JPH11278433A - Tape cutting mechanism in binding apparatus for sheaf of pieces of paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut a tape for binding a sheaf of pieces of paper without applying a drawing force to the tape. SOLUTION: This tape cutting mechanism in a binding apparatus for a sheaf of pieces of paper is so designed that, after a tape (b) forming a loop around a postal card bundle (a) which is a sheaf of paper is passed around the postal card bundle (a) and drawn, a superposed portion at the ends of the tape (b) are welded, and that the tape is cut off on the feed side at the welded portion. The tape cutting mechanism is moved up relative to a welding auxiliary body 9 disposed at a stopping portion of the tape cutting mechanism so as to be positioned on the underside of the unit set sheet bundle, and sandwiches the superposed ends of the tape (b) between the welding auxiliary body 9 and the tape cutting mechanism when the mechanism is moved up, thus welding the superposed ends of the tape (b). The tape cutting mechanism comprises a heater 10 provided unitarily with a cutter 11, a clamp 12 for grasping the vicinity of the top end of the tape (b) between the welding auxiliary body 9 and the clamp 12, and a cutter receiver 13 which moves up and down unitarily with the cutter 11. Since a shearing force is applied to the tape (b) between the heated cutter 11 and the cutter receiver 13, tension is not required as conventional in practice, and the tape (b) can be easily cut off while being melted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-sheet paper, for example, a postcard conveyed by a conveying device from a single-sheet paper feeder, is separated by a sorter, and a predetermined number of the separated postcards are deposited by a stacker. The present invention relates to the above-mentioned banding device of the unit for producing a single-sheet bundle of sheets to be attached with a display tag showing the contents of the sorting by the display tag attaching device and banding with the banding device. The present invention relates to a tape cutting mechanism for fusing together tapes to be bound and separating a tape supply side.

[0002]

2. Description of the Related Art As shown in FIG. 12, a tape-cutting mechanism 100 in a conventional single-piece sheet bundle banding device is a welding auxiliary member arranged below a postcard bundle a which is a single-piece sheet bundle. 101, a heater 102 for ascending and descending with respect to the welding auxiliary body 101, and for welding the supply side end of the tape b overlapping the leading end of the tape b between the welding auxiliary body 101 when the heater 102 rises; A cutter 103 provided separately from the heater 102 and arranged so as to protrude obliquely upward at a distance from the heater tip; and a clamp 104 provided on the lower surface of the welding auxiliary body 101 and gripping the vicinity of the tip of the tape b. Is generally composed of

In order to weld and cut the overlapped tapes b by the tape cutting mechanism 100, when the tip of the tape b, which makes the postcard bundle a make a round, reaches the lower side of the welding auxiliary body 101, the tape 104 is clamped by the clamp 104. b between the welding auxiliary body 104 and the tape supply roller 1
05 is rotated in the reverse direction to draw down, the heater 102 is raised, and the above-mentioned portion where the tape b overlaps is welded while being pressed against the welding auxiliary body 101. At the same time as the welding process, the tape b is attached to the blade at the tip of the cutter 103 extending obliquely upward on the supply side by a tape supply roller 10.
While being squeezed by 5, it is pressed and cut.

[0004]

In the above-mentioned conventional tape cutting mechanism 100, the cutter 103 is disposed obliquely, and the tape b is cut by pressing the tape b against the cutter 103 by the drawing force (tension) of the tape supply roller 105. Therefore, if the tension is reduced, cutting cannot be performed. Then, when the tension of the tape b is set to be larger than the predetermined value and the cutting is performed, deformation such as warpage is likely to occur,
In particular, there is a problem that the method cannot be applied to postcards having a small number of single-sheet sheets.

An object of the present invention is to solve the problems of the conventional tape cutting mechanism, and an object of the present invention is to provide a tape cutting mechanism in a banding device for a single-sheet sheet bundle that solves this problem.

[0006]

According to a first aspect of the present invention, there is provided an image forming apparatus, comprising: a tape fed from a tape supply member for feeding and rewinding a tape; After forming a loop and tightening the loop-shaped tape to the single-sheet paper bundle at the predetermined position with a predetermined drawing force, the overlapping portion between the tape front end and the tape intermediate portion is welded, and the welded portion is formed. A tape cutting mechanism in a single-piece sheet bundle strapping device configured to cut off a tape in the immediate vicinity of a single-piece sheet bundle, and a welding auxiliary body arranged below the single-piece sheet bundle at the strapping position; A heater that ascends and descends with respect to the auxiliary body and welds the overlapping tapes sandwiched between the welding auxiliary body when it rises, and one heater side part corresponding to the tape supply side A cutter whose upper edge protrudes above the upper end of the heater, and a clamp which is provided so as to move up and down with respect to the lower surface of the welding auxiliary body, and grips the vicinity of the tape tip between the welding auxiliary body and And a cutter receiver provided integrally with the clamp and located at a position corresponding to the blade portion of the cutter.

