JPH02180119A - Film supply apparatus - Google Patents

Abstract

PURPOSE:To contrive the automated selection of a film bobbin and prevent its movement in a zigzag direction by retaining a number of different kinds of film bobbins with different model numbers in a free rotation manner by an endless encircling body freely movable along a closed curved track and locating this film bobbin in a predetermined unloading positon to be carried off from the rotation track. CONSTITUTION:A stacker 2 is an endless rotation body supported by a cylindrical base frame 5 and freely movable along a closed curved track. When a film bobbin B of the required model number is selected, a chain 6 is set in the decelerated rotation motion and, when the bobbin-carrying tray 8 reaches an unloading position, brought to a stop to force the tray 8 off from the track together with the film bobbin B by a tray unloading means 20. This unloading means arranges the film bobbins B in vertical centering by an equidistant up- and-down motion of retaining bodies 31 and 32 in coactive relation and in horizontal centering by an equidistant back-and-forth motion of chucks 39 and 40 in coactive relation.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a film supplying device required for supplying a film for packaging bags to a packaging device for granular materials such as rice.

<Prior Art> Ganto Toyama previously proposed a packaging device for powder and granular materials in Japanese Patent Application No. 62-271794. This packaging device can automatically sort packages into various capacities and sizes, and realizes even greater efficiency and labor savings in packaging a wide variety of products in small quantities.

<Problems to be Solved by the Invention> However, the automation of film supply and film bobbin handling related to this has not yet been sufficient.

Therefore, in this invention, we have developed a film supply system suitable for automatically supplying the necessary film according to the packaging sorting to a packaging device that automatically sorts small quantities and many kinds of packaging into various capacities and sizes. The aim is to provide equipment.

Means for Solving the Problem> Specifically, the film bobbin supply mechanism includes a film bobbin supply mechanism and a film guide mechanism, and automatically introduces a film from a film bobbin selected in the film bobbin supply mechanism into a packaging device, or This is a film feeding device for automatically rewinding the film introduced into the film bobbin into the film bobbin. A plurality of base brackets are attached at appropriate intervals so that the posture can be maintained, a tray is assembled on each base bracket so as to be able to move forward and backward for placing a film bobbin, and a film a detection means for detecting the model number code given to the bobbin; a tray advance means for advancing the tray on which a film bobbin of the designated model number is placed out of the revolving orbit when the tray is placed at a predetermined take-out position; a take-out means for picking up the film bobbin, positioning it at a predetermined chuck height position, and centering it in the vertical direction; a pair of chuck claws that can move forward and backward at equal distances in conjunction with each other; and a drive or brake for the chuck claws. It has an operating body that gives an action,
The vertically centered film bobbin is positioned in a predetermined horizontal plane position, and the horizontal centering direction is adjusted.
The film guide mechanism includes a chuck means that allows the film to be freely fed out and wound around the film bobbin in the horizontally centered position, and the film guide mechanism includes a feed roller,
A set lever body that allows the idle roll to come into contact with the feed roller by rotating up and down, and one end near the feed roller and the other end connected to the film supply port of the packaging device.
To provide a film feeding device comprising guide bodies facing each other.

Function> This film supply device holds various types of film bobbins with respective model number marks in a rotatable manner on an endless revolving body that can freely rotate on a closed curve track, and rotates them according to the specifications from the control mechanism. Automatic film bobbin selection is achieved by positioning a designated film bobbin during rotation at a predetermined delivery position and sending it out of the revolving orbit from this predetermined delivery position.

In addition, this film feeding device mechanically precisely aligns the film bobbin in both the vertical and horizontal directions, which eliminates the need for, for example, meandering adjustment rollers, which would otherwise make the film feeding mechanism complicated and bulky. This eliminates the need for such devices, eliminates the trouble of meandering of the film, and solves the problem of reduced work efficiency due to trouble.

