JPH07187112A - Packaging apparatus - Google Patents

Abstract

PURPOSE:To make adjustment possible for pockets while preventing contents from springing out by a method wherein a fluid supply source of a control device is adjusted only to an actuator connected to a pocket positioned in a section other than those in take-in-and-out positions in a turret that is equipped radially with a plurality of pockets having clipping and separating devices. CONSTITUTION:In a pocket 1 stopping at a take-in position Pi by intermittent rotation of a turret A, an actuator 2 is connected to a clipping face 1a, enabling contents B to approach and separate, and the clipping face 1a is moved toward the clipping face 1b in the opposite position. In this position, the tail end of a supply passage 4a connecting to the actuator 2 does not agree with a recess 4b of a control device 4, preventing fluid from being supplied from a fluid supply source 3, and thereby the clipping is made with a weak force, and the contents B come in with the clipping face la enlarged forcibly. As the turret turns and the pocket 1 comes into a working section, air is supplied and thereby the contents B are clipped so that they cannot be taken out. The pressure of the fluid is adjusted altogether at once, making individual adjustment unnecessary.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging device for overwrapping a box-like content such as a cigarette wrapped with a wrapping or a paper with an encapsulating material such as cellophane, polypropylene or wax paper. A plurality of pockets are radially provided on the outer circumference of the rotatable turret, and the box-shaped contents and the wrapping material wrapped around this are sequentially loaded into these pockets, and the wrapping material is kept inside the pocket while rotating the turret. The contents of the present invention are folded along with the contents, and the contents after the folding are sequentially carried out from the pocket.

[0002]

2. Description of the Related Art Conventionally, as a packaging device of this type, as disclosed in, for example, Japanese Patent Publication No. 61-39251, a folding guide and a sealing heater are arranged around an intermittently rotating turret, and the package is fed out. By hitting the contents against the packaging material and pushing it into the turret pocket,
The wrapping material is wrapped in a U shape, and the turret rotates after folding one end of the wrapping material protruding from the pocket,
The other end of the encapsulating material hits the folding guide and is folded and superposed, and when this superposed portion comes into contact with the sealing heater, the rotation of the turret is stopped and welded. The contents from which the body winding is completed are carried out to the turret in the subsequent process,
Some turrets are intermittently rotated and the square tubular ends of the encapsulating material protruding from the side surfaces of the contents are sequentially folded and welded.

[0003]

However, in such a conventional packaging device, since the turret is rotated with the opening of the pocket through which the contents come in and out, the centrifugal force causes the contents to pop out of the pocket. When force is applied in the direction, the boxes near the opening of the pocket pop out, especially if the contents are stacked in multiple boxes, resulting in poor packaging, and even if the contents are relatively large and heavy, the opening of the pocket However, there is a problem in that the contents move against the turret, and the contents collide with the folding guides and the like arranged around the turret, resulting in defective packaging.

Therefore, one of a pair of holding surfaces facing each other with the contents of each pocket interposed therebetween is supported so as to be reciprocally movable toward and away from the contents, and the reciprocating holding surfaces are compressed springs. It is conceivable that the contents may pop out between these both holding surfaces and be immovably sandwiched by pressing the contents with an elastic body such as.

However, in this case, in order to completely prevent the contents from jumping out and moving, an elastic body having a large compression force must be used, which causes the contents to be pinched with a strong force and damages the contents. If you use an elastic body with a small compressive force to maintain the quality of the contents, you can not completely prevent the contents from jumping out and it is very difficult to select an elastic body that corresponds to the rotation speed of the turret. At the same time, there is a problem that the adjustment work must be carried out for each pocket, which is troublesome.

[0006] Further, either one of a pair of holding surfaces facing each other with the contents of each pocket interposed therebetween is supported so as to be reciprocally movable toward and away from the contents, and these reciprocating holding surfaces are supported by a cam. After the content is loaded into the pocket, it moves toward the content and pops out the content so that it cannot be moved, and immediately before the content is loaded from the pocket, the reciprocating holding surface moves away from the content. It is also possible to release the contents.