According to a second aspect of the present invention, there is provided a tape supply member for feeding and unwinding a tape, a portion near a leading end of the tape sent from the tape supply member, and a single sheet bundle in a transfer path. A loop forming member for rotating and forming a loop with a tape guided by a track frame provided so as to surround the stop portion, and when forming the loop with the loop forming member, the tape is formed of a single-sheet paper bundle portion. A guide for guiding the tape to be located on the outside, and a banding assisting guide for releasing the guided tape from the guiding state, and after tightening the released tape to the single-sheet sheet bundle, A tape placed under the single-sheet bundle to cut the tape at the supply side of the welded portion while welding the tape end and the loop end of the tape supply side to overlap and weld. A tape cutting mechanism in a banding device for a single piece of paper bundle comprising a paper cutting mechanism, wherein a welding auxiliary body arranged at a stop portion below the single piece of paper bundle, The heater that welds the tapes that overlap each other when sandwiched between the welding auxiliary body and the heater is provided integrally with the heater side so as to correspond to the tape supply side. A cutter protruding above the upper end of the heater, a clamp provided so as to move up and down with respect to the lower surface of the welding auxiliary body, and a clamp for gripping the vicinity of the leading end of the tape between the welding auxiliary body, and a cutter integrally provided with the clamp. And a cutter receiver corresponding to the blade portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention applied to banding a postcard as a single piece of paper will be described below in detail with reference to the accompanying drawings. Here, FIG. 1 of the accompanying drawings
Is a schematic diagram of a unit for producing a single piece of paper, FIG. 2 is a schematic diagram of a banding device, FIG. 3 is an enlarged view of a main part, FIG. 4 is a partial view of the tape after welding and cutting, and FIGS. FIG. 5 is a perspective view showing a state before banding,
6 is a perspective view showing a state in which the loop is being formed, FIG. 7 is a perspective view showing a state after the loop is formed, FIG. 8 is a perspective view showing a state in which the tape is released from the banding auxiliary guide, and FIG. 9 is a state after welding and cutting the tape. FIG. 10 is a perspective view of the end state of the strapping, and FIG. 11 is a flowchart of the strapping operation.

As shown in FIG. 1, the strapping device 1 constitutes a part of a unit for producing a single-sheet sheet bundle.
The unit for forming the single-sheet sheet bundle sorts single-sheet sheets, for example, postcards, which have been conveyed from the single-sheet sheet supply device A by the conveyance device B, by the sorting device C, and the stacker device D forms a predetermined number of postcards. The stacking is performed, a display tag indicating the contents of the sorting is attached by the display tag attaching device E, and the banding device 1 performs banding. The display tag attaching device E and the banding device 1, and the banding device 1 and the stacking unit (not shown)
Each is connected by a transfer path 5.

As shown in FIG. 2 and FIGS. 5 to 10, the banding device 1 is provided with a tape b fed from a forward / reverse rotatable tape supply roller 2 which is a tape supply member for feeding and pulling back the tape b. Is formed on a postcard bundle a as a single piece of paper bundle to form a loop, and the tape b on which the loop is formed is tightened to the postcard bundle a with a predetermined drawing force. Tape welding and cutting constituting a tape cutting mechanism arranged so as to be positioned below the postcard bundle a for overlapping and welding the supply side loop end of the tape b and separating the tape b near the welded portion. And member 4.

As shown in FIG. 2, the tape supply roller 2 drives the one (lower) roller 2a by rotating the roller forward and reverse, and feeds out the tape b in the forward rotation and the tape in the reverse rotation. b is pulled back and fastened to the postcard bundle a.

As shown in FIGS. 2 to 10, the loop forming member 3 is a track frame provided so as to surround a stop portion which is a predetermined position for stopping the postcard bundle a in the transfer path 5 for transferring the postcard bundle a. It comprises a barrel 6 and a rotating body 7a which is guided by the ring 6 and rotates, and has a grip 7b provided at its tip for gripping the vicinity of the tip of the tape b. The ring 6
Is formed so as to take a trajectory outside the four guide rods 8a of the banding auxiliary guide 8 described later.

A tape b forming a loop by the loop forming member 3 is guided outside the postcard bundle a between the postcard bundle a located at the stop portion and the ring 6, and the tape b is guided by the tape. A banding assisting guide 8 for releasing the tape b is provided. The banding assisting guide 8 has four guide rods 8a extending horizontally in a direction perpendicular to the ring 6, respectively.

