JP2023102314A - Vertical type packing machine - Google Patents

Abstract

To provide a vertical type bag-making and packing machine that can reduce space to be occupied.SOLUTION: A vertical type packing machine 1 of this invention includes a packing part 10 which makes bags and pack bag-like packages containing to-be-packed objects T, and a base 60 for rotatably supporting the packing part 10. The packing part 10 of the invention receives to-be-packed objects T at a first position P1, and packs the to-be-packed objects T at a second position P2, which has a larger angle with respect to a horizontal direction H than the first position P1. The packing part 10 may include a former mechanism 20 for forming a sheet-like film into a tubular shape, and an introduction mechanism 40 for receiving the to-be-packed objects T from the upstream US and transferring the to-be-packed objects T to the former mechanism 20 located at the downstream DS.SELECTED DRAWING: Figure 4

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical packaging machine that manufactures a bag by inserting an object to be packaged into a continuously supplied cylindrical packaging body and then making a bag.

2. Description of the Related Art Conventionally, as a bag-making and packaging machine for packaging an object to be packaged in a bag while making a bag, a vertical packaging machine has been used in which the packaging material is fed and the object to be packaged is supplied in the vertical direction, for example, downward in the vertical direction. As an example, a vertical packaging machine performs a bag-making step of forming a cylindrical package with an upper opening from a sheet-like packaging material, and a packaging step of packing the item by putting the item to be packaged into the cylindrical package through the opening and then sealing and closing the opening. In the bag-making step, the sheet-like packaging material fed in the vertical direction is guided along the outer peripheral surface of the bag-making tube to seal the seams of the tubular packaging material and also to seal the bottom of the bag to form a cylindrical package. In the packaging step, in addition to the items to be packaged being put into the bag-making tube as a passageway, the items are separated and packaged at the portion where the opening is sealed. By repeating the above bag-making step and packaging step, a plurality of bag-packaged products are continuously manufactured.

Among vertical packaging machines, there is a vertical packaging machine that performs a bag-making step and a packaging step by tilting a bag-making tube from the vertical direction, as disclosed in Patent Document 1, for example. In this tiltable vertical packaging machine, the items to be packaged slide down while being guided by the inclined inner peripheral surface of the bag-making tube that is inclined at a predetermined angle, so that the items to be packaged are thrown into the cylindrical packaging body. Therefore, in this type of vertical packaging machine, compared to a vertical packaging machine in which the bag-making cylinder extends in the vertical direction, the object to be packaged descends at a lower speed, and the impact when the object is thrown into the cylindrical package is small, so that the object to be packaged can be prevented from being damaged. Conventional tiltable vertical packaging machines including Patent Document 1 perform bag-making and packaging steps with a fixed tilt angle.

JP 2014-234165 A

In a conventional bag-making machine in which a bag-making cylinder is tilted from the vertical direction, a conveying means for lifting the object to be packaged up to the inlet of the bag-making cylinder is required, and this conveying means increases the occupied space of the production line including the bag-making and packaging machine.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a vertical form-fill-seal machine capable of reducing the occupied space.

The vertical packaging machine of the present invention includes a packaging unit that forms and packages a bag-like package containing an object to be packaged, and a base that rotatably supports the packaging unit.
The packaging unit in the present invention receives the item to be packaged at the first position,
The item to be packaged is packaged at a second position having a larger angle with respect to the horizontal direction than at the first position.

In the vertical packaging machine of the present invention, the packaging unit includes a former mechanism that forms a sheet-like film into a tubular shape, and an introduction mechanism that receives an item to be packaged from upstream and transfers the item to the former mechanism located downstream. Then, preferably, the conveying direction and the passing direction intersect so that θ1 < θ2, where θ1 is the angle of the conveying direction of the article to the horizontal direction in the introduction mechanism, and θ2 is the angle of the passing direction of the article to the horizontal direction in the former mechanism.

In the vertical packaging machine of the present invention, the conveying direction is preferably parallel to the horizontal direction when the packaging section is at the first position.

In the vertical packaging machine of the present invention, it is preferable that the introduction mechanism includes a conveyor for conveying the articles to be packaged received from upstream toward the former mechanism.

In the vertical packaging machine of the present invention, the angle .theta.1 is fixed at the first position, but the angle .theta.2 is preferably selected at the second position in accordance with the items to be packaged.

