US20160107774A1 - Packing method and packaging device for implementing packing method - Google Patents

Packing method and packaging device for implementing packing method Download PDF

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Publication number
US20160107774A1
US20160107774A1 US14/894,048 US201414894048A US2016107774A1 US 20160107774 A1 US20160107774 A1 US 20160107774A1 US 201414894048 A US201414894048 A US 201414894048A US 2016107774 A1 US2016107774 A1 US 2016107774A1
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United States
Prior art keywords
chute
goods
cylinder
bag
gate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/894,048
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English (en)
Inventor
Masashi Kondo
Makoto Ichikawa
Satoshi NISHITSUJI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ishida Co Ltd
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Ishida Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2013123442A external-priority patent/JP2014240287A/ja
Application filed by Ishida Co Ltd filed Critical Ishida Co Ltd
Assigned to ISHIDA CO., LTD. reassignment ISHIDA CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ICHIKAWA, MAKOTO, KONDO, MASASHI, NISHITSUJI, SATOSHI
Publication of US20160107774A1 publication Critical patent/US20160107774A1/en
Abandoned legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/044Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles being combined with a filling device
    • B65B31/045Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles being combined with a filling device of Vertical Form-Fill-Seal [VFFS] machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/001Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/001Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves
    • B65B39/004Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves moving linearly
    • B65B39/005Nozzles, funnels or guides for introducing articles or materials into containers or wrappers with flow cut-off means, e.g. valves moving linearly transverse to flow direction
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B39/00Nozzles, funnels or guides for introducing articles or materials into containers or wrappers
    • B65B39/12Nozzles, funnels or guides for introducing articles or materials into containers or wrappers movable towards or away from container or wrapper during filling or depositing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/22Forming shoulders; Tube formers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B2210/00Specific aspects of the packaging machine
    • B65B2210/10Means for removing bridges formed by the material or article, e.g. anti-clogging devices

Definitions

  • the present invention relates to a packing method for packing snack food such as potato chips with low bulk density (this is referred to below as goods) being collected in a chute with a funnel shape into a bag with a tube shape and a packaging device for implementing this method.
  • Bag manufacturing and packaging devices which pack goods from above into a bag which is formed in a tube shape using a former and form a sealed bag by laterally sealing an upper sealing portion (top portion) of the bag and a lower sealing portion (base portion) of a continuous bag which is continuous with the upper sealing portion of the bag at the same time and vertically separating the border of the sealing portions, is widely used in various food product fields.
  • these clogging prevention devices have a problem that the commercial value of the goods is reduced because the goods are hit by a poker or a rotating plate coming into the funnel-shaped chute and thereby broken into small pieces.
  • broken pieces of goods drop in the bag with a delay, there is also a problem that sealing defects are caused by these broken pieces of goods being captured in the sealing portions of the bag.
  • the problem of the present invention is to propose a new packing method where high speed operation is possible without above mentioned problems occurring and a packaging device for implementing this method.
  • a packing method is a packing method where goods which are dropped from above are accommodated in a chute with a funnel shape and then packed into a bag with a tube shape and includes collecting the goods inside the chute, lowering the chute while accelerating in a state where a discharge opening of the chute is open, and reversing direction of movement of the chute thereby raising the chute which is lowered, wherein the goods collected in the chute are discharged into the bag while being accelerated.
  • the goods which are dropped from above with a time lag are received and compactly accommodated in the chute with the funnel shape.
  • the chute is provided with a funnel section at an upper part and a cylindrical section at a lower part which is continuous with the funnel section, and the funnel section at the upper part has a function of guiding the goods which fall on every side from above to the inside of the cylindrical section at the lower part.
  • the cylindrical section at the lower part has a function to compactly accommodate the goods which fall from the funnel section.
  • a lower end discharge opening in the cylindrical section may be cut diagonally in order for the goods to be accommodated with an erect posture as much as possible and the cut surface is opened and closed using a gate.
  • the lower end discharge opening may be cut with a V shape and the cut surface is open and closed using a pair of gates which come into contact with and separate from each other. Due to this, a diagonal surface is formed in the lower end discharge opening which is closed using the gate and the goods with a sliced shape are filled along the diagonal surface.
  • the chute When the goods are accommodated in the chute, the chute is lowered while accelerating and the gate is opened at the same time. Then, when the chute reaches the bottom dead point, the direction of movement of chute is immediately reversed and thereby the chute is raised. Consequently, the goods inside the chute is accelerated downwards due to the lowering action of the chute, and by the sudden reversing direction of movement of the chute and raising of the chute following this the falling goods go through the chute and drop due to the inertia of the goods. Due to this, the goods which are compactly collected in the chute are vigorously discharged into the bag with a tube shape as one batch. For this reason, clogging inside the chute can be prevented. Further, it is also possible to increase the packing density in the bag and suppress the goods being captured in sealing portions because the goods inside the chute are discharged as one batch.
  • the chute In a case where the chute is provided with the funnel section at the upper part and the cylindrical section at the lower part which is continuous with the function section at the upper part, the goods tend to incline so that the longitudinal directions of the goods extend in vertical direction in a process where the goods slide down the funnel section and led to the inside of the cylindrical section even if there is a mixture with the goods with a relatively large size. For this reason, even if the funnel section is clogged, the goods which are large in size and the surrounding goods drop through the inside of the chute due to the downward inertia which is applied by the lowering chute and the following sudden reversing direction of movement of the chute and raising of the chute.
  • a packaging device for implementing this packing method is a packaging device which bends packaging material with a sheet shape with a former into a cylindrical shape, then winds it around a cylinder extending in vertical direction and thereby forms it into a tube shape and forms a bag with a tube shape by laterally sealing a lower end section of the packaging material with a tube shape using a pair of lateral sealing means.
