Delivery device of automatic packaging machine

Abstract

To provide a delivery device of an automatic packaging machine down-sized and improved in operability for loading spare packaging materials.SOLUTION: A delivery device of an automatic packaging machine comprises: a delivery part 20 provided with a driving shaft 22 for supporting a packaging material roll R1 so that it can be rotationally driven, and from which a packaging material 1 is delivered from the packaging material roll R1 by the rotational driving of the driving shaft 22; a roll holding part 30 for holding a preliminary packaging material roll R2 at the lower position of the driving shaft 22 of the delivery part 20; a joint part 50 provided with a swing arm 52 for vacuum-holding a leading edge of a preliminary packaging material 2 delivered from the roll holding part 30, and swingable in a direction to bring the leading edge of the preliminary packaging material 2 closer to the packaging material 1 delivered by the delivery part 20; and a cutting part 60 for clamping and cutting the packaging material 1 delivered from the delivery part 20. The excess part of the packaging material 1 is cut while clamping the packaging material 1 in the cutting part 60, and further, the swing arm 52 is swung in the joint part 50, and the leading edge of the preliminary packaging material 2 is pressed against the packaging material 1 to create a splice.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a technology for a feeding device of an automatic packaging machine, and more particularly to a feeding device of an automatic packaging machine that continuously feeds roll-shaped packaging material. [Background technology]

[0002] Conventionally, multi-row automatic packaging machines are known that seal and package powdered or granular items such as medicines, luxury goods, seasonings, and other foods to produce multiple stick-type packages (products) at one time. In such automatic packaging machines, a long film-like packaging material is first continuously fed out by a feeding device and cut into multiple pieces, and each piece is folded in half into a U-shape on a multi-row forming chute. Next, a vertical seal bar constituting a sealing device vertically seals the mating edges of the packaging material to form a tube, and a horizontal seal bar also constituting the sealing device horizontally seals the tubular packaging material for each package (each bag), thereby sealing and packaging the packaged items supplied from a filling device.

[0003] As an example of the above-mentioned automatic packaging machine, as disclosed in Patent Document 1, a configuration of a feeding device for an automatic packaging machine has been proposed in which a spare packaging material roll, which is a roll of spare packaging material (preparatory packaging material), is set in advance in addition to a packaging material roll, which is a roll of packaging material currently being used, and the beginning of the spare packaging material on the spare packaging material roll is overlapped with the packaging material on the packaging material roll to make them continuous, thereby making it possible to supply packaging material.

[0004] However, in the configuration of the feeding device of the conventional automatic packaging machine disclosed in the above-mentioned Patent Document 1, the packaging material roll and the spare packaging material roll are supported in the vertical direction, and during the splicing operation of joining the starting end of the spare packaging material to the packaging material, the support body to which the packaging material roll and the spare packaging material roll are attached is rotated 180 degrees in the front-to-rear direction of the machine body, so that the vertical positions of the packaging material roll and the spare packaging material roll are swapped. This poses the problem of requiring space to rotate the support body, making the device larger. In addition, because the spare packaging material roll is positioned above the packaging material roll, there is the problem of poor workability in installing the spare packaging material roll (and the spare packaging material). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-335759 Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, the present invention relates to a feeding device for an automatic packaging machine, and aims to solve the above-mentioned conventional problems, by providing a feeding device for an automatic packaging machine that has a compact device configuration and improves the ease of installing spare packaging materials. [Means for solving the problem]

[0007] The problem to be solved by the present invention is as described above, and the means for solving this problem will now be described.

[0008] That is, claim 1 provides a dispensing device for an automatic packaging machine that continuously dispenses roll-shaped packaging material, comprising: a dispensing section that is provided with a drive shaft that rotatably supports a packaging material roll, and dispensing packaging material from the packaging material roll when the drive shaft is rotated; a roll holding section that holds the spare packaging material roll at a position below the drive shaft of the dispensing section; a joint section that adsorbs and holds the beginning of the spare packaging material fed from the spare packaging material roll in the roll holding section, and is provided with a swing arm that can swing in a direction to bring the beginning of the spare packaging material close to the packaging material dispensed from the packaging material roll in the dispensing section; and a cutting section that is disposed downstream of the joint section in a supply path for the packaging material, and that clamps and cuts the packaging material dispensed from the packaging material roll in the dispensing section, and the cutting section clamps the packaging material while cutting off the excess portion, and the joint section swings the swing arm to press the beginning of the spare packaging material against the packaging material to splice it.

