JP3960012B2 - Clip caulking mechanism in clip binding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention attaches a plastic clip connected to each other to the neck of a packaging bag containing an article to be packaged, and superimposes a pair of leg pieces formed on the clip to form a conical shape. The present invention relates to a clip caulking mechanism in a clip binding machine that is molded to bind a neck portion of a bag.
[0002]
[Prior art]
In order to close the mouth of the bag containing food such as bread and vegetables, as shown in FIG. 6, an opening 2 that is open toward one end is formed at the center, and the opening of the opening 2 is A pair of leg pieces 3 formed on both sides is formed of a plastic thin piece, and the front ends of both leg pieces 3 are connected together through a rear end edge of the front clip and a connecting section 4 having a small cross-sectional area. A binding machine is known that uses a clip 1 formed as a clip 6 to close the mouth of a bag. In this clip binding machine, the connecting clip 6 loaded in the magazine is supplied to the binding position, the top clip 1 is attached to the narrowed neck of the bag containing the packaged object, and then a pair of leg pieces of the clip 1 is attached. The leg shifting pins formed in 3 are engaged with the leg shifting pins of the leg shifting mechanism so that both leg pieces 3 are pulled inward and overlapped with each other, and the overlapping portion of both leg pieces 3 is formed by a caulking mechanism. They are joined together to bind the bag mouth as shown in FIG.
[0003]
As shown in FIG. 8, the clip after binding is made by pressing a die disposed on one surface of the overlapping portion of both leg pieces 3 of the clip 1 against a caulking pin disposed on the other surface so that a part of both leg pieces 3 is in the die direction. Further, the tip of the protruding portion 7 is crushed by a press pin, and the overlapping portions of both leg pieces 3 are integrally crimped and joined. As shown in FIG. 9, a conventional clip caulking mechanism 40 is formed at a front portion of a clip binding machine and a first frame 43 in which a die 44 facing the caulking pin is formed on a support frame 41 having a caulking pin 42. And the second plate 45 and the third plate 47 each having a press pin 46 are rotatably supported and arranged so as to be slidable in the front-rear direction along the support frame 41. 48, the plates 43 and 45 are sequentially driven by cams 43a and 45a formed on the plates 43 and 45, respectively, and the roller pins 48 are slidably driven with respect to the support frame 41. By a cam mechanism 49a formed on a drive gear 49 arranged at the rear of the clip binding machine Is configured to slide operated along the roller pin 48 to the support frame 41 via a pivot link 51 which is rotated actuated by the slide link 50 and the slide link 50 is caused to ride.
[0004]
[Problems to be solved by the invention]
In the above mechanism, a roller pin 48 is operated via a plurality of link mechanisms 50 and 51 from a drive gear that is rotationally driven by a drive motor via a plurality of gear mechanisms. Since the caulking mechanism 40 is driven by actuating the plate 45, etc., the stroke variation of the caulking mechanism is increased due to the accumulation of dimensional tolerances of the respective parts, and the caulking strength varies. 3 may not be integrated. The power source for driving the caulking mechanism 40 is the same as the driving motor driving the clip supply mechanism, the leg shifting mechanism, the cutter mechanism and the like of the clip binding machine, and the caulking mechanism having a large load by one driving motor. Since a plurality of mechanisms including 40 are driven, there is a problem that the load of the drive motor is easily damaged and the life of the drive motor is short.
[0005]
Furthermore, since the drive motor that drives each of these mechanisms is generally attached to the inside of the binding machine by attachment means such as bolts, it cannot be easily replaced when the drive motor is damaged. There's a problem.
[0006]
The present invention solves the above-mentioned problems of the prior art, enables the caulking mechanism to operate without using a plurality of link mechanisms, reduces the variation in caulking strength, and enables stable binding. A clip caulking mechanism in a clip binding machine that can extend the life by reducing the load of the drive motor by being driven by an independent drive motor is a first problem.
[0007]
A second object of the present invention is to provide a drive motor mounting structure that enables replacement of the drive motor and reduction in the number of assembly steps when the drive motor is damaged in the clip caulking mechanism.
