JP4849747B2 - Degassing device for horizontal bag packaging machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a horizontal bag packaging machine that continuously manufactures a bag package by forming a bag from a packaging material traveling in a lateral direction and continuously manufacturing the bag package before sealing the bag supplied with the product. It is related with the deaeration apparatus which presses to and efficiently deaerates the air in a bag.
[0002]
[Prior art]
A horizontal bag making and packaging machine, such as a horizontal pillow packaging machine, is formed in advance by feeding a bag packaging material such as a cylindrical packaging film that runs in the transverse direction in the transverse direction and the product is fed in. A bag packaging body is formed by sealing the rear edge side end portion of the cylindrical bag, and a subsequent bag is formed by sealing the front edge side edge portion of the bag packaging material left on the upstream side of the bag packaging body. It is a packaging machine which can manufacture a bag packaging body continuously by repeating this. The product is usually fed into a cylindrical packaging film by a product supply conveyor, and the packaging film on which the product is placed is conveyed by a conveyance conveyor. In this type of bag wrapping, the sealing of the cylinder end edge on the rear edge side and the front edge side of the bag is usually performed by a horizontal heat sealer that operates in a direction transverse to the cylindrical packaging film, so that interference with the horizontal heat sealer is avoided. In order to avoid this, a shuttle conveyor is used as the transfer conveyor.
[0003]
2. Description of the Related Art Conventionally, in a bag packaging machine, in order to reduce the bulk of a package, deaeration packaging for sealing a bag in a state where a considerable amount of air is discharged from the inside of a bag supplied with a product has been performed. In order to perform deaeration packaging in a horizontal bag packaging machine, broadly, a cylindrical packaging film is formed from a web-shaped packaging film and a deaeration pipe extending inside the bag is inserted into a former into which the product is fed, A nozzle deaeration system that sucks air in the bag through a deaeration pipe when the bag is sealed with a seal, and is pressed by a forced pressing means such as a sponge member before the bag containing the product is sealed with a horizontal seal. The forced deaeration method that pushes out the air in the bag has been devised. As an example in which both systems are used together, for example, there is a deaeration device described in Japanese Patent Application Laid-Open No. 54-20908.
[0004]
However, in the horizontal bag wrapping machine, the following inconveniences may occur when performing deaeration packaging as described above. That is, in the nozzle degassing method, in order to improve the suction efficiency at the time of degassing, if the degassing nozzle is extended to the vicinity of the horizontal sealing means, the degassing nozzle and the product or the cylindrical packaging fee may interfere with each other. There is. Depending on the volume of the bag, it may take time to complete the deaeration, which may limit the packaging capacity of the packaging machine and may not fully exhibit the packaging capacity.
[0005]
In the forced deaeration method using a pressing member such as a sponge, the inside of the bag is not deaerated by suction, so that equipment such as evacuation is not required, and equipment and the cost required to maintain it are reduced. However, this method is a form in which pressure is applied from the outside with a pressing member such as a sponge to push out the air inside the bag, so that depending on the shape of the product, the pressing member presses a part of the product through the packaging film, The pressing member does not press the bag uniformly on the entire surface, and the bag to which the product is supplied is not pressed on the entire surface. Therefore, only part of the pressing member and the bag are pressed against each other, and it is difficult to sufficiently push out the air inside the bag. Depending on the type and nature of the product, the product may be broken or broken when pressed by the pressing member, and the operating speed and pressing force of the pressing member are limited.
[0006]
[Problems to be solved by the invention]
As described above, although the nozzle suction method has high deaeration efficiency, there are many problems due to the provision of the suction nozzle, and the forced deaeration method including the pressing member has a flexible pressing member such as a sponge. Even if it is made of a simple material, it basically remains in the partial pressing of the product, and the deaeration efficiency is hardly improved.
[0007]
Therefore, the problem to be solved by the present invention is that the product is supplied to a bag supplied with a product in a horizontal bag packaging machine that is transported in a state where the product is fed into a bag formed of a packaging material. While restraining the product to some extent From the outside On the entire surface of the bag The idea is to make it possible to deaerate the air present in the bag by applying a gas pressure.
