US20110207589A1 - Pouch Machine With Sealer - Google Patents
Pouch Machine With Sealer Download PDFInfo
- Publication number
- US20110207589A1 US20110207589A1 US12/711,894 US71189410A US2011207589A1 US 20110207589 A1 US20110207589 A1 US 20110207589A1 US 71189410 A US71189410 A US 71189410A US 2011207589 A1 US2011207589 A1 US 2011207589A1
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- US
- United States
- Prior art keywords
- sealing
- sealer
- linear actuator
- fixture
- pouch
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/10—Applying or generating heat or pressure or combinations thereof
- B65B51/14—Applying or generating heat or pressure or combinations thereof by reciprocating or oscillating members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/431—Joining the articles to themselves
- B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
- B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
- B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
- B29C66/81469—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint one placed next to the other in a single line transverse to the feed direction, e.g. shoulder to shoulder sonotrodes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
- B29C66/822—Transmission mechanisms
- B29C66/8221—Scissor or lever mechanisms, i.e. involving a pivot point
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/851—Bag or container making machines
- B29C66/8511—Bag making machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7128—Bags, sacks, sachets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2155/00—Flexible containers made from webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2160/00—Shape of flexible containers
- B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/60—Uniting opposed surfaces or edges; Taping
- B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/60—Uniting opposed surfaces or edges; Taping
- B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
- B31B70/642—Uniting opposed surfaces or edges; Taping by applying heat or pressure using sealing jaws or sealing dies
Definitions
- the present invention relates generally to the art of bag making. More specifically, it relates to pouch machines, and methods of making pouches.
- Laminate film includes a film made up of two or more layers, such as an upper layer that is sealed in various locations to a lower layer. The layers can be comprised of different materials.
- the prior art provides for intermittently advancing the laminate film.
- a sealing platen, cross sealer, or longitudinal sealer is lowered into contact with the film.
- the platen typically includes a sealing pattern for making more than one pouch.
- the platen is raised after the seal is formed, and the film is advanced.
- a downstream cutting section cuts the film into individual pouches.
- Platen includes sealing surfaces that form seals in both the machine and cross directions, form multiple seals in the cross direction at different machine direction locations, or form multiple seals in the machine direction at different cross direction locations.
- Cross sealer as used herein, is a sealer that makes a seal that extends a greater distance in the cross direction than the machine direction.
- Longitudinal sealer as used herein, is a sealer that makes a seal that extends a greater distance in the machine direction than the cross direction.
- Platens, cross and longitudinal sealers can have multiple sealing surfaces.
- Multiple sealing surfaces includes sealing die surfaces that form more than one seal, either in the same or different directions.
- Linkage includes mechanical connection between two items that provides for the transmittal of force or movement from the first item to the second item, and can include pivot points, etc.
- the linkages are complex, and sometimes included an eccentric cam that either rocked back and forth, or fully rotated, to cause the platen to move up and down.
- the linkages in such systems are subject to wear and maintenance, as well as causing looseness in the system which could result in improper sealing. Also, such systems require a load cell to measure the force applied by the platen, and required loss motion to control the force.
- this prior art patent uses force as its main control parameter, it requires an add-on force transducer and cannot rely on already available servo motor feedback, which adds cost and complexity. Also, it teaches the use of a single servo motor, which can result in an unbalanced platen (i.e., more force on one side than the other). Moreover, it is primarily concerned with applying sufficient force and does not recognize that the force should be controlled to prevent fracturing of the laminate film. Rather, it teaches to control excess force merely with a safety relay to prevent damage to the machine.
- Linear actuator is a device that converts some kind of power, such as hydraulic or electric power, into linear motion.
- the actuators drive the platen up and down, using guides mounted beneath the actuator, toward the midline in the cross direction, away from the edge of the machine.
- a clevis mount is used.
- Two actuators are used because of the force needed to drive the platen down, into a rubber backing, to make the seal. This design avoids the linkages of the prior art using under mounted servo motors, However, it requires two actuators (which can be expensive) to obtain the desired force, and requires space above the machine for the actuator (which moves vertically) to be mounted, and cannot be mounted beneath the machine.
