Bag supply device and continuous bag tape used in same

Abstract

The opening part of the bag can be easily opened during use. The continuous bag belt (10) is provided with a support part (91) which is continuous in the continuous direction (D1), and a storage part (92) which is adjacent to one side of the support part (91) and is repeatedly arranged in the continuous direction (D1). The supporting part (91) is composed of a front cylindrical part (21) and a back cylindrical part (22) which are continuous along the edge of the supporting part (91) side of each containing part (92). The front surface part (11) and the back surface part (12) have a connecting part (32) which is located in the middle of the continuous direction (D1) and is connected to the cylindrical parts (21, 22), and a pair of separating parts (31) which are distributed across both sides of the connecting part (32) and are separated from the cylindrical parts (21, 22). In use, a pair of guide rods (52) of a bag supply device (50) are inserted into openings of tubular parts (21, 22) at the beginning end of a continuous bag tape (10), the tubular parts (21, 22) are supported by the pair of guide rods (52) at a distance from each other, a separation part (31) is separated from a front surface part (11) and a back surface part (12), and an opening part (13) of a front bag (1) is automatically opened.

Description

Technical Field

[0001] The present invention relates to a bag supply device capable of easily opening an opening of a bag when in use, and a bag continuous belt used in the bag supply device. Background Art

[0002] For example, when a seller sells goods in a retail store or a buyer brings goods back, some goods such as fruits, vegetables, fresh fish, and side dishes are put into plastic bags to prevent leaked juice or condensed water from adhering to other goods.

[0003] Such plastic bags are usually prepared in the form of a roll of a continuous belt in which each bag portion is repeated in a continuous direction via a perforated line. When used, the bags are cut one by one and the opening is opened for use.

[0004] However, a general plastic bag continuous belt is only a continuous belt-shaped tube made of polyethylene film, with welded parts as the bottom formed at intervals in its continuous direction, and perforated lines formed along the boundaries of each part serving as the bag. The opposite surface of the opening is in a sealed state due to static electricity, etc., so there is a problem that it is difficult to open the opening.

[0005] In order to solve this problem, various methods have been proposed. For example, Patent Document 1 proposes a bag supply device in which when a bag is cut from a continuous bag belt, the bag is in a state where the opposite surface of the opening is slightly opened. Also, Patent Document 2 proposes a bag in which non-overlapping picking pieces protrude from one sheet and the other sheet of the opposite surface forming the opening.

[0006] These conventional examples are easy to pinch the opening of the bag, and can be easily opened as long as it can be pinched, but there is still a problem that the operation is complicated.

[0007] Prior art literature

[0008] Patent Literature

[0009] Patent Document 1: Japanese Utility Model Registration No. 3226447

[0010] Patent Document 2: Japanese Utility Model Registration No. 3224764 Summary of the invention

[0011] Problems to be solved by the invention

[0012] Therefore, a main object of the present invention is to provide a bag supply device capable of easily opening the opening of a bag when in use, and a bag continuous belt used in the bag supply device.

[0013] Means for solving problems

[0014] A bag supply device that solves the above-mentioned problems and a bag continuous belt used in the bag supply device are as follows.

[0015] <Method 1>

[0016] A bag supply device, which provides bags from a sheet-like continuous bag belt, wherein the continuous bag belt has parts that serve as the bags repeatedly arranged in a continuous direction, characterized in that the continuous bag belt has: a support portion that is continuous in the continuous direction; and a storage portion that is adjacent to one side of the support portion in a direction perpendicular to the continuous direction and is repeatedly arranged in the continuous direction, wherein the storage portion has: a front portion; a back portion that faces the front portion; an opening portion that is arranged at an edge on the support portion side and is connected to a storage space between the front portion and the back portion; and an edge of a bottom portion that is located opposite to the edge of the opening portion. The bag is then wrapped around the bag's outer edges and the edges of the bottom edges are connected to the bag's outer edges by a thread-connected loop that extends from the bag's front edge to the bag's back edge. The bag is continuous and the bag is attached to the bag body, and the bag body is attached to the bag body in an adjacent manner. The bag is detachably connected to the bag body by the front and back tubular portions. The bag is detachably connected to the bag body by the front and back tubular portions. The bag supply device has a pair of guide rods respectively inserted into the front cylindrical portion and the back cylindrical portion of the bag continuous belt, and the pair of guide rods have a pair of front end portions and a pair of main body portions, which are parts continuous with the pair of front end portions and are arranged at intervals, and the front end portion and the main body portion of each guide rod are supported only on the opposite side opposite to the front end portion, and the pair of main body portions respectively have a breaking portion at a position away from the front end portion to break the front cylindrical portion and the back cylindrical portion along their length direction.

[0017] (Effect)

[0018] In the bag supply device, for example, a continuous belt of bags can be pulled out and opened and then cut off as follows. That is, as a preparatory stage, a pair of guide rods are inserted into the openings of the front cylindrical portion and the back cylindrical portion at the starting end of the continuous belt of bags in sequence from the front end to the main body. At this time, the front cylindrical portion and the back cylindrical portion are separated from the front portion and the back portion at least at the separation portion on the starting end side (preferably a pair of separation portions) and are respectively supported by the main body of a pair of guide rods arranged at intervals, so that the opening of the storage portion of the front head is automatically opened at least on the starting end side. Thus, in this state, it is possible to put fingers into the opening of the storage portion of the front head and grab the side portion on the starting end side, so there is no need to pull the front and back portions of the storage portion apart. Next, when the fingers are hooked on the opening of the front storage part (it is better to grab the side) and the front storage part is pulled toward the breaking part along the pair of guide rods, the front cylindrical part and the back cylindrical part are respectively broken along the length direction at the pair of breaking parts, thereby enabling the front storage part and the front cylindrical part and the back cylindrical part connected (continuous or joined) thereto to be separated from the pair of guide rods in an open state. On the other hand, when the front storage part is pulled toward the breaking part, at least the supporting part (the front cylindrical part and the back cylindrical part) is continuous, thereby the subsequent storage part is automatically pulled out in sequence, and a pair of guide rods are automatically inserted into the front cylindrical part and the back cylindrical part from the front end, and the preparation of the subsequent storage part is automatically completed. In order to achieve this content, the front cylindrical part and the back cylindrical part are cut and continuous, and the inner space of the front cylindrical part and the inner space of the back cylindrical part are respectively continuous in the entire range of the continuous direction of the bag continuous belt. The front storage section can be cut off from the subsequent storage section or separated from the subsequent storage section in advance, and the portion of the front cylindrical section and the back cylindrical section connected to the front storage section can be cut off from the portion connected to the subsequent storage section after the pair of guide rods are inserted into the portion connected to the subsequent storage section (for example, after the pair of guide rods are separated). Then, through these cuts, independent bags can be obtained from the bag continuous belt.

[0019] <Method 2>

[0020] In the bag supply device of the first aspect, the pair of main body portions include a pair of enlarged portions whose intervals with each other increase as they are away from the pair of front end portions.

