TW202306871A - An apparatus and a method for transporting tubular bag bodies on a bag making production line and gradually changing the transport direction of a cut piece of a tubular bag body and a bag making machine having said apparatus - Google Patents

Abstract

The invention discloses 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 disclosed 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. During the direction change, a 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.

Description

A device and method for conveying tubular bags on a bag-making production line and gradually changing the conveying direction of cut pieces of the tubular bags, and a bag-making machine having the device

The invention relates to an apparatus for conveying tubular bags on a bag making line. In particular, the invention relates to a device and a method for conveying a cut sheet in the direction of its longitudinal axis, followed by a gradual change in the conveying direction of the cut sheet transversely to this longitudinal axis. The present invention further relates to a cutting sheet (or simply a cutting sheet) of a planar object, which may be a thin sheet (metallic or non-metallic or corrugated fabric), or woven or non-woven fabric (non-tubular or tubular, including seam Gusseted or not sewn with gussets) or wood chips, as the case may be.

Many conveying devices and methods for conveying bags are known. Document DE 19 29 600 A1 describes a device for conveying flat tube sections made into bags. The segments are placed alternately on a rising upper conveying surface and a descending lower conveying surface in the longitudinal conveying direction via a wedge-shaped pivotable switch element. A conveyor adjoins the upper or lower conveying surface, each conveying surface having a support surface on which the segments are transferred from the longitudinal conveying direction to the transverse conveying direction. The segments transported in the transverse direction are then brought together again by means of the conveyor belt.

In the above prior art, the disadvantage is that the tubular bags travel on two levels, which complicates the system and also has accessibility problems. These problems involve various factors, such as relatively complex assembly and number of parts, which prevent easy removal of the pouch if jamming occurs due to machine failure.

Furthermore, EP 3148789 B1 discloses a device for conveying tubular bags having a longitudinal conveying device with which they can be conveyed substantially in the direction of the longitudinal extent of the tubular bags, with which they can be substantially perpendicular to the The longitudinal extent of the bag conveys one of the transverse conveying means of the tubular bag. The main disadvantage of this type of system is that when the bags are being transported from one direction to the other, the system must be stopped for a moment in order to ensure that the bags do not deviate from the desired position and thus ensure that there is no sideways movement of the bags. Furthermore, EP 3148789B1 also discloses a complicated bag delivery structure which reduces the overall efficiency of the system.

Document DE 102009000893 A1 describes a device for changing the conveying direction of flat tube segments. The segments are pushed one after another in the longitudinal direction onto a support surface to be carried in the transverse direction by a conveyor. Before a segment can be transported away in the transverse direction, the segment must first rest with its side regions on the transverse transport plane so that the side regions can be gripped by the conveyor. The tubular fabric first moves in the longitudinal direction, then it stops momentarily before starting to move in the transverse direction. One disadvantage of this solution is that, due to the momentary stop of the tubular bag, displacement of the bag may occur.

All of the above bag transfer methods involve the bag moving in both the longitudinal direction as well as the transverse direction when transferring the bag through 90 degrees. Therefore, the bag must travel a greater distance, which in turn increases the time for bag transfer.

In order to overcome the above-mentioned problems associated with the conveying device used in the bag-making production line as disclosed in the above-mentioned prior art documents, the present invention provides a simplified and efficient conveying device which provides one of the conveying periods causing tubular bags. Smooth and gradual direction changes.

Purpose of the present invention:

The main object of the present invention is to provide an apparatus and method for transferring cut sheets from a longitudinal conveying device to a transverse conveying device.

Another object of the present invention is to provide an apparatus and a method for transferring cut sheets from longitudinal to transverse direction using structurally simple components while ensuring no operational failures.

Another object of the present invention is to provide an apparatus and method for transferring cut sheets from the longitudinal direction to the transverse direction in such a way as to increase the production rate of finished bags.

Yet another object of the present invention is to provide an apparatus and method for conveying cut sheets from the longitudinal direction to the transverse direction, wherein the cut sheets move continuously and gradually without any stops.

Yet a further object of the present invention is to provide a method for conveying cut sheets from the longitudinal to the transverse direction, so that the cutting device, the longitudinal conveying device and the transverse conveying device are synchronized in order to provide better repeatability of the final position of the tubular bag so that Apparatus and method for avoiding layer displacement of bags.

Another object of the present invention is to provide an apparatus and method for conveying cut sheets from longitudinal to transverse direction, wherein the tubular bags are conveyed on a single plane for better accessibility.

Yet another object of the present invention is to provide an apparatus and method for reducing maintenance and failure rates for conveying cutting sheets from the longitudinal direction to the transverse direction.

Yet another object of the present invention is to provide an apparatus and method for conveying cut sheets from longitudinal to transverse direction with minimal manual adjustment for different tubular bag sizes.

The present invention discloses an apparatus and method for conveying tubular bags on a bag making line. The apparatus and method described herein conveys the cut sheet in the direction of its longitudinal axis, followed by a gradual change in the conveying direction of the cut sheet transverse to the longitudinal axis.

