WO2022269558A1 - Appareil et procédé pour un transport de corps de sacs tubulaires sur une chaîne de production de fabrication de sacs et un changement progressif de la direction de transport d'une pièce découpée d'un corps de sac tubulaire et machine de fabrication de sacs ayant ledit appareil - Google Patents

Appareil et procédé pour un transport de corps de sacs tubulaires sur une chaîne de production de fabrication de sacs et un changement progressif de la direction de transport d'une pièce découpée d'un corps de sac tubulaire et machine de fabrication de sacs ayant ledit appareil Download PDF

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Publication number
WO2022269558A1
WO2022269558A1 PCT/IB2022/055879 IB2022055879W WO2022269558A1 WO 2022269558 A1 WO2022269558 A1 WO 2022269558A1 IB 2022055879 W IB2022055879 W IB 2022055879W WO 2022269558 A1 WO2022269558 A1 WO 2022269558A1
Authority
WO
WIPO (PCT)
Prior art keywords
gripping
cut piece
pulleys
support plate
transport
Prior art date
Application number
PCT/IB2022/055879
Other languages
English (en)
Inventor
Gaurav LOHIA
Original Assignee
Lohia Corp Limited
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
Application filed by Lohia Corp Limited filed Critical Lohia Corp Limited
Publication of WO2022269558A1 publication Critical patent/WO2022269558A1/fr

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/02Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
    • B65H29/04Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being carried by endless chains or bands
    • B65H29/042Intermediate conveyors, e.g. transferring devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/02Feeding or positioning sheets, blanks or webs
    • B31B70/04Feeding sheets or blanks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/003Flexible containers made from sheets or blanks, e.g. from flattened tubes made from tubular sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/30Orientation, displacement, position of the handled material
    • B65H2301/34Modifying, selecting, changing direction of displacement
    • B65H2301/341Modifying, selecting, changing direction of displacement without change of plane of displacement
    • B65H2301/3411Right angle arrangement, i.e. 90 degrees
    • B65H2301/34112Right angle arrangement, i.e. 90 degrees changing leading edge
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00Handling processes for sheets or webs
    • B65H2301/30Orientation, displacement, position of the handled material
    • B65H2301/34Modifying, selecting, changing direction of displacement
    • B65H2301/341Modifying, selecting, changing direction of displacement without change of plane of displacement
    • B65H2301/3412Modifying, selecting, changing direction of displacement without change of plane of displacement involving transport means arranged obliquely to the in-feed or/and out-feed conveyor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00Power transmission; Driving means
    • B65H2403/50Driving mechanisms
    • B65H2403/51Cam mechanisms
    • B65H2403/513Cam mechanisms involving elongated cam, i.e. parallel to linear transport path
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/30Chains
    • B65H2404/31Chains with auxiliary handling means
    • B65H2404/311Blades, lugs, plates, paddles, fingers
    • B65H2404/3111Blades, lugs, plates, paddles, fingers on two opposite chains or set of chains, i.e. having active handling section cooperating with and facing to each other
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00Parts for transporting or guiding the handled material
    • B65H2404/30Chains
    • B65H2404/31Chains with auxiliary handling means
    • B65H2404/315Details of arrangement of the auxiliary handling means on the chain(s)
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/17Nature of material
    • B65H2701/174Textile; fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00Handled material; Storage means
    • B65H2701/10Handled articles or webs
    • B65H2701/19Specific article or web
    • B65H2701/191Bags, sachets and pouches or the like

