JP2003221014A - Bag mouth converging mechanism of bag mouth bundling machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag mouth converging mechanism of a bag mouth bundling machine that secures sure convergence of a mouth portion of a bag to be bundled at a bundling position before starting the bundling machine, and prevents the bag from being cut down in an insufficient bundled state due to an eventual start of the bundling machine. <P>SOLUTION: The bundling machine is composed of an induction groove 6 for inducting the bag mouth portion, a switch lever 11 to be rotated along the induction groove 6 and a guide section member 14 that depresses the bag mouth portion in the induction groove 6 toward a deeper inside of the induction groove 6, where the guide section member 14 is rotationally maintained at one end by a branch axis 20 being apart from the rotational branch axis 12 of the above switch lever 11 and a working piece 13 to be integrally rotated with the switch lever 11 is equipped for permitting the above guide section member 14 to be a center of rotation around the above branch axis 20 through the working piece 13. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching a clip formed of a thin piece of plastic to the mouth of a packaging bag and binding the mouth of the bag. More particularly, the present invention relates to a bag-mouth convergence mechanism in a bag-mouth tying machine that converges a mouth portion of a bag to which a clip is attached at a binding position. 2. Description of the Related Art In order to close the mouth of a bag containing food such as bread or vegetables, etc., an opening is opened toward one end so as to accommodate the mouth of a bundled bag. Using a clip formed of a thin piece of plastic with a pair of leg pieces formed on both sides of the opening, the opening of the clip is attached to the bound mouth of the packaging bag containing the contents. A binding machine for a bag mouth which binds a mouth portion of a packaging bag is already known. [0003] In the above-mentioned bag opening bundling machine, a guide groove for positioning a packaging bag is formed at a binding position where a clip is supplied, and a switch lever operated by a bag inserted into the guide groove is formed. Are rotatably arranged along the guide groove. When the switch lever is rotated by the bag to be inserted and the bag is inserted deep into the guide groove, the binding machine is started. A guide member is rotated in conjunction with the rotation of the switch lever, and a bag opening convergence mechanism is provided for converging and positioning the bag in the guide groove to the clip supply position by the guide member. [0006] As shown in FIG.
The switch lever 31 arranged on the upper surface side and the guide member 32 arranged on the lower surface side are integrally connected by two shafts 33 and 34, with one rotation support shaft 33 as the center. Both are configured to rotate integrally. Before the bag is inserted into the guide groove 35, the switch lever 31 is disposed at the entrance of the guide groove 35 so as to be operated by the bag inserted into the guide groove 35,
The guide member 32 is disposed outside the guide groove 35 so as not to obstruct the bag when the guide member 32 is inserted into the guide groove 35, and both are integrally connected in a relationship opened at a predetermined angle. As described above, in the conventional convergence mechanism 30 at the bag mouth, the switch lever 31 and the guide member 32 operate integrally while maintaining a predetermined angle. Therefore, the tying device is actuated by the switch lever 31 while the convergence of the bag by the guide member 32 is insufficient, and the tip of the clip or the supply mechanism abuts on the mouth of the bag that has been spread, and the bag is closed. The problem of disconnection has occurred. Improvement can be achieved by setting the angle between the switch lever 31 and the guide member 32 small, but the guide member 32 becomes an obstacle when the mouth of the bag is inserted into the guide groove 35, and the work becomes difficult. In addition, problems such as difficulty in setting and adjusting the angle occur. The present invention
A bag opening that can reliably converge the mouth of a bag to be bound before starting the binding machine at the binding position, and prevent the binding machine from starting and cutting the bag in an insufficiently converged state. It is an object to provide a bag mouth convergence mechanism of a binding machine. SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a plastic material having an opening opened toward one end and a pair of legs formed on both sides of the opening. In order to guide the mouth of the bag to the binding position, in a bag mouth binding machine in which a clip formed of a thin piece is attached to the mouth of the bag arranged at the binding portion to bind the mouth of the bag. Guide groove, a switch member that is rotated by the mouth of the bag inserted along the guide groove, and a guide member that presses the mouth of the bag in the guide groove toward the back of the guide groove. The guide member is rotatably supported at one end by a support shaft separated from the rotation support shaft of the switch member, and an operation piece that is rotated integrally with the switch member is provided to provide the operation member and the guide. By linking the members, The guide member is configured to rotate about the support shaft via a moving piece. An embodiment of the present invention will be described below with reference to an embodiment shown in the drawings. FIG. 1 is a perspective view showing the entirety of the bag mouth binding machine 1 with the upper cover of the bag mouth binding machine in which the bag mouth convergence mechanism of the present invention is implemented, opened. Bag tying machine 1
The main body housing 4 is provided at the upper end of the post 3 erected on the support leg 2, and a clip supply mechanism for sequentially supplying clips to the binding portion is provided in the main body housing 4.