[0009] In claim 2, the packaging material roll is provided with a paper tube recovery section that recovers the paper tube of the packaging material roll after it has been cut by the cutting section.

[0010] In claim 3, the paper tube recovery unit is provided with a pair of guide arms that guide the paper tube and transport it downward, and a paper tube receiving unit that is connected to the guide surfaces of the pair of guide arms and recovers the paper tube, the pair of guide arms are arranged to be able to swing in the vertical direction of the machine body, and the pair of guide arms are stopped at a retracted position where they do not come into contact with the packaging material roll supported by the drive shaft of the pay-out unit, and at a recovery position where the pair of guide arms come into contact with the drive shaft of the pay-out unit and are connected to the paper tube receiving unit.

[0011] In claim 4, the roll holding unit is capable of moving up and down while holding the spare packaging material roll, and moves the spare packaging material roll up from a lower holding position to a clamping position where it overlaps with the axial center of the drive shaft of the payout unit.

[0012] In claim 5, the roll holding section moves the roll of spare packaging material upward to the clamping position after the beginning of the spare packaging material is spliced ​​to the packaging material at the joint section. [Effects of the Invention]

[0013] The effect of the present invention is that the device configuration can be made compact, and the workability of attaching the spare packaging material can be improved. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a side cross-sectional view showing the overall configuration of an automatic packaging machine according to an embodiment of the present invention. [Figure 2] FIG. 2 is a front view of the automatic packaging machine of FIG. [Figure 3] FIG. 2 is a side cross-sectional view of the dispensing device of the present embodiment. [Figure 4] 10A and 10B are diagrams showing a tape processing process for a preliminary packaging material in a processing section. [Figure 5] FIG. 4 is an enlarged side view of the joint portion, the cutting portion, and the paper tube recovery portion. [Figure 6] FIG. [Figure 7] 10A and 10B are diagrams illustrating a process of splicing a preliminary packaging material by a feeding device. [Figure 8] 10 is a diagram showing a process of splicing the spare packaging material by the feeding device. FIG. [Figure 9] 10 is a diagram showing a process of splicing the spare packaging material by the feeding device. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] Next, an embodiment of the invention will be described. In the following embodiments, the direction of the arrow X in Fig. 1 corresponds to the up-down direction of the automatic packaging machine 100, the direction of the arrow Z corresponds to the front-rear direction of the automatic packaging machine 100, and the direction of the arrow Y in Fig. 2 corresponds to the left-right direction of the automatic packaging machine 100.

[0016] First, the overall configuration of the automatic packaging machine 100 of this embodiment will be outlined below. 1 and 2, the automatic packaging machine 100 of this embodiment is configured as a multi-row automatic packaging machine that obtains multiple stick-type packages (products) at a time while intermittently supplying a current long-shaped packaging material 1 along a supply path. Specifically, the machine is configured with a feeding device 10 that continuously feeds out the packaging material 1, a slitter device 11 that cuts the packaging material 1 into multiple pieces, a forming chute 12 that folds the packaging material 1 in half along the longitudinal direction, a filling device 13 that stores and measures and fills the packaged items, a vertical sealing device 14 and a horizontal sealing device 15 that vertically and horizontally seal the folded-in-half packaging material 1 to hermetically package the packaged items supplied from the filling device 13, and a cutter device 16 that cuts the packaging material 1 with the packaged items hermetically packaged to obtain packages.

[0017] A payout device 10 that supports a packaging material roll R1 so that it can be paid out is disposed at the lower rear of the automatic packaging machine 100. The payout device 10 supports the packaging material roll R1, which is a roll of current packaging material 1, and continuously pays out the packaging material 1 from the packaging material roll R1 downstream of the supply path. The payout device 10 of this embodiment supports a spare packaging material roll R2, which is a roll of spare packaging material 2, below the packaging material roll R1. When the remaining amount of packaging material roll R1 falls below a predetermined amount, the starting end of the spare packaging material 2 from the spare packaging material roll R2 is made to connect to the packaging material 1, and the spare packaging material 2 is supplied downstream in the conveying direction. The configuration of the payout device 10 will be described in detail below (see FIG. 3, etc.).