The invention disclosed herein has a longitudinal conveying device (2), a transverse conveying device (3) on which the inventive apparatus (8) is mounted, and is used to convey the cut sheet (5) from the longitudinal direction to the transverse direction One of the directions transports the device (4) transversely. The cutting sheet (5) may be a woven or non-woven fabric or may be a thin sheet of variable thickness or may be corrugated, preferably light in weight. The cut sheet (5) is conveyed gradually from the longitudinal direction to the transverse direction.

The inventive device ( 8 ) is disclosed for gradually and smoothly moving the cutting sheet from the longitudinal direction to the transverse direction without stopping. The equipment (8) further transports the cut pieces (5) gradually, gently and synchronously in an inclined line or direction, and a transverse conveying device synchronously transports the cut pieces (5) in the transverse direction of the tubular bag.

The movement of the cutting blade (5) on an inclined line results in a shorter path of movement when compared to the movement of the bag which occurs in a vertical manner. This tilting movement allows the cutting blade (5) to move without momentarily stopping when the direction changes, which reduces the overall time for the cutting blade (5) to move from the cutting device (1) to the final arrangement.

When the cutting sheet (5) is conveyed from the longitudinal direction further towards the pulling direction, the clamping member (6) comprising the clamping unit (6', 6'') follows a groove path (19) such that (5) During the transfer cycle, the upper and lower clamping units (6', 6'') contact each other so that the gap between them is close to zero, thereby clamping the cutting sheet (5) between them and moving along the The cutting discs (5) are gradually transported in an oblique direction towards the transverse direction. Once the cutting blade (5) reaches near the start of the transverse direction, due to the uneven groove path (19) (as shown in Figure 8), the upper clamping unit (6') is pulled upwards and the lower clamping unit (6'') is pulled down to create a gap. The resulting gap releases the cutting blade (5), which then travels in the transverse direction. Furthermore, air nozzles (17) are provided which not only push the cutting blade (5) further in the forward transverse direction but also generate a pressure on the cutting blade (5) so that the cutting blade (5) does not deviate from its position.

The cut sheet (5) is now conveyed for further processing required for conversion into bags.

The apparatus and method of the present invention are disclosed below.

Figure 1 shows several units of an automated system for the manufacture of bags, comprising a longitudinal conveying device (2) which cuts cut sheets (5) from a continuous fabric (9) by means of a cutting device (1) The cutting disc (5) is then moved in the direction of longitudinal extension. The longitudinal conveying device (2) is driven synchronously with respect to the cutting device (1) so that the tubular bags (5) can be easily conveyed in the longitudinal direction due to the synchronous conveying member (7) without any hysteresis in operation. A plurality of clamping members (6) are provided to hold the cutting sheet (5) in a position that allows the cutting sheet (5) to be transported continuously and gradually to a traversing conveying device (3). The longitudinal transport device (2) further comprises a first conveyor (2A) on which the continuous fabric (9) is transported. The continuous fabric (9) is gripped by the first conveyor belt (2B) so that the fabric is conveyed in the longitudinal direction without deviating from the edge of the conveyor. Figure 2 shows a perspective view of the device (8) according to the invention mounted on a traversing conveyor (3) responsible for moving the cut sheet (5) from the longitudinal direction with a gradual change of direction Teleport to landscape orientation. This gradual change of direction is performed by the device (8). The traversing conveyor (3) mainly consists of belts on a conveyor system to provide a base for a cutting blade (5) and above which an inventive device (8) is mounted. The apparatus (8) comprises an upper stack (10) and a lower stack (11), which are but not necessarily mirror images of each other in construction. The upper stack (10) is connected at one end to a cylinder (13) and is rotatable at the other end about a swivel connection (16), as shown by the arrow in FIG. 2 . The cylinder (13) is connected to a hinge (15) where the first support plate (10A) is mounted. The connection of the hinge (15) to the first support plate (10A) can be obtained by various methods such as bolting, screwing, welding or any kind of method providing a firm connection between them. The apparatus (8) further comprises at least one or more but preferably three conveying members (7) and at least one or more but preferably two gripping members (6), wherein each conveying member (7) carries a cut sheet ( 5) To gradually change the moving direction of the cutting piece (5).

Transport members (7) structurally identical for both the upper stack (10) and the lower stack (11) are mounted on the lower surface (10A'') of the first support plate and the upper surface (11A' of the second support plate) respectively )superior.

Furthermore, in the event of a fault, manually actuating the cylinder (13) in the upward direction lifts the upper stack (10) in the direction shown in Figure 2, so that the upper stack (10) opens and the upper stack (10) ) and a large gap between the lower stack (11). This clearance facilitates maintenance during any breakdown or for removing the cutting disc (5) if it jams during high speed movement.

