JPS6159967B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention is an apparatus for compressing a laminated part of a printed matter such as a newspaper and wrapping it in a film,
In particular, the present invention relates to a high-speed compression packaging device for laminates that makes the package look beautiful and can be packaged at high speed.

``Prior Art'' Laminated printed materials such as newspapers are very different from simply stacked sheets of flat paper.

A typical example is the one on page 24 of the morning edition.
A 100-part stack is shown in FIG. This is 6 sheets of newspaper folded into 4, which is 25
They are stacked in different directions and fed into the packaging machine from the direction of the arrow. In this laminate, the heights of points A and D are usually high, and the heights of points B and C are about 60 mm higher than this. , the height of point B′ and point C′ is approximately
100mm. It is getting worse.

Such laminates are likely to collapse if the speed is suddenly changed during transfer. Further, surfaces f and f' are surfaces on which the folded portions are stacked, and surfaces g and g' are surfaces on which newspapers are stacked one by one. When the newspaper is fed into the packaging machine with side g where it is stacked one sheet at the front, point A is called the cut corner, but during the packaging, the film for the packaging is As a result, the area near the cutting edge corner is bent, resulting in a defective package.

The same thing can be said about the case where the laminate is sent in the opposite direction.

To prevent this, there is a method disclosed in Japanese Patent Publication No. 47-9713. That is, the laminate is first covered with a film and then compressed from above to weld and cut the film. This causes the film to loosen on the front of the laminate, making the packaging look unsightly, and also prevents the load from collapsing when the laminate starts and stops being transferred.
For this reason, it is impossible to speed up packaging.

Furthermore, most of the conventional packaging machines of this type are provided with a compression conveyor that can be raised and lowered back and forth, as shown in Japanese Patent Publication No. 47-2392, for example, and a film and a welding/cutting device therebetween are provided.

Then, on the compression conveyor in front of the film, first,
The laminate is compressed and transferred towards the film, but the top of the front end of the laminate, especially the cutting corner,
As it moves away from the compression conveyor, it expands and becomes taller, and then it is covered with a film and placed under the compression conveyor at the rear. At this time, the second half of the laminate is compressed by the front compression conveyor, and the first half is simply covered with a film, so when it enters the rear compression conveyor, it is bent near the cutting corner.

In order to avoid this, the rear compression conveyor is placed a little higher, but even this cannot completely eliminate the bending of the cutting edge corner, and making the compression conveyor higher means that more film is wasted. This also results in a disordered appearance when the compression is released after packaging is complete.

``Problems to be Solved by the Invention'' The present invention aims to solve the following problems: When film-wrapping a laminate of printed materials such as newspapers, the laminate was conventionally bent near the cut corners, resulting in defective packaging. In many cases, the packaging is not very beautiful.
Furthermore, in view of the fact that it was difficult to wrap film in a highly efficient manner, we attempted to improve this by completely preventing the bending of the cutting edge corner and creating a beautiful product without causing the load to collapse. It is intended to enable highly efficient packaging.

"Means for Solving the Problems" The present invention provides a method in which a first conveyor and a second conveyor that intermittently transport the laminate are arranged in parallel, a compression device is provided above the first conveyor so that it can be raised and lowered, and the A second upper conveyor is provided above the second conveyor so that it can be raised and lowered, and between the first conveyor and the second conveyor, the film fed out by the upper and lower film feed rollers is stretched, and an upper sealer is placed in front of the second conveyor. In a packaging device in which a lower sealer is removably provided, a pressing plate is provided on the lower surface of the compressing device, and this pressing plate moves forward from the lower surface of the compressing device to move along with the compressed laminate as it advances. It is designed so that it can be moved easily.

Further, in order to be able to move the pressing plate as described above, the compression device is provided with a horizontally movable body that can be moved in the front and back direction, and the rear end of the pressing plate is pivotally connected to this horizontally movable body with a pin. It is.

Furthermore, the present invention provides the packaging device as described above, wherein a pressing plate is provided on the lower surface of the compression device, and the rear end of this pressing plate is attached to a horizontal moving body provided on the frame of the device so as to be movable in the front and back direction. It is pivoted with a pin, and one end of the roller chain is fixed at the rear of the horizontal moving body.

The roller chain spans between a sprocket attached to the rear of the frame and a sprocket attached to a movable body that is inserted into a guide rod fixed to the frame facing forward.

The end portion is fixed to the frame, and the protruding portion of the movable body and the piston rod of the air cylinder attached to the frame are placed in corresponding positions.

