pulling roller 65 are all rotatably supported around an axis extending in the width direction.

The first guide roller 61 is provided at the upper and rear corners of the right side wall 11r, and the tape T is most supplied in the process of supplying the tape T from the tape supply roller 35 (see FIG. 7) to the rear pressing roller 16. It is a roller that guides on the upstream side (the side of the tape supply roller 35), and is in contact with the non-adhesive surface Tb (see FIG. 13A) of the tape T arranged from the tape supply roller 35 from the front side and is in contact with the downstream side (the side of the tape supply roller 35). Guide to the side of the second guide roller 62).

The second guide roller 62 is provided at a position in front of the first guide roller 61 on the right side wall 11r, and the adhesive surface Ta of the tape T arranged from the first guide roller 61 (see FIG. 13A). It abuts from the rear side and guides it to the downstream side (the side of the guide member 64).

As shown in FIGS. 6 and 12 (a), the guide member 64 is provided in the rear swing arm 12 in the vicinity of the upper side of the rear side pressing roller 16 located at the descent position Pd, and is located above the second side. The tape T routed from the guide roller 62 is formed in a rail shape that guides the tape T to the rear vicinity Ar (see FIG. 13A) of the lower rear pressing roller 16 in a state of being inserted in the vertical direction. Further, the guide member 64 has a function of holding the tape T so as to prevent the tape T inserted in the vertical direction from flowing backward. In the rear side vicinity Ar of the rear side pressing roller 16, the tape lower portion Td in the hanging state is arranged so that the adhesive surface Ta faces the rear.

The auxiliary guide roller 63 is provided above and behind the guide member 64 in the rear swing arm 12, and guides the tape T routed from the second guide roller 62 to the guide member 64 from the rear side. ..

The pulling roller 65 is a roller that pulls up the tape lower portion Td located near the rear side Ar of the rear pressing roller 16 when the rear pressing roller 16 descends from the ascending position Pu to the descending position Pd.

As shown in FIG. 16, the pulling roller 65 takes the tape T from the position of the second guide roller 62 (also referred to as “tape supply position”) to the rear side near Ar of the rear pressing roller 16 at the descending position Pd. It is provided so that the front end is located in front of the shortest path (in this example, the virtual straight line La connecting the second guide roller 62 and the guide member 64) when the route is routed.

As a result, as will be described later, when the rear pressing roller 16 descends from the ascending position Pu to the descending position Pd, the pulling roller 65 comes into contact with the tape T from the rear side and pulls up the tape lower portion Td.

Here, when the rear pressing roller 16 returns from the ascending position Pu to the descending position Pd, that is, when the rear swing arm 12 rotates counterclockwise in FIG. 16, the connecting arm 14 moves forward. It works together to move. In this embodiment, the pulling roller 65 is provided on the above-mentioned connecting arm 14 (see FIG. 16). As a result, as shown in FIG. 16, the pulling roller 65 moves in the direction of pulling up the tape T based on the movement when the rear pressing roller 16 returns from the ascending position Pu to the descending position Pd (rearward retracting position). It is configured to move from Pr to the forward pulling position Pf).

In addition, as shown in FIGS. 8 to 11, the tape sticking unit 10 adjusts the height of the rear pressing roller 16 at the descent position Pd with respect to the height of the transport path 4 (conveyor belt 47). The lower limit height adjusting unit 80 is provided.

The lower limit height adjusting portion 80 is a bush formed of a protrusion 81 protruding upward from the middle portion of the upper side of the connecting arm 14 and an elastic member such as rubber attached to the right side wall 11r on the front side of the protrusion 81. It is composed of a stopper 82 in the shape of a stopper 82.

Here, as described above, when the rear pressing roller 16 returns from the ascending position Pu to the descending position Pd, the connecting arm 14 moves forward in conjunction with the rear swing arm 12. The stopper 82 is provided at a position where the protrusion 81 provided on the connecting arm 14 abuts when the rear pressing roller 16 is located at the lowering position Pd (see FIGS. 9 and 10). As a result, the lower limit height adjusting unit 80 is configured to restrict the rear pressing roller 16 and the front pressing roller 18 from descending any further.

