JPS6128725Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention covers an object to be packaged by welding the front and rear ends of two upper and lower films, and vacuums the object together with the film of the tube covering it. The present invention relates to a vacuum packaging machine in which both ends of the tube-shaped film are melt-sealed after the tube-shaped film is carried into a box and the air in the vacuum box is removed.

(Prior Art) Conventionally, as shown in FIG. 4, an object L to be packaged such as meat is carried into a long and narrow plastic tube K, and the tube is cut into a predetermined length by a cutter M. Further, as shown in Fig. 5, after tensioning both ends of the cut tube K with a plurality of claws N, N, etc., the article to be packaged L and the tube K are carried together by a conveyor P into a box Q for vacuum packaging. Provided vacuum packaging equipment designed to
−37525). The purpose of tensioning both ends of the tube K with the claws N as shown in Fig. 5 is that if the ends of the tube K are sealed in a wrinkled state in the vacuum box Q, the airtightness of the bag is likely to be impaired. Even if the tube is tensioned outside the vacuum box Q as shown in the figure, the tube is likely to wrinkle during the process of being carried into the vacuum box, and the above purpose will not necessarily be achieved. Particularly when trying to package large, irregularly shaped meat cuts, the flat area of each tube becomes relatively large, making wrinkles more likely to occur. However, if you try to tension both ends of the tube inside the vacuum box Q,
A device to assist in opening both ends of the tube and each claw N
The disadvantage is that a device for operating the 1000p must be installed in each vacuum box, which increases the complexity of the structure.

(Problems to be solved by the invention, etc.) In view of the above points, the object of the present invention is to provide a packaging machine with a simple structure for vacuum packaging cut meat so that wrinkles do not form at both ends of the tube. .

(Means for solving the problem) In order to achieve the above object, the present invention has two strips on the upper surface of the first belt conveyor installed horizontally.
means for supplying different kinds of films in an overlapping manner; and means for cutting by a pair of seal cut bars from above and below the first belt conveyor between each large piece of meat supplied at a predetermined interval between the two films; ,
A vacuum box formed by a lower table and an upper movable lid provided across the belt surface of a second belt conveyor provided following the first belt conveyor, and means for evacuating the inside of the vacuum box. , means for melt-sealing the film by lowering a sealing bar from above a pair of pillow materials provided on the top surface of the table on both sides of the second belt conveyor, and connected to an air pump. The tips of the two air injection nozzles
On both sides of the belt conveyor, two side belts are arranged coaxially with the pulleys that support the front and rear ends of the second belt conveyor, respectively, from the loading side of the packaged items to between the upper and lower seal cut bars. In addition to being arranged along the pillow material, both side belts are held at the same height as the upper surface of the pillow material by auxiliary pulleys provided at the front and rear of each of the pillow materials, and the front end pulley and the front auxiliary pulley are arranged along the pillow material. It is constructed by forming an upward slope between the two.

(Function) According to the present invention, two upper and lower films are welded to form a tube on the first belt conveyor at the front, and the cut meat is covered with this tube-shaped film. In this case, the two air injection nozzles arranged between the films actively energize the front corners of the film in the running direction of the first conveyor with the jet of air, thereby causing wrinkles in the front corners of the film. Place the cutlet meat in the second position to prevent it from forming.
It is carried into a vacuum box via a conveyor. The second conveyor is provided with side belts at both ends of the tubular film along a pair of pillow materials corresponding to sealing bases and at the same height as the pillow materials, and these side belts form a slope. Both ends of the tube-shaped film, which has been unwrinkled by the jetting air force, are supported by the side belts and carried into the vacuum box as they are, and after being subjected to the action of vacuum in the vacuum box. , both ends of the film are sealed.

(Example) Examples of the present invention will be described below with reference to FIGS. 1 to 3.

In FIGS. 1 and 2, a device A for coating cut meat D with a film consists of a pair of endless chains 1 supported on chain foil and arranged on both sides.
A first belt conveyor 1 formed by installing a large number of rods 12, 12 between the belt conveyors 1, 11, a pair of seal cut bars 2, 3 disposed above and below the middle part of the conveyor 1, Two film support shafts 4 and 5 provided on the upper and lower sides of the conveyor 1 are connected to an air pump 6, and their tips are parallel to the upper surface of the first conveyor 1, and the two seal cuts are connected from the side where the packaged items are carried in. It consists of a pair of air injection nozzles 7, 7 installed between the bars 2, 3.

The first conveyor 1 has a gap between the bars 12, 12... and is configured to rotate intermittently by a certain length, while the lower seal cut bar 3 has a gap between the bars 12, 12... As the cam 8 rotates, it is pushed upward through the gap between the bars 12, 12 of the conveyor 1. The upper and lower seal cut bars 2 and 3 are connected via levers and links, and when the lower seal cut bar 3 is moved upward, the upper seal cut bar 2 that moves in conjunction with it moves downward symmetrically. It is configured to do so. Moreover, the air injection nozzles 7, 7 on both sides are connected to the object to be packaged D.
They are placed at specified intervals so as not to impede transportation.

First, the tips of the two films F1 and F2 supported on the upper and lower shafts 4 and 5, respectively, are cut into a pair of seal cut bars 2 and 3 at the upper part of the first belt conveyor 1.
Clamp with pressure and heat weld. Next, the meat D is placed on the first belt conveyor 1 through the lower film F2 in front of the seal cut bars 2 and 3. When the first belt conveyor 1 is rotated counterclockwise, the meat mass D is transferred to the films F1 and F2.
It passes between the upper and lower seal cut bars 2 and 3 and is carried to the rear side thereof. On the other hand, compressed air supplied from the air pump 6 is injected into the film from two nozzles 7, 7 as shown in FIG. 2, and positively applies tension to both ends of the film in the direction of travel of the film. Then, when the seal cut bars 2 and 3 are brought close to each other again, the upper and lower films F1 and F2 are welded and fused along the meat mass. As a result,
The meat D becomes a semi-finished product placed in a tube E formed by two films.