In addition, this film supply device uses a film guide mechanism that sets the film on the feed roller by a set lever body and guides the film to the film supply port of the packaging device by a guide body, from the chucked film bobbin to the packaging device. We are trying to automate the introduction of film into the system.

Example of implementation Embodiments of the present invention will be described below with reference to the drawings.

This film supply device 100 automatically selects a necessary film bobbin and automatically feeds film from this film bobbin for a packaging device that packages powder and granular materials such as rice while producing bags of a necessary size. As shown in Figure 1, the film bobbin supply mechanism l
and a film guide mechanism 60.

The film bobbin supply mechanism 1 includes a stocker 2, a take-out means 3, and a chuck means 4, as shown in FIGS. 2 and 3.

The stocker 2 is an "endless revolving body" supported by a tower-shaped foundation frame 5 and capable of rotating freely as shown by arrow X on a closed curve trajectory.
Specifically, the chain 6 has 10 base brackets 7.
7, ---, and a tray 8 is assembled on this base bracket 7. On the tray 8, various model numbers, that is, the brand of the powder or granular material to be packaged, and the film that gives the packaging capacity are displayed. Various model numbers of film bobbins B classified by width size, length size, material, etc. can be freely placed. In the figure, 6a is a sprocket around which the chain 6 is suspended, and 6m is an inverter motor for driving.

As shown in FIGS. 3 and 4, the base bracket 7 is formed of a horizontal frame 9.10 and a vertical frame 11.11. It is attached to the chain 6 in a pin structure via .12. Therefore, even if the chain 6 rotates in a closed curve trajectory, each base bracket 7
It is possible to maintain a constant posture at all times, that is, a posture in which the tip is tilted slightly upward at an angle described later.

As shown in FIG. 4, the tray 8 is constructed by attaching a support plate 17 consisting of a bottom support part 15 and a back support part 16 to a base plate 14, and a sliding member 18 connected to the base plate 14. It is attached to the horizontal frame 9 via. In order to stably hold the film bobbin B, the bottom support part 15 and the back support part 16 are formed at a certain angle, specifically, each is approximately 20" with respect to the horizontal line, and the angle between them is 14o. The tray 8 as a whole can move forward and backward as shown by the arrow Y at the aforementioned angle of 20 degrees with respect to the horizontal line.

Here, the width size of the support plate 17 is set to be narrower than the width of the minimum width of the film bobbin B in order to take up the film bobbin B described later.

In the figure, reference numeral 19.19 is a backing plate that regulates the side surface of the film bobbin B, and is attached to the horizontal frame 9 of the base bracket 7, so that the interval can be adjusted according to the width size of the film bobbin B. ing.

Each film bobbin B is given a model number in the format described below, and when the model number to be supplied is designated by a control mechanism built in a computer (not shown), a photoelectric sensor 22 (described later) is assigned a model number based on this designation. The required model number is read, and the film bobbin B to be taken out is selected. When the desired model number of film bobbin B is selected, the chain 6 is decelerated and rotated, and stops when the tray 8 carrying the film bobbin B reaches the take-out position. When the chain 6 stops, the tray advancing means 20 pushes the tray 8 together with the film bobbin B out of the orbit.

The method of pushing the film bobbin B out of the revolving orbit together with the tray 8 is one of the features of this stocker 2, and it makes the subsequent operations relatively simple as will be described later. Thick (contributes) on the top.

Here, the mechanism for detecting the model number of the film bobbin B and detecting that the tray 8 has reached the take-out position is as follows.

That is, as shown in FIG. 5, it is a combination of a signal board 21 attached to the vertical frame 11 of the base bracket 7 and a photoelectric sensor 22 as a "detection means" attached to the base frame 5. The plate 21 has a stop position fin 23 and a plurality of model number fins 24, 24,
. In other words, model number fin 24.
The model number is detected by the number and arrangement of the fins 24, .--, and the chain 6 starts decelerating at the same time as the model number fin 24.24, ---m--- is detected, and the chain 6 is stopped when the stop position fin 23 is detected. let As you can see from this, the model number of film bobbin B is not directly given to film bobbin B, but the model number is given to base bracket 7, that is, tray 8, and film bobbin B with the corresponding model number is placed on this tray 8. As a result, film bobbin B is given a model number.