[0018] A slitter device 11 is disposed at the top of the automatic packaging machine 100, and as the packaging material 1 moves along it is cut into a plurality of narrow strips (eight strips in this embodiment) to match the number of rows of forming chutes 12 (eight rows in this embodiment). The packaging material 1 cut by the slitter device 11 is transferred to the corresponding forming chutes 12 disposed at the top front of the machine. The forming chutes 12 are formed as surface members that are wide at the top and narrow at the bottom in order to fold the cut packaging material 1 in half along the longitudinal direction, and as the packaging material 1 continuously passes along the surface, the packaging material 1 is folded in half into a U-shape in horizontal cross section.

[0019] A filling device 13 is arranged above the forming chute 12, and the packaged item, the volume of which has been measured by the filling device 13, is dropped into the forming chute 12 and filled into the packaging material 1 that has been folded in half via the forming chute 12.

[0020] A vertical sealing device 14 and a horizontal sealing device 15 are disposed below the forming chute 12, which perform vertical and horizontal sealing of the packaging material 1 folded in half. The packaging material 1 folded in half by the forming chute 12 has its joining edges vertically sealed by the vertical sealing device 14 to form a tube, and is then horizontally sealed to form a bottom by the horizontal sealing device 15 disposed below the vertical sealing device 14. Items to be packaged are then intermittently supplied from the filling device 13 through the forming chute 12 into the bottomed packaging material 1, and the top edge of the packaging material 1 sent out in the longitudinal direction is horizontally sealed to hermetically package the items to be packaged.

[0021] In the automatic packaging machine 100 of this embodiment, the transverse sealing device 15 is provided so as to be movable up and down relative to the machine body, and is configured so that the transverse sealing device 15 moves downward while transversely sealing the packaging material 1, thereby intermittently feeding out the packaging material 1 in the longitudinal direction. That is, the packaging material 1 transversely sealed by the transverse sealing device 15 is filled with the packaged items via the forming chute 12, and at the same time, the packaging material 1 is fed out by being moved downward a distance equivalent to one package while still held by the transverse sealing device 15, and eventually the transverse sealing device 15 returns to its upward position and transversely seals the packaging material 1 again, thereby hermetically packaging the packaged items.

[0022] A cutter device 16 is disposed below the horizontal sealing device 15, and the packaging material 1 in which the packaged items are sealed is cut in a straight line at the center of the horizontal seal by the cutter device 16, thereby continuously obtaining stick-type packages. The packages cut by the cutter device 16 are discharged through a discharge duct 17 disposed below the cutter device 16.

[0023] Next, the configuration of the dispensing device 10 of this embodiment will be described in detail below. As shown in Figure 3, the unwinding device 10 of this embodiment is configured so that packaging material 1 is continuously unwound from the packaging material roll R1 in the downstream direction of the supply path, and when the remaining amount of packaging material roll R1 falls below a predetermined amount, the starting end of the spare packaging material 2 of the spare packaging material roll R2 is made to connect to the packaging material 1, and the spare packaging material 2 is supplied downstream in the conveying direction. Specifically, the unwinding device 10 of this embodiment is configured with a unwinding section 20, a roll holding section 30, a processing section 40, a jointing section 50, a cutting section 60, and a paper tube recovery section 70, etc.

[0024] The payout section 20 is configured such that a pair of drive shafts 22 serving as left and right clamp shafts that rotatably support the packaging material roll R1 are disposed on a frame body 21, and the drive shafts 22 are driven to rotate by a drive device such as a servo motor (not shown), thereby continuously paying out the packaging material 1 downstream of the supply path from the packaging material roll R1 supported on the drive shafts 22. The amount of packaging material 1 paid out by the payout section 20 is adjusted by controlling the rotation speed of the drive shaft 22 by the drive motor in accordance with the vertical position of a dancer roller 23 that is in contact with the supply path and can move up and down freely.

[0025] In the payout section 20, a roll diameter detection sensor 80, which is a known non-contact sensor such as a photoelectric sensor disposed above the frame body 21, detects whether the packaging material roll R1 is supported by the drive shaft 22. The roll diameter detection sensor 80 also detects the roll diameter of the packaging material roll R1 supported by the drive shaft 22, and when the roll diameter of the packaging material roll R1 falls below a predetermined value, a step of joining the spare packaging material 2, which will be described later, is carried out (see Figures 7 to 9, etc.).