As clearly shown in FIG. 3, the tape welding / cutting member 4 is provided with a welding auxiliary body 9 arranged below the postcard bundle a at the stop portion of the transfer path 5, and the welding auxiliary body 9 And a heater 10 for welding the tip of the tape b and the loop end on the tape supply side, which are sandwiched between the welding auxiliary body 9 and the welding when the ascent is lifted, and stand up along the heater 10. A cutter 11 for cutting a supply side of the welding portion, the tip of which protrudes above the upper end of the heater 10; and a cutter 11 provided below the welding auxiliary body 9 so as to be able to move up and down. A clamp 12 capable of gripping the vicinity of the tip of the tape b between the lower surface and the lower surface;
A cutter receiver 13 provided integrally with the clamp 12 and corresponding to the position of the cutter 11.

Then, this tape welding and cutting member 4
After a loop is formed outside the postcard bundle a, the vicinity of the leading end of the tape b is gripped by being clamped by contacting the lower surface of the welding auxiliary body 9 with the clamp 12, and the tape b is fed to the tape supply roller 2.
Then, the heater 10 is lifted, and the leading end of the tape b and the loop end of the tape supply side are pressed against the welding auxiliary body 9 for welding, and the supply side of the tape b is heated together with the heater 10. Cutter 11
And is cut by the shearing force between the cutter 11 and the cutter receiver (see FIG. 3). As described above, since the cutter 11 is erected along the heater 10, the cut tape b is cut at a position near the welded portion.

As shown in FIGS. 2 and 5 to 10, the banding auxiliary guide 8 is composed of two pairs of upper and lower guide rods 8 extending horizontally.
The two guide rod supports 14 extending in the vertical direction, each of which has a fixed base end, and enter or exit inside two pairs of upper and lower guide rods 8a, and are hung between the guides 8a during the entrance. Inside the tape b in the state (the guide rod support 14
And a pair of tape releasing members 16 formed at each end. The guide rod support 14 is horizontally moved with the guide rod 8a in a direction orthogonal to the direction in which the loop of the tape b extends, if necessary.
The guide rod 8a is configured to be displaced between a guide position where the tape b is applied and a non-guide position where the tape b is not applied. Further, the guide rods 8a are arranged such that the postcard bundle a is accommodated inside the loop formed by the wrapped tape b. Further, the tape release body 16 approaches each other in a direction perpendicular to the guide rod 8a so that the pair of upper and lower locking pieces 15 enter and exit the inside of the pair of upper and lower guide rods 8a. Alternatively, it is horizontally moved by a driving mechanism (not shown) so as to separate from each other. In FIG. 2, reference numeral 17 denotes an auxiliary clamp, which is used to hold the welded portion on the side opposite to the clamp 12 at the time of tape welding to suppress the movement of the tape b.

When the tape b is hung on each guide rod 8a at the guide position, the banding assisting guide 8 causes the tape release members 16 to enter in a direction in which the tape release members 16 approach each other. Is inserted into the tape b (on the side of the guide rod support 14), the tape is displaced to the non-guide position, and the tape b is released from each guide rod 8a.

Next, based on FIG.
Will be described. First, when the previous banding is completed (Step 50), the banded bundle of postcards a is discharged from the stop portion of the transfer path 5 toward the collecting portion (Step 5).
1) Then, the postcard bundle a to be hung up enters (step 52), and the postcard bundle a is stopped on the welding auxiliary body 9 at the stop portion of the transfer path 5. In parallel with the discharging operation (step 51) and the entering operation (step 52) of the postcard bundle a,
The vicinity of the leading end of the tape b fed by the tape supply roller 2 rotating forward is gripped by the gripping portion 7b of the rotating body 7a of the loop forming member 3, and the rotating body 7a is rotated once along the ring 6 to form the gripping portion 7b. The tip side further than the vicinity of the tip of the tape b gripped by the above is gripped by the clamp 12. When the rotating body 7a makes one rotation, the tape b is hung on each guide rod 8a at the guide position of the banding assist guide 8, and a loop of the tape b is formed outside the postcard bundle a. Here, the tape release members 16 enter in a direction in which they approach each other, and the locking pieces 15 are inserted inside the tape b. Then, the banding auxiliary guide 8 is displaced to the non-guide position, and the tape b
Is released from each guide rod 8a.

Subsequently, the tape b released from each guide rod 8a and slackened is drawn to the supply side by rotating the tape supply roller 2 in the reverse direction (step 54).
When the tape b is squeezed, the heater 10 is raised, and the leading end portion of the overlapped tape b and the supply-side loop end of the tape b are pressed against the welding auxiliary body 9 to be welded, and the tape b in the squeezed state is removed. On the supply side close to the welded portion, the heater 10 rises with the heater
While the tape b is melted by the cutter 11 heated in the above, the tape b is cut while sandwiching it between the welding auxiliary body 9 (step 55), and the banding operation is completed (step 56). Note that the postcard bundle a on which the band is attached is conveyed along the transfer path 3 toward the stacking unit.

