JP2003221012A - Clip stopper structure of clip bundling machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a coupled clip 6 connected with the rear end edge of the coupled clip 6 from its rolling back into a magazine 14 and slipping out of a supply guide even when a non-return mechanism of a supply structure is out of order. <P>SOLUTION: The stopper structure 36 is installed on the supply guide surface of the connected clip 6 so that it permits the connected clip 6 that has been pulled out from the magazine 14 to be supplied toward the coupled section and moved toward a supply direction of the connected clip 6 on the supply guide surface 19 but avoids the connected clip 6 from joining with one of the connected slips and moving toward the magazine 14. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic clip connected to a neck portion of a packaging bag containing an object to be packaged and formed into a conical shape. The present invention relates to a clip stopper mechanism in a clip bundling machine that binds a neck portion of a bag. [0002] In order to close the mouth of a bag containing food such as bread and vegetables, as shown in FIG. 2, an opening 2 which is open toward one end is formed in the center. A clip 1 made of a thin piece of plastic having a pair of leg pieces 3 formed on both sides of an opening of an opening 2 is used, and the opening 2 of the clip 1 is connected to the mouth of a bag containing an article to be packaged. Is attached to the converged neck portion, and a pair of leg pieces 3 extending on both sides along the opening direction of the clip 1 are overlapped so as to intersect with each other. There is already known a clip binding machine in which a conical shape is formed, and the overlapping portion of both leg pieces 3 is crimped and fixed by welding or engagement to bind the neck portion of the packaging bag containing the contents. ing. The clip 1 is formed as a connecting clip 6 by connecting the front ends of the two leg pieces 3 integrally with the rear end edge of the front clip via a connecting portion 4 having a small sectional area. The connecting clip 6 is wound in a coil shape and loaded into a clip binding machine. As for the coil-shaped connecting clip 6 loaded in the magazine of the clip binding machine, the leading clip 1a is pulled out of the magazine and sequentially supplied to the binding unit by the clip supply mechanism, and the leading clip 1a and the second clip
The first clip 1a is cut off from the connecting portion 4 between the clips 1b, and the leading clip 1a is attached to the squeezed neck of the bag containing the article to be packaged. Then, a through hole 5 formed in a pair of leg pieces 3 protruding forward of each clip 1 is formed.
The bag pins are tied together by engaging the leg pulling pins of the leg pulling mechanism to draw the two leg pieces 3 inward to each other and polymerize them. The connecting clips 6 are sequentially supplied to the binding portion in a state in which the leg pulling pins of the leg pulling mechanism are engaged with the through holes 5 of the leading clip 1a. [0004] A connecting clip 6 wound in a coil shape is wound around a reel or the like and loaded in a magazine, and a clip 1a at the tip of the connected clip is placed in a magazine. And is supplied to the binding unit by the supply mechanism. The magazine is provided with a certain resistance to the rotation of the reels, etc. so that the leading part of the wound clip is not pulled out from the magazine excessively when the leading part of the wound clip is supplied forward by the supply mechanism. A tension acts to pull back the clip in the magazine direction when the clip is supplied forward by the supply mechanism, and when the leading clip 1a is cut, the subsequent connecting clip 6 causes the tension of the wound portion in the magazine to be reduced. It is pulled in the opposite direction by the action. As shown in FIG. 9 (a), the supply portion is provided with a check which protrudes from the supply guide surface of the connecting clip 6 in order to prevent the leading clip 1a from returning too much when returning to the initial position. A check mechanism provided with a pawl 7 is formed. When the leading clip is located at the binding position, the plurality of clips 1 have moved forward through the check pawls 7, and when the feed unit is retracted, the check pawls 7 are not the lead clip 1 a but 2. The first and subsequent clips 1 are hooked. In order to prevent this, as shown in FIG. 9 (b), the check pawl 7 is moved forward so as not to engage with the connecting clip 6.
It has been pushed down by. Further, after the leading clip 1a is cut, both leg pieces 3 of the clip are cut.
As shown in FIG. 9 (c), when clipping is performed, the clip cutting pin 8 is lowered and detached from the second clip. And the connecting clip 6 may be pulled back in the magazine direction and fall out of the supply guide portion, so that the connecting clip 6 cannot be continuously supplied.