[0026] The roll holding unit 30 is disposed below the unwinding unit 20, and a roll loading table 31 is disposed vertically below the drive shaft 22 of the unwinding unit 20, on which the spare packaging material roll R2 transported horizontally from the left-right direction of the machine body (the direction of arrow Y in Figure 2) is placed.The roll loading table 31 is connected to a vertical lifting device 32 so that it can be raised and lowered vertically while holding the spare packaging material roll R2 on the roll loading table 31.

[0027] The vertical lifting device 32 is configured such that the lifting mechanism 33 is driven by a drive motor (not shown), and the roll loading table 31 is raised and lowered along the lifting guide 34 laid in the vertical direction of the machine body (the direction of arrow X in Figure 1), and the spare packaging material roll R2 placed on the roll loading table 31 is stopped at a lower holding position P1 and then moved upward from the holding position P1 until it is stopped at a clamp position P2 where the paper tube T2 of the spare packaging material roll R2 coincides with the axial center of the drive shaft 22 of the payout section 20 (see Figure 9(a) etc. described later).

[0028] In the roll holding unit 30, a roll presence detection sensor 81, which is a well-known non-contact sensor such as a photoelectric sensor and is disposed above the roll mounting table 31, detects whether the spare packaging material roll R2 is being held on the roll mounting table 31, which is stopped at holding position P1. In the roll holding unit 30, a raised position detection sensor 82, which is a well-known non-contact sensor such as a photoelectric sensor and is disposed above the roll mounting table 31 and directly below the drive shaft 22, detects the vertical position of the spare packaging material roll R2, and controls the drive of the vertical lifting device 32 to stop the spare packaging material roll R2 at clamp position P2.

[0029] The processing unit 40 is disposed on the frame body 21 of the above-described payout unit 20 so as to protrude toward the rear of the machine body, and is configured to be able to feed the spare packaging material 2 from the spare packaging material roll R2 held by the roll holding unit 30 toward the rear of the machine body and perform tape processing to adhere a tape material 2a to the starting end of the spare packaging material 2. In the processing unit 40 of this embodiment, a processing support body 41 protrudes toward the rear of the machine body from the frame body 20, and an operator performs tape processing (work) on the starting end of the spare packaging material 2 on the upper surface of the processing support body 41.

[0030] As shown in Fig. 4, the tape processing of the preliminary packaging material 2 in the processing unit 40 begins by folding back the beginning end of the preliminary packaging material 2, which has been sent out from the preliminary packaging material roll R2 toward the rear of the machine, toward the front of the machine and onto the upper surface of the processing support 41, and then placing and fixing a pressing member 42 from above (see Fig. 4(a)). Next, the preliminary packaging material 2 is cut by a cutter member 43 through the processing support 41 and the pressing member 42 (through holes) (see Fig. 4(b)). After removing part of the pressing member 42 to expose the beginning end of the preliminary packaging material 2 (see Fig. 4(c)), a tape material 2a having an adhesive surface formed on only one side is attached to the beginning end of the preliminary packaging material 2 so as to protrude beyond the beginning end (see Fig. 4(d)).

[0031] As shown in Figures 3 and 5, the joint unit 50 is disposed above the above-mentioned unwinding unit 20, and is provided with a frame body 51 having a swinging arm 52 that adsorbs and holds the starting end of the spare packaging material 2 fed from the spare packaging material roll R2 of the roll holding unit 30. The swinging arm 52 that adsorbs and holds the starting end of the spare packaging material 2 is swung to press the starting end of the spare packaging material 2 against the packaging material 1, thereby forming a joint.

[0032] The swing arm 52 is capable of swinging up and down around a swing shaft 53 on the rear side of the frame body 51, and is caused to swing by the drive of a drive device such as a servo motor (not shown) being transmitted from a drive shaft 54 ​​to the swing shaft 53 via a swing link mechanism 55. The swing arm 52 is provided at the end opposite to the side supported by the swing shaft 53 with a suction holding section 56 that suction-holds the starting end of the spare packaging material 2, and the starting end of the spare packaging material 2 (tape material 2a) is brought into contact with the suction surface of the suction holding section 56 and vacuum-sucked, thereby suction-holding the starting end of the spare packaging material 2 to the suction holding section 56.

