JP2017030845A - Automatic opening device of bag body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device which, while conveying a resin bag body storing a liquid content containing a solid matter arbitrarily, automatically and reliably opens the bag body on a conveyance passage, discharges a fragment of a cut bag body, and discharges the content without entry of a foreign matter.SOLUTION: A resin bag body 4 is stored in a tray equipped with a cassette part moving on a conveyor 1, moved along a conveyance passage of the conveyor, and guided to a cutting unit by a pair of guide rails 12 provided to guide the bag body. A pair of rotary rollers in the cutting unit sandwiches an upper part of the bag body. A rotary blade provided at a central part of one of the pair of rotary rollers 13 rotates inside a circumferential groove provided along a position of the other rotary roller which comes into contact with the rotary blade and cuts the bag body.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a bag body automatic opening device for automatically opening a resin-made bag body containing liquid contents optionally containing solids and taking out the contents to the outside.

  As a food container that supports the current eating habits, various plastic films and resin-made bag-like containers (hereinafter referred to as “bags”) obtained by further processing these plastic films are frequently used.

  In particular, pouch bags, which are made of a film made by laminating (laminating) synthetic resin such as polypropylene and polyester, and aluminum foil, have the property of blocking air, moisture and light and sealing the food inside. The food obtained by filling the food in a pouch bag and sterilizing it by heating under pressure at 120 ° C. for 4 minutes or equivalent in the middle of the food inside the container is a retort pouch food or It is called pressurized food (hereinafter referred to as “pouch food”). These foods that can be distributed and stored at room temperature are rapidly spreading and used as processed foods instead of canned foods.

  Originally, many pouched foods in bags are subdivided so that consumers can enjoy foods that are easy to open and taste good when they eat at the table. In order to open these pouch foods, it is common to open the cuts in the upper part of the bag with bare hands, cut with scissors, or open with a tongue (Patent Document 1).

  On the other hand, taking advantage of the characteristics of pouch foods, food materials are increasingly sterilized by heating under the same conditions as pouch foods using larger bags and distributed as commercial products. The reason is that it is simpler and more cost effective than the can. However, the operation of opening a large amount of these large bags is cumbersome and requires a lot of human power and time. In food factories, scissors, tongs and other tools are themselves foreign objects and prevent foreign substances from entering. From the viewpoint of, it is preferable not to use.

  In addition, when opening a pouch bag filled with sterilized food ingredients, foreign matter such as dust attached to the surface of the pouch bag, or a broken piece of the bag that is generated by cutting at the time of opening is considered in food hygiene. It was a big problem.

  Conventionally, there are some proposals related to opening a bag body such as a pouch bag containing a liquid content optionally containing solid matter. For example, there is a method (Patent Document 2) in which the heat-sensitive ends of a flexible pouch, particularly the pouch mouth, are opened by heating (Patent Document 2). Depending on the state of the bag body, an unopened one may be generated, and the apparatus used in this method is unsuitable for an automatic bag opening apparatus in combination with a conveyor that conveys the bag body.

  Further, as another proposal, a bag opening device for opening a bag with a cut formed near the upper end of the side part, the holding means for holding the upper end side from the cut in the side of the bag, A holding means for holding the lower end side from the cut edge in the side portion, and a moving means for moving the holding means relative to the holding means, and by moving the holding means in a single plane by the moving means, tearing from the cut edge Although there is a bag opening device (patent document 3) characterized by opening a bag, this opening device is not suitable for opening a bag body without a cut end.

  As another proposal, in a bag opening device for opening a bag containing powdered or liquid contents and taking out the contents in the bag, the outer surface of the bag A close contact means that forms a closed space that is in close contact with the outside while covering the portion; and the bag body is opened in the closed space formed by the close contact means contacting the outer surface of the bag body. A dissolution tank for mixing and dissolving the contents taken out of the bag body with water via a pipe connected to the bottom surface side of the contact means. A bag body opening device characterized in that the contents in the bag body can be dissolved and accommodated in the dissolution tank by circulating water between the dissolution tank and the bag body and the closed space. There is a patent document 4), which is a bag used in this proposal. The outer surface of H is brought into close contact by the suction means 7 sucking at a negative pressure, but the outer surface of the bag H is flat and solid, that is, suitable for a box-shaped bag, A resin-made bag body containing a liquid content optionally containing an object is not suitable because it is difficult to sufficiently suck.

  Accordingly, there has been a demand for a proposal for automatically and safely automatically opening a resin bag body such as a pouch bag, particularly a large-capacity bag body.

Utility Model Registration No. 3190063 JP-T-2006-509663 JP 2005-271945 A Japanese Patent No. 5077912

  An object of the present invention is to automatically open a resin bag used on a retort pouch food etc. on a conveyor while discharging it on a conveying path, to discharge a cut bag fragment, and to mix foreign matter. It is to provide a device for discharging the contents.

  The present inventors have conventionally transported a resin-made bag body containing liquid contents optionally containing solids by a conveyor, and a person opens the upper part using a tongue or the like, and discharges the contents. This time, this work was automated to investigate whether it would be possible to increase efficiency and reduce the number of personnel required for the work.

  Therefore, a pair of guide rails are provided for guiding the bag body by accommodating the resin-made bag body in a tray on which a cassette portion that moves on the transport conveyor is mounted, and moving along the transport path of the conveyor. To the cutting unit, a pair of rotating rollers in the cutting unit sandwich the upper part of the bag body and transmit the rotation to the bag body, and a rotating blade provided at the center of one of the pair of rotating rollers, It was confirmed that the bag was cut very smoothly when fitted into a circumferential groove provided on the rotating roller and rotated.