Definitions

  • the present invention relates to an apparatus for transporting tubular bag bodies on a bag making production line.
  • it relates to an apparatus and a method for transporting cut piece in the direction of their longitudinal axis followed by gradually changing the direction of their transport transversely to the longitudinal axis.
  • the invention further relates to a cut piece of planar object (or simply a cut piece) which can be a sheet (metallic or non-metallic or corrugated, fabric), or woven or non-woven fabric (either non tubular or tubular including gusseted or non-gusseted)or wooden sheets as the case may be.
  • Document DE 19 29 600 A1 describes a device for transporting flat tube sections from which bags are made.
  • the tube pieces are alternately deposited in the longitudinal transport direction via a wedge-shaped pivotable switch element on an ascending upper conveying surface and a descending lower conveying surface.
  • a transfer device adjoins the upper or lower conveying surface, each having a support surface on which the tube pieces pass from the longitudinal transport direction into the transverse transport direction.
  • the pieces of tubing then transported in the transverse direction are brought together again by means of conveyor belts.
  • tubular bag bodies are travelling in two levels that makes system complicated and also have accessibility issues.
  • the issues involve various factors such as more complex assembly and number of parts which hinders the easy removal of bag bodies if stuck due to machine breakdown.
  • EP 3148789B 1 discloses a device for transporting tubular sack bodies, with a longitudinal transport device with which the tubular sack bodies can be transported essentially in the direction of their longitudinal extent, with a transverse transport device with which the tubular sack bodies can be transported substantially perpendicular to their longitudinal extent.
  • the main drawback of such kind of system is that while transport bag bodies from one direction to another, the system must stop for a moment so as to ensure that the bag does not deviate from the desired position and thus ensure there is no sideways movement of bag.
  • EP 3148789B1 also discloses a complex structure of bag transportation which reduces the overall efficiency of the system.
  • Document DE 102009000893A1 describes a device for changing the direction of transport of flat pieces of tubing.
  • the tube pieces are pushed one after the other in the longitudinal direction onto a support surface in order to be taken along by a transfer device in the transverse direction.
  • the tube piece Before a tube piece can be transported away in the transverse direction, the tube piece must first rest with its side area on the transverse transport plane so that the side area can be grasped by the transfer device.
  • the tubular fabric moves first in the longitudinal direction, then it stops momentarily before starting to move in the transverse direction.
  • a drawback of this scheme is that due to the momentary stoppage of the tubular bag there are chances of bag shifting to occur.
  • the present invention provides a simplified and efficient transfer device which provides a smooth and gradual change in direction during the transport of the tubular bag bodies is brought about.
  • the main objective of the present invention is to provide an apparatus and a method of transferring cut piece from a longitudinal transport device to a cross-transport device.
  • Another object of the present invention is to provide an apparatus and a method to transfer cut piece from longitudinal to transverse direction with structurally straightforward means and at the same time ensuring absence of operational failures.
  • a further object of the present invention is to provide an apparatus and a method to transfer cut piece from longitudinal to transverse direction in such a way that the production rate of the finished bag bodies is increased.
  • Yet another object of the present invention is to provide an apparatus and a method to transfer cut piece from longitudinal to transverse direction wherein the cut piece moves continuously and gradually without any stoppage.
  • a still further object of the present invention is to provide an apparatus and a method to transfer cut piece from longitudinal to transverse direction such that cutting apparatus, longitudinal transport device and cross transport device are synchronised in order to provide better repeatability of final position of tubular bag bodies such that level shifting of the bag can be avoided.
  • Another objective of the present invention is to provide an apparatus and a method to transfer cut piece from longitudinal to transverse direction wherein the tubular bag bodies are being transported run on a single plane to get better accessibility.
  • Still another object of the present invention is to provide an apparatus and a method to transfer cut piece from longitudinal to transverse direction with reduced maintenance and incidences of malfunction.