[0033] When the swing arm 52 is swung, the joint portion 50 is stopped at an attachment position P3 where the suction surface of the suction holding portion 56 faces upward, and is then swung from the attachment position P3 upward in the direction of the machine body, i.e., in the direction of bringing the starting end of the spare packaging material 2 close to the packaging material 1 unwound from the packaging material roll R1 by the unwinding portion 20, and is stopped at a standby position P4 where the joint portion 50 is brought close to the packaging material 1 at a predetermined distance from the rear side of the machine body (see Figure 5, etc.).

[0034] In the joint section 50, when the processing section 40 has completed the tape processing of the spare packaging material 2, the operator removes the spare packaging material 2 from the processing support 41, and adsorbs and holds the starting end to which the tape material 2a is attached to the adsorbing and holding section 56 of the swinging arm 52, which is stopped at the mounting position P3.The swinging arm 52 is then swung upward and stopped at the waiting position P4, where the starting end of the spare packaging material 2 is brought close to the packaging material 1 and waits (see Figure 5 and Figure 7, which will be described later).

[0035] As shown in Figures 3, 5 and 6, the cutting section 60 is arranged above the joint section 50 and downstream of the supply path of the packaging material 1, and is configured as a unit body in which an upper pressure member 62, an end cutter member 63, etc. are integrally assembled to a frame body 61, and is configured as a cutting device in which the packaging material 1 paid out from the packaging material roll R1 in the payout section 20 is clamped by the upper pressure member 62 and cut by the end cutter member 63.

[0036] The upper holding member 62 is disposed so as to protrude from the frame body 61 toward the rear of the machine body, and a pressing member 62a made of an elastic material such as rubber is disposed on the surface facing a contact plate 64 attached to the rear surface of the frame body 61. The upper holding member 62 is connected to a cylinder device 65 disposed on the frame body 61, and when a sliding rod 65a of the cylinder device 65 is operated, the upper holding member 62 is slid in a direction so as to press the pressing member 62a against the contact plate 64.

[0037] The end cutter member 63 has a cutting blade formed on its protruding edge, and is disposed so as to be able to protrude toward the rear of the machine body through an insertion hole 61a opened in the rear surface of the frame body 61. The end cutter member 63 is attached to a support plate 66 disposed so as to be able to slide on the frame body 61, and is slid in a direction so as to cause the edge to protrude from the insertion hole 61a when a sliding rod 67a of a cylinder device 67 connected to the support plate 66 is operated.

[0038] In the cutting section 60, when the cylinder device 65 is operated, the packaging material 1 fed along the supply path is pressed and clamped by the upper presser member 62 (pressing member 62a) between the upper presser part 62 and the contact plate 64. Then, when the cylinder device 67 is operated while the packaging material 1 is clamped by the upper presser member 62, the end cutter member 63 protrudes from the insertion hole 61a, and the packaging material 1 clamped by the upper presser member 62 is cut by the cutting blade, and the excess portion of the packaging material 1 is cut off (see Figure 8, etc., described later).

[0039] As shown in Figures 3 and 5, the cardboard tube recovery unit 70 is arranged above the above-mentioned payout unit 20, and is provided with a pair of guide arms 71, 71 that guide and transport downward the cardboard tube T1 of the packaging material roll R1 that has been removed from the drive shaft 22, and is configured as a cardboard tube recovery device that recovers the cardboard tube T1 of the used packaging material roll R1 after it has been cut in the cutting unit 60.

[0040] The guide arm 71 is disposed on the front side of the frame body 51 so as to be swingable up and down about a swing shaft 72, and is swung by the drive of a drive device such as a servo motor (not shown) transmitted to the swing shaft 72. The guide arms 71 are disposed as plate-shaped members on the left and right sides of the machine, with their lower edges bent in opposing directions to form guide surfaces 71a, and their sides on the rear side of the machine being curved in a concave shape to form curved recesses 71b. In addition, a paper tube receiving portion 73 that is continuous with the guide surfaces 71a of the pair of guide arms 71 is provided at a position below the front of the machine of the pair of guide arms 71, and that collects the paper tube T1.