[0008]
An object of the present invention is to carry a bag package continuously by carrying a bag, which is continuously formed in the horizontal direction and into which each product is fed, while placing it, and sealing the opening side end of the bag. In a horizontal bag packaging machine that can be manufactured, Applying gas pressure to the entire surface of the bag from the outside while restraining the product to some extent An object of the present invention is to provide a deaeration device in a horizontal bag packaging machine that enables deaeration packaging while sufficiently exerting the packaging capability of the horizontal bag packaging machine by extruding air existing inside the bag.
[0009]
[Means for Solving the Problems]
A deaeration device in a horizontal bag packaging machine according to the present invention conveys a bag continuously formed in a lateral running direction together with a product fed through an opening side end portion thereof by a conveyor, and is placed on the conveyor. Further, in the horizontal bag wrapping machine capable of continuously manufacturing the bag wrapping body by sealing the opening side end portion of the bag with a sealing means, the product is fed in relation to the conveyor. From above Sealed A chamber for covering, a counter member that accommodates the bag in a state in which the bag can be vented to the outside through the opening side end in cooperation with the chamber, and a pressure supply means for supplying pressure gas into the chamber. Preparation In the chamber, product leveling means is provided for leveling the product by pressing the bag into which the product has been fed from the outside. The product leveling means is applied to the side surface of the bag. A net that can be touched It consists of that.
[0010]
According to the deaeration device in this horizontal bag packaging machine, Arrange The installed chamber removes the bag into which the product is fed from above when degassing. Sealed cover. At this time, the chamber and the opposing member jointly accommodate the bag. In this state, the inside of the bag can be vented to the outside through the opening side end, and when pressure gas is supplied into the chamber from the pressure supply means, In a sealed state By the pressure action of the gas increased in the chamber, the entire bag accommodated in the chamber is pressed evenly, and the air inside the bag is pushed out through the opening side end. Sealing of the bag into which the product has been fed is completed by sealing the opening side end of the degassed bag with the lateral sealing means.
[0011]
In this deaeration device, the transport conveyor is a belt conveyor, and the opposing member is a conveyor belt of the belt conveyor on which the bag is placed and the chamber can be in close contact when the chamber covers the bag. Can do. In a horizontal bag wrapping machine, the bag or bag wrapping body into which the product has been sent must be in a horizontal position and its weight must be supported, but usually the weight is transported to transport the bag or bag wrapping body. Supported by a conveyor. Since the conveyor belt of the transfer conveyor has a flat transfer surface, a sufficient sealing performance can be obtained in cooperation with the chamber when the chamber is crimped, so that it is suitable for use as an opposing member. Further, by using a conveyor belt of an existing transport conveyor as the opposing member, it is not necessary to prepare the opposing member separately, and it is possible to reduce the number of components.
[0012]
In this deaeration device, the facing member may be a receiving chamber that accommodates the transport conveyor and engages the chamber in a close contact manner when the chamber covers the bag. By making the opposing member a dedicated receiving chamber that can be in close contact with the chamber, when the bag is accommodated in the chamber and the receiving chamber, leakage of the pressure gas supplied from the pressure supply means into the chamber is prevented, and high sealing performance is achieved. There is expected. The length of the chamber is about the length of one bag package, and in order to transport the bag over the distance of that length, a corresponding transport means is required. Since the transfer conveyor is accommodated in the receiving chamber, bags and bag packages can pass through the receiving chamber by the transfer conveyor without any trouble.
[0013]
In this deaeration device, the seal means is a horizontal heat sealer having two heater bars that can be sandwiched by moving up and down with respect to the opening side end, and the chamber is supported by a support frame integral with the upper heater bar. It can be. By supporting the chamber on a support frame integrated with the upper heater bar, the drive mechanism of the chamber is simplified, and when the heater bar is brought close to the opening end to seal the opening end of the bag, the chamber is simultaneously used. Also approach the bag and accommodate the bag in cooperation with the opposing member.
[0014]
In the deaeration apparatus in which a chamber is supported by a support frame, the chamber can be supported by an actuator that moves the chamber up and down with respect to the support frame. By moving the chamber up and down with respect to the support frame by the actuator, the chamber is also moved up and down by the actuator separately from the operation mechanism that operates the support frame that supports the heater bar. By configuring in this way, the vertical stroke of the chamber can be made longer, and the chamber can be operated quickly to cope with high-speed packaging.