In the vertical packaging machine of the present invention, it is preferable that the gantry be positioned downstream, opposite to the upstream side for receiving the packaged articles.

According to the present invention, the item to be packaged is received at the first position, and the item to be packaged is packaged at the second position at a larger angle to the horizontal than at the first position. By adopting this configuration, it is possible to reduce the space occupied by the vertical bag making and packaging machine, and it is also advantageous in preventing damage to the items to be packaged.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows schematic structure of the vertical packaging machine which concerns on embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows schematic structure of the vertical packaging machine which concerns on embodiment. FIG. 4 is a side view showing the schematic configuration of the vertical packaging machine according to the embodiment, and showing the operation of the former unit. It is a figure which shows rotation operation|movement of the packaging part in the vertical packaging machine which concerns on embodiment. FIG. 4 is a side view showing the process of the packaging operation of the vertical packaging machine according to the embodiment, where (a) shows when the carry-in path receives the package, and (b) shows when the received package is conveyed to the package. FIG. 4 is a side view showing the process of the packaging operation of the vertical packaging machine according to the embodiment, following FIG. FIG. 6 is a side view showing the process of the packaging operation of the vertical packaging machine according to the embodiment subsequent to FIG. 5 , and is a diagram showing when the carry-in path receives the next package. It is a figure for demonstrating the effect of the vertical packaging machine which concerns on embodiment. It is another figure for demonstrating the effect of the vertical packaging machine which concerns on embodiment. It is another figure for demonstrating the effect of the vertical packaging machine which concerns on embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, the vertical packaging machine 1 according to the present embodiment includes a packaging unit 10 that forms a bag-like package into which an object to be packaged T (not shown) is placed and packages the object, a base 60 that supports the packaging unit 10 so that it can be rotated clockwise and counterclockwise, that is, rotatably, and an electrical housing 70 that houses a control unit 71 that controls the operation of the vertical packaging machine 1. The packaging unit 10 receives the items to be packaged T at the first position P1 shown in FIG. Moreover, the packaging unit 10 packages the object to be packaged T at a second position P2, which is inclined at a larger angle with respect to the horizontal direction H than at the first position P1 shown in FIG. When the vertical packaging machine 1 packs the object T to be packaged at the second position P2, the packaging unit 10 returns to the first position P1 to receive the next object T to be packaged, and then repeats the operation of packaging the object T at the second position P2 and returning to the first position P1 to receive the object T, thereby packaging the object T. The configuration and operation of the vertical packaging machine 1 will be described below in order.

[Configuration of vertical packaging machine 1: FIGS. 1 to 4]
Hereinafter, the configuration of the vertical packaging machine 1 will be described in order of the packaging unit 10, the stand 60, and the electrical housing 70 with reference to FIGS. 1, 2, 3 and 4. FIG. In the following description, the front-rear direction X, width direction Y and height direction Z are defined as shown in FIGS. 1 and 2, and upstream US and downstream DS are defined as shown in FIG. The upstream US and downstream DS are determined based on the direction in which the item to be packaged T is conveyed. Moreover, the horizontal direction H is synonymous with the front-rear direction X. As shown in FIG.

[Packaging section 10]
The packaging unit 10 includes a former mechanism 20 that constitutes the main body of the packaging unit 10 and an introduction mechanism 40 that receives the article to be packaged T from the upstream US and transfers the article to be packaged T to the former mechanism 20 . The packaging unit 10 also includes a support frame 50 that holds the former mechanism 20 and the introduction mechanism 40 and is rotatably supported with respect to the base 60 .

[Former mechanism 20: FIGS. 1, 2, and 3]
As shown in FIGS. 1, 2, and 3, the former mechanism 20 includes a former 21 that forms the transported sheet-like film SF into a tubular film package TF, and a bag-making cylinder 23 that supports the former 21 and transports the loaded articles T by dropping them through an internal passage. In addition, the former mechanism 20 includes a hopper 25 that is provided at the upper end of the bag-making cylinder 23 and receives the articles to be packaged T from the introduction mechanism 40 . Further, the former mechanism 20 includes a film supply section 27 that holds the sheet-like film SF and supplies the sheet-like film SF to the former 21, as shown in FIG.
1 and 2 show only a part of the former mechanism 20, and the parts not shown in FIGS. 1 and 3 are shown in FIG.

