JP2000255524A - Anti-clogging mechanism of binding clip in bag binding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a clip from being jammed in a caulking machine. SOLUTION: A bag binding machine is comprised of a guiding passage 3 for guiding an opening part of a bag; a feeder device for feeding the opening part of the bag guided to a caulking section at an end part of the guiding passage 3 to hold it with leg pieces of a gate-type binding clip and crossing the leg pieces; and a caulking device 6 for press fitting the extremity ends of the leg pieces of the overlapped clips. The caulking device 6 is formed with a partition wall 27 engaged with the leg pieces of the clips at a slight forward position than a position of the extremity end of each of the leg pieces of the clips normally fed from the feeding device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag tying device for tying the mouth of a bag containing goods with a clip to prevent internal parts from being damaged by an overload caused by the clogging of the clip. It relates to a prevention mechanism.

[0002]

2. Description of the Related Art A bag tying machine is known which ties a mouth of a bag made of polyethylene or the like containing a product with a plastic clip to close the mouth of the bag. For example, as shown in Japanese Patent Application Laid-Open No. H10-167232, when the mouth of the bag is guided to the end of the guide passage, the feeding device of the feeding unit 2 operates to open the mouth of the bag. The clip is fed so as to be sandwiched between the legs of the clip, and the legs are stacked one on top of the other, and the tip of the leg of the fed clip is swaged by the swaging device of the swaging portion 3 to be bound. The device has a fixed pin 8 as shown in FIGS.
After the die plate 12 (oscillating member) having the die 11 is swingably disposed above the base member 9 having the same, the clip a is fed between the fixing pin 8 and the die 11 thereon. The die plate 12 is operated downward to caulk the leg pieces 6 of the stacked clips a.

[0003]

However, there is no problem during normal operation. However, if the mouth of the bag is pulled out of the guide passage before the clip is swaged by the swaging device, the swage of the clip will occur. A defect occurs and remains in the caulking device. If the bundling operation is further performed continuously in this state, the clips enter between the base member 9 of the caulking device and the die plate 12 one after another and become clogged. When the die plate 12 swings, a large load is applied to the base where the clip is clogged by the effect of the lever. Therefore, if the bundling operation is continued without being noticed, the component that drives the caulking device is damaged due to the overload. Sometimes.

Further, in order to pull out and remove the clogged clip, it is necessary to use pliers or the like, and the discharging operation is troublesome.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a mechanism for preventing a clip from being clogged in a bag binding machine capable of preventing the clip from being clogged in a caulking device.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a mechanism for preventing clogging of a clip in a bag binding machine according to the present invention comprises a guide passage for guiding an opening of a bag and a caulking portion at an end of the guide passage. A feeding device that feeds the mouth of the bag guided by the legs so as to be sandwiched by the legs of the gate-shaped bundling clip and crosses the legs, and a caulking device that caulks the tips of the legs of the stacked clips. In the bag binding machine provided with the above, the caulking device is formed with a partition wall that engages with the leg of the clip, at a position slightly forward of the tip of the leg of the clip normally fed from the feeder. It is characterized by the following.

In this case, below the caulking portion,
A flap provided with an engagement groove capable of guiding the mouth of the bag,
It is preferable that the partition is formed so as to engage with the clip and rotate downward when the mouth portion of the bag in the bound state is pulled down, and the partition is formed on the flap.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 designates an outline of a bag binding machine. The binding machine main body 1 is formed in a horizontal plate shape, and a mouth portion of a bag a extends from one side of a front portion to a central front portion. A guide passage 3 for guiding the guide 2 is formed, and a caulking portion 4 is provided at the tip thereof. A feeding device 5 is provided at the rear of the caulking portion 4.
However, a caulking device 6 is arranged at the front. Further, a roll 8 on which a clip tape 7 to which a number of bundling clips b are connected is mounted on the rear portion of the bundling machine main body 1.