  • Yet another objective of the present invention is to provide an apparatus and a method to transfer cut piece from longitudinal to transverse direction that is suitable for different tubular bag sizes with minimal manual adjustment.
  • Figure 1 shows a schematic view of the apparatus/device position of the present invention and the movement of cut piece
  • Figure 2 shows perspective view of the apparatus of the present invention
  • Figure 3 shows a perspective view of top of the upper deck
  • Figure 4 shows a perspective view of bottom of the upper deck
  • 5 shows a transport means
  • Figure 6 shows a gripping means
  • FIG.A shows cross section view of gripping means as shown in figure 6
  • Figure 6B shows an embodiment of the gripping means
  • Figure 7 shows mounting of upper gripping means and its movement different positions of gripping
  • Figure-7A shows movement of gripping means inside the grooved path and over the collar track
  • Figure 7B shows the pin arrangement inside the chain as well as gripping means
  • Figure 8 shows cross sectional view of the gripping means and its movement during cut piece transfer
  • Figure 9 shows air nozzle system pushing cut piece as indicated by arrow List of parts:
  • Transverse transport device IOA First support plate 4 A. Second conveyer 10 A’. Upper surface of first
  • Carrier body IOD First grooved plate
  • Transport means 11B Second grooved plate 7 A. Chain 11B ⁇ Upper surface of second
  • the present invention discloses an apparatus and a method for transporting tubular bag bodies on a bag making production line.
  • the apparatus and a method describe herein how to transport cut piece in the direction of their longitudinal axis followed by gradually changing the direction of their transport transversely to the longitudinal axis.
  • the invention disclosed herein has one longitudinal transport device (2), one cross transport device (3) on which apparatus of invention (8) is mounted, and a transverse transport device (4) to transfer cut piece (5) from longitudinal direction to traverse direction.
  • the cut piece (5) can be woven or non- woven fabric or can be a sheet of variable thickness or can be corrugated preferably lighter in weight.
  • the cut piece (5) is made to transfer gradually from longitudinal direction to traverse direction.
  • the apparatus of present invention (8) is disclosed for the smooth movement of cut piece gradually from longitudinal direction to the traverse direction without stoppage.
  • the apparatus (8) further gradually, gently and synchronously, transports the cut piece (5) in an inclined line or direction and a transverse transport device synchronously transports the cut piece (5) in the transverse direction of the tubular bag.
  • the movement of the cut piece (5) in the inclined line makes movement path shorter when compared to the movement of bag bodies that occurs in the perpendicular fashion.
  • Such kind of inclined movement makes the cut piece (5) to move without stopping momentarily at the time of the direction change which reduces the overall timing of the movement of the cut piece (5) from cutting device (1) to the final disposition.
  • the gripping means (6) which comprises of gripping unit (6’, 6”), follows a groove path (19) such that during one cycle of cut piece (5) transfer, the upper and lower gripping units (6’, 6”) come in contact with each other such that gap between them is near to zero, thereby gripping the cut piece (5) between them and transporting it gradually along the inclined direction leading to the traverse direction.
  • the upper gripping unit is pulled upwards (6’) and lower gripping unit (6”) is pulled downwards to create a gap.
  • the created gap releases the cut piece (5) which then travels in the transverse direction.
  • air nozzles (17) are provided which not only push the cut piece (5) further in the forward direction of traverse but also creates a pressure onto the cut piece (5) such that it is not deviated from its position.
  • the cut piece (5) is now transferred for further processing required to be converted into bag.
  • Figure 1 shows few units of an automated system of bag manufacturing, comprising a longitudinal transport device (2) which moves cut piece (5) in the longitudinal extension direction after they are cut from the continuous fabric (9) by a cutting device (1).
  • the longitudinal transport device (2) is synchronously driven with respect to the cutting device (1) such that tubular bag bodies (5) can easily be transported in the longitudinal direction without any lag in operation due to the synchronous transport means (7).
  • a plurality of the gripping means (6) is provided to hold the cut piece (5) in a position that allows the cut piece (5) to be continuously and gradually transported to a cross transport device (3).