- Prior art pouch machine sealers typically included a sealing die that has the sealing surface thereon.
- the sealing die is often attached to a die backing member.
- the sealing die can be affixed to the die backing member, such as with cap screws.
- it is sometimes desirable to change the sealing die due to wear or to provide a different sealing profile. In such cases the entire sealer could be changed, but that can be costly and time consuming. Unscrewing the sealing die from the die backing member requires a tool and is time consuming.
- Some prior art machines have quick change sealing dies, that include a spring loaded L clip. Such clips are expensive.
- a pouch machine that moves a platen, cross sealer, or longitudinal sealer that avoids complex linkages, applies force evenly, and is not excessively expensive is desirable. Also, a sealing die that can be easily removed and replaced, without expensive clips, is also desirable.
- a pouch machine includes an infeed section, a sealing section, and an outfeed section.
- the infeed section provides a pouch or laminate to the sealing section, and the outfeed section receives the sealed pouch from the infeed section.
- the sealing section includes at least one sealer that has a sealing fixture disposed to move vertically toward and away from a sealing position.
- a linear actuator is mounted to provide a controlled horizontal motion.
- a linkage is connected between the linear actuator and the sealing fixture. The linkage translates the controlled horizontal motion into the vertical motion of the sealing fixture. The linkage translates a first horizontal distance into a lesser vertical distance.
- a pouch machine includes an infeed section, a sealing section, and an outfeed section.
- the infeed section provides a pouch or laminate to the sealing section, and the outfeed section receives the sealed pouch from the infeed section.
- the sealing section includes at least one sealer that has a sealing fixture disposed to move in a first direction toward and away from a sealing position.
- a linear actuator is mounted to provide a controlled motion in a second direction, that is not the first direction.
- a linkage is connected between the linear actuator and the sealing fixture. The linkage translates the controlled motion in the first direction over a first distance into the motion of the sealing fixture over a second direction, wherein when the second distance is less than the first distance.
- a pouch machine includes an infeed section, a sealing section, and an outfeed section.
- the infeed section provides a pouch or laminate to the sealing section, and the outfeed section receives the sealed pouch from the infeed section.
- the sealing section includes at least one sealer that has a sealing fixture disposed to move in a first direction toward and away from a sealing position.
- a linear actuator is mounted to provide a controlled motion in a second direction, that is not the first direction.
- a linkage is connected between the linear actuator and the sealing fixture. The linkage translates the controlled motion in the first direction having a first force into the motion of the sealing fixture having a second force wherein when the second force is greater than the first force.
- a sealing fixture for use in a pouch machine includes a die backing member and a sealing die.
- the die backing member has at least one clip mounted on it.
- the clip includes a hook end, and has a first relaxed position and a second tension position.
- the sealing die includes at least one receiver that receives the hook end. When the clip is in the tension position, the sealing die is held against the die backing member.
- the sealer is a longitudinal sealer, a cross sealer, or a platen.
- the sealer includes a pair of rail bearings, which are disposed to guide the vertical motion of the sealing fixture in other alternatives.
- the linear actuator is a screw drive in another alternative.
- the sealing section includes a second sealer and/or additional sealing fixtures in other alternatives.
- the number of sealing fixtures may be equal to the number of linear actuators.
- the linear actuator receives a feedback signal indicative of at least one output parameter of the linear actuator, such a torque, distance, force, and velocity in various alternatives.
- the clip is a lever actuated latch, and the hook end is the end of a curved latching spring, and/or the die backing member includes a source of heat in various alternatives.
- FIG. 1 is a diagram of a pouch machine in accordance with the preferred embodiment
- FIG. 2 is a perspective view of a sealing section in accordance with the preferred embodiment
- FIG. 3 is a perspective view of a sealer in accordance with the preferred embodiment
- FIG. 4A is a diagram of a sealer showing the sealing die in a retracted position in accordance with the preferred embodiment
- FIG. 4B is a diagram of a sealer showing the sealing die in a middle position in accordance with the preferred embodiment
- FIG. 4C is a diagram of a sealer showing the sealing die in a sealing position in accordance with the preferred embodiment
- FIG. 5A is a diagram of an alternative linkage in accordance with the preferred embodiment.