[0041] When the pair of guide arms 71·71 are swung, the paper tube recovery unit 70 is stopped at a retracted position P5 where the pair of guide arms 71·71 do not come into contact with the packaging material roll R1 supported by the drive shaft 22 of the payout unit 20, and is then swung downward from the retracted position P5 to a recovery position P6 where the pair of guide arms 71·71 come into contact with the drive shaft 22 of the payout unit 20 and the guide surface 71a and the paper tube receiving unit 73 are continuous.

[0042] In the paper tube recovery section 70 of this embodiment, as described above, a curved recess 71b is formed in the guide arm 71, so that when the guide arm 71 is stopped at the recovery position P6, the curved recess 71b can be engaged with the drive shaft 22 of the payout section 20, thereby positioning the guide surface 71a below the drive shaft 22, and the paper tube T1 released from the drive shaft 22 can fall by its own weight and be reliably guided by the guide arm 71 (guide surface 71a).

[0043] In the paper tube recovery unit 70, a paper tube detection sensor 83, which is a known non-contact sensor such as a photoelectric sensor, disposed above the payout unit 20, detects whether the paper tube T1 of the packaging material roll R1 is held by the drive shaft 22. In addition, in the paper tube recovery unit 70, a paper tube discharge confirmation sensor 84, which is a known non-contact sensor such as a photoelectric sensor, disposed above the paper tube receiving unit 73, detects whether the paper tube T1 of the packaging material roll R1 has been recovered in the paper tube receiving unit 73.

[0044] Next, the operation of the feeding device 10 of this embodiment for splicing the spare packaging material 2 will be described in detail below. As shown in Figures 7 to 9, in the dispensing device 10 configured as described above, the starting end of the spare packaging material 2 that has been previously fed from the spare packaging material roll R2 is adsorbed and held by the adsorbing and holding portion 56 of the swing arm 52 that is stopped at the mounting position P3, and then the swing arm 52 is swung upward to wait in a stopped state at the standby position P4 where the starting end of the spare packaging material 2 is brought close to the packaging material 1 (Figure 7(a)).

[0045] In the present embodiment, the feeding device 10 automatically starts a splicing operation when the remaining amount of the packaging material roll R1 falls below a predetermined amount. First, when the roll presence / absence detection sensor 81 detects that the spare packaging material roll R2 is being held on the roll mounting table 31, which is stopped at holding position P1, and the roll diameter detection sensor 80 detects that the roll diameter of the packaging material roll R1 is below a predetermined value and the paper core detection sensor 83 detects the paper core T1 of the packaging material roll R1, the upper presser member 62 is activated, the packaging material 1 is pressed and clamped between the upper presser member 62 and the abutment plate 64, and the operation of the automatic packaging machine 100 is stopped (FIG. 7(b)).

[0046] When the automatic packaging machine 100 is stopped, the drive shaft 22 is driven to rotate in the reverse direction while the packaging material 1 remains clamped by the upper pressure member 62, applying tension to the packaging material 1 on the paper tube T1, and then the end cutter member 63 is actuated to protrude, cutting the packaging material 1 clamped by the upper pressure member 62, thereby separating the excess portion of the packaging material 1 (Figure 8(a)).

[0047] Next, the swing arm 52 stopped at the standby position P4 is activated, and the starting end of the spare packaging material 2 vacuum-adsorbed to the suction holding section 56 is pressed against the packaging material 1, thereby joining the packaging material 1 and the starting end of the spare packaging material 2 with the tape material 2a attached to the starting end of the spare packaging material 2 (Figure 8(b)).

[0048] During this time, the pair of guide arms 71 are swung downward from the retracted position P5 and stopped at a recovery position P6 where the guide surface 71a and the paper tube receiving section 73 are connected (Fig. 7(b)), and when the packaging material 1 is cut by the end cutter member 63, the paper tube T1 of the used packaging material roll R1 falls by its own weight from the drive shaft 22 and is collected in the paper tube receiving section 73 while being guided by the guide arm 71 (guide surface 71a) (Fig. 8(a)). Then, when the paper tube discharge confirmation sensor 84 detects that the paper tube T1 has been collected in the paper tube receiving section 73, the pair of guide arms 71 are swung again and returned to the retracted position P5 (Fig. 8(b)).