[0015]
Further, in this deaeration device, the horizontal bag wrapping machine includes a rear edge side end as the opening side end portion of the bag which is formed in advance by the sealing means from the cylindrical packaging material and into which the product is fed. The formation of the bag packaging body by sealing the portion and the subsequent formation of the bag by sealing the front edge side end portion of the cylindrical packaging material left on the upstream side of the bag packaging body It can be set as a bag horizontal type packaging machine. The horizontal bag-making type packaging machine can efficiently produce a bag package and a bag package in which the product is stored every time the product is fed. Further, the packaging material is usually formed into a cylindrical shape by a former, and the product is fed into the bag through the former.
[0016]
Further, in the deaeration device, a product leveling means for leveling the product by pressing the bag into which the product has been fed from the outside is disposed in the chamber. is doing . When deaeration is performed by applying a pressure gas, the product leveling means is pressed against the bag, so that the product supplied into the bag is restrained to some extent from the outside of the bag. Therefore, as the deaeration action progresses, the bag is not distorted, and the packaging form of the bag package is flat and has a reduced bulk and a good appearance. In addition, the product does not move in the bag by the action of the pressure gas, and as a result, a situation in which the product is sandwiched between the sealing means does not occur.
[0017]
In the deaeration device including product leveling means, the product leveling means includes a net body capable of contacting a side surface of the bag, and Has been . By making the product leveling means a net body, it becomes possible to allow the pressure gas to act on the entire surface of the bag through the net while restraining the product to some extent. In particular, it is preferable that the net is configured by knitting elastic yarns and strings, for example, in a lattice shape.
[0018]
In the deaeration device in the horizontal bag packaging machine, the chamber has an opening peripheral portion that opens toward the bag side filled with the product and includes a packing and to which an air hose from the pressure supply means is connected. Each of the packings includes a rear edge side transverse portion that crosses the inside of the bag so as to be able to communicate with the outside in the vicinity of the rear edge side end portion of the bag, and is provided on the opposing member or the bag. The inside of the chamber can be hermetically sealed. By comprising in this way, the bag in which the product is supplied is accommodated in a chamber and an opposing member by making the chamber case opened on the bag side approach a bag with an actuator. The packing provided on the peripheral edge of the opening of the chamber case is placed in a state where the interior of the bag can be vented to the outside at the rear edge side crossing portion that crosses the vicinity of the rear edge side end portion of the bag, and the other portion is opposed. The chamber is kept sealed against the member or in contact with the bag. When pressurized gas is supplied to the chamber via an air hose that constitutes a part of the pressure supply means, the air in the bag is discharged from the inside of the bag to the outside through the rear edge side end.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a deaeration device in a horizontal bag packaging machine according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic side view showing an embodiment of a deaeration device in a horizontal bag packaging machine according to the present invention, FIG. 2 is a perspective view showing a main part of the deaeration device in the horizontal bag packaging machine shown in FIG. It is a perspective view which expands and shows the chamber used for the deaeration apparatus in the horizontal bag packaging machine shown in FIG.
[0020]
As shown in FIGS. 1 to 3, a deaeration device (hereinafter abbreviated as “deaeration device”) 1 in a horizontal bag packaging machine according to the present invention is applied to a horizontal bag making and packaging machine 20. The horizontal bag making and packaging machine 20 forms a web-shaped packaging film Fw, which is a packaging material, into a cylindrical packaging film Ft by a former 21 and a bag B formed in advance from the cylindrical packaging film Ft. ₁ The product A is sent to the product conveyor 22 and the bag B into which the product A is sent ₁ Forming the bag package P by sealing the rear edge side end b (see FIG. 3) which is the open end of the bag with the lateral seal means 23, and the subsequent bag B ₂ Bag (B) by sealing the front edge side end c (see FIG. 3) of ₁ , B ₂ ). The horizontal bag making and packaging machine 20 is loaded with the product A through the interior of the former 21 and travels on the outer peripheral surface of the former 21 while the cylindrical packaging film Ft is guided in the lateral direction. In order to form the tubular packaging film Ft, in association with the former 21, a paper drawing roller 24 that engages with both edges of the web-shaped packaging film Fw and a vertical sealing roller 25 can be assembled.
