Bag-making and packaging equipment and weighing and packaging system

Abstract

To suppress an installation space width of a system consisting of a bag making / packaging device and a combination weighing device.SOLUTION: A bag making / packaging device 10 includes two bag making / packaging machines 100A and 100B arranged on the right and left. Each bag making / packaging machine includes: a film supply part arranged in a rear part; a former mechanism arranged in a front part and cylindrically molding a sheet-like film supplied from the film supply part; and a horizontal seal mechanism for horizontally sealing the top and bottom of the cylindrical film having an article supplied from a combination weighing device 600 and thrown into the inside. Each bag making / packaging machine includes two combination weighing machines 610A and 610B approximately symmetrically bonded in a horizontal direction in the top view is arranged below a discharge chute of one combination weighing machine corresponding to the combination weighing device including a base member 690 for integrally supporting the combination weighing machine; and a maximum width W2 when viewing the bag making / packaging device from the front is smaller than a width W1 of the base member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a bag-making and packaging apparatus, and a weighing and packaging system including a combination weighing apparatus and a bag-making and packaging apparatus. [Background Art]

[0002] As disclosed in Patent Document 1 (Japanese Unexamined Patent Publication No. 2009-258040), a combination weighing apparatus is known which has two combination weighers symmetrically joined to each other in the left-right direction, and the two combination weighers are integrally supported by a base member.

[0003] By using such a combination weighing apparatus, the width of the space required for installing the combination weighing apparatus can be reduced compared to a case where two combination weighers (a combination weighing apparatus consisting of a single combination weigher) are simply arranged side by side. [Summary of the Invention] [Problem to be Solved by the Invention]

[0004] Incidentally, a combination weighing apparatus as disclosed in Patent Document 1 (Japanese Unexamined Patent Publication No. 2009-258040) is often used in combination with two bag-making and packaging machines arranged below the combination weighing apparatus.

[0005] In a system formed of such a combination, although the width of the space required for installing the combination weighing apparatus can be reduced, the width required for installing the entire system has not been sufficiently reduced due to problems on the side of the bag-making and packaging machines arranged below the combination weighing apparatus. [Means for Solving the Problem]

[0006] In the bag-making and packaging apparatus according to the first aspect of the present invention, two bag-making and packaging machines are arranged side by side. Each bag-making and packaging machine comprises a film supply unit, a former mechanism, a lateral sealing mechanism, and a control unit. The film supply unit is located at the rear. The former mechanism is located at the front. The former mechanism has a former and a tube. The former mechanism forms a sheet of film supplied from the rear film supply unit into a cylindrical shape. The lateral sealing mechanism is located below the former mechanism. The lateral sealing mechanism laterally seals the top and bottom of the cylindrical film into which the article supplied from above is inserted. The control unit controls the operation of the film supply unit and the lateral sealing mechanism. Each bag-making and packaging machine is positioned below the discharge chute of a corresponding combination weighing machine, which is a combination weighing device with two combination weighing machines joined together in a left-right direction in a top view, and which supply goods into a plurality of hoppers arranged along a portion of the circumference, and combine and discharge the goods stored in one or more hoppers selected according to the target weight, and which has a base member that supports the combination weighing machines as a whole. The maximum width of the bag-making and packaging device when viewed from the front is narrower than the width of the base member.

[0007] In the first aspect of the bag-making and packaging apparatus, the width of the space required for installing the system consisting of the bag-making and packaging apparatus and the combined weighing apparatus can be reduced.

[0008] A bag-making and packaging apparatus according to a second aspect of the present invention is a bag-making and packaging apparatus according to a first aspect, wherein each bag-making and packaging machine further comprises a storage section for housing a control unit circuit board. The storage section is located behind the former mechanism and the lateral sealing mechanism.

[0009] In the bag-making and packaging apparatus described in the second perspective, the control unit's circuit board is positioned behind the former mechanism and the lateral sealing mechanism, rather than on either side of the bag-making and packaging machine. This suppresses an increase in the width of the space required for installing the bag-making and packaging apparatus.

[0010] A bag-making and packaging apparatus according to a third aspect of the present invention is a bag-making and packaging apparatus according to a second aspect, wherein the storage section is located below the film transport path of the film supply section.

[0011] In the third-perspective bag-making and packaging apparatus, by positioning the storage section for storing the substrate below the film supply section, space can be effectively utilized, resulting in a compact bag-making and packaging apparatus. Furthermore, compared to the case where the storage section is positioned behind the film supply section, the third-perspective bag-making and packaging apparatus can also reduce the width in the front-to-back direction of the space required for the installation of the system consisting of the bag-making and packaging apparatus and the combined weighing device.

[0012] The bag-making and packaging apparatus of the fourth aspect is a bag-making and packaging apparatus of any of the first, second, or third aspects, wherein each bag-making and packaging machine has a plurality of upright support columns. The plurality of support columns constitute a frame that encloses at least a portion of each of the film supply section, the former mechanism, and the lateral sealing mechanism. The distance between the rightmost end of the rightmost support column and the leftmost end of the leftmost support column of the bag-making and packaging apparatus is less than the maximum width of the bag-making and packaging apparatus.

[0013] In the bag-making and packaging apparatus of the fourth perspective, the distance between the rightmost end of the rightmost support column and the leftmost end of the leftmost support column, which particularly affects the width of the space required for the installation of the bag-making and packaging apparatus, is smaller than the maximum width of the bag-making and packaging apparatus. Therefore, in the bag-making and packaging apparatus of the fourth perspective, the width of the space required for the installation of the system consisting of the bag-making and packaging apparatus and the combined weighing device is easily suppressed.

[0014] The bag-making and packaging apparatus of the fifth aspect is a bag-making and packaging apparatus of any of the first to fourth aspects, wherein each bag-making and packaging machine has a plurality of upright support columns. The plurality of support columns constitute a frame that encloses at least a portion of each of the film supply section, the former mechanism, and the lateral sealing mechanism. In the bag-making and packaging machine on the left, the front row of support columns on the left is positioned behind the tubes of the former mechanism. In the bag-making and packaging machine on the right, the front row of support columns on the right is positioned behind the tubes of the former mechanism.

[0015] In the fifth-perspective bag-making and packaging apparatus, space is provided to allow workers to access equipment such as the former mechanism inside the bag-making and packaging machine during cleaning and other maintenance, both to the left front of the left-hand bag-making and packaging machine and to the right front of the right-hand bag-making and packaging machine. As a result, the fifth-perspective bag-making and packaging apparatus can achieve high maintainability while keeping the width of the space required for installation of the bag-making and packaging apparatus to a minimum.

[0016] The bag-making and packaging apparatus of the sixth aspect is a bag-making and packaging apparatus of any of the first to fifth aspects, wherein the two bag-making and packaging machines have a structure that is substantially symmetrical in the left-right direction. Each bag-making and packaging machine has an opening on at least a portion of the side facing the other bag-making and packaging machine.