There has been a problem that binding failure occurs. The present invention solves the above-mentioned problems of the prior art, and prevents the connected clip from being rewound into the magazine and coming out of the supply guide by engaging with the trailing edge of the connected clip. An object of the present invention is to provide a clip stopper mechanism of a clip tying machine. [0007] In order to solve the above-mentioned problems, a clip stopper mechanism in a clip bundling machine of the present invention winds clips integrally connected to each other, loads the clips into a magazine, and pulls out the magazine. The supplied clip is supplied toward the binding portion on the supply guide surface, the first clip is separated from the subsequent clip and attached to the neck of the material to be bound, and the clip is formed in a conical shape so that both legs of the clip overlap. In a binding machine in which a molded portion is fixed and a neck portion of a bag is bound by binding, the connected clip is allowed to move in the supply direction, and is engaged with one of the connecting clips to form a magazine. A stopper member for preventing movement in the direction is formed on the supply guide surface of the connecting clip. An embodiment of the present invention will be described below with reference to an embodiment shown in the drawings. Here, the clip refers to the clip shown in FIG. As shown in FIG. 1, the clip bundling machine 10 of the present invention has a main body housing 13 provided at an upper end of a post 12 erected on a support leg 11, and a connecting clip 6 in which the connecting clips 6 are sequentially bound. Supply mechanism for a clip to be supplied toward the mouth, a clip pulling mechanism for forming the clip 1 into a substantially conical shape by operating both legs of the clip 1 attached to the neck of the bag mouth, and a superimposed clip A main mechanism constituting the clip bundling machine 10 such as a caulking mechanism for fixing the two leg pieces 3 and a motor for driving each of these mechanisms is arranged. The clips 6 connected to each other are wound into a coil or the like on a reel or the like, so that the main body housing 13 shown in FIG.
It is loaded into a magazine 14 formed at the rear part of the bag, supplied to the binding portion by a clip supply mechanism in the main body housing 13, and arranged in a guiding groove 15 for converging and guiding the mouth portion of the bag to a binding position. The clip 1 is attached to the neck of the bag, and the leg 1 is drawn into a conical shape by the leg pulling mechanism so that the two legs 3 of the clip 1 are pulled together and the two legs 3 overlap each other. Binding is completed by a mechanism or a welding mechanism. As shown in FIG. 3, in a main body housing 13, a supply mechanism 16 for sequentially supplying the connecting clips 6 toward the binding portion, and the legs 3 of the leading clip 1a are attracted to each other so that the two legs 3 are connected to each other. A leg pulling mechanism 25 for overlapping and a clip cutting mechanism 30 for cutting the leading clip from the connected state in cooperation with the leg pulling mechanism 25 are formed. Further, a carrier 17 that supports and drives each of these mechanisms is disposed in the main body housing 13. The carrier 17 is slidably disposed in the body housing 13 along the direction in which the clip is supplied.
On the lower surface side of the carrier 17, an operating gear 18 having a driving pin 18a disposed on a circumference is rotatably disposed by a driving motor, and the driving pin 18a is provided in a cam groove 17a formed in a rear portion of the carrier 17. Loose fit, working gear 1
The carrier 17 is reciprocated along the supply direction of the connecting clip 6 by rotating the carrier 8. On the upper surface side of the carrier 17, a lower case 2 having a supply guide surface 19 for the connecting clip 6 is formed.
0 is disposed, and a supply unit 21 is disposed on the upper surface side of the lower case 20. The lower case 20
And the supply unit 21 are vertically integrated with each other, and the supply guide surface 1 formed on the upper surface of the lower case 20.
A supply guide passage for the connection clip 6 is formed between the supply unit 9 and the supply unit 21. The lower case 20 and the supply unit 21 are integrally connected, and the connection clip 6 is guided forward along a supply guide surface 19 formed on the upper surface of the lower case 20. Further, a long hole 22 is formed in the lower case 20 along a direction orthogonal to the supply direction of the clip, and the long hole 22 is provided at the other end of a link 23 whose one end is pivotally supported on the carrier 17. The formed link pin 24 is loosely fitted, and the lower case 20 and the supply unit 21 are connected to the carrier 17 via the link pin 24.
It is designed to operate in conjunction with the sliding operation of. On the upper surface of the supply unit 21, there is provided a leg pulling mechanism 25 for pulling the leg pieces 3 of the leading clip 1a together and superimposing the two leg pieces 3 on top of each other. The leg pulling mechanism 25 is provided with a pair of leg pulling arms 2 each having a leg pulling pin 26 for operating the leg 3 by engaging with the opening 5 formed in the leg 3 of the leading clip 1a.
7 and an operating member 29 for operating the leg pulling arm 27 via a link 28 linked to the end of the leg pulling arm 27. A pair of leg pulling arms 27
Are pivotally supported together at the inner end on the upper surface of the supply unit 21 and the actuating member 29 is
Then, the leg pulling arm 27 rotates the leading leg pulling pin 26 via the link 28 in a direction crossing the supply direction of the clip. At the front of the carrier 17, the second clip 1b of the connected clip 6 is engaged to stop the connection clip 6 from moving in the supply direction. A clip cutting mechanism 30 for disengaging the connected state of the clip from the leading clip 1a that is engaged and moved forward is formed. The clip cutting mechanism 30 includes an operating piece 32 having a clip tie pin 31 at a front end portion for engaging with the opening 5 of the second clip 1b disposed on the upper surface of the lower case 20. A piece 32 is rotatably supported by a bracket 33 formed at the front end of the carrier 17. At the rear end of the actuating piece 32, a projection 34 protruding downward is provided. The projection 34 is a cam formed on a chassis fixedly arranged on the lower surface side of the carrier 17. By contacting the portion 35, the operating piece 32 is rotated about the pivot point so that the clip tie pin 31 is disengaged from the through hole 5 of the second clip 1b. As shown in FIG. 6, in a state where the clip tie pin 31 is engaged with the through hole 5 of the second clip 1b and the movement is stopped, the first clip 1
The leading clip 1a and the second clip 1b or less are connected to each other by moving the leg pulling arm 27 engaged with
The connection between them is broken. As shown in FIGS. 4 to 6, the upper surface of the lower case 20 is engaged with the connecting clip 6 supplied along the supply guide surface 19 to allow the clip to move in the supply direction and to be moved in the reverse direction. A clip stopper mechanism 36 for preventing movement of the clip is formed. Stopper mechanism 36
The supply unit 2 as shown in detail in FIGS.