[0021]
On the downstream side of the former 21, conveying conveyors 26, 27, and 28 for conveying the cylindrical packaging film Ft into which the product A has been fed are arranged in tandem. Between the conveyors 26 and 27, a horizontal sealing means 23 for performing a horizontal seal on the cylindrical packaging film Ft is disposed. The horizontal sealing means 23 is composed of a pair of heater bars 30 and 31 that are arranged opposite to each other and operate in synchronization with each other, and each heater bar 30 and 31 is formed in advance and is a bag B filled with the product A. ₁ Heat sealers 32 and 32 for sealing the rear edge side end b, and the subsequent bag B ₂ The heat sealers 33 and 33 are provided for sealing the front edge side end c. The lateral sealing means 30 includes a bag B in the upper heater bar 30. ₁ Bag B followed by bag package P completed using ₂ A cutting tool 34 such as a cutter for separating from the cutting tool is incorporated. In the conveyors 26 and 27, when the horizontal sealing means 23 is in an inoperative state, the carry-out side end 26a and the carry-in side end 27a advance to the position of the horizontal sealing means 23, and the product A is supplied. The cylindrical wrapping film Ft is helped to be delivered, and when the horizontal sealing means 23 is in an operating state, it can be a shuttle type conveyor in which the carry-out side end portion 26a and the carry-in side end portion 27a are retracted from the horizontal seal means 23.
[0022]
The deaeration device 1 is disposed in the vicinity of the horizontal sealing means 23, that is, above the conveying conveyor 26 in the downstream direction of the cylindrical packaging film Ft, and the bag B filled with the product A ₁ Open to the wide mouth and bag B to each other ₁ It is provided with a chamber 2 that is driven in such a manner as to approach and leave. The chamber 2 has one chamber case 3. The deaeration device 1 also has a conveyor belt 36 of the transfer conveyor 27, and a bag B to which the product A is supplied. ₁ Is used as a counter member in cooperation with the chamber 2. As shown in FIGS. 2 and 3, the opening peripheral edge portion 3 a of the chamber case 3 has an annular shape that makes a round shape in a square shape, and an elastic packing 4 is disposed on the end surface thereof. When the chamber case 3 approaches the conveyor belt 36 as an opposing member, the packing 4 ₁ Rear edge b and bag B ₁ Between the product A supplied in the inside, preferably upstream of the product A and the bag B ₁ Bag B at a position immediately downstream of the rear edge side end b ₁ The rear edge side crossing portion 4a crossing the bag B and the bag B ₁ And a front edge side transverse portion 4c sandwiching the sealed front edge side end portion c. The rear edge side transverse portion 4a of the packing 4 is a bag B ₁ Is not completely sandwiched and the overall pressing force is weak or the bag B ₁ A non-pressing part exists so that the inside can communicate with the outside.
[0023]
When the chamber case 3 approaches the conveyor belt 36 and the opening peripheral edge 3a is joined to the conveying surface 37 of the conveyor belt 36, the transverse portions 4a and 4c on the front and rear sides are the bags B. ₁ And the bag B between the conveyor belt 36 and the conveying surface 37. ₁ By sandwiching the bag B ₁ Regulates blindness. Portions 4b and 4b other than the transverse portions 4a and 4c of the packing 4 are bags B ₁ In close contact with the conveying surface 37 of the conveyor belt 36, the chamber 2 cooperates with the conveyor belt 36 to form the bag B ₁ A bag B that wraps the product A, except for the rear edge side end b and the front edge side edge c, in a state where the inside of the bag can be vented to the outside through the rear edge side end b. ₁ Accommodates the main part of.
[0024]
The chamber 2 is connected to the bag B by an actuator 41 such as an air cylinder with respect to the support frame 40 that supports the heater bar 30 on the upper side of the lateral seal means 23. ₁ Are driven synchronously in the direction of advance and retreat. When the horizontal sealing means 23 is operated, the upper heater bar 30 is pressed against the cylindrical packaging film Ft for sealing, so that the support frame 40 itself is also moved up and down by an appropriate operating mechanism 42 such as an actuator or a cam link. In addition to the operation mechanism 42, the chamber 2 is additionally operated by the actuator 41, so that the vertical stroke of the chamber 2 is larger than the vertical movement obtained only by the operation mechanism 42, and the chamber 2 operates faster. Can be used for high-speed packaging.
[0025]
The deaeration device 1 also includes pressure supply means 5 that supplies a pressure gas into the chamber 2. The pressure supply means 5 includes a pressure source such as a compressor and a pressure tank, and an air hose 6 that connects the pressure source and the chamber case 3. Furthermore, in the chamber case 3, a bag B for wrapping the product A ₁ A bag B that accompanies deaeration by contacting one side of ₁ The product leveling means 7 for correcting the distortion of the package P and flattening the side surface of the package P is disposed.