  Furthermore, the present invention has been completed by examining various conditions that allow the bag body to be cut without any problem even if the conveying speed of the conveyor is increased, and adding ingenuity to prevent foreign matters from being mixed.

Thus, the present invention provides the following.
[1] A resin-made bag body containing a liquid content optionally containing a solid material is sandwiched and held in an upright posture, a tray on which the cassette portion is placed, and the tray is transported A conveyor, and a tunnel-type cutting unit disposed along the conveyance path of the conveyor,
The tunnel-type cutting unit includes a housing, a pair of adjacent rotating rollers, a rotating motor that drives one of the rotating rollers, a speed adjusting mechanism that controls a rotating speed of the rotating motor, and the bag in the housing. A pair of guide rails for guiding the body to the rotating roller,
Two axes of the pair of rotating rollers are arranged in a direction perpendicular to the conveyor surface, and a straight line connecting the center points of the two axes is arranged to be orthogonal to the traveling direction of the conveyor Because
One of the pair of rotating rollers is provided with a concentric rotating blade near the center in the longitudinal direction, and the other rotating roller is provided with a circumferential groove corresponding to the rotating blade,
When the bag body sandwiched between the cassette portions placed on the tray is conveyed by the conveyor and reaches the guide rail, the housing moves in parallel with the traveling direction of the conveyor, and the pair of rotations A rotating blade guided to a roller and concentrically provided on one of the pair of rotating rollers fits into a circumferential groove provided on the other rotating roller and rotates to cut the bag body. An automatic bag opening device, characterized in that the bag body is opened.
[2] A conveyor for transporting a resin bag containing liquid contents optionally containing solids, and a tunnel-type cutting unit disposed along the transport path of the conveyor,
The tunnel-type cutting unit includes a housing, a pair of adjacent rotating rollers, a rotating motor that drives one of the rotating rollers, a speed adjusting mechanism that controls a rotating speed of the rotating motor, and the bag in the housing. A pair of guide rails for guiding the body to the rotating roller,
Side free rollers facing both sides via the conveyor are provided, and the sealed portion of the bag body to be conveyed is guided so as to be parallel to the traveling direction of the conveyor,
Two axes of the pair of rotating rollers are arranged in a direction perpendicular to the conveyor surface, and a straight line connecting the center points of the two axes is arranged to be orthogonal to the traveling direction of the conveyor Because
One of the pair of rotating rollers is provided with a concentric rotating blade near the center in the longitudinal direction, and the other rotating roller is provided with a circumferential groove corresponding to the rotating blade,
When the bag body is conveyed by the conveyor while being guided by the side roller, and reaches the guide rail, it moves in the housing in parallel with the traveling direction of the conveyor, and is guided to the pair of rotating rollers, A rotating blade provided concentrically on one of the pair of rotating rollers is fitted into a circumferential groove provided on the other rotating roller and rotates to cut and open the bag. An automatic opening device for bags.
[3] The automatic opening device according to [1] or [2], wherein a circumferential speed of the rotating roller is 1.05 to 1.35 times the moving speed of the conveyor.
[4] The pair of guide rails are arranged in the housing in parallel with the traveling direction of the conveyor so that the guide rails are opened outward on the side on which the conveyed bag body enters. The automatic opening device according to any one of [1] to [3], which is bent.
[5] A cleaning unit is provided upstream of the tunnel-type cutting unit,
The cleaning unit includes a cleaning nozzle that sprays cleaning water onto the bag body;
The automatic opening device according to any one of [1] to [4], comprising a guide rail that guides the movement of the bag.
[6] A discharge unit is provided in the tunnel-type cutting unit,
The discharge unit includes a discharge nozzle that injects compressed air;
The automatic opening device according to any one of [1] to [5], further comprising a discharge unit that stores the cut piece of the bag.
[7] A plurality of pairs of ironing rollers are provided on the upstream side of the rotating roller,
The plurality of pairs of ironing rollers are lengthwise sequentially from the upstream side toward the downstream side, and lower ends thereof are sequentially lowered toward the downstream side, according to any one of [1] to [6]. Automatic opening device.
[8] A sensor for detecting the arrival of the bag body is provided on the downstream side of the tunnel-type cutting unit, and the conveyor is automatically stopped when the arrival of the opened bag body is detected by the sensor. The automatic opening device according to any one of [1] to [7].
[9] The automatic opening device according to any one of [1] to [8], wherein the position of the tunnel-type cutting unit in the height direction with respect to the conveyor can be adjusted according to the size of the bag.
[10] Any one of [1] to [9], comprising a net-like member that allows the liquid in the bag to flow out when the opened bag is turned over and captures the bag. The automatic opening device described in 1.
[11] A step of transporting the bag body made of resin containing the solid content optionally containing the solid content in a substantially horizontal direction by a conveyor;
Cutting and opening the bag body to be transported by a pair of rotating rollers,
One of the pair of rotating rollers is provided with a concentric rotating blade in the vicinity of the central portion in the longitudinal direction, and the other rotating roller is provided with a circumferential groove corresponding to the rotating blade. And automatically opening the bag.

  By using the automatic opening device of the present invention, it is possible to reliably and efficiently open the bag made of resin used for retort pouch food etc. on the transfer path while conveying it with a conveyor, and a large number of workers are required. The bag body can be opened. Further, since there is almost no foreign matter such as a cut piece of the bag in the discharged contents, it is very preferable in terms of food hygiene.