  • the longitudinal transport device (2) further comprises of first conveyor (2A) on which the continuous fabric
  • FIG. 1 shows a perspective view of the apparatus (8) of invention which is mounted on cross transport device (3) responsible for transferring the cut piece (5) from longitudinal direction to the traverse direction with gradual change in direction. This gradual change in direction is performed by apparatus (8).
  • the cross transport device (3) mainly comprises of plurality of belts on the conveying system to provide a base to a cut piece (5) and an inventive apparatus (8) is mounted over it.
  • the apparatus (8) comprises of an upper deck (10) and a lower deck (11) which are mirrored to each other in construction but not necessarily so.
  • the upper deck (10) is connected with a cylinder (13) at one end and can swivel about rotatory connection (16) at other end as shown by arrow in figure 2.
  • the cylinder (13) is connected to a hinge (15) which is mounted first support plate (10A).
  • the connection of the hinge (15) with first support plate (10A) can be obtained by various methods like bolting, screwing, welding, or any kind of method which provides a sturdy connection between them.
  • the apparatus (8) further comprises of at least one or more but preferably three transport means (7) and at least one or more but preferably two gripping means (6), wherein each transport means (7) carries the cut piece (5) to change the direction of movement of the cut piece (5) gradually.
  • the transport means (7) which are identical in construction for both upper deck
  • manual actuation of the cylinder (13) in the upward direction lifts the upper deck (10) in the direction shown in the figure 2 such that the upper deck (10) is opened and a large gap is created between the upper deck (10) and lower deck (11). This gap helps in the maintenance during any fault or for removing cut piece (5) when stuck during high- speed movement.
  • FIG 3 shows the perspective view of the upper deck (10) showing its constructional features.
  • the upper deck (10) comprises of first support plate (10A) which can be made from a thick sheet or plate of metallic or non-metallic material such that it bears the load of the components mounted on it.
  • Multiple first set of pulleys (IOC) is placed alternatively one after the other, on the upper surface of the first support plate (10A’).
  • Pulleys (IOC) which are free to rotate, are connected to upper surface of upper deck (10A’) via connecting flange (7C).
  • First set of idler pulleys (10F) are mounted on the upper surface of upper deck (10 A’) in same fashion as that of pulleys (IOC), and placed alternatively between the first set of pulleys (IOC).
  • first belt (10B) is rolled over the pulleys (IOC) and idlers pulleys (10F) to provide synchronous drive to each pulley of the first set of pulleys (IOC) and the idler pulleys (10F).
  • a first motor (12) is mounted on the upper surface of the first support plate (10A’) via motor flange (12A) and is connected to pulleys (IOC and 10F) and belt via a connecting shaft (12B) such that rotation of the first motor (12) provides equal rotations to the first set of pulleys (IOC).
  • the main purpose of the first set of idler pulleys (10F) is that they provide adequate tension to the first belt (10B) such that there is no slippage between the belt (10B) and pulley (IOC, 10F) during belt movement.
  • a plurality of connecting flange (7C) is mounted on the upper surface of the first support plate (10A’) which are connected to the sprocket (20) as shown in figure 5.
  • plurality of air nozzles (17) through which controlled amount of air is flown by the flow controller (18) are present such that controller air is thrown onto the cut piece (5) which make it move forwards in the traverse direction just after been thrown by the gripping means (6).
  • a uniform pressure is built up due to the air nozzles (17) such that it secures the cut piece (5) in its position without deviating from its path.
  • the upper deck (10) further comprises of first grooved plate (10D) which is connected with the first support plate (10A) via spacers (10E).
  • the spacers (10E) can be rectangular or circular in cross section or of any shape such that it creates a gap between the first support plate (10A) and first grooved plate (10D). The gap created to accommodate the transport means (7) as well as gripping means (6).
  • the first grooved plate (10D) has upper surface (10D’) and lower surface (10D”) which are identical surfaces having collar track (21) all around it.
  • the first grooved plate (10D) can be constructed from plate which can be metallic or non-metallic preferably high grade plastic material.
  • the main reason or preference of using high grade plastic material is that the collar track (21) which is engraved to a depth on the upper and lower surface ( 10D’, 10D” ) can be easily constructed as well as it provides a smooth movement to gripping means (6) which move inside the groove path (19) as well as supported on the collar tack (21) as further shown in figure 7.