Figure 3 shows a perspective view of the upper stack (10), showing its structural features. The upper stack (10) comprises a first support plate (10A), which may be made of a thick sheet or plate of metallic or non-metallic material, so that it carries the load of the components mounted on it. A plurality of first set of pulleys (10C) are staggered one after another on the upper surface (10A') of the first support plate. A freely rotating pulley (10C) is connected to the upper surface (10A') of the upper stack via a connecting flange (7C). The first set of idler pulleys (10F) are mounted on the upper stack surface (10A') of the upper stack in the same manner as the pulleys (10C) and are interleaved between the first set of pulleys (10C). In addition, a first belt (10B) rolls over the pulley (10C) and idler pulley (10F) to provide a synchronous drive to each pulley of the first set of pulleys (10C) and idler pulley (10F). A first motor (12) is mounted on the upper surface (10A') of the first support plate via a motor flange (12A) and is connected to the pulleys (10C and 10F) and the belt via a connecting shaft (12B), so that the first Rotation of a motor (12) provides equal rotation to the first set of pulleys (10C). The main purpose of the first set of idler pulleys (10F) is that they provide sufficient tension to the first belt (10B) such that there is no slippage between the belt (10B) and the pulleys (10C, 10F) during belt movement.

Furthermore, a plurality of connection flanges (7C) connected to the sprocket (20) as shown in Fig. 5 are mounted on the upper surface (10A') of the first support plate. As shown in Figure 9, there are a plurality of air nozzles (17) through which a controlled amount of air flows through a flow controller (18), so that the controller air is sprayed onto the cutting blade (5), which enables the cutting The sheet (5) moves forward in the transverse direction shortly after being ejected by the clamping member (6). Due to the air nozzles (17) a uniform pressure is established such that it fixes the cutting disc (5) in its position without deviating from its path. The upper stack (10) further comprises a first groove plate (10D) connected to the first support plate (10A) via a spacer (10E). The cross-section of the spacer (10E) may be rectangular or circular or have any shape such that it creates a gap between the first support plate (10A) and the first groove plate (10D). This gap is created to accommodate the transport member (7) as well as the clamping member (6).

Now, the lower surface (10A'') of the first support plate is connected with the first grooved plate (10D) via a plurality of spacers (10E). The first groove plate (10D) has an upper surface (10D') and a lower surface (10D''), which are the same surface with a collar track (21) around it. The first groove plate (10D) can be made of metal or non-metal, preferably high-grade plastic material. The main reason or preference for using high-grade plastic material is that the collar track (21) carved to a certain depth on the upper and lower surfaces (10D', 10D'') can be easily constructed and it provides the gripping member (6 ) moves smoothly, the clamping member (6) moves inside the groove path (19) and is supported on the collar track (21), as further shown in FIG. 7 . The depth of the collar track (21) is at least a quarter of the width of the upper or lower flange. The use of metal elements in the construction of the groove plate (10D) can create friction during movement of the clamping member (6) and can cause wear in the long run. But not necessarily, the material of choice could be metal with a high finish, stainless steel with a super finish or brass with copper impregnated for extra lubrication.

Figure 5 shows the conveying member (7) comprising a first set of pulleys (10C) connected to a sprocket (20) via a connecting flange (7C). The sprocket (20) has the same rotation speed as the rotation speed of the pulley (10C) driven by the first motor (12). All driven pulleys (10C) and sprockets (20) are synchronized at the same speed. An endless chain (7A) is provided, which is connected to the sprocket (20) to move in a predetermined path. Chains (7A) are mechanically driven elements which can be driven from roller chains, silent chains, leaf chains, flat top chains, engineered steel chains or any other type of chain that transfers objects from one place to another without any slippage The collection selection. As an example, if we consider a roller chain comprising an inner plate (roller chain plate), outer plate (pin chain plate), bushings, pins and rollers. The rollers are equally spaced between the links. A chain guide (7D), which may be a C-shaped or U-shaped channel, is provided such that it guides the chain (7A) between them to travel in a predetermined trajectory. The chain guide (7D) is preferably constructed of a material softer than steel or may be made of plastic so that any looseness in the chain (7A) will not create metal to metal friction. Furthermore, the upper clamping unit (6') is connected to the chain (7A) with the help of chain guide pins (22), as shown in Fig. 7 .

Figure 6 shows the structural features of the clamping member (6). The clamping member (6) comprises an upper clamping unit (6') and a lower clamping unit (6''). The upper clamping unit (6') consists of a carrier (6A) with a circular cross section. The carrier (6A) has upper and lower flanges (6B, 6C) protruding to the outside along the same cross-sectional path as that of the carrier (6A). The carrier (6A) is made light in construction so that it does not generate pressure on the collar track (21) during its movement and provides a less frictional operation. The carrier (6A) can be constructed by choosing a material such as high-grade plastic or metal or non-metal such as aluminium, brass or stainless steel or also using ordinary steel so that the weight of the carrier is minimized as possible. Therefore, to achieve lighter weight, multiple cuts are made to remove extra load material.

Furthermore, the carrier (6A) carries the guide pin (6D) in an elongated guide slot (6E). Slots (6E) facilitate up and down movement of guide pins (6D). The guide pin (6D) is attached to a clamping block (6G) via a first connecting shaft (6F) to form a single body. Making a single piece will eventually move the clamping block (6G) together with the guide pin (6D).

