JP2520023Y2 - Laminate compression transfer device for newspapers - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for compressing and transporting a stack of stacked newspapers and magazines.

[0002]

2. Description of the Related Art For example, when a newspaper is shipped, a predetermined number of copies are stacked to form a bundle (batch), and a stacking step for stacking a plurality of the bundles to form one packaging object, and a packaging process. Addressing process of laying protective paper on each object and attaching a delivery slip with the address printed according to the shipping destination, packaging process of covering the above packaging object with protective paper and delivery slip, and packaging film The packaging is performed through a binding process in which a band is applied to the outer surface of the cross in a cross shape.

[0003] In the stacking step, the stack of newspapers is usually compressed from above and below to reduce its volume. By doing so, the amount of the packaging film used in the next step can be reduced, and the load is less likely to collapse in the batch during transfer, and high-speed transfer can be realized.

[0004] By the way, as a transfer device for compressing and transferring the above-mentioned newspaper laminate, a conventional device, for example, Jpn.
As disclosed in Japanese Patent Publication No. 26, etc., there is known one provided with a transfer conveyor for mounting and transferring a stacked product, and a compression mechanism arranged above the transfer conveyor so as to be able to move up and down. In this one, the compression mechanism is a lifting platform that can move up and down,
A flat belt is wound around an elevating device that drives the elevating table up and down, and two rollers that are supported by the elevating table and that are opposed to each other in the transfer direction. It has a pressure conveyor to run, and the stack of newspapers is compressed between the upper and lower conveyors and is transferred to the next step by the operation of both conveyors.

[0005]

However, the folded side end portion of the folded newspaper is bulged and bulkier than the non-folded side end portion, and as shown in FIG. It is inevitable that W has a recessed central portion and both end portions are raised even if the folding side end portion and the non-folding side end portion are changed with a certain number of copies. In particular, when the fold side end of the uppermost newspaper is on the rear side in the transport direction, as shown by the phantom line in the figure, the front non-fold side end is likely to be rolled backward. is there. Then, if the pressure conveyor descends as it is, the front end of the uppermost newspaper may be folded or wrinkled, and the value of the product becomes low.
In addition, in FIG. 6, reference numeral 31 is a conveyor for mounting and conveying the laminate W.

The present invention has been made in view of the above problems, and an object thereof is to improve a pressurizing structure of a pressurizing conveyor for a laminate so that a fold or a wrinkle is formed on a newspaper or the like at the top of the laminate. It is about trying to effectively prevent the occurrence of lag.

[0007]

In order to achieve the above object, in the invention of claim 1, the lower part of the pressure conveyor is held in a shape corresponding to the upper surface of the laminate in the initial state of compression, and the compressed state is completed. Then, the reaction force from the laminate was used to deform it into a flat surface.

That is, according to the present invention, there is provided a carrier conveyer for mounting and carrying the laminate, and a compressing unit arranged above the carrier conveyer so as to be able to move up and down. An elevating means for elevating and lowering the elevating table, and a pressure conveyer supported by the elevating table and rotating a roller by the driving means in a lowered state of the elevating table to cause a lower part of the conveyor belt to travel in the same direction as the transport conveyor Have and. This pressure conveyer comprises a pair of fixed rollers that are arranged vertically and immovably at a substantially same height position facing each other in the transfer direction of the laminate, and between the fixed rollers and below the fixed rollers. At least one movable roller that is vertically movable at a position, a biasing unit that biases the movable roller downward, and a belt upper portion between the fixed rollers that is biased downward to apply tension to the belt. And a tensioning means for controlling.

[0009]

With the above construction, in the device according to the first aspect, when the laminate conveyed from the previous step is stopped on the conveyer conveyor, the elevating means is operated to lower the elevating table and lower the conveyor belt of the pressure conveyor. Presses the upper surface of the laminate to compress the laminate up and down, and in this compressed state, it is transferred to the next step by the operation of both the mounting and the pressure conveyor.