  • the packaging device is a packaging device which packs goods from the cylinder into the bag formed in a tube shape using the former, laterally seals an upper sealing portion of the bag in which the goods is packed and a lower sealing portion of a continuous bag which is continuous with the upper sealing portion at the same time using the lateral sealing means, and forms a sealed bag which is packed with the goods by separating the border of the sealing portions.
  • the packaging device is provided with a chute with a funnel shape, a gate, a raising and lowering mechanism, and a control section.
  • the chute collects the goods which are dropped from above.
  • the gate is positioned at an upper end of the cylinder and opens and closes a lower end discharge opening in the chute.
  • the raising and lowering mechanism raises and lowers the chute in the vertical direction.
  • the control section controls the opening and closing of the gate and the raising and lowering of the raising and lowering mechanism.
  • the control section inserts the chute in which the goods are accommodated into the cylinder while accelerating the chute downward in a state where the gate is open, and then immediately reverses the direction of movement of the chute and raises the chute.
  • the present invention it is possible to eliminate clogging of goods in the chute since the goods which drops in pieces from above are gathered in the chute and then vigorously discharged into the bag with the tube shape.
  • the goods it is possible for the goods to be compactly packed in the bag without being broken since the goods in the chute are discharged as one batch of goods. Accordingly, the goods are prevented from being captured in the sealing portions of the bag.
  • FIG. 1 is a schematic configuration diagram of the main sections of a packing device in a packaging device according to one embodiment of the present invention.
  • FIG. 2 is a schematic configuration diagram of the main sections of a packaging device according to one embodiment of the present invention.
  • FIG. 3( a ) is a schematic front view of the packaging device for explaining a collecting step of goods in the packaging device in FIG. 2 .
  • FIG. 3( b ) is a schematic side view of the packaging device for explaining a collecting step of goods in the packaging device in FIG. 2 .
  • FIG. 4( a ) is a schematic front view of the packaging device for explaining a discharging step of goods in the packaging device in FIG. 2 .
  • FIG. 4( b ) is a schematic side view of the packaging device for explaining a discharging step of goods in the packaging device in FIG. 2 .
  • FIG. 5 is a perspective diagram of the outer appearance of the front side of one embodiment of the packing device in the packaging device according the present invention.
  • FIG. 6 is a perspective diagram of the outer appearance of the rear side of one embodiment of the packing device in the packaging device according the present invention and is particularly a perspective diagram of a state where a chute is positioned at the top dead position.
  • FIG. 7 is a perspective diagram of the outer appearance of the rear side of one embodiment of the packing device in the packaging device according the present invention and is particularly a perspective diagram of a state where a chute is positioned at the bottom dead position.
  • FIG. 8 is a perspective diagram of the outer appearance of a weighing and packaging integral device which includes a packaging device according to one embodiment of the present invention.
  • FIG. 9 is a perspective diagram of the outer appearance of a former and a cylinder as one embodiment.
  • FIG. 10 is a perspective diagram of the outer appearance of a cylinder on which a packing device as one embodiment is mounted.
  • FIG. 11 is a partial cross sectional diagram of a cylinder as one embodiment.
  • FIG. 12 is a configurational block diagram of a gas supplying means as one embodiment which is mounted in a cylinder.
  • FIG. 13 is a configurational block diagram of a weighing and packaging integral device as one embodiment.
  • FIG. 14 is an operation timing chart of the weighing and packaging integral device in FIG. 13 .
  • FIG. 1 shows a schematic configuration diagram of the main sections of a packing device 100 which is provided in the packaging device B according to one embodiment of the present invention.
  • FIG. 2 shows a schematic configuration diagram of the main sections of the packaging device B which is mounted with the packing device 100 .
  • a packaging material F with a sheet shape is bent into a cylindrical shape using a former 3 , then wound around a cylinder 7 and thereby formed in a tube shape, and a lower end section of the packaging material F is laterally sealed using a pair of lateral sealing means 6 , which come into contact with and separate from each other, to form a top portion (an upper sealing portion) of a bag TB with a tube shape and a base portion (a lower sealing portion) of a continuous bag.
  • the cylinder 7 penetrates through a central portion of the former 3 in vertical direction and is inserted into an upper end section of the bag TB with a tube shape.
  • Goods M which are dropped through a metal detector MD which is arranged above a chute 103 are discharged into the cylinder 7 via the chute 103 with a funnel shape.
  • the bag TB with a tube shape which is wound around the cylinder 7 is lowered continuously or intermittently by a pair of pull-down belts 4 , 4 which are arranged on both sides of the bag TB.
  • joints T 1 which are shaped by the both side edge portions of the packaging material F formed in a tube shape by being wound around the cylinder 7 , are vertically sealed using a vertical sealing means 5 .
  • the chute 103 with the funnel shape is formed with a funnel section 131 at an upper part and a cylindrical section 132 at a lower part, and a lower end of the funnel section 131 and an upper end of the cylindrical section 132 are connected vertically via opening sections with an elliptical shape which are cut diagonally to each other.
  • the outer diameter of the cylindrical section 132 is formed to be smaller than the inner diameter of the cylinder 7 .
  • the cylindrical section 132 is lowered by predetermined strokes in the cylinder 7 while accelerating and then is returned to an initial position by immediately reversing direction of its movement so as to be raised once it reaches a bottom dead point, using a raising and lowering mechanism 300 which will be described later.
  • a lower end discharge opening in the cylindrical section 132 is cut in a V shape and a gate 104 opens and closes the cut surface from both sides.