- FIG. 5B is a diagram of an alternative linkage in accordance with the preferred embodiment.
- FIG. 6 is a perspective of a sealing die clipped to a die backing member in accordance with the preferred embodiment
- FIG. 7 is an end view of a sealing die clipped to a die backing member in accordance with the preferred embodiment.
- FIG. 8 is a clip in accordance with the preferred embodiment.
- a pouch machine 100 in accordance with the present invention includes an infeed section 102 , a sealing section 104 and an outfeed section 106 .
- Infeed section is a portion of the machine that receives material to be made into pouches, or partially made pouches, and transports them to a sealing section.
- Sealing section is the section of a pouch machine where one or more seals are imparted to form or partially form a pouch.
- Outfeed section is a portion of the machine that receives from a sealing section material that has been at least partially made into pouches, and transports them from the sealing section.
- Infeed section 102 receives a laminate (or partially formed pouches, tube material, or a mono layer material in other embodiments), and provides the laminate, unsealed pouches, or partially formed pouches, to sealing section 104 .
- Sealing section 104 includes a platen sealer 108 , longitudinal sealers 109 and operates to impart one or more seals, in the preferred embodiment, to the laminate, thereby forming, or partially forming, the sealed pouches. After the pouches are made they are received by outfeed section 106 for stacking, etc.
- Sealed pouch includes pouches that have all or some of the seals that form the pouch completed.
- Sealer is a portion of a sealing section that has one or more sealing surfaces on a sealing die held against or affixed to a die backing member, as well as linkages etc that cause the sealing surfaces to move toward and away from a sealing position, and a source of heat.
- Unsealed pouch includes a pouch, or material to be made into a pouch, that has at least one seal not yet formed, and can include pouches with one or more seals formed, or no seals formed.
- Pouch machine 100 operates consistently with the prior art, and in particular consistent with the PDI® 600SS pouch machine (shaped seal), and made by CMD® Corp., except for the actuator, linkages, sealing die, and related components as set forth herein.
- sealing section 104 includes one or more sealing fixtures that are brought downward into contact with the laminate or pouch, and impart a seal to the pouch.
- the preferred embodiment provides that the sealing fixtures move vertically, and are driven by a single horizontally mounted linear actuator.
- a linkage between the linear actuator and the sealing fixture is such that the vertical distance the fixture travels is less than the horizontal distance the actuator head travels, when the sealing fixture is in or near the sealing position.
- the force in the vertical direction is greater than the force in the horizontal direction, and a smaller less expensive actuator may be used.
- sealing section 104 provides other functions, such as cooling, perforating, cutting, punching, etc. These functions may be performed solely, or in combination with other functions.
- the sealing fixture can be top mounted (brought downward to make the seal), bottom mounted (moved upward to make the seal), or with two fixtures, one top mounted and the other bottom mounted (the two fixtures move together—one up and one down) to make the seal.
- Other embodiments provide for the movements to be other than horizontal and vertical.
- sealing section 104 includes a frame 202 , a plurality of feet 203 , a carriage 204 , a pair of adjustment hand cranks 205 and 206 , a plurality of rails 208 and bearings 210 that together form rails bearings, a linear actuator 212 , and a pair of sealers, each having a longitudinal sealing fixture 214 , that cooperate to form seals on a pouch.
- the pouch leaves sealing section 104 to outfeed section 106 , in the direction of arrow 215 .
- Frame 202 mounted is mounted on feet 203 .
- a carriage 204 is affixed to frame 202 .
- Carriage 204 can move with respect to frame in alternative embodiments.
- Hand cranks 205 and 206 can be used to adjust the position of the seals.
- Sealing fixtures 214 each include linear actuator 212 (one shown), preferably a roller screw actuator such as an Exlar® GSX40 actuator. As will be described in greater detail below, linear actuator 212 provides horizontal movement. That horizontal movement is translated into vertical movement of a sealing head, guided by rail bearings, including rails 208 and bearings 210 (two of four are show). Rail bearings 208 / 210 are provided for each end of each sealing fixture, and are mounted at the cross direction edge. This provides for better support, particularly when a cross sealer or platen sealer is used. Guiding the motion of the sealing fixture, as used herein, includes directing the motion in a desired direction.
