JP3533864B2 - Guide mechanism for bag mouth in binding machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case where a bag mouth of a bag to be bound is introduced into a front end of a guide groove formed in a binding machine body. The present invention relates to a guide mechanism that is guided to tilt forward. 2. Description of the Related Art After a bag mouth is introduced into a front end of a guide groove of a binding machine main body, the bag mouth is held in a U-shaped sheet-shaped clip (see FIG. 9) made of synthetic resin, and the clip is closed. When the leg pieces on both sides are crossed and overlapped, and the overlapped portion is doweled and caulked, the clip is preferably conical as shown in FIGS. 10 and 11. This is because, when the clip is pushed up, the mouth portion where the bag mouth is bound becomes smaller, so that it becomes more and more difficult to come off, and the bag mouth can be firmly bound. [0003] However, when the legs of the clip intersect, the legs do not always have a regular conical shape with the apex upward as shown in the above figure. Often an inverted cone. In this case, the clip easily comes off easily, and binding failure easily occurs. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks, to solve the above-mentioned problems, and to provide a bag mouth guiding mechanism in a binding machine capable of forming a clip into a conical shape in which a vertex is always upward. I do. [0005] In order to solve the above problems, a guide mechanism for a bag mouth in a binding machine according to the present invention is to be bound at a front end of a guide groove formed in a binding machine body. The bag mouth of the bag is introduced, and a U-shaped sheet-shaped clip is sent from the same side as the bag introduction side toward the front end of the guide groove to hold the bag mouth in the clip. superimposed crosses both sides of the leg, the polymerization unit for bundling tighten or to put dowel, or the guide groove
Binding machine that guides the bag mouth of the bag introduced from above to its front end
In the bag opening guide mechanism , an insertion portion into which the leg of the clip is inserted is formed at the front end of the guide groove, and the upper end of the opening end of the insertion portion is shifted forward from the lower portion so as to move forward. The bag mouth is inclined forward when pressed against the front end of the guide groove. FIG. 1 is a schematic view of a binding machine. This binding machine mainly comprises a driving section 1, a feeding section 2 and a caulking section 3, and is formed on a binding machine main body A. After being introduced from the guide groove 5 of the bag mouth 4 of the bag to be bound into the front end 6 thereof, the U-shaped clip a is fed by the feed mechanism of the feed unit 2 to the front end 6 of the guide groove 5.
The bag mouth 4 is sandwiched in the clip a, and both legs of the clip a are crossed and overlapped. Then, the caulking mechanism of the caulking portion 3 is operated to remove the leg 7 of the overlapped clip a. And caulked as shown in FIG. As shown in FIG. 9, the binding clip a is formed of a synthetic resin sheet, and engaging holes 8 are formed in the leg pieces 7 on both sides. An engagement groove 9 is formed at the base of each leg piece 7. The guide groove 5 is formed by two upper and lower plate members 10 and 11 as shown in FIG.
At the rear portion between the upper plate 10 and the lower plate 11, a crossing mechanism 12 provided in the feeding portion 2 and bringing the leg pieces 7 on both sides of the clip a close to each other and crossing the front portion is provided. A caulking mechanism 13 for doweling the overlapped leg piece 7 is arranged. As shown in FIG. 5, the cross mechanism 12 includes a carrier 14 movably movable forward and backward in association with the driving unit 1, and a clip holding member 15 slidably provided on the carrier 14. An arm holding member 16 slidably provided on the clip holding member 15 and a pair of C-shaped tie pin arms 17 rotatably connected to a support shaft 19 of the clip holding member 15. . A clip holding member 15 is provided on the carrier 14 and an arm holding member 16 is slidably provided on the clip holding member 15. On both sides of the arm holding member 16, feed arms 16a are rotatably mounted.
A tie-pin arm 17 is connected to the front end of a. The tie pin 1 formed at the tip of the tie pin arm 17
Reference numeral 8 is engaged with the engaging hole 8 of the leg 7 of the clip a. In the crossing mechanism 12, when the carrier 14 moves from the initial position in FIG. 5, the clip holding member 15 and the arm holding member 16 move together as shown in FIG. When it reaches, the clip holding member 15 stops, but the arm holding member 16 is configured to move further in the same direction together with the carrier 14. After the clip holding member 15 stops, the feed arm 16a also moves forward by further moving the arm holding member 16, so that the tie pin arm 17 rotates inward about the support shaft 19, and the tie pin arm 17 The leg pieces 7 of the clip a engaged with the tie pins 18 are moved inward, cross and overlap. The caulking mechanism 13 includes a base member 20 and a base member 2 provided on the binding machine main body A as shown in FIG.