"Operation" The compression device is lowered from above the first conveyor to compress the laminate.

When both the first and second conveyors are driven and the laminate moves forward, only the press plate of the compression device unites with the laminate and moves forward while clinging to it.

The front part of the press plate is covered with the laminate by the film fed out from above and below the transition path, passes between the upper and lower sealers, and reaches the bottom of the second upper conveyor.

Here, the protrusion of the moving body comes into contact with the piston rod of the air cylinder, and the pressing plate is moved back.

Then, the pressing plate retreats while lightly contacting the upper surface of the laminate.

Subsequently, the second upper conveyor descends, covering the front part of the stack with a film and pressurizing it together with the film.

The rear end of the laminate is then welded and cut by upper and lower sealers, and the laminate wrapped in this film is discharged forward.

To wrap a laminate with a film, as described above, the top surface of the laminate is pressed with a pressure plate, and the pressure plate is moved back while lightly pressing the top surface of the laminate, and the laminate is covered with a film and wrapped. If the cut corner of the laminate is cut into a film or
The film can be wrapped smoothly without being bent by the pressure of the upper conveyor.

``Embodiment'' This will be explained in detail with reference to the drawings showing an apparatus according to an embodiment of the present invention.

In Fig. 2, 1 is a frame, 2 is a first conveyor that is driven intermittently, 3 is a compression device that can be raised and lowered, 4 is a laminate, and 5 is a shutter that correctly positions the front of the laminate 4 that is being advanced. They are meant to be aligned, and once aligned, they open left and right.

6 is a film fed out from above, 6' is a film fed out from below, 8 and 8' are rolls of the film, 8a and 8a' are preliminary film rolls, and 13 and 14 are feeding rollers for each film.

Reference numeral 16 denotes an intermediate roller that can swing around the axis of the feed roller 14, and a belt 17 is stretched between the intermediate roller 16 and the feed roller 14.
Reference numeral 19 denotes a guide roll for the film 6, which is raised and lowered together with the upper sealer 20 when it is raised and lowered by the air cylinder 21.

22 is a lower sealer that is raised and lowered by the operation of an air cylinder 23. When the lower sealer 22 moves up and down, the intermediate roller 16 swings upward.

24 is a second conveyor that is driven intermittently; 25
A second upper conveyor is paired with this and can be moved up and down.

The compression device 3 described above will be described in detail with reference to FIGS. 8 and 9.

Reference numerals 31 and 31 are guide rods fixed to the frame 1, and 32 is a rack fixed inside the guide rods.

Reference numeral 33 denotes a frame body with support plates 34, 34 hanging down from both ends thereof. A penetrating shaft 35 is rotatably provided on this frame body 33, and pinions 36, 36 are attached to both sides of the same shaft 35.
This pinion 36 meshes with the rack 32. The outer annular body 37 of the pinion 36 and the roller 38 attached below the support plate 34 are loosely fitted into the groove of the guide rod 31.

A connecting head 40 is attached to the middle part of the fixing pin 39 of the roller 38, and the upper end of a piston rod 41 of an air cylinder (not shown) is screwed onto this connecting head 40. As a result, the frame body 33 is raised and lowered horizontally by the operation of the air cylinder.

Brackets 43, 43 are fixed at right angles to the frame 33, and guide rods 44, 44 are horizontally fixed to the lower part of the bracket 43 from front to back.

A boss portion 45a provided on a horizontal moving body 45 equipped with a ball bushing that can be easily moved by rolling friction is loosely fitted to the rear of the guide rods 44, 44. Pins 46, 46 are attached to the left and right rear ends of the horizontal moving body 45, and support plates 47, 47 are pivotally connected to the pins 46.

The support plates 47, 47 are fixed to and integral with the pressing plate 48.

Reference numerals 51 and 51 are springs, and as shown in FIG. do.

That is, the pressing plate 48 is always lightly lifted in the upward direction by the springs 51, 51 with the pins 46, 46 as fulcrums, and the upper surface of the pressing plate 48 is rotatable to the front lower end of the brackets 43, 43. The horizontal position is set by lightly contacting the rollers 52 supported by the rollers 52 .

Reference numeral 53 denotes an intermediate bracket provided at the rear of the intermediate portion of the frame body 33, and a sprocket 54 is pivotally supported at the lower end of the intermediate bracket.

Reference numeral 59 denotes a guide rod for a ball spline attached to an L-shaped support plate 57 protruding from the lower middle of the frame 33 and a support plate 60 fixed to the front ends of the brackets 43, 43; 58 a guide rod; This is a moving body for a ball spline fitted on a rod 59.