[0021] (Effect)

[0022] When the expansion portion of this method is provided, when the front cylindrical portion and the back cylindrical portion pass through the expansion portion, the mutual distance between the front cylindrical portion and the back cylindrical portion is expanded, thereby automatically opening the opening of the storage portion connected to the front cylindrical portion and the back cylindrical portion, so it is preferred.

[0023] <Third Method>

[0024] In the bag supply device of the first embodiment, the pair of main body parts have: a pair of first parts, which are parts that are respectively continuous with the pair of front end parts and extend at a constant first mutual interval; a pair of expanded parts, which are parts that are respectively continuous with the pair of first parts, and the interval of the pair of expanded parts expands from the first mutual interval to a second mutual interval larger than the first mutual interval as they move away from the first parts; and a pair of second parts, which are parts that are respectively continuous with the pair of expanded parts and extend at a constant second mutual interval by a distance of more than 50% of the width of the bag in a manner away from the expanded parts, and the pair of breaking parts are parts that are respectively continuous with the pair of second parts.

[0025] (Effect)

[0026] In the bag supply device, as the front cylindrical portion and the back cylindrical portion move in the order of the first portion, the enlarged portion, and the second portion, the opening of the storage portion is automatically opened, and the storage portion located in the second portion is maintained in a state of the opening being opened. In particular, by having the first portion with a relatively narrow interval, it is easy to insert a pair of guide rods into the front cylindrical portion and the back cylindrical portion. In addition, in the preparation stage, the storage portion of the front head moves to the second portion, and the opening of the storage portion of the front head is in a state of being greatly opened. Therefore, it is also possible to put the goods etc. into the storage portion of the front head supported by the second portion in this state.

[0027] <Method 4>

[0028] In the bag supply device according to the third aspect, the first portion is a portion extending in the vertical direction, and the second portion is a portion extending in the lateral direction.

[0029] (Effect)

[0030] According to this aspect, the installation area of ​​the bag supply device can be reduced.

[0031] <Method 5>

[0032] In the bag supply device according to any one of the first to fourth aspects, the breaking portion is a portion having a cutting blade protruding from an outer peripheral surface of the guide rod.

[0033] (Effect)

[0034] When the breaking portion is provided by the cutting blade as in this embodiment, the front cylindrical portion and the back cylindrical portion can be easily broken.

[0035] <Sixth Method>

[0036] 4. The bag as claimed in claim 1, wherein the bag is a bag of claim 1, wherein the bag is a bag of claim 20, wherein the bag is a bag of claim 30, wherein the bag is a bag of claim 30, wherein the bag is a bag of claim 30. The inner space is continuous in the entire range of the continuous direction of the bag continuous belt, the part of the front part located at the edge of the opening part has a connecting part located in the middle of the continuous direction and connected to the front cylindrical part, and a pair of separating parts distributed in the entire range on both sides of the connecting part and separated from the front cylindrical part or detachably connected to the front cylindrical part, the part of the back part located at the edge of the opening part has a connecting part located in the middle of the continuous direction and connected to the back cylindrical part, and a pair of separating parts distributed in the entire range on both sides of the connecting part and separated from the back cylindrical part or detachably connected to the back cylindrical part, the adjacent storage parts of the bag continuous belt are cuttable and continuous or the adjacent storage parts of the bag continuous belt are separated, and the front cylindrical part and the back cylindrical part are continuous in a manner that can be cut at the positions corresponding to the pair of adjacent separating parts along the continuous direction.

[0037] (Effect)

[0038] The same effect as the first method is achieved.

[0039] <Seventh Method>

[0040] In the sixth embodiment of the continuous belt of bags, the continuous belt-shaped flexible sheet is folded in a vertical direction perpendicular to the continuous direction to form a first fold as the edge of the bottom, and the end portions of the portion on one side and the portion on the other side opposite to the first fold are respectively folded back toward the first fold side to form a second fold and a folded back portion, the front portion and the back portion are respectively formed by the portion between the first fold and the folded back portion in the portion on one side and the portion on the other side, and the folded back portion and the portion facing the folded back portion in the portion on one side and the portion on the other side are joined to the second fold at a distance to form the front cylindrical portion and the back cylindrical portion, respectively. shaped portion, seams or easy-to-cut portions are respectively formed at the positions of the pair of separation portions in the portion on one side serving as the front portion and at the positions of the pair of separation portions in the portion on the other side serving as the back portion, and in the continuous strip-shaped flexible sheet forming the first fold, the front tubular portion and the back tubular portion, a first easy-to-cut portion for cutting the front tubular portion and the back tubular portion and a second easy-to-cut portion for cutting the storage portion are formed at intervals corresponding to the width of the bag in the continuous direction, and on both sides of the second easy-to-cut portion in the continuous direction, the opposing surfaces of the portion on one side and the portion on the other side are continuously joined in the vertical direction.

[0041] (Effect)

[0042] The bag continuous belt of this embodiment has a simple structure without wasting materials.

[0043] <Method 8>

[0044] In the continuous belt of bags according to the sixth or seventh aspect, the length of the separation portion in the continuous direction is 1 / 5 to 1 / 3 times the width of one of the storage portions.

[0045] (Effect)

[0046] The length of the separation portion determines the opening limit of the bag of the bag supply device described later, and the length of the connection portion as a portion other than the separation portion affects the shape stability of the bag supported by the guide rod. In addition, each bag after being cut from the above-mentioned bag continuous belt has a front cylindrical portion and a back cylindrical portion that are broken in the continuous direction as a rope-shaped protruding portion, but the length of the rope-shaped protruding portion is determined by the length of the separation portion, and when it has a sufficient length, it can be used to tie the opening of the bag. Therefore, from these viewpoints, the length of the separation portion in the continuous direction of the bag continuous belt is preferably within the range of this embodiment.

[0047] <Method 9>

[0048] In the bag continuous belt of any one of the sixth to eighth aspects, the front tubular portion and the back tubular portion are continuous so as to be cuttable at a position corresponding to the separation portion on the front side of each storage portion and close to the connection portion.

[0049] (Effect)

[0050] In the bag continuous belt, the portion of the front tubular portion and the back tubular portion that is not connected to the storage portion does not remain at a position closer to the front side than the connection portion, or even if it remains, it is very short, so that when the front tubular portion and the back tubular portion are pressed toward the breaking portion by pulling the storage portion in the bag supply device to break them, force can be effectively applied to the front tubular portion and the back tubular portion. As a result, the breaking operation becomes easy.

[0051] Effects of the Invention

[0052] According to the present invention, there are advantages such as being able to easily open the opening of the bag when using it. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 It is a front view of the continuous belt of bags in an unfolded state. In addition, the back side is shown symmetrically with the front side.

[0054] Figure 2 is along Figure 1 A cross-sectional view of line 2-2.

[0055] Figure 3 is along Figure 1 Cross-sectional view along line 3-3.

[0056] Figure 4 This is the front view of the bag.

