JPS60183320A - Vacuum packer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] 0) Technical field of invention Is this invention a bagged product? Equipment for vacuum packaging.

This invention relates to a vacuum packaging device with a vacuum pump suitable for efficiently and automatically vacuum packaging all kinds of large-sized, heavy, and odd-shaped raw beef meat called "chilled beef".

(b) Prior art and problems Bagged products: As an automatic vacuum packaging device, there are 1 examples, for example, Patent Office Gazette, "Collection of Well-Known and Commonly Used Techniques (2) (Packaging Industry)" published on December 20, 1978. There is something like the one shown on page 73. In this conventional technology, a vacuum tank is placed above a belt conveyor that runs intermittently, and the vacuum tank and surface plate inside the belt are all movable up and down, or only the vacuum tank is movable. They are manually arranged at a predetermined position on the entrance side of the belt conveyor, and then automatically (a) the belt conveyor is moved, and (b) the empty tank is lowered.

(c) the same vacuum; (d) sealing the opening of the package (bag);
It is possible to carry out the vacuum processing of (e) releasing the inside of the vacuum chamber to the atmosphere and (f) raising the same.

However, this conventional technology is suitable for vacuum packaging of relatively small and lightweight foods, confectionery, medicine, machine parts, etc., and is suitable for vacuum packaging of large-sized, heavy, and irregularly shaped bagged products. It is not suitable for processing. For example, in the case of "chilled beef", beef chunks of various shapes weighing 20 to 30 mm must be packaged in bags with a size of approximately 61 x 97 cm. Requires a correspondingly large volume vacuum chamber,
In addition, in order to perform full vacuum processing in such a large volume vacuum chamber, a large capacity A-air pump is required, which is expensive and requires a certain amount of time. It is disadvantageous to carry out full vacuum packaging of bagged products.

(c) Purpose This invention was made in view of the above-mentioned conventional device, which is used to pack a large number of products into bags. Vacuum chambers for efficient vacuum packaging processing? Multiple vacuum pipes and vacuum pumps can be used to create multiple vacuum chambers. It is an object of the present invention to provide a vacuum packaging device that can increase the capacity of a vacuum pump to perform vacuum processing efficiently.

B) Structure A. What is the structure of the empty packaging device according to this invention in order to achieve the above objectives? After supplying the bagging equipment tray to the empty chamber, the vacuum chamber is lowered, the vacuum 5 bag opening is sealed, the vacuum chamber is released to the atmosphere, the vacuum chamber is raised, and the vacuum packaged products are discharged. In the vacuum packaging device, a plurality of the vacuum chambers are arranged in parallel, and each vacuum chamber is connected to one vacuum pump through one vacuum pipe with all valves,
A reserve tank is connected in the middle of this vacuum piping with a full check valve that automatically closes when the vacuum in the JK empty tube is higher than the vacuum in the reserve tank.

(e) Husband example The present invention will be described in detail below with reference to all the drawings.

This vacuum packaging machine 1 for bagged products (hereinafter referred to as this machine) is a vacuum packaging machine 2. In the illustrated example, two vacuum packaging machines 2.2 are shown. Since the structure and other aspects of the vacuum packaging machine 2.2 are almost the same, the vacuum packaging machine 2 shown at the bottom in FIG. Components are indicated by the same reference numerals, and redundant explanation will be omitted.

This vacuum packaging machine 2 includes a supply conveyor 3. Belt conveyor4. A plurality of (two in the illustrated example) vacuum chambers 5% and a bottom 6 disposed below them.
, a discharge conveyor 7, and various devices as drive sources, such as a vacuum system 10 including a motor 8 and a vacuum pump 9 for driving the belt conveyor.

The supply conveyor 3 is combined above the entrance side of the belt conveyor 4, and its tip is on the entrance side of the belt conveyor 4, and when the opening/closing shutter 11 is "open", the bagged products 12 are
is sent out from the supply conveyor 3 and transferred onto the belt conveyor 4 by its own weight. Open/close shutter 1
1 is a pace plate 13a installed upright on a frame (not shown)
A roller 14 is attached to the tip of a pair of rotatable left and right arms 13b which are pivotally supported by a rotatable arm 13b, and are opened and closed at a timing set in accordance with a processing cycle to be described later.

Incidentally, the bagged products 12 are constantly distributed and supplied to the supply conveyors 3.3 of the two vacuum packaging machines 2.2 by a distribution device (not shown).