[0017] When two bag-making and packaging machines are installed close together in a left-right direction, it is difficult to access each machine from the side where the two machines are adjacent. As a result, a space that is difficult to clean is likely to be created on the side of each bag-making and packaging machine where the two machines are close together.

[0018] However, in the bag-making and packaging apparatus of the sixth perspective, openings are formed on opposing surfaces, creating a continuous space from the right end to the left end of the bag-making and packaging apparatus. With this configuration, for example, by blowing air from the right / left side of the bag-making and packaging machines located on the right / left side, dirt accumulated on the side where the two bag-making and packaging machines are close together can be easily moved to the left / right side of the bag-making and packaging machines located on the left / right side. As a result, the bag-making and packaging apparatus of the sixth perspective can achieve high cleanability while keeping the width of the installation space to a minimum.

[0019] The bag-making and packaging apparatus of the seventh aspect is the bag-making and packaging apparatus of the sixth aspect, further comprising a gap-closing member installed between two bag-making and packaging machines to close the gap between the bag-making and packaging machines.

[0020] In the bag-making and packaging device described in the seventh perspective, it is hygienic because it prevents waste from falling into the gaps of the bag-making and packaging machine.

[0021] The bag making and packaging apparatus according to the 8th aspect is the bag making and packaging apparatus according to any one of the 1st to 7th aspects, wherein each of the bag making and packaging machines has a partition plate disposed between the former mechanism and the transverse sealing mechanism in the vertical direction.

[0022] In the bag making and packaging apparatus according to the 8th aspect, since the partition plate is disposed between the former mechanism and the transverse sealing mechanism, the transverse sealing mechanism is less likely to be contaminated by debris such as fragments of articles dropped and supplied by the combination weighing apparatus. Furthermore, in the bag making and packaging apparatus according to the 8th aspect, since the partition plate disposed between the former mechanism and the transverse sealing mechanism is plate-shaped, when fragments of articles dropped and supplied by the combination weighing apparatus fall onto the partition plate, such fragments can be easily removed.

[0023] Therefore, in the bag making and packaging apparatus according to the 8th aspect, even if the space available for maintenance is reduced by arranging two bag making and packaging machines close to each other on the left and right, the bag making and packaging apparatus is easily kept clean.

[0024] A weighing and packaging system according to the 9th aspect comprises the bag making and packaging apparatus according to any one of the 1st to 8th aspects, and a combination weighing apparatus. The combination weighing apparatus includes two combination weighers joined substantially symmetrically in the left-right direction, and a base member that integrally supports the combination weighers. Each of the combination weighers has a plurality of hoppers arranged along a part of a circumference in a top view, and a discharge chute, weighs articles supplied into the hoppers, combines articles stored in one or more hoppers selected according to a target weight, and discharges the combined articles from the discharge chute.

[0025] In the weighing and packaging system according to the 9th aspect, reduction of the width of the space required for installing the system including the bag making and packaging apparatus and the combination weighing apparatus can be achieved.

[0026] A weighing and packaging system according to the 10th aspect is the weighing and packaging system according to the 9th aspect, further comprising a gantry. The gantry has a tread plate disposed around the base member, and a gantry frame that supports the tread plate.

[0027] In the weighing and packaging system according to the 10th aspect, a maintenance space can be secured around the combination weighing device.

Effects of the Invention

[0028] In the bag making and packaging apparatus and the weighing and packaging system of the present invention, it is possible to reduce the width of the space required for installing the system including the bag making and packaging apparatus and the combination weighing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] [Figure 1] It is a schematic perspective view of the weighing and packaging system according to an embodiment of the present invention. [Figure 2] It is a schematic top view of the combination weighing device in FIG. 1. [Figure 3] It is a schematic configuration diagram of the bag making and packaging apparatus of the weighing and packaging system in FIG. 1. [Figure 4] It is a diagram illustrating the inside of a cover of a bag making and packaging machine of the bag making and packaging apparatus in FIG. 3. [Figure 5] It is a schematic front view of the bag making and packaging apparatus in FIG. 3. [Figure 6] It is a schematic view of the bag making and packaging apparatus in FIG. 3 as viewed from the upper right. [Figure 7] It is a schematic top view of the bag making and packaging apparatus in FIG. 3. [Figure 8] It is a schematic perspective view of a bag making and packaging machine disposed on the right side of the bag making and packaging apparatus in FIG. 3. [Figure 9] It is a schematic perspective view of the bag making and packaging machine in FIG. 8 from another angle. [Figure 10] It is a schematic configuration diagram of the bag making and packaging machine in FIG. 8. [Figure 11] It is a schematic plan view illustrating the arrangement of support columns of the bag making and packaging apparatus in FIG. 3. [Figure 12] It is a schematic right side view illustrating the arrangement of support columns of a frame of the bag making and packaging machine in FIG. 8. [Figure 13] It is a diagram schematically illustrating the bag making and packaging machine in FIG. 8 as viewed from the left. MODE FOR CARRYING OUT THE INVENTION

[0030] With reference to the drawings, a weighing and packaging system 1, which is one embodiment of the weighing and packaging system of the present invention, and a bag-making and packaging apparatus 10, which is one embodiment of the bag-making and packaging apparatus of the present invention, will be described. Note that the following embodiments are specific examples of the present invention and do not limit the technical scope of the present invention.

[0031] In the following explanation, expressions such as vertical, orthogonal, horizontal, plumb, and symmetric may be used to describe directions and positional relationships. However, these expressions are not limited to their strict meanings and include cases where the resulting structure, results, and functions are substantially unchanged, while still being vertical, orthogonal, horizontal, plumb, or symmetric. Furthermore, expressions such as "approximately" and "about" may be used in the following explanation. These expressions indicate that the words to which they are attached are not limited to their strict meanings, but words not used with these expressions are also not limited to their strict meanings. In addition, expressions such as front, back, top, bottom, left, and right will be used to describe directions and arrangements. Unless otherwise specified, front, back, top, bottom, left, and right here refer to the direction of the arrows indicated in the drawings.

[0032] In this disclosure, the side on which the film supply unit 300 of the bag-making and packaging apparatus 10, described later, is located, as viewed from the bag-making and packaging unit 200 of the bag-making and packaging apparatus 10, described later, is defined as the rear. Furthermore, the horizontal direction that is perpendicular to the front-to-back direction is defined as the left-to-right direction.

[0033] (1) Weighing and packaging system The weighing and packaging system 1 will be explained with reference to Figure 1. Figure 1 is a schematic perspective view of the weighing and packaging system 1.

[0034] As shown in Figure 1, the weighing and packaging system 1 mainly comprises a combined weighing device 600, a bag-making and packaging device 10, and a stand 700.