The guide slots (6E) may be coated with a layer of wear resistant material to provide a frictionless surface for moving the guide pins (6D) up and down. The guide pin ( 6D ) has a protrusion ( 61 ) outside the guide slot ( 6E ), which is guided in the groove path ( 19 ), as shown in FIG. 7 . Holes (6J) at the top of the carrier (6A) are provided to insert chain guide pins (22) inside.

The clamping member (6) further comprises a lower clamping unit (6'') with an identical carrier (6A). The lower clamping member (6'') is different from the upper clamping member (6') such that the clamping block (6G) is replaced by a clamping magnet (6H). The clamping magnet (6H) contacts the clamping block (6G), which is metal in construction, together with the cutting blade (5) and clamps the cutting blade (5) to deliver it to the desired location.

Another aspect of the present invention is that the head of the clamping unit (6', 6'') is rotatable, as shown in Figure 6A. A cross-sectional view of Figure 6 is shown in Figure 6A, where the clamping member (6) is shown. The shaded portion shown in Figure 6A forms a single unit and is rotatable about an axis as shown by the dashed line. The shaded part in the case of the upper clamping unit (6') includes the first connecting shaft (6F), the clamping block (6G) can rotate inside the carrier (6A), and the lower clamping unit (6' '), the shaded part includes a second connecting shaft (6F'), and the clamping magnet (6H) can rotate inside the carrier (6A). This rotation helps to transport the cutting disc (5) smoothly and gradually along the corner. The gripping member (6) does not restrain the cutting blade (5) from jamming when changing direction in a curved path when moving along a corner or when changing direction/path due to rotational movement.

In one embodiment as shown in Figure 6B, the upper and lower clamping units (6', 6'') can be constructed such that the protrusions (6I) are welded or bolted to the outer shell (6L), the outer shell The body (6L) is coupled with the first and second connecting shafts (6F and 6F') so as to be connected with the holding block (6G) or the holding magnet (6H). Furthermore, the holding unit has an inner case (6K) slidable inside the outer case (6L). The sliding movement is performed by the movement of the protrusion (6I) inside the curved groove path (19). The inner housing (6K) is driven by a chain (7A) connected via a pin arrangement or may be welded or screwed. The inner housing (6K) may be constructed of a material having low friction properties so that it can slide inside the outer housing (6L). These materials can be like high grade plastic with super finish, brass with impregnated copper. Super finish stainless steel, or any type of material that produces very little or no friction. In this type of configuration, the carrier (6A) does not have upper and lower flanges (6B, 6C), which minimizes frictional losses that occur during contact movement of the flange (6B) with the collar track (21 ) change.

Furthermore, the apparatus (8) has a unique construction arrangement or assembly of the gripping member (6) with the conveying member moving along the groove path (19), as shown in Figures 7 and 7A. Further from Figure 7, a chain (7A) driven by a sprocket (20) is coupled to the upper clamping member (6'). The connection of the chain (7A) to the carrier (6A) of the clamping member (6') is done via chain guide pins (22). As shown in Figure 7B, the tapered end of the chain guide pin (22) is inserted into the hole (6J) on the carrier (6A) and the second end is inserted into the chain (7A) to form a single body. Thus, the chain (7A) drives the upper clamping member (6') along the groove path (19), causing the upper flange (6B) to slide along the collar track (21).

Due to the non-uniform configuration of the groove path (19) as shown in Figure 8 and Figure 1, at position A the upper and lower clamping units (6', 6'') contact each other to create a zero gap Or no gap, while at position B the upper and lower clamping units (6', 6'') are separated by a distance to create a gap between the clamping block (6G) and the clamping magnet (6H). The gap-free condition is directly related to the position of the cutting disc (5) clamped by the clamping member (6), and in the gap-free condition, the cutting disc (5) is released to a predetermined position. The upper clamping unit (6') with a clamping block (6G) comprises housed inside it a spring (23) which provides a cushioning effect during the clamping of the cutting disc (5).

The constructional features of the lower stack (11) are not well defined as they can be related to the upper stack (10) which has a similar construction. But the second groove plate (11B) is only a mirror image of the first groove plate (10D), so that due to the relative movement of the upper and lower clamping units (6', 6'') that occurs, the groove path ( 19) have different profiles.

Therefore, the inventive device (8) comprises the following: a) Cutting sheet (5), which is formed by cutting a continuous fabric (9) by a cutting device (1). b) A longitudinal conveying device (2), which conveys the cut pieces (5) in the longitudinal direction. c) Clamping member (6), which rotates around the transport member (7) to reach position A and clamps the cutting disc (5). d) Traversing the conveyor (3), which conveys the cutting disc (5) in oblique direction to transverse direction for release at position B. e) Transverse conveying device (4), which further conveys the cut sheet (5) in the transverse direction.