The entire belt conveyor 4 is endless, and a plurality of sealing stands 15 are arranged on the surface at predetermined pitches in the longitudinal direction. This belt conveyor 4 has a driving wheel 16, a driven wheel 17, a guide wheel 18 which also serves as tension adjustment, and other guide wheels 19. Specifically, a single belt 20 is set to have a length t. All the pieces are connected by hinges 21 to form an endless shape.

The left and right sides of the belt unit 20 are supported and connected by a chain 22. Belt conveyor4. Specifically, each belt is 20
A large number of air bleed holes 26 are formed through the front and back surfaces, and gaps in vacuum processing, which will be described later, are provided in j? ) Air between Muro and the single belt 2o located above it? It is designed so that it can be pulled out, so that the belt 20 can be removed from the vacuum channel 5.
Even if the belt exists between the bottom 6 and the bottom 6, the J'C2 treatment prevents the belt 20 and the belt conveyor 4 from being damaged at all.

By the way, this belt conveyor 4 has a plurality of support rollers 27 closely arranged and supports 2 provided between the valley support rollers 27.
The first half of the plane formed on the flat R lines P and L secured in step 8 is the standby zone 29, and the bottom 6VC
The second half of the flat plane secured by this is a processing zone 30, and even a heavy bagged product 12 can be conveyed from the input side to the output side without any trouble and without losing its posture.

In the illustrated example, the waiting zone 29 has two bagged products 1
Similarly, in the processing zone 30, two bagged products 12 are provided so that they can be vacuum-processed, and therefore the belt itself has a constant length of 2 degrees. The standby zone 29 and the processing zone 3 are respectively
It has a length of 0, and is set in advance to match the feed pitch of the intermittent conveyance of the belt conveyor 4.

Two seal stands 15 are disposed on the belt unit 20 in a longitudinally intersecting manner in preparation for two bagged products 12, and the bagged products 12 are placed in front of the bag bottom 31 and opened at the bag opening 32.
are placed on a seal stand 15 and are received by a single belt 20 and conveyed.

However, the length t of the single belt 20, the length of the standby zone 29 and the processing zone 30, the feeding length of the belt conveyor 4,
The number of sealing stands 15 arranged on the belt unit 20, the number of bags to be processed 1lIIil of the bagged products 12, etc. are all closely related to the size of the vacuum chamber 5, the number of processed items, and other capabilities, and in this vacuum packaging apparatus, The number of vacuum chambers 5 is not limited to two as shown in FIG.

In the example shown, there are 2 vacuum channels and 4 belt conveyors.
It is continuous and integrated in the longitudinal direction, and is provided so as to be movable up and down above the belt conveyor 4 corresponding to the processing zone 30 by means of up and down movement means (not shown). A bottom 6 of a size suitable for the vacuum chamber 5 is arranged inside the belt conveyor 40. This vacuum Channo:! 5 is formed to match the volume of the large-sized bagged product 12, and two pieces are connected and integrated so that all the two-piece bagged products 12 can be processed at the same time, and the circular part is in a conductive state without a partition wall. ing. And two vacuum chambers? 5
Branch passages 38 of vacuum piping 37, which constitutes a part of the vacuum system 10 to be described later, are connected to the side surfaces of each of them.

The 95 vacuum chambers are equipped with 39 seals.
Further, a pressure cylinder 40 for sealing is provided on the upper surface of the vacuum chamber 5 to move the seal/piece 39 up and down.

Note that the other details of the vacuum channels 5 are substantially the same as the technology of the conventionally known "vacuum channels" and will not be described here.

The discharge conveyor 7 is located below the exit side of the belt conveyor 4.
C is combined, and the product is packed in bags after vacuum packaging processing 12
A discharge roller 4 is installed between the output side 1 of the belt conveyor 4 and the discharge roller 4 in a downwardly inclined direction so that it can be automatically discharged by its own weight.
1 is installed as an intervening device.

By the way, the vacuum packaging machines 2゜2, which are arranged horizontally in parallel, are designed to share the same "drive source" as much as possible, and among the various drive sources, at least the vacuum packaging machine 8, which includes the motor 8 for driving the belt conveyor dredger 4 and 9 vacuum pumps, is used. System 10 is shared. 1st
As shown in the figure, <2tfi vacuum packaging machines arranged in parallel 2.2
The motor 8 is first placed in the empty space 42 between the two, and the drive wheels 16 and 16 are connected to the motor 8 through 43 brakes, respectively, so that the motors 8 can be used in common.