Further, as shown in FIGS. 9 to 11, the stopper 82 is capable of adjusting the mounting position with respect to the right side wall 11r in the front-rear direction. Therefore, the lower limit height adjusting unit 80 adjusts the heights (that is, the lower limit position) of the rear pressing roller 16 and the front pressing roller 18 at the descending position Pd by adjusting the mounting position of the stopper 82. Can be done.

In addition, as shown in FIGS. 9 to 11, the tape sticking unit 10 adjusts the height of the front pressing roller 18 at the ascending position Pu with respect to the height of the transport path 4 (convey belt 47). The upper limit height adjusting portion 85 is provided.

The upper limit height adjusting portion 85 is provided at a position on the right side wall 11r that abuts from above on the front swing arm 13 located at the ascending position Pu (see FIG. 11). As a result, the upper limit height adjusting portion 85 is configured to restrict the rear pressing roller 16 and the front pressing roller 18 from rising any further.

Further, the upper limit height adjusting portion 85 makes it possible to adjust the mounting position with respect to the right side wall 11r in the vertical direction. Therefore, the upper limit height adjusting unit 85 can adjust the heights (that is, the upper limit position) of the rear pressing roller 16 and the front pressing roller 18 at the ascending position Pu.

As shown in FIGS. 7 to 10, the tape sticking unit 10 is provided with a brush 90 at the lower front side to sweep dust adhering to the facing end portions Baa of the pair of flaps on the upper surface Bu of the box body B. ing. However, the brush 90 is not essential, and the tape sticking unit 10 may be configured without the brush 90. When the brush 90 is provided, it is not limited to being provided in the front lower portion of the tape sticking unit 10 as in the present embodiment, but can be provided in at least one of the front lower portion and the rear lower portion.

Subsequently, using the sealing device 1 described above, the tape T is attached to the facing end portions Baa of the pair of flaps Ba that mainly constitute the upper surface Bu of the box body B to seal the box body B as shown in FIG. The procedure will be described with reference to FIGS. 13 (a) and 13 (b), FIGS. 14 (a) and 14 (b), and FIG. In FIGS. 13 (a) and 13 (b), 14 (a) and 15 (b), and 15 are shown with dots in order to clarify the box body B.

The operator stands on the back side of the sealing device 1, turns on the operation switch 49, drives the transport belt 47, and unexpectedly opens the flap Ba of the upper surface Bu of the box body B placed on the box supply base 22. Push the box body B straight into the front (downstream side) of the transport path 4 while holding both sides in the width direction by hand so as not to be present. When the box body B reaches the box transport table 21, it is automatically transported by the transport belt 47 and advances along the transport path 4.

As shown in FIG. 13A, in the box body B advancing in the transport path 4, the tape lower portion Td arranged on the rear side vicinity Ar of the rear side pressing roller 16 at the descent position Pd is the front surface of the box body B. It comes into contact with Bf and is attached to the front surface Bf of the box body B by pressing against the rear pressing roller 16.

Further, when the box body B is advanced by the transport belt 47, the rear pressing roller 16 is pushed up from the descending position Pd to the ascending position Pu as shown in FIG. 13B, and at the same time, the posterior pressing roller 16 is pushed up. The front pressing roller 18 interlocked with the above also rises from the descending position Pd to the ascending position Pu.

Subsequently, the cutter push-up member 28 provided on the tape cutting arm 15 abuts on the front and upper corners of the box body B, so that the tape cutter 25 is also pushed up from the descent position Pd to the ascending position Pu (FIG. 13 (b), see FIG. 14 (a)). At this time, the cutter protection member 27 changes from the cover position Pa to the retracted position Pb.

Then, since the urging force (restoring force) of the urging spring 32 acts downward on the rear pressing roller 16 and the front pressing roller 18 pushed up to the ascending position Pu, these rear pressing rollers 16 and the front pressing are performed. The tape T is pressed against the box body B by the roller 18. As a result, as shown in FIGS. 14A and 14B, the rear pressing roller 16 and the front pressing roller 18 face the flap Ba of the box body B as the box body B advances in the transport path 4. The tape T can be attached from the front end to the rear of the end portion Baa.

As shown in FIG. 14B, when the rear end of the advancing box body B passes forward of the rear side pressing roller 16, the box body B that receives the pressure from the rear side pressing roller 16 disappears. Therefore, in the tape T, the extending piece Tr from the rear end of the box body B to the rear is kept in a state of being stretched in the front-rear direction by the pressing of the rear pressing roller 16.