The method for conveying tubular bags from longitudinal to transverse direction in a smooth, gradual, synchronized and continuous manner involves the following steps: a) A continuous fabric (9) is cut by a cutting device (1) to form a cutting piece (5). b) Transport the cut sheet (5) in the longitudinal direction by means of the longitudinal transport device (2). c) The clamping member (6) rotates around the transport member (7) and reaches position A. d) The upper clamping member (6') and the lower clamping member (6'') with the cutting blade between them are in contact with each other. e) Clamp the cutting piece (5) at position A. f) Due to the movement of the chain (7A) placed in an oblique manner, the cutting discs (5) are now transported in an oblique direction by means of the traversing transport device (3). g) The cutting disc (5) is gripped by the gripping member (6) and travels over the conveying member (7), transported in the transverse direction to the upper and lower gripping units (6', 6'') far apart position B. h) The cut sheet (5) is then transported in the transverse direction by means of the transverse transport device (4).

Thus, it is apparent that the present invention has numerous embodiments.

In its preferred embodiment, the invention discloses a device (8) for gradually changing the direction of transport of a cut sheet (5) of a tubular bag. The device is characterized in that it includes: - a longitudinal transport device (2), a transverse transport device (3), and a transverse transport device (4) located after the transverse transport device (3) for transporting cut pieces (5) from the longitudinal direction to the transverse direction , wherein the device (8) is installed on the crossing conveyance device (3); - an upper stack (10) and a lower stack (11), wherein the upper stack (10) is connected at one end to a cylinder (13) and is rotatable at the other end around a swivel connection (16), and wherein the the cylinder (13) is connected to a hinge (15) mounted at the first support plate (10A), and wherein the lower stack (10) is a mirror image of the upper stack (11), - At least one conveying member (7) and at least one clamping member (6), wherein each conveying member (7) is capable of carrying a cutting piece (5) to gradually change the moving direction of the cutting piece (5), wherein the conveying member (7 ) in the form of a structurally identical chain (7A) for both the upper stack (10) and the lower stack (11), respectively mounted on the lower surface (10A'') of the first support plate (10A) and a On the upper surface (11A') of the second support plate (11A), wherein the first support plate (10A) supports the upper stack (10) and the second support plate (11A) supports the lower stack (11), and wherein the The component (6) includes an upper clamping unit (6') and a lower clamping unit (6''), - The first set of pulleys (10C), which are placed one by one staggered on the upper surface (10A') of the first support plate, the pulleys (10C) are passed through a connecting flange (7C) through a The set of sprockets (20) is attached to the upper surface (10A'); the first set of idler wheels (10F) is mounted on this upper surface (10A') in the same manner as the pulley (10C) and is placed staggered Between the first set of pulleys (10C), - A first belt (10B) that rolls over the pulley (10C) and idler pulley (10F) to provide synchronous drive to each pulley of the first set of pulleys (10C) and idler pulley (10F) - a first motor (12) mounted on the upper surface (10A') via a motor flange (12A) and connected to pulleys (10C and 10F) and belts via a connecting shaft (12B) such that the first The rotation of a motor (12) provides equal rotation to the first set of pulleys (10C), - a plurality of connecting flanges (7C), which are mounted on the upper surface (10A’), connected to one of the sprockets (20) through which the conveying member (7) passes, - A plurality of air nozzles (17) through which a controlled amount of air flows through a flow controller (18), so that the controlled air is sprayed onto the cutting blade (5), which makes the cutting blade (5) The clamping member (6) moves forward in the transverse direction shortly after being ejected, - a first grooved plate (10D), which is arranged on the upper stack (10) and connected to the first support plate (10A) via a spacer (10E) to connect the first support plate (10A) to the first support plate (10A) A gap is created between the grooved plates (10D) in which the conveying member (7) and the clamping member (6) are accommodated, wherein the first grooved plate (10D) has a collar rail (21) as the surrounding the upper surface (10D') and the lower surface (10D'') of the same surface, - Set a chain guide (7D) in a C-shaped or U-shaped channel to guide the chain (7A) between them to make it travel in a predetermined track, and wherein the clamping members (6) The tie is connected to the ring chain (7A) with a chain guide pin (22).

In one embodiment of the device of the preferred embodiment, the connection of the hinge (15) to the first support plate (10A) is obtained by bolting, screwing or welding.

In another embodiment, all driven pulleys (10C) and sprockets (20) are synchronized at the same speed.

In another embodiment of the device, the spacer ( 10E) has a rectangular or circular cross-section.

In yet another embodiment, the first groove plate (10D) is made of metal or non-metal, preferably high-grade plastic material.

In yet another embodiment, the depth of the collar track (21) is at least a quarter of the width of the upper or lower flange (10, 11).

In another embodiment, the amount of air injected through the nozzle (17) is controlled by a flow controller (18).

In yet a further embodiment, the clamping member (6) includes an upper clamping unit (6') and a lower clamping unit (6''), wherein the upper clamping unit (6') is circular in cross-section and protrudes to The outer carrier (6A) is formed and follows the same cross-sectional path as the carrier (6A), and wherein the carrier (6A) has a protruding to the outside along the same cross-sectional path as the carrier (6A). Section path upper and lower flanges (6B, 6C).