[0057] Figure 5 It is a front view of the continuous belt of bags in an unfolded state. In addition, the back side is shown symmetrically with the front side.

[0058] Figure 6 It is a front view of the continuous belt of bags in an unfolded state. In addition, the back side is shown symmetrically with the front side.

[0059] Figure 7 (a) is a three-dimensional view of a continuous belt of bags in a roll shape. Figure 7 (b) is a three-dimensional view of a continuous belt of bags that are folded back and stacked.

[0060] Figure 8 It is a perspective view of the bag supply device.

[0061] Fig. 9 It is a perspective view showing the bag supply device in a use state.

[0062] Fig.10 It is a perspective view of the bag supply device.

[0063] Fig.11 It is a front view showing the bag supply device in a use state.

[0064] Fig.12 It is a perspective view of the bag supply device.

[0065] Fig.13 It is a perspective view of the bag supply device.

[0066] Fig.14 It is a perspective view of the bag supply device.

[0067] Fig.15 It is a front view of the continuous belt of bags in an unfolded state. In addition, the back side is shown symmetrically with the front side.

[0068] Fig.16 It is a perspective view showing the bag supply device in a use state.

[0069] Fig.17 (a) is Fig.10 and Fig.11 A right side view of the bag feeding device is shown, Fig.17 (b) is a right side view of another bag supply device. DETAILED DESCRIPTION

[0070] Hereinafter, the above-mentioned bag supply device and an example of a bag continuous belt used in the bag supply device will be described in detail with reference to the accompanying drawings. In addition, the joining described below can be performed by welding such as heat sealing or ultrasonic sealing, and can also be performed by adhesives such as hot melt adhesives. The reference numerals W1 and W2 in the figure represent the welding parts.

[0071] <Example of bag continuous belt>

[0072] Figure 1 to Figure 4An example of a continuous bag belt 10 in which a sheet-like portion of the bag 1 is repeatedly arranged in the continuous direction D1 is shown. The continuous bag belt 10 has a support portion 91 that is continuous in the continuous direction D1, and a storage portion 92 that is adjacent to one side of the support portion 91 in a direction D2 perpendicular to the continuous direction D1 and is repeatedly arranged in the continuous direction D1, and each storage portion 92 has a front portion 11, a back portion 12 that faces the front portion 11, an opening portion 13 that is provided at the edge of the storage portion 92 on the support portion 91 side and communicates with a storage space 16 between the front portion 11 and the back portion 12, an edge of a bottom portion 14 that is located on the opposite side of the storage portion 92 opposite to the edge of the opening portion 13, and a side edge 15 that extends from both ends of the edge of the opening portion 13 to both ends of the edge of the bottom portion 14. The support portion 91 is composed of a front cylindrical portion 21 and a back cylindrical portion 22, wherein the front cylindrical portion 21 is continuous along the edge of the support portion 91 side of the front portion 11 of each storage portion 92, and the back cylindrical portion 22 is continuous along the edge of the support portion 91 side of the back portion 12 of each storage portion 92. As can be seen from this, the edge of the opening portion 13 is composed of the edge of the front cylindrical portion 21 side of the front portion 11 and the edge of the back cylindrical portion 22 side of the back portion 12. The inner space 21i of the front cylindrical portion 21 and the inner space 22i of the back cylindrical portion 22 are respectively continuous over the entire range of the continuous direction D1 of the bag continuous belt 10. Furthermore, the portion of the front portion 11 located at the edge of the opening 13 includes: a connection portion 32 located in the middle of the continuous direction D1 and connected to the front cylindrical portion 21; and a pair of separation portions 31, which are distributed over the entire range on both sides of the connection portion 32 (i.e., as shown in the figure, they are continuous from both ends of the connection portion 32 in the continuous direction D1 to the side edges 15 respectively) and are separated from the front cylindrical portion 21. Similarly, the portion of the back portion 12 located at the edge of the opening 13 includes: a connection portion 32 located in the middle of the continuous direction D1 and connected to the back cylindrical portion 22; and a pair of separation portions 31, which are distributed over the entire range on both sides of the connection portion 32 (i.e., as shown in the figure, they are continuous from both ends of the connection portion 32 in the continuous direction D1 to the side edges 15 respectively) and are separated from the back cylindrical portion 22. In the bag continuous belt 10 , the adjacent storage portions 92 are cutably connected, and the front tubular portion 21 and the back tubular portion 22 are cutably connected at positions corresponding to a pair of separation portions 31 adjacent to each other in the continuous direction D1 .

[0073] The bag continuous belt 10 can be formed of a flexible sheet. The flexible sheet is not particularly limited, and in addition to polyolefin films such as polyethylene films (HDPE, LDPE, LLPE, etc.) or polypropylene films (OPP, CPP, etc.), synthetic resin films such as polyvinyl chloride (PVC) films can also be preferably used, and paper can also be used. The thickness of the flexible sheet is not particularly limited, and in the case of synthetic resin films, it can be about 0.01 mm to 0.1 mm.

[0074] The front cylindrical portion 21 and the rear cylindrical portion 22 may be Figure 2 As shown in (a) of FIG. 1 , the flexible sheet forming the front portion 11 and the back portion 12 is folded inward (or outward) at the edge of the opening 13 and the lower end of the folded portion is joined to the opposite surface, and can also be formed as shown in FIG. Figure 2 As shown in (b), the lower end portions of the tubular bodies 21t and 22t independently manufactured from the storage portion 92 are joined along the upper edges (edges of the opening 13) of the front and back portions 11 and 12 of the storage portion 92. In addition, Figure 2 The joining shown in (a) is formed by welding the flexible sheet to form the welded portion W1, but it can also be changed to a joining using an adhesive. Figure 2 Although the joining in the example shown in (b) is performed by means of the adhesive B1, it may also be performed by welding the flexible sheet.

[0075] There is no particular limitation on the inner diameters of the front cylindrical portion 21 and the back cylindrical portion 22 as long as a pair of guide rods 52 of the bag supply device 50 described later can be inserted, but preferably, they can be inserted with play, for example, the inner dimension y2 in the flat state can be about 5 mm to 30 mm.

[0076] A pair of separation parts 31 can be as follows Figure 1 , Figure 3 as well as Figure 4 As shown in FIG. 1 , a slit 40 (having no vertical width) is formed along a portion of the front portion 11 located at the edge of the opening 13 and a portion of the back portion 12 located at the edge of the opening 13, or as shown in FIG. Figure 5 As shown in the figure, the slot 40 or the punched hole 41 is formed to extend along them. In these cases, the slot 40 or the punched hole 41 is located at the boundary between the front part 11 and the front cylindrical part 21 and the boundary between the back part 12 and the back cylindrical part 22, so that the edge of the opening 13 coincides with the edge of the slot 40 or the punched hole 41 on the front part 11 and the back part 12. Figure 2 In a case where separately manufactured cylindrical bodies 21t, 22t are joined to the front portion 11 and the back portion 12 as shown in (b) to form the front cylindrical portion 21 and the back cylindrical portion 22, the separation portion 31 and the connection portion 32 may be provided in the following manner: the cylindrical bodies 21t, 22t are only joined to the portions of the front portion 11 and the back portion 12 serving as the connection portion 32, and are not joined to the portions serving as the separation portion 31.