Further, the cutter push-up member 28 provided on the tape cutting arm 15 directly presses the box body B downward on the side of the tape T without passing through the tape T at the ascending position Pu, but in FIG. 14 (b). When the rear end of the box body B passes forward of the rear end 28rr of the cutter push-up member 28 as shown by the virtual line of the box body B, the box body B that pushes up the cutter push-up member 28 (tape cutting arm 15) It will no longer exist. Therefore, the tape cutting arm 15 descends from the ascending position Pu to the descending position Pd by the urging force of the urging spring 33. At that time, the rearward extension piece Tr of the tape T can be cut by the tape cutter 25 (see FIG. 14 (b)).

Subsequently, as shown in FIG. 15, when the rear end of the box body B passes forward of the front side pressing roller 18, the front side pressing roller 18 is not supported by the box body B, and therefore, due to the urging force of the urging spring 32. It descends to the descent position Pd. At that time, of the cut tape T, the extra length portion of the extension piece Tr remaining in the state of extending rearward from the rear end of the box body B is attached to the rear surface Br of the box body B by the front pressing roller 18. It is pressed and pasted (see FIG. 15).

On the other hand, of the cut tape T, the lower tape portion Td held by the guide member 64 and hanging downward from the guide member 64 is rearward in preparation for attachment to the front surface Bf of the box body B to be subsequently conveyed. It is arranged in a state of hanging down from Ar near the rear side of the side pressing roller 16 (see FIG. 15).

Further, as described above, when the front pressing roller 18 descends from the ascending position Pu to the descending position Pd, the posterior pressing roller 16 also descends (returns) to the descending position Pd in conjunction with the movement of the front pressing roller 18. do. Then, as shown in FIG. 16, when the rear pressing roller 16 descends from the ascending position Pu to the descending position Pd, as the connecting arm 14 moves forward, the pulling roller 65 moves forward from the rear retracting position Pr. It is possible to move to the pulling position Pf (see the thick arrow DA in FIG. 16) and pull up the tape lower portion Td hanging downward from the guide member 64 (see the thick arrow DB in FIG. 16).

Therefore, the tape lower portion Td arranged in the rear side vicinity Ar of the rear side pressing roller 16 at the descending position Pd can be arranged so as not to excessively hang down with respect to the rear side pressing roller 16.

Therefore, in the same procedure as described above, when the tape lower portion Td located near the rear side Ar of the rear side pressing roller 16 is attached to the front surface Bf of the box body B to be subsequently conveyed by the rear side pressing roller 16. The lower part of the tape Td can be attached to the front surface Bf of the box body B with an appropriate length.
As described above, the attachment of the tape T to the box body B is completed.

As shown in FIGS. 1 to 5, the sealing device 1 of the present embodiment described above is attached to the box transport unit 40 that transports the box body B from the rear to the front of the transport path 4 and the upper surface Bu of the box body B. The tape T is attached along the transport direction (Lf) to the opposite end Baa (see FIG. 17) of the pair of flaps Ba protruding toward the center so that the opening can be closed from both outer sides in the width direction of the opening. A tape sticking unit 10 is provided, and as shown in FIGS. 7 to 12 (a) and 12 (b), the tape sticking unit 10 has a descent position Pd and an ascending position Pu in front of and above the descent position Pd. The tape T is pressed against the front surface Bf of the box body B at the descent position Pd, and the tape T is pressed against the opposite end portion Baa of the box body B at the ascending position Pu. A tape provided with a roller 16 (pressing portion) and particularly located near the rear side Ar of the rear pressing roller 16 when the rear pressing roller 16 descends from the ascending position Pu to the descending position Pd, as shown in FIG. It is characterized by providing a pulling roller 65 (pulling means) for pulling up the lower Td.

According to the above configuration, the rear pressing roller 16 is located forward and above the descending position Pd (see FIG. 12A) when it is located at the ascending position Pu (see FIG. 12B). Therefore, as shown in FIG. 15, when the rear pressing roller 16 descends from the ascending position Pu to the descending position Pd, the tape lower portion Td arranged in the rear vicinity Ar of the rear pressing roller 16 is on the rear side. It tries to descend while moving backward together with the pressing roller 16.