55 is a sprocket pivotally mounted on the side of the movable body 58, and the lower end 56'' of the roller chain 56 is fixed to the horizontal movable body 45, and is extended over the sprocket 54 and the sprocket 56 to extend above the sprocket. The end 56' of is fixed to an L-shaped support plate 57.

That is, the roller chain 56 spans the sprocket 54 and the sprocket 55 in an S-shape.

Reference numeral 58' denotes a protrusion provided on the opposite side of the movable body 58 from the side on which the sprocket 55 is attached, and is located at a position where it comes into contact with the piston rod 62 of the air cylinder 61 attached to the L-shaped support plate 57.

That is, as will be described in detail later, when the pressing plate 48 presses the laminate 4 and advances as the laminate 4 advances as shown by the dashed line in FIG. 9, the end 56 of the roller chain 56 '' forward, the movable body 58 moves backward along the guide rod 59 together with the sprocket 55.The movement is one half of the forward distance of the press plate 48, and the moving body 58 moves backward along the guide rod 59 together with the sprocket 55.
While moving forward, the piston rod 62 can move easily without being interfered with. When the pressing plate 48 moves as shown by the dashed line in FIG.
8' is the piston rod 6 of the air cylinder 61
Contact with 2. Note that instead of extending the roller chain 56 in an S-shape as shown in the figure, it may be formed into a horizontal U-shape, and instead of the air cylinder 61 and piston rod 62, a motor can be used to rotate the screw to create a movable body. 58 can also be restored.

Its action will be explained in detail.

FIG. 3 shows a state in which the compression device 3 has descended from above the first conveyor 2 to compress the laminate 4, and the tip 48' of the pressing plate 48 is slightly protruding from the front surface of the laminate 4. Compress. During the pressurization, the shutter 5 is opened left and right.

To lower the compression device 3, an air cylinder (not shown) is operated to lower the piston rod 41 and the frame 33. When the compression is completed, both the first and second conveyors 2, 24 and the delivery rollers 13, 14 of the films 6, 6' are simultaneously driven, and the laminate 4 is advanced. As the pressing plate 48 moves forward, the pressing plate 48 automatically moves forward integrally therewith.

The front part of the pressing plate 48 passes through between the upper and lower sealers 20 and 22 while being covered with the films 6 and 6', and as shown in FIG.
Reach below 5. The stack 4 is in a state spanning the first conveyor 2 and the second conveyor 24, and the second upper conveyor 25 is waiting at a position slightly higher than the pressing plate 48.

At this time, as explained earlier, the movable body 58 moves rearward, and its protrusion 58' comes into contact with the piston rod 62 of the air cylinder 61.

Next, as shown in FIG. 5, in order to release the pressure applied by the pressing plate 48, the piston rod 41 is raised and the compression device 3 is raised.

At a slightly delayed timing, the press plate 48
to retreat. That is, the air cylinder 61
The end 56'' of the roller chain 56 moves the horizontal moving body 45 and the press plate 48 integrated therewith back at twice the speed by operating the piston rod 62 of the moving body 58 and pushing the protrusion 58' of the moving body 58 forward. .

At this time, the rear fulcrum of the press plate 48, that is, the pin 46, rises rapidly due to the rise of the piston rod 41.
8' is left behind due to inertia, and as shown by the two-dot chain line in FIG. 9, it leans forward and retreats while lightly contacting the upper surface of the laminate 4.
(In this case, the lifting force of the springs 51, 51 is extremely small as mentioned above.) The coefficient of friction between the tip 48' of the pressing plate 48 and the laminate 4 is greater than the coefficient of friction between the laminates 4. Since it is small, retraction of the tip 48' will not cause the load to collapse.

Subsequently, the second upper conveyor 25 is lowered to cover the front portion of the stacked product 4 with the films 6, 6' and pressurize them together with the films 6, 6'. (6th
(See figure) In other words, press the corner of the cut end of the laminate 4 on the pressing plate 4.
The laminate 4 is coated with the films 6, 6' while being lightly pressed with the tip 48' of the laminate 4, and the film coating is carried out without giving the laminate 4 time to expand.

In Figure 7, the rear end of the laminate 4 is the upper and lower sealer 2.
The state when the second conveyor 24 and the second upper conveyor 25 have stopped after passing between 0 and 22,
At this time, the intermediate roller 16 is retracted upward to form a passage for the lower sealer 22.