Further, a vacuum system 1o is arranged in the empty space 42.

This vacuum system 10 is located between the vacuum pump 9 and the vacuum channels 5 and 5 as shown in Figure @3? They are connected by vacuum piping 37, and vacuum valves 44 and 45 are interposed in the branch paths 38 and 38, respectively, and a reserve tank 48 is connected in the middle of vacuum piping 37 through vacuum valve 46 and check valve 47. It is connected. When the vacuum valves 44 and 45 are "closed", the vacuum valve 46 is "open" and the reserve tank 48 is completely degassed.
If either vacuum valve 44 or 45 is "open", vacuum valve 4
G becomes "closed". In addition, the reserve tank 4B has air in the vacuum chamber 5.5 through the check valve 47? Push open 'fc, remove all the air, and at the same time suck it with vacuum pump Ic,
When the degree of vacuum in the vacuum pipe 37 yen becomes higher than the degree of vacuum in the reserve tank 48 yen, the check valve 47 automatically closes and the capacity of the vacuum pump 9 increases by the amount sucked into the reserve tank 48. That's how it is. Note that the vacuum pump 9 does not necessarily need to be placed within the empty space 42.

and at least two vacuum packaging machines 2 arranged in parallel;
2 is "processing cycle"? The timing can be set by shifting an arbitrary amount of time. As a "processing cycle".

(■) Movement process of belt conveyor 4.

(n) Lowering process of vacuum chambers 5.

(Vacuum processing of vacuum chamber 5.

(IV) Seal treatment of bag opening 32.

(V) - Opening of 95 gates of A sky Channo to the atmosphere.

(Vl) Lifting process of vacuum chamber 5.

In the 1m transfer process of the belt conveyor 4 in (I), the bagged products 12 are supplied to the processing zone 3o of the belt conveyor 4, and the vacuum-packaged products are supplied from the processing zone 3o. The bagged products 12 are discharged at the same time, and the "lag" in the timing setting is as shown in the figure, when the vacuum packaging machine 2 has two bagged products 12 and two grapes.
．． ? I: To perform sequentially, alternately, and continuously/automatically.

It is said to be about 1/2 of that.

Next, the functions of this device will be explained.

(I) Movement process of the belt conveyor 4: Two standby saws 729Vc of the belt conveyor 4 are used to supply the bagged products 12.

Specifically, the clutch brake 43 is connected, and the motor 8
When the entire rotational force is transmitted to the drive wheel 16, the chain 22 meshed with the drive wheel 16 is driven, and the belt conveyor 4 is rotated one pitch at a feed pitch corresponding to the length t of the belt 20. It is moved intermittently from the inlet side to the outlet side.

At this time, the opening/closing shutter 11 becomes "open".

The bagged products 12a are completely in front of the bag bottom 31, and are transferred onto the belt conveyor 4 due to their own weight, and the bag opening 32 is placed on the top sealing stand 15Vc, and the products are supplied in a vertical arrangement. It is.

Then, the bagged products 12b on the standby zone 29 of the belt conveyor 4 are transferred to the processing zone 30, and the vacuum-packed bagged products 12c in the processing zone 30 are transported through the discharge row 241 by their own weight. It will be discharged onto the discharge conveyor 7. In the illustrated example, the supply of the bagged products 12 and all other processing are performed simultaneously for two products, and the same applies to the following description unless otherwise specified.

(Lowering process of the old vacuum channel 95; two vacuum channels 95 integrated in series are lowered by an appropriate vertical movement means (for example, a hydraulic cylinder) not shown, and the lower end is
j? It is brought into contact with the belt conveyor 4 on the tom 6.

still.

If all hydraulic systems are used as the drive source for the vertical movement means,
As with the vacuum system 10, it is logical that it can be shared.

(1) Vacuum Channo? 5. Vacuum processing: The vacuum pump 9 operates and the air in the vacuum chamber 95 is degassed through the vacuum pipe 37 and its branch line 38, and as shown in FIG. It becomes "open",
Vacuum valve 46 is "closed" and the open vacuum valve 44 or 4
The air of 5 yen in the vacuum chamber related to No. 5 is sucked into the reserve tank 481F3 when the reverse valve 47 is fully pushed open. ...
At the same time, suction is performed by the vacuum pump 9, and the vacuum chamber 5 is degassed.