[0035] As shown in Figure 1, the combined weighing device 600 includes two combined weighing machines 610A and 610B joined symmetrically in the left-right direction, and a base member 690. The base member 690 supports the two combined weighing machines 610A and 610B as a single unit. In this embodiment, the combined weighing machine located on the right is called combined weighing machine 610A, and the combined weighing machine located on the left is called combined weighing machine 610B. Each of the combined weighing machines 610A and 610B weighs the items P supplied to the combined weighing machines 610A and 610B in a plurality of weighing hoppers 650, which will be described later, and combines the weighing values ​​of the plurality of weighing hoppers 650 so that the total weight is within a predetermined weight range (target weight). Then, each of the combination weighing machines 610A and 610B combines the items P stored in one or more weighing hoppers 650, selected according to the target weight, and finally discharges them from the discharge chute 670, which will be described later.

[0036] The bag-making and packaging apparatus 10 includes two bag-making and packaging machines 100A and 100B arranged side by side, as shown in Figure 1. Bag-making and packaging machine 100A is located on the right side, and bag-making and packaging machine 100B is located on the left side. Bag-making and packaging machine 100A is located below one of the corresponding combination weighing machines 610A of the combination weighing apparatus 600, and bag-making and packaging machine 100B is located below one of the corresponding combination weighing machines 610B of the combination weighing apparatus 600. Each of the bag-making and packaging machines 100A and 100B receives goods P from the corresponding combination weighing machines 610A and 610B located above them.

[0037] Each of the bag-making and packaging machines 100A and 100B manufactures a bag-shaped packaging material from a sheet-like film F, and produces a bag B in which the goods P supplied from the corresponding combination weighing machines 610A and 610B are contained.

[0038] The stand 700 is positioned to surround the combined weighing device 600 and the bag-making and packaging device 10. The stand 700 is a structure that provides a maintenance space for the combined weighing device 600. As shown in Figure 1, the stand 700 has a footboard 710 positioned around the base member 690 of the combined weighing device 600, and a stand frame 720 that supports the footboard 710. Workers stand on the footboard 710 and perform various maintenance on the combined weighing device 600.

[0039] (2) Combination weighing device The combination weighing device 600 will be explained in more detail with further reference to Figure 2. Figure 2 is a schematic diagram of the combination weighing device 600.

[0040] As shown in Figure 1, the combination weighing device 600 mainly comprises two combination weighing machines 610A and 610B, a base member 690, an article sorting unit 680, and a control unit (not shown).

[0041] The two combination weighing machines 610A and 610B are joined together in a manner that is approximately symmetrical in the left-right direction when viewed from above (see Figure 2). In other words, in the combination weighing device 600, when viewed from above, the combination weighing machine 610A and the head H arranged around the distribution table 620 of the combination weighing machine 610A are arranged approximately symmetrically with the distribution table 620 of the combination weighing machine 610B and the head H arranged around the distribution table 620 of the combination weighing machine 610B, and the combination weighing machine 610A and 610B are joined together in this manner.

[0042] The base member 690 is a member that supports the combination weighing machines 610A and 610B from below. When viewed in the left-right direction, the width W1 of the base member 690 is narrower than the overall width W0 of the bag-making and packaging device 10.

[0043] The item distribution unit 680 distributes and supplies the items P transported by a conveyor (not shown) to two combination weighing machines 610A and 610B. The control unit of the combination weighing device 600 (not shown) performs combination calculations, described later, for each of the combination weighing machines 610A and 610B, and controls the operation of various components.

[0044] The combination weighing machines 610A and 610B mainly consist of a distribution table 620, a plurality of heads H arranged around the distribution table 620, and a discharge chute 670 (see Figure 2).

[0045] Each of the multiple heads H has one radiating trough 630, one pool hopper 640, one metering hopper 650, and one booster hopper 660.

[0046] The control unit performs a combination calculation based on the weights of the items P in multiple weighing hoppers 650. The combination calculation is a calculation that combines the weight values ​​of the items P in each weighing hopper 650 and selects a combination of weight values ​​(a combination of one or more weighing hoppers 650 corresponding to the weight values) such that the total weight falls within a predetermined weight range (target weight). The control unit discharges the items P from one or more weighing hoppers 650 selected according to the target weight based on the combination calculation, or from a booster hopper 660 that temporarily stores the items P weighed in the weighing hoppers 650. The items P discharged from the weighing hoppers 650 or via the booster hopper 660 are collected in a discharge chute 670 and discharged from the discharge chute 670 to a bag-making and packaging machine 100A (or bag-making and packaging machine 100B if it is a combination weighing machine 610B) located below the combination weighing machine 610A.

[0047] (3) Bag making and packaging equipment The bag-making and packaging apparatus 10 will be described in detail with further reference to Figures 3 to 10. Figure 3 is a schematic configuration diagram of the bag-making and packaging apparatus 10. Figure 4 is a diagram showing the inside of the cover 580 of the bag-making and packaging machines 100A and 100B of the bag-making and packaging apparatus 10. Figure 5 is a schematic front view of the bag-making and packaging apparatus 10. Figure 6 is a schematic view of the bag-making and packaging apparatus 10 from the upper right. Figure 7 is a schematic top view of the bag-making and packaging apparatus 10. Figure 8 is a schematic perspective view of the bag-making and packaging machine 100B, which is located to the right of the bag-making and packaging apparatus 10. Figure 9 is a schematic perspective view of the bag-making and packaging machine 100A, taken from a different angle than in Figure 8. Note that Figure 9 shows the state with the door 582, which will be described later and is located at the front upper part of the bag-making and packaging machine 100A, open, and the protective plate 590 (see Figure 8), located at the front lower part of the bag-making and packaging apparatus 10, removed. Figure 9 also shows the former mechanism 210 and the vertical sealing mechanism 230, which will be described later, moved from their operating positions in the bag-making and packaging device 10 for maintenance or other purposes. Figure 10 is a schematic diagram of the bag-making and packaging machine 100A.

[0048] As shown in Figure 3, the bag-making and packaging apparatus 10 has two bag-making and packaging machines 100A and 100B installed side by side.

[0049] The bag-making and packaging machines 100A and 100B are positioned with minimal gaps in the left-right direction when viewed from the front of the bag-making and packaging device 10, for example, at intervals of 10 mm to 30 mm. As a result, the maximum width W2 of the bag-making and packaging device 10 is narrower than the width W1 of the base member 690 of the combined weighing device 600.

[0050] A small gap is created between the bag-making and packaging machine 100A and the bag-making and packaging machine 100B. Therefore, the bag-making and packaging device 10 is provided with a gap-closing member 420 to close this gap (see Figures 4 and 7). The gap-closing member 420 is not limited in shape, but is a flat plate-shaped member that extends in the front-to-back direction. The gap-closing member 420 is positioned flush with, for example, the first partition plate 250 and the second partition plate 260 of the bag-making and packaging machines 100A and 100B, which will be described later. Alternatively, the gap-closing member 420 may be installed in place of the above position, or in addition to the above position, between the top plate 502 and the frame 500 that support the metal inspection device 400 of the two bag-making and packaging machines 100A and 100B. The gap-closing member 420 prevents debris such as fragments of articles P falling from above from falling onto the floor or other surface between the bag-making and packaging machine 100A and the bag-making and packaging machine 100B.