[0026]
As shown in FIG. 3, the product leveling means 7 is configured as a net body composed of a reinforcing frame 8b arranged transversely to the outer frame 8a, and a net 9 stretched over a region surrounded by each outside. Is preferred. In particular, the net 9 is formed by knitting elastic yarns and strings, for example, in a lattice shape, ₁ It is preferable that the contact can be made with an elastic force. By making the product leveling means 7 a net body, the bag B accommodated in the chamber 2 through the net 9 while the product A is restrained to some extent. ₁ Can act on the sides of The product leveling means 7 may be a thin rubber sheet having a large number of ventilation holes. Also, the product leveling means 7 can be ₁ Therefore, another actuator may be provided outside the chamber case 3.
[0027]
Hereinafter, the operation of the embodiment will be described. As shown in FIG. 1, when the horizontal sealing means 23 is retracted, the chamber 2 is also retracted, and the deaeration device 1 is in an inoperative state, the horizontal bag making and packaging machine 20 is operated and the bag B ₁ Product A is fed into the cylindrical packaging film Ft. The feeding amount of the product A in one packaging is set to an amount that fits in the chamber 2.
[0028]
When the feeding of the product A into the cylindrical packaging film Ft is completed, the cylindrical packaging film Ft is further run, and the front edge side end c is sealed by the lateral sealing means 23 to form the bag B ₁ Is formed. At this stage, bag B ₁ Is continuous with the cylindrical packaging film Ft and is a part of the cylindrical packaging film Ft. Furthermore, the cylindrical packaging film Ft is run for the packaging at a time, and the bag B ₁ Reaches the conveyor 27 shown in the figure. When the chamber 2 is lowered by the operation of the operation mechanism 42 and the actuator 41, the product leveling means 7 is moved to the bag B. ₁ The chamber case 3 is brought into contact with the flat conveying surface 37 of the conveyor belt 36. In this state, the product leveling means 7 has the bag B according to the rigidity of the outer frame 8a and the reinforcing frame 8b. ₁ Net 9 is the product A bag B ₁ It is in a state where it is restricted to the extent that it does not move freely within, but bag B ₁ Air still remains inside.
[0029]
As the chamber case 3 descends and abuts on the conveying surface 37 of the conveyor belt 36, the rear edge side and the front edge side transverse portions 4a and 4c of the packing 4 are formed in the bag B. ₁ A bag B which wraps the product A by engaging the rear edge side end b and the vicinity thereof and the sealed front edge side end c. ₁ The product A is regulated by the product leveling means 7 and the product A is regulated in a sealed state in the chamber 2 as a whole. Packing 4 is bag B ₁ By engaging the bag B during the deaeration operation ₁ Blindness is regulated. Packing 4 is bag B ₁ In the rear edge side crossing portion 4a that crosses the vicinity of the rear edge side end b, the bag B has a low pressing force or a non-pressing portion. ₁ Is in a state in which it can be ventilated into the tubular packaging film Ft through the rear edge side end b.
[0030]
Next, compressed air is supplied as pressure gas from the pressure supply means 5 into the chamber 2 through the air hose 6. The compressed air supplied into the chamber 2 has a low pressing force at the trailing edge side transverse portion 4a or a non-pressing portion, so that the bag B is being degassed. ₁ In comparison with the internal pressure, although there is a slight leakage, the leakage from the space between the conveying surface 37 of the conveyor belt 36 is not substantially leaked to the outside due to the sealing performance of the packing 4 as a whole. Bag B contained in chamber 2 ₁ Is pressed by gas pressure, bag B ₁ The inside air is pushed out into the tubular interior of the tubular packaging film F by pushing open the weakly pressing portion or through the non-pressing portion of the rear edge side crossing portion 4a of the packing 4, and the bag B ₁ Deaeration is performed. Since the product leveling means 7 is composed of the net 9, the gas pressure supplied into the chamber 2 is passed through the net 9 to the bag B ₁ It works evenly. In particular, when the net 9 is formed by knitting a thread or string having elasticity, for example, in a lattice shape, ₁ When the bag shrinks, the bag B follows the deformation caused by the shrinkage. ₁ Can continue to press bag B ₁ This prevents the distortion of the bag and maintains the shape of the bag package P after being deaerated substantially flat.