The present invention is not limited to the above-described embodiment. For example, a single sheet bundle may be different from the postcard bundle a. Further, the number of guide rods 8a of the guide member 8 is not limited to four, but may be three or five or more.

[0021]

As described above, according to the first aspect of the present invention, since the cutter is heated and receives a shearing force between the cutter and the cutter receiver, the tape is easily cut while melting. Since there is no need to apply tension to the tape and cut it as in the conventional example, the single-sheet paper bundle to be processed does not deform such as warping, and can be applied to a small number of single-sheet paper bundles. It works.

According to a second aspect of the present invention, in addition to the effects of the first aspect of the present invention, the loop of the tape is formed as a single piece by gripping the vicinity of the leading end of the tape with a loop forming member. Since it is formed around the sheet bundle, no jam occurs and the degree of freedom in selecting the tape b is high, and the loop of the tape is guided outside the single-sheet sheet bundle by the tape hooking auxiliary guide. Since it is possible to simultaneously discharge and enter a single-sheet sheet bundle, the processing time can be shortened.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a unit for producing single-sheet paper.

FIG. 2 is a schematic diagram.

FIG. 3 is an enlarged view of a main part.

FIG. 4 is a partial view of the tape after welding and cutting.

FIG. 5 is a perspective view of a state before staking.

FIG. 6 is a perspective view showing a state in which a loop is being formed.

FIG. 7 is a perspective view showing a state after a loop is formed.

FIG. 8 is a perspective view showing a state in which the tape is released from the banding assisting guide.

FIG. 9 is a perspective view showing a state after welding and cutting of the tape.

FIG. 10 is a perspective view showing a state in which the strapping is completed.

FIG. 10 is a flowchart of a banding operation.

FIG. 12 is a schematic view of a conventional example.

[Description of Signs] a postcard bundle b tape 1 banding device 2 tape supply roller 3 loop forming member 4 tape welding block 5 transfer path 6 ring 7a rotating body 7b gripping portion 8 banding auxiliary guide 9 welding auxiliary body 10 heater 11 cutter DESCRIPTION OF SYMBOLS 12 Clamp 13 Cutter receiver 14 Guide rod support 15 Locking piece 16 Tape release body 17 Auxiliary clamp

Claims (2)

[Claims] 1. A loop is formed around a single-sheet paper bundle with a tape sent from a tape supply member for feeding and pulling back the tape, and the loop-shaped tape is formed into a single-sheet paper bundle at the predetermined position. After tightening with a predetermined drawing force, a tape cutting is performed in a banding device for a single-sheet sheet bundle in which a portion where a tape tip and a tape middle portion overlap is welded and the tape is cut off in the vicinity of the welded portion. A mechanism, which is positioned below the single-piece sheet bundle at the banding position, and is moved up and down with respect to the welding assisting body. And a heater that welds the tapes
A cutter provided integrally with the heater side so as to correspond to the supply side of the tape, a cutter having an upper end protruding above the upper end of the heater, and provided so as to move up and down with respect to the lower surface of the welding auxiliary body, near the tape tip And a cutter holder provided integrally with the welding assisting body and a cutter receiver provided integrally with the clamp and located at a position corresponding to the blade portion of the cutter. Tape cutting mechanism. 2. A tape supply member for feeding and unwinding a tape, and a track provided to grip a vicinity of a leading end of the tape sent from the tape supply member and to surround a stop portion of a single-sheet sheet bundle in a transfer path. A loop forming member for forming a loop with a tape by rotating by being guided by a frame, and when forming a loop with the loop forming member, guide the tape so as to be positioned outside the single-sheet paper bundle portion, A banding auxiliary guide configured to release the guided tape from the guide state; and, after tightening the released tape to the single piece of paper bundle, the tape leading end and a tape supply side loop end. And a tape cutting mechanism arranged below the single-sheet bundle to separate the tape on the supply side of the welded portion. A tape cutting mechanism in the strapping device of the above, a welding auxiliary body disposed at the stop portion to be below the single piece sheet bundle, and ascending and descending with respect to this welding auxiliary body,
A heater that welds the tapes that overlap each other when sandwiched between the welding auxiliary body and the heater, and is provided integrally on the heater side so as to correspond to the tape supply side,
A cutter whose upper end protrudes above the upper end of the heater, and is provided so as to move up and down with respect to the lower surface of the welding auxiliary body,
A band for a single-sheet sheet bundle, comprising: a clamp for gripping the vicinity of the leading end of the tape between the welding auxiliary body and a cutter receiver provided integrally with the clamp and positioned at a blade portion of the cutter. Tape cutting mechanism in the hanging device.