  • the depth of the collar track (21) is atleast one fourth of the width of the upper or lower flange.
  • the use of metallic element in construction of the grooved plate (10D) might create a friction during movement of gripping means (6) and can cause wear and tear in long run.
  • the material chosen can be metallic which high grade finish, stainless steel which super finish or brass which impregnated copper for extra lubrication.
  • Figure 5 shows the transport means (7) which comprises of first set of pulleys (IOC) which are connected to the sprocket (20) via connecting flange (7C).
  • the sprocket (20) has same rotational speed as that of the pulleys (IOC) which is being driven by the first motor (12). All the driven pulleys (IOC) and plurality of sprocket (20) are synchronised at same speed.
  • An endless chain (7 A) is provided which is connected to the sprocket (20) to move in the predetermined path.
  • the chain (7 A) are the mechanical drive elements which can be chosen from the set of roller chains, silent chain, leaf chain, flat top chain, engineering steel chain or any other type of chain which transmit the object from one place to another without any slippage.
  • roller chain which comprises of an inner plate (roller link plate), outer plate (pin link plate), bushes, pins, and rollers.
  • the rollers are placed equidistantly between chain links.
  • a chain guide (7D) which can be C- or U-channel, is provided such that it guides the chain (7 A) between it to make it travel in the predetermined track.
  • the chain guide (7D) is preferably made up of softer material than steel or can be made of plastic such that any looseness in the chain (7 A) will not create metal to metal frictional forces.
  • the upper gripping unit (6’) is connected to the chain (7 A) with the help of chain guide pin (22) as shown in figure 7.
  • FIG. 6 shows constructional features of the gripping means (6).
  • the gripping means (6) comprises of upper gripping unit (6’) and lower gripping unit (6”).
  • the upper gripping unit (6’) consists of carrier body (6A) which is circular in cross section.
  • the carrier body (6A) has upper and lower flange (6B, 6C) protruding outside which follows the same path of cross section as that of carrier body (6A).
  • the carrier body (6A) is made light in construction such that it does not creates pressure on the collar track (21) during its movement and provide a less friction operation.
  • the carrier body (6A) can be constructed by choosing materials such as high grade plastic or metallics or non-metallics such as aluminium, brass, or stainless steel or normal steel can also be used to construct such that weight of the carrier body obtained is as minimum as can be. Thus, to obtain less weight pularity of cuts are made to remove the extra laden material.
  • the carrier body (6A) carries guide pin (6D) in an elongated guiding slot (6E).
  • the slot (6E) facilitates the up and down movement of the guide pin (6D).
  • the guide pin (6D) is attached to a griping block (6G) via a first connecting shaft (6F) to form a single body. Making a single body will eventually move the gripping block (6G) along with the guide pin (6D).
  • the guiding slot (6E) can be coated which the layer of nonabrasive material to provide frictionless surface for guide pin (6D) to move up and down.
  • the guide pin (6D) has a protrusion (61) out of the guiding slot (6E) which is guided in the grooved path (19) as shown in figure 7 .
  • Holes (6J) at the top of the carrier body (6A) is provided for the chain guide pin (22) to be inserted inside.
  • the gripping means (6) further comprises of lower gripping unit (6’ ’) which has an identical carrier body (6A).
  • the lower gripping means (6”) differs from the upper gripping means (6’) such that the gripping block (6G) is replaced by the gripping magnet (6H).
  • the gripping magnet (6H) comes in contact with the gripping block (6G) (which is metallic in construction) along with the cut piece (5) and grips it to transfer it to the desired location.
  • FIG. 6A Another aspect of the present invention is that the heads of the gripping units (6’, 6”) are rotatable as shown in figure 6A.
  • a cross sectional view of figure 6 is shown in figure 6A where gripping means (6) are shown.
  • the shaded part shown in the figure 6A forms a single unit and can be rotated about an axis as shown by broken line.
  • the shaded part in case of upper gripping unit (6’) comprises of the first connecting shaft (6F)
  • gripping block (6G) can be rotated inside the carrier body (6A)
  • gripping magnet (6H) can be rotated inside the carrier body (6A). This rotation facilitates the smooth gradual transfer of the cut piece (5) along the corners.
  • the upper and lower gripping unit (6’, 6”) can be constructed such that the protrusion (61) is welded or bolted with the outer housing (6L) which is coupled with the first and second connecting shafts (6F and 6F’) thereby connected with the gripping block (6G) or gripping magnet (6H).