[0051] Preferably, the bag-making and packaging machines 100A and 100B have a structure that is symmetrical in the left-right direction, as shown in Figures 3 to 8. Here, the arrangement of the bag-making and packaging machines 100A and 100B symmetrically means that the main components of the bag-making and packaging machine 100A and the main components of the bag-making and packaging machine 100B are arranged symmetrically in the left-right direction.

[0052] Furthermore, it is preferable that each of the bag-making and packaging machines 100A and 100B has an opening Op on at least a portion of the side facing the other bag-making and packaging machine 100B or 100A. In particular, if the bag-making and packaging machines 100A and 100B have a structure that is symmetrical in the left-right direction, the internal space of the bag-making and packaging machine 100A and the internal space of the bag-making and packaging machine 100B are in communication through the opening Op.

[0053] The opening Op will be explained with reference to Figure 13, which schematically shows the bag-making and packaging machine 100A as viewed from the left side (the side adjacent to the bag-making and packaging machine 100B). In Figure 13, the hatched areas indicate the locations where covers that enclose the frame and equipment are attached (i.e., the locations where components exist), and the areas without hatching indicate the opening Op. When the bag-making and packaging machines 100B and 100A are configured symmetrically, the spaces within the frame 500 of both bag-making and packaging machines 100A and 100B are connected via the opening Op. For example, the space above the first partition plate 250 of the bag-making and packaging section 200 of bag-making and packaging machine 100A and the space above the first partition plate 250 of the bag-making and packaging section 200 of bag-making and packaging machine 100B become a continuous space V, as shown in Figure 4, due to the existence of the opening Op. The same applies to the space above the second partition plate 260 in the film supply section 300 of the bag-making and packaging machine 100A, and to the space above the second partition plate 260 in the film supply section 300 of the bag-making and packaging machine 100B.

[0054] Therefore, for example, by blowing air from the left side of the left-side bag-making and packaging machine 100A, the debris present in the space inside the bag-making and packaging machine 100A and the space inside the bag-making and packaging machine 100B can be moved by air pressure to the right end of the right-side bag-making and packaging machine 100B. In particular, in the bag-making and packaging device 10 of this embodiment, the presence of the first partition plate 250 and the second partition plate 260 of the bag-making and packaging machines 100A and 100B, and the gap-closing member 420 prevents debris from falling below the first partition plate 250 and the second partition plate 260 and the gap-closing member 420. Furthermore, the first partition plate 250 and the second partition plate 260 of the bag-making and packaging machine 100A may be tilted so that the gap-closing member 420 side (left end) is higher than the right end, and the first partition plate 250 and the second partition plate 260 of the bag-making and packaging machine 100B may be tilted so that the gap-closing member 420 side (right end) is higher than the left end. This makes it even easier to remove debris.

[0055] (3-1) Bag making and packaging machine The bag-making and packaging machine 100A will be explained in detail. Note that the bag-making and packaging machine 100B has the same structure as the bag-making and packaging machine 100A except for the symmetrical arrangement, so unless necessary, the explanation of the bag-making and packaging machine 100B will be omitted.

[0056] The bag-making and packaging machine 100A manufactures bag-shaped packaging material from a sheet-like film F, and produces a bag B in which an item P is contained (see Figure 10). The item P to be contained in bag B is supplied from a combination weighing machine 610A located above the bag-making and packaging machine 100A (or from the combination weighing machine 610B if the bag-making and packaging machine is 100B).

[0057] The bags B manufactured by the bag-making and packaging machine 100A are transported by the conveying device 2, and the seal condition of the bags B is inspected by the seal inspection device 3 while they are being transported by the conveying device 2 (see Figure 8).

[0058] As shown in Figures 8 to 10, the bag-making and packaging machine 100A mainly includes a film supply unit 300, a bag-making and packaging unit 200, a metal inspection device 400, a frame 500, a control unit 460, a first partition plate 250, and a second partition plate 260.

[0059] The film supply unit 300 is located at the rear of the bag-making and packaging machine 100A. The film supply unit 300 supplies sheet-like film F to the bag-making and packaging unit 200, which is located at the front. The bag-making and packaging unit 200 is located at the front of the bag-making and packaging machine 100A. The bag-making and packaging unit 200 forms the sheet-like film F into a cylindrical shape and seals the formed cylindrical film Ft laterally to produce bags B. The metal inspection device 400 inspects for the presence of foreign matter (metal) in the articles P that are dropped and supplied to the bag-making and packaging machine 100A from a combination weighing machine (not shown). The frame 500 mainly supports the film supply unit 300, the bag-making and packaging unit 200, and the metal inspection device 400. The control unit 460 controls the operation of each part of the film supply unit 300 and the bag-making and packaging unit 200, and performs various calculations and processing. The first partition plate 250 separates the space above it from the space below it. The second partition plate 260 separates the space above it from the space below it. The positions in which the first partition plate 250 and the second partition plate 260 are placed will be described later.

[0060] (3-1-1) Film supply unit The film supply unit 300 is located at the rear of the bag-making and packaging machine 100A. The film supply unit 300 is located behind the bag-making and packaging unit 200, and is positioned alongside the bag-making and packaging unit 200. The film supply unit 300 supplies sheet-like film F to the former mechanism 210 of the bag-making and packaging unit 200, which will be described later, located in front of it.

[0061] As shown in Figure 10, the film supply unit 300 mainly includes a film roll support mechanism 310 and a guide mechanism 320.

[0062] The film roll support mechanism 310 holds a film roll FR in which a sheet of film F is wound around a core (not shown). The film roll support mechanism 310 uses a drive unit such as a motor (not shown) to rotate the shaft 312 (see Figures 10-11) to which the core of the film roll FR is attached, thereby unwinding the film F from the film roll FR.

[0063] The guide mechanism 320 includes a plurality of rollers arranged along the transport path R of the film F. The guide mechanism 320 guides the film F, which is unwound from the film roll FR, to the former mechanism 210 of the bag-making and packaging section 200.

[0064] (3-1-2) Second partition plate The second partition plate 260 is a plate-shaped member located at the rear of the bag-making and packaging machine 100A, below the transport path R of the film F by the guide mechanism 320 of the film supply unit 300 (see Figure 6). The second partition plate 260 separates the space above the second partition plate 260, through which the film F is transported, from the space below the second partition plate 260.

[0065] Preferably, a storage unit (control box) 450 for housing the substrate 462 of the control unit 460, which will be described later, is arranged in the space below the second partition plate 260. In other words, it is preferable that the storage unit 450 for housing the substrate 462 is arranged below the transport path R of the film F of the film supply unit 300. By arranging the storage unit 450 in this position, the width of the bag-making and packaging device 10 is more easily suppressed compared to when the storage unit 450 is arranged, for example, to the right of the bag-making and packaging machine 100A. Also, by arranging the storage unit 450 in this position, the height of the bag-making and packaging device 10 is more easily suppressed compared to when the storage unit 450 is arranged above the transport path R of the film F of the film supply unit 300, and the length of the bag-making and packaging device 10 in the front-to-back direction is more easily suppressed compared to when the storage unit 450 is arranged behind the transport path R of the film F of the film supply unit 300.