The former 21 bends the sheet film SF conveyed from the film supply unit 27 so that the left edge and the right edge of the sheet film SF overlap to form a cylindrical film package TF. The former 21 is, for example, formed into a predetermined shape by bending a metal plate, or integrally formed by injection molding a resin material. The same applies to the hopper 25 and the bag-making tube 23 .
The former 21 is arranged so as to surround the bag-making tube 23 in the circumferential direction, and the tubular film package TF formed by the former 21 is guided so as to wrap around the outer peripheral surface of the bag-making tube 23 below the former 21, and is conveyed downward while being wrapped around the bag-making tube 23.

The bag-making tube 23 is a cylindrical member that is open at both (upper and lower) ends in the axial direction. The bag-making tube 23 receives the articles to be packaged T transferred via the hopper 25 from the opening at the upper end thereof and passes downward through the passage 24 . After passing through the passage 24 of the bag-making tube 23 , the items to be packaged T are thrown into the cylindrical film package TF through the opening at the bottom of the bag-making tube 23 . As an example, the bag-making tube 23 in the present embodiment has an opening diameter that is equal in the axial direction, but the present invention is not limited to this, and the opening diameter may be set to vary in the axial direction.
The hopper 25 is provided at the upper end (tip) of the bag-making tube 23, and is formed so that the opening diameter increases toward the tip.

As shown in FIG. 3, the film supply unit 27 holds a film roll FR around which a sheet-like sheet film SF is wound. By operating a conveying belt 31, which will be described later, the sheet-like film SF is fed out from the film roll FR, guided by a plurality of rollers 29, and conveyed through the former 21 to the bag-making tube 23.

The film supplying section 27 includes a conveying belt 31 , a vertical sealing machine 33 and a horizontal sealing machine 35 around the bag making tube 23 . The sheet film SF pulled out from the film roll FR is transported by the transport belt 31 . When the sheet-like film SF is guided by a plurality of rollers 29 and conveyed to the former 21, the sheet-like film SF is formed into a tubular shape and becomes a tubular film package TF. The tubular film package TF is conveyed downward by a conveying belt 31, and the overlapping portions of both circumferential edges of the tubular film package TF are vertically sealed by a vertical sealer 33 below the former 21 and facing the bag-making tube 23. The tubular film package TF sealed in the vertical direction by the vertical sealing machine 33 is further conveyed downward by the conveyor belt 31, and is sealed in the horizontal direction perpendicular to the conveying direction of the tubular film package TF by the horizontal sealing machine 35 arranged below the vertical sealing machine 33. Further, in the horizontal sealing machine 35, the laterally sealed portion of the tubular film package TF is cut in the horizontal direction at the central portion of the tubular film package TF in the conveying direction, and the upper and lower ends of the tubular package PB are sealed to form a bag. Before the horizontal sealing machine 35 seals the tubular film package TF, the object to be packaged T is supplied through the passage 24 of the bag-making tube 23 of the former mechanism 20 into the tubular film package TF that will be the package PB. As a result, in the vertical packaging machine 1, a package PB in which the object to be packaged T is housed is produced.

The vertical packaging machine 1 has a pair of conveyor belts 31 (FIGS. 2 and 3). A pair of transport belts 31 are arranged on the left and right sides of the tubular film package TF, respectively. The transport belt 31 transports the sheet-like film SF pulled out from the film roll FR to the former 21 . Further, the transport belt 31 transports the tubular film package TF formed by the former 21 to the horizontal sealing machine 35 . The conveying belt 31 is composed of, for example, an endless belt, a driving roller and a driven roller.

Before the vertical packaging machine 1 is operated, the conveyor belt 31 is arranged with a minute gap between it and the bag-making tube 23 . When the vertical packaging machine 1 is operated, the pair of conveyor belts 31 sandwich the bag-making cylinder 23 from the outside in the width direction Y. As shown in FIG. When the conveying belt 31 is driven in this state, the endless belt conveys the tubular film package TF downward while pressing the tubular film package TF.

As an example, the vertical sealing machine 33 has a heater (not shown), a heater block that contacts the overlapped portion of the tubular film package TF, and a drive mechanism that drives the heater block. The vertical sealing machine 33 presses the overlapped portion of the tubular film package TF against the bag-making tube 23 with a predetermined pressure using a heated heater block, thereby heat-sealing the overlapped portion of the tubular film package TF in the vertical direction.