[0049] When the splicing of the spare packaging material 2 is complete, the swing arm 52 is actuated and stopped at the mounting position P3, and the vertical lifting device 32 is actuated to raise the roll mounting table 31 from the holding position P1. When the upright position detection sensor 82 detects the vertical position of the spare packaging material roll R2, the cardboard core T2 of the spare packaging material roll R2 is stopped at the clamp position P2 where it coincides with the center of the drive shaft 22 of the payout unit 20, and the spare packaging material roll R2 is supported by the drive shaft 22 (FIG. 9(a)). Then, as the drive shaft 22 is driven to rotate in this state, the spare packaging material 2 is continuously paid out downstream of the supply path from the spare packaging material roll R2 supported by the drive shaft 22 (FIG. 9(b)).

[0050] As described above, the unwinding device 10 of this embodiment is provided with a drive shaft 22 that rotatably supports the packaging material roll R1, and includes a unwinding section 20 in which the drive shaft 22 is rotated to unwind the packaging material 1 from the packaging material roll R1, a roll holding section 30 that holds the spare packaging material roll R2 at a position below the drive shaft 22 of the unwinding section 20, and a roll holding section 30 that sucks and holds the starting end of the spare packaging material 2 fed from the spare packaging material roll R2 of the roll holding section 30, and moves the starting end of the spare packaging material 2 in a direction that brings the starting end of the spare packaging material 2 close to the packaging material 1 unwound from the packaging material roll R1 in the unwinding section 20. The device comprises a joint section 50 provided with a swingable swing arm 52, and a cutting section 60 arranged downstream of the joint section 50 in the supply path of the packaging material 1 and clamping and cutting the packaging material 1 unwound from the packaging material roll R1 in the unwinding section 20. The cutting section 60 clamps the packaging material 1 while cutting off the excess portion of the packaging material 1, and the joint section 50 swings the swing arm 52 to press the starting end of the spare packaging material 2 against the packaging material 1 to splice it together, thereby enabling the device configuration to be made smaller and improving the ease of installing the spare packaging material.

[0051] In other words, in the dispensing device 10 of this embodiment, a roll holding section 30 that holds the spare packaging material roll R2 is provided below the dispensing section 20, and the swinging arm 52 that adsorbs and holds the starting end of the spare packaging material 2 fed out from the spare packaging material roll R2 is swingable to press the starting end of the spare packaging material 2 against the packaging material 1 to splice it together.Therefore, without moving the packaging material roll R1 and the spare packaging material roll R2, the excess portion of the packaging material 1 can be cut off in the cutting section 60, and the spare packaging material 2 can be spliced ​​together simply by swinging the swinging arm 52 that holds the starting end of the spare packaging material 2, and the device configuration can be made smaller with a simple configuration.

[0052] In particular, the unwinding device 10 of this embodiment is equipped with a paper tube recovery section 70 that recovers the paper tube T1 of the packaging material roll R1 after it has been cut by the cutting section 60, so that the operator does not need to remove the paper tube T1 from the drive shaft 22 of the unwinding section 20, thereby shortening the joining process of the spare packaging material 2.

[0053] Furthermore, in the unwinding device 10 of this embodiment, the paper tube recovery section 70 is provided with a pair of guide arms 71·71 that guide the paper tube T1 and transport it downward, and a paper tube receiving section 73 that is connected to the guide surfaces 71a·71a of the pair of guide arms 71·71 and recovers the paper tube T1, and the pair of guide arms 71·71 are arranged so that they can swing in the vertical direction of the body, and are stopped at a retracted position P5 where the pair of guide arms 71·71 do not come into contact with the packaging material roll R1 supported by the drive shaft 22 of the unwinding section 20, and at a recovery position P6 where the pair of guide arms 71·71 come into contact with the drive shaft 22 of the unwinding section 20 and are connected to the paper tube receiving section 73, respectively, so that the mechanism for recovering the paper tube T1 can be configured simply and in a space-saving manner.