At this time, the movable roller located in the middle of the pressure conveyor in the transfer direction is urged by the urging means,
Since it is located below both fixed rollers located at the front and rear ends in the transfer direction, the lower part of the conveyor belt wrapped around each roller in the initial state of the above-mentioned compressed state corresponds to the concave shape of the upper surface of the laminate. It becomes a convex shape. Then, as the compression progresses, the movable roller receives the reaction force from the laminate and rises together with the intermediate portion of the lower belt against the urging force of the urging means, while the fixed roller side portion of the lower belt moves. The both front and rear ends of the laminate are pressed, and when the compression is completed, the fixed and movable rollers press the laminate in a balanced manner, and the upper surface of the laminate is pressed to a substantially flat surface. Therefore, even if the top surface of the stack has a special shape, the stack is compressed so that the upper end surface becomes a substantially flat surface without being deformed from the original shape, and the stack is located above the stack. The edge of a newspaper or the like is surely restricted from being turned, and the folds and wrinkles can be effectively prevented. At that time, since the upper part of the belt is pressed by the tension mechanism, even if the movable pulley is raised, the slack of the belt accompanying it is absorbed by the tension means and the tension of the belt is secured, and the transfer operation of the pressure conveyor is performed. Can be maintained.

Further, since the laminate is transferred to the next step while being compressed by the pressure conveyer, the compression effect of the laminate can be obtained and the collapse of the laminate can be prevented, and the transfer speed of the conveyor can be increased. Can be raised. Moreover, since it is not necessary to return the elevating table and the pressurizing conveyor to the raised position, the transfer tact can be shortened, and high-speed compression transfer can be realized.

[0012]

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

FIG. 1 shows the overall structure of a laminate compressing and transferring apparatus according to Embodiment 1 of the present invention. This compressing and transferring apparatus is used in a stacking process for compressing the laminate W at the shipping stage of newspapers. In the figure, 1 is a conveyor that is installed on the floor or the like in the stacking process, and has a conveyor belt 4 that is stretched between front and rear pulleys 2 and 3,
On this belt 4, a stack W of a predetermined number of newspapers stacked is placed and conveyed, for example, from left to right in the figure.

Above the transfer conveyor 1, a laminate W is formed.
Is provided with a compression mechanism 5 for compressing. The compression mechanism 5 has an elevating table 6 that can be moved up and down, and the elevating table 6 is attached and supported by a machine frame (not shown) by a cylinder 7 as an elevating means. That is, the cylinder 7 has a vertical axis, and the cylinder body 8 is fixed to the machine frame. From this cylinder body 8 to the piston rod 9
Extends downward and its lower end is connected to the central portion of the lift 6. The lower ends of a plurality of guide rods 10, 10, ... Arranged symmetrically with the cylinder 7 are fixed to the periphery of the lift 6 and the guide rods 10 are slidably supported by the machine frame. Then, the elevating table 6 is moved up and down by the expansion and contraction operation of the cylinder 7, and the stack W is compressed in the lowered state of the elevating table 6.

The lifting table 6 is provided with a pressure conveyor 11 for pressing and transferring the laminate W. The pressure conveyor 11 has a pair of frames 12 and 12 vertically provided on the left and right side edges of the lifting table 6 in a direction orthogonal to the transfer direction, and the first to fifth frames 12 and 12 are provided between the frames 12 and 12. The five rollers 13 to 17 are respectively shafts 13a to 17a in the left-right direction.
It has been installed by. The first rollers 13 are both frames 1
2, 12 between the upper portions of the front ends in the transfer direction, and the second roller 1
4 is installed between the upper portions of the rear ends in the same transport direction, and the heights of both rollers 13 and 14 are the same. The shafts 13a and 14a of these rollers 13 and 14 are the frame 12
It is supported so that it cannot move up and down, and the rollers 13 and 14 constitute a fixed roller.

On the other hand, the third and fourth rollers 15 and 16 are both arranged between the first roller 13 and the second roller 14 symmetrically with respect to the front-rear center position in the transfer direction. As shown in FIG. 2, the shafts 15a and 16a of the third and fourth rollers 15 and 16 are provided with respect to the frame 12, respectively, and have bearing holes 18 and 19 that are long holes formed in the frame 12 and elongated in the vertical direction. It is slidably inserted in and is supported so as to be vertically movable by a predetermined stroke. The bearing holes 18 and 19 are at the same height position, and the rollers 15 and 16 have the first stroke at the upper stroke end thereof.
And the second rollers 13 and 14 are at substantially the same height, and at the lower stroke end, they are positioned lower than both rollers 13 and 14, and the third and fourth rollers 15 and 16 are It constitutes a movable roller that can move up and down.

The third and fourth rollers 15 and 16 are also provided.
Springs 20 are respectively extended between the ends of the shafts 15a and 16a projecting to the outside of the frame 12 and the outer surface of the frame 12 below the ends. Fourth rollers 15, 16
Is normally urged downward so that it is located at the lower stroke end.

