JPH08244Y2 - High speed type packing machine compression equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a device for compressing an article to be packaged in a high-speed packaging machine.

(Prior Art) In a packaging machine for film-wrapping articles to be wrapped such as newspaper, after compressing the articles to be wrapped on a conveyor,
It is sent on the conveyor in the packaging process.

However, as for the objects to be packaged handled by the packaging machine, a large bundle having a high stacking height of about 200 parts and a small bundle of about 2 to 6 parts are randomly mixed. Therefore, the compression device needs to perform an ascending or descending operation with a long expansion / contraction stroke each time the height of the packaged object changes, for example, from a large bundle to a small bundle or from a small bundle to a large bundle. There is a lot of waste with compressed air. Also, when a large bundle of items to be packed is sent out by a conveyor, its own weight is large so that it does not fall into the upper layer, but a small bundle of items to be wrapped has a small amount of its own weight, so it does not load onto the upper layer. Not only does it cause a collapse and hinders the speeding up of the packaging process, but the more the above-mentioned lifting operation increases, the more the wear of the lifting mechanism becomes more severe, and the reliability of the device is impaired.

Therefore, for example, Japanese Patent Publication No. 61-59968 discloses a compression device for feeding out a packaged product having a low height. In this prior art, when the article to be packaged is sent out by the conveyor, the extension drive of the air cylinder is transmitted to the roller for pressing the upper layer portion of the article to be packaged from above by the actuating arm and the auxiliary lever, so that the upper layer It is designed to prevent the parts from falling apart. The air cylinder, the actuating arm, and the auxiliary lever are repeatedly rotated around their respective pins. This not only causes the roller pressing operation to become unsmooth due to the friction of the pin coupling portion, but also has a problem that the structure becomes complicated and maintenance is troublesome. Therefore, in order to send out the objects to be packaged with a low stacking height with a simple structure, there are still problems to be solved.

In view of such conventional circumstances, the present invention provides a compacting device for a package in a high-speed packaging machine, which is capable of delivering a package having a low stacking height with a simple structure without causing a load collapse. The purpose is to do.

(Means for Solving the Problem) A compression device for an object to be packaged in a high-speed packaging machine according to the present invention comprises a first conveyor for compressing and delivering the object to be packaged, and a device for receiving the object to be packaged from the first conveyor. A second conveyor that forms a film package of the package, a loading conveyor that sends the packaged object to the first conveyor, a large bundle press provided above the first conveyor so as to be able to move up and down, and fixed to the frame of the large bundle press Small-bundle press consisting of a vertical cylinder mechanism and a roller that can be moved up and down by this vertical cylinder mechanism, and detects whether the objects to be packaged on the loading conveyor are large or small. If the shape detection sensor detects that the items to be packaged on the input conveyor are small bundles, the large bundle press located at the lower limit The vertical cylinder mechanism is driven against and the large bundle press is moved to the upper limit position only when it detects that it is a large bundle, so that the objects to be packaged sent to the first conveyor are compressed. It is characterized by being

(Operation) In the compression device of the present invention, the large bundle press is normally located at the lower limit, and when the shape detection sensor detects that the object to be conveyed is a small bundle. The vertical cylinder of the small bundle press attached to the frame of the large bundle press at the lower limit position is driven. Then, the small bundle of articles conveyed on the first conveyor is
It is compressed by the rollers and sent to the second conveyor without stopping its transportation. The article to be packaged sent onto the second conveyor is film-wrapped. On the other hand, if the objects to be packed that are transported on the loading are a large bundle,
When detected by the shape detection sensor, the large bundle press on the first conveyor is raised to the upper limit position. In such a state, when a large bundle of articles to be packaged is conveyed on the first conveyor without interrupting the conveyance by the loading conveyor and the first conveyor, the large bundle press is lowered and conveyed on the first conveyor. A large bundle of objects to be packed is compressed.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The directions in this description are as shown in FIG. 1 and FIG.
In the figure, the left is called the front and the right is called the back.

