JPS6239436A - Bundling cutter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Purpose of the Invention (Field of Industrial Application) The present invention relates to an apparatus for cutting a bundle of articles, for example, for cutting a cylindrical film into a predetermined length and sealing the cut portion. A packaging machine for fruits and vegetables, etc., which expands the opening of the packaging bag, inserts the contents therein, ties the opening, and discharges the packaging bag
Reference No. 174413 relates to a device for cutting the binding rear opening.

(Prior art and problems to be solved by the invention) Conventionally, in this type of bagging and packaging machine, Japanese Patent Laid-Open No. 59-163
As described in Japanese Patent No. 109, after binding, the grip by the clamp member is released and the packaging bag is allowed to fall and be discharged.

However, at the bag opening, an ear remains above the tied part, and if this ear becomes too large, a device is required to efficiently and reliably cut off this ear after binding and before discharging. .

In addition to such bag filling and packaging machines, various packaging machines and other machines that require bundling and cutting require devices that efficiently and reliably cut the bound portions of articles.

Structure of the Invention (Means and Effects for Solving the Problems) The first invention is made to provide a matching neck, and as shown in the drawings of the embodiment described below, there is a cut through which the binding part 62 of the article 61 passes. aisle 35
(), the cutting edge 3 on the outer periphery of the rotatable circular cutter 36
The passage 35 is blocked by a part of the bridge 6a.

After bundling the articles [31], the bundling part 62 is connected to the cutting path 3.
5, is pressed against the cutting edge 36a of the 16-turn cutter 36 and cut, and the excess portion 6 is removed from the binding portion 62.
2a is separated.

Also, the second invention is shown in the drawings of the embodiments described later)
Then, the C1 rotatable circular cutter 36 and the other cutter 57 are crossed on the movement trajectory of the binding part 62 of the article 61, and the cutting edges 36a, 57a of these cutters 36° 57 are
The cutting grooves 58 are formed by this.

Then, when the binding part 62 is transferred to this cutting groove 58,
It is cut from both sides by the cutting edges 36a and 57a of the double-sided vines 36 and 57.

(Example) Hereinafter, an example in which the present invention is applied to binding and cutting the bag opening of a bag filling and packaging machine will be described with reference to the drawings.

As shown in FIG. 1, the clamp member 1 is supported between a pair of parallel main chains 2, and as shown in FIG.
It is designed to reach above 0. In this clamp member 1, as shown in FIG.
A pair of movable clamping plates 5 each having a fork shape are supported rotatably and movably in the axial direction. Each movable clamping plate 5 extends downward from the inside of this support shaft 4.
The clamping arm 6 is adapted to come into contact with the clamping surface 3a inside the fixed clamping plate 3. A cam roller 8 is supported by a slide shaft 9 on a movable arm 7 of each movable clamping plate 5 extending from the support shaft 4 to the outside of the fixed clamping plate 3, and the movable arm 7 of the movable clamping plate 5 extends along the support shaft 4. When moving, the cam roller 8 also moves along this slide @9 together with the movable arm 7. Both ends of the slide shaft 9 are held in springs 10 and biased in the direction of arrow B, so that the clamping arms 6 of the movable clamping plate 5 and the clamping surface 3a of the fixed clamping plate 3 are always closed. The fixed clamping plate 3 and the movable clamping plate 5 constitute a gripping section. As shown in Fig. 1.3, the packaging bag 61 containing the contents has an opening edge of +'+if
The clamping arm 6 of the movable clamping plate 5 and the clamping surface 3a of the fixed clamping plate 3
It is designed to be suspended and supported while being held between.

Between the carrier waves 11, as shown in FIG.
- 12 are arranged and hung storage part 6 of packaging bag 61
It can come into contact with one side of 1a. This main rotating belt 12 rotates in the same direction as the moving direction of the clamp member 1 while in contact with the packaging bag 61, and its rotational speed is slower than the moving speed of the clamp member 1. or,
An auxiliary rotating belt 1 faces the main rotating belt 12.
3 is arranged, rotates in the opposite direction to the main rotating belt 12, and transfers the hanging packaging bag 61 to the main rotating belt 12.
We will guide you between.

A pair of upper and lower guide rods 14 are disposed above and inside the main rotating belt 12, and an endless feed chain 15 is disposed above the auxiliary rotating belt 13, facing the guide rod 14. A guide passage 16 is formed between the guide rods 14 and the feed chain 15. Both guide rods 14 reach the bundle cutting device 20, and the lower guide rod 14 is inclined downward as it goes toward the bundle cutting device 20.