FIG. 1 is a schematic diagram showing a series of flow of an automatic opening process by an automatic bag opening device according to the present invention. FIG. 2 is a view showing the cassette part 2, the tray 3, and the pouch bag 4 loaded in the cassette part 2. FIG. 3 is a schematic diagram of the inside of the cleaning unit. 3-1 is a schematic view of the internal structure of the cleaning unit as viewed from the side of the conveyor. 3-2 is a schematic diagram showing the internal structure of the cleaning unit as seen from the direction of travel of the conveyor and the state in which cleaning water is jetted from the shower nozzle 11 around the pouch bag. FIG. 4 is a schematic diagram of the cutting unit. 4-1 is a schematic diagram showing a state in which the pouch bag advances from the back side to the front side of the internal structure of the cutting unit and is captured by the rotating roller. 4-2 is a schematic view showing a rotary blade and a circumferential groove. 4-3 is a schematic diagram showing a rotating roller, a rotation adjusting mechanism, a rotating direction of the rotating roller, and a traveling direction of the tray. FIG. 5 is a view showing a discharge unit in the cutting unit. FIG. 6 is a schematic view showing the structure of the guide rail and how the pouch bag advances in the guide rail. FIG. 7 is a diagram showing a structure in the cutting unit. FIG. 8 is a schematic diagram showing the second embodiment. FIG. 9 is a schematic external view of the ironing roller.

  An automatic opening device for a bag according to the present invention (hereinafter referred to as “automatic opening device”) includes a cassette section for sandwiching a resin-made bag containing a liquid content optionally containing a solid, and the cassette The tray which mounts a part, the conveyor which conveys this tray, and the tunnel type cutting | disconnection unit arrange | positioned along the conveyance path | route of this conveyor are provided.

  The tunnel-type cutting unit includes a housing and a pair of rotating rollers arranged in the housing so as to face in a direction perpendicular to the conveyor surface and so that the two shafts are perpendicular to the traveling direction of the conveyor. A rotation motor for driving one of the rotation rollers, a speed adjustment mechanism for controlling the rotation speed of the rotation motor, and a pair of guide rails for guiding the bag body to the rotation roller in the housing. Yes.

  One of the pair of rotating rollers is provided with a concentric rotating blade in the vicinity of the central portion in the longitudinal direction, and the other rotating roller is provided with a circumferential groove corresponding to the rotating blade.

  In addition, the pair of guide rails are arranged in the housing in parallel with the traveling direction of the conveyor, for example, and the guide rails are opened outward on the side of the opening where the conveyed bag body enters the housing. It can be bent to form.

  The automatic opening device of the present invention automatically cuts the bag body by the following mechanism in the tunnel type cutting unit. That is, when the bag body sandwiched between the cassette portions placed on the tray is conveyed by the conveyor and reaches the guide rail, it is captured by the opening and moves in the housing in parallel with the traveling direction of the conveyor. Then, the rotary blades guided to the pair of rotating rollers, concentrically provided on one of the pair of rotating rollers are fitted into a circumferential groove provided on the other rotating roller, and rotated. The bag is cut and opened.

  The conveyor used in the present invention is not particularly limited in form, but is a roller conveyor which is a device for fixing a cylindrical roller that rotates on a frame (frame) at a right angle, and placing and moving a transported object thereon, Examples thereof include a belt conveyor which is a device for rotating a wide belt in a ring shape on a carriage and placing a transported article thereon to move the belt.

  As a resin-made bag body (hereinafter sometimes referred to as a “pouch bag”) containing a liquid content optionally containing solids, used in the present invention, for example, “retort pouch food quality labeling standard” (December 19, 2000 Ministry of Agriculture, Forestry and Fisheries Notification No. 1680) “Retort Pouch Food” Definition of “Plastic film or metal foil, or a combination of these in multiple layers” Container (limited to those having airtightness and light-shielding properties) ", but need not be airtight and light-shielding. Anything can be used as long as it can be filled and transported, and is not limited.

  Although the capacity of the pouch bag is not particularly limited, a capacity of about 0.5 to 30 liters can be given.

  Further, the height of the pouch bag is such that when the pouch bag is sandwiched between cassette parts and placed on a tray, the cutting portion at the top of the pouch bag is captured by a rotating roller and can be cut with a rotating blade. I just need it. However, if the height of the pouch bag is insufficient, a thick spacer is placed in the tray to increase the distance between the tray and the conveyor surface, or the conveyor itself in the cutting unit is higher than other conveyors. Alternatively, the height of the cutting unit may be adjusted by providing a height adjusting mechanism (joint) in the cutting unit itself, and the rotating roller may be brought closer to the conveyor surface.

  In the present invention, the cassette portion that holds the pouch bag and holds it in an upright position means that when the pouch bag is held in the cassette portion, the cassette portion moves together with the tray and rotates with a rotating blade in the cutting unit. When cutting the pouch bag with a roller, to fix the pouch bag so that the upper part of the pouch bag is properly captured by a rotating roller, and to assist the pouch bag to stand upright in a direction perpendicular to the conveyor surface It is a holding tool. The cassette portion may have any property and form as long as it has such a function. For example, if a wire net-like holder shown in FIG. 2 is used, the pouch bag is fixed and the pouch bag is placed on the conveyor. It is possible to stand upright and hit the rotary blade at an appropriate position in the upper part of the pouch bag in the cutting unit.