The tray advancing means 20 includes a lever 27 on a shaft 26 that rotates by the driving force of an air cylinder 25 connected in a link shape.
The tray 8 is pushed out by a lever 27 that rotates along with a shaft 26 as shown by the arrow Z.

At this time, the tray 8 is fixed at the angle 2 of the bottom support portion 15 as described above.
0', but the advantage of extruding at the angle of the bottom support part 15 arises with respect to the relationship with the take-out means 3 and the chunk means 4, which will be described later. In other words, if the film bobbin B is pushed up even slightly from above the tray 8 by the take-out means 3, the tray 8 can be moved backward, so that the next chuck means 4
This means that the activation timing can be accelerated.

As seen in FIGS. 6 and 7, the extraction means 3 includes:
It is equipped with a pair of upper and lower holding bodies 31.32 each having a pair of boomerang-shaped holding claws 30.30 on the left and right sides, and these holding bodies 31.32 interlock with each other to lower and rise at equal distances to clamp the object. As a result, the film bobbin B is picked up from the tray 8 which has been pushed out as described above. Here, the interlocking movement of the holding bodies 31.32 is achieved by connecting each proximal end 33.34 of the holding bodies 31.32 to an endlessly rotating chain 35.

In this way, the pair of holders 31 and 32 move down and rise by equal distances in conjunction with each other, which means that even if the diameter of the film bobbin picked up by the holders 31 and 32 differs depending on the amount consumed, This means that the center of film B is always at a constant height, and that film bobbin B is centered in the vertical direction.

The chuck means 4 consists of a pair of chuck bodies 39, 40 and an operating body 41, as seen in FIGS. 6 to 11.

Each chuck body 39.40 has an abutment plate 42.42 as a stopper member at its base end, and three rotating pawls 43.43.43 at its distal end (see FIGS. (Fig. 11), the rotating claws 43, 43 of each chuck body 39, 40, while being held by the contact plates 42, 42,
The film bobbin B is chucked by rotating outward and pressing the paper tube (core tube) from the inside.

One of the reasons why the film bobbin B was chucked by pressing the paper tube from the inside was because
In order to ensure centering accuracy in the horizontal direction, which will be described later, when chucking is done using the commonly used clamping method using a tapered pressing surface, the ends of the paper tube are likely to be damaged.
This is to avoid the fact that the more damaged the centering accuracy in the horizontal direction becomes, the more the centering accuracy in the horizontal direction deteriorates.One reason is to ensure that sufficient driving force can be transmitted even with one-sided drive, which will be described later.

The rotating claw 43 is formed by forming a pressing protrusion 45 at the tip of an L-shaped main body 44 and attaching a bearing 46 to the base end. The proximal end portion is pushed through the bearing 46 by the pressing body 48, which moves back and forth as shown in FIG.

In addition, 48s in FIG. 10 is a spring for rotating the rotating claw 43 inward.

Each chuck body 39.40 has a bushing 49.49, respectively.
The support frame bodies 50.50 are connected to rack gears 51 and 52, respectively.

That is, by moving one rack gear 51 forward and backward as shown by arrow U using the air cylinder 53, and transmitting this forward and backward movement to the other rack gear 51 via the pinion gear 54, each chuck body 39, 40 can be moved They are linked and move forward and backward at equal distances.

Each chuck body 39.40 moves forward until the abutment plate 42.42 attached to each chuck body abuts the side surface of the film bobbin B. As a result, the film bobbin B moves regardless of its width size. , the film bobbin B is always placed at a certain horizontal plane position, specifically, at a horizontal plane position corresponding to the mechanical core of the packaging device P that is intended to supply film from the film bobbin B, and the horizontal centering of the film bobbin B is performed. You will be killed.