The horizontal sealing machine 35 has a function of sealing and cutting the tubular film package TF after vertical sealing by the vertical sealing machine 33 in the width direction Y intersecting the conveying direction of the tubular film package TF.

[Introduction mechanism 40: FIGS. 1, 2, and 4]
The introduction mechanism 40 receives the items to be packaged T from the upstream US and delivers them to the former mechanism 20 located downstream DS.
As shown in FIGS. 1, 2 and 4, the introduction mechanism 40 includes an endless conveyor belt 41, a driving roller 43 supporting one end of the conveyor belt 41, and a driven roller 45 supporting the other end of the conveyor belt 41. The introduction mechanism 40 is supported on the support frame 50 by support columns 47 .

The introduction mechanism 40 receives the object to be packaged T with a conveyor belt 41, and conveys the object to be packaged T toward the former mechanism 20 by causing the conveyor belt 41 to travel by rotationally driving the driving roller 43 and delivers it to the hopper 25 of the former mechanism 20. - 特許庁The direction in which the conveying direction D41 travels is indicated by arrows in FIGS. 1 and 4 (bottom view). The conveyor belt 41 can run continuously or intermittently when the packages PB are continuously produced.

The introduction mechanism 40 is provided so that the conveying direction D41 of the items to be packaged T on the conveyor belt 41 intersects the conveying direction D23 of the items to be packaged T on the bag-making tube 23 . That is, the angle of the conveying direction D41 of the article to be packaged T in the introduction mechanism 40 with respect to the horizontal direction H is θ1, and the angle of the conveying direction D23 of the article to be packaged T in the former mechanism 20 with respect to the horizontal direction H is θ2. Then, the transport direction D41 and the transport direction D23 intersect at an angle θ3 such that θ1<θ2. The action and effect of intersecting the conveyor belt 41 of the introduction mechanism 40 and the bag-making tube 23 of the former mechanism 20 in this manner will be described later.

[Supporting frame 50: FIGS. 1, 2, and 4]
The support frame 50 supports the packaging unit 10 (the former mechanism 20 and the introduction mechanism 40), and is rotatably supported with respect to the base 60 as shown in FIG. That is, the support frame 50 rotatably supports the former mechanism 20 and the introduction mechanism 40 between the first position P1 shown in FIG. 5(a) and the second position P2 shown in FIG. 6(a). The introduction mechanism 40 receives the package T at the first position P1 along the horizontal direction H, and the former mechanism 20 packages the package T at the second position P2 at a large angle with respect to the horizontal direction H.

1 and 2, the support frame 50 includes a support beam 51 that supports the former mechanism 20 and the introduction mechanism 40, and a frame 53 in which the support beam 51 protrudes toward the upstream US and is rotatably supported by the pedestal 60. The frame 53 includes a pair of support plates 54 provided on both sides in the width direction Y, and a connection plate 55 connecting downstream sides of the pair of support plates 54 . A support shaft 56 extending outward in the width direction Y is fixed to each of the pair of support plates 54 , and the support shaft 56 passes through a support plate 63 to be described later and is supported by bearings 57 . An electric motor 58 is attached to one of the support shafts 56, and the former mechanism 20 and the introduction mechanism 40 can rotate by rotating the electric motor 58 clockwise or counterclockwise. A notch 59 is formed below the downstream DS side of the frame 53 .

[Frame 60: FIGS. 1 and 2]
In addition to supporting the support frame 50 in a rotatable manner, the mount 60 has a function of moving in the horizontal direction H to a required position.
The frame 60 includes a flat base 61 and a pair of support plates 63 rising from the base 61 in the height direction Z, as shown in FIGS. Casters 65 are provided at the four corners of the lower surface of the base 61 so that the vertical packaging machine 1 can be moved to a required position. Although the support plate 63 is formed with a U-shaped notch when viewed from the side, this is merely an example.

The support shafts 56 of the support frame 50 pass through both of the pair of support plates 63 , and are supported by bearings 57 on the outer side surfaces in the width direction Y of the respective support plates 63 . A support shaft 56 passing through one bearing 57 is connected to a drive shaft (not shown) of an electric motor 58 supported by one support plate 63 .

An unloading conveyor 67 driven by an electric motor 68 is provided on the base 61 . The unloading conveyor 67 conveys the package PB produced by the former mechanism 20 toward the downstream DS.