A clip shifting mechanism for operating the two leg pieces of the clip attached to the mouth of the bag mouth so as to overlap them to form the clip into a substantially conical shape, a clip fastening mechanism for fastening the two leg pieces of the overlapped clip, and A main mechanism that constitutes the bag mouth binding machine 1 such as a motor that drives each of these mechanisms is arranged. The clips connected to each other are wound into a coil, loaded into a magazine 5 formed at the rear of the main body housing 4 and supplied to a binding portion by a clip supply mechanism in the main body housing 4 to form a bag. After being attached to the mouth of the bag arranged in the guiding groove 6 for converging and guiding the mouth and positioning it to the binding part, the two legs of the clip are drawn by the leg pulling mechanism and formed so as to overlap each other, The two legs of the superimposed clip are joined by a caulking mechanism or a welding mechanism to complete the binding. A guide groove 6 for guiding the mouth of the bag containing the contents to the binding position is opened widely in the lateral direction of the main body housing 4 and the substrates 7a and 7b housed in the main body housing 4. The guide groove 6 is formed so as to be gradually narrowed toward the inner portion thereof, and the innermost portion is configured to guide the mouth portion of the bag to the binding position. A bag mouth convergence mechanism 10 for moving the mouth portion of the bag disposed in the inside of the guide groove 6 toward the innermost portion of the guide groove 6 to converge the bag is formed. FIG. 2 shows the main components of the bag mouth convergence mechanism of the present invention. The bag mouth convergence mechanism 10 is integrally connected to the switch lever (switch member) 11 rotatably supported by a rotation support shaft 12 on the upper surface side of the substrate 7a via the switch lever 11 and the rotation support shaft 12. Working piece 1
3, and a guide member (poly guide) 14 rotatably supported on the back side of the substrate 7b and linked to the operating piece 13. The switch lever 11 is fixed to an upper end of a rotation support shaft 12 rotatably supported by the substrate 7a, and is rotatable about the rotation support shaft 12. Further, the switch lever 11 is formed with a lever piece 15 extending in the radial direction from the rotation support shaft 12, and the lever piece 15 is disposed so as to cross the guide groove 6. An operating piece 13 is integrally connected to a lower end of the rotary support shaft 12 penetrating through the substrate 7a.
3 is rotated about the rotation shaft 12 integrally with the switch lever 11. A detecting section 16 is provided at the tip of the operating piece 13.
Is formed, and a sensor 17 provided on the upper surface of the substrate 7b detects the detection unit 16 to activate the binding machine. Further, a substantially L-shaped through hole 18 is formed in the operation piece 13. The guide member 14 has a guide piece 19 formed at one end for pressing the mouth of the bag disposed in the guide groove 6 toward the back of the guide groove 6, and is separated from the guide piece 19. It is rotatably supported by a support shaft 20 on the back side of the substrate 7b at the end. The support shaft 2 of the guide member 14
An operating rod 21 erected in the direction of the operating piece 13 is provided on an upper surface remote from the zero. The operating rod 21 penetrates through an arc-shaped guide hole 22 formed in the substrate 7b and is loosely fitted into a through hole 18 formed in the operating piece 13, and the operating rod 2
The seat plate 23 installed at the upper end of the first member 1 prevents the seat plate 23 from coming out of the through hole 18. The guide member 14 is configured as described above, and the operation piece 13 via the switch lever 11 is formed.
Is rotated about the support shaft 20 through the through-hole 18 formed in the operation piece 13 and the operation rod 21 on the guide member 14. As described above, the rotation support shaft 12 of the switch lever 11 and the support shaft 20 of the guide member 14 are made different from each other, and the guide member 14 is rotated via the operating rod 21 so that the rotation of the switch lever 11 is prevented. As shown in FIG. 3, the guide member 14 and the switch lever 11 which have been widely opened before the operation are changed from the rotation speed of the guide member 14 to the switch lever 11 as shown in FIG.