[0008]
[Means for Solving the Problems]
In order to solve the first problem, the present invention supplies the connected clips to the bundling portion by the supply mechanism, separates the leading clip, attaches the leading clip to the bag mouth, and attaches both leg pieces of the clip to the leg. together is polymerized onto the caulking pin each other by asked mechanism, in the clip crimping mechanism in clip binding machine to the overlapping portion of both leg pieces one body coupled to form binding the mouth portion of the bag containing the material to be bound by, A first plate having a die disposed on the top surface of the overlapping portion of the both leg pieces, and a top plate disposed on the top of the first plate so as to be able to enter a hole formed in the die. A second plate and a third plate disposed between the lower surface side of the both leg pieces and the caulking pin are rotatably supported by a frame, and the die of the first plate is caulked pin A die driving cam for driving the two leg pieces so as to form a protruding portion; a die returning cam for returning the first plate; and a protruding portion of the two leg pieces at the tip of the second plate. A press drive cam for crushing the tip is formed on a cam shaft driven by a drive motor attached to the frame via a speed reduction mechanism. By rotating the cam shaft, the die drive cam and the press drive cam The first plate and the second plate are driven, and the third plate is interlocked with the return operation of the first plate by the die return cam to disengage the caulking portions of the both leg pieces from the caulking pins. And
[0009]
In order to solve the second problem, the present invention provides a motor holder to which the drive motor is attached according to claim 1, and is attached to and detached from a bracket portion formed on a side surface of the speed reduction mechanism via a latch mechanism. It is characterized by being freely attached .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the examples shown in the drawings. The clip is as shown in FIG.
[0011]
As shown in FIG. 1, the clip binding machine 1 is provided with a main body housing 13 at the upper end of a post 12 erected on a support leg 11, and the connecting clips 6 are sequentially bound in the main body housing 13. A clip feeding mechanism for feeding the clip toward the head, a clip leg shifting mechanism for forming the clip 1 into a substantially conical shape by operating both the leg pieces 3 of the clip 1 attached to the neck of the bag mouth to be superposed, A mechanism for constituting the clip binding machine 10 such as a clip caulking mechanism for integrally fixing the both leg pieces 3 of the clip 1 and a drive motor for driving these mechanisms is disposed.
[0012]
The clips 6 connected to each other are wound around a reel or the like in a coil shape and loaded into a magazine 14 formed at the rear of the main body housing 13 of the clip binding machine 10, and are bound by a clip supply mechanism in the main body housing 13. The opening 2 (see FIG. 6) is attached to the neck portion of the bag disposed in the guide groove 15 that guides the mouth of the bag to converge and position it to the binding position. As shown in FIG. 8, a part of the overlapping portion of the leg piece 3 is formed as the leg pieces 3 of the clip 1 are formed in a conical shape. It is formed by extrusion from one surface to the other surface, and further, by crushing the tip of the protruding portion 7, the overlapping portion of the leg piece 3 is integrally crimped and joined as shown in FIG. Unity of It takes place.
[0013]
A caulking mechanism 16 for integrally connecting the leg pieces 3 of the clips 1 superposed on each other by the leg shifting mechanism is disposed in front of the binding position in the main body housing 13. As shown in FIGS. 2 and 3, the caulking mechanism 16 includes a frame 17 having a caulking pin 18 disposed on the lower side of the leg piece 3 of the superposed clip 1, and the frame 17 includes the caulking pin 18. The first plate 19 having a die 20 disposed on the top surface of the overlapping portion of the leg piece 3 so as to face the first plate 19, and the leg piece 3 is formed by entering the hole formed in the die 20. A second plate 21 having a press pin 22 that crushes the tip of the protruding portion 7 and a third plate 23 disposed between the lower surface side of the leg piece 3 and the caulking pin 18 are rotatable by a support shaft 24. It is supported. The first plate is a die plate, the second plate is a press plate, and the third plate is a stripper plate.
[0014]
A stripper is formed at the tip of the third plate 23. A cam shaft 28 that supports a cam for rotating the first plate 19 and the second plate 21 around the support shaft 24 is disposed at the rear of the frame 17. It is rotationally driven by a drive motor 30 through a speed reduction mechanism 29 formed on the side surface of 17.
[0015]
The cam formed on the cam shaft 28 engages with the die shaft 19 a formed at the rear portion of the first plate 19 and presses the die 20 formed at the tip of the first plate 19 against the caulking pin 18. A die drive cam 25 that is driven to move, a die return cam 26 that engages with a pin shaft 19b formed on both sides of the rear portion of the first plate 19 to return the first plate 19, and the second return cam 26 A press drive cam 27 that engages with a press shaft 21 a formed at the rear portion of the plate 21 and causes a press pin 22 formed at the tip of the second plate 21 to enter the hole of the die 20 of the first plate 19. It consists of and. Each of the cams 25, 26, and 27 is configured such that after the overlapping leg pieces 3 of the clip 1 are arranged between the caulking mechanisms 16, the first plate 19 is operated and the leg pieces 3 are caulked through the die 20. The leg piece pressed by the crimping pin 18 and projected by the crimping pin 18 is projected into the hole of the die 20, and then the second plate 21 is actuated and the leg projected by the press pin 22 into the hole of the die. The distal end portion of the protruding portion 7 of the piece 3 is pressed and deformed so that both the leg pieces 3 are integrally coupled. The third plate 23 is connected so as to operate in conjunction with the return operation of the first plate 19, and the clip 1 of the clip 1 is detached from the caulking pin 18 by the stripper 23a. The leg piece 3 is moved upward.