  • the gate 104 includes opening and closing gates 141 , 141 which open and close an upper end section of the cylinder 7 and diagonal gates 142 a , 142 a , each of which extends diagonally backward from an abutting section of each of the opening and closing gates 141 , 141 .
  • Each of the diagonal gates 142 a , 142 a is configured so that a lower end section of the cylindrical section 132 which is cut in a V shape is opened and closed from both sides.
  • the gates 141 and 142 a are configured so as to come into contact and separate in the direction of the arrows using opening and closing mechanisms 144 which will be described later, and an upper end opening section 706 in the cylinder 7 and the lower end discharge opening in the cylindrical section 132 are opened and closed at the same time by the opening and closing action of the opening and closing mechanisms 144 .
  • the opening and closing gates 141 , 141 which open and close the upper end opening section in the cylinder 7 are necessary when filling an inert gas in the cylinder 7 and may be omitted when the gas is not filled.
  • a lower end section of the cylindrical section 132 may be cut diagonally instead of being cut with a V shape and only one of the diagonal gates may be used as the diagonal gate 142 a.
  • FIGS. 3( a ), 3( b ), 4( a ) and 4( b ) show schematics of the operations of the packaging device B.
  • FIGS. 3( a ), 4( a ) show front views
  • FIG. 3( b ), 4( b ) show side views.
  • the goods M which are dropped are led to vertical postures while slide down in the chute 103 and filled in the cylindrical section 132 . This is assisted by diagonal elliptical shapes of the connection portions of the funnel section 131 and the cylindrical section 132 and the diagonal closure of the lower end discharge opening in the cylindrical section 132 with the gate 104 .
  • connection portion of the funnel section 131 and the cylindrical section 132 is a diagonal elliptical shape
  • the goods M slide down the connection portion while being tilted in a direction where there is less contact resistance and thereby being led to a vertical orientation.
  • the gate 104 in a state of being closed has a V shape in front view and the goods M which drop with a vertical orientation are filled into the trough in the V shape.
  • the gate 104 is opened and, at the same time, the chute 103 in which the goods M are accommodated is lowered while accelerating (refer to FIGS. 4( a ) and 4( b ) ). Then, when the chute 103 reaches the bottom dead point, the chute 103 is returned to its initial position by having its direction of movement immediately reversed and raised while accelerating.
  • FIG. 8 shows a perspective diagram of the outer appearance of a weighing and packaging integral device 200 which includes the packaging device B which is one embodiment of the packaging device according to the present invention.
  • the weighing and packaging integral device 200 has a configuration where the packaging device B is arranged at a lower part and a weighing machine W is arranged at an upper part and is provided with a touch panel 2 , by which it is possible to integrally operate the packaging device B and the weighing machine W, at the front.
  • the weighing machine W is configured using a combination weighing machine with a well-known configuration.
  • the goods M are snack food such as potato chips and are supplied to a central upper section of the weighing machine W.
  • the goods M which are supplied to the central upper section are dispersed on a plurality of radial pathways and are then supplied to corresponding weighing hoppers WH in a lower part via a plurality of pool hoppers PH which are arranged at the terminal ends of the respective pathways.
  • the weights of the goods M which are being weighed using the respective weighing hoppers WH are combined and the weighing hoppers WH which make an optimal combination forming a certain quantity of the goods M are selected.
  • the selected weighing hoppers WH discharge the goods M into a collection chute C based on a discharge request signal from the packaging device B.
  • the discharged goods M go through the inside of the metal detector MD (refer to FIG. 2 ) while stretching out lengthwise in a longitudinally arrayed state when it slides down the collection chute C.
  • the discharged goods M are then supplied to the packaging device B via the chute 103 of the packing device 100 .
  • the packaging device B performs bag packaging by accommodating the goods M in a bag b with a tube shape and then laterally sealing the top portion of the bag b and the base portion of the continuous bag at the same time (refer to FIG. 2 ).
  • the packaging device B which performs such operations is configured from a packaging unit BU which produces bagged products from bags with a tube shape, a packaging material supplying unit FU which supplies the packaging material F to the packaging unit BU, and a control section 10 (refer to FIG. 13 ) which controls the movements of driving sections of each of the packaging unit BU and the packaging material supplying unit FU.
  • the packaging material supplying unit FU supplies the packaging material F with a sheet shape to the former 3 in the packaging unit BU and is provided to be adjacent to a rear section of the packaging unit BU.
  • the packaging unit BU will be explained in reference to the schematic diagram of the packaging device B in FIG. 2 .
  • the packaging unit BU is provided with the former 3 , the pull-down belts 4 , the vertical sealing means 5 , and a lateral sealing means 6 .
  • the former 3 forms the packaging material F with a sheet shape into a tube shape.
  • the pull-down belts 4 convey the packaging material F, which is formed in a tube shape, downward.
  • the vertical sealing means 5 vertically seals the joint T 1 which is a portion where both ends of the packaging material TB with a tube shape overlap at the front side.
  • the lateral sealing means 6 heat seals the top portion of the bag b and the base portion of the continuous bag at the same time by laterally sealing the bag b which is formed at a lower end section of the packaging material TB with a tube shape.
  • the packaging unit BU has the cylinder 7 which guides the goods M to the inside of the bag b and around the outer circumference of which the packaging material F with a tube shape is wound.
  • both of the packaging material F which is formed in a tube shape and the bag b which is formed at the lower end section of the packaging material F may be referred to the bag TB with a tube shape in the following description.
  • the packaging unit BU also has the packing device 100 (refer to FIG. 2 ).
  • the packing device 100 accommodates the goods M, which are dropped from the weighing machine W at the upper side through the inside of the metal detector MD, in the chute 103 with a funnel section and discharges the goods M into the bag TB with a tube shape via the cylinder 7 .