[0066] Furthermore, since the second partition plate 260 suppresses the falling of debris from above, the occurrence of situations where debris adversely affects the substrate 462 in the space below the second partition plate 260 is less likely to occur. However, the presence of the second partition plate 260 is not essential.

[0067] (3-1-3) Bag making and packaging department As shown in Figure 10, the bag-making and packaging unit 200 mainly includes a former mechanism 210, a conveying mechanism 220, a vertical sealing mechanism 230, and a horizontal sealing mechanism 240.

[0068] The former mechanism 210 mainly includes a former 212, a tube 214, a base 216, and a gripping portion 218.

[0069] The former 212 is positioned to surround the cylindrical tube 214 and bends the sheet-like film F, which is transported from the film supply unit 300 at the rear of the bag-making and packaging machine 100B, so that the left and right ends of the film F in the width direction overlap, thereby forming it into a cylindrical shape. The cylindrical film Ft formed by the former 212 is guided to wrap around the outer circumference of the lower side of the cylindrical tube 214 and is transported downward while wrapped around the tube 214.

[0070] The tube 214 is a cylindrical member that extends vertically and has openings at its upper and lower ends. The tube 214 receives the falling object P at its upper opening and supplies the object P, which is fed in through the upper opening, into the interior of the cylindrical film Ft through its lower opening.

[0071] The base 216 is mounted and fixed on a mounting section (not shown) provided on the first partition plate 250, which will be described later. The former 212 and tube 214 are attached to the base 216 either directly or via other components, and the base 216 supports the former 212 and tube 214. A gripping section 218 is also attached to the base 216 either directly or via other components. When attaching or detaching the former mechanism 210 from the mounting section, the operator grasps the gripping section 218 and moves the former mechanism 210.

[0072] The transport mechanism 220 is positioned below the base 216. The transport mechanism 220 is positioned on both the left and right sides of the portion 214a of the tube 214 around which the tubular film Ft is wound. The transport mechanism 220 transports the film F unwound from the film roll FR to the former mechanism 210, and then transports the tubular film Ft formed by the former 212 to the lateral sealing mechanism 240. The transport mechanism 220 has a pull-down belt 226 with a suction function, and transports the tubular film Ft downward by driving the drive roller 222 around which the pull-down belt 226 is wound while the film F is held in place by a drive mechanism such as a motor (not shown).

[0073] The vertical sealing mechanism 230 seals the overlapping portions of the left and right ends of the tubular film Ft. The vertical sealing mechanism 230 is positioned in front of the path through which the overlapping portions of the left and right ends of the tubular film Ft, which is being transported wrapped around the tube 214, are transported. A heater (not shown) is built into the vertical sealing mechanism 230. When the heater is turned ON, the vertical sealing mechanism 230 is driven by a drive unit (not shown), and when the vertical sealing mechanism 230 is pressed against the tube 214 via the tubular film Ft, the overlapping portions of the left and right ends of the tubular film Ft are sealed in the vertical direction.

[0074] As shown in Figure 2, the lateral sealing mechanism 240 is located below the vertical sealing mechanism 230. The lateral sealing mechanism 240 laterally seals the top and bottom of one portion of the tubular film Ft (used to manufacture one bag B) to produce the bag B containing the article P. Specifically, the lateral sealing mechanism 240 laterally seals the vertically sealed tubular film Ft, which is being transported downward by the transport mechanism 220, in a direction perpendicular to the transport direction A of the tubular film Ft, thereby forming the lateral sealed portion of the bag B.

[0075] (3-1-4) First partition plate The first partition plate 250 is an example of a partition plate, and is a plate-shaped member positioned below the base 216 of the former mechanism 210 and above the lateral sealing mechanism 240 (see Figures 4, 6, and 8). The first partition plate 250 prevents debris from falling onto the vertical sealing mechanism 230 and the lateral sealing mechanism 240, which are positioned below the first partition plate 250.

[0076] The first partition plate 250 is positioned to surround the former mechanism 210. The first partition plate 250 has a through hole (not shown) that runs vertically through it, and the tube 214 of the former mechanism 210 is inserted into this through hole. Preferably, when viewed from above, the entire through hole is covered by the base 216 of the former mechanism 210.

[0077] (3-1-5) Metal detection device The metal detection device 400 is positioned above the upper end of the tube 214 of the former mechanism 210. In other words, the metal detection device 400 is positioned above the former mechanism 210. The metal detection device 400 inspects for the presence of foreign matter (metal) in the article P that is dropped from the combination weighing machine into the opening at the upper end of the tube 214. The metal detection device 400 is supported by a frame 500 and a top plate 502 that rests on the frame 500 (see Figure 9). The top plate 502 is divided into front and rear sections, and removing one of them facilitates access to the metal detection device 400, making cleaning and maintenance easier. The metal detection device 400 itself is a known device, so a detailed description is omitted.

[0078] (3-1-6) Control Unit The control unit 460 is positioned below the transport path R of the film F of the film supply unit 300. The control unit 460 controls the operation of various components of the bag-making and packaging device 10. The expression that each bag-making and packaging machine 100A and 100B has a control unit 460 also includes cases where a single device functions as both the control unit 460 for bag-making and packaging machine 100A and the control unit 460 for bag-making and packaging machine 100B.

[0079] The control unit 460 includes a circuit board 462 on which various electronic components are mounted. The electronic components mounted on the circuit board 462 include, for example, a CPU and memory. The control unit 460 controls the operation of various components of the bag-making and packaging apparatus 10, such as the film supply unit 300, the transport mechanism 220 of the bag-making and packaging unit 200, the vertical sealing mechanism 230, and the horizontal sealing mechanism 240, by having the CPU read and execute a program stored in memory.

[0080] The substrate 462 is located in the storage unit (control box) 450. The storage unit 450 is located behind the former mechanism 210 and the lateral sealing mechanism 240. Conventionally, the substrate storage unit has been located to the left or right of the bag-making and packaging machine 100A. In contrast, by locating the substrate storage unit behind the former mechanism 210 and the lateral sealing mechanism 240, the width of the bag-making and packaging device 10 can be easily reduced. In particular, as described above, by locating the storage unit 450 below the transport path R of the film F of the film supply unit 300, the size of the bag-making and packaging machine 100A, and consequently the bag-making and packaging device 10, can be easily reduced.

[0081] (3-1-7) Frame The frame 500 will be described with reference to Figures 11 and 12. Figure 11 is a schematic plan view showing the arrangement of the support columns 510 of the bag-making and packaging device 10. Figure 12 is a schematic right side view showing the arrangement of the support columns 510 of the frame 500 of the bag-making and packaging machine 100A. In Figures 11 and 12, hatching is applied to the support columns 510 for clarity.