The pedestal 60 is positioned on the downstream side DS opposite to the upstream side US receiving the package T, and the action and effect of this position will be described later.

[Electrical housing 70: FIGS. 1 and 2]
The electrical equipment housing 70 accommodates the control unit 71 and other electrical equipment.
As shown in FIGS. 1 and 2, the electrical equipment housing 70 is provided outside the one support plate 63 in the width direction Y. As shown in FIGS. The control unit 71 is arranged inside the electrical housing 70 and controls the operation of the vertical packaging machine 1, specifically the rotation and stoppage of the electric motor 49 of the introduction mechanism 40 and the electric motor 58 of the support frame 50. Controlling the rotation of the electric motor 58 also includes specifying the direction of rotation.

[Operation of vertical packaging machine 1: FIGS. 5, 6, and 7]
Next, the operation of the vertical packaging machine 1 will be described with reference to FIGS. 5, 6 and 7. FIG. 5, 6, and 7 sequentially show one cycle of the packaging operation of the vertical packaging machine 1. FIG. 5(a) shows the state at the beginning of the first cycle (nth cycle) of the packaging operation, and FIG. 7 shows the state at the end of the first cycle (nth cycle) of the packaging operation. However, FIG. 7 also shows the state at the beginning of the second cycle (n+1 cycle) of the wrapping operation.

When the vertical packaging machine 1 starts the packaging operation, the support frame 50 is positioned so that the conveyor belt 41 of the introduction mechanism 40 is parallel to the horizontal direction H as shown in FIG. 5(a). This position is the first position P<b>1 of the packaging unit 10 .
When the packaging unit 10 is at the first position P1, the conveyor belt 41 of the introduction mechanism 40 receives the articles to be packaged T from the upstream US. Here, as an example, it is assumed that the conveyor belt 41 is stopped.
In the former mechanism 20, the bag-making operation is performed according to the procedure described above.

When the article to be packaged T is received by the conveyor belt 41 , the electric motor 58 is driven to tilt the support frame 50 clockwise, and the electric motor 49 is driven to convey the article to be packaged T toward the hopper 25 . The electric motors 58 and 49 are driven according to instructions from the controller 71 . Then, as shown in FIG. 5(b), the items to be packaged T are transferred from the introduction mechanism 40 to the former mechanism 20, and more specifically, the items to be packaged T pass through the hopper 25 and are thrown into the passage 24 of the bag making cylinder 23. As shown in FIG.

As shown in FIG. 6(a), when the support frame 50 is tilted more clockwise than before, the article to be packaged T reaches the bottom of the tubular film package TF. Then, the horizontal sealing machine 35 operates to separate the package PB from the tubular film package TF. The separated package PB drops onto the unloading conveyor 67 of the pedestal 60, and as shown in FIG. The positions of the former mechanism 20 and the support frame 50 at this time correspond to the second position P<b>2 of the packaging unit 10 . It should be noted that the former mechanism 20 in FIG. 6(a) forms the largest angle with respect to the horizontal direction H during the operation of the vertical packaging machine 1. As shown in FIG.

When the package PB is separated, the electric motor 58 is driven until the support frame 50 returns to the first position P1, as shown in FIG. When the support frame 50 returns to the first position P1, the conveyor belt 41 of the introduction mechanism 40 receives the next package T to be packaged. After that, the next item to be packaged T is packaged according to the procedure shown in the explanation starting with FIG. 5(a).

Here, both the first position P1 and the second position P2 have been described as fixed positions. However, in this embodiment, the first position P1 is the same position, that is, the angle with respect to the horizontal direction H is fixed, but the second position P2 is at a different position, that is, the angle with respect to the horizontal direction H can be selected according to the package T. For example, the second position P2 can be changed depending on whether or not the frictional resistance of the package T makes it easier to pass through the passage 24 of the bag-making tube 23 . That is, when the object T to be packaged easily passes through the passage 24, the angle of the bag-making cylinder 23 with respect to the horizontal direction H is reduced, and when the object T is difficult to pass through the passage 24, the angle of the bag-making cylinder 23 with respect to the horizontal direction H can be increased. Details of this will be described later with reference to FIG.