On the other hand, according to the above configuration, as shown in FIG. 16, the guide member 64 is located from the position (tape supply position) of the second guide roller 62 located above the rear pressing roller 16 located at the descent position Pd. A pull-up roller 65 is provided at a position ahead of the shortest path (virtual straight line La) when the tape T is routed to the position by the shortest path.

Therefore, when the rear pressing roller 16 descends from the ascending position Pu to the descending position Pd, the tape lower portion Td arranged in the rear vicinity Ar of the rear pressing roller 16 moves backward together with the rear pressing roller 16. The pulling roller 65 hinders the descent while moving. In other words, the lower tape Td is pulled upward and forward by the pulling roller 65. As a result, the tape lower portion Td can be arranged so as not to excessively hang down with respect to the rear pressing roller 16 in Ar near the rear side of the rear pressing roller 16.

Here, at the start of attaching the tape T to the box body B using the rear pressing roller 16, as shown in FIG. 13A, the tape lower portion Td arranged in the rear vicinity Ar of the rear pressing roller 16 Is attached by being pressed against the front surface Bf of the box body B by the rear pressing roller 16.

At that time, since the tape lower portion Td arranged in the rear side vicinity Ar of the rear side pressing roller 16 can be positioned so as not to excessively hang down with respect to the rear side pressing roller 16, as described above, the box body. Even when B is thin, the lower end of the tape lower part Td that hangs down with Ar near the rear side of the rear pressing roller 16 so that the tape lower part Td fits in the height of the front part of the box body B is the box body. It can be pasted (so that it is located above the lower end of the front surface Bf of B).

Therefore, even in the thin box body B, not only the facing end portion Baa of the flap Ba formed on the upper surface Bu having the opening of the box body B but also the surface on the side adjacent to the upper surface Bu, that is, the front surface Bf is reached. The tape T can be properly attached up to.

Specifically, the lower end of the tape T attached to the front surface Bf of the box body B remains below the lower end of the box body B, and the remaining portion is the transport roller 5 or the like provided in the box transport unit 40. There is no risk of unintentionally adhering to peripheral parts, degrading the appearance of the box body B after the tape T is attached, or causing the tape T attached to the box body B to peel off.

As a result, unlike the conventional case, it is not necessary to store the thin delivery (contents) in the thick box B having an excessive thickness with respect to the thickness of the thin delivery, and it is not necessary to store the thin delivery (contents) in the thick box B during transportation by truck. , Since the capacity that can be loaded with the delivered goods can be substantially increased in the cargo bed of the truck or the distribution warehouse at the time of temporary storage, the transportation efficiency of the delivered goods can be improved. Further, since the thin delivery can be sealed with the box body B having a size suitable for the size of the thin delivery, an excessive amount of the thin delivery is prevented from being inadvertently moved inside the box body B. It is not necessary to store the cushioning material and fixing members together with the delivered goods, which can contribute to resource reduction.

Further, since the sealing device 1 of the present embodiment can support the automation of the sealing work by attaching the tape T to the thin box body B, a large amount of delivery sealed with the thin box body B is possible. Delivery of goods can be realized.

Therefore, the size (thickness) of the delivered item that can be posted to the mailbox is generally 40 mm or less for a large size and 30 mm or less for a small item. However, the sealing device 1 of the present embodiment is used for a mailbox. Even for such a thin box body B, which is required for mailing, the sealing work by attaching the tape T can be automatically performed.

Therefore, it is possible to deliver a large amount of deliveries enclosed in a thin box body B by using a mailbox, and it is possible to significantly reduce the labor and cost of collecting deliveries, especially at the time of delivery. Can be done.

As an aspect of the present invention, as shown in FIG. 16, the pulling roller 65 pulls up the tape T based on the movement (see FIG. 15) when the rear pressing roller 16 returns from the ascending position Pu to the descending position Pd. It is configured to move in a direction, that is, forward.

According to the above configuration, when the rear pressing roller 16 returns from the ascending position Pu to the descending position Pd, the pulling roller 65 itself moves in the direction of pulling up the tape T (that is, the pulling position Pf forward from the retracting position Pr). Therefore, for example, the tape lower portion Td can be positively pulled up as compared with the case where the pulling roller 65 remains in a fixed position (for example, always fixed at the pulling position Pf).