A plurality of first feed pawls 17 are attached to the feed chain 15 at equal intervals, and when the mouth portion 62 of the hanging packaging bag 61 moves through the guide passage 16, the mouth portion 62 is moved in the moving direction. It is supposed to be pressed to A. The feed chain 15
A second feed pawl 19 is supported on the lower surface of the sprocket 18 that is close to the binding cutting device 20 among the sprockets on which the sprocket is hung so as to maintain a constant distance from the lower surface. It protrudes slightly outward. Then, the feed chain 1
When this subblock l-18 rotates with the rotation of 5,
Each first feed pawl 17 of the feed chain 15 and the tip end 19a of the second feed pawl 19 of the sprocket 18 are wound around the sprocket 18 of the feed chain 15 at a constant interval in the downward direction of -F. Move facing each other.

The bundle cutting device 20 includes a guide passage 1 of the conveying device 11.
A binding passage 21 is formed that is linearly continuous with the binding passage 21, and the first feeding claw 17
and the second feed claw 19 move from a separated state to approach each other and face each other.

As for the pasting mechanism of the bundle cutting device 20, as shown in FIG.
A holding member 25 is rotatably attached to the other side edge of the binding passage 21 by a shaft 27, and is pressed against the outer periphery of the rotating member 22 by the force of a spring 26. The leading end 28a of the tape 28 that has been installed (pulled) in the bundle cutting device 20 is set so as to be held between the rotary member 22 and the holding part vI25. A bifurcated 1,7J cutting member 29 that rotates the cutter 30 and the engagement protrusion 31 to the right is rotatably attached to the shaft 32 on the side edge, and the cutter 30 is retracted from the binding passage 21 by the bias of the spring 33. At the same time, the engaging protrusion 31 extends around the binding passage 21.

6 (j) A discharge port 34 is continuously formed at the end 21b of the binding passage 21 located below the engaging protrusion 31 of the cutting member 29, and a discharge port 34 is continuously formed above the discharge port 34 at the end 21b. The arc-shaped cutting passage 35 is continuous in the moving direction A of the bag opening 62.
It is formed so that it comes off to one side. A rotatable circular cutter 36 is supported on one side of the cutting passage 35 (near the extension line of the binding passage 21), and a cutting edge 36 on the outer periphery of the cutter 36 is supported.
A part of the cutting passage 6a penetrates the cutting passage 35 and is embedded below one side edge 35a of the passage 35. This circular cutter 36
is driven via belt 37 and boot 138 as shown in FIG.

As shown in FIG. 3, a guide plate 39 rotatably supported by a support shaft 40 is provided above between the two main chains 2 and extends in the moving direction A of the clamp member 1. A connecting rod 44 is rotatably attached to shafts 45 and 46 between a bracket 41 fixed to the upper surface of the proximal end side of the bracket 41 and the distal end of a rotary arm 43 fixed to a drive shaft 42 above the bracket 41. When the rotary arm 43 pivots as the drive shaft 42 rotates, the guide plate 39 moves from the highest position shown in FIG. 3 to the highest position shown in FIG. It is designed to tilt between the lowered position and the lowered position. Note that the guide plate 39 at the highest position is inclined upward in the moving direction A of the clamp member 1, and the guide plate 39 at the lowest position is substantially horizontal.

As shown in FIG. 3, the guide plate 39 has a presser member 47.
is movably supported, and this pressing member 47 is attached to the guide plate 3.
It consists of a chassis 48 having a roller 48a that rolls along 9, and a pair of presser feet 49 attached to the lower part of the chassis 48, and these presser plates 49 are arranged so that the distance between them increases as they move downward. has been done. Also, the guide plate 39
A stopper 50 is fixed to the base end side of the stopper 50 so that its position can be adjusted,
As shown in FIG. 3, when the guide plate 39 is at the highest position, the chassis 48 of the presser member 47 comes into contact with the stopper 50 and is prevented from moving further towards the base end of the guide plate 39.

As shown in FIG. 1, an air blowing pipe 51 is attached to the four holding plates on one side of the chassis 48 of the holding member 47, and its air outlet 51a is inserted between both holding plates 49. An air supply hose 52 is connected to the air blowing pipe 51. Air is ejected diagonally downward from the air outlet 51a of the air blowing pipe 51 toward the space between the fixed clamping plates 3 of the clamp member 1.