[effect]
Effects of the vertical packaging machine 1 will be described.
<First effect: space saving in the front-rear direction X; FIG. 8>
The vertical packaging machine 1 can shorten the dimension in the front-rear direction X by making the packaging unit 10 including the former mechanism 20 rotatable. Here, FIG. 8(a) shows how the former mechanism 20 according to this embodiment rotates, and FIG. 8(b) shows the former mechanism 120 whose position is fixed without rotating. Note that the former mechanism 120 has a dimension in the transport direction that is the sum of the introduction mechanism 40 and the former mechanism 20 according to the present embodiment. In addition, the former mechanism 120 requires a conveyor 121 as a device on the upstream side of the vertical packaging machine 1 that supplies the articles T to be packaged. The conveyor 121 has the same height Z1 as the dimension Z1 in the height direction Z due to the rotation of the former mechanism 20 .

As can be seen from a comparison of FIGS. 8A and 8B, the rotatable former mechanism 20 of the present embodiment has a shorter dimension in the front-rear direction X and a smaller occupied space than the stationary former mechanism 120. In addition, although the introduction mechanism 40 is shown in FIG. 8A, the effect of shortening the dimension in the front-rear direction X can be obtained even if the introduction mechanism 40 is not provided. The same applies to the second to fifth effects shown below.

<Second effect: prevention of damage to the package T; FIG. 8>
In the case of the former mechanism 120 whose position is fixed as shown in FIG. 8B, the angle formed by the former mechanism 120 with respect to the horizontal direction (H) is large. Therefore, in the case of the former mechanism 120, the received package T slides down the inside of the former mechanism 120 and hits the bottom of the tubular film package TF at a considerable speed, so that some of the package T may be damaged.
In contrast to the above, the former mechanism 20 shown in FIG. 8(a) forms a relatively small angle with respect to the horizontal direction (H) when receiving the package T, and thereafter the angle increases during continuous operation. Therefore, in the former mechanism 20, the speed at which the received package T collides with the bottom of the tubular film package TF can be made smaller than in the former mechanism 120, so that the package T can be prevented from being damaged.

<Third effect: simplification of upstream transfer device; FIG. 9>
As shown in FIG. 9, the vertical packaging machine 1 can have the first position P1 fixed at the same position and the second position P2 at a different position. According to this, regardless of the second position P2, the introduction mechanism 40 is at the same position at the first position P1. Therefore, the device that delivers the item to be packaged T from the upstream US only needs to be set at a fixed position corresponding to the introduction mechanism 40 at the first position P1, and its configuration can be simplified.
On the other hand, for example, when the object to be packaged T easily passes through the passage 24, the bag-making cylinder 23 is set to the second position P2-1 with a small angle with respect to the horizontal direction H, and when it is difficult for the object to be packaged T to pass through the passage 24, the bag-making cylinder 23 is set at, for example, the second position P2-2 or the second position P2-3 with a large angle with respect to the horizontal direction H.

<Fourth Effect: Ease of packaging of package T>
In the vertical packaging machine 1, the former mechanism 20 is rotatable, and the former mechanism 20 can be tilted up to the maximum angle shown in FIG. 6(a) to approach the vertical direction. Therefore, even if the material to be packaged T is made of a material that does not easily slide in the passage 24 of the bag-making cylinder 23, it can be easily transported through the passage 24 to the tubular film package TF.

<Fifth Effect: Ensuring Rotation of Packaging Unit 10 Including Former Mechanism 20; FIG. 4>
In the vertical packaging machine 1, a stand 60 that can hinder the rotational movement of the packaging unit 10 (the former mechanism 20 and the introduction mechanism 40) is located on the downstream side DS opposite to the upstream side US where the articles to be packaged T are received. In other words, in the vertical packaging machine 1, there is no element on the upstream US side of the introduction mechanism 40 that may interfere with the rotational movement of the packaging unit 10, and a space is secured. Moreover, since the notch 59 is provided below the frame 53 constituting the support frame 50 on the downstream DS side, as shown in FIG.

<Sixth effect: premise as a vertical packaging machine; Fig. 10>
The vertical packaging machine 1 has an angle θ3 between the conveyor belt 41 of the introduction mechanism 40 and the bag-making tube 23 of the former mechanism 20 . With this configuration, the function of the former mechanism 20 as a vertical packaging machine can be ensured. Here, FIG. 10(a) shows the positional relationship of the former mechanism 20 and the introduction mechanism 40 according to the present embodiment with respect to the ground UG, that is, the horizontal direction H, and FIG. 10(b) shows the positional relationship of the linear former mechanism 120 with respect to the ground UG. Note that the former mechanism 120 has a dimension in the transport direction that is the sum of the introduction mechanism 40 and the former mechanism 20 according to the present embodiment. Further, the former mechanism 20 and the former mechanism 120 have the same dimension Z3 in the height direction Z from the ground UG for receiving the package T. As shown in FIG.