  In addition, the tray used in the present invention is placed between a pair of guide rails provided for guiding the pouch bag and the conveyor surface. As long as the tray and the cassette portion can pass through the cutting unit, any properties and forms may be used. For example, a commercially available resin plastic container as shown in FIG. The plastic container is loaded with a cassette portion sandwiching the pouch bag of FIG. 3, moves on a conveyor, and is guided to a cleaning unit, a cutting unit, and the like. In addition, you may use what integrated the cassette part and the tray.

  In the automatic opening device of the present invention, the cassette unit and the tray can be made unnecessary by providing the side roller that faces both sides via the conveyor. The opposing side surface roller has a function of holding the pouch bag in an upright posture while holding both side surfaces of the pouch bag, and is rotatably supported on both sides of the conveyor. The side roller may be provided on the entire conveyor or a part thereof.

  Next, in the present invention, a cleaning unit can be provided upstream of the tunnel type cutting unit. The cleaning unit includes a cleaning nozzle that injects water into the bag body, and a guide rail that guides the movement of the bag body. For example, the external appearance of the cleaning unit is a rectangular parallelepiped structure, and has a tunnel-type housing structure having openings at the inlet and outlet. In addition, for example, a shower nozzle (cleaning nozzle) in which a pipe connected from the outside of the housing to the inside of the housing is disposed in the cleaning unit and the cleaning water can be sprayed toward the pouch bag on the side surface of the pipe. The cleaning unit is configured to perform cleaning by spraying cleaning water from the shower nozzle to the entire pouch bag and the cassette unit while the cassette unit holding the pouch bag passes through the cleaning unit, and It has a structure in which a pair of guide rails provided for guiding the bag body are provided.

  The tray that moves on the conveyor by the movement or rotation of the rollers and belts of the conveyor is not forcibly fixed on the conveyor, but has a degree of freedom in movement. When the tray reaches the cleaning unit, the tray is guided by the guide rail and passes through the cleaning unit. When the tray passes, the cleaning water sprayed from the cleaning nozzle provided in the cleaning unit is supplied to the pouch bag. It will be received from both sides, thereby removing deposits such as dust adhering to the pouch bag surface. The cleaning water sprayed from the cleaning nozzle may be tap water, but ozone water, alkaline ionized water, water irradiated with ultraviolet rays, and water sterilized by ultrafiltration are effective for sterilization and cleaning of the pouch bag surface. It is more preferable because it can be performed automatically. In addition, if the spray of the cleaning water from the cleaning nozzle is at a high pressure (about 4 to 30 MPa), it is possible to remove deposits that are difficult to remove on the pouch bag surface. In some cases, it is also effective to remove the adhering matter by setting the washing water to warm water to hot water of about 30 ° C. to 90 ° C.

  Further, the two surfaces of the entrance and exit of the tunnel type cleaning unit may be completely opened or may be shielded by a plurality of strip-shaped vinyl curtains. The shielding with the vinyl curtain is preferable because the washing water is not scattered and the washing water is efficiently sprayed into the pouch bag in the washing unit.

  Next, the tunnel type cutting unit constituting the present invention will be further described. The tunnel-type cutting unit has a pair of adjacent rotating rollers and is arranged symmetrically as viewed from the direction of travel of the conveyor. The first rotating roller rotates by driving the rotating motor, and the second rotating roller is driven by the rotation of the first rotating roller transmitted thereto. Therefore, the rotating method of the first rotating roller and the second rotating roller is in the reverse direction. The pouch bag that has entered the tunnel-type cutting unit is sandwiched between a pair of rotating rollers and is cut while moving in the traveling direction of the conveyor. Further, the method of transmitting the drive of the rotary motor to the rotary roller may be a method of transmitting indirectly through a belt or a gear, or a method of driving the rotary roller directly by the rotary motor.

  Further, a rotary blade is provided concentrically on one of the rotary rollers, and a circumferential groove for receiving the rotary blade is provided at a position of the other rotary roller where the rotary blade hits. The rotary blade is disposed on either the first rotary roller or the second rotary roller. The pouch bag can be more stably cut when it is arranged on the first rotating roller that is rotated by driving of the rotating motor.

  The radius of the rotating roller is not particularly limited, but can be a numerical value of about 15 mm to 50 mm. The rotating roller is made of an elastic material at the portion in contact with the pouch bag. In general, a rubber roller in which a rubber core made of metal or other material is coated with rubber or another elastic material can be exemplified. Examples of the elastic substance include nitrile rubber, chloroprene rubber, ethylene / propylene rubber, silicone rubber, butyl rubber, styrene rubber, urethane rubber, hyperon rubber, and fluorine rubber.

  The radius of the rotary blade is larger than the radius of the rotary roller. The depth of the circumferential groove that receives the rotary blade is substantially the same as the value obtained by subtracting the radius of the rotary roller from the radius of the rotary blade. Therefore, although the depth of the circumferential groove depends on the thickness of the elastic material constituting the rubber roller which is the rotating roller, for example, a value of about 1 mm to 10 mm can be given.

  The pouch bag is sent out in the direction of travel by the pair of rotating rollers, cut by a rotary blade, and divided into a pouch bag containing a fragment and the contents at the top of the cut pouch bag.

  In the present invention, the rotary blade may be made of any material such as metal and ceramics, for example, a stainless steel rotary blade, but the content in the pouch bag contains liquid, so that it does not corrode. Those are preferred. Such a rotary blade can also be purchased as a commercial product.