However, in this case, a cam mechanism is required for each pocket, the structure is complicated and the cost is increased, and the size of the entire apparatus is increased, and it is difficult to adjust each pocket. There is.

In view of such conventional circumstances, it is an object of the present invention to adjust all the pockets at one time while preventing the contents from popping out of the pockets due to the rotation of the turret.

[0009]

[Means for Solving the Problems] The technical means provided by the present invention for solving the above-mentioned problems is to contact and separate either one of a pair of holding surfaces facing each other with the contents of each pocket interposed therebetween. The actuators are reciprocally supported in the same direction, and the actuators that move the reciprocally movable holding surfaces toward the contents are connected in series, and the carry-in position where the contents are carried into each pocket and the contents from each pocket. Except for the actuators in the pockets located at the carry-out position, the control means for communicating only the actuators in the pockets located in the work section from the carry-in position to the carry-out position and the fluid supply source are connected to the turret pockets. However, the adjusting means for adjusting the fluid pressure from the fluid supply source is provided in the supply path from the fluid supply source to the control means.

[0010]

According to the above technical means of the present invention, the turret starts to rotate after the contents and the packaging material are loaded into the pocket at the loading position and the pocket enters the working section. And the fluid supply source communicate with each other to move one holding surface toward the contents in the pocket, and the contents jump out at a set pressure between the both holding surfaces and are trapped immovably. When it comes out to the carry-out position, the communication between the actuator and the fluid supply source is cut off by the control means, the content is not pinched, the content can be carried out from the pocket, and the fluid is supplied by the adjusting means. By adjusting the fluid pressure from the source to the control means, the movement amount changes to the contents of one holding surface of one pocket that sequentially enters the working section, and the holding pressure of the contents once. It is intended to be adjusted.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In this embodiment, as shown in FIG.
6 pockets 1 are radially connected to the outer periphery of the tip of the rotating shaft A1 of the turret A which rotates by 0 degree, and the box-shaped contents B in which 5 boxes are laterally stacked are not shown in the drawing. By abutting it on a thermoplastic encapsulating material C such as cellophane or polypropylene that has been drawn out in the up and down direction, the encapsulating material C moves along the upper and lower surfaces B1 and B2 and the front end surface B3 of the content B. Both ends C1 and C2 of the encapsulating material C protruding from the pocket 1 while being pushed into the pocket 1 that stops at the carry-in position P1 while being wound in a letter shape, and then moving the working section P2 by the intermittent rotation of the turret A thereafter. Is carried out by welding, and after it arrives at the carry-out position P3, it is pulled out toward the subsequent process by the carry-out pusher 9 as shown in FIG.

Each pocket 1 has a pair of holding surfaces 1a and 1b facing the upper and lower surfaces B1 and B2 of the content B loaded at the loading position P1 and an abutting surface 1c facing the tip surface B3.
And a pair of sandwiching surfaces 1d, 1d facing the left and right side surfaces B4, B4, respectively, and one pair of sandwiching surfaces 1a, 1b,
Either 1d or 1d, the carrying-in position P1 in this embodiment.
Holding surface 1a facing the lower surface B2 of the contents B carried in by
Each of them is reciprocally supported so that the base end thereof can be swung in the direction toward and away from the contents B in the pocket 1 as shown in the figure. The actuators 2 are connected in series.

The actuators 2 are constituted by, for example, an air cylinder that expands and contracts by compressed air supplied from a fluid supply source 3 such as a compressor, or a hydraulic cylinder that expands and contracts by hydraulic pressure supplied from a fluid supply source 3 such as a hydraulic pump. The movable reciprocating clamping surfaces 1a are moved toward the opposing clamping surfaces 1b, respectively. Preferably, an air cylinder whose control and equipment are simple is used.