[0077] Furthermore, the separation unit 31 may also be Figure 6As shown in the figure, the following method is used to form an easy-to-cut portion 42 such as a perforated line or a fragile portion along the lower edge of the portion of the front portion 11 located at the edge of the opening 13 and the portion of the back portion 12 located at the edge of the opening 13, and the easy-to-cut portion 42 is cut in advance or when the opening 13 of the bag 1 is opened. Figure 2 In a case where separately manufactured tubular bodies 21t and 22t are joined to the front portion 11 and the back portion 12 as shown in (b) to form the front tubular portion 21 and the back tubular portion 22, the separation portion 31 may be provided in the following manner: when these are joined, only the portion serving as the separation portion 31 is weakly joined in a peelable manner (the other portions are strongly joined in a manner that prevents them from being peeled off), and the weakly joined portion is peeled off in advance or when the opening 13 of the bag 1 is opened.

[0078] The dimension x2 of the separation portion 31 in the continuous direction of the bag continuous belt 10 can be set appropriately, but the dimension x2 of the separation portion 31 will determine the opening limit of the bag 1 of the bag supply device described later, and the length of the connection portion 32 will affect the shape stability of the bag 1 supported by the guide rod. Fig. 9 As shown in the figures, each bag 1 after being cut from the bag continuous belt 10 has the front cylindrical portion 21 and the back cylindrical portion 22 broken in the continuous direction D1 as the rope-shaped protruding portion, but the length of the rope-shaped portion is determined by the length of the separation portion 31, and when it has a sufficient length, it can be used to tie the opening 13 of the bag 1. Therefore, from these viewpoints, the dimension x2 of the separation portion 31 in the continuous direction of the bag continuous belt 10 is preferably about 1 / 5 to 1 / 3 times the width x1 of one storage portion 92.

[0079] Each bag 1 constituting the bag continuous belt 10 can be in any appropriate shape as long as it can maintain the continuity of the front cylindrical portion 21 and the back cylindrical portion 22 as described above and has a pair of separation portions 31 and a connection portion 32, but it is preferred that at least the storage portion 92 (front portion 11 and back portion 12) is square or rectangular in shape like a bag generally called a plastic bag or a vinyl bag in a flat state. The overall shape of each bag 1 varies depending on whether the position of the first easy-to-cut portion 43a for cutting the support portion 91 and the position of the second easy-to-cut portion 43b for cutting the storage portion 92 are aligned or offset in the continuous direction D1. In the former case, as shown in FIG. Figure 4 As shown, the overall shape of each bag 1 is a shape in which the storage portion 92 is simply extended in the vertical direction D2. In the latter case, as shown in FIG. Fig.16 As shown, the support portion 91 remaining along the opening 13 of the storage portion 92 is shaped to protrude toward one side in the continuous direction D1.

[0080] The structure of each storage portion constituting the bag continuous belt 10 is not particularly limited, but when a structure such as a side seal bag is adopted, the bag continuous belt 10 can be manufactured particularly simply and without wasting materials, so it is preferred. Figure 1 to Figure 4 In the bag continuous belt 10 shown, the continuous belt-like flexible sheet is folded in a vertical direction perpendicular to the continuous direction to form a first fold C1 as the edge of the bottom 14 of each bag 1, and the end portion on the opposite side of the first fold C1 in the portion on one side and the portion on the other side with the first fold C1 as the boundary is folded back toward the first fold C1 to form a second fold C2 and a folded portion FP, and the front portion 11 and the back portion 12 are formed by the portion between the first fold and the folded portion. Furthermore, the folded portion FP in the portion on one side and the portion on the other side and the portion facing the folded portion FP are welded together with a gap from the second fold C2 to form a welded portion W1, a front tubular portion 21, and a back tubular portion 22, respectively. Furthermore, seams 40 (or may be formed as shown in the example) are formed at the positions of a pair of separation portions 31 as the front portion 11 in the portion on one side and a pair of separation portions 31 as the back portion 12 in the portion on the other side. Figure 6 As shown, it is an easy-to-cut portion 42 such as a perforated line). Furthermore, in the continuous band-shaped flexible sheet formed with the first fold C1, the front tubular portion 21, and the back tubular portion 22, a first easy-to-cut portion 43a for cutting the front tubular portion 21 and the back tubular portion 22 and a second easy-to-cut portion 43b for cutting the storage portion 92 are formed at intervals corresponding to the width of the bag 1 in the continuous direction, and on both sides of the second easy-to-cut portion 43b in the continuous direction, the opposing surfaces of the portion on one side and the portion on the other side are continuously joined along the second easy-to-cut portion 43b (forming a welded portion W2 in the example shown in the figure). As can be seen from this description, the above-mentioned bag continuous band 10 can be formed by simply adding the forming steps (folding step and joining step) of the front tubular portion 21 and the back tubular portion 22 and the forming steps of the seam 40 or the easy-to-cut portion 42 to the existing side seal bag manufacturing technology.

[0081] In the bag continuous belt 10, as long as the front tubular portion 21 and the back tubular portion 22 are continuous in a manner that can be cut through the first easy-to-cut portion 43a such as a perforated line or a fragile portion at a position corresponding to a pair of separation portions 31 adjacent to each other along the continuous direction D1, it can be as follows Figure 1 , Figure 6 As shown, the storage portion 92 is cuttable and continuous via the second easy-to-cut portion 43b, or Figure 5As shown, a part or all of the storage part 92 is separated in advance by the side edge seam 44. In order to form a bag continuous belt 10 in which bags 1 of the same size and shape are continuously formed, the size of the storage part 92 in the continuous direction may be constant, and the interval between the first easy-to-cut portion 43a of the front cylindrical part 21 and the back cylindrical part 22 may be equal to the size x1 of the storage part 92 in the continuous direction.

[0082] The position of the first easy-to-cut portion 43a for cutting the support portion 92 (the front cylindrical portion 21 and the back cylindrical portion 22) can be as follows: Figure 1 and Fig. 9 As shown in the figure, the position of the second easy-to-cut portion 43b for cutting the storage portion is consistent in the continuous direction, and it can also be as shown in the figure. Fig.15 and Fig.16 In the latter case, when the position of the first easy-to-cut portion 43a is a position corresponding to the separation portion 31 on the front side of each storage portion 92 and close to the connection portion 32, the portion of the cylindrical portions 21 and 22 that is not connected to the storage portion 92 will not remain at a position closer to the front side than the connection portion 32, or even if it remains, it will be very short, so that in the bag supply device 50 described later, when the front cylindrical portion 21 and the back cylindrical portion 22 are pressed toward the breaking portion 64 by pulling the storage portion 92 to break them, force can be effectively applied to the front cylindrical portion 21 and the back cylindrical portion 22. Therefore, the breaking operation becomes easy. From this point of view, it is particularly preferred that the first cut-off portion 43a is located at a position corresponding to the separation portion 31 on the front side of each storage portion 92 and at the end on the side of the connection portion 32.