As described above, when the degree of vacuum in the vacuum pipe 37 is greater than the degree of vacuum in the reserve tank 48, the check valve 47 is automatically "closed".

When the vacuum chamber is at 7,795 yen and degassing is performed, the air between the belt conveyor 4 and the yd) is simultaneously drawn through the air vent hole 26, and the belt conveyor 4 is z
The presence of tom 6 prevents flexible suction into the vacuum chamber/95 and prevents damage.

(IV) Seal processing of the bag opening 32; the sealing pressure cylinder 40 works, the sealer 39 descends and clamps the tearing bottom part 32 with the sealing stand 15, melting and sealing the tearing bottom part 32. It will be sealed.

(V) Vacuum chamber 7,795 yen air release process: After the sealing process, the inside of the vacuum chamber 5 is released to the atmosphere.

(Vl) Raising process of vacuum channels 5; Vacuum channels 5 are returned and raised by the vertical movement means in the opposite direction.

The above-mentioned processes (1) to (Vl) are carried out continuously in each vacuum packaging machine 2.

As shown in the figure, two vacuum packaging machines 2.2 are used.

In a processing cycle whose timing is set with a 1/2 "shift" meeting, the shared "driving source" performs vacuum packaging processing alternately and continuously/automatically with each vacuum packaging machine 2. If this is done, the vacuum pumps 9 will be used alternately, resulting in twice the driving rate. Similarly, the other "driving source" can double the driving rate with one unit, and the two-packed products 12 can be packed in two vacuum packaging machines 2.2, that is, a plurality of vacuum chambers 5, 5. This means that a large number of vacuum packaging processes can be carried out alternately and continuously with high efficiency.

(F) Effects Since the vacuum packaging apparatus according to the present invention has the contents as described above, many excellent effects can be expected, and the main effects can be summarized as follows.

■ Multiple vacuum chambers? 7Il'' 1 with 1 vacuum piping
A check valve is connected to two vacuum pumps, and a check valve is installed in the middle of the vacuum pipe to automatically close when the vacuum level in the vacuum pipe is higher than the vacuum level in the reserve tank. Until the tank is closed, all the air in the vacuum chamber can be sucked into the reserve tank, and the capacity of the vacuum pump increases by this amount of suction.

■ When processing all large-sized and irregularly shaped bagged products, the volume of the vacuum chambers becomes large, and if you try to increase the processing capacity, a large-capacity and expensive vacuum pump will be required. Since one shared vacuum piping and one vacuum pump are required, the shared vacuum pump becomes less economical and the overall equipment is simplified, so that one unit can double the operating rate. Even if all the expensive vacuum pumps are used, it is still economical, and ■ Multiple vacuum pumps can be used alternately and continuously.
Since it can be processed, the vertical movement of the vacuum tube and the sealing process can be carried out with high time efficiency, and the driving process of the belt conveyor, that is, the feeding time can be made as fast as possible without causing any problems.

■ Common use of vacuum pumps and vacuum piping 9 This has the effect of simplifying equipment and structure 111S.

[Brief explanation of drawings]

Is Figure 1 an example of vacuum packaging equipment for bagged products? FIG. 2 is a side view taken in the direction of the arrow (■) in FIG. 1, and FIG. 3 is an explanatory diagram of the vacuum system. 1... Vacuum packaging device 2... Vacuum packaging machine 3... Supply conveyor 4... Belt conveyor 5... Vacuum channel? 6... Chitom 7... Discharge conveyor 8...
・Motor 9...Vacuum pump 10...Vacuum system 15・
... Seal stand 37 ... Vacuum piping 38 ... Branch U path
39... Seal holes - 44, 45, 46... Vacuum valve

Claims (1)

[Claims] When the bagged product is supplied into the vacuum channels, the vacuum channels are lowered, the vacuum channels are vacuumed, the bag openings are sealed, the vacuum channels are released to the atmosphere, the vacuum channels are raised, and the vacuum-packaged products are supplied. In the vacuum packaging equipment that performs all discharges. A plurality of the vacuum chambers are arranged in parallel, and a valley vacuum chamber is connected to one true bonzo via one vacuum piping,
A vacuum packaging apparatus characterized in that a reserve tank is connected to the vacuum piping in the middle thereof, with a check valve that automatically closes when the vacuum K in the vacuum pipe is higher than the vacuum degree of the reserve tank.