Further, the rear pressing roller 16 returns from the ascending position Pu to the descending position Pd at the timing when the tape T is attached to the box body B. According to the above configuration, the pulling roller 65 is configured to pull up the tape T at this timing, so that the pulling operation of the tape T does not hinder the sticking operation of the tape T to the box body B. Moreover, the pulling roller 65 appropriately attaches the tape lower portion Td arranged in the rear vicinity Ar of the rear pressing roller 16 before starting the work of attaching the tape T to the box body B to be conveyed next. After the pulling up to the hanging length is completed, it is possible to prepare for the work of attaching the tape T to the box body B to be conveyed next.

As an aspect of the present invention, as shown in FIGS. 14 (a) and 14 (b), the movement between the descending position Pd and the ascending position Pu is in front of the posterior pressing roller 16 (posterior pressing portion). The front pressing roller 18 (front pressing) is configured to be possible, and the tape T is pressed against the rear surface Br of the box body B at the descending position Pd, and the tape T is pressed against the facing end portion Baa of the box body B at the ascending position Pu. As shown in FIGS. 7 to 15, the rear swing arm 12 for swinging the rear pressing roller 16 between the descending position Pd and the ascending position Pu, and the front pressing roller 18 for the descending position. The front swing arm 13 that swings between Pd and the ascending position Pu is connected to the rear swing arm 12 and the front swing arm 13, and the rear pressing roller 16 and the front pressing roller 18 are substantially the same. As shown in FIGS. 10 to 12 (a) and 16 (b), a connecting arm 14 for interlocking the rear swing arm 12 and the front swing arm 13 so as to move up and down while maintaining the height is provided. In addition, the pulling roller 65 is provided on the connecting arm 14.

According to the above configuration, when the rear pressing roller 16 returns from the ascending position Pu to the descending position Pd, the connecting arm 14 moves in conjunction with the rear swing arm 12. Then, by providing the pulling roller 65 on such a connecting arm 14, as shown in FIG. 16, when the rear pressing roller 16 returns from the rising position Pu to the falling position Pd, the pulling roller 65 itself is attached to the lower part of the tape. It can be moved in the pulling direction of Td.

That is, when the rear pressing roller 16 moves from the ascending position Pu to the descending position Pd, the pulling roller 65 positively pulls up the tape lower portion Td while keeping the fixed position as described above. Td can be raised.

Further, by providing the pulling roller 65 on the connecting arm 14, a drive source or the like for moving the pulling roller 65 forward when the rear pressing roller 16 descends from the ascending position Pu to the descending position Pd is separately provided. At least, the pulling roller 65 can be efficiently moved forward as described above by utilizing the movement of the connecting arm 14 when the rear pressing roller 16 descends.

As an aspect of the present invention, as shown in FIGS. 12 (a) and 12 (b), the vehicle moves between the descent position Pd and the ascending position Pu in the vicinity of the front side of the rear pressing roller 16 and is moved from the ascending position Pu to the descent position. It is preferable to provide a tape cutting arm 15 (tape cutting means) for cutting the tape T when moving to Pd, and to arrange the tape cutter 25 provided on the tape cutting arm 15 as close as possible to the side of the rear pressing roller 16. ..

Here, the tape T is cut by the tape cutter 25 provided in the tape cutting arm 15 when the tape cutting arm 15 moves from the ascending position Pu to the descending position Pd, and the rear pressing roller 16 located at the descending position Pd is cut. It is arranged in a state of hanging down to Ar near the rear side.

Then, as described above, by arranging the tape cutter 25 as close as possible to the side of the rear pressing roller 16, the tape T is cut by the tape cutter 25 at a position as close as possible to the side of the rear pressing roller 16. be able to.

Therefore, the length of the tape lower portion Td arranged in the rear side vicinity Ar of the rear side pressing roller 16 located at the descending position Pd can be shortened as much as possible below the rear side pressing roller 16.

As an aspect of the present invention, as shown in FIGS. 9 to 11, the tape sticking unit 10 has a lower limit height for adjusting the height of the rear pressing roller 16 at the descent position Pd with respect to the height of the transport path 4. It is provided with a height adjusting unit 80 (height adjusting means).

