JP2004276923A - Belt-type vacuum packaging machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide, in a belt-type vacuum packaging machine, a mechanism for regularly and surely discharging a packaging bag with an opening sealed without losing a continuous processing function of the belt-type vacuum packaging machine. <P>SOLUTION: The belt-type vacuum packaging machine 17 includes an intermittently moving endless conveyance belt 1 having a plurality of seal bases 4 fixed for sealing the opening 16 of the packaging bag 15. After the side of the opening 16 of the bag 15 reaches a vacuum chamber 12 while mounted on the seal base 4 and vacuumed/sealed, the bag 15 is discharged from a reversing region of the belt 1 to a collection section. One of ends of an L-shaped arm 7 is rotatably pivoted to a side face of the seal base 4, and an opening pressing member 8 in parallel to the sealing direction is provided at the other end. In addition, a horizontal receiving side 9 extending from below a pivoted portion of the arm 7 is formed for fixing a working pin 14 in contact with the lower part of the horizontal receiving side 9 in the vicinity of a discharging section of a body frame 11 of the belt-type vacuum packaging machine. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a belt-type vacuum packaging machine that vacuum-packs packaging objects.
[0002]
[Prior art]
Patent Literatures 1 to 4 disclose an apparatus for automatically transporting a packaging bag containing an object to be packaged such as a snack food or a processed food containing liquid juice or an electronic component to a packing position in the next step by sealing the opening in a vacuum state. And a belt-type vacuum packaging machine as shown in FIG. 3 is typically used.
[0003]
In the belt-type vacuum packaging machine shown in FIG. 3, a transport belt 1 which is an endless belt is supported around two pulleys 2 and 2. A seal table 4 is attached to the conveyor belt 1 at equal intervals, and the seal table 4 is placed on the opening 16 side of a packaging bag 15 in which a packaging object 20 is placed.
[0004]
Further, the packaging object 20 arrives at the lower area of the chamber 13 due to the intermittent running of the transport belt 1, and the chamber 13 is lowered each time the transport belt 1 stops, and the chamber 13 can swing through the transport belt 1. The vacuum chamber 12 is formed by being in close contact with the surface plate 21. By operating a degassing pump (not shown) from the formed vacuum chamber 12 and degassing from the degassing pipe 22, the gas in the packaging bag 15 containing the packaging target 20 is evacuated.
[0005]
Then, after lowering the seal bar 23 of the seal mechanism provided in the chamber 13, the sealing bag 23 placed on the seal base 4 is heat-sealed (sealed) by nipping the opening 16 side thereof. , The chamber 13 is raised.
[0006]
Next, the transport belt 1 starts running, and the packaging bags 15 that reach the reversal portion of the transport belt 1 fall and are sequentially discharged to a collection unit (not shown). A predetermined number of the discharged sealed bags 15 are automatically arranged in the packing box at the collection section, visually inspected, packed, and then carried out.
[0007]
As described above, this type of belt-type vacuum packaging machine is extremely effective for automatic vacuum packaging, since the opening of the packaging bag can be automatically sealed without any manual operation and can be sequentially discharged to the collection part. Device.
[0008]
However, in order to automatically arrange the packing bags in the packing box when discharging the sealed packing bags to the collection part, all the packing bags to be discharged must be surely discharged in a fixed direction. Is required.
[0009]
If the paper is ejected in a random direction, extra equipment or personnel is required for the packing operation, and the aim of automating the installation of the belt-type vacuum packaging machine with no angle is meaningless.
[0010]
As a countermeasure, as shown in FIG. 4, an L-shaped arm 7 is provided on the side surface of the seal table 4 attached to the conveyor belt 1, and one end of the arm 7 is pivotally supported on the seal table 4 to be rotatable. At the other end, a bar-shaped opening pressing member 8 is provided in parallel with the sealing direction of the opening 16 of the packaging bag 15 placed on the sealing table 4, and the opening pressing member 8 presses the opening 16 during sealing. Attempts have been made to prevent the packaging bag 15 from jumping up when the packaging bag 15 is dropped and discharged, and to discharge the packaging bag 15 accurately for packing.
[0011]
However, although such an opening holding member 8 is effective in accurately positioning the opening 16 at the time of sealing, the sealing portion is welded or wound around the opening holding member 8 after sealing, and the packaging bag 15 is conveyed. Since the belt 1 may be entangled directly below the reversing portion, it is not expected that the discharge direction of the respective packaging bags 15 is correct, and a manual assisting operation is required when packing the boxes.
[0012]
[Patent Document 1]
Japanese Patent Publication No. 6-17130
[Patent Document 2]
Japanese Utility Model Publication No. 6-42967
[Patent Document 3]
JP 2000-109091 A
[Patent Document 4]
Japanese Patent Application Laid-Open No. 2000-130511
[Problems to be solved by the invention]
The present invention provides a mechanism in a belt-type vacuum packaging machine capable of regularly and reliably discharging a packaging bag after sealing an opening without losing the continuous processing function of the belt-type vacuum packaging machine. Things.