  • the packaging unit BU also has a gas supplying means 9 (refer to FIG. 13 ).
  • the gas supplying means 9 fills inert gas into the cylinder 7 .
  • the packing device 100 the former 3 , the cylinder 7 , the pull-down belts 4 , the vertical sealing means 5 , the lateral sealing means 6 , and the gas supplying means 9 of the packaging unit BU will be described below in detail.
  • the packing device 100 in the packaging device B will be described.
  • the packing device 100 accommodates the goods M which are dropped from above in the chute 103 with a funnel shape and discharges the goods M into the bag TB with a tube shape.
  • FIG. 5 shows a perspective diagram of the outer appearance of the front side of the packing device 100 which is one embodiment of the packing device in the packaging device B according the present invention.
  • FIG. 6 and FIG. 7 show perspective diagrams of the outer appearance of the rear side of the packing device 100 .
  • the packing device 100 is provided with the chute 103 , the gate 104 which opens and closes the lower end discharge opening in the chute 103 , and the raising and lowering mechanism 300 which raises and lowers the chute 103 .
  • FIG. 5 and FIG. 6 show a state where the chute 103 is positioned at the top dead point.
  • FIG. 5 shows a state where the gate 104 is closed and
  • FIG. 6 shows a state where the gate 104 is open.
  • FIG. 7 shows a state where the gate 104 is open and the chute 103 is lowered to the lower dead point.
  • the chute 103 is provided with the funnel section 131 at the upper part and the cylindrical section 132 at the lower part.
  • the lower end discharge opening in the cylindrical section 132 at the lower part is cut with a V shape and the gate 104 is configured to open and close the cut surface from both sides.
  • a bracket 133 is attached to the outer side of the rear surface of the cylindrical section 132 .
  • the bracket 133 is attached to a raising and lowering arm 301 of the raising and lowering mechanism 300 and is configured so that the entirety of the chute 103 is raised and lowered in the vertical direction.
  • the chute 103 is made of resin.
  • the material for the chute 103 is not limited to resin and the chute 103 may be made of metal. However, the following effects are obtained by making the chute 103 with resin.
  • the metal detector MD for detecting metal being mixed in with the goods M is arranged above the packing device 100 , in other words, above the chute 103 as shown in FIG. 2 . It is desirable for the metal detector MD that a metal-free zone of approximately 50 to 100 mm is provided above and below the metal detector MD in order to prevent erroneous detecting.
  • the chute 103 is made of metal, it would be necessary to keep a distance between the metal detector MD and the chute 103 in order to provide the metal-free zone and this tends to lower performance such as an increase in the dropping distance of the goods M.
  • the material for the chute 103 is resin, it is not necessary to keep a distance between the metal detector MD and the chute 103 and it is possible to reduce the dropping distance of the goods M and to easily prevent the erroneous detection by the metal detector MD.
  • the chute 103 is formed using transparent resin, it is possible to easily adjust the drop timing of the goods M since the dropping of the goods M is visible.
  • the chute 103 is formed using a transparent resin, even if a bridge of the goods M (a state where the goods M are stuck in the chute 103 ) is created in the chute 103 , it is possible to easily discover the bridge.
  • the gate 104 has the opening and closing gates 141 , 141 which open and close the upper end opening section 706 of the cylinder 7 (refer to FIG. 9 ) and the diagonal gates 142 a , 142 a which extend diagonally backward from abutting sections of the respective opening and closing gates 141 , 141 .
  • the diagonal gates 142 a , 142 a are resin members with a triangular prism shape and are fixed to the opening and closing gates 141 , 141 (refer to FIG. 5 ).
  • the diagonal gates 142 a , 142 a are not limited to resin members with a triangular prism shape.
  • the diagonal gates 142 a , 142 a may be, for example, metal plates which respectively extend diagonally backward from abutting sections of the opening and closing gates 141 , 141 .
  • the diagonal gates 142 a , 142 a open and close the lower end discharge opening in the cylindrical section 132 , which is cut in a V shape, from both sides.
  • the opening and closing gates 141 , 141 are guided to the troughs of a pair of guide rails 143 , 143 which extend in the horizontal direction and are configured so as to come into contact with and separate from each other along with the respective diagonal gates 142 a , 142 a by the opening and closing mechanisms 144 , 144 . Due to this, the lower end discharge opening in the cylindrical section 132 and the upper end opening section 706 of the cylinder 7 are opened and closed at the same time.
  • slots 145 , 145 which extend in a direction which is orthogonal to the movement direction of the opening and closing gates 141 , 141 , are formed.
  • Sliders 146 , 146 which slide along the slots 145 , 145 , are inserted in the slots 145 , 145 (refer to FIG. 5 ).
  • the opening and closing mechanisms 144 , 144 are configured by the sliders 146 , 146 , rotation arms 147 , 147 at a tip end section of which the sliders 146 , 146 are attached, and servo motors 148 a , 148 a which rotate the sliders 146 , 146 over a range of 180 degrees by rotating the rotation arms 147 , 147 by 180 degrees.
  • Servo motors are used here in driving of the opening and closing mechanisms 144 , 144 , but vane type actuators which rotate at high speed using air pressure may be used alternatively.
  • the pair of guide rails 143 , 143 which extend in the horizontal direction are fixed to a base frame 101 and support legs 102 to 102 are fixed to the four corners of the base frame 101 .
  • coil springs 21 to 21 and toroidal shaped pressing plates 22 to 22 cover support shafts between the respective support legs 102 to 102 and the base frame 101 .