  In this invention, it is preferable that the circumferential speed of the said rotating roller shall be 1.05-1.35 times with respect to the moving speed of the said conveyor. Therefore, the speed of one point on the circumference of the rotating roller driven by the rotary motor of the present invention is 1.05 V when the moving speed of the conveyor is 1 Vm / sec. It is preferable to adjust the speed with a speed adjusting mechanism so as to be in a range of ˜1.35 Vm / sec. If the speed is less than 1.05 V / sec, cutting may not be performed completely. Further, when the speed exceeds 1.35 Vm / sec, an excessive force is applied to the pouch bag, and the cut portion may not be a straight line, or a fine piece may be formed in addition to the cut fragment. Absent.

  In addition, a plurality of pairs of ironing rollers having a shape similar to the rotating roller can be provided on the upstream side of the pair of rotating rollers provided with the rotating blade and the circumferential groove. The plurality of pairs of squeezing rollers are sequentially lengthy from the upstream side toward the downstream side, and the lower ends thereof are gradually lowered toward the downstream side. By providing an ironing roller with such a step, the contents (especially solids) at the upper end (that is, near the sealing part) inside the pouch bag are ironed downward (pressed downward), and further progressed. Then, the pouch bag that has reached the rotary blade 15 can be cut at the portion where the contents have been removed, and as a result, the contents can be prevented from overflowing or scattering from the cut end.

  Next, in the present invention, a discharge unit can be provided in the tunnel-type cutting unit, and the discharge unit includes a discharge nozzle that injects compressed air into the pouch bag, and fragments and removal of the cut pouch bag. And a discharge part for storing the adhered matter. The cut pouch bag pieces naturally fall within the cutting unit, but in order to effectively recover this, a discharge nozzle is provided toward one of the side surfaces of the pouch bag in the housing of the cutting unit, By ejecting compressed air, in addition to fragments of the pouch bag, deposits attached to the pouch bag are discharged from a discharge port or a discharge bag disposed at a position in the housing opposite the compressed air outlet. Drain to the department. By providing such a discharge unit, the cut pieces of the pouch bag and the like are completely isolated from the pouch bag storing the contents, so that no foreign matter is mixed into the contents.

  The compressed air used in the discharge unit is pressurized with an air compressor or the like. Preferably, it is desirable for food hygiene to use compressed air in which impurities and foreign matter are filtered by a compressed air cleaner. Due to the compressed air sprayed from one nozzle on the side of the bag body in the housing of the cutting unit, the cut pieces and the like are discharged out of the cutting unit along a discharge unit comprising a guide and a stage in the cutting unit. .

  In the present invention, a sensor for detecting the arrival of the pouch bag is provided on the downstream side of the tunnel-type cutting unit, and the conveyor is automatically stopped when the arrival of the opened pouch bag is detected by the sensor. You can make it. Thereby, the work efficiency of the collection | recovery operation | work of the contents in the opened pouch bag can be improved.

  Furthermore, in the present invention, the position dimension of the tunnel type cutting unit in the height direction with respect to the conveyor can be adjusted according to the dimension of the pouch bag. Thereby, according to the height of a pouch bag, it becomes possible to match | combine the cutting location of a pouch bag with the position of a rotary blade suitably. For example, the height dimension position of the tunnel type cutting unit with respect to the conveyor is appropriately adjusted by connecting a removable height adjusting joint to the lower end of the tunnel type cutting unit housing. be able to.

  Next, the process of taking out the contents from the pouch bag can be mechanized, but the opened pouch bag is manually overturned, the contents are collected in a prepared container, and after the pouch bag is discharged, the cassette The tray loaded with the section is placed on a conveyor that is transported again to the cleaning unit, the cutting unit, and the discharging unit. If the conveyor is a circular type, it is preferable because a series of work steps can be performed continuously. Subsequent to this step, if a new pouch bag containing an object to be cut, that is, a liquid content optionally containing solid matter, is loaded in the tray and the cassette section, the following operation can be performed. .

  When the opened pouch bag is turned over, a net-like member can be provided that allows the liquid material in the pouch bag that flows out to flow down and captures the pouch bag. Thereby, the work efficiency of the collection | recovery operation | work of a content can be improved.

  Hereinafter, embodiments of an automatic opening device according to the present invention will be described in more detail with reference to the drawings.

  FIG. 1 is an overall view relating to an example of an embodiment of an automatic opening device according to the present invention. In the automatic opening device shown in FIG. 1, a cleaning unit 5, a cutting unit 6, and a discharge / solid-liquid separation table 8 are provided on a conveyor 1.

  In order to automatically open the pouch bag using the automatic opening device according to the present invention, first, the pouch bag (unopened) 4 is sandwiched by the cassette part 2 and the one mounted on the tray 3 is separated into the cleaning unit 5 and the cutting unit. Place it on the conveyor 1 before it reaches the unit 6. Alternatively, the pouch bag (unopened) 4 sandwiched between the cassette units 2 is placed on the tray 3 that moves on the conveyor 1 before reaching the cleaning unit 5 and the cutting unit 6.

  FIG. 2 is a diagram illustrating an example of the cassette unit 2, the tray 3, and the pouch bag (unopened) 4 in an easily understandable manner. The cassette unit 2 is composed of a metal frame and a wire mesh, and the pouch bag (unopened) 4 is loaded into the cassette unit 2, fixed, and upright as shown in FIG. The tray 3 is a resin container, and the cassette unit 2 loaded with a pouch bag (unopened) 4 is mounted on the tray. The outer size of the cassette unit 2 is made slightly smaller than the inner size of the tray 3 so that the cassette unit is securely held in the tray 3 when the cassette unit 2 is mounted on the tray. Such a pouch bag (unopened) 4 is sandwiched between the cassettes 2 and mounted on the tray 3 can move smoothly and reliably on the conveyor.