[0082] The frame 500 of the bag-making and packaging machine 100A supports various equipment and parts of the film supply section 300, various equipment and parts of the bag-making and packaging section 200, and the metal inspection device 400.

[0083] The frame 500 includes multiple upright support columns 510 and beams spanning between the support columns 510. In other words, the frame 500 is composed of support columns 510 and beams. Here, we will mainly explain the support columns 510 in particular. Note that the support columns 510 referred to here are columns whose upper ends are positioned above the lateral sealing mechanism 240.

[0084] The frame 500, which includes multiple support columns 510, encloses at least a portion of each of the film supply unit 300, the former mechanism 210, and the lateral sealing mechanism 240.

[0085] Here, the statement that the frame 500 encloses at least a portion of the film supply unit 300 means that, when viewed from above, at least a portion of the film supply unit 300 is located within the area enclosed by a virtual straight line extending horizontally through the frontmost support column 510, a virtual straight line extending horizontally through the rearmost support column 510, a virtual straight line extending vertically through the rightmost support column 510, and a virtual straight line extending vertically through the leftmost support column 510 (within the rectangle in Figure 11). The same applies to the statement that the frame 500 encloses at least a portion of the former mechanism 210 and the lateral sealing mechanism 240, respectively.

[0086] The multiple support columns 510 include a first support column group 520, which includes multiple support columns 510 located on the side of the bag-making and packaging machine 100A adjacent to the bag-making and packaging machine 100B (in this case, the left side), and a second support column group 530, which includes multiple support columns 510 located on the side of the bag-making and packaging machine 100A not adjacent to the bag-making and packaging machine 100B (in this case, the right side) (see Figure 11). In this case, since the bag-making and packaging machine 100B has a structure that is symmetrical to the bag-making and packaging machine 100A in the left-right direction, the multiple support columns 510 located on the right side adjacent to the bag-making and packaging machine 100A are the first support column group 520, and the multiple support columns 510 located on the left side of the bag-making and packaging machine 100A that is not adjacent to the bag-making and packaging machine 100B are the second support column group 530 (see Figure 11).

[0087] In the bag-making and packaging machine 100B, the multiple support columns 510 are arranged asymmetrically with respect to a virtual straight line K extending from the center of the bag-making and packaging machine 100B in the left-right direction.

[0088] Specifically, among the pillars 510 of the first pillar group 520, the first pillar 522, which is positioned furthest forward, is positioned in front of the center O of the tube 214 (forward with respect to a virtual straight line L passing through the center O) when viewed from above. More preferably, the first pillar 522 is positioned in front of the tube 214 (in particular, the portion 214a of the tube 214 around which the tubular film Ft formed into a cylindrical shape by the former 212 is wrapped). On the other hand, among the pillars 510 of the second pillar group 530, the second pillar 532, which is positioned furthest forward, is positioned behind the center O of the tube 214 (behind the virtual straight line L passing through the center O) when viewed from above. More preferably, the second pillar 532 is positioned behind the portion 214a of the tube 214.

[0089] Here, the center O of the tube 214 refers to the position of the centroid of the cross-section obtained by horizontally cutting portion 214a of the tube 214. For example, if the cross-sectional shape of portion 214a of the tube 214 is annular, then the center O of the tube 214 is the center of the cross-section obtained by horizontally cutting portion 214a of the tube 214. Note that the cross-sectional shape of portion 214a of the tube 214 may be other than annular, such as an ellipse.

[0090] The first support column 522 extends from below the lateral sealing mechanism 240 to above the lateral sealing mechanism 240. Similarly, the second support column 532 also extends from below the lateral sealing mechanism 240 to above the lateral sealing mechanism 240. Specifically, for example, the first support column 522 and the second support column 532 extend from the base 550 at the bottom of the bag-making and packaging machine 100B to above the upper end of the tube 214 of the former mechanism 210.

[0091] The first support column 522 and the second support column 532 directly or indirectly support, for example, the former mechanism 210. In particular, the first support column 522 supports a heavy metal inspection device 400, which is located above the former mechanism 210. The first support column 522 also supports the cover 580 of the bag-making and packaging machine 100B.

[0092] Here, the cover 580 is a member that covers the front and right side of the former mechanism 210. The cover 580 is attached to the first support column 522, which supports the cover 580. The portion of the cover 580 that covers the front and right side is a door 582 that can be opened and closed. For maintenance, etc., the door 582 can be rotated using a hinge provided on the first support column 522 as a pivot point (see Figure 9), allowing the worker to access the former mechanism 210, the transport mechanism 220, the vertical sealing mechanism 230, etc. The cover 580 may also be designed to cover the beams of the frame 500. This can further prevent debris from getting between the cover 580 and the frame 500. From the viewpoint of maintainability, it is preferable that a part of the first partition plate 250 is attached to the door 582, and that a part of the first partition plate 250 moves together with the door 582 when the door 582 is opened. With this configuration, the first partition plate 250 is less likely to interfere with the work, and a bag-making and packaging device 10 with high maintainability can be realized.

[0093] Furthermore, it is preferable that the distance between the rightmost end 510R of the rightmost support column 510 and the leftmost end 510L of the leftmost support column 510 in the bag-making and packaging device 10 is smaller than the maximum width W2 of the bag-making and packaging device 10. This makes it particularly easy to reduce the width in the left-right direction of the space required for the installation of the weighing and packaging system 1.

[0094] The effects obtained by arranging the support columns 510 as shown in Figures 11 and 12 will be explained.

[0095] One of the advantages of the structure of the frame 500 of the bag-making and packaging machine 100A is that, in the left-right direction, it is easy to secure working space for the former mechanism 210 and the like on the side where the second support column group 530 is located (in this case, the right side). Specifically, as shown in Figure 9, when the door 582 of the cover 580 is opened, there are no support columns 510 on the right side of the bag-making and packaging device 10, at least in front of the center O of the tube 214. Therefore, it is easy for an operator to enter the frame 500 from the right side or the front right side of the bag-making and packaging device 10, grasp the gripping part 218 of the former mechanism 210, and remove the former mechanism 210 from the bag-making and packaging device 10. In addition, since there are no support columns 510 on the right side of the bag-making and packaging device 10, at least in front of the center O of the tube 214, the removal of the former mechanism 210 is less likely to be hindered by the support columns 510.

[0096] Another advantage of this structure lies in the structural stability of the frame 500. Specifically, in the left-right direction, on the side where the first support group 520 is located (in this case, the left side), the first support 522 is positioned in front of the center O of the tube 214, so that it can firmly support heavy objects such as the metal inspection device 400 positioned on top of the former mechanism 210 (partially positioned in front of the center O of the tube 214, as shown in Figure 12 in this embodiment) and the cover 580 positioned around the former mechanism 210.

[0097] Furthermore, since debris may accumulate between the lower end of the cover 580 and the ground, a horizontal elongated hole may be provided at the bottom of the cover 580 so that an air blowing nozzle can be inserted through it.