  • gripping unit has an inner housing (6K) which can be slid inside the outer housing (6L). The sliding movement is performed by the motion of the protrusion (61) inside the curved grooved path (19).
  • the inner housing (6K) is driven by the chain (7 A) connected via pin arrangement or can be welded or screwed.
  • the inner housing (6K) can be made up of materials with low frictional properties such that it can slide inside the outer housing (6L).
  • the materials can be like high grade plastic with super finish, brass with impregnated copper, super finish stainless steel, or can be any type of material which creates very less to no friction.
  • the carrier body (6A) does not have upper and lower flange (6B, 6C) which minimises the frictional losses occurred during contact type movement of the flange (6B) with the collar track (21).
  • the apparatus (8) has a unique constructional arrangement or assembly of the gripping means (6) with the transport means moving along the grooved path (19) as shown in figure 7 and 7A.
  • the chain (7 A) which is driven by the sprocket (20) is coupled with the upper gripping means (6’).
  • the connection of the chain (7 A) with the carrier body (6 A) of gripping means (6’) is done via chain guide pin (22).
  • the cone end of the chain guide pin (22) is inserted into the holes (6J) on the carrier body (6A) and second end is inserted into the chain (7 A) to form a single body.
  • the chain (7 A) drives the upper gripping means (6’) along the groove path (19) such that the upper flange (6B) follows the collar track (21).
  • the upper and lower gripping unit (6’, 6”) at position A comes in contact with each other creating zero gap or no gap while at position B both, the upper and lower gripping unit (6’, 6”) are a distance apart creating a gap between the gripping block (6G) and gripping magnet (6H).
  • the no-gap condition directly relates to the position of cut piece (5) gripped by the gripping means (6) and at the with-gap condition the cut piece (5) is released to the predetermined position.
  • the upper gripping unit (6’) which has a gripping block (6G) comprises of a spring (23) contained inside it which provides a cushioning effect during griping of the cut piece (5).
  • the constructional features of the lower deck (11) are not explicitly defined as it can be corelated to the upper deck (10) with similar in construction. But the second grooved plate (1 IB) is just a mirror of the first grooved plate (10 D) such that the profile of the groove path (19) is different due to which opposite movement of the upper and lower gripping unit (6’, 6”) happens .
  • the apparatus of invention (8) comprises of following: a) Cut piece (5) which are formed by cutting a continuous fabric (9) by the cutting device (1). b) Longitudinal transport device (2) which transports cut piece(5) in the longitudinal direction. c) Gripping means (6) which rotates about the transport means (7) to comes to position A and grips the cut piece(5). d) Cross transport device (3) which transport the cut piece(5) in the inclined direction to the transverse direction to release at position B. e) Transverse transport device (4) to transport cut piece (5) further in the transverse direction.
  • the method of transporting tubular bag bodies from longitudinal to transverse direction in a smooth, gradual, synchronised, and continuous manner involves following steps: a) Cut pieces (5) are formed by cutting a continuous fabric (9) by the cutting device (1). b) The cut piece (5)are transported in the longitudinal direction by longitudinal transport device (2). c) Gripping means (6) rotates about the transport means (7) and comes to position A. d) The upper gripping means (6’) and lower gripping means (6”) comes in contact which each other along with the cut piece in between. e) Cut piece (5) are gripped at position A. f) Cut piece (5) now transported in the inclined direction by cross transport device (3) due to the movement of the chain (7 A) which is placed in the inclined fashion.
  • Cut piece (5) gripped by gripping means (6) and travelling over transport means (7), are transported in the transverse direction to position B where the upper and lower gripping unit (6’, 6”) are far apart.
  • Cut piece (5) are then transported in the transverse direction by the transverse transport device (4).
  • the invention discloses an apparatus (8) for gradually changing the transport direction of a cut piece (5) of a tubular bag body.