  As shown in FIG. 1, the tray 4 on which the cassette unit 2 loaded with a pouch bag (unopened) 4 is carried by a conveyor and sent to a cleaning unit 5. FIG. 3 shows an example of the cleaning unit. The cleaning unit 5 includes a shower nozzle 11 and a guide rail 12 in the housing 10. The housing 10 is a tunnel-shaped metal member including left and right side surfaces and a top plate. A pipe 9 is introduced into the housing from the outside of the housing 10 and branched, and a plurality of shower nozzles 11 are provided on the pipe. ing. A guide rail 12 supported by a metal arm extending from the top plate of the housing is provided in the housing 10 of the cleaning unit 5. While the cassette unit 2 holding the pouch bag 4 passes through the cleaning unit 5, cleaning water is sprayed from the shower nozzle 11 to the entire pouch bag 4 and the cassette unit 2 to perform cleaning.

  FIG. 6 illustrates the structure of the guide rail 12 in detail. As shown in FIG. 6, the guide rail 12 is a pair of metal rails from the side (inlet side) where the pouch bag 4 reaches the cleaning unit 5 toward the other side (outlet side) of the cleaning unit. Is provided. The pair of metal rails are arranged in parallel within the housing 10 so as to be positioned at substantially equal intervals. The space | interval should just be a space | interval which can pass the inside of the pouch bag to be cut | disconnected, and can pass the inside of the guide rail 12 smoothly, for example, about 1-5 cm can be mentioned. If this value is too small, the thickness of the pouch bag 4 conveyed by the conveyor 1 and the distance between the metal rails are almost the same, and the upper portion of the pouch bag is prevented from passing smoothly through the guide rail 12. By setting the distance to be slightly larger than the thickness of the pouch bag, the tray 3 on which the cassette unit 2 loaded with the pouch bag 4 is guided in parallel with the traveling direction of the conveyor 1 by the guide rail 12. Therefore, smooth conveyance can be performed, and when the tray 3 reaches the cutting unit 6, it is smoothly captured by the guide rail provided in the cutting unit. On the other hand, if this interval is too large, the pouch bag 4 will freely pass through the guide rail 12 to some extent, and even when it reaches the cutting unit 6, it is smoothly captured by the guide rail 18 provided in the cutting unit. This is not preferable because it may not be performed or may stagnate on the conveyor.

  Further, the end on the inlet side is preferably open outward as shown in FIG. The reason is that when the pouch bag 4 mounted on the tray 3 reaches the inlet side of the cleaning unit 5, the guide rail is opened even if the tip of the pouch bag 4 is slightly displaced from the center line of the conveyor 1. This is because the tip of the pouch bag 4 is guided by the portion to the parallel portion of the guide rail. Although the guide rail on the outlet side of the cleaning unit does not have to be open, as with the inlet, it has an advantage that there is no stagnation when the conveyor moves in the opposite direction if it is opened outward.

  As shown in FIG. 1, the pouch bag 4 cleaned by the cleaning unit 5 is then conveyed to the cutting unit 6. In the cutting unit 6, when the pouch bag 4 reaches the guide rail 12, the pouch bag 4 is guided by the guide rail and slides on the conveyor so as to be positioned near the center of the conveyor, and the upper end portion of the pouch bag (unopened) 4 is rotated by the rotation roller. Can be captured.

  FIG. 4 is a diagram illustrating an example of the cutting unit 6. As shown in FIG. 4-1, the housing 16 is a tunnel-shaped metal member made up of left and right side surfaces and a top plate, and has two shafts extending vertically from the top plate toward the conveyor 1 inside. A pair of rotating rollers 13 are provided adjacent to each other. In the housing 16 of the cutting unit 6, a guide rail 18 supported by a metal arm extending from the top plate of the housing is provided.

  The guide rail 18 of the cutting unit 6 may have a shape in which the inlet end and the outlet end are opened outward, like the guide rail 12 of the cleaning unit 5.

  The internal structure of the cutting unit 6 is also shown in FIG. FIG. 7 shows a state in which the pouch bag 7 cut by the rotary blade attached to the rotary roller 13 is sandwiched between the guide rails 18 and moves from the back surface to the front surface in FIG.

  As shown in FIG. 4, the housing 16 is provided with a speed adjusting mechanism 17, and the speed adjusting mechanism starts, stops, and adjusts the speed of a rotary motor provided in the cutting unit with an attached knob.

In FIG. 4A, details of the rotating roller surrounded by a broken line are shown in FIG. 4B, and a plan view thereof is shown in 4-3.
A pair of adjacent rotating rollers 13 in the cutting unit are arranged symmetrically when viewed from the traveling direction of the conveyor 1. The first rotating roller is rotated by the drive of the rotating motor, and the second rotating roller is transmitted and driven by the rotation of the first rotating roller. Therefore, the rotating method of the first rotating roller and the second rotating roller is as follows: The reverse direction. The pouch bag (unopened) 4 that has entered the cutting unit is cut between the pair of rotating rollers 13 while moving in the traveling direction of the conveyor, and the lower portion of the pouch bag storing the fragments and contents of the upper portion of the pouch bag. It is divided into.