  • half-screw bolts, which are covered by the coil springs 21 and the toroidal shaped pressing plates 22 in the same manner, are fixed with an upward orientation from a lower side at two locations on the front side of the base frame 101 .
  • Plates 23 , 23 are detachably inserted between the toroidal shaped pressing plates 22 to 22 and the support legs 102 and between the toroidal shaped pressing plates 22 , 22 and the head sections of the half-screw bolts. For this reason, notches into which fit the support shafts of the support legs 102 and the shaft of the half-screw bolts are provided in the plates 23 , 23 .
  • the servo motors 148 a , 148 a are attached to the plates 23 , 23 .
  • the plates 23 are inclined with regard to the base frame 101 while the coil springs 21 , 21 being compressed, it is possible for the sliders 146 to be released from the slots 145 due to the servo motors 148 a being inclined and it is possible for the opening and closing gates 141 to be pulled out from the guide rails 143 when the sliders 146 are released. Due to this, disassembling and cleaning of the gates 104 are possible.
  • the packing device 100 is connected with the cylinder 7 via a coupling tool which is not shown in the drawings. When the connection of the packing device 100 with the cylinder 7 is released and the base frame 101 is lifted up, the entirety of the packing device 100 can be separated from the cylinder 7 .
  • the lengths of four support legs 102 to 102 which are attached to the base frame 101 are set so that the chute 103 is not in contact with the floor even at its lowest position and the servo motors 148 a , 148 a are suspended above the floor even if the packing device 100 detached from the cylinder 7 is placed directly on the floor.
  • the raising and lowering mechanism 300 is a mechanism which moves the raising and lowering arm 301 vertically (refer to FIG. 5 ) using a servo motor which is not shown in the drawings.
  • An upper section of the raising and lowering mechanism 300 is supported by a body frame (which is not shown in the drawings) of the packaging device B.
  • the raising and lowering arm 301 is connected with the chute 103 via a bracket 133 .
  • the raising and lowering mechanism 300 raises the raising and lowering arm 301 by driving the servo motor and raises the chute 103 to the top dead point.
  • the raising and lowering mechanism 300 lowers the raising and lowering arm 301 by driving the servo motor and lowers the chute 103 to the bottom dead point.
  • the chute 103 is driven by the raising and lowering mechanism 300 so that the tip end of the chute 103 (the tip end of the cylindrical section 132 ) reaches to below a diagonal section 701 inside the cylinder 7 where the inner diameter of the cylinder 7 becomes narrower.
  • the diagonal section 701 will be described later.
  • the raising and lowering mechanism 300 moves the raising and lowering arm 301 up and down by converting the rotational action of the servo motor as a drive source into a linear action using a rack and pinion mechanism or a crank mechanism
  • the raising and lowering mechanism 300 is not limited to this.
  • an air cylinder may be used as the drive source for the raising and lowering mechanism 300 which moves the raising and lowering arm 301 up and down.
  • a linear motor which carries out linear actions may be used as the drive source for the raising and lowering mechanism 300 which moves the raising and lowering arm 301 up and down.
  • FIG. 9 shows a perspective diagram of the outer appearance of the former 3 and the cylinder 7 .
  • FIG. 10 shows a perspective diagram of the outer appearance of the cylinder 7 in a state where the packing device 100 is mounted on an upper end section of the cylinder 7 .
  • the former 3 is provided with a sailor section 30 where the packaging material F with a sheet shape is bent in a tube shape and a collar section 31 which is formed around the cylinder 7 . Then, the former 3 and the cylinder 7 which penetrates through the collar section 31 vertically are attached to a base member 32 .
  • the base member 32 is detachably attached to the base frame (which is not shown in the drawing) of the packaging device B and sliders 33 , 33 , which are fixed to and supported by being inserted into rails (which is not shown in the drawings) of the base frame, are formed on both sides of the base member 32 .
  • grips 34 , 34 with a circular column shape are attached to both sides on the front side of the base member 32 .
  • a lateral bar 35 which bridges between the grips 34 in the horizontal direction (refer to FIG. 10 ), is attached to the grips 34 .
  • a rod 36 is attached to a central section of the lateral bar 35 in the front and back direction and the cylinder 7 is supported by the grips 34 , 34 via the rod 36 and the lateral bar 35 .
  • horizontal brackets 37 , 37 with a V shape are fixed to an upper section of the cylinder 7 and end sections of the horizontal brackets 37 , 37 are respectively attached to upper end sections of the grips 34 , 34 .
  • the cylinder 7 is supported by the grips 34 , 34 via the horizontal brackets 37 , 37 , the lateral bar 35 , and the rod 36 .
  • the collar section 31 of the sailor section 30 is formed in a cylindrical shape so as to surround the outer circumference of the cylinder 7 and the collar section 31 is overlapped at the front with a slight gap like the collar on a kimono.
  • the collar section 31 of the sailor section 30 is formed in a cylindrical shape so as to surround the outer circumference of the cylinder 7 and one of the end sections of the collar section 31 is arranged in front of the other end section of the collar section 31 with a slight gap at the front.
  • the packaging material F When the packaging material F is set, the packaging material F is bent so as to follow the surface of the sailor section 30 , is further bent in a tube shape at the collar section 31 , and is wrapped around the outer circumference of the cylinder 7 via a slit between the inner side of the collar section 31 and the outer side of the cylinder 7 .
  • FIG. 11 shows a partial cross sectional diagram of the cylinder 7 .
  • the diagonal section 701 with a funnel shape is formed on an upper section of the cylinder 7 and a flange 702 is attached to an upper end edge of the diagonal section 701 .
  • Vertical through holes are provided at two opposing locations on the flange 702 (at the front and rear of the cylinder 7 ) and one-touch couplings 703 , through which inert gas is injected, are attached at the through holes.