On the other hand, the vacuum packaging device D downstream of the first conveyor has a lower table 15, a movable lid 16 above it, and a second conveyor that surrounds the table and rotates intermittently while sliding on the upper surface of the table. A belt conveyor 17 and side belts 19, 1 provided on the outside of a pair of pillow materials 18, 18 provided on both sides of the second belt conveyor 17 and on the top surface of both ends of the table 15.
It consists of 9.

As shown in FIG. 3, the movable lid 16 can be suspended by an arm 20 and can be moved vertically by the arm 20. Further, the movable lid 16 is connected to a vacuum pump via a hose 14, and is provided with two seal bars 21, 21 facing the pillow materials 18, 18 inside the movable lid 16, and these seal bars 21, 21 are attached to the upper part. The air cylinders 22, 22 are connected to each other. In addition, the both side belts 19, 19
The front and rear ends of the second belt conveyor 17 are supported coaxially with pulleys 23 and 24 that support the front and rear ends of the second belt conveyor 17. In particular, only the side belts 19 and 19 are supported by auxiliary pulleys 25 and 2 at the front and rear of the table 15, respectively.
5, 26, 26 to support the middle of the belts 19, 19 above the pillow materials 18, 18, and also to support the belts 19, 19 so as to lift them up, and to support the belts 19, 19 in a lifting manner above the pillow materials 18, 18. side belt 1
9 and 19, and a variable tension pulley 2 is provided below the side belts 19 and 19.
There are 8.

First belt conveyor 1 and second belt conveyor 1
7 are interlocked so that the semi-finished products on the first belt conveyor are transferred to the second belt conveyor 17. In this case, the belts 19, 19 on both sides are also rotating together, and both ends of the tube E protruding from both ends of the meat mass are lifted higher than the pillow materials 18, 18 by ascending the slope C of the side belts 19, 19. . When the semi-finished product reaches below the movable lid 16, the rotation of each belt 17, 19, 19 is stopped. Then, when the movable lid 16 is lowered, both side belts 19, 19
is pushed by the movable lid and the auxiliary pulleys 25, 25,
It moves downward together with 26 and 26. Therefore, both ends of the tube E in the semi-finished product are the pillow materials 18 and 1, respectively.
Served on top of 8. Thereafter, the air in the sealed room formed between the movable lid 16 and the table 15 is sucked through the hose 14. When the inside of the tube in the semi-finished product becomes vacuum, the pressure acting on the air cylinders 22, 22 closes the seal bars 21, 2.
1 is lowered and both ends of the tube E are melt-sealed with the pillow materials 18, 18. And from the hose 14 to the movable lid 16
When the atmosphere is introduced into the chamber, the atmospheric pressure causes the film to adhere to the meat. Thereafter, the movable lid 16 is pulled up and the belts 17, 19, 19 are rotated to carry out the vacuum packaged product.

(Effects) As mentioned above, the present invention provides a device for coating an article with a film in the shape of a tube, and a vacuum packaging device that applies a vacuum to the semi-finished product formed by the device and melt-seals both ends of the tube. In a conveyor type vacuum packaging machine consisting of a device, two nozzles 7,
The tension at both ends of the tube is always maintained by the air jetted from 7, and the tension is maintained at both ends of the tube by side belts 19, 19 having an upward slope C. Because it can be guided to the upper surface of the corresponding pillow material 18, 18,
Both ends of the tube can be sealed without wrinkles, making it possible to automatically vacuum package large pieces of meat without vacuum leaks.

[Brief explanation of drawings]

Figure 1 is a side sectional view showing an embodiment of the present invention, Figure 2 is a - line view of the previous figure, Figure 3 is a - line sectional view of Figure 1, and Figures 4 and 5 are conventional It is an explanatory diagram of an example. A... Film coating device, B... Vacuum packaging device, 1... First belt conveyor, 2, 3... Seal cut bar, 4, 5... Film support shaft, 6...
...Air pump, 7...Air injection nozzle, 15...
Table, 16... Movable lid, 17... Second belt conveyor, 18... Pillow material, 19... Side belt, 23, 24... Pulley, 25, 26... Auxiliary pulley, F1, F2... Film, D... Meat lump.

Claims (1)

[Scope of utility model registration request] means for supplying two types of belt-shaped films F1 and F2 in an overlapping manner on the upper surface of the first belt conveyor 1 installed horizontally; 1 A pair of seal cut bars 2 and 3 from the top and bottom of the belt conveyor 1
and a second belt conveyor 17 provided subsequent to the first belt conveyor 1.
a vacuum box formed by a lower table 15 and an upper movable lid 16 provided across the belt surface; a means for evacuating the inside of the vacuum box;
A pair of pillow materials 18 and 1 provided on the upper surface of the table 15 on both sides of the second belt conveyor 17
Seal bars 21, 21 from above for 8, respectively.
The tips of two air injection nozzles 7, 7 connected to the air pump 6 are placed on both sides of the first belt conveyor 1 on the side where the packaged items are brought in. The two side belts 19, 19 are arranged coaxially with pulleys 23, 24 supporting the front and rear ends of the second belt conveyor 17, respectively. Pillow material 18, 18
and each of the pillow materials 18, 18
Auxiliary pulleys 25, 25, 26, 2 provided before and after
6 holds the side belts 19, 19 at the same height as the upper surface of the pillow materials 18, 18, and the pulley 23 at the front end and the auxiliary pulley 25, 2 at the front end.
5. A vacuum packaging machine with an upward slope C formed between the vacuum packaging machine and the