[0054] Furthermore, in the unwinding device 10 of this embodiment, the roll holding section 30 is capable of raising and lowering while holding the spare packaging material roll R2, and moves the spare packaging material roll R2 upward from the lower holding position P1 to a clamping position P2 that overlaps with the axial center of the drive shaft 22 of the unwinding section 20. This simplifies the work of attaching the spare packaging material roll R2 to the drive shaft 22, further improving workability.

[0055] Furthermore, in the unwinding device 10 of this embodiment, the roll holding unit 30 moves the spare packaging material roll R2 upward to the clamp position P2 after the starting end of the spare packaging material 2 has been spliced ​​to the packaging material 1 at the joint unit 50. Therefore, simply by moving the spare packaging material roll R2 upward and supporting it on the drive shaft 22, the unwinding unit 20 can continuously unwind the spare packaging material 2 from the spare packaging material roll R2 downstream of the supply path.

[0056] The configuration of the dispensing device 10 is not limited to the above-described embodiment, and various modifications are possible without departing from the object of the present invention.

[0057] Furthermore, although the automatic packaging machine 100 of the above-described embodiment is configured to be capable of filling and packaging eight rows at the same time (see Figure 2, etc.), the number of rows that can be filled and packaged simultaneously is not limited to this and can be set arbitrarily depending on the width of the packaging material 1. [Explanation of symbols]

[0058] 1 Packaging material 2. Spare packaging materials 2a Tape material 10. Feeding device 11 Slitting equipment 12 Forming chute 13 Filling equipment 14 Vertical sealing device 15 Horizontal sealing device 16 Cutter device 17 Exhaust duct 20 Feeding section 21 Frame body 22 Drive shaft 23 Dancerola 30 Roll holder 31 Roll placement table 32 Up / down lifting device 50 Joint 52 Swing arm 53 Swing axis 56 Suction holding part 60 Cut section 62 Upper holding member 63 End cutter member 64 Contact plate 70 Paper tube collection section 71 Guide arm 71a Guide surface 71b curved recess 72 Oscillating shaft 73 Paper tube holder 100 automatic packaging machine R1 Packaging material roll R2 Spare Packaging Material Roll T1 paper tube

Claims

1. In a feeding device of an automatic packaging machine that continuously feeds roll-shaped packaging material, a feeding section that is provided with a drive shaft that supports a packaging material roll so that the packaging material can be rotated, and that feeds out packaging material from the packaging material roll when the drive shaft is rotated; a roll holder for holding a spare packaging material roll below the drive shaft of the payout unit; a joint portion provided with a swing arm that sucks and holds the beginning of the preliminary packaging material fed from the preliminary packaging material roll of the roll holding portion and swings in a direction to bring the beginning of the preliminary packaging material close to the packaging material fed from the packaging material roll in the feeding portion; a cutting section disposed downstream of the joint section in the supply path of the packaging material, for clamping and cutting the packaging material fed from the packaging material roll by the feeding section; The cutting section cuts off the excess portion of the packaging material while clamping the packaging material, and the joint section swings the swing arm to press the beginning end of the spare packaging material against the packaging material to splice it. A feeding device for an automatic packaging machine.

2. 2. The feeding device for an automatic packaging machine according to claim 1, further comprising a paper tube recovery section for recovering the paper tube of the packaging material roll after it has been cut by said cutting section.

3. 3. The feeding device of an automatic packaging machine according to claim 2, wherein the paper tube recovery section is provided with a pair of guide arms that guide the paper tube and transport it downward, and a paper tube receiving section that is connected to the guide surfaces of the pair of guide arms and recovers the paper tube, the pair of guide arms are arranged to be able to swing in the vertical direction of the machine body, and the pair of guide arms are stopped at a retracted position where they do not come into contact with the packaging material roll supported by the drive shaft of the feeding section, and at a recovery position where the pair of guide arms abut against the drive shaft of the feeding section and are connected to the paper tube receiving section.

4. 3. The feeding device for an automatic packaging machine according to claim 1, wherein the roll holding unit is capable of moving up and down while holding the spare packaging material roll, and moves the spare packaging material roll up from a lower holding position to a clamping position where the roll coincides with the axial center of the drive shaft of the feeding unit.

5. 5. The feeding device for an automatic packaging machine according to claim 4, wherein the roll holding section moves the roll of spare packaging material upward to a clamping position after the leading end of the spare packaging material is spliced ​​to the packaging material at the joint section.

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