A conveyor belt 21, which is an endless flat belt, is wound around the first to fourth rollers 13 to 16, and therefore the third and fourth rollers 15 and 16 are provided.
At the lower stroke end, the belt 21 is developed in an inverted trapezoidal shape when viewed from the left and right sides.

The shaft 17a of the fifth roller 17 is provided on the frame 12 with respect to the third and fourth rollers 15 and 16.
Similarly, it is slidably inserted in a bearing hole 22 formed in the frame 12 and formed of a long hole extending in the vertical direction, and is supported so as to be vertically movable by a predetermined stroke. The fifth roller 17 has a shaft 17 at its lower stroke end.
The position of a is located slightly lower than the positions of the first and second rollers 13 and 14. Further, a spring 23 is extended between the end of the shaft 17a of the fifth roller 17 protruding outside the frame 12 and the outer surface of the frame 12 below the end, and the fifth roller 17 and the spring 23 are provided. The tension mechanism 24 is configured by the spring mechanism 23, and the spring 23 of the tension mechanism 24 constantly urges the fifth roller 17 toward the lower stroke end.
The upper part of the conveyor belt 21, that is, the slack side span is pressed to apply tension to the belt 21.

Further, the above-mentioned first, third to fifth rollers 1
3, 15 to 17 are respective shafts 13a, 15a to 17a
Although it is supposed to be rotatable via bearings,
The second roller 14 is rotatably connected to a shaft 14a which is rotatably supported by the frames 12 and 12 by bearings, and a driven pulley 25 is attached to one end of the shaft 14a. A drive motor 26 is fixed to the upper surface of the lifting table 6 at the rear end in the transfer direction.
A transmission belt 28 is stretched between the drive pulley 27 attached to a and the driven pulley 25, and when the cylinder 7 is extended and the lift table 6 is lowered, the drive motor 26 operates to convey the conveyor. The lower part of the belt 21 is made to run in the same direction as the transfer conveyor 1, that is, in the transfer direction.

Next, the operation of the above embodiment will be described. In the non-actuated state, the cylinder 7 of the compression mechanism 5 is contracted, and the lift table 6 is in the raised position. As shown in FIG.
When the newspaper stack W is carried into the stacking position by the transport conveyor 1, the stack W is temporarily stopped on the transport conveyor 1. After this stop, as shown in FIG. 4, the cylinder 7 extends and the lifting table 6 moves down, and the lower part of the conveyor belt 21 of the pressure conveyor 11 on the lower surface of the lifting table 6 is on the upper surface of the laminate W. Upon contact, the laminate W is vertically compressed between itself and the transport conveyor 1, and the volume thereof is reduced. In this state, the transport conveyor 1 restarts the transport operation, the drive motor 26 of the pressure conveyor 11 operates, the belt 21 travels between the rollers 13 to 17, and the laminate W is compressed by the both conveyors 1 and 11. It is transferred to the next process (addressing process, packaging process) as it is. Also, after this, the cylinder 7 contracts and the lift table 6 returns to the raised position,
Prepare for the next compression transfer of the laminate W.

In this embodiment, in the pressure conveyor 11, the third and third rollers 1 located in the middle of the transfer direction.
5, 16 (movable rollers) are springs 20, 20, ...
Is urged toward the lower stroke end by the roller, and is positioned below the first and second rollers 13 and 14 (fixed rollers) located at the front and rear ends in the transfer direction. 21 has a middle convex shape (span on the tension side), which corresponds to the middle concave shape of the upper surface of the laminate W. As the compression of the laminate W progresses due to the extension operation of the cylinder 7, the third and fourth rollers 15, 16 receive a reaction force from the laminate W and resist the biasing force of the springs 20, 20 ,. As a result, it rises from the lower stroke end, and the intermediate portion of the tension side span, which is the lower portion of the belt 21, also rises accordingly. At the same time, the front and rear portions of the span on the tension side of the belt 21, that is, the portions on the side of the first and second rollers 13 and 14 are the laminate W.
When the compression is completed, all of the first to fourth rollers 13 to 16 press the upper surface of the laminate W in a well-balanced manner, whereby the upper surface of the laminate W is substantially flat. Pressure is applied to the surface (see Figure 4). Therefore, the laminate W
Even if the upper surface of the laminate has a special concave shape, the laminate W is compressed so that the upper end surface thereof becomes a substantially flat surface without breaking the original shape. As a result, even if the newspaper on the upper part of the laminate W has an end portion that tends to curl, the curling can be surely suppressed,
It is possible to effectively prevent folds and wrinkles from occurring in the topmost newspaper, and prevent the commercial value of the newspaper from decreasing.