[0083] Although not shown, individual bags may be manufactured and then connected in a cuttable manner to manufacture a continuous bag belt. In this case, each bag may have a structure such as a bottom seal bag, a three-way seal bag, a gusset bag, or a stand-up bag.

[0084] The continuous belt 10 of bags can be Figure 7 As shown in (a) of FIG. 1 , a roll is wound around a cylindrical core formed of paper or the like, or as shown in FIG. Figure 7 As shown in (b), the bags 1 are alternately folded back at a constant interval in the continuous direction and stacked.

[0085] In order to facilitate the breaking of the front cylindrical portion 21 and the back cylindrical portion 22 along the length direction described later, or to enable the breaking without the cutting blade described later, it is also possible to Figure 5 As shown, an easily breakable portion 45 such as a perforated line or a fragile portion is formed along a continuous direction in the front tubular portion 21 and the back tubular portion 22. The easily breakable portion 45 is preferably formed at or near the edge of the front tubular portion 21 and the back tubular portion 22 on the opposite side to the bottom 14 of the bag 1, but is not limited thereto.

[0086] <Example of bag supply device>

[0087] Figure 8 An example of a bag supply device 50 for supplying bags 1 from the above-mentioned bag continuous belt 10 is shown. The bag supply device 50 has a pair of guide rods 52 respectively inserted into the front cylindrical portion 21 and the back cylindrical portion 22 of the bag continuous belt 10, and the pair of guide rods 52 have a pair of front end portions 65 and a pair of main body portions 60, the pair of main body portions 60 are portions that are respectively continuous with the pair of front end portions, and are provided at intervals, and the front end portion 65 and the main body portion 60 of each guide rod 52 are supported only on the opposite side opposite to the front end portion, and the pair of main body portions have a breaking portion 64 that breaks the front cylindrical portion 21 and the back cylindrical portion 22 along the length direction at a position away from the front end portion.

[0088] In the bag supply device 50, it is possible to Fig. 9As shown in the figure, after the bag continuous belt 10 is pulled out and opened, one sheet is cut. That is, as a preparatory stage, a pair of guide rods 52 are inserted into the openings of the front cylindrical portion 21 and the back cylindrical portion 22 at the starting end of the bag continuous belt 10 in sequence from the front end portion 65 to the main body portion 60. At this time, the front cylindrical portion 21 and the back cylindrical portion 22 are separated from the front portion 11 and the back portion 12 at least at the separation portion 31 on the starting end side (preferably both of the pair of separation portions 31), and are respectively supported by the main body portion 60 of the pair of guide rods 52 set at intervals, so that the opening portion 13 of the storage portion 92 at the front head becomes a state of automatically opening at least on the starting end side. Therefore, in this state, it is possible to put a finger into the opening portion 13 of the storage portion 92 at the front head and grab the side portion on the starting end side, so there is no need to pull the front portion 11 and the back portion 12 of the storage portion 92 apart. Next, when the finger is hooked on the opening 13 of the front storage section 92 (it is better to grasp the side), and the front storage section 92 is pulled toward the breaking section 64 side (in the direction indicated by the double-dashed arrow in the figure) along the pair of guide rods 52, the front cylindrical section 21 and the back cylindrical section 22 are respectively broken along the length direction at the pair of breaking sections 64, thereby enabling the front storage section 92 and the front cylindrical section 21 and the back cylindrical section 22 connected (continuous or joined) thereto to be separated from the pair of guide rods 52 in an open state. On the other hand, when the front storage section 92 is pulled toward the breaking section 64 side, at least the support section 91 (the front cylindrical section 21 and the back cylindrical section 22) is continuous, thereby the subsequent storage section 92 is automatically pulled out in sequence, and the pair of guide rods 52 are automatically inserted into the front cylindrical section 21 and the back cylindrical section 22 from the front end 65, and the preparation of the subsequent storage section 92 is automatically completed. To achieve this, the front cylindrical portion 21 and the back cylindrical portion 22 are cut and continuous, and the inner space 21i of the front cylindrical portion 21 and the inner space 22i of the back cylindrical portion 22 are respectively continuous over the entire range of the continuous direction D1 of the bag continuous belt 10. The front storage portion 92 can be cut from the subsequent storage portion 92 or separated from the subsequent storage portion 92 in advance, and the portion of the front cylindrical portion 21 and the back cylindrical portion 22 connected to the front storage portion 92 can be cut from the portion connected to the subsequent storage portion 92 after the pair of guide rods 52 are inserted into the portion connected to the subsequent storage portion 92 (for example, after the portion connected to the front storage portion 92 is broken and separated from the pair of guide rods 52). Then, through these cuts, independent bags 1 can be obtained from the bag continuous belt 10.

[0089] The cross section of the guide rod 52 is preferably circular, but may also be any shape such as a polygon or star. The cross-sectional area of ​​the guide rod 52 may also vary, for example, being thicker in some parts than in other parts. In order to reduce or increase the friction of the outer peripheral surface of the guide rod 52 relative to the inner peripheral surface of the front cylindrical portion 21 and the back cylindrical portion 22, the guide rod 52 may be smoothed or roughened by surface treatment such as painting, electroplating, and machining. The raw material of the guide rod 52 may be appropriately set, but it is preferably a high-rigidity raw material that is not easily plastically deformed by the force applied by the aforementioned movement operation of the bag continuous belt 10, and in order to smoothly perform the aforementioned movement operation of the bag continuous belt 10, it is preferably elastic to a certain extent.

[0090] The bag supply device 50 preferably has a storage unit 51 for the bag continuous belt 10. The storage unit 51 is not particularly limited as long as it can sequentially feed the bag continuous belt 10 along its continuous direction and provide it to the front end portion 65 of the pair of guide rods 52. Figure 7 When the bag continuous belt 10 as shown in (a) is a roll wound on a cylindrical core, it can be as follows Fig. 9 As shown in FIG. 1 and FIG. 2 , the storage unit 51 includes a rotation support shaft 51a inserted into the opening of the cylindrical core 10c, and is configured to support the reel in a manner that can rotate in the circumferential direction by the rotation support shaft 51a. The direction of the rotation support shaft 51a can be appropriately set, such as Fig. 9 As shown, it is set to a direction that matches the moving posture of the bag continuous belt 10 (in the example of the figure, it is longitudinal), or as Fig.10 As shown, in order to make the bag supply device 50 compact, it is set to be perpendicular to the moving direction of the bag continuous belt 10 (in the example of the figure, it is horizontal). Figure 7 In the case of a stacked object as shown in (b), the storage unit 51 may have a tray (not shown) for storing the stacked objects. These rotation support shafts or trays may be formed by extending the rods constituting the pair of guide rods 52. Furthermore, the storage unit 51 may be configured as another part independent of the pair of guide rods 52. In order to make the bag supply device 50 compact, it is preferred that Fig.10 As shown, the storage portion 51 is disposed below the main body portion 60 and the front end portion 65 , but the present invention is not limited thereto.