[0017]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention includes an endless transport belt that intermittently moves and fixes a plurality of seal stands for sealing the opening of the packaging bag, and the opening side of the packaging bag is placed on the seal stand. In a belt-type vacuum packaging machine that reaches a vacuum chamber in a state, vacuum-seales, and then discharges a packaging bag from a reversing portion of a conveyor belt to a collection portion, one end of an L-shaped arm is provided on a side surface of the seal table. The part is rotatably supported, the other end is provided with an opening pressing member parallel to the sealing direction, and a horizontal receiving side extending from below the shaft supporting part of the arm is formed, and the belt-type vacuum packaging is performed. An operating pin that abuts on a lower portion of the horizontal receiving side is fixed near the discharge portion of the main body frame of the machine.
[0018]
Further, in this configuration, a vertical receiving side portion extending from the front of the pivot portion of the arm member is further formed, and on the inner side surface of the chamber forming the vacuum chamber, the vertical receiving side portion is formed when the vacuum chamber is formed. It is characterized in that the abutting push-down pin is fixed.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples shown in the drawings.
[0020]
(Example 1)
1A and 1B show a first embodiment of the present invention, wherein FIG. 1A is a plan view of a main part near a vacuum chamber of a vacuum packaging machine, and FIG. 1B is a side view of the main part. The same components as those in FIGS. 3 and 4 described above are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0021]
In FIG. 1, on the side surface of the seal table 4 fixed to the conveyor belt 1, a substantially T-shaped extending lower than the upper surface of the seal table 4 and extending rearward in the conveying direction of the conveyor belt 1 (front side in the conveying direction) A receiving plate 5 is provided, and an upper end portion of the receiving plate 5 on the rear side in the transport direction serves as a holding portion 10 of the opening pressing member 8.
[0022]
A support shaft 6 is projected outward on the front side of the receiving plate 5 in the transport direction (the forward side in the transport direction), and one end of a substantially L-shaped arm 7 is rotatably supported on the support shaft 6. Then, the end of a straight cylindrical opening pressing member 8 is fixed to the other free end. The opening pressing member 8 has a weight sufficient to hold the opening 16 side of the packaging bag 15 without any trouble in deaeration inside the packaging bag 15 during the vacuum processing. It is to be noted that a larger weight can be dealt with by forming a curved portion or a small-diameter portion serving as the non-contact portion 80 at an intermediate portion in the length direction of the opening pressing member 8.
[0023]
Further, a horizontal receiving edge 9 extending downward from the pivot portion of the arm 7 (indicating the direction when the arm 7 is located above the transport belt 1, the same applies hereinafter) to such a length as not to contact the transport belt 1. Is formed. Further, on the inner side of the main body frame 11 of the belt-type vacuum packaging machine 17 (hereinafter, referred to as a vacuum packaging machine), a discharge section 3 of the vacuum packaging machine 17 and a vacuum chamber 12 on the rear side in the transport direction are formed. An operating pin 14 is provided at an intermediate portion of the chamber 13 to be in contact with the horizontal receiving side 9 of the arm 7 so as to protrude therefrom.
[0024]
When performing the vacuum packaging operation in the vacuum packaging machine 17 having the above-described configuration, first, the opening pressing member 8 is manually lifted and rotated to avoid upward from the seal table 4, and then the conveyor belt 1 is moved. In the upper supply unit 24 (see FIG. 3), the openings 16 of the individual packaging bags 15 are arranged on the seal table 4. After the arrangement, the opening pressing member 8 is again rotated in the opposite direction to clamp the opening 16 side.
[0025]
In this state, the conveyor belt 1 intermittently moves one pitch at a time, and after the vacuum / sealing packaging process, the arm 7 on the conveyor belt 1 turns below the conveyor belt 1. The horizontal receiving edge 9 of the arm 7 abuts on the operating pin 14 fixed to the body frame 11 of the arm 17, and the arm 7 is enclosed by a square in FIG. , And rotates about the support shaft 6. Thereby, the opening pressing member 8 is forcibly detached from the packaging bag 15 after the vacuum / sealing packaging process, and the packaging bag 15 is smoothly discharged. Note that the posture of the arm 7 indicated by a two-dot chain line at the end of the conveyor belt 1 in FIG. 1B schematically shows a state in which the conveyor belt is moving by one pitch after the vacuum / sealing packaging process. It is. 2 and 4 are the same.
[0026]
Thereafter, the arm 7 that has turned below the transport belt 1 advances in a free state, reaches the supply unit 24 on the transport belt 1, and returns to the initial position and posture.
[0027]
(Example 2)
FIG. 2 is a side view of a main part near a vacuum chamber of a vacuum packaging machine according to a second embodiment of the present invention. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.
[0028]
In the arm 7 of the present embodiment, in addition to the horizontal receiving edge 9 described in the first embodiment, a vertical receiving edge 18 which is appropriately extended forward from a shaft support of the arm 7 is formed. Further, a push-down pin 19 is disposed at a position where the upper end of the vertical receiving side portion 18 is slightly pushed down when the chamber 13 forms the vacuum chamber 12 in the middle portion of the inner surface of the chamber 13.