- Sealer 300 can be mounted to be either a cross sealer or a longitudinal sealer, and is shown at a slight angle. In operation sealer 300 is preferably mounted so that the sealing surface is horizontal, but it can be orientated at any angle.
- Sealer 300 includes a pair of fixed brackets 304 , each with rail bearing 208 / 210 , linear actuator 212 , sealing fixture 214 , which includes a sealing die 313 and a die backing member 315 , a top bracket 302 , a U-shaped bracket 307 , and a linkage including a pair of bars 310 , each connected at each end by a pair of pivoting bolts (or pins) 309 and 311 .
- Sealing die 313 is mounted to die backing member 315 . It can be affixed thereto, or mounted using a quick change system, as described below.
- Die backing member 315 includes bearings 210 at each end that are slidably connected to rail 208 , which is in fixed bracket 304 .
- sealing fixture 214 can move vertically, but is fixed and prevented from moving horizontally. As shown in FIG. 3 , sealing fixture 214 is in an extended position where it makes contact with the laminate to from the seals (down, in the preferred embodiment).
- Fixed brackets 304 are mounted to carriage 204 , at the edges of carriage 204 in the machine direction. This provides good support and stability, which helps with precisely placing the seals in a desired location.
- Die backing member is the portion of a sealing fixture to which the sealing die is affixed, and can include a heat source, mounting brackets, pivotable connections, etc.
- Sealing fixture includes the sealing surfaces, which are part of a sealing die, which is fixed to or held against a die backing member, which can include a source of heat.
- Sealing die includes the surfaces used to form seals, and the base on which those surfaces reside.
- the linkage is connected to sealing fixture 214 by pivoting bolts 311 .
- Pivoting bolts 311 are also connected to the lower end of bars 310 .
- the upper end of bars 310 are connected by pivoting bolts 309 to U-bracket 307 .
- Linear actuator 212 is mounted at an end 212 B to bracket 317 , which is fixed. Thus, end 212 B of linear actuator 212 is fixed. An end 212 A of linear actuator 212 moves and is connected to U-bracket 307 by bolt 318 .
- Horizontal motion is motion that is horizontal or substantially horizontal, such as motion that overall results in ten times more horizontal distance than vertical distance traveled.
- Vertical motion as used herein, is motion that is horizontal or substantially horizontal, such as motion that overall results in ten times more vertical distance than horizontal distance traveled.
- FIGS. 4A-4C show sealing fixture 214 in the uppermost position used during shut down ( FIG. 4A ), mid-position used as retracted while running ( FIG. 4B ), and lowered position ( FIG. 4C ).
- Various positions of end 212 A of linear actuator 212 is shown as well, with the right most position shown in FIG. 4A , mid position in FIG. 4B , and left most position in FIG. 4C .
- the position shown in FIG. 4A is a retracted condition during a stopped or shut down condition.
- the unit can also be mechanically locked into place in this position to safely maintain or change dies.
- the position show in FIG. 4B is the retracted position during run.
- the cycle rate of the machine is often limited by the distance the sealing dies need to travel between the sealing positions and the retracted position.
- the preferred embodiment provides that during a stop condition the sealing die is farther from the web than when retracted while running. This limits the distance traveled when retracting, allowing for greater cycle rates (machine speed).
- the precise controlled of the preferred embodiment results in being able to provide a retracted, maintenance position with enough retracted clearance to not heat affect the web ( FIG. 4A ), a shorter retracted position during run to maximize cycle rates of the mechanism ( FIG. 4B ), and a sealing position that allows precise control of the sealing properties ( FIG. 4C ).
- a complete cycle of motion involves starting in the position shown in, FIG. 4A , with sealing fixture 214 in the upper position. End 212 A of linear actuator 212 moves left, resulting in sealing fixture 214 moving downward, past the position in FIG. 4B , until the position of FIG. 4C is reached. The seal is formed, and then end 212 A of linear actuator 212 moves right, drawing sealing fixture 214 upward, past the position in FIG. 4B , until the position of FIG. 4A is reached.