As shown in FIG. 2, the clip b is formed in a gate shape by a plastic sheet, has leg pieces 9 on both sides, and a pin engaging hole 10 is formed through the center of the leg piece 9. I have. The entire clip tape 7 is formed in a tape shape in a state where both shoulders of each clip b and the tip of the leg piece 9 are connected to each other.

The feeding device 5 is provided so as to be moved back and forth by a driving device (not shown).
After a pin (not shown) is engaged with the engaging hole 10 of the leg piece 9 of the first clip b of the first clip b, and only one clip is sent to the caulking portion 4, the pins on both sides are brought closer and the first clip b is The leg pieces 9 are crossed, and the detailed mechanism is as shown in FIGS. 5 and 6 of Japanese Patent Application Laid-Open No. 10-203509 filed by the applicant of the present invention, and is omitted here.

As shown in detail in FIGS. 3 and 4, the caulking device 6 is provided inside a holder 11 and provided with a fixing pin 14 at a tip of a base member 13 fixed on a lower substrate 12. , A fixing pin 14 above the base member 13.
A die plate 16 having a die 15 for receiving
The pressing plate 19 provided with the pressing pin 18 which engages with the fifth plate 5 is superimposed, so that the intermediate portion of the die plate 16 and the rear end of the pressing plate 19 are supported on the support shafts 20 provided on both side walls of the holder 11.
An actuating member 21 which is rotatably supported and movable back and forth on these members is provided, and when a roller 22 of the actuating member 21 moves along a guide groove 23 formed in a side wall of the holder 11. When the die plate 16 and the pressing plate 19 are engaged with the projections 24 and 25 formed at both ends of the both sides of the pressing plate 19 and move to the caulking portion 4 side, the die plate 1
When the plate 6 and the pressing plate 19 are pushed down and moved to the opposite side, the die plate 16 and the pressing plate 19 are moved upward.

Before bundling, the roller 22 is located at the end on the side remote from the caulking portion 4 and has the die plate 16 and the pressing plate 1.
9 is moving up. When the user introduces the caulking portion 4 from the guide passage 3 by holding the upper and lower portions of the mouth 2 of the bag a, the switch is turned on, and the feeding device 5 is operated to supply the clip b at the tip of the clip tape 7 to the caulking portion 4. I do. When the mouth 2 of the bag a is sandwiched between the legs 9 of the clip b by the feeding device 5 and the legs 9 are crossed and overlapped (at this time, the mouth 2 of the bag a 9, the fixing pin 14 is located below the intersection), and the driving member moves the operating member 21 in the direction of the arrow in FIG. 4 to slide the roller 22 along the guide groove 23. As shown in FIG. 5, the roller 22 engages and presses the upper surface of the pressing plate 19, so that the die plate 16 and the pressing plate 19 rotate downward around the support shaft and are disposed on the fixing pin 14. Press the leg piece 9 of the clip b. Thereby, the clip b
Is pressed into the die 15 of the die plate 16 together with the fixing pins 14, and the tip of the clip b is
The upper and lower leg pieces 9 are strongly caulked and joined together, and the binding is completed. The swaged portion 26 of the clip b in this state is shown in FIG.
As shown in FIG. Further, after the operating member 21 moves to the opposite side and the die plate 16 and the pressing plate 19 are separated from the fixing pins 14, the operator pulls out the mouth 2 of the bag a from below the guide passage 3, thereby caulking. Device 6
The clip b is released from the, and the next binding is prepared.

Next, as shown in FIG. 3, FIG. 4 and FIG. 6, the caulking device 6 is slightly forward of the distal end position of the leg 9 of the clip b normally fed from the feeding device 5. In the position, the partition wall 2 engaging with the leg piece 9 of the clip b
7 are formed.