The compressing device 1 shown in FIGS. 1 and 2 is applied to a packaging machine including the first conveyor 2 and the second conveyor 3 (the entire illustration is omitted), and can be elevated above the first conveyor 2. Large bundle press 4 and small bundle press 5
The small bundle press 5 includes a vertical cylinder mechanism 7 fixed to a frame 6 of the large bundle press 4, and a roller 8 that can be moved up and down by the vertical cylinder mechanism 7.
It consists of

The first conveyor 2 is for compressing the articles W ₁ and W ₂ to be sent out forward. For example, a belt conveyor is applied to the first conveyor 2 in a plurality of rows at intervals in the width direction (direction perpendicular to the paper surface). Are arranged.

The second conveyor 3 includes the objects W ₁ to be packaged from the first conveyor 2,
A belt conveyor is used for receiving W ₂ and forming a film package. This film is on both conveyors 2,3
After the vertical seal of the front end of the film is made by the pair of vertical sealers 9 and 10 placed between the _two , the vertical seal of the rear end of the film covered by the objects W ₁ and W ₂ is made, and Horizontal sealing is performed by horizontal sealers (not shown) arranged on both sides of the conveyor 3 in the width direction. The upper and lower films (not shown) are respectively fed onto the second conveyor 3 from the rear of the vertical sealers 9 and 10 by pinch rollers (not shown).

Daitaba for press 4, for example in order to compress the Daitaba the package item W ₁ of the height H of stacked about 200 parts newspaper, Daitaba upper limit position A, which is retracted upward of the package item W ₁ (Figure 2 reference ) And a lower limit position B (see FIG. 1) through which a small bundle W _{2 of} height L can pass, and the large vertical cylinder mechanism 11 and the frame 6 are provided. And a delivery conveyor 12.

The large vertical cylinder mechanism 11 has a piston rod 11b fitted into a large cylinder 11a fixed to a frame or the like of a packaging machine, and the frame 6 is fixed to the lower end of the piston rod 11b. The delivery conveyor 12 is
While holding a large bundle W ₁ of height H, the first conveyor 2
And the drive speed of the roller 8 and the piston are arranged by, for example, applying a belt conveyor and arranging a plurality of rows at intervals in the width direction (direction perpendicular to the paper surface). An empty space is formed for passing the rod 7b.

The small bundle press 5 presses the first conveyor 2 from the storage position C shown in FIG. 2 in order to compress, for example, a small bundle W ₂ having a height L in which about 2 to 6 parts of newspapers are stacked. It is provided so that it can be raised and lowered until it comes into contact with it. The vertical cylinder mechanism 7 is the piston rod 11b of the large bundle press 4.
A cylinder whose lower end is fixed to a frame 6 connected to
7a and piston rod 7b fitted in this cylinder 7a
Consists of A roller 8 is attached to the lower end of the piston rod 7b.
Is attached. A feeding conveyor 13 is arranged behind the first conveyor 2. This loading conveyor 13 is used for the large bundle W ₁ and the small bundle W ₁ loaded from the previous process.
It is provided to identify either W ₂ , for example, a belt conveyor is applied, and an entrance detection sensor 14 arranged below the conveyance surface and a shape detection sensor 15 arranged above the conveyance surface. It has and.

The ingress detection sensor 14 is for detecting the size of the articles W ₁ and W ₂ to be packed on the conveying surface. The large bundle of articles W ₁ is detected by blocking the light flux, and the light flux passes through. By doing so, the small bundle packaged object W ₂ is detected.

 Next, the operation of the above embodiment will be described.