  • a cap 704 in a hollow toroidal shape with an open bottom surface covers the flange 702 so as to interpose packing therebetween and an inert gas pathway 705 is formed by the cap 704 and the flange 702 .
  • the upper end opening section 706 with a funnel shape is formed in a central section of the cap 704 with the toroidal shape, and a downwardly diagonal slit with a ring shape, which is formed between the inner wall of the upper end opening section 706 and the diagonal section 701 , becomes a gas outlet 707 for inert gas.
  • the inner diameter of the lower end section of the upper end opening section 706 is designed substantially the same with the inner diameter of the cylinder 7 and the upper end opening section 706 does not come into contact with the cylindrical section 132 of the chute 103 which is raised and lowered.
  • the cap 704 with the toroidal shape is detachable to the flange 702 .
  • an L-shaped hook 708 which is shown in FIG. 9 is attached on the outer wall of the cylinder 7 and it is possible to move up and down the L-shaped hook 708 by unfolding a foldable butterfly knob 709 and turning it.
  • the flange of the cap 704 and the flange 702 of the cylinder 7 are sandwiched from above and below and thereby locked when the L-shaped hook 708 is lowered by turning the butterfly knob 709 in a state where the cap 704 covers the flange 702 .
  • the base frame 101 of the packing device 100 is mounted on the upper surface of the cap 704 and the cap 704 and the base frame 101 are connected together using a connector tool which is not shown in the drawings.
  • the opening and closing gates 141 , 141 open and close the upper end opening section 706 which is described above. Then, inert gas is injected so as to blow batch of the goods M discharged from the chute 103 downward and to be supplied in the bag TB with a tube shape while the chute 103 is being moved up and down.
  • a socket 710 through which inert gas is injected into the cylinder 7 is attached to the front side of an upper section of the cylinder 7 and a one-touch coupling which is not shown in the drawings is attached to the socket 710 .
  • a duct 711 which guides inert gas injected from the socket 710 to a lower end section of the cylinder 7 , is formed on an inner wall of the cylinder 7 which continues to the socket 710 . Then, at a driving preparation stage, oxygen inside the bag TB with a tube shape is replaced with inert gas by vigorously injecting inert gas into the bag TB with a tube shape from a lower end discharge opening 712 of the duct 711 .
  • a spreader 713 which widens the bag TB with a tube shape from an inner side, is provided at a lower end section of the cylinder 7 .
  • the pull-down belts 4 , 4 which are arranged on both sides of the cylinder 7 are configured by suction chambers 41 , 41 and belts 42 , 42 with holes which run around the suction chambers 41 , 41 while facing inwardly with each other.
  • the bag TB with a tube shape is transported downward while being suctioned and held by the belts 42 , 42 (refer to FIG. 2 ).
  • the pull-down belts 4 , 4 are connected with a movement mechanism (which is not shown in the drawings) which makes the pull-down belts 4 , 4 come into contact and separate with regard to the cylinder 7 .
  • the vertical sealing means 5 heat seals the joint T 1 of the packaging material F which is formed in a tube shape while pushing the joint T 1 against the cylinder 7 with a certain pressure.
  • the vertical sealing means 5 is configured by a heater block 51 and a metal belt 52 which runs around the heater block 51 at the same time with the packaging material F (refer to FIG. 2 ).
  • the vertical sealing means 5 is connected with a movement mechanism (which is not shown in the drawings) which makes the vertical sealing means 5 come into contact and separate with regard to the cylinder 7 along with the pull-down belts 4 , 4 .
  • the lateral sealing means 6 is configured by a pair of sealing jaws 61 , 61 in which a heater it built and a driving mechanism (which is not shown in the drawings) which makes the pair of sealing jaws 61 , 61 come into contact with and separate from each other with regard to the TB in a tube shape.
  • Clam shutters 62 , 62 which sandwich the bag TB with a tube shape from the front and back is attached to an upper section of the sealing jaws 61 , 61 so as to be able to progress and retreat in the horizontal direction.
  • the clam shutters 62 , 62 prevent small dropping fragments from being captured in the lateral sealing portion of the bag b by closing them prior to the sealing jaws 61 , 61 .
  • the driving mechanism for the lateral sealing means 6 it is possible to use a mechanism which is disclosed in, for example, Japanese Unexamined Patent Application Publication No. 10-53206 by which the pair of sealing jaws 61 , 61 are rotated while facing inwardly with each other so that each of the pair of sealing jaws 61 , 61 traces out an action trajectory with a D shape (a so-called D motion).
  • the driving mechanism for the lateral sealing means 6 it is possible to use a mechanism which causes each of the sealing jaws 61 , 61 to perform a so-called box motion.
  • Each of the sealing jaws 61 , 61 laterally seals a top portion of a bottom end section of the bag b and a base portion of the continuous bag TB at the same time by sandwiching and pressing the bag TB with a tube shape each other.
  • a cutter which is not shown in the drawings is built in one of the sealing jaws 61 .
  • the bag b which locates at a lower end section and the continuous bag TB are vertically separated by using the cutter.
  • FIG. 12 is a configurational block diagram of the gas supplying means 9 .
  • the gas supplying means 9 is configured by a gas cylinder 91 which holds inert gas such as nitrogen gas or argon gas in a pressurized state, a pressure adjusting valve 92 which depressurizes inert gas supplied from the gas cylinder 91 and sends it to three pathways, a first solenoid valve 93 and a first flow amount adjusting valve 94 which are connected with a first pathway of the three pathways, a second solenoid valve 95 and a second flow amount adjusting valve 96 which are connected with a second pathway of the three pathways, and a third solenoid valve 97 and a third flow amount adjusting valve 98 which are connected with a third pathway of the three pathways.