10(a) and 10(b), the angle .theta.4 formed by the former mechanism 120 with respect to the ground UG is smaller than the angle .theta.2 formed by the former mechanism 20 with respect to the ground UG (.theta.2>.theta.4). In order to function as a vertical packaging machine, it is desired that the angle formed by the former mechanism 20 with respect to the horizontal direction H is large in order to ensure that the articles to be packaged T slide down the passage 24 inside the bag-making tube 23. Therefore, the former mechanism 20 having a large angle θ2 with respect to the horizontal direction H is preferable in terms of functioning as a vertical packaging machine.

Although the preferred embodiments of the present invention have been described above, it is possible to select the configurations mentioned in the above embodiments or to change them to other configurations as appropriate without departing from the gist of the present invention.
For example, in the introduction mechanism 40 described above, the conveyor belt 41 is provided as a preferred form. However, if the friction of the package T is small, a flat plate that is not driven without providing the conveyor belt 41 can be used.
In the introduction mechanism 40 described above, the introduction mechanism 40 crosses the former mechanism 20 at an angle θ3 as a preferred form, but the former mechanism 20 and the introduction mechanism 40 may be linear.

1 vertical packaging machine 10 packaging unit 20 former mechanism 21 former 23 bag-making cylinder 24 passage 25 hopper 27 film supply unit 29 roller 31 conveying belt 33 vertical sealing machine 35 horizontal sealing machine 40 introducing mechanism 41 conveyor belt 43 driving roller 45 driven roller 47 supporting column 49 electric motor 50 supporting frame 51 supporting beam 53 frame 54 supporting plate 55 connecting plate 56 supporting shaft 57 Bearing 58 Electric motor 59 Notch 60 Base 61 Base 63 Support plate 65 Caster 67 Unloading conveyor 68 Electric motor 70 Electrical housing 71 Control unit D23 Conveyance direction D41 Conveyance direction SF Sheet film FR Film roll TF Cylindrical film package P1 First position P2, P2-1, P2-2, P2-3 Second position PB Package T Packaged item US Upstream DS Downstream X Front-back direction Y Width direction Z Height direction

SUMMARY OF THE INVENTION An object of the present invention is to provide a vertical form-fill-seal machine capable of further reducing damage to packaged items .

According to the present invention, the item to be packaged is received at the first position, and the item to be packaged is packaged at the second position at a larger angle to the horizontal than at the first position. Adopting this configuration is advantageous in preventing damage to the package .

Claims (6)

a packaging unit that forms and packages a bag-like package into which the object to be packaged is placed;
a pedestal that rotatably supports the packaging unit,
The packaging unit
receiving the package at a first location;
packaging the item to be packaged at a second position having a larger angle with respect to the horizontal direction than the first position;
A vertical packaging machine characterized by:
The packaging unit
a former mechanism for forming a sheet-like film into a tubular shape;
an introduction mechanism that receives the item to be packaged from upstream and transfers the item to the former mechanism located downstream,
Let θ1 be the angle of the conveying direction of the article to be packed in the introduction mechanism with respect to the horizontal direction, and let θ2 be the angle of the passage direction of the article to be packed in the forming mechanism with respect to the horizontal direction.
the conveying direction and the passing direction intersect such that θ1<θ2 holds;
The vertical packaging machine according to claim 1.
The conveying direction is
parallel to a horizontal direction when the wrapper is in the first position;
The vertical packaging machine according to claim 2.
The introduction mechanism is
A conveyor is provided for conveying the article to be packaged received from upstream toward the former mechanism,
The vertical packaging machine according to claim 2 or 3.
At the first position, the angle θ1 is fixed constant,
At the second position, the angle θ2 is selected according to the item to be packaged.
The vertical packaging machine according to any one of claims 2 to 4.
The mount is
located on the downstream side opposite to the upstream side that receives the package,
The vertical packaging machine according to any one of claims 1 to 5.

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