A stopper arm 39 rotatably supported by a support shaft 38 fitted on a flange portion 37 formed on the upper surface of the first member 1, a stopper member 40 formed at one end of the stopper arm 39, and the stopper member 40. The torsion coil spring 41 is configured to press and urge the supply guide surface 19 formed on the upper surface of the coil 20. The stopper member 40 has a locking portion 42 formed at the lower end facing the supply direction and an inclined surface 43 facing the rear side in the supply direction.
When the connecting clip 6 moves in the supply direction, the front edge of each clip engages with the inclined surface 43 and the stopper arm 39
Is rotated against the torsion coil spring 41, and the locking portion 42 moves away from the supply guide surface 19 to allow the supply of the connection clip 6. When the connecting clip 6 moves in the direction opposite to the supply direction, the rear end edge of the clip engages with the locking portion 42 of the stopper member 40 and the connecting clip 6
Is prevented from moving in the magazine 14 direction. When the lower case 20 and the supply unit 21 are moved forward together with the carrier 17, the connecting clips 6 arranged in the supply guide passage formed between the lower case 20 and the supply unit 21 are supplied forward. At this time, the inclined surface 43 of the stopper member 40 does not engage with the front edge of the clip 1 and the stopper member 40 pivots upward to prevent the supply of the connecting clip 6 from being obstructed. At the final stage of the supply operation of the connecting clip 6, the second clip is locked by the clip cutting mechanism 30 and the leg pulling mechanism 2
5 is the leading clip 1a held by the leg pulling arm 27 of FIG.
Is further advanced, the first clip 1a and the second clip
The connection is disconnected between the lower connecting clips 6. The connected clip 6 below the second clip is the magazine 14
Magazine 1 by the tension of the winding part contained in
Although it is pulled in four directions and tries to move in the opposite direction along the supply guide surface 19, the locking portions 42 of the stopper member 40
Engages the trailing edge of the clip to prevent movement. Therefore, the binding operation can be performed continuously without the connecting clip 6 coming out of the supply passage. As described above, according to the present invention, the stopper member pressed against the supply guide surface is formed by pressing against the supply guide surface of the clip. Even when the clip connected by the tension of the clip wound in the magazine when the clip is cut is pulled in the magazine direction, the stopper member engages with the trailing edge of the connection clip and the connection clip is supplied by the supply guide. The clip can be prevented from slipping out of the passage, and the clip can be stably supplied without interrupting the binding operation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a clip bundling machine employing a clip stopper mechanism of the present invention. FIG. 2 is a plan view of a connected clip used in the clip bundling machine of the present invention. FIG. 4 is an exploded perspective view of members constituting a main mechanism of the clip tying machine of FIG. 1; FIG. 4 is a longitudinal sectional side view of a main mechanism of the clip tying machine of FIG. FIG. 6 is a plan view of the same state as FIG. 5 with the leading clip cut off. FIG. 7 is a detailed vertical sectional side view of the clip stopper mechanism. FIG. FIG. 9 is an explanatory view of a conventional clip supply mechanism;
(A) is a state diagram in which the check nail is engaged with the leading connecting clip, (b) is a state diagram in which the leading clip of the connecting clip is cut, and (c) is a leg piece of the leading clip that is overlapped. State diagram [Description of reference numerals] 6 Connecting clip 10 Clip bundling machine 14 Magazine 16 Supply mechanism 17 Carrier 18 Drive gear 19 Supply guide surface 20 Lower case 21 Supply unit 25 Leg shift mechanism 26 Leg shift pin 27 Leg shift arm 30 Clip cutting mechanism 31 Clip tie pin 36 Stopper mechanism 37 Flange part 38 Support shaft 39 Stopper arm 40 Stopper member 41 Torsion coil spring 42 Locking part 43 Inclined surface

Claims (1)

Claims: 1. A clip connected integrally with one another is wound and loaded into a magazine, and a clip drawn from the magazine is supplied to a binding portion on a supply guide surface, and a leading clip is provided. Is separated from the subsequent clip and attached to the neck of the material to be tied, and formed into a conical shape so that both legs of the clip are superimposed, and the overlapping portion is fixed to bind the neck of the bag. In the machine, a stopper member is provided on the supply guide surface of the connecting clip to allow the connected clip to move in the supply direction and to engage with one of the connecting clips to prevent the connecting clip from moving in the magazine direction. A clip stopper mechanism in a clip tying machine characterized by being formed.