The rear ends of the films 6, 6' are welded and cut by upper and lower sealers 20, 22, and the packaged laminate 4 is discharged forward. During the welding and cutting operation, the next laminate 4 to be packaged is fed onto the first conveyor 2 .

"Effects of the Invention" As described above, when compressing and film-wrapping a laminate of printed materials such as newspapers, the compression device compresses the laminate as it moves forward. The plate also moves forward automatically, and as the laminate advances, its front part is covered with a film, and when the pressing plate retreats as the compression device rises, the cutting edge of the laminate is lightly pressed and protected by this pressing plate. Since this is covered with a film at the same time, there is no possibility that the corner portion of the cutting edge is bent by the pressure of the film or the second upper conveyor.
In addition, since the laminate compressed by the compression device is pressed by the second upper conveyor, it will not expand again when the pressure of the compression device is released, so there will be no waste on the surface of the film, and the first
It is possible to perform beautiful film packaging without causing any collapse of the load when the conveyor is driven again, and the time required to transfer the stacked materials can be greatly shortened.

In addition, by pivoting the rear end of the press plate to the horizontal moving body with a pin, the press plate can take a forward tilting position when it retreats, making the cooperative operation between the press plate and the second upper conveyor even faster. Moreover, it is possible to completely eliminate the disturbance of the laminate due to the retreat of the pressing plate.

Furthermore, since the pressing plate is moved back by the actuation of the piston rod of the air cylinder in conjunction with the roller chain, the structure of the compression device is simplified and can be made compact.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a standard laminate, Fig. 2 is a front view of the entire device, Fig. 3 is a front view of the same laminate being compressed by the compression device, and Fig. 4 is the same laminate. Fig. 5 is a front view when the object is being moved forward, Fig. 5 is a front view when the compression device is raised and the press plate is being moved back, Fig. 6 is a front view when the object has finished rising, and Fig. 7 is a front view when the object is being moved forward. Figure 8 is a front view of the laminate being pressed by the second upper conveyor, Figure 8 is a perspective view of the main parts of this device, Figure 9 is
The figure is a side view thereof. 2...First conveyor, 3...Compression device, 4...
...Laminated product, 6,6'...Film, 13,14...
... Film feed roller, 20 ... Upper sealer, 22 ... Lower sealer, 24 ... Second conveyor, 25 ... Second upper conveyor, 33 ...
Frame body, 45... Horizontal moving object, 46... Pin, 48...
...Press plate, 54, 55... Sprocket, 56...
...Roller chain, 58...Moving body, 58'...
...Protrusion, 59...Guide rod, 61...Air cylinder, 62...Piston rod.

Claims (1)

[Scope of Claims] 1. A first conveyor and a second conveyor for intermittently transporting the laminate are installed in parallel, and a compression device is provided above the first conveyor so as to be movable up and down, and a second conveyor is provided above the second conveyor. An upper conveyor is provided that can be raised and lowered, and the film sent out by the upper and lower film delivery rollers is stretched between the first conveyor and the second conveyor, and the upper sealer and lower sealer can be moved in and out in front of the conveyor. A high-speed compression packaging device for laminates, in which a pressing plate is provided on the lower surface of the compression device, and the pressing plate can be moved along with the laminate compressed by the compression device by moving forward. . 2. A high-speed compression packaging device for laminates according to claim 1, wherein the compression device is provided with a horizontal movable body that is movable in the front and rear directions, and the rear end of the pressing plate is pivotally connected to the horizontal movable body with a pin. 3 A first conveyor and a second conveyor that intermittently transport the laminate are installed in parallel, a compression device is provided above the first conveyor so that it can be raised and lowered, and the second conveyor is installed in parallel.
A second upper conveyor is provided above the conveyor so that it can be raised and lowered, and between the first conveyor and the second conveyor, the film sent out by the upper and lower film delivery rollers is stretched, and in front of it is an upper sealer and a lower part. In a packaging device in which a sealer is removably installed, a pressing plate is provided on the lower surface of the compression device, and the rear end of this pressing plate has a pin attached to a horizontal movable body provided in the frame of the device so as to be movable in the front and back direction. One end of the roller chain is fixed to the rear of the horizontal moving body, and this roller chain is connected to the moving body which is inserted into a sprocket attached to the rear of the frame and a guide rod fixed to the frame facing forward. High-speed compression packaging of a laminate, which is wrapped around an attached sprocket, its end is fixed to a frame, and the protrusion of the moving body and the piston rod of an air cylinder attached to the frame are placed in corresponding positions. Device.