  • the outlet sides of the first flow amount adjusting valve 94 and the second flow amount adjusting valve 96 are merged and connected to the one-touch couplings 703 which locates at an upper section of the cylinder 7 . Accordingly, inert gas with a first flow amount is supplied from the first flow amount adjusting valve 94 when the first solenoid valve 93 is opened, and inert gas with a second flow amount is supplied from the second flow amount adjusting valve 96 when the second solenoid valve 95 is opened, to the inert gas pathway 705 which locates at the upper section of the cylinder 7 and ejected downward through the gas outlet 707 with a ring shape into the cylinder 7 .
  • the outlet side of the third flow amount adjusting valve 98 is connected with a one-touch coupling (which is not shown in the drawings) which is attached to the socket 710 on the outer wall of the cylinder 7 . Accordingly, inert gas with a third flow amount is ejected from the third flow amount adjusting valve 98 downward through the lower end discharge opening 712 in the duct 711 into the bag TB with a tube shape when the third solenoid valve 97 is opened.
  • the third flow amount is set to a large flow amount which can instantly replace inside the bag with a tube shape with inert gas in order to replace inside the bag TB with a tube shape with the inert gas in a short period of time. After the inert gas replacement, the gas flow amount is reduced and the gas replacement rate inside the bag TB with a tube shape is maintained so as not to be reduced until the goods M are discharged.
  • the flow amount of inert gas which is supplied to the inside of the cylinder 7 differs depending on the bulk density and the content amount of the goods M, the size of the bag, the operation speed, and the like.
  • the bulk density of potato chips the density of the goods M in a container in a case when gaps between the goods M are eliminated as much as possible by applying vibration
  • the content amount is one ounce (28.35 grams)
  • the bag size is a width of 133 mm and a height of 184 mm
  • the operation speed is 150 bags per minute
  • the first flow amount is set at 220 liters per minute
  • the second flow amount is set at 300 liters per minute. But these are only one example and these flow amounts may be modified if the conditions differ.
  • control section 10 which controls the packaging device B will be described below in detail.
  • FIG. 13 shows a configurational block diagram of a control system for the weighing and packaging integral device 200 .
  • the control section 10 controls the weighing machine W and the packaging device B individually or integrally.
  • the control section 10 is configured by a computer.
  • the control section 10 controls each driving section in the packaging unit BU and the packaging material supplying unit FU in accordance with parameters and driving conditions which are set using the touch panel 2 which is shown in FIG. 13 .
  • the control section 10 controls a feeder FD, the pool hoppers PH, the weighing hoppers WH, and the like in the weighing machine W.
  • the control section 10 takes in necessary information from various types of sensors which are mounted in the weighing machine W and the packaging device B and performs various types of control based on this information.
  • the control section 10 controls each of the pull-down belt 4 , the vertical sealing means 5 , the lateral sealing means 6 , the gas supplying means 9 , and the packing device 100 , and controlling of each of these is related to each other.
  • the opening and closing of the weighing hoppers WH, an operation of packing by the packing device 100 , and gas supply by the gas supplying means 9 will be focused on and described.
  • the chute 103 in the packing device 100 is positioned at the top dead point and the opening and closing gates 141 , 141 are closed in an initial state.
  • the packaging material F is formed in a tube shape by being set in the former 3 .
  • the goods M are supplied to a central upper section of the weighing machine W.
  • the control section 10 firstly forms the bag TB with a tube shape by operating the pull-down belts 4 , the vertical sealing means 5 , and the lateral sealing means 6 .
  • the control section 10 opens the third solenoid valve 97 for a set period of time in a state where the gate 104 is open.
  • inert gas replacement inside the bag TB with a tube shape is performed by vigorously ejecting inert gas with the third flow amount from the lower end discharge opening 712 of the duct 711 into the bag TB with a tube shape.
  • the control section 10 closes the gate 104 , throttles the third flow amount adjusting valve 98 to flow a small amount of inert gas and thereby sets the packaging device B in standby state.
  • FIG. 14 represents the operation timing of each of the weighing hoppers WH, the gate 104 , the chute 103 , and the gas supplying means 9 after discharging of the goods.
  • the weighing machine W discharges the goods M
  • the weighing machine W sends a discharge completion signal to the control section 10 .
  • a timer is started from the point in time when the discharge completion signal is received and the period of time for the rearmost goods M to reach the chute 103 is measured since the head of the goods M which is discharged reaches the chute 103 after a predetermined time, for example after 0.8 seconds.
  • the control section 10 Since the rearmost goods M reaches the chute 103 when time is up, the control section 10 performs opening of the gate 104 , lowering of the chute 103 , and opening of the first solenoid valve 93 at the same time and thereby chute 103 in which the goods M are accommodated is lowered while being accelerated and inert gas with the first flow amount is supplied to the inside of the cylinder 7 from the gas outlet 707 at an upper section of the cylinder 7 .
  • the goods M discharged from the weighing hoppers WH are put in the vertical column state during being dropped and sequentially reaches the inside of the chute 103 and accumulates inside the cylindrical section 132 .
  • the chute 103 is lowered at the same time as the closed gate 104 is opened.
  • inert gas is ejected to the inside of the cylinder 7 by ejecting inert gas with the first flow amount while the chute 103 is being lowered.
  • the gate 104 is opened earlier than the chute 103 is lowered.
  • the control section 10 immediately reverses direction of movement of the chute and raises the chute 103 .
  • the goods M which are compactly brought together in the chute 103 are instantly discharged into the bag TB with a tube shape from the chute 103 due to the chute 103 being lowered and then having its direction of movement reversed so as to be raised.