- the motion and force of linear actuator 212 can be precisely controlled, thus the motion and force of sealing fixture 214 , and sealing die 313 , can be precisely controlled.
- the motion of end 212 A of linear actuator 212 and the motion of sealing fixture 214 is controlled motion, and the force applied by linear actuator 212 and the force applied by sealing fixture 214 to make the seal is precisely controlled.
- the force and motion can be constant, or follow a controlled profile, where greater velocity is used to move sealing die 313 into position, and greater force is exerted with less motion as the seal is formed.
- Controlled motion is motion that has a controlled velocity, distance or force.
- Controlled force as used herein, is force that has a controlled magnitude or controlled profile.
- Controlled profile, as used herein is a parameter that has magnitude that is constant or varies, such as over time, distance, angle, etc. along a pre-determined curve.
- the linkage of FIG. 4 provides the additional benefit of multiplying force (and reducing distance) at the position where the seal is formed, while multiplying distance (and multiplying velocity) at the position where sealing die 313 is retracted.
- force multiplied by distance is the same for actuator 212 and sealing die 313 (given conservation of energy).
- the geometry of the linkage provides that the vertical distance sealing die 313 moves divided by the horizontal distance the actuator end 212 A moves is the tangent of the angle 317 of FIGS. 3 and 4 A- 4 C.
- the geometry of the linkage provides that for a given change in H, the change in V is greater than the given change in H for a less than 45 degrees, and the change in V is less than the given change in H for a greater than 45 degrees.
- This “distance multiplier” is greatest when ⁇ is smallest, and sealing die 313 is farthest from the sealing position. This means that sealing fixture 214 moves fastest when it is farthest from the laminate, and then slows as it approaches the laminate. This is helpful to more precisely control the motion as sealing die 313 approaches the sealing position.
- Velocity directly relates to distance, since the time it takes end 212 A to travel ⁇ H is the same as the time it takes sealing die 313 to move ⁇ V.
- Sealing position is the location where the sealing surface makes contact with the pouch (or material being formed into a pouch) to impart heat to form a seal on the pouch.
- the geometry of the linkage provides another advantage. Energy must be conserved at either end of the linkage, so force*distance (distance is ⁇ V or ⁇ H) is the same for actuator end 212 A movement and for sealing die 313 . Since ⁇ V is less than ⁇ H when sealing die 313 is in the sealing position, the force of actuator 212 is multiplied when the seal is being made. Thus, the force needed to push into the rubber backing, and the force needed to make the seal, can be obtained using a smaller and less costly actuator.
- the linkage thus multiplies the distance (and velocity) of sealing die 313 when it is retracted (as shown in FIG. 4A ), and multiplies the force, while dividing the distance and velocity of sealing die 313 when it is in the sealing position (as shown in FIGS. 3 and 4C ).
- Other linkages and other geometries can provide multiplication, although the specific calculation may change.
- a first force is greater than a second force, as used herein, when the magnitude (without regard to the direction) of the first force is greater than the magnitude of the second force.
- a first distance is less than a second distance, as used herein, when the magnitude (without regard to the direction) of the first distance is greater than the magnitude of the second distance.
- the force multiplication can be particularly useful when compressing a rubber backing, as is often need when properly forming a seal. As the rubber compresses, even greater force is required to further compress the rubber.
- the force multiplication of the linkage allows that force to be obtained using a single actuator.
- Actuator 212 preferably includes a built in feedback system, and thus can provide a desired torque, distance, velocity, etc.
- the feedback can be any output parameter of the linear actuator.
- Output parameter of the linear actuator includes physical parameters, such as position, distance, time, force, torque, power, work, etc. Torque applied to the linear actuator by the motor can be used to determine force at the sealing surface. Distance parameter from the motor can be used to determine distance of the linear actuator, and the sealing die.
- the linear actuator feedback system can be used as feedback of the sealing surface, and external load sensors are not required (but can be used).
- Sealing fixtures mounted to seal from the bottom, or pairs that seal from both top and bottom.
- the pair arrangement has another sealing fixture mounted under the laminate, that is controlled to move into the sealing position in coordination with the sealing fixture above the laminate. Both sealing fixtures can be consistent with the description above or below, or one or both can be as in the prior art.