A pivot plate 21 pivotally mounted in a seesaw shape at the center of the base member 20. A pin 22 for doweling is formed on the base member 20, and a concave die 23 is formed on the pivot plate 21. The rocking plate 21 is rocked by moving a pair of rollers 24 moving along the upper surface of the base member 20 back and forth. Inclined surface 26 of projection 25 at both ends
Is moved along the upper surface of the convex portion 25 to swing the swing plate 21 so that the crossover portion of the leg 7 of the clip a inserted between the pin 22 and the die 23 is doweled. It is a caulking thing. As shown in FIG. 2, the front end of the guide groove 5 has the clip a
An insertion portion 27 for inserting the leg portion is opened. The upper end 10a of the upper plate 10 that constitutes the open end of the insertion portion 27 is disposed so as to be shifted forward from the end 11a of the lower plate 11. For this reason, the insertion portion 27 is formed so as to be inclined forward. According to the above configuration, the bag mouth 4 is connected to the guide groove 5
2 and pressed against the front end thereof, the bag mouth 4 first strikes the end 11a of the lower plate 11 as shown in FIG.
Is tilted forward by the insertion portion 27. When the clip a is sent from the rear while in the forward inclined state, the clip a
Leg piece 7 sandwiches the bag mouth 4, and immediately thereafter, the engaging groove 9 between the leg pieces 7 engages with the bag mouth 4. Then, even after the groove end of the engaging groove 9 hits the bag mouth 4, the clip a is sent further forward, so that the engaging groove 9 moves upward along the surface of the bag mouth 4 inclined forward as shown in FIG. You will be guided to move. Therefore, when the cross mechanism 12 is actuated after the feed and the two leg pieces 7 are brought close to each other and crossed, the clip a forms a conical shape as a whole as shown in FIG. 1
8, the leg piece 7 does not move up and down at the time of feeding the clip a, but the engaging groove 9 moves upward at the time of feeding as described above. Since the portion of the engaging groove 9 forms the vertex of the cone, the shape of the clip a at the time of intersecting the leg always has a conical shape with the vertex upward because the portion is above. After the legs intersect, the caulking mechanism 13 is actuated, the overlapping portion of the legs 7 is caulked by doweling, and binding is completed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an outline of a binding machine according to the present invention. FIG. 2 is a cross-sectional view showing a bag opening guide mechanism. FIG. 3 is an enlarged view showing a guide mode of the guide mechanism. FIG. 4 is a cross-sectional view showing a state where legs are crossed by the guide mechanism. FIG. 5 is a plan view of a main part showing a leg crossing mechanism of a clip. FIG. 6 is an explanatory view of an operation mode of the leg crossing mechanism. 7 is a sectional view of a main part of a caulking mechanism of a leg piece. FIG. 8 is an explanatory view of an operation mode of the caulking mechanism. FIG. 9 is a perspective view of a clip a. FIG. 10 is a perspective view showing a binding state of a bag mouth. 11 Cross-sectional view of clip in bound state [Explanation of symbols] a Clip A Binder body 4 Bag opening 5 Guide groove 7 Leg piece 10 Upper plate 11 Lower plate 27 Insertion section

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65B 51/00-51/32

Claims (1)

(57) [Claims 1] A bag mouth of a bag to be bound is introduced into a front end of a guide groove formed in a binding machine main body, and the guide is provided from the same side as the bag introduction side. A U-shaped sheet-shaped clip is sent toward the front end of the groove to hold the bag mouth in the clip, and the legs on both sides of the clip are crossed and overlapped, and the overlapping portion is doweled. or tighten for unity
The bag mouth of the bag introduced from the guide groove to the front end
In the guide mechanism of the bag mouth of the binding machine for guiding, a front end portion of the guide groove is formed with an opening in which a leg of the clip is inserted, and an upper end of the opening end of the insertion portion is lower than a lower end. A bag opening guide mechanism in a binding machine, wherein the bag opening is inclined forward when the bag opening is pushed forward against the front end of the guide groove.