In yet a further embodiment, the carrier (6A) is made of high-grade plastic or metal or non-metal such as aluminum, brass or stainless steel or steel.

In another embodiment, the carrier (6A) has a guide pin (6D) in a guide slot (6E), the guide slot (6E) facilitates the up and down movement of the guide pin (6D), the guide pin (6D) is attached to a clamping block (6G) via a connecting shaft (6F) to form a single body, thereby allowing the clamping block (6G) to move together with the guide pin (6D).

In yet another embodiment, the guide slot (6E) is coated with a layer of wear resistant material to provide a frictionless surface for the movement of the guide pin (6D).

In yet another embodiment, the guide pin (6D) has a protrusion (6I) outside the guide slot (6E), the protrusion (6I) is disposed on the lower surface of the first support plate (10A) (10A") is guided in a groove path (19) on the bottom side.

In another embodiment, a hole (6J) for inserting the chain guide pin (22) inside is provided at the top of the carrier body (6A).

In yet a further embodiment, the lower clamping member (6'') has a clamping magnet (6H) instead of the clamping block (6G).

In yet a further embodiment, the head of the clamping unit (6', 6'') is rotatable.

In another embodiment, the upper clamping unit (6') has a first connecting shaft (6F) arranged on the clamping block (6G), by which the clamping block (6G) can be positioned on the carrier ( 6A) Internal rotation.

In yet another embodiment, the lower clamping unit (6'') has a second connecting shaft (6F'), the clamping magnet (6H) is attached to the second connecting shaft (6F') and by It is rotatable inside the carrier (6A).

In yet another embodiment, the groove path (19) has an uneven profile whereby during movement of the endless chain (7A) the upper clamping unit (6') is pulled upwards and the lower clamping unit (6' '') is pulled downwards to create a gap between the clamping block (6G) and the clamping magnet (6H), which closes as the cutting blade (5) travels in the transverse direction.

In one embodiment, the clamping member (6) comprises an upper clamping unit (6') and a lower clamping unit (6''), each consisting of an outer shell (6L), driven by a chain (7A). An inner housing (6K) can be slid into the outer housing (6L), and wherein the protrusion (6I) is welded or bolted to the outer housing (6L), further wherein the outer housing (6L) is connected to the first and second The shafts (6F and 6F') are coupled to connect with the holding block (6G) or the holding magnet (6H).

In another embodiment, the inner housing (6K) is constructed of high-grade plastic, brass or stainless steel with impregnated copper, or a low coefficient of friction material.

In another preferred embodiment, the present invention discloses a method for gradually changing the conveying direction of a cut sheet (5) of a tubular bag using the apparatus disclosed in the preceding embodiments. The aspect that characterizes the method is that it has the following steps: a The cut sheet (5) is conveyed in the longitudinal direction by the longitudinal conveying device (2), b rotate the clamping member (6) around the transport member (7) and bring it to position A, c bringing the upper and lower clamping members (6', 6) together with the cutting blade (5) between them into contact with each other and thereby clamping the cutting blade (5) to the upper and lower clamping members (6, 6' ) at position A. d Conveying the clamped cut-off piece (5) by traversing the transport device (3) using the movement of the chain (7A) in a direction oblique to the longitudinal direction, whereby the clamped cut-off piece (5) is transported to the transverse direction to position B where the upper and lower clamping units (6', 6'') move apart from each other releasing the cutting disc (5) from their clamping, e The cut sheet (5) is transported in the transverse direction by means of the transverse transport device (4).

In one embodiment of the preferred method, at the end of step f, a controlled amount of air is flowed out of the air nozzle (17) by means of a flow controller (18), so that the released cutting sheet is on the clamped member (6 ) moves forward in the lateral direction shortly after being thrown.

Although the above description contains many specificities, these should not be construed as limiting the scope of the present invention, but as an illustration of one of the preferred embodiments of the present invention. It must be realized that modifications and variations are possible based on the disclosure given above without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be determined not by the illustrated embodiments, but by the accompanying claims and their legal equivalents.

1: Cutting device 2: Longitudinal transport device 2A: First Conveyor 2B: The first conveyor belt 3: Crossing the transport device 4: Horizontal transport device 4A: Second Conveyor 4B: Second conveyor belt 5: Cutting pieces or bags 6: clamping member 6': Upper clamping unit 6'': Lower clamping unit 6A: Carrier 6B: Upper flange 6C: Lower flange 6D: guide pin 6E: Guide slot 6F: the first connecting shaft 6F': the second connecting shaft 6G: clamping block 6H: clamping magnet 6I: protrusion 6J: hole 6K: Inner shell 6L: Outer shell 7: Shipping components 7A: chain 7B: Gear drive 7C: Connection flange 7D: Chain guide 8: equipment of the present invention 9: Continuous fabric 10: upper layer 10A: The first support plate 10A': the upper surface of the first support plate 10A'': the lower surface of the first support plate 10B: First belt 10C: The first set of pulleys 10D: First Groove Plate 10D': the upper surface of the first groove plate 10D'': the lower surface of the first groove plate 10E: spacer 10F: The first set of idlers 11: Bottom cascading 11A: Second support plate 11A': the upper surface of the second support plate 11A'': the lower surface of the second support plate 11B: second groove plate 11B': the upper surface of the second groove plate 11B'': the lower surface of the second groove plate 12: First motor 12A: Motor flange 12B: connecting shaft 13: Cylinder 14: connecting rod 15: hinge 16: Rotary connector 17: Air nozzle 18: Flow controller 19: groove path 20: Sprocket 21: Collar track 22:Chain guide pin 23: Spring