- FIGS. 5A and 5B Two alternative linkages and geometries are shown in FIGS. 5A and 5B .
- the alternatives include fixed brackets 304 , sealing fixture 214 , and actuator 212 , with moving end 212 A. Other alternatives are also possible.
- sealing die 313 is held against die backing member 315 .
- Held against includes holding in a desired position, so as to allow use in the desired operation. They may be screwed or bolted together, or held together with known quick change systems. However, the preferred embodiment uses a novel quick change system.
- FIG. 6 a plurality of clips are shown holding sealing die 313 against die backing member 315 .
- FIG. 7 is an end view and a single clip is visible, and holding sealing die 313 against die backing member 315 .
- a single clip 800 is shown in FIG. 8 .
- Clip as used herein, is an easily removable device that holds two pieces in a desired position, such as a device to hold a sealing die against a die backing member.
- Each of the clips 800 includes a mounting member 602 , which is fixedly mounted, such as bolted or screwed, to die backing member 315 .
- Fixedly mounted, as used herein, means attached so as to be not removable with the use of tools etc.
- the clips include a curved latching spring 601 , having a hook end 803 .
- a lever actuated latch 805 is used to engage the clip between a latching (also called tension or holding position) and a relaxed position. By pressing on the lever 805 the clip is engaged, or disengaged.
- This style clip is relatively inexpensive, and is commercially available from Southco, as part number 97-50-150-12.
- Lever actuated latch is a latch or clip that has a lever used to alternate between a holding position and a relaxed position.
- Curved latching spring is a part of a latch or clip that, when under tension, exerts force to hold two items in a desired position.
- Sealing die 313 includes a plurality of recesses (also called receivers) disposed to receive hook end 803 , one for each clip. Hook end 803 is inserted into recess 605 , and the latch engaged. Thus, positive contact is made and sealing die 313 is held against die backing member 315 . Disposed to receive the hook end, as used herein, means positioned and shaped so as to allow the hook end to be securely inserted thereinto, when the spring is under tension.
- Receiver includes a device or recess that receives a hook end of a latch, and can be part of or affixed to structure.
- Die backing member includes a wedge shaped protrusion 705 that mates with wedge shaped recess 703 on sealing die 313 , in the preferred embodiment. This provides further positive contact. Protrusion 705 helps locate and helps the clips secure sealing die 313 to die backing member 315 . Alternatives provide for a different shape protrusion that can locate and/or secure sealing die 313 , or omit protrusion 705 altogether. Clips may be provide for two or more sides of sealing die 313 /die backing member 315 .
- Alternatives include reversing the clip and receiver (i.e., affix the clip on sealing die 313 and the receiver is in die backing member 315 .
- Other alternatives provide for other clips, other numbers of clips, and other locations of the clips.
- More alternatives include an L-shaped clip that sits on the surface without a special receiver or that sits in a receiver, a notch clip with a protrusion on either the clip or the structure that mates with a receiver on the other of the clip and structure.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Package Closures (AREA)
- Making Paper Articles (AREA)
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/711,894 US20110207589A1 (en) | 2010-02-24 | 2010-02-24 | Pouch Machine With Sealer |
PCT/US2011/025565 WO2011106265A1 (en) | 2010-02-24 | 2011-02-19 | Pouch machine with sealer |