The actuating body 41 is composed of a brake motor 55 and a powder clutch 56, and applies a driving and braking action to only one chuck body 39. That is, this chuck means 4 is driven in one direction to simplify the structure. Specifically, when receiving the driving force from the packaging device P and unwinding the film F from the film bobbin B, the brake motor 55 performs only a braking action, and this braking action is performed by a buffer means called a powder clutch 56. In order to wind up the film that is originally applied to the film bobbin B and that extends into the packaging device P to change the model number of the film bobbin B, the brake motor 55 is driven in the winding direction while winding. However, at that time, the packaging device P
Similarly, the driving force of the brake motor 55 is transmitted to the film bobbin B through the intervention of a powder clutch 56, which is a buffer means, so that the film can be wound in accordance with the driving speed of the film bobbin.

As can be seen from this, the reason why the buffering means called the powder clutch 56 was provided is that even if the diameter of the film bobbin B changes according to consumption, the feeding or winding speed of the film F does not change and is always constant. This is to create tension.

Regarding the feeding of the film F, a braking action may be applied by applying appropriate rotational friction to the bushing 49, or the rotational friction of the bushing 49 and the braking action by the above-mentioned brake motor 55 may be applied appropriately. It may be combined with

The film guide mechanism 60 includes a feed roller 61, a set lever body 62, and a guide body 63, as shown in FIGS. 12 and 13.

The feed roller 61 is used to apply a feeding force to the film F in order to guide it into the packaging device P or to collect it from the packaging device P, and faces the film supply opening of the packaging device P.

The set lever body 62 is formed by holding an idle roller 65 by a pair of lever arms 64, 64, and is connected to a shaft 67 that rotates by the driving force of an air cylinder 66 connected in a link shape. In response to the rotation of the
1.

The guide body 63 is connected to the lever arm 64 of the set lever body 62.
．． 64, and when it rotates upward, one end is placed near the feed roller 61 and the other end is placed near the packaging device P.
It is like a slide facing the film supply opening.

Note that 68 in FIG. 13 is a drive motor for the feed roller 61.

By rotating upward, the idle roller 65 pushes up the introduction hanging part H, which is previously suspended by a predetermined length from the film bobbin B, and brings it into contact with the feed roller 61, so that the film F is in the feeding state. set. and,
As a result, the film F receiving the feeding force of the feeding roller 61
is introduced into the packaging device P while being guided by the guide body 63. And 7, the introduction of film F is completed.
To prevent the film F from meandering, the set lever body 62 is returned to the lower side in order to eliminate the involvement of an extra roller.

Conversely, when winding up the film F extending into the packaging device P, the set lever body 62 is rotated upward and the idle roller 65 presses the film F against the feed roller 61, thereby reducing the feeding force of the feed roller 6l. Add .

The operation flow of the film supplying apparatus 100 as described above is briefly summarized as follows.

7 J/L Tsu 41 and Liver ν Command from control mechanism → Film bobbin selection → Tray 8 stop → Tray 8 advance → Primary lowering/raising of holding body 31.32 → Film bobbin temporary holding → For introduction by set lever body 62 Retraction of the clamp tray 8 of the hanging portion H → holder 31.
Secondary lowering/raising of 32 (vertical centering) → Advancement of chuck body 39.40 (film bobbin chuck) → Film feeding.

2ヱ''YΩ1 Command from the blow control mechanism → Upper rotation of the set lever body 62 → Drive of the feed roller 61 and chuck body 39 → End of winding → Lowering and raising of the holding bodies 31 and 32 → Holding the film bobbin → Chuck body 39.40 retreat → tray 8 forward → holder 31
．． Raising and lowering of 32 → Holding of film bobbin by tray 8 → Tray 8 retreats.

<Effects of the Invention> Since this film supply device is as described above, it has the following effects.