Fig. 1 shows a schematic diagram of the movement of the equipment/device position and cutting disc of the present invention Figure 2 shows a perspective view of the apparatus of the present invention Figure 3 shows a perspective view of the top of the upper stack Figure 4 shows a perspective view of the bottom of the upper stack Figure 5 shows a transport component Figure 6 shows a clamping member Figure 6A shows a cross-sectional view of the clamping member as shown in Figure 6 Figure 6B shows an embodiment of a clamping member Figure 7 shows the installation of the upper clamping member and its movement in different clamping positions Figure 7A shows the movement of the clamping member inside the groove path and over the collar track Figure 7B shows the pin arrangement inside the chain and clamping member Figure 8 shows a cross-sectional view of the clamping member and its movement during the transport of the cut sheet Figure 9 shows the air nozzle system pushing the cutting disc as indicated by the arrow

6: clamping member

8: equipment of the present invention

10: upper layer

10A: The first support plate

11: Bottom cascading

11A': the upper surface of the second support plate

11B: second groove plate

12: First motor

13: Cylinder

15: hinge

16: Rotary connector

Claims (23)

A device (8) for conveying tubular bags on a bag-making production line and gradually changing the conveying direction of a cutting sheet (5) of a tubular bag, characterized in that the device (8) comprises: a longitudinal conveying device (2), a transverse conveying device (3), and a transverse conveying device (4) positioned behind the traverse conveying device (3) for conveying cut pieces (5) from the longitudinal direction to the transverse direction, Wherein the equipment (8) is installed on the crossing conveying device (3); an upper stack (10) and a lower stack (11), wherein the upper stack (10) is connected at one end to a cylinder (13) and is rotatable at the other end around a swivel connection (16), and wherein the cylinder (13) is connected to a hinge (15) mounted at the first support plate (10A), wherein the lower stack (10) is a mirror image of the upper stack (11), at least one conveying member (7) and at least one clamping member (6), wherein each conveying member (7) is capable of carrying the cutting sheet (5) to gradually change the moving direction of the cutting sheet (5), wherein the conveying member (7) In the form of a ring chain (7A) identical in structure to both the upper stack (10) and the lower stack (11), respectively installed on the lower surface (10A'') of the first support plate (10A) and on the upper surface (11A') of a second support plate (11A), wherein the first support plate (10A) supports the upper stack (10) and the second support plate (11A) supports the lower stack (11) , and wherein the clamping member (6) comprises an upper clamping unit (6') and a lower clamping unit (6''), The first set of pulleys (10C), which are placed one by one staggered on the upper surface (10A') of the first support plate, these pulleys (10C) are passed through a connecting flange (7C) The set of sprockets (20) is attached to the upper surface (10A'); the first set of idler wheels (10F) is mounted on this upper surface (10A') in the same manner as the pulley (10C) and is placed staggered Between the first set of pulleys (10C), A first belt (10B) rolling over the pulleys (10C) and idler pulleys (10F) to provide a synchronous drive to each pulley of the first set of pulleys (10C) and the idler pulleys (10F) a first motor (12) mounted on the upper surface (10A') via a motor flange (12A) and connected to the pulleys (10C and 10F) and the belt via a connecting shaft (12B), such that the rotation of the first motor (12) provides equal rotation to the first set of pulleys (10C), a plurality of connecting flanges (7C), which are mounted on the upper surface (10A'), connected to a sprocket (20) through which the conveying member (7) passes, There are a plurality of air nozzles (17) so that controlled air is sprayed onto the cutting blade (5), which causes the cutting blade (5) to move in the transverse direction shortly after being thrown out by the holding members (6). move forward, A first groove plate (10D), which is arranged on the upper stack (10) and connected to the first support plate (10A) via a spacer (10E) so as to connect the first support plate (10A) to the A gap is generated between the first grooved plates (10D), and the conveying members (7) and the clamping members (6) are accommodated in the gap, wherein the first grooved plate (10D) has as a surrounding an upper surface (10D') and a lower surface (10D'') of the same surface of a collar track (21), A chain guide (7D) in a C-shaped or U-shaped channel is provided to guide the endless chain (7A) so that it travels in a predetermined track, and wherein the endless chain (7A) is tied with a chain guide pin (22) is connected to the clamping member (6). The device according to claim 1, wherein the connection of the hinge (15) and the first support plate (10A) can be obtained by bolting, screwing or welding. The device of claim 1 or 2, wherein all driven pulleys (10C) and the plurality of sprockets (20) are synchronized at the same speed. The device according to claim 1 or 2, wherein the cross-section of the spacers (10E) can be rectangular or circular. The device according to claim 1 or 2, wherein the first groove plate (10D) is metal or