At this time, the upper part (slack side span) of the conveyor belt 21 is the fifth roller 1 of the tension mechanism 24.
Since it is always pressed downward by 7, even if the third and fourth pulleys 15 and 16 rise and the belt 21 is about to loosen, the fifth roller 17 causes the spring 2 to move.
It is moved downward by the urging force of 3, and the slack of the belt 21 is absorbed by this. As a result, the tension of the conveyor belt 21 is always secured, so that the transfer operation of the pressure conveyor 11 can be maintained.

Further, since the laminate W is transferred to the next step while being compressed by the pressure conveyor 11, the compression effect of the laminate W is sufficiently maintained, and the use of the packaging film in the next packaging step is correspondingly maintained. The amount can be reduced.

Further, by transferring the laminate W while it is compressed, it is possible to effectively prevent the stack W from collapsing during the transfer, and to increase the transfer speed of the conveyor 1.
Moreover, since the elevating table 6 and the pressure conveyor 11 are not returned to the raised position before the transfer, the waiting time is unnecessary and the transfer tact can be shortened. By these, high speed compression transfer can be realized.

FIG. 5 shows the second embodiment. In the first embodiment, one of the third and fourth pulleys 15 and 16 constitutes a movable pulley, while the other one of the pulleys 15 and 16 (in the figure, The fourth pulley 16) is eliminated, and the other (third pulley 15) is arranged at the front-rear center position as a movable pulley, and the belt 21 is developed into a substantially inverted triangular shape when viewed from the left and right sides. Even in this case, the same effect as that of the first embodiment can be obtained.

In each of the above-mentioned embodiments, the case where the laminate W of newspapers is compressed and transferred has been described, but the present invention can be used, of course, when compressing and transferring magazines and other laminates. .

[0028]

As described above, according to the first aspect of the invention, when the laminate is compressed and transferred on the conveyor, the compression means is composed of a pressure conveyor composed of a belt conveyor, and the transfer direction thereof. The intermediate roller is urged downward as a vertically movable movable roller so that the shape of the lower part of the belt is adjusted to the shape of the upper surface of the laminate with which the lower part abuts while the lower part of the belt is pressed when the compression is completed. Since the upper surface of the laminate is deformed to press the top surface of the laminate to a substantially flat surface, the laminate can be compressed and transferred while maintaining its original shape, and it is effective to prevent folds and wrinkles from occurring on the top of the laminate. It can prevent and improve product quality. Further, since the laminate is transferred while being compressed, the compression effect can be sufficiently obtained, and it is possible to prevent the collapse of the load of the laminate and increase the transfer speed of the conveyor, etc., and to accelerate the compression transfer. be able to.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of a compression transfer device according to a first embodiment.

FIG. 2 is an enlarged sectional view taken along line II-II of FIG.

FIG. 3 is a front view showing a state before compression of the compression transfer device.

FIG. 4 is a front view showing a compressed state of the compression transfer device.

FIG. 5 is a view corresponding to FIG. 3 showing a compression transfer device according to a second embodiment.

FIG. 6 is a front view showing a stack of newspapers.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Conveyor 5 ... Compressing mechanism (compressing means) 6 ... Elevating table 7 ... Cylinder (elevating means) 11 ... Pressurizing conveyor 13-17 ... Roller 20 ... Spring (biasing means) 21 ... Conveyor belt 23 ... Spring 24 ... Tension mechanism (tension means) 26 ... Drive motor (drive means) W ... Laminate

Claims (1)

(57) [Scope of utility model registration request] 1. A device for compressing and transferring a stack of newspapers or the like from above and below, which comprises a transfer conveyer for mounting and transferring the stack, and a compression means arranged above the transfer conveyor so as to be able to move up and down. The compression means comprises a lift table that can be lifted and lowered, a lift means that drives the lift table up and down, and a support belt that is supported by the lift table and rotates the roller by the driving means in the lowered state of the conveyor belt. A pressure conveyor that moves the lower part in the same direction as the transfer conveyor, and the pressure conveyor is a pair of non-movable vertically facing the transfer direction of the laminate at substantially the same height position. A fixed roller; at least one movable roller vertically movable between the fixed rollers and below the fixed rollers; and a biasing means for biasing the movable roller downward; Between both fixed rollers Laminate compression transfer device, such as a newspaper and a tensioning means for urging the belt upper downwardly to apply tension to the belt.