In the case of the present embodiment, from the sandwiching surface 1a which is reciprocally movable to the sandwiching surface 1b of the pocket 1 which is adjacent to the sandwiching surface 1a.
.. are respectively installed over the air cylinders 2, and compressed air is supplied to the air cylinders 2, ... From a fluid supply source 3 via a control means 4 to be described later, thereby sandwiching the sandwiching surfaces 1a. By moving toward the surface 1b side to press the contents B in the pocket 1 at a set pressure, and the supply of the compressed air from the fluid supply source 3 via the control means 4 is stopped, the air cylinder 2 ... The holding surfaces 1a ... Are slightly moved to the opposing holding surface 1b .. side by a weak force of a spring (not shown) incorporated therein, and the contents B are held in and out of the pockets 1 ...

Further, from the rotary shaft A1 of the turret A on which the pockets 1 are integrally projected to the non-rotatable support holder A2 which pivotally supports the rotary shaft A1, a broken line and a diagram of FIG. As shown in FIG. 2, except for the actuators 2 and 2 of the pockets 1 and 1 located at the carry-in position P1 and the carry-out position P3, respectively, the actuators 2 of the pocket 1 located in the work section P2 from the carry-in position P1 to the carry-out position P3 are ... And a control means 4 for communicating the fluid supply source 3 with each other.

The control means 4 connects the rotary shaft A1 of the turret A to the actuators 2 ... Supply passages 4a.
Of the support holder A2 facing each other toward the support holder A2 such that their ends are arranged at equal intervals in the circumferential direction along the outer peripheral surface of the rotating shaft A1. A concave portion 4b is formed in the circumferential surface so as to be partially continuous in the circumferential direction along the outer peripheral surface of the rotation axis A1. Supply passages 4a, 4a for communication
Except the end of the supply passage P1 from the carry-in position P1 to the carry-out position P3, the compartments are formed at positions corresponding to only the ends of the supply passages 4a ... 3 and the supply pipe 3a are always connected.

Further, as an adjusting means 5 for adjusting the pressure of a fluid such as compressed air, which is supplied from the fluid supply source 3 to the concave portion 4b of the control means 4, as shown in FIG. 2, in the middle of the supply pipe 3a, for example. Provide a pressure regulating valve.

The end face B5 of the contents B in the pocket 1 rotates between the carry-in position P1 and the position at which each pocket 1 stops next around the pockets 1 located in the working section P2. The fixed guides 6 are arranged along the moving path, and the folding guides 7a and 7b are opposed to one end C1 of the covering material C protruding from the pocket 1 near the next stop position.
And the other end C2 of the encapsulating material C protruding from the pocket 1 so as to face each other and the sealing heater 8a.
Is reciprocally disposed, and the sealing portion 8b is reciprocally disposed near the next stop position.

In the case of the present embodiment, the turret A as shown in FIG.
After the folding guides 7a are erected at the left and right ends of the one end C1 of the encapsulating material C deformed in the direction opposite to the rotation direction, the folding guides 7b are provided at the left and right central portions of the raised one end C1. The end C1 is folded along the end face B5 of the contents B by rocking and pushing it up so as not to interfere with the folding guide 7a.
Simultaneously with the return movement of b, the sealing heater 8a is moved and abutted against the other end C2, so that one end C already folded
The outer peripheral surface of the turret A is folded into the outer side of 1 and welded while being overlapped with each other. Heat or cool.

Next, the operation of such a packaging device will be described.

First, the pocket 1 stopped at the carry-in position P1 due to the intermittent rotation of the turret A is located at a position where the end of the supply passage 4a communicating with the actuator 2 thereof does not coincide with the recess 4b of the control means 4, so that the fluid A fluid such as compressed air is not supplied from the supply source 3, and the reciprocally movable holding surface 1a is slightly moved to the opposing holding surface 1b side by the weak force of a spring (not shown) built in the air cylinder 2. .