  • the characterising aspects of the apparatus is that it comprises: one longitudinal transport device (2), one cross transport device (3), and a transverse transport device (4) situated after cross transport device (3) to the transfer cut piece (5) from longitudinal direction to transverse direction, wherein said apparatus (8) is mounted on said cross transport device (3); an upper deck (10) and a lower deck (11), wherein said upper deck (10) is connected with a cylinder (13) at one end and can swivel about rotatory connection (16) at another end, and wherein said cylinder (13) is connected to a hinge (15) which is mounted first support plate (10A) and wherein said lower deck (10) is a mirror image of said upper deck (11), at least one transport means (7) and at least one gripping means (6), wherein each transport means (7) is capable of carrying the cut piece (5) to change the direction of movement of the cut piece (5) gradually, wherein the transport means (7) in the form
  • connection of the hinge (15) with first support plate (10A) is obtained by bolting, screwing, or welding.
  • all driven pulleys (IOC) and plurality of sprocket (20) are synchronised at same speed.
  • the spacers (10E) rectangular or circular in cross section.
  • the first grooved plate (10D) is metallic or non-metallic, preferably high grade plastic material.
  • the depth of the collar track (21) is at least one fourth of the width of the upper or lower flanges (10, 11).
  • the gripping means (6) comprises of upper gripping unit (6’) and lower gripping unit (6”), wherein the upper gripping unit (6’) consists of carrier body (6A) which is circular in cross section and protruding outside and which follows the same path of cross section as that of carrier body (6A), and wherein the carrier body (6 A) has upper and lower flange (6B, 6C) protruding outside which follows the same path of cross section as that of carrier body (6A).
  • the carrier body (6A) is constructed of high grade plastic or metallics or non-metallics such as aluminium, brass, or stainless steel or steel.
  • the carrier body (6A) has a guide pin (6D) in a guiding slot (6E) that facilitates the up and down movement of the guide pin (6D) which is attached to a griping block (6G) via connecting shaft (6F) to form a single body, thereby allowing the gripping block (6G) to move along with the guide pin (6D).
  • the guiding slot (6E) is coated which the layer of nonabrasive material to provide frictionless surface for the movement of the guide pin (6D).
  • the guide pin (6D) has a protrusion (61) out of the guiding slot (6E) which is guided in a grooved path (19) that is provided on the underside of the lower surface (10A”) of first support plate (10A).
  • the holes (6J) are provided at the top of the carrier body (6A) the chain guide pin (22) to be inserted inside.
  • the lower gripping means (6”) has a gripping magnet (6H) in place of the gripping block (6G).
  • the heads of the gripping units (6’, 6”) are rotatable.
  • the upper gripping unit (6’) has a first connecting shaft (6F) provided on the gripping block (6G) with which it can be rotated inside the carrier body (6A).
  • the lower gripping unit (6”) has a second connecting shaft (6F) to which the gripping magnet (6H) is attached and with which it is rotatable inside the carrier body (6A).
  • the grooved path (19) has an uneven profile whereby during the movement of the endless chain (7A), the upper gripping unit is pulled upwards (6’) and lower gripping unit (6”) is pulled downwards to create a gap between the gripping block (6G) and the gripping magnet (6H), the gap being closed when the cut piece (5) travels in the transverse direction.
  • the gripping means (6) comprises of upper gripping unit (6’) and lower gripping unit (6”) each consisting of an outer housing (6L) into which an inner housing (6K) which is driven by the chain (7 A) is slidable, and wherein the protrusion (61) is welded or bolted with the outer housing (6L), further wherein the outer housing (6L) which is coupled with the first and second connecting shafts (6F and 6F’) thereby connected with the gripping block (6G) or gripping magnet (6H).
  • the inner housing (6K) is made up of high grade plastic, brass with impregnated copper, or stainless steel, or low friction coefficient material.
  • the invention discloses a method for gradually changing the transport direction of a cut piece (5) of a tubular bag body using the apparatus as disclosed in the foregoing embodiments.
  • the characterising aspect of the method is that it has the following steps: a. transporting the cut piece (5) in the longitudinal direction by the longitudinal transport device (2), b. rotating the gripping means (6) rotates about the transport means (7) and bringing it to position A, c. bringing the upper and lower gripping means (6’, 6) in contact which each other along with the cut piece in (5) between and thereby gripping the cut piece (5) between the upper and lower gripping means (6, 6’) at the position
  • step f controlled amounted of air is flown out of the air nozzles (17) by a flow controller (18) are present such that the released cut piece moves forwards in the traverse direction just after been thrown by the gripping means (6).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Structure Of Belt Conveyors (AREA)