According to the above configuration, the height of the rear pressing roller 16 at the descent position Pd can be adjusted by the lower limit height adjusting unit 80 with respect to the height of the box body B transported along the transport path 4, so that the box can be adjusted. Even when the body B is thin, the rear pressing roller 16 can press the tape T at an appropriate height with respect to the front surface Bf of the box body B.

Therefore, even when the box body B is thin, the tape T can be appropriately attached to the front surface Bf of the box body B, and the rear pressing roller 16 is moved from the descent position Pd as the box body B advances. It can be reliably pushed up to the ascending position Pu.

Further, the box-body sealing device of the present invention is not limited to the configuration and examples of the sealing device 1 of the present embodiment described above.

For example, in the above-described embodiment, the sealing device 1 is applied to the thin box body B when the box body B to be automatically sealed by attaching the tape T is thin. It may be applied not only to the body B but also to a normal box body B (thick box body B).

That is, in the sealing device 1 of the present embodiment, the thickness of the box body B is set by adjusting the height of the unit support 3 to set the tape sticking unit 10 and the upper box transport unit 40U to arbitrary heights. Regardless of this, the box body B can be automatically sealed by attaching the tape T.

Further, if the pulling means of the present invention can pull up the tape lower portion Td located near the rear side Ar of the rear pressing roller 16 when the rear pressing roller 16 descends from the ascending position Pu to the descending position Pd. The configuration of the pulling roller 65 of the present embodiment is not limited to this.

Specifically, the pulling means of the present invention is not limited to the configuration provided in the connecting arm 14, and may be provided directly on the side wall 11 or on the rear swing arm 12, for example. Further, the pulling means of the present invention is not limited to the configuration in which the pulling roller 65 itself is moved in the pulling direction of the tape lower portion Td, and the pulling roller 65 is based on the fluctuation of the relative position with the rear pressing roller 16 at a fixed position. It may be configured to pull up the lower part Td of the tape.

1 ... Box sealing device 4 ... Transport path 10 ... Tape sticking unit 12 ... Rear swing arm (swing arm)
14 ... Connecting arm 15 ... Tape cutting arm (tape cutting means)
16 ... Rear pressing roller (pressing part, rear pressing part)
18 ... Front pressing roller (front pressing part)
40 ... Box transport unit 65 ... Pulling roller (pulling means)
B ... Box body Bf ... Front surface Bu of the box body ... Top surface of the box body Br ... Rear surface of the box body Baa ... Opposing ends of the pair of flaps Lf ... Transport direction T ... Tape Pd ... Descent position Pu ... Ascending position Ar ... Rear side Near the rear side of the pressing roller Td ... Lower part of the tape

Claims (4)

A box transport unit that transports the box body from the rear to the front of the transport path,
A tape sticking unit for sticking tape along the transport direction is provided at the opposite end of a pair of flaps protruding toward the center so that the opening can be closed from both outer sides in the width direction of the opening on the upper surface of the box. It is a box-body sealing device.
For the above tape sticking unit,
It is configured to be movable between the descent position and the ascending position above the descent position, and the tape is pressed against the front surface of the box body at the descent position and the box body at the ascending position. A pressing portion for pressing the tape against the facing end portion is provided.
When the pressing portion descends from the ascending position to the descending position, a pulling means for pulling up the lower portion of the tape located near the rear side of the pressing portion is provided .
The pulling means moves in a direction of pulling up the tape so that the distance between the pulling means and the pressing portion becomes long, based on the movement when the pressing portion returns from the rising position to the descending position. sealing device configuration as the <br/> box body. The tape is routed along a tape lower route extending downward from above the pulling means toward the pressing portion.
A swing arm that swings the pressing portion between the descent position and the rise position, and one end connected to the swing arm and one end to the other end so as to cross the tape lower wiring path. Equipped with a connecting arm that extends to
The pulling means is provided on the connecting arm and is provided.
The above connecting arm
The pulling means is moved from one end side to the other end side with respect to the tape lower wiring path in conjunction with the displacement of the swing arm when the pressing portion descends from the ascending position to the descending position. The box-body sealing device according to claim 1 , which is configured to be configured. 2 . The described box sealing device. A tape cutting means for moving between the descending position and the ascending position and cutting the tape when moving from the ascending position to the descending position is provided in the vicinity of the front side of the pressing portion.
The box-sealing device according to any one of claims 1 to 3 , wherein the tape cutting means is arranged close to the pressing portion.

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