[0031]
Next, the side seal means 23 causes the bag B in the deaerated state. ₁ By sealing the rear edge side end b, bag B ₁ Is sealed to complete the bag package P, and at the same time, the subsequent bag B ₂ The front edge side end portion c is sealed. By incorporating the cutting tool 34 into the lateral sealing means 23, the bag package P is made to follow the bag B. ₁ Can be separated from Completion of bag package P and subsequent bag B ₁ Formation and bag B ₁ By repeating the feeding of the product A to the bag, the bag package P is continuously manufactured.
[0032]
Another embodiment of the deaeration device in the horizontal bag packaging machine according to the present invention is shown in FIG. 4 which is a schematic side view. In the deaeration device shown in FIG. 4, the same reference numerals are given to members and parts having the same functions as the components shown in FIGS. In the deaeration device 51 of this embodiment, the bag B corresponds to the upper chamber 52. ₁ A receiving chamber 53 is disposed as a counter member on the lower side of the sheet. The chamber 52 has the same configuration as the chamber 2 in the embodiment of FIGS. The receiving chamber 53 is attached to a support frame 54 to which the lower heater bar 31 of the horizontal seal means 23 is attached via a support rod 55, and moves up and down in synchronization with the operation of the lower heater bar 31. Receiving chamber 53 is bag B ₁ A transport conveyor 56 that supports and transports the interior of the transport conveyor 56 is received. The transport conveyor 56 is received between the chamber 53 and a seal member having flexibility and sealing properties such as rubber boots. It is preferable to support the apparatus frame independently of the receiving chamber 53 by a conveyor support member that is hermetically sealed so as to be movable relative to the chamber 53 in the vertical direction. Further, the receiving chamber 53 can be supported by elastic means such as a spring. In this case, a cable for driving / controlling the transport conveyor 56 is wired through the support rod 54.
[0033]
Chamber 52 is bag B ₁ When opening the cover, the peripheral edge of each opening is the bag B ₁ They can be in close contact with each other, except that they contact the rear edge side end b and the front edge side end c. Bag B with chamber 52 and receiving chamber 53 ₁ , The pressure gas supplied from the pressure supply means 5 into the chamber 52 is prevented from leaking with the receiving chamber 53 as an opposing member, and high sealing performance is expected. Since the transfer conveyor 56 is accommodated in the receiving chamber 53, the bag B ₁ The bag package P passes through the receiving chamber 53 by the transfer conveyor 56 without any trouble. Since the deaeration action of the deaeration device 51 other than that the opposing member is the receiving chamber 53 is the same as that of the previous embodiment, the description thereof will be omitted. Since the transport conveyor 56 cannot be a shuttle conveyor, the transport conveyors 26 and 28 before and after the transport conveyor 56 are connected to the transport conveyor 56 beyond the lateral seal means 23 or close to the receiving chamber 53. It is a shuttle type conveyor.
[0034]
【The invention's effect】
A deaeration device in a horizontal bag packaging machine according to the present invention conveys a bag continuously formed in a lateral running direction together with a product fed through an opening side end portion thereof by a conveyor, and is placed on the conveyor. Further, in the horizontal bag wrapping machine capable of continuously manufacturing the bag wrapping body by sealing the opening side end portion of the bag with a sealing means, the product is fed in relation to the conveyor. From above Sealed A chamber for covering, a counter member that accommodates the bag in a state in which the bag can be vented to the outside through the opening side end in cooperation with the chamber, and a pressure supply means for supplying pressure gas into the chamber. So that the chamber and the opposing member can Sealed The bag is pressed evenly by gas pressure such as compressed air supplied into the chamber from the pressure supply means, so that the air inside the bag is pushed out through the opening end and deaerated. Is called. Sealing of the bag for wrapping the product is completed by sealing the opening side end of the degassed bag with the lateral sealing means. Therefore, since the bag is efficiently deaerated in the horizontal bag packaging machine, the deaeration device can be incorporated in the horizontal bag packaging machine without impairing its high packaging capacity.