As shown in Figure 2, cut off the tie! A discharge pipe 53 is disposed on the rear side of the Ii device 20, and a discharge port 54 is opened on the upper surface closer to one side than directly behind the two-circular cutter 36. An air jet pipe 55 is installed on one side of the discharge port 54, and an air supply hose 56 is connected to the air jet pipe 55. Air is ejected from the ejection port 55a of the air ejection pipe 55 toward the outlet 54 as shown by the arrow.

Now, the packaging bag 61 suspended from the clamp member 1 is transferred toward the binding cutting device 2o, and the housing portion 6 of the packaging bag 61 is
When one side of 1a comes into contact with the main rotating bell 1-12, the housing portion 61a is forced by the main rotating belt 12, which rotates at a rotational speed greater than the moving speed of the clamp member 1, to move in the direction of arrow P in FIG. The packaging bag 61 is rotated in the direction l\, and one portion 62 of the packaging bag 61 is twisted in the opposite direction of the P arrow. The other side of the housing portion 61a of the packaging bag 61 also comes into contact with the auxiliary rotating bells 1 to 13 that rotate in the opposite direction to the main rotating belt 12, so that the front twisting is facilitated. The first feed pawl 17 of the feed chain 15
supports the middle mouth part 62 of the packaging bag 61 during transport to prevent it from wagging, but it also has a function of preventing shaking during twisting. As it approaches, the packaging bag 61 is moved by the sloping lower guide rod 14.
The shoulder portion of the accommodating portion 61a is pressed downward, and in combination with the above-mentioned twisting action, the stored items can be further packed into the gap 4.

On the other hand, as the clamp member 1 moves, the opening 6 of the packaging bag 61
2 enters the recess 23 of the rotating member 22 from the guide passage 16 of the conveying device 11 through the entrance 21a of the binding passage 21.
As shown in FIG. 4, the tip end 288 of the tape 28 is bent along the recess 23 of the rotating member 22 so as to sandwich the opening 62, and then the opening 62 is bent by the rotation of the rotating member 22 as the opening 62 moves. It is pasted by sandwiching it. At this time, the mouth part 62
However, since the first feed pawl 17 and the second feed pawl 19 cooperate to press the mouth 62, the mouth 62 is supported by both the feed pawls 17 and 19, and the mouth 62 is Runout is prevented. In this state (when the recess 62 moves roughly and pushes the engagement protrusion 31 of the cutting member 29, the cutter 30 moves toward the binding passage 21 against the bias of the spring 33,
The tip 28a of the attached tape 28 is cut as shown in FIG. At the time of this cutting, the first and second feed claws 17.19 are about to move away from the mouth portion 62.

After this binding, the opening 62 of the packaging bag 61 is guided from the end 21b of the binding passage 21 to the cutting passage 35.

Since the passage 35 is formed in an arc shape deviating from the moving direction A of the bag opening 62, the bag opening 62 is pressed against the cutting edge 36a of the rotating circular cutter 36 and
The cut is made on the upper side of the chi 728. As a result of this cutting, the packaging bag 61 (see FIG. 5) falls from the clamp member 1 and is discharged.
Only 2a (see Figure 6) remains. The cutting edge 36a of the circular cutter 36 is wedged into one side edge 35a of the cutting passage 35 C.
Therefore, the passage 35 can be completely blocked and the bag opening 62 can be reliably brought into contact with the cutting edge 36a.

When the guide plate 39 is tilted downward from the highest position shown in FIG. 3 in synchronization with this binding and cutting, the presser member 47 is lowered with the tilting, and both sides are moved as shown by the imaginary line in FIG. The inner surface of the holding plate 49 is the movable holding plate 5 of the clamp member 1.
The force l\contacts the roller 8. Due to this contact, the holding member 47 moves along the guide plate 39 as the clamp member 1 moves. Meanwhile, the opening 62 of the packaging bag 61 reaches the binding/cutting device 20, where it is bound with the tape 28 and cut by the cutter 30 as described above.

Thereafter, when the guide plate 39 further tilts to the lowest position shown in FIG. 6, the presser member 47 descends while moving together with the clamp member 1 due to the tilting, and the presser plate 49 sinks into the cam roller 8 of the movable clamping plate 5. Then, the movable arm 77J of the movable clamping plate 5 (moves 1q in the direction of arrow B against the bias of the spring 10, and moves the clamping arm 3a of the fixed clamping plate 3).
and the clamping arm 6 of the movable clamp J blue plate 5 open to each other.