In this state, when the contents B are abutted against the covering material C and are pushed toward the pocket 1 at the carry-in position P1 as shown in FIG. The holding surface 1a, which is reciprocally movable with respect to the force, is pushed by the tip end surface B3 of the contents B and is pushed into a position where it comes into contact with the abutting surface 1c of the pocket 1.

As a result, the encapsulating material C is sandwiched between the tip surface B3 and the upper and lower surfaces B1 and B2 of the contents B, the abutting surface 1c of the pocket 1 and the pair of opposing sandwiching surfaces 1a and 1b, and at the same time. , B is also sandwiched between the left and right side surfaces B4, B4 of the contents B and another pair of sandwiching surfaces 1d, 1d, which are bent into U-shapes, and both ends C1, C2 thereof project from the pocket 1. .

After that, when the turret A starts to rotate and the pocket 1 enters the working section P2, the end of the supply passage 4a communicating with the actuator 2 thereof is aligned with the recess 4b of the control means 4 and the fluid supply source 3 is used, for example. A fluid such as compressed air is supplied, and the reciprocally movable holding surface 1a is moved toward the contents B in the pocket 1 and pops out at the set pressure and is immovably held.

In this state, the end surface B5 of the contents B in the pocket 1 and both ends C of the covering material C protruding from the end surface B5.
1 and C2 move along the arc guide 6, whereby both ends C1 and C2 of the encapsulating material C are once bent in the direction opposite to the rotation direction of the turret A, but when passing through the arc guide 6, the ends of FIG. As shown by the alternate long and short dash line, the restoring force of the encapsulating material C itself returns it to near the original projected state.

When the pocket 1 is stopped at the next stop position, the folding guide 7a raises one end C1 of the packaging material C which is deformed in the direction opposite to the rotation direction, and subsequently, one end C1 of the folding guide 7b is raised. The contents B are folded along the end surface B5, and then the sealing heater 8a is folded to the outside of the folded one end C1 and welded while being overlapped, and at the same time, the subsequent pocket 1 stopped at the carry-in position. As described above, the next contents B are carried into the.

When the pocket 1 to which both ends C1 and C2 of the encapsulating material C are temporarily fixed is rotated and stopped at the next stop position, both ends C of the encapsulating material C to which the sealing portion 8b is temporarily fixed.
1 and C2 are contacted with each other for a predetermined time to be welded again or cooled, and the body winding process is completed.

After that, when the pocket 1 rotates to come out of the working section P2 and reach the carry-out position P3, the end of the supply passage 4a communicating with the actuator 2 moves to a position which does not coincide with the recess 4b of the control means 4. As a result, the fluid supply such as compressed air is cut off from the fluid supply source 3, and the reciprocating holding surface 1a is held only by the weak force of a spring (not shown) built in the arc cylinder 2.

In this state, as shown in FIG. 3, if the contents B wrapped around the body are pushed to the opening side in the pocket 1 by the carry-out pusher 9, the contents B are pulled out from the inside of the pocket 1 and after the folding of the ears etc. It is pushed toward the process and the above-mentioned operation is repeated thereafter.

Further, the pressure of a fluid such as compressed air supplied from the fluid supply source 3 to the actuators 2, ... Is larger than necessary, and the reciprocating holding surfaces 1a.
When it is pressed too strongly against ... and is damaged, or conversely, the pressure of the fluid supplied from the fluid supply source 3 to the actuator 2 is too low, and the reciprocating clamping surface 1a ...
When the pressing pressure against the contents B ... Is insufficient to prevent the contents B ... from jumping out completely, the adjusting means 5 is operated to supply the fluid from the fluid supply source 3 to the concave portion 4b of the control means 4. If the pressure of the fluid to be adjusted is adjusted, all the actuators 2 ... of the pockets 1 ... Entering the work section P2 sequentially are adjusted at one time, and it is not necessary to perform adjustment work for each of these pockets 1 ...