  After the pouch bag is cut by the rotating roller 13 as described above, a discharge unit can be provided in the cutting unit 6 in order to automatically remove and collect fragments on the upper part of the cut pouch bag. FIG. 5 is a view showing a discharge unit provided in the cutting unit 6. The discharge unit illustrated in FIG. 5 includes a nozzle 19 provided on one of the side surfaces of the cutting unit 6, a guide 20 that is a metal plate extending from the other side facing the side surface to the rotating roller, and perpendicular to the guide. A metal stage 21, which is a flat surface in contact, is provided.

  The cut upper portion of the pouch bag and the like is sent along the guide 20 and the stage 21 to the side face facing the side face where the nozzle 19 is provided by the compressed air sprayed from the nozzle 19, and is arranged at the end of the stage 21. It can be collected in a resin discharge bag (not shown). When the fragments in the discharge bag are full, replace with a new discharge bag.

  As shown in FIG. 1, the cassette unit 2 and the tray 3 loaded with the pouch bag (opening) 7 opened in the cutting unit 6 are conveyed to the discharge / solid-liquid separation table 8 by the conveyor 1. The next step is the discharge / solid-liquid separation of the contents in the discharge / solid-liquid separation table 8.

  The discharge / solid-liquid separation stand 8 is a metal net-like stand, and when an operator falls the cassette unit 2 and the tray 3 loaded with the pouch bags (opening) 7 on the stand, the liquid contents are meshed. The pouch bag fragments (and the solid matter in the pouch bag) that have passed through are left on the discharge / solid-liquid separation table 8 and are therefore excluded as foreign matters (the solid matter in the pouch bag is recovered). The contents are collected in a container (not shown) separately prepared under the discharge / solid-liquid separation table 8 and used for the intended use. Empty pouch bags are also collected for disposal. The cassette unit 2 and the tray 3 are again placed on the conveyor 1 and returned to the original place for recovery, or the pouch bag (unopened) is sandwiched again and used continuously in the next step.

  In FIG. 1, the conveyor 1 showed the example of a round shape. The tray 3 loaded with the empty cassette unit 2 is first transported to the place where the pouch bag (unopened) 4 is sandwiched by the cassette unit 2 and placed on the tray 3. Then, again, the pouch bag (unopened) 4 is sandwiched between the cassette sections 2 and a series of steps of washing, cutting, discharging and solid-liquid separation are continuously performed, so that workability is very good and the conveyor 1 If a series of steps of cleaning, cutting and discharging / solid-liquid separation corresponding to this is performed, the processing capacity per hour can be increased.

  As shown in FIG. 1, the conveyor 1 provided with the cleaning unit 5, the cutting unit 6, and the discharge / solid-liquid separation 6 is arranged on a straight line, for example, in a straight line, and is cleaned and cut only in one direction. , A form for performing the discharge / solid-liquid separation process, or a plurality of lines of the same form.

  FIG. 8 is a schematic perspective view showing a second embodiment of the present invention, in which the vicinity of a cutting unit is depicted. The basic configuration of the second embodiment is the same as that of the above-described embodiment, but the cassette unit 2 and the tray 3 are omitted. In the above-described embodiment, the cassette portion and the tray are constituent members for keeping the pouch bag 4 in an appropriate posture (pouch bag sealing portion is upward and parallel to the traveling direction). In the embodiment, as shown in FIG. 8, the cassette unit and the tray are not required by arranging a large number of side rollers 19 on both sides of the conveyor 1.

In the second embodiment, the pouch bag 4 is guided by the pair of guide rails 12 while holding both sides thereof by the side universal rollers 19 and maintaining an appropriate posture.
As described above with reference to FIG. 6, the pair of guide rails 12 are bent so as to expand toward the upstream side, and there is a slight error in the support position of the pouch bag on the conveyor. Also, the sealing part of the pouch bag is smoothly received. As an embodiment different from this, instead of bending the upstream end portion of the guide rail 12, it is also conceivable to set a larger distance between the pair of guide rails.

  In FIG. 8, what is indicated by reference numeral 13 is the rotating roller described above, and when the pouch bag 4 advances, the sealing portion formed at the upper end thereof is cut.

  In FIG. 8, an ironing roller 23 composed of a plurality of pairs of rollers is provided on the upstream side of the rotating roller 13. The ironing roller includes a plurality of pairs of rollers.

FIG. 9 is a schematic side view showing the ironing roller 23.
In the ironing roller 23 of this example, four pairs of rollers having substantially the same diameter as the rotating roller 13 are arranged in parallel with the rotating roller 13. The rotation direction is set so as to be sent in the direction of the arrow with a pouch bag (not shown) interposed therebetween.

The four pairs of rollers are different in length from each other, have the shortest upstream end with respect to the traveling direction of the pouch bag, and are sequentially lengthened toward the downstream side. For this reason, the bottom of the four pairs of rollers has the highest upstream end and is gradually lowered toward the downstream side. Because of such a configuration, when the pouch bag advances in the direction of the arrow, the vicinity of the sealing portion is initially sandwiched between the leftmost roller, and then sandwiched between the two rollers on the left half. The contents at the upper end (that is, near the sealing portion) inside the pouch bag are squeezed downward as being sandwiched between the four and four rollers.
As a result, the pouch bag that has further advanced to reach the rotary blade 15 is cut at a location where the contents have been removed. For this reason, there is no possibility that the contents overflow or scatter from the cut end.

  In the embodiment shown in FIG. 8, the sensor 24 is provided at the end point of the conveyor 1, and when the arrival of the pouch bag is detected, the conveying operation of the conveyor is stopped. In this way, the operation of the cutting unit is automatically adjusted according to the state of the next process.