Abstract

L'invention concerne un appareil et un procédé pour un transport d'une pièce découpée dans la direction de son axe longitudinal, suivi d'un changement progressif de la direction de son transport transversalement à l'axe longitudinal. L'invention comprend un dispositif de transport longitudinal (2), un dispositif de transport de croisement (3) sur lequel un appareil selon l'invention (8) est monté, et un dispositif de transport transversal (4) pour transférer une pièce découpée (5) de la direction longitudinale à une direction de traverse. Pendant le changement de direction, un moyen de préhension (6), qui comprend une unité de préhension (6', 6''), suit un trajet de rainure (19) de telle sorte que, pendant un cycle de transfert de pièce découpée (5), les unités de préhension supérieure et inférieure (6', 6'') viennent en contact l'une avec l'autre de telle sorte qu'un intervalle entre elles est proche de zéro, saisissant ainsi la pièce découpée (5) entre elles et transportant celle-ci progressivement le long de la direction inclinée menant à la direction de traverse.
PCT/IB2022/055879 2021-06-25 2022-06-24 Appareil et procédé pour un transport de corps de sacs tubulaires sur une chaîne de production de fabrication de sacs et un changement progressif de la direction de transport d'une pièce découpée d'un corps de sac tubulaire et machine de fabrication de sacs ayant ledit appareil WO2022269558A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202111028687 2021-06-25
IN202111028687 2021-06-25

Publications (1)

Publication Number Publication Date
WO2022269558A1 true WO2022269558A1 (fr) 2022-12-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2022/055879 WO2022269558A1 (fr) 2021-06-25 2022-06-24 Appareil et procédé pour un transport de corps de sacs tubulaires sur une chaîne de production de fabrication de sacs et un changement progressif de la direction de transport d'une pièce découpée d'un corps de sac tubulaire et machine de fabrication de sacs ayant ledit appareil

Country Status (2)

Country Link
TW (1) TWI831265B (fr)
WO (1) WO2022269558A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009000893B4 (de) * 2008-07-31 2015-03-19 Windmöller & Hölscher Kg Verfahren und Vorrichtung zum Transport von flachen Werkstücken
US9174806B2 (en) * 2010-12-09 2015-11-03 Specialty Conveyor B.V. Transfer conveyor and a conveying system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWM253382U (en) * 2004-04-02 2004-12-21 Hsin Lung Accessories Co Ltd Body fitting pedal-type exercise device
TWM278483U (en) * 2005-03-03 2005-10-21 Jui Erh Li Co Ltd Improved joint structure for paint cup of paint spraying gun
AT516092B1 (de) * 2014-05-20 2016-05-15 Lohia Corp Ltd Vorrichtung und Verfahren zum Transport von schlauchförmigen Sackkörpern

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009000893B4 (de) * 2008-07-31 2015-03-19 Windmöller & Hölscher Kg Verfahren und Vorrichtung zum Transport von flachen Werkstücken
US9174806B2 (en) * 2010-12-09 2015-11-03 Specialty Conveyor B.V. Transfer conveyor and a conveying system

Also Published As

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TWI831265B (zh) 2024-02-01
TW202306871A (zh) 2023-02-16

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