In the embodiment shown above, both ends C of the encapsulating material C protruding from the pocket 1 by the intermittent rotation of the turret A.
1, C2 were folded and welded, but not limited to this,
The same applies to the case where the rectangular tubular ends of the encapsulating material C projecting from the side surfaces B4, B4 of the contents B are sequentially folded and welded, and the actuators 2, ... The configurations thereof are not limited to those described above, and other configurations may be used as long as they have the same function.

The contents B carried in at the carry-in position P1
Although only the sandwiching surface 1a facing the lower surface B2 of the above is supported so as to be reciprocally movable toward and away from the content B, the sandwiching surface 1b facing the upper surface B2 of the loaded content B is not limited to this. Each of which is reciprocally supported in the direction of contacting with or separating from the content B, or one of the other pair of clamping surfaces 1d and 1d facing the left and right side surfaces B4 and B4 is contacted with or separated from the content B, respectively. It may be supported so that it can reciprocate in any direction.

[0034]

Since the present invention has the above-mentioned structure, it has the following advantages.

After the contents and the encapsulating material have been loaded into the pocket at the loading position, the turret starts to rotate and the pocket enters the working section, so that the actuator and the fluid supply source communicate with each other by the control means. The gripping surface is moved toward the contents in the pocket, the contents pop out between the both gripping surfaces at a set pressure and are immovably sandwiched, and the pocket comes out of the working section to reach the carry-out position. The communication between the actuator and the fluid supply source is cut off by releasing the sandwiching of the contents, the contents can be carried out from the pocket, and the fluid pressure from the fluid supply source to the control means is adjusted by the adjusting means. As a result, the movement amount changes to the contents on one of the holding surfaces of the pockets that sequentially enter the work section, and the holding pressure of the contents is adjusted at once, so the turret It can be adjusted all the pocket at a time while preventing jumping out movement of the contents from the pocket with the rotation

Therefore, as compared with a case in which the contents are squeezed out between both holding surfaces with an elastic body such as a compression spring so as to be immovable, the quality can be maintained without damaging the contents and the adjustment work of each pocket can be performed easily. In addition, the structure is simpler and the cost is lower than the one in which the contents are loaded into the pocket by the cam, the contents are popped out and pinched immovably, and the contents are released immediately before the contents are discharged from the pocket. Not only does this reduce the size of the entire device, but it also simplifies the work of adjusting each pocket.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a packaging apparatus showing an embodiment of the present invention, showing a state where a turret is stopped to rotate.

FIG. 2 is a partially enlarged vertical side view taken along line (2)-(2) of FIG.

FIG. 3 is a partially enlarged vertical side view taken along the line (3)-(3) of FIG.

[Explanation of symbols]

A Turret B Contents C Encapsulating material P1 Carrying in position P2 Working section P3 Carrying out position 1 Pocket 1a Reciprocating one clamping surface 1b Other clamping surface 2 Actuator 3 Fluid supply source 4 Control means 5 Adjusting means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuyoshi Washizu 4-12-62 Higashi-Shinagawa, Shinagawa-ku, Tokyo Japan Tobacco Inc.

Claims (1)

[Claims] 1. A plurality of pockets are radially provided on the outer circumference of a rotatable turret, and box-shaped contents and an wrapping material wrapped around the box-shaped contents are sequentially carried into these pockets, and the turret is rotated while being rotated. In a packaging device that folds the packaging material along the contents in the pocket and successively carries out the contents after folding from the pocket, either one of a pair of sandwiching surfaces facing each other with the contents of each pocket sandwiched therebetween. The actuators that reciprocally move toward and away from the contents and that move the reciprocating nipping surfaces toward the contents are connected in series, and the loading position at which the contents are loaded into each pocket and Activating the pockets located in the work section from the carry-in position to the carry-out position, except for the actuators of the pockets located at the carry-out position where the contents are carried out from each pocket. The control means for communicating only the user and the fluid supply source are connected to the pockets of the turret respectively, and the adjusting means for adjusting the fluid pressure from the fluid supply source is provided in the supply path from these fluid supply sources to the control means. A packaging device characterized by that.