[0098] (4) Features of the bag-making and packaging equipment and weighing and packaging system (4-1) In the bag-making and packaging apparatus 10, two bag-making and packaging machines 100A and 100B are arranged side by side on the left and right. Each bag-making and packaging machine 100A and 100B is equipped with a film supply unit 300, a former mechanism 210, a lateral sealing mechanism 240, and a control unit 460. The film supply unit 300 is located at the rear. The former mechanism 210 is located at the front. The former mechanism 210 has a former 212 and a tube 214, and forms the sheet-like film F supplied from the rear film supply unit 300 into a cylindrical shape. The lateral sealing mechanism 240 is located below the former mechanism 210 and laterally seals the top and bottom of the cylindrical film Ft into which the article P supplied from above is inserted. The control unit 460 controls the operation of the film supply unit 300 and the lateral sealing mechanism 240. Each of the bag-making and packaging machines 100A and 100B is positioned below the discharge chute 670 of a corresponding combination weighing machine 610A or 610B, which is a combination weighing device 600, where two combination weighing machines 610A and 610B are joined together in a roughly symmetrical manner in the left-right direction when viewed from above, and which are supported as a single unit by a base member 690. The combination weighing device 600 is positioned below the discharge chute 670 of a corresponding combination weighing machine 610A or 610B. The maximum width W2 of the bag-making and packaging device 10 when viewed from the front is narrower than the width W1 of the base member 690.

[0099] The bag-making and packaging device 10 can reduce the width of the space required for installing the weighing and packaging system 1, which consists of the bag-making and packaging device 10 and the combined weighing device 600.

[0100] (4-2) In the bag-making and packaging apparatus 10, each of the bag-making and packaging machines 100A and 100B is equipped with a storage section (control box) 450 that houses the circuit board 462 of the control unit 460. The storage section 450 is located behind the former mechanism 210 and the lateral sealing mechanism 240.

[0101] In the bag-making and packaging apparatus 10, the circuit board 462 of the control unit 460 is located behind the former mechanism 210 and the lateral sealing mechanism 240, rather than on the left and right sides of the bag-making and packaging machines 100A and 100B. This suppresses an increase in the width of the space required for the installation of the bag-making and packaging apparatus 10.

[0102] (4-3) In the bag-making and packaging apparatus 10, the storage section 450 is located below the transport path R of the film F of the film supply section 300.

[0103] In the bag-making and packaging apparatus 10, by arranging the storage section 450 for housing the substrate 462 below the film supply section 300, space can be effectively utilized to realize a compact bag-making and packaging apparatus 10. Furthermore, compared to the case where the storage section 450 is located behind the film supply section 300, the width of the space required for the installation of the weighing and packaging system 1 can be reduced in the front-to-back direction.

[0104] (4-4) In the bag-making and packaging apparatus 10, each of the bag-making and packaging machines 100A and 100B has a plurality of upright support columns 510. The plurality of support columns 510 constitute a frame 500 that encloses at least a portion of each of the film supply unit 300, the former mechanism 210, and the lateral sealing mechanism 240. The distance W3 between the rightmost end 510R of the rightmost support column 510 and the leftmost end 510L of the leftmost support column 510 of the bag-making and packaging apparatus 10 is smaller than the maximum width W2 of the bag-making and packaging apparatus 10.

[0105] In the bag-making and packaging device 10, the distance W3 between the rightmost end 510R of the rightmost support column 510 and the leftmost end 510L of the leftmost support column 510, which particularly affects the width of the space required for the installation of the bag-making and packaging device 10, is smaller than the maximum width W2 of the bag-making and packaging device 10. Therefore, the bag-making and packaging device 10 makes it particularly easy to suppress the width of the space required for the installation of the weighing and packaging system 1 in the left-right direction.

[0106] (4-5) In the bag-making and packaging apparatus 10, in the left-side bag-making and packaging machine 100B, the front row support column 510 (532) on the left side is positioned behind the tube 214 of the former mechanism 210. In the right-side bag-making and packaging machine 100A, the front row support column 510 (532) on the right side is positioned behind the tube 214 of the former mechanism 210.

[0107] In the bag-making and packaging apparatus 10, space is provided to the left front of the left-side bag-making and packaging machine 100B, and to the right front of the right-side bag-making and packaging machine 100A, allowing workers to access equipment such as the former mechanism 210 inside the bag-making and packaging machines 100A and 100B during cleaning and other maintenance. As a result, the bag-making and packaging apparatus 10 achieves high maintainability while keeping the width of the space required for installation of the bag-making and packaging apparatus 10 to a minimum.

[0108] (4-6) In the bag-making and packaging apparatus 10, the two bag-making and packaging machines 100A and 100B have a structure that is substantially symmetrical in the left-right direction. Each of the bag-making and packaging machines 100A and 100B has an opening Op on at least a portion of the side facing the other bag-making and packaging machine 100B and 100A.

[0109] When two bag-making and packaging machines 100A and 100B are installed close together in the left-right direction, it is difficult to access each machine from the side where they are adjacent. As a result, a space that is difficult to clean is likely to be created on the side of each bag-making and packaging machine 100A and 100B that is in close proximity to the other machine.

[0110] However, in this bag-making and packaging device 10, openings Op are formed on opposing surfaces, creating a continuous space from the right end to the left end of the device. With this configuration, for example, by blowing air from the right / left side of the bag-making and packaging machines 100A / 100B located on the right / left side, dirt accumulated on the side where the two bag-making and packaging machines 100A / 100B are close together can be easily moved to the left / right side of the bag-making and packaging machines 100B / 100A located on the left / right side. As a result, this bag-making and packaging device 10 can achieve high cleanability while keeping the width of the installation space to a minimum.

[0111] (4-7) The bag-making and packaging apparatus 10 includes a gap-closing member 420 that is installed between the two bag-making and packaging machines 100A and 100B to close the gap between the machines. The gap-closing member 420 is installed between the first partition plate 250 and the second partition plate 260, or between the top plate and frame 500 that support the metal inspection devices 400 of the two bag-making and packaging machines 100A and 100B.

[0112] This bag-making and packaging device 10 is hygienic because it prevents waste from falling into the gaps between the bag-making and packaging machines 100A and 100B.

[0113] (4-8) The bag-making and packaging apparatus 10 includes, in each of the bag-making and packaging machines 100A and 100B, a first partition plate 250 as an example of a partition plate positioned between the former mechanism 210 and the lateral sealing mechanism 240 in the vertical direction.

[0114] In the bag-making and packaging device 10, the first partition plate 250 is positioned between the former mechanism 210 and the lateral sealing mechanism 240, so that the lateral sealing mechanism 240 is less likely to be soiled by debris such as fragments of the articles P supplied by the combined weighing device 600. Furthermore, in the bag-making and packaging device 10, since the first partition plate 250 positioned between the former mechanism 210 and the lateral sealing mechanism 240 is plate-shaped, it is easy to remove any fragments of articles supplied by the combined weighing device 600 that fall onto the first partition plate.