(A) small bundles to be packaged W ₂ on the case subsequent ones are small bundles to be packaged W ₂ of the height L turned conveyor 13 is the height L by ingress detection sensor 14 and shape sensor 15 Is detected. By inputting this detection signal to the large bundle press 4 via the control circuit, the large bundle press 4 remains in the lower limit position B. When the small bundle to be packaged W ₂ is fed from the feeding conveyor 13 to the first conveyor 2, the piston rod 7b of the small bundle press 5 is driven downward,
The first conveyor 2 is driven in the feed direction. During this feeding operation, the small bundle W ₂ on the first conveyor ₂ is
Since the upper layer portion is moved while being pressed by the roller 8, there is no risk of the load slipping, and after entering the second conveyor 3, the film is wrapped.

(B) Daitaba the package item W ₁ on the case subsequent ones are Daitaba the package item W ₁ of the height H is turned conveyor 13, enters the sensor 14
And the shape detection sensor 15 detects that the height is H. By inputting this detection signal to the large bundle press 4 via the control circuit, the large bundle press 4 moves up to the upper limit position A. When the large bundle to be packaged W ₁ on the feeding conveyor 13 is fed onto the first conveyor 2, the large bundle press 4 is driven downward, the feeding conveyor 12 is driven in the feeding direction, and the first conveyor 2 is fed. Driven in the direction. After Daitaba the package item W ₁ is fed into the on the second conveyor 3 without causing collapse of cargo in operation feed the Each conveyor 2, 12, the packaging according to the film takes place.

(Effect of the Invention) In the high-speed packaging machine of the present invention, the compressing device for the object to be packaged is such that the loading conveyor is provided in front of the conveying direction of the first conveyor for compressing and sending the object to be packaged. A shape detection sensor is provided to detect whether the objects conveyed on the loading conveyor are a large bundle or a small bundle.The large bundle press on the first conveyor is based on the detection result of the shape detection sensor. Since the small bundle press is driven, it is not necessary to stop the conveyance of the package by the first conveyor even when the package is compressed by the large bundle press and the small bundle press. Therefore, the article to be packaged can be compressed and packaged at high speed without interrupting the conveyance of the article to be packaged by each conveyor.

Moreover, the large-bundle press is normally at the lower limit position, and when the object to be packaged conveyed by the loading conveyor is a small bundle, only the vertical cylinder mechanism of the small-bundle press is driven. In addition, the case where the large bundle press is lifted from the lower limit position is limited to the case where the objects to be packaged conveyed on the input conveyor are large bundles. As a result, the number of times the large large bundle press is moved up and down is reduced, energy consumption can be reduced, and mechanical wear can be suppressed. Moreover, since the number of times the large-bundle press, which requires a relatively long time, is reduced, high-speed conveyance of the objects to be packaged is not hindered, and the efficiency of compression and packaging of the objects to be packaged is significantly improved.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a view for explaining the operation of a compression device when handling a small bundle of articles to be packaged, and FIG. 2 is an operation of the compression device when handling a large bundle of articles to be packaged. It is a figure explaining. 1 ... Compressing device, 2 ... First conveyor, 3 ... Second conveyor, 4 ... Large bundle press, 5 ... Small bundle press, 6 ... Frame, 7 ... Vertical cylinder mechanism, 8 ... Roller W ₁ ...... Large-bundle package W ₂ …… Small-bundle package

Claims (1)

[Scope of utility model registration request] 1. A first conveyor for compressing and sending an article to be packaged, a second conveyor for receiving the article to be packaged from the first conveyor and film-wrapping the article to be packaged, and the article to be packaged on the first conveyor. The feeding conveyor that sends out the bunches, the large-bundle press installed above the first conveyor so as to be able to move up and down, the vertical cylinder mechanism fixed to the frame of the large-bundle press, and the rollers that can be moved up and down by this vertical cylinder mechanism A small bundle press and a shape detection sensor provided to detect whether the objects to be packaged conveyed on the feeding conveyor are a large bundle or a small bundle. When it is detected that the upper package is a small bundle, the vertical cylinder mechanism is driven for the large bundle press located at the lower limit, and when it is detected that it is a large bundle. , Daitaba press is moved to the upper limit position, the compressor of the packaged articles in a high-speed type packaging machine, characterized by being adapted to compress the package item that is fed on the first conveyor.