Can be operated in conjunction with each other such that the angle between them becomes narrower, and the mouth of the bag is surely converged before the binding machine mechanism is driven by the rotation of the switch lever 11 It becomes possible. The operation of the above embodiment will be described below with reference to FIG. As shown in FIG. 5A, in the initial stage when the mouth of the bag is inserted into the guide groove 6, the lever piece 15 of the switch lever 11 is disposed on the path of the guide groove 6, and the guide piece of the guide member 14 is provided. Reference numeral 19 is arranged at a position apart from the end of the guide groove which is largely open. FIG.
As shown in (b), when the lever piece 15 of the switch lever 11 is operated by the mouth of the bag inserted along the guide groove 6, the switch lever 11 is rotated about the rotation support shaft 12, and the switch lever is rotated. The operating member 13 integrally connected to the guide member 11 via the rotary support shaft 12 is rotated, and the guide member 1 is rotated via the operating rod 21 loosely fitted in the through hole 18.
4 is rotated about the support shaft 20, and the guide piece 19 of the guide member 14 moves behind the mouth of the bag. As shown in FIG. 5 (c), when the switch lever 11 is further rotated by the mouth of the bag, the guide member 14 is further rotated at a speed faster than the rotation of the switch lever, and the guide member 14 is rotated. It operates so as to push the mouth of the bag into the depth of the guide groove 6 while reducing the opening of the angle.
As shown in FIG. 5D, when the mouth of the bag is guided to the depth of the guide groove 6 to a position immediately before the binding position, the guide piece 19 of the guide member 14 connects the mouth of the bag with the switch lever 11. The mouth of the bag converges to the binding position in the vicinity of the switch lever 11 so as to be sandwiched therebetween. At this time, the switch lever 11
The detection unit 16 of the operating piece 13 that is rotated integrally with the detection unit 16 moves to the position of the sensor 17 and is detected by the sensor 17.
Is detected and the binding machine is driven. Thereafter, FIG.
As shown in (1), the binding mechanism is driven and a clip is attached to the mouth of the bag converged at the back of the guide groove 6 to perform binding. As described above, according to the convergence mechanism of the bag mouth portion of the present invention, the rotation support shaft of the switch lever and the support shaft of the guide member are formed to be different from each other, and the operation lever is interposed. By rotating the guide member, the guide member can be rotated at a high speed with respect to the rotation of the switch lever, and the opening of the bag is securely guided before the binding machine mechanism is driven by the rotation of the switch lever. Within the range. Therefore, it is possible to prevent an accident in which a bag whose convergence is insufficient is cut by a clip or a clip supply mechanism.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state where a cover of a bag mouth binding machine according to an embodiment of the present invention is removed. FIG. 2 shows a structure constituting a bag mouth converging mechanism of the present invention. FIG. 3 is a perspective view of the bag opening convergence mechanism of the present invention before operation. FIG. 4 is a perspective view of the bag opening convergence mechanism of the present invention after operation. FIG. 5 is an operating state of the bag opening convergence mechanism of the present invention. It is a top view which shows the initial state which inserted the bag in the guide groove,
(B) is a state in which the switch lever is actuated by the bag,
(C) is a state in which the bags are converged by the guide member,
(D) shows a state in which the bag is further converged by the switch lever and the guide member, and (e) shows a state in which a clip is attached to the mouth of the bag converged at the binding position. 1 is a perspective view showing a convergence mechanism. [Description of References] 1 Binder opening unit 6 Guide groove 10 Bag opening convergence mechanism 11 Switch lever 1 Rotating shaft 13 Operating piece 14 Guide member (poly guide) 15 Lever piece 18 Through hole 19 Guide Piece 20 support shaft 21 operating rod 22 guide hole

Claims (1)

1. A clip formed of a plastic thin piece having an opening opened toward one end and a pair of leg pieces formed on both sides of the opening is disposed at the binding part. In a bag mouth bundling machine which is attached to the mouth portion of the bag and binds the mouth portion of the bag, a guide groove for guiding the mouth portion of the bag to the binding position, and inserted along the guide groove. A switch member that is rotated by the mouth of the bag to be pressed, and a guide member that presses the mouth of the bag in the guide groove toward the back of the guide groove, and the switch is provided at one end of the guide member. While being rotatably supported by a support shaft separated from the rotation support shaft of the member, an operation piece that is rotated integrally with the switch member is provided, and the operation piece and the guide member are linked to each other, so that the operation piece is The guide member through the support shaft Bag mouth convergence mechanism in the bag mouth for binding machine, characterized by being configured to rotate as a.