[0115] Therefore, in this bag-making and packaging apparatus 10, even if the space available for maintenance is reduced by arranging two bag-making and packaging machines 100A and 100B in close proximity on the left and right, the bag-making and packaging apparatus 10 is easier to keep clean.

[0116] (4-9) The weighing and packaging system 1 of the above embodiment comprises the bag-making and packaging device 10 and a combination weighing device 600. The combination weighing device 600 includes two combination weighing machines 610A and 610B joined together substantially symmetrically in the left-right direction, and a base member 690 that supports the combination weighing machines 610A and 610B as a single unit. Each of the combination weighing machines 610A and 610B has a plurality of weighing hoppers 650 arranged along a part of the circumference in a top view, and a discharge chute 670. It weighs the articles P supplied into the weighing hoppers 650 and combines the articles P stored in one or more weighing hoppers 650 selected according to the target weight and discharges them from the discharge chute 670.

[0117] The weighing and packaging system 1 can reduce the width of the space required for its installation.

[0118] (4-10) The weighing and packaging system 1 of the above embodiment includes a stand 700. The stand 700 has a footboard 710 arranged around a base member 690 and a stand frame 720 that supports the footboard 710.

[0119] In the weighing and packaging system 1, maintenance space can be secured around the combined weighing device 600.

[0120] (5) Variant The following shows modifications of the above embodiment. Note that some or all of the modifications may be combined with the above embodiment or other modifications, to the extent that they do not contradict each other.

[0121] (5-1) Variation A In the above embodiment, the support columns 510 of the bag-making and packaging machines 100A and 100B are arranged asymmetrically, but the invention is not limited to this. For example, all support columns 510 whose upper ends are positioned above the lateral sealing mechanism 240 of the bag-making and packaging machines 100A and 100B may be positioned behind the tube 214 of the former mechanism 210. In this case as well, high ease of cleaning can be easily obtained. However, from the viewpoint of support stability, the configuration as in the above embodiment is preferable.

[0122] (5-2) Variation B In the above embodiment, the first partition plate 250, the second partition plate 260, and the gap-closing member 420 were made of separate components, but the embodiment is not limited to this. For example, the first partition plate 250, the second partition plate 260, and the gap-closing member 420 may be made from a single plate component. In this case, it is possible to prevent debris from accumulating at the joints of each component. [Explanation of Symbols]

[0123] 10: Bag making and packaging equipment 100A: Bag making and packaging machine 100B: Bag making and packaging machine 210: Forma mechanism 212: Forma 214: Tube 240: Lateral sealing mechanism 250: First partition plate (partition plate) 300: Film supply unit 420: Gap sealing member 450: Storage compartment 460: Control Unit 462: Circuit board 500: Frame 510: Strut 510R: Rightmost (the rightmost end of the support column located on the far right) 510L: Leftmost (the leftmost support column located on the far left) 600: Combination weighing device 610A: Combination weighing machine 610B: Combination weighing machine 690: Base component 700: Stand 710 :Treadboard 720: Mounting frame F: Film Ft: Tubular film (a film in the shape of a cylinder) Op: Opening P:Goods R: Conveyor path (film transport path) W1: Width of the base member W2: Maximum width of the bag-making and packaging machine W3: Distance [Prior art documents] [Patent Documents]

[0124] [Patent Document 1] Japanese Patent Publication No. 2009-258040

Claims

1. A bag-making and packaging apparatus in which two bag-making and packaging machines are installed side by side, Each bag-making and packaging machine is: A film supply unit located at the rear, A former mechanism located at the front, having a former and a tube, which forms a sheet-like film supplied from the film supply section at the rear into a cylindrical shape, A lateral sealing mechanism is positioned below the former mechanism and laterally seals the top and bottom of the cylindrical film into which the article supplied from above is inserted, A control unit that controls the operation of the film supply unit and the lateral sealing mechanism, Equipped with, Each of the bag-making and packaging machines is a combination weighing device, which is provided with a base member that supports the combination weighing devices as a whole, and is positioned below the discharge chute of one of the corresponding combination weighing devices, which are two combination weighing devices joined symmetrically in the left-right direction in a top view, supplying the articles into a plurality of hoppers arranged along a part of the circumference, and combining and discharging the articles stored in one or more hoppers selected according to a target weight, and which are provided below the discharge chute of one of the combination weighing devices, The maximum width of the bag-making and packaging device when viewed from the front is narrower than the width of the base member. Bag making and packaging equipment.

2. Each of the aforementioned bag-making and packaging machines further comprises a storage section for housing the circuit board of the control unit, The storage section is located behind the former mechanism and the lateral sealing mechanism. The bag-making and packaging apparatus according to claim 1.

3. The storage unit is located below the film transport path of the film supply unit. The bag-making and packaging apparatus according to claim 2.

4. Each of the bag-making and packaging machines has a plurality of upright support columns that constitute a frame enclosing at least a part of the film supply unit, the former mechanism, and the lateral sealing mechanism, The distance between the rightmost end of the rightmost support column and the leftmost end of the leftmost support column of the bag-making and packaging device is smaller than the maximum width of the bag-making and packaging device. The bag-making and packaging apparatus according to claim 1 or 2.

5. Each of the bag-making and packaging machines has a plurality of upright support columns that constitute a frame enclosing at least a part of the film supply unit, the former mechanism, and the lateral sealing mechanism, In the bag-making and packaging machine on the left, the frontmost support column on the left is positioned behind the tube of the former mechanism. In the bag-making and packaging machine on the right, the frontmost support column on the right is positioned behind the tube of the former mechanism. The bag-making and packaging apparatus according to claim 1 or 2.

6. The two bag-making and packaging machines have a structure that is symmetrical in the left-right direction. Each of the bag-making and packaging machines has an opening in at least a portion of the side facing another bag-making and packaging machine. The bag-making and packaging apparatus according to claim 1 or 2.

7. The system further includes a gap-closing member installed between the two bag-making and packaging machines to close the gap between the two bag-making and packaging machines, The bag-making and packaging apparatus according to claim 6.

8. Each of the bag-making and packaging machines has a partition plate positioned between the former mechanism and the lateral sealing mechanism in the vertical direction. The bag-making and packaging apparatus according to claim 1 or 2.

9. A bag-making and packaging apparatus according to claim 1 or 2, The combined weighing device includes two combined weighing machines joined symmetrically in the left-right direction, and a base member that integrally supports the combined weighing machines, each of the combined weighing machines having a plurality of hoppers arranged along a part of the circumference in a top view, and a discharge chute, weighing the articles supplied into the hoppers, and combining the articles stored in one or more hoppers selected according to the target weight and discharging them from the discharge chute, A weighing and packaging system equipped with [specific features / equipment].

10. The frame further comprises a tread plate arranged around the base member and a frame that supports the tread plate. The weighing and packaging system according to claim 9.

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