  • the control section 10 closes off the gate 104 and stops supplying inert gas by closing the first solenoid valve 93 at the same time.
  • the control section 10 ejects inert gas with the second flow amount downward from the same gas outlet 707 by opening the second solenoid valve 95 which is closed and supplying inert gas with the second flow amount into the inert gas pathway 705 .
  • the chute 103 can be set in a state of readiness to receive the goods M which are to be dropped next.
  • one batch of the goods M which are discharged to the inside of the cylinder 7 is accommodated inside the bag b which locates at a lower end section by being dropped into the bag TB with a tube shape while receiving a downward gas flow from behind.
  • the bag TB with a tube shape is gradually extended while being transported along the cylinder 7 and the capacity of the bag TB with a tube shape increases in company with the extending of the bag TB, and the inert gas with the second flow amount is filled.
  • the first flow amount and the second flow amount in a case of continuous transporting are set to values which sufficiently compensate for increases in the capacity of the bag TB.
  • the second flow amount is set to a flow amount which is slightly more than the first flow amount in order for the goods M to go downwards against the rising of inert gas.
  • the clam shutters 62 , 62 close off an upper end section of the bag b and lateral sealing is started, thereby the bag TB with a tube shape is newly formed above the bag b which locates at a lower end section. Since the capacity of this new bag TB increases in company with extending of the bag TB, the air pressure inside the new bag TB is reduced when supplying of inert gas with the second flow amount is stopped.
  • the control section 10 repeats the processes described above by performing opening of the gate 104 which is closed up until this point, lowering of the chute 103 , and opening of the first solenoid valve 93 at the point in time when the rearmost goods M reach the chute 103 . Due to this, the air pressure inside the new bag TB which is reduced due to extending of the bag TB is returned to the original air pressure.
  • a new group of the goods M also drops into the bag TB with a tube shape due to being pressed by a downward gas flow since inert gas which is held in the chute 103 above the gate 104 is instantly pulled inside the cylinder 7 when the closed gate 104 is opened.
  • inert gas used compared to a case where inert gas is continuously supplied since inert gas is intermittently supplied so as to correspond to volumetric variation in the bag TB with a tube shape.
  • inert gas is supplied downward from an upper end section of the cylinder 7 to the inside of the bag and gas flow inside the tube always flows downward even when the internal volume of the bag TB with a tube shape changes due to the approach of the lateral sealing means 6 .
  • the weighing and packaging integral device is described in this embodiment, but instead of this, it is possible for the invention to be applied to a previous type where the weighing machine and the packaging device are operated while being linked with each other.
  • the bag with a tube shape is laterally sealed while being continuously transported in this embodiment, but instead of this, the bag with a tube shape may be laterally sealed while being intermittently transported.
  • raising and lowering of the chute 103 and opening and closing of the gate 104 are independent but the movements may be linked to each other by coupling them using a link.
  • first solenoid valve 93 and the second solenoid valve 95 are alternately opened and closed in conjunction with opening and closing of the gate in this embodiment, but instead of this, inert gas may be supplied to the inside of the cylinder from both flow pathways by opening the first solenoid valve 93 while opening the second solenoid valve 95 . In this case, adjustment is required so that the total of the amounts through the first flow amount adjusting valve 94 and the second flow amount adjusting valve 96 are adjusted to the original second flow amount by throttling the second flow amount adjusting valve 96 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
US14/894,048 2013-06-12 2014-05-27 Packing method and packaging device for implementing packing method Abandoned US20160107774A1 (en)

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JP2013123442A JP2014240287A (ja) 2013-06-12 2013-06-12 包装方法及び包装装置
JP2013-123442 2013-06-12
JP2013-243499 2013-11-26
JP2013243499 2013-11-26
PCT/JP2014/064028 WO2014199821A1 (ja) 2013-06-12 2014-05-27 充填方法及び充填方法を実施する包装装置

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US10858128B2 (en) * 2016-08-15 2020-12-08 TNA Australia Pty Limtied Packaging assembly
US20210394941A1 (en) * 2018-11-26 2021-12-23 Tetra Laval Holdings & Finance S.A. A method and a packaging apparatus for forming sealed partially-filled packages

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CN106081202A (zh) * 2016-06-07 2016-11-09 苏州杰悦五金机械有限公司 一种食品厂专用自动化包装机
US10960994B2 (en) * 2017-02-17 2021-03-30 Frito-Lay North America, Inc. Apparatus and methods of packaging particulates for settling
CN107226239A (zh) * 2017-07-27 2017-10-03 宁波工程学院 物料输送包装一体机
CN107215491A (zh) * 2017-07-27 2017-09-29 宁波工程学院 输送包装一体机
CN107600537A (zh) * 2017-09-16 2018-01-19 应志伟 一种立式包装机
CN107618703B (zh) * 2017-09-16 2021-12-28 汕头市如伴机电科技有限公司 立式包装机
CN108454924B (zh) * 2018-02-28 2020-03-24 重庆勋勋商贸有限责任公司 一种食品包装设备
CN115285391A (zh) * 2022-08-01 2022-11-04 江苏仅一联合智造有限公司 一种具有升降旋转功能实现快速拆装的螺杆充填机构
CN115783441B (zh) * 2023-01-29 2023-05-30 山东万达环保科技有限公司 一种镁钙粉水化包装控制系统及其实现方法

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AU2014279317A1 (en) 2015-12-24
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EP3009360A1 (en) 2016-04-20
CN105189295B (zh) 2017-03-08
AU2014279317B2 (en) 2017-12-21
EP3009360A4 (en) 2017-03-22

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