[0016]
The camshaft 28 is coupled to rotate integrally with the output shaft of the speed reduction mechanism 29 attached to the side surface of the frame 17, and is driven by an independent drive motor 30 attached to the side surface of the speed reduction mechanism 29. The caulking mechanism 16 is driven. The drive motor 30 is detachably attached to a bracket portion 31 formed on the side surface of the speed reduction mechanism 29 by a latch mechanism 32. As shown in FIGS. 4 and 5, the drive motor 30 is attached to a drive motor holder 33 attached to the bracket portion 31 by screws 34, and a hook 35 formed on the motor holder 33 is attached to the bracket portion 31. By engaging with the latch ring 32 a of the latch mechanism 32, the output shaft 30 a of the drive motor 30 is connected and attached to the input side gear 29 a of the speed reduction mechanism 29. The latch mechanism 32 is formed so as to be exposed on the outer surface of the bracket portion 31 and the motor holder 33, so that the drive motor 30 can be easily replaced.
[0017]
【The invention's effect】
As described above, according to the present invention, the first plate, the second plate, and the third plate are operated by the operation of the die drive cam, the die return cam, and the press drive cam that are rotationally driven by the drive motor via the speed reduction mechanism . Since the plates are operated, each plate can be operated without using a plurality of power transmission mechanisms such as a slide link and a rotary link mechanism as in the past, and variation in caulking stroke due to dimensional tolerance can be reduced. Stable caulking strength can be obtained. In addition, the caulking mechanism is not driven by a driving motor that drives the supply mechanism of the connecting clip or the leg shifting mechanism of both leg pieces as in the prior art, but an independent driving motor for driving the caulking mechanism is used. Therefore, it is possible to reduce the load of the drive motor that drives the supply mechanism and the leg shifting mechanism, and to extend the life of the motor.
[0018]
Furthermore, the drive motor of the caulking mechanism with a large driving load is made independent, and the drive motor of the caulking mechanism is detachably attached to the speed reduction mechanism portion via the latch mechanism, so that the operation can be performed simply by operating the latch mechanism. Since the drive motor dedicated to caulking with a large load can be attached and detached, the drive motor can be easily replaced, and repair and maintenance are facilitated.
[Brief description of the drawings]
1 is a perspective view of a clip binding machine employing a clip stopper mechanism of the present invention. FIG. 2 is a perspective view showing a caulking mechanism of the present invention. FIG. 3 is an exploded perspective view of parts constituting the caulking mechanism of FIG. FIG. 4 is a top view of the state where the drive motor is removed from the speed reduction mechanism. FIG. 5 is a top view of the state where the drive motor is mounted on the speed reduction mechanism. FIG. FIG. 7 is a front view showing a state in which the clips are bound by the clip binding machine of the present invention. FIG. 8 is a vertical side view of the clips in a state in which they are bound. FIG. 9 is a perspective view showing a driving mechanism of a conventional caulking mechanism. Explanation】
DESCRIPTION OF SYMBOLS 1 Clip 6 Connection clip 7 Projection part 10 Clip binding machine 16 Caulking mechanism 17 Frame 18 Caulking pin 19 1st plate 20 Die 21 2nd plate 22 Press pin 23 3rd plate 24 Support shaft 25 Die drive cam 26 Die return cam 27 Press drive cam 28 Cam shaft 29 Deceleration mechanism 30 Drive motor 31 Bracket part 32 Latch mechanism 33 Motor holder 34 Screw 35 Hook

Claims (2)

The connected clip is supplied to the bundling portion by the supply mechanism, the leading clip is cut off, the leading clip is attached to the bag mouth, and both leg pieces of the clip are superposed on the caulking pin by the leg shifting mechanism. the clip caulking mechanism in the clip binding machine to the overlapping portion of the piece one body coupled to form so as to bind the mouth of the bag containing the material to be bound,
A first plate having a die disposed on the top surface of the overlapping portion of the both leg pieces, and a top plate disposed on the top of the first plate so as to be able to enter a hole formed in the die. The second plate and the third plate disposed between the lower surface side of the both leg pieces and the caulking pin are rotatably supported on the frame,
A die driving cam for driving the die of the first plate against the caulking pin to form protrusions on the both leg pieces, a die return cam for returning the first plate, and a second plate A press drive cam that crushes the tips of the protruding portions of the both leg pieces at the tip is formed on a cam shaft driven by a drive motor attached to the frame via a speed reduction mechanism, and by rotating the cam shaft, The first plate and the second plate are driven by the die drive cam and the press drive cam, and the third plate is interlocked with the return operation of the first plate by the die return cam, and the both leg pieces are moved from the caulking pin. A clip caulking mechanism in a clip binding machine characterized in that the caulking portion of the clip binding machine is released. The clip in the clip binding machine according to claim 1, wherein a motor holder to which the drive motor is attached is detachably attached to a bracket portion formed on a side surface of the speed reduction mechanism via a latch mechanism. Caulking mechanism.

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