[0035]
In the chamber, there is a product leveling means for leveling the product by pressing the bag into which the product has been sent from the outside, which consists of a net body that can contact the side of the bag. If the product is deaerated with the product leveling means pressed against the bag, the product in the bag will be regulated to some extent from the outside of the bag during the deaeration, which is seen in the conventional deaeration using a deaeration pipe. Such as generation of wrinkles in the horizontal seal portion, occurrence of bridges in the cylindrical packaging material, breakage of the bag, biting of the product during horizontal sealing, distortion of the bag package, etc. In other words, a bag package having a flat packaging shape with a flat side surface, reduced bulk, and good appearance can be obtained. The product leveling means consists of elastic strings and sheets, so even if the product leveling means increases the approach speed to the bag and the product is a fragile food product such as a cookie, the product A is not damaged. Further, since the air inside the bag is pushed out by pressurizing the bag with compressed air from the outside, products suitable for packaging are not limited. Furthermore, since the pressure of the pressurized air can be easily adjusted, the deaeration and packaging capacity can be easily increased according to the properties of the product and the packaging amount.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing an embodiment of a deaeration device in a horizontal bag packaging machine according to the present invention.
FIG. 2 is an enlarged perspective view showing a part of the deaeration device shown in FIG. 1;
FIG. 3 is an enlarged perspective view showing a chamber used in a deaeration device in the horizontal bag packaging machine according to the present invention.
FIG. 4 is a schematic side view showing another embodiment of the deaeration device in the horizontal bag packaging machine according to the present invention.
[Explanation of symbols]
1,51 Deaerator 2 chamber
3 Chamber case 3a Open end
4 Packing 4a Rear edge side crossing part
5 Pressure supply means 6 Air hose
7 Product leveling means 8 Outer frame
9 Net
20 Horizontal bag making and packaging machine 21 Former
22 Product conveyor 23 Horizontal sealing means
26, 27, 28 Conveyor 30, 31 Heater bar
36 Conveyor belt 37 Conveying surface
40 Support frame 41 Actuator
53 Receiving chamber 54 Support frame
56 Conveyor
A Product B ₁ Leading bag B ₂ Trailing bag
b Open end (rear edge end) c Front edge end
Ft Cylindrical packaging film P Bag packaging

Claims (7)

A bag formed continuously in the lateral running direction is transported by a conveyor along with the product fed through the opening end, and the opening end of the bag placed on the conveyor is sealed by a sealing means. In a horizontal bag packaging machine capable of continuously producing a bag package by sealing, a chamber disposed in relation to the transport conveyor and covering the bag into which the product has been fed is sealed from above. a facing member for housing with its interior the bag in cooperation with the chamber allowed vented to the outside through the open end, and a pressure supply means for supplying a pressurized gas into said chamber, said In the chamber, product leveling means for leveling the product is arranged by pressing the bag into which the product has been fed from the outside, and the product leveling means can contact the side surface of the bag. Degassing device in a horizontal bag packaging machine, which consists of a net body.   2. The conveyor according to claim 1, wherein the conveyor is a belt conveyor, and the opposing member is a conveyor belt of the belt conveyor on which the bag is placed and the chamber can be in close contact when the chamber covers the bag. The deaeration apparatus in the horizontal bag packaging machine of description.   2. The horizontal bag packaging machine according to claim 1, wherein the facing member is a receiving chamber that accommodates the transport conveyor therein and engages the chamber in close contact with the chamber when the chamber covers the bag. Deaeration device.   The sealing means is a horizontal heat sealer having two heater bars which can be sandwiched by moving up and down with respect to the opening side end portion, and the chamber is supported by a support frame integrated with the upper heater bar. Item 4. A deaeration device for a horizontal bag packaging machine according to any one of Items 1 to 3.   The deaeration apparatus for a horizontal bag packaging machine according to claim 4, wherein the chamber is supported via an actuator that moves the chamber up and down relative to the support frame. In the horizontal bag packaging machine, the bag is formed by sealing a rear edge side end as the opening side end of the bag formed in advance from a cylindrical packaging material and fed with the product by the sealing means. From the bag-making horizontal packaging machine that repeats the formation of the packaging body and the subsequent formation of the bag by sealing the front edge side end of the cylindrical packaging material left on the upstream side of the bag packaging body. The deaeration apparatus in the horizontal bag packaging machine according to any one of claims 1 to 5 . The chamber includes a chamber case that has an opening peripheral portion that is open facing the bag side filled with the product and includes a packing and to which an air hose from the pressure supply unit is connected. A rear edge side crossing portion that crosses the inside of the bag so as to be able to communicate with the outside in the vicinity of the rear edge side end portion of the bag, and seals the inside of the chamber in close contact with the opposing member or the bag. The deaeration apparatus in the horizontal bag packaging machine according to any one of claims 1 to 6 .

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