[0091] When the main body 60 is Figure 8 and Fig.10 When there is an expansion portion 62 whose mutual spacing increases as they move away from the front end portion 65 as in the example shown, when the front cylindrical portion 21 and the back cylindrical portion 22 pass through the expansion portion, the mutual spacing between the front cylindrical portion 21 and the back cylindrical portion 22 increases, thereby automatically opening the opening portion 13 of the storage portion 92 connected to the front cylindrical portion 21 and the back cylindrical portion 22, and therefore it is preferred.

[0092] As a preferred example of the main body 60, Figure 8 and Fig.10 As shown, it is preferred that the bag 1 has: a pair of first portions 61, which are portions that are respectively continuous with a pair of front end portions 65 and extend at a constant first mutual interval 61d; a pair of enlarged portions 62, which are portions that are respectively continuous with the pair of first portions, and the interval of the pair of enlarged portions 62 expands from the first mutual interval 61d to a second mutual interval 63d larger than the first mutual interval 61d as the distance away from the first portion 61 increases; and a pair of second portions 63, which are portions that are respectively continuous with the pair of enlarged portions 62 and extend at a constant second mutual interval 63d away from the enlarged portions 62 by a distance of more than 50% (more preferably more than 80%, particularly preferably more than 100%) of the width of a bag 1, and the breaking portion 64 is a portion that is respectively continuous with the pair of second portions 63. In the bag supply device 50, as the front cylindrical portion 21 and the back cylindrical portion 22 move in the order of the first portion 61, the enlarged portion 62, and the second portion 63, the opening 13 of the storage portion 92 is automatically opened, and the storage portion 92 located in the second portion 63 is maintained in a state where the opening 13 is opened. In particular, by having the first portion 61 with a relatively narrow interval, it is easy to insert a pair of guide rods 52 into the front cylindrical portion 21 and the back cylindrical portion 22. In addition, in the preparation stage, the front storage portion 92 moves to the second portion 63, and the opening 13 of the front storage portion 92 is in a state where the opening 13 is greatly opened. Therefore, even in this state, commodities and the like can be placed in the front storage portion 92 supported by the second portion 63.

[0093] You can Figure 8 The example shown, Fig.10 and Fig.17 As shown in the example of (a), at least the portion from the front end portion 65 to the breaking portion 64 of the pair of guide rods 52 is plane-symmetrical (symmetric with respect to a plane that is a set of points with equal shortest distances to the pair of guide rods 52, and in the example of the figure, symmetric with respect to a vertical plane including the pulling direction at the time of breaking). However, depending on the position of the support portion 91 of the bag continuous belt 10 of the storage portion 51, in the case of Fig.17 When the front end portion 65 is biased toward the support portion 91 as shown in (b), the guide rod 52 can be smoothly inserted into the front cylindrical portion 21 and the back cylindrical portion 22. Moreover, it is preferred that the length from the front end portion 65 to the break portion 64 of the guide rod 52 on one side is equal to the length from the front end portion 65 to the break portion 64 of the guide rod 52 on the other side, but they may not be equal.

[0094] In addition, a pair of first parts 61 and a pair of second parts 63 extending at a constant interval from each other include not only a case where the first part 61 and the second part 63 extend in a straight line like the second part 63 in the illustrated example, but also a case where they extend in a curved shape such as an arc like the portion located on the side of the front end portion 65 in the first part 61 in the illustrated example.

[0095] When the width of the separation portion 31 is α, the inner dimension y2 of the front cylindrical portion 21 and the back cylindrical portion 22 in the flat state is β, and the diameter of the guide rod 52 in the spacing direction of the pair of guide rods 52 is γ, the mutual spacing of the pair of guide rods 52 when each storage portion 92 of the bag continuous belt 10 is opened to the maximum is approximately (2α+2β)-2γ. Therefore, the mutual spacing of the pair of guide rods 52 of the main body 60 is preferably less than (2α+2β)-2γ, and the same applies to the second mutual spacing 63d. In addition, when the lower limit of the mutual spacing of the pair of guide rods 52 of the main body 60 is 2 cm, more preferably 3 cm, it is easy to hook fingers on the open storage portion 92, so it is preferred, and when it is 5 cm, it is easy to put the goods and the like into the storage portion 92 supported by the main body 60, so it is preferred. This lower limit is also the same for the second mutual spacing 63d.

[0096] The mutual spacing between the pair of front end portions 65 and the first mutual spacing 61d only need to be smaller than the second mutual spacing 63d. However, in order to easily insert the pair of guide rods 52 into the front cylindrical portion 21 and the back cylindrical portion 22 that are close to each other in the flat bag continuous belt 10, it is preferred that the mutual spacing between the pair of front end portions 65 and the first mutual spacing 61d are smaller. The mutual spacing between the pair of front end portions 65 may be less than the first mutual spacing 61d or may be greater than the first mutual spacing 61d. In the case where the guide rods 52 have an elasticity that allows them to be easily pulled away from the pair of front end portions 65, the pair of front end portions 65 may be as shown in FIG. Fig.13 As shown in the example, the first mutual interval 61d may be larger than 2β-2γ and less than 1 / 2 of the second mutual interval 63d.

[0097] In order to facilitate the insertion of a pair of guide rods 52 into the front cylindrical portion 21 and the back cylindrical portion 22, or to prevent damage to the cylindrical portions 21 and 22, the front end portion 65 can be formed into a spherical or spindle shape as shown in the example shown in the figure by installing a front end protection portion such as a cover at the front end of the pair of guide rods 52.

[0098] The main body 60 may be Figure 8 Although the embodiment shown in the figure is formed to pass through the same plane, it is also possible to form a part (such as the first part 61, the enlarged part 62, the second part 63, etc.) to pass through different planes or curved surfaces. Fig.10 and Fig.11As shown, when the first portion 61 is a portion extending in the up-down direction and the second portion 63 is a portion extending in the transverse direction, the installation area of ​​the bag supply device 50 can be reduced, so it is preferred. In this case, the expanded portion 62 may also be a portion extending in the up-down direction, or a portion extending in the transverse direction (horizontal direction), but when it is a portion that changes direction in a curved shape from the up-down direction to the transverse direction as in the example shown in the figure, it will become a more compact installation area, so it is preferred. Moreover, in this case, the direction of the breaking portion 64 is not particularly limited, but when it is a portion extending in the same direction as the second portion 63 (transversely in the example shown in the figure), the operation becomes easy, so it is preferred. Furthermore, in the case where the second portion 63 extends in the transverse direction, when it is as shown in the example shown in the figure, the second portion 63 is preferably provided in a horizontal direction. Fig.11 As shown in the example, it is preferred that the step is provided so that the second portion 63 is lower than the first portion 61, because the bag continuous belt 10 is not easy to retreat. Of course, the directions of the parts are not limited to this, and although not shown in the figure, they can be appropriately changed, for example, the first portion 61 extends in the horizontal direction, and the second portion 63 extends in the upward direction.