In synchronization with this opening, the air blowing pipe 5 is opened as shown in FIG.
Air is ejected diagonally downward from the air outlet 51a of No. 1 and hits the inner surface of the cut portion 62a of the bag mouth portion 62, causing the cut edge 62a
will surely fall into the discharge port 54 of the discharge pipe 53. In synchronization with this fall, air is jetted from the jet port 55a of the air jet pipe 55 to the discharge port 54, and the cut portion 62a is reliably sent to the discharge pipe 53.

Thereafter, when the guide plate 39 is moved upward by 1 m from the lowest position shown in FIG.
moves up with the clamp member 1! f1, as the holding member 47 moves upward, the holding member 49 moves to the holding plate 5.
The movable arm 7 of the movable clamping plate 5 is released from the cam roller 8 by the bias of the spring 10, and the gap between the clamping surface 3a of the fixed clamping plate 3 and the clamping arm 6 of the movable clamping plate 5 is closed again.

Furthermore, as the guide plate 39 is tilted in one direction, the holding member 47 moves toward its base end along the l-shaped guide plate 39, and reaches the stopper at the lowest position shown in FIG. 50
Comes into contact with. In this state, the next clamp member 1 is moved C' below the holding part 447, and the packaging bag 61 and the cutting 462a are moved under the same action as described above.
One sheet of seaweed is made.

Incidentally, the tip 36a of the circular cutter 36 may cut only a part of the cutting passage 35.

Next, as shown in Figure 7'? For the example of l(I!!),
A part of the cutting edge 36a of the circular cutter 36 is in the cutting path 3.
5 and along one side edge 35a of the arc-shaped part, above the circular cutter 36, another auxiliary cutter 57 (having a straight cutting edge 57a in this embodiment) is cut above the circular cutter 36. They intersect in different ways. Due to this intersection, the cutting edges 36a, 57 of these cutters 36.57
Approximately V-shaped cutting grooves 58 are formed that diverge from the front intersecting vertices 58a of a.

Then, the bag 1 section 62 is cut through the cutting path 35 (movement path).
When transferred through the cutting groove 58, the double force vine 3
It is cut from both sides by the cutting edges 36a and 57a of 6 and 57. Therefore, the bag opening 62 can be cut more reliably.

Effects of the Invention In short, according to the first invention, the rotatable circular cutter 3
6, the bundle 62 passing through the bundle cutting device 35 can be efficiently and reliably cut, and the excess portion 62a can be removed from the item 61.

Further, according to the first invention, by effectively connecting the other cutter 57 to the circular cutter 36, the binding portion 62 can be cut more reliably.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing a part of a bag filling and packaging machine equipped with a bag opening device according to an embodiment of the present invention, and FIG.
- An X-ray sectional view, Figure 3 is a partial side view showing the grip release function of the packaging bag, Figure 4 is a partial plan view showing the binding cutting device and the cutting/discharging device, and Figure 5 is a partial plan view showing the packaging bag after it is cut after binding. FIG. 6 is a partial perspective view showing the packaging bag, FIG. 6 is a partial side view showing the discharge action of the cutting ear, and FIG. 7 is a partial plan view showing another embodiment. Clamp member 1, conveyance device 11, binding cutting device 20, l
l7J disconnection passage 35, side edge 35a, circular cutter 36, cutting edge 36a, air blow-off pipe 51, blow-off [ ] 51a, discharge tube 5
3, discharge port 54, air jet pipe 55, jet port 55a, auxiliary cutter 57, cutting edge 57a, cutting [9i full 58, packaging bag (
Item) 61, opening and binding part) 62, cutting IT 62a.

Claims (1)

[Claims] 1. A cutting path (3) through which the binding part (62) of the article (61) passes.
5), and the passageway (35) is blocked by a part of the cutting edge (36a) on the outer periphery of the rotatable circular cutter (36). 2. The bundle cutting device according to claim 1, wherein a part of the cutting edge (36a) of the circular cutter (36) is recessed below one side edge (35a) of the cutting passage (35). 3. Rotatable circular cutter (36) and other cutters (57) on the movement trajectory of the binding part (62) of the article (61)
These cutters (36) (57)
A binding cutting device characterized in that a cutting groove (58) is formed by the cutting edge (36a) (57a) of the blade (36a) (57a).