non-metal, preferably high-grade plastic material. Device according to claim 1 or 2, wherein the depth of the collar track (21) is at least a quarter of the width of the upper or lower flanges (10, 11). The apparatus of claim 1 or 2, wherein the amount of air sprayed through the nozzle (17) is controlled by a flow controller (18). The device as claimed in claim 1 or 2, wherein the clamping member (6) includes an upper clamping unit (6') and a lower clamping unit (6''), wherein the upper clamping unit (6') is defined by a section A carrier (6A) that is circular and protrudes to the outside and follows the same cross-sectional path as that of the carrier (6A), wherein the carrier (6A) has a protruding to the outside and also along the same cross-sectional path as the carrier (6A) The upper flange and the lower flange (6B, 6C) of the same cross-sectional path as the cross-sectional path of (6A). The device as in claim 8, wherein the carrier (6A) is made of high-grade plastic or metal or non-metal, such as aluminum, brass or stainless steel or steel. The device of claim 8, wherein the carrier (6A) has a guide pin (6D) in a guide slot (6E), the guide slot (6E) promotes the guide pin (6D) up and down movement, the guide pin (6D) is attached to a clamping block (6G) via a connecting shaft (6F) to form a single body, thereby allowing the clamping block (6G) together with the guide pin (6D) move. The apparatus of claim 10, wherein the guide slot (6E) is suitably coated with a layer of wear-resistant material to provide a friction-free surface for the movement of the guide pin (6D). The device as claimed in claim 10, wherein the guide pin (6D) has a protrusion (6I) outside the guide slot (6E), and the protrusion (6I) is disposed on the first support plate (10A) ) is guided in a groove path (19) on the bottom side of the lower surface (10A"). The device according to claim 8, wherein a hole (6J) for inserting the chain guide pin (22) inside is provided at the top of the carrier (6A). The device as claimed in claim 8, wherein the lower clamping member (6'') has a clamping magnet (6H) to replace the clamping block (6G). As the device of claim 8, wherein the heads of the clamping units (6', 6'') are rotatable. As the equipment of claim 8, wherein the upper clamping unit (6') has a first connecting shaft (6F) arranged on the clamping block (6G), the clamping block (6G) is connected by its Rotatable inside the carrier (6A). The device as in claim 8, wherein the lower clamping unit (6'') has a second connecting shaft (6F'), the clamping magnet (6H) is attached to the second connecting shaft (6F' ) and by means of which can be rotated inside the carrier (6A). The device as claimed in claim 14, wherein the groove path (19) has an uneven profile, whereby during the movement of the endless chain (7A), the upper clamping unit (6') is pulled upward and the lower clamp The clamping unit (6'') is pulled down to create a gap between the clamping block (6G) and the clamping magnet (6H), which gap travels in the transverse direction of the cutting blade (5) when closed. As the equipment of claim 1 or 2, wherein the clamping member (6) includes an upper clamping unit (6') and a lower clamping unit (6'') each consisting of an outer shell (6L), the chain (7A) One inner shell (6K) driven can slide into the outer shell (6L), wherein the protrusion (6I) is welded or bolted to the outer shell (6L), and the outer shell (6L) ) is coupled with the first and second connecting shafts (6F and 6F'), and then connected with the clamping block (6G) or the clamping magnet (6H). The device as in claim 19, wherein the inner casing (6K) is made of high-grade plastic, brass or stainless steel with impregnated copper, or low friction coefficient material. A method for gradually changing the delivery direction of a cutting piece (5) of a tubular bag using any one of the equipment in claims 1 to 18, characterized in that the method consists of the following steps: a. transporting the cut sheet (5) in the longitudinal direction by means of the longitudinal transport device (2), b. Rotate the clamping member (6) around the transport member (7) and bring it to position A, c. bringing the upper and lower clamping members (6', 6) together with the cutting blade (5) between them into contact with each other and thereby clamping the cutting blade (5) in the upper and lower clamping Between the components (6', 6) at this position A. d. By traversing the conveying device (3), the movement of the chain (7A) is used to transport the clamped cut sheet (5) in a direction oblique to the longitudinal direction, whereby the clamped cut piece the sheet (5) is transported in transverse direction to position B where the upper and lower clamping units (6', 6'') move apart from each other releasing the cut sheet (5) from their clamping, e. The cut sheet (5) is transported in the transverse direction by means of the transverse transport device (4) for further processing in a bag making line. The method of claim 21, wherein at the end of step f, a controlled amount of air is flowed out of the air nozzle (17) by a flow controller (18), so that the released cutting sheet is pressed by the clamping members ( 6) Move forward in the lateral direction shortly after being thrown. A bag making machine with a device (8) for transporting tubular bags and gradually changing the direction of transport of a cut piece (5) of a tubular bag.

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