Therefore, in the normal case, the clip b is sent to the caulking section 4 and the caulking device 6
Is actuated to perform binding, and thereafter the opening 2 of the bag a is pulled out from the guide passage 3 to complete the work. However, for example, if the mouth portion 2 of the bag a is pulled down before the caulking operation by the caulking device 6 is completed, the bag 2 is hit without hitting, and the clip b caulked by the caulking device 6 remains on the fixing pin 14. When the next bundling operation is performed without noticing this, the leg piece 9 of the clip b sent out by the feeding device as shown in FIG.
Since it hits 7, it is not pushed. Therefore, it is possible to effectively prevent the clip b from being clogged in the caulking device 6, and to prevent an accident that the component is damaged or deformed. Further, in such a state, even if the subsequent clip b is swaged, a binding failure occurs, so that the operator can easily be alerted to the occurrence of the clogging.

The partition 27 is not limited to the example fixed to the caulking device 6. For example, as shown in FIG.
It may be 7. That is, the flap 28 is disposed below the caulking portion 4 in the same drawing so as to be rotatable downward about the shaft 29. At the tip of the flap 28, an engagement groove 29 capable of guiding the mouth 2 of the bag a is formed. The flap 28 engages with the clip b when the mouth 2 of the bag a is pulled out after the binding is completed, and pivots downward. When the pivot is rotated, a limit switch, a photo sensor, and the like (not shown) are operated. To detect that the binding operation has been completed. The clogging prevention partition 27 may be formed upright at the base of the flap 28.
According to this, the clip b is prevented from clogging the caulking portion 4 and the remaining clip b is
Is rotated downward, the partition 27 also falls down, and the clip b remaining with the partition 27 is pushed back, so that the clip b can be forcibly discharged to the outside.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a bag binding machine according to the present invention.

FIG. 2 is a perspective view showing a binding clip and a connection state thereof;

FIG. 3 is a perspective view showing a caulking device and a mechanism for preventing clogging of a clip.

FIG. 4 is a central sectional view of a clip clogging prevention mechanism.

FIG. 5 is an explanatory view of an operation mode of the caulking device.

FIG. 6 is a perspective view of the clogging prevention mechanism.

FIG. 7 is a perspective view of an example of another clip preventing mechanism.

FIG. 8 is a perspective view of a mouth portion of a tied bag.

[Explanation of symbols]

 a bag b clip 2 mouth part 4 caulking part 5 feeding device 6 caulking device 9 leg piece 27 partition wall 28 flap

Continuing on the front page (72) Inventor Masami Haruta 6-6 Nihonbashi Hakozakicho, Chuo-ku, Tokyo Max. Co., Ltd. (72) Inventor Susumu Hayashi 6-6 Nihonbashi Hakozakicho, Chuo-ku, Tokyo Max Max (72) Inventor Yoshihiro Maba 6-6, Hakozakicho, Nihonbashi, Chuo-ku, Tokyo F-term in MAX Corporation (reference) 3E057 AA01 AB05 AD05 3E094 AA12 CA36 DA05 EA20 FA30 HA20

Claims (2)

[Claims] 1. A guide passage for guiding a mouth portion of a bag, and a mouth portion of the bag guided by a caulking portion at an end of the guide passage is fed so as to be sandwiched between legs of a gate-shaped binding clip, and In a bag binding machine having a feeding device for crossing leg pieces and a caulking device for caulking the tip of the leg piece of the stacked clips, the caulking device includes a leg of the clip normally fed from the feeding device. A clogging prevention mechanism for a tying clip in a bag tying machine, wherein a partition wall is formed at a position slightly forward of a tip end of the piece to engage with a leg of the clip. 2. The bag according to claim 1, wherein a flap provided with an engagement groove capable of guiding the mouth of the bag below the caulking portion is connected to a clip when the mouth of the bag in a bound state is pulled out downward. A mechanism for preventing clogging of a binding clip in a bag binding machine, wherein the binding clip is provided so as to rotate downwardly and the flap is formed with the partition wall.