(a) Various types of film bobbins with respective model number marks are held in a rotatable manner on an endless revolving body that can freely rotate on a closed curve trajectory, and the designated film bobbins are rotated according to instructions from the control mechanism. Since the film bobbins are positioned at a predetermined delivery position and sent out from the predetermined delivery position to the outside of the revolving orbit, the necessary film bobbins can be automatically selected and supplied from a wide variety of film bobbins classified by model number.

(b) Since the film bobbin is precisely centered in both the vertical and horizontal directions mechanically, there is no need to install a meandering adjustment mechanism such as a meandering adjustment roller, and there is no problem of meandering of the film. Therefore, the mechanism related to film feeding can be simplified and work efficiency can be improved.

(c) Since the set lever body sets the film on the feed roller and the guide body guides the film to the film supply port of the packaging device, the film can be introduced from the chucked film bobbin to the packaging device. Automation is being planned.

(d) As a result of the above-mentioned effects, it becomes suitable for automatically supplying the necessary film according to the packaging to a packaging device that automatically separates many types of packaging.

[Brief explanation of the drawing]

Fig. 1 is a simplified side view showing the state in which the film supply device is connected to the packaging device, Fig. 2 is a schematic side view of the stocker, and Fig. 3 is viewed from the direction of the arrow ■ in Fig. 2. FIG. 4 is a schematic perspective view of the base bracket and tray; FIG. 5 is a schematic perspective view showing the relationship between the signal board and the photoelectric sensor; FIG. 6 is a schematic perspective view of the ejecting means and the chuck. FIG. 7 is a schematic side view of the chuck means as viewed from the direction indicated by the arrow (■) in FIG. 6; FIG. 8 is a schematic plan view of the chuck means; FIG.
Figure 10 is a schematic side view of the chuck body, Figure 11 is a schematic side view viewed from the direction of arrow ■ in Figure 10, Figure 12 is A schematic side view of the film guide mechanism, and FIG. 13 is a schematic side view viewed from the direction indicated by the arrow in FIG. 12. 1---Film bobbin supply mechanism 2---Stocker 3---1 Taking out means 4---Chuck means 6---Chain (endless revolving body) 7---Base bracket 8-・---Tray 20---) Tray advancement means 22・-1111 Photoelectric sensor (detection means) 39.40・
---Chuck body 41--Operating body 60--Film guide mechanism 61--1--Feed roller 62--1 set of lever bodies 63--111--Guide Body 65-m--Idle roller 100--1-Film supply device B--Film bobbin P--1 Packing device Fig. 6 Fig. 9 Fig. Mouth ■ Whistle Fig. 7

Claims (1)

[Scope of Claims] Comprised of a film bobbin supply mechanism and a film guide mechanism, the film bobbin supply mechanism automatically introduces a film from a selected film bobbin into the packaging device, or the film introduced into the packaging device. A film feeding device for automatically rewinding onto a film bobbin, wherein the film bobbin feeding mechanism is an endless revolving body that can freely rotate on a closed curve trajectory, and the endless revolving body can maintain a constant posture at all times. a plurality of base brackets attached at appropriate intervals, a tray assembled on each base bracket so that it can move forward and backward for placing the film bobbin, and a detection means for detecting the model number code given to the film bobbin. , a tray advancing means that advances the tray on which a film bobbin of a specified model number is placed, when it reaches a predetermined take-out position, out of the revolving orbit, picks up the film bobbin from the advanced tray, positions it at a predetermined chuck height position, and moves it vertically. A take-out means for performing directional centering, a pair of chuck jaws that can move forward and backward an equal distance in conjunction with each other, and an actuating body that applies a driving and braking action to the chuck jaws, and vertical centering is performed. The film bobbin is positioned at a predetermined horizontal plane position to center it in the horizontal direction, and is provided with a chuck means for freely feeding and winding the film on the film bobbin at the horizontally centered position, The film guide mechanism includes a feed roller, a set lever body that allows the idle roll to come into contact with the feed roller by rotating up and down, and one end near the feed roller and the other end connected to the film supply port of the packaging device. A film feeding device characterized by comprising guide bodies facing each other.