[0029]
In the vacuum packaging machine 17 of the present embodiment, when the chamber 13 is lowered to perform the vacuum / sealing packaging process, as shown by a box in FIG. When the pin 19 comes into contact with the vertical receiving side portion 18 of the arm member 7 and the vacuum chamber 12 is formed by the chamber 13, the opening pressing member 8 is slightly lifted from the opening 16 side of the packaging bag 15, and Becomes free. When the chamber 13 is lifted after the vacuum / sealing and wrapping process is completed, the pressing of the vertical receiving side portion 18 by the push-down pin 19 disappears, so that the arm member 7 is rotated by the weight and moment of the opening pressing member 8 and again. Hold the opening 16 side. Thereby, deaeration of the packaging bag 15 during the vacuum / sealing packaging process can be reliably performed. In addition, the weight of the opening pressing member 8 is set to a weight corresponding to the capability of the elevating mechanism of the chamber 13.
[0030]
After that, when the movement of the conveyor belt 1 is resumed, the horizontal receiving edge of the arm 7 is attached to the operating pin 14 fixed to the main body frame 11 of the vacuum packaging machine 17 in the vicinity of the discharge section 3 as in the case of the first embodiment. The arm 7 rotates about the support shaft 6 as the conveyor belt 1 moves. Thereby, the opening pressing member 8 is forcibly detached from the packaging bag 15 after the vacuum / sealing packaging process, and the packaging bag 15 is smoothly discharged.
[0031]
【The invention's effect】
Since the present invention is configured as described above, after the vacuum / sealing packaging process is completed, the opening pressing member is mechanically separated from the packaging bag with the movement of the transport belt, and the opening pressing member is moved on the discharge side. Since there is no need to manually release, there is no reduction in work efficiency.
[0032]
Further, even if the sealing portion of the packaging bag is softened by heating at the time of sealing and the opening pressing member is in a state close to welding, so-called, the opening pressing member is forcibly peeled off by the rotation of the arm member. There is no situation in which the belt is pulled directly below the conveyor belt. Therefore, even if the packaging bag is lightweight and the fall from the discharge portion winds around the opening pressing member, it can be reliably discharged.
[0033]
In addition, a vertical receiving edge is provided on the arm, and a push-down pin is provided on the inner surface of the chamber that constitutes the vacuum chamber so that it can be brought into contact with the vertical receiving edge. Can be opened, so that there is no hindrance to deaeration inside the packaging bag.
[0034]
Further, according to the present invention, it is necessary to manually operate the opening holding member at the time of supplying the packaging bag. In particular, even if the liquid has a large amount of juice, the vacuum / sealing and packaging processing can be performed without worrying about leakage.
[Brief description of the drawings]
1A and 1B show a first embodiment of the present invention, in which FIG. 1A is a plan view of a main part near a discharge part of a vacuum packaging machine, and FIG. 1B is a side view of the main part.
FIG. 2 is a side view of a main part near a discharge unit of a vacuum packaging machine according to a second embodiment of the present invention.
FIG. 3 is a side view showing a conventional general belt-type vacuum packaging machine.
FIG. 4 is a side view showing a conventional belt-type vacuum packaging machine having an arm on a seal table.
[Explanation of symbols]
1, conveying belt 2, pulley 3, discharge unit 4, seal base 5, receiving plate 6, support shaft 7, arm 8, etc. ..Opening pressing member 9 Horizontal receiving member 10 Holding part 11 Body frame 12 Vacuum chamber 13 Chamber
14 ... operating pin 15 ... packaging bag 16 ... opening 17 ... belt-type vacuum packaging machine 18 ... vertical receiving member 19 ... push-down pin 20 ... packaging object 21 ... Surface plate 22 ... deaeration pipe 23 ... seal bar 24 ... supply unit 80 ... non-contact part of opening pressing member

Claims (2)

Equipped with an intermittently moving endless transport belt that fixes a plurality of seal stands for sealing the opening of the packaging bag, and reached the vacuum chamber with the opening side of the packaging bag placed on the seal stand, and vacuum-sealed. Later, in a belt-type vacuum packaging machine that discharges a packaging bag from a reversing part of a conveyor belt to a collection part,
On the side surface of the seal base, one end of an L-shaped arm is pivotally supported rotatably, and an opening holding member parallel to the sealing direction is provided on the other end,
Forming a horizontal receiving side extending from below the shaft support of the arm,
A belt-type vacuum packaging machine characterized in that an operating pin that abuts on a lower portion of a horizontal receiving side is fixed near a discharge portion of a main body frame of the belt-type vacuum packaging machine. A vertical receiving side portion extending from the front of the shaft support portion of the arm member is further formed, and a push-down pin that abuts on the vertical receiving side portion when the vacuum chamber is formed is fixed to an inner surface of the chamber forming the vacuum chamber. The belt-type vacuum packaging machine according to claim 1, wherein:

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