DESCRIPTION OF SYMBOLS 1 ... Conveyor 2 ... Cassette part 3 ... Tray 4 ... Pouch bag (unopened)
5 ... Cleaning unit 6 ... Cutting unit 7 ... Pouch bag (opened)
8 ... Discharge / solid-liquid separation stand 9 ... Pipe 10 ... Cleaning unit housing 11 ... Shower nozzle 12, 18 ... Guide rail 13 ... Rotating roller 14 ... Circumferential groove 15 ... Rotating blade 16 ... Cutting unit housing 17 ... Speed adjustment Mechanism 19 ... Nozzle 20 ... Guide 21 ... Stage 22 ... Swivel roller 23 ... Squeeze roller 24 ... Sensor

Claims (11)

Sandwiching a resin-made bag containing liquid contents optionally containing solids, holding the cassette in an upright position, a tray on which the cassette is placed, a conveyor for transporting the tray, A tunnel-type cutting unit disposed along the conveying path of the conveyor,
The tunnel-type cutting unit includes a housing, a pair of adjacent rotating rollers, a rotating motor that drives one of the rotating rollers, a speed adjusting mechanism that controls a rotating speed of the rotating motor, and the bag in the housing. A pair of guide rails for guiding the body to the rotating roller,
Two axes of the pair of rotating rollers are arranged in a direction perpendicular to the conveyor surface, and a straight line connecting the center points of the two axes is arranged to be orthogonal to the traveling direction of the conveyor Because
One of the pair of rotating rollers is provided with a concentric rotating blade near the center in the longitudinal direction, and the other rotating roller is provided with a circumferential groove corresponding to the rotating blade,
When the bag body sandwiched between the cassette portions placed on the tray is conveyed by the conveyor and reaches the guide rail, the housing moves in parallel with the traveling direction of the conveyor, and the pair of rotations A rotating blade guided to a roller and concentrically provided on one of the pair of rotating rollers fits into a circumferential groove provided on the other rotating roller and rotates to cut the bag body. An automatic bag opening device, characterized in that the bag body is opened. A conveyor for transporting a resin bag containing a liquid content optionally containing solid matter, and a tunnel-type cutting unit disposed along the transport path of the conveyor,
The tunnel-type cutting unit includes a housing, a pair of adjacent rotating rollers, a rotating motor that drives one of the rotating rollers, a speed adjusting mechanism that controls a rotating speed of the rotating motor, and the bag in the housing. A pair of guide rails for guiding the body to the rotating roller,
Side free rollers facing both sides via the conveyor are provided, and the sealed portion of the bag body to be conveyed is guided so as to be parallel to the traveling direction of the conveyor,
Two axes of the pair of rotating rollers are arranged in a direction perpendicular to the conveyor surface, and a straight line connecting the center points of the two axes is arranged to be orthogonal to the traveling direction of the conveyor Because
One of the pair of rotating rollers is provided with a concentric rotating blade near the center in the longitudinal direction, and the other rotating roller is provided with a circumferential groove corresponding to the rotating blade,
When the bag body is conveyed by the conveyor while being guided by the side roller, and reaches the guide rail, it moves in the housing in parallel with the traveling direction of the conveyor, and is guided to the pair of rotating rollers, A rotating blade provided concentrically on one of the pair of rotating rollers is fitted into a circumferential groove provided on the other rotating roller and rotates to cut and open the bag. An automatic opening device for bags.   The automatic opening device according to claim 1 or 2, wherein a peripheral speed of the rotating roller is 1.05 to 1.35 times the moving speed of the conveyor.   The pair of guide rails are arranged in the housing in parallel with the traveling direction of the conveyor, and are bent so that the guide rails are opened outward on the side where the transported bag body enters. The automatic opening device according to any one of claims 1 to 3. A cleaning unit is provided upstream of the tunnel-type cutting unit,
The cleaning unit includes a cleaning nozzle that sprays cleaning water onto the bag body;
The automatic opening device of any one of Claims 1-4 provided with the guide rail which guides the movement of the said bag body. A discharge unit is provided in the tunnel-type cutting unit,
The discharge unit includes a discharge nozzle that injects compressed air;
The automatic opening device of any one of Claims 1-5 provided with the discharge part which accommodates the fragment | piece of the cut said bag. A plurality of pairs of ironing rollers are provided on the upstream side of the rotating roller,
The plurality of pairs of squeezing rollers are lengthwise sequentially from the upstream side toward the downstream side, and lower ends thereof are sequentially lowered toward the downstream side, according to any one of claims 1 to 6. Automatic opening device.   A sensor for detecting the arrival of the bag body is provided on the downstream side of the tunnel-type cutting unit, and the conveyor is automatically stopped when the arrival of the opened bag body is detected by the sensor. The automatic opening device according to any one of 1 to 7.   The automatic opening device according to any one of claims 1 to 8, wherein a position dimension of the tunnel type cutting unit in a height direction with respect to the conveyor is adjustable according to a dimension of the bag body.   The net member according to any one of claims 1 to 9, further comprising a net-like member that causes the liquid material in the bag body to flow out when the opened bag body is turned over and captures the bag body. Automatic opening device. A step of conveying the bag body in a substantially horizontal direction by a conveyor with a resin-made bag body containing the sealed liquid content optionally containing solid matter;
Cutting and opening the bag body to be transported by a pair of rotating rollers,
One of the pair of rotating rollers is provided with a concentric rotating blade in the vicinity of the central portion in the longitudinal direction, and the other rotating roller is provided with a circumferential groove corresponding to the rotating blade. And automatically opening the bag.

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