EP15157051.2A EP2907761B1 (en) | 2010-02-24 | 2011-02-19 | Pouch machine with sealer |
CN201610122646.6A CN105751486A (zh) | 2010-02-24 | 2011-02-19 | 带有密封件的制袋机 |
CN201180011091.3A CN102883958B (zh) | 2010-02-24 | 2011-02-19 | 带有密封件的制袋机 |
AU2011218822A AU2011218822B9 (en) | 2010-02-24 | 2011-02-19 | Pouch machine with sealer |
EP11747904.8A EP2539231A4 (en) | 2010-02-24 | 2011-02-19 | DRESSER WITH SEALED CLOSURE DEVICE |
MX2012009445A MX2012009445A (es) | 2010-02-24 | 2011-02-19 | Maquina de bolsa con sellador. |
BR112012021387A BR112012021387A2 (pt) | 2010-02-24 | 2011-02-19 | maquina de bolsa com seladora |
ES15157051.2T ES2617286T3 (es) | 2010-02-24 | 2011-02-19 | Máquina de bolsas con sellador |
DK15157051.2T DK2907761T3 (en) | 2010-02-24 | 2011-02-19 | SEALING MACHINE |
CA2790492A CA2790492C (en) | 2010-02-24 | 2011-02-19 | Pouch machine with sealer |
US14/876,189 US10549874B2 (en) | 2010-02-24 | 2015-10-06 | Pouch machine with sealer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/711,894 US20110207589A1 (en) | 2010-02-24 | 2010-02-24 | Pouch Machine With Sealer |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/876,189 Continuation US10549874B2 (en) | 2010-02-24 | 2015-10-06 | Pouch machine with sealer |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110207589A1 true US20110207589A1 (en) | 2011-08-25 |
Family
ID=44476987
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US12/711,894 Abandoned US20110207589A1 (en) | 2010-02-24 | 2010-02-24 | Pouch Machine With Sealer |
US14/876,189 Expired - Fee Related US10549874B2 (en) | 2010-02-24 | 2015-10-06 | Pouch machine with sealer |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US14/876,189 Expired - Fee Related US10549874B2 (en) | 2010-02-24 | 2015-10-06 | Pouch machine with sealer |
Country Status (10)
Country | Link |
---|---|
US (2) | US20110207589A1 (zh) |
EP (2) | EP2907761B1 (zh) |
CN (2) | CN102883958B (zh) |
AU (1) | AU2011218822B9 (zh) |
BR (1) | BR112012021387A2 (zh) |
CA (1) | CA2790492C (zh) |
DK (1) | DK2907761T3 (zh) |
ES (1) | ES2617286T3 (zh) |
MX (1) | MX2012009445A (zh) |
WO (1) | WO2011106265A1 (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017100586A1 (en) * | 2015-12-10 | 2017-06-15 | Cmd Corporation | Method and apparatus for creating pouches or bags with multiphase sealing |
US20170326829A1 (en) * | 2016-05-16 | 2017-11-16 | Cmd Corporation | Method and Apparatus For Pouch or Bag Making |
CN112224528A (zh) * | 2020-09-15 | 2021-01-15 | 北京三快在线科技有限公司 | 外带物品打包机及其打包袋制作模块 |
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Publication number | Priority date | Publication date | Assignee | Title |
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US10882651B2 (en) | 2016-06-20 | 2021-01-05 | LEADRUN PACKAGING TECHNOLOGY Co., Ltd. | Sealing device |
CA3099147C (en) * | 2018-05-21 | 2022-08-30 | Totani Corporation | Heat seal device |
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US11220081B2 (en) * | 2016-05-16 | 2022-01-11 | Cmd Corporation | Method and apparatus for pouch or bag making |
CN112224528A (zh) * | 2020-09-15 | 2021-01-15 | 北京三快在线科技有限公司 | 外带物品打包机及其打包袋制作模块 |
Also Published As
Publication number | Publication date |
---|---|
BR112012021387A2 (pt) | 2016-10-25 |
ES2617286T3 (es) | 2017-06-16 |
CN105751486A (zh) | 2016-07-13 |
CA2790492C (en) | 2017-02-28 |
CN102883958B (zh) | 2016-04-06 |
CN102883958A (zh) | 2013-01-16 |
CA2790492A1 (en) | 2011-09-01 |
AU2011218822B9 (en) | 2015-07-16 |
EP2539231A4 (en) | 2014-09-03 |
WO2011106265A1 (en) | 2011-09-01 |
EP2539231A1 (en) | 2013-01-02 |
US10549874B2 (en) | 2020-02-04 |
MX2012009445A (es) | 2012-11-29 |
DK2907761T3 (en) | 2017-03-13 |
EP2907761B1 (en) | 2016-11-30 |
AU2011218822B2 (en) | 2015-03-12 |
AU2011218822A1 (en) | 2012-09-06 |
US20160023792A1 (en) | 2016-01-28 |
EP2907761A1 (en) | 2015-08-19 |
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