[0099] The main body 60 may also be Fig.12 As shown in FIG. 6 , the main body 60 has a first portion 61 and a broken portion 64, but does not have an enlarged portion 62 and a second portion 63. Fig.13 As shown in FIG. 1 , the main body 60 has an enlarged portion 62 and a broken portion 64, but does not have the first portion 61 and the second portion 63. Fig.14 As shown, the second portion 63 and the break portion 64 are included, but the first portion 61 and the enlarged portion 62 are not included.

[0100] The length 61L of the first portion 61 and the length 62L of the expanded portion 62 can be appropriately set, and are each preferably 25% or more of the width x1 of one storage portion 92 , more preferably 50% or more, and particularly preferably 80% or more.

[0101] When the breaking portion 64 is a portion having a cutting knife protruding from the outer peripheral surface of the guide rod 52 as in the example shown in the figure, it is possible to easily break the front cylindrical portion 21 and the back cylindrical portion 22, so it is preferred. However, the breaking portion 64 may also be a portion that does not have a cutting knife but uses force to break the front cylindrical portion 21 and the back cylindrical portion 22. For example, it may be that a curved portion with a continuous direction change of 90 degrees to 180 degrees is formed on the main body 60 (equivalent to the state where the cutting knife in the example shown in the figure is omitted), and the front cylindrical portion 21 and the back cylindrical portion 22 are hooked on the curved portion to tear them apart.

[0102] The pair of guide rods 52 may be supported in any manner as long as the front end portion 65 and the main body portion 60 are supported only on the side opposite to the front end portion 65 (i.e., the front end portion 65 and the main body portion 60 are free portions that are not fixed and can be inserted into the front cylindrical portion 21 and the back cylindrical portion 22 from the front end portion 65). For example, when the bag supply device 50 is placed on a workbench or a working table, the bag supply device 50 may be configured to include a base portion 54 and a support column portion 53 extending upward from the base portion 54, and the support column portion 53 cantilever supports a portion that continues from the main body portion 60 to the side opposite to the front end portion 65, so that the front end portion 65 and the main body portion 60 of each guide rod 52 are suspended above the base portion 54 and held.

[0103] Furthermore, the bag supply device 50 may be provided on the side of a wall or furniture or the like. Fig.12 As shown, the bag supply device 50 is constructed as follows: a wall mounting portion 55 having a screw fixing hole 56 is provided, and the wall mounting portion 55 cantilever supports the portion continuous from the main body 60 to the opposite side opposite to the front end portion 65, so that the front end portion 65 of each guide rod 52 and the main body 60 are suspended above the ground or the work surface and maintained.

[0104] The above-mentioned base portion 54, support portion 53, wall mounting portion 55, and storage portion 51 may be formed by extending the rod material constituting a pair of guide rods 52 from the main body portion 60 to the opposite side opposite to the front end portion 65 as shown in the example shown in the figure, or the base portion 54, support portion 53, and wall mounting portion 55 (not shown in the figure) may be formed independently of the guide rod 52, and the portion of the guide rod 52 that is continuous from the main body portion 60 to the opposite side opposite to the front end portion 65 may be fixed to the support portion 53 or the wall mounting portion 55.

[0105] In the bag supply device 50, as long as the bag continuous belt 10 can be moved, the width of the passage or space for movement is not particularly limited, but it is preferable that a passage or space longer than the length of the storage section 92 is ensured on the side of the surface that is a collection of line segments connecting a pair of guide rods 52 at the shortest distance, and the passage or space extends to the front of the break section 64. More specifically, when the bag continuous belt 10 moves in a state where the storage section 92 (front section 11 and back section 12) is not supported as shown in the example, the storage section 92 is in a posture of hanging down due to its own weight supported by the support section 91 (cylindrical sections 21, 22). Therefore, when at least the second section 63 and the rear section of the main body 60 extend in the lateral direction as shown in the example, it is preferable that a space longer than the length of the storage section 92 is ensured below the portion extending in the lateral direction, and the space of the height extends to the front of the break section 64. Furthermore, in order to facilitate the breaking operation of the breaking portion 64 , it is preferable that a space extending from the main body 60 to before the breaking portion 64 is ensured to be larger than the width of one bag in the pulling direction of the bag continuous belt 10 .

[0106] exist Figure 8 and Fig. 9 In the example shown, the storage section 51, the front end section 65, the first portion 61, the enlarged portion 62, the second portion 63, and the breaking portion 64 are arranged in a row in the lateral direction, and a moving space for the bag continuous belt 10 is ensured below the portion from the front end section 65 to the breaking portion 64 and to the side of the breaking portion 64. The bag continuous belt 10 pulled out from the storage section 51 located to the side of the front end section 65 moves from the front end section 65 to the breaking portion 64 in a state of hanging from the pair of guide bars 52, and is pulled out to the side of the breaking portion 64, thereby breaking the cylindrical portions 21 and 22.

[0107] On the other hand, Fig.10 and Fig.11 In the example shown, the storage section 51 is arranged at the lower part, the front end section 65 and the first section 61 are arranged at one side, the enlarged section 62 is arranged at the corner from one side to the upper part, and the second section 63 and the breaking section 64 are arranged at the upper part, and the portion surrounded by them and the side of the breaking section 64 are ensured as a moving space for the bag continuous belt 10. The bag continuous belt 10 pulled out from the storage section 51 located at the lower part rises along the front end section 65 and the first section 61, and after changing the direction at the enlarged section 62, moves to the breaking section 64 in the lateral direction while hanging from the second section 63, and is pulled out to the side of the breaking section 64, thereby breaking the cylindrical sections 21 and 22.

[0108] The bag supply device 50 shown in the figure does not include a housing covering the guide rod 52, a support portion supporting the guide rod 52, and a storage portion 51 for the bag continuous belt 10, but may include such a housing (not shown).

[0109] Industrial Applicability

[0110] The present invention can be applied to a bag supply device as in the above-mentioned example and a bag continuous belt used in the bag supply device.

[0111] Description of symbols

[0112] 1: bag; 10: bag continuous belt; 11: front part; 12: back part; 13: opening; 14: bottom; 15: side edge; 16: storage space; 21: front cylindrical part; 21i, 22i: inner space; 21t, 22t: cylindrical body; 22: back cylindrical part; 31: separation part; 32: connection part; 41: punching hole; 42: easy-to-cut part; 43: bag cutting part; 44: side edge seam; 45: easy-to-break part; 50: bag supply device; 5 1: storage part; 52: guide rod; 53: support part; 54: base part; 55: wall mounting part; 56: screw fixing hole; 60: main body; 61: first part; 61d: first mutual interval; 62: expansion part; 63d: second mutual interval; 63: second part; 64: breaking part; 65: front end part; 91: supporting part; 92: storage part; C1: first fold; C2: second fold; D1: continuous direction; FP: folding part.

Claims

1. A bag supply device which supplies bags from a continuous belt of bags in sheet form, the continuous belt of bags having portions as the bags repeatedly arranged in a continuous direction, characterized in that: The continuous belt of bags has: a support portion that is continuous in the continuous direction; and a storage portion, which is adjacent to one side of the support portion in a direction perpendicular to the continuous direction and is repeatedly arranged in the continuous direction, The storage portion has: front face; a rear portion, which faces the front portion; an opening portion, which is provided at an edge of the support portion and communicates with the storage space between the front portion and the back portion; an edge of the bottom portion, which is located on the opposite side to the edge of the opening; and side edges extending from both ends of the edge of the opening to both ends of the edge of the bottom, The support portion is composed of a front cylindrical portion that is continuous along the edge of the support portion side of the front portion of each storage portion and a back cylindrical portion that is continuous along the edge of the support portion side of the back portion of each storage portion. The inner space of the front cylindrical portion and the inner space of the back cylindrical portion are respectively continuous over the entire range of the continuous direction of the bag continuous belt. The portion of the front portion located at the edge of the opening portion has a connecting portion located in the middle of the continuous direction and connected to the front cylindrical portion, and a pair of separation portions distributed over the entire range of both sides of the connecting portion and separated from the front cylindrical portion or detachably connected to the front cylindrical portion, The portion of the back portion located at the edge of the opening portion includes a connecting portion located in the middle of the continuous direction and connected to the back cylindrical portion, and a pair of separation portions distributed over the entire range of both sides of the connecting portion and separated from the back cylindrical portion or detachably connected to the back cylindrical portion. The adjacent storage portions of the bag continuous belt are cuttable and continuous or the adjacent storage portions of the bag continuous belt are separated. The front cylindrical portion and the back cylindrical portion are continuous in a manner that allows them to be cut at positions corresponding to a pair of the separation portions that are adjacent in the continuous direction. The bag supply device includes a pair of guide rods respectively inserted into the front cylindrical portion and the back cylindrical portion of the bag continuous belt. The pair of guide rods have a pair of front end portions and a pair of main body portions, the pair of main body portions are portions that are respectively continuous with the pair of front end portions and are provided at intervals, and the front end portion and the main body portion of each guide rod are supported only on the opposite side opposite to the front end portion, The pair of main body portions each have a break portion at a position away from the front end portion for breaking the front cylindrical portion and the rear cylindrical portion along the longitudinal direction thereof.

2. The bag supply device according to claim 1, wherein: The pair of main body portions have a pair of enlarged portions whose intervals from each other increase as they are away from the pair of front end portions.

3. The bag supply device according to claim 1, wherein: The pair of main body parts comprises: a pair of first portions, the pair of first portions being portions continuous with the pair of front end portions, respectively, and extending at a constant first interval therebetween; a pair of enlarged portions, the pair of enlarged portions being portions continuous with the pair of first portions, respectively, and the interval between the pair of enlarged portions expanding from the first mutual interval to a second mutual interval larger than the first mutual interval as the interval moves away from the first portion; as well as a pair of second portions, the pair of second portions being portions continuous with the pair of enlarged portions, and extending away from the enlarged portions at a constant second interval by a distance of more than 50% of the width of the bag, The pair of breakage portions are portions that are continuous with the pair of second portions, respectively.

4. The bag supply device according to claim 3, wherein: The first portion is a portion extending in the vertical direction, and the second portion is a portion extending in the lateral direction.

5. The bag supply device according to claim 1 or 2, wherein: The breaking portion is a portion having a cutting blade protruding from an outer peripheral surface of the guide rod.

6. A continuous belt of bags, wherein sheets serving as bag portions are repeatedly arranged in a continuous direction, characterized in that: The continuous belt of bags has: a support portion that is continuous in the continuous direction; and a storage portion, which is adjacent to one side of the support portion in a direction perpendicular to the continuous direction and is repeatedly arranged in the continuous direction, The storage portion has: front face; a rear portion, which faces the front portion; an opening portion provided at an edge of the support portion and communicating with the storage space between the front portion and the back portion; an edge of the bottom portion, which is located on the opposite side to the edge of the opening; and side edges extending from both ends of the edge of the opening to both ends of the edge of the bottom, The support portion is composed of a front cylindrical portion that is continuous along the edge of the support portion side of the front portion of each storage portion and a back cylindrical portion that is continuous along the edge of the support portion side of the back portion of each storage portion. The inner space of the front cylindrical portion and the inner space of the back cylindrical portion are respectively continuous over the entire range of the continuous direction of the bag continuous belt. The portion of the front portion located at the edge of the opening portion has a connecting portion located in the middle of the continuous direction and connected to the front cylindrical portion, and a pair of separation portions distributed over the entire range of both sides of the connecting portion and separated from the front cylindrical portion or detachably connected to the front cylindrical portion, The portion of the back portion located at the edge of the opening portion includes a connecting portion located in the middle of the continuous direction and connected to the back cylindrical portion, and a pair of separation portions distributed over the entire range of both sides of the connecting portion and separated from the back cylindrical portion or detachably connected to the back cylindrical portion. The adjacent storage portions of the bag continuous belt are cuttable and continuous or the adjacent storage portions of the bag continuous belt are separated. The front cylindrical portion and the rear cylindrical portion are continuous so as to be cuttable at positions corresponding to a pair of the separation portions adjacent to each other in the continuous direction.

7. The continuous belt of bags according to claim 6, wherein: The continuous strip-shaped flexible sheet is folded in a direction perpendicular to the continuous direction to form a first fold as the edge of the bottom, and the end portions of the portion on one side and the portion on the other side opposite to the first fold are folded back toward the first fold to form a second fold and a folded portion, respectively. The front part and the back part are formed by the part between the first fold and the folded part in the part on the one side and the part on the other side, respectively. The folded portion and the portion facing the folded portion in the one side portion and the other side portion are joined to the second fold line at a distance to form the front cylindrical portion and the back cylindrical portion, respectively. A slit or an easy-to-cut portion is formed at the position of the pair of separation portions as the front portion in the portion on the one side and at the position of the pair of separation portions as the back portion in the portion on the other side, respectively. In the continuous strip-shaped flexible sheet formed with the first fold, the front tubular portion, and the back tubular portion, a first easy-to-cut portion for cutting the front tubular portion and the back tubular portion and a second easy-to-cut portion for cutting the storage portion are formed at intervals corresponding to the width of the bag in the continuous direction, and on both sides of the second easy-to-cut portion in the continuous direction, the opposing surfaces of the portion on one side and the portion on the other side are continuously joined in the vertical direction.

8. The continuous belt of bags according to claim 6 or 7, wherein: The length of the separation portion in the continuous direction is 1 / 5 to 1 / 3 times the width of one of the storage portions.

9. The continuous belt of bags according to claim 6 or 7, wherein: The front cylindrical portion and the rear cylindrical portion are connected to each other so as to be separable at a position corresponding to the separation portion on the front side of each storage portion and close to the connection portion.

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