Packaging equipment

The packaging device addresses grip instability and directional confusion by using a horizontal grip and thumb-operated mechanism with gravity-assisted height changes and optional braking, ensuring secure and intuitive operation.

JP7782805B2Active Publication Date: 2025-12-09ISHIDA CO LTD
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Patent Information

Application Number
JP2022019087
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-02-09
Publication Date
2025-12-09
Estimated Expiration
2042-02-09

AI Technical Summary

Technical Problem

Conventional packaging devices require operators to extend their index finger to release a locking mechanism, which weakens the grip and makes it difficult to intuitively understand the direction of movement for the operating unit, leading to potential loss of grip and improper operation.

Method used

The packaging device incorporates a horizontally extending grip and a second operating unit positioned for thumb operation, with a restricting mechanism that utilizes gravity and optional braking units to maintain control during height changes, ensuring intuitive operation and secure grip retention.

Benefits of technology

The design allows operators to intuitively understand the direction of operation, reduces the likelihood of losing grip, and prevents sudden movements of the operating unit, enhancing operational stability and efficiency.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

To provide a packaging device that enables a worker who sets a film roll to intuitively grasp a direction in which an operation part is to be moved, so that the force for grasping a grip of the operation part is hardly reduced.SOLUTION: A packaging device comprises support rollers 51, 52 on which a film roll is placed, a holding part 55, a first operation part 60 which has a grip 61 extending horizontally, a link mechanism 38 which includes a restriction member, and a second operation part 72. The holding part 55 holds the tip part of the film fed out of the film roll. The first operation part 60 moves the holding part 55 between a first height position for placing the film roll on the support rollers 51, 52 and a second height position for packaging. The restriction member restricts the holding part 55 from moving from the first height position to the second height position. The second operation part 72 releases the holding part 55 from being restricted by the restriction member. The second operation part 72 is arranged at a position that a finger of a worker comes into contact with when the grip 61 is gripped.SELECTED DRAWING: Figure 7
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Description

[Technical Field]

[0001] The present invention relates to a packaging machine. [Background technology]

[0002] Conventionally, there has been known a packaging device such as that shown in Patent Document 1 (JP 2003-191905 A). In the packaging device, a film is unwound from a film roll, and an item to be packaged is packaged with the unwound film. Summary of the Invention [Problem to be solved by the invention]

[0003] When setting a film roll in the packaging device, the film roll is placed on the mounting section at the maintenance position, and the leading edge of the film is held by the holding section. The operator then moves the operating section, which holds the leading edge of the film, to a predetermined height position for packaging. For example, the grip of the operating section extends vertically at the maintenance position. When the operator releases the locking mechanism and tilts the operating section forward, the holding section descends to the predetermined height position.

[0004] However, when the grip of the operating unit extends vertically, the operator may be unsure whether to move the operating unit back and forth or left and right when grasping the grip. Also, the operator holds the grip of the operating unit and extends their index finger to release the locking mechanism, which weakens the grip when the lock is released.

[0005] An object of the present invention is to provide a packaging device that allows an operator setting a film roll to intuitively understand the direction in which to move the operating unit and is less likely to lose grip on the grip of the operating unit. [Means for solving the problem]

[0006] A packaging device according to a first aspect includes a placing section, a holding section, a first operating section, a restricting section, and a second operating section. A film roll is placed on the placing section. The holding section holds the leading end of the film unwound from the film roll. The first operating section is operated by an operator. The first operating section moves the holding section between a first height position when the film roll is placed on the placing section and a second height position when packaging. The restricting section restricts the holding section from moving from the first height position to the second height position. The second operating section is operated by an operator and releases the restriction of the holding section by the restricting section. The first operating section has a grip extending horizontally. The second operating section is positioned at a position where the operator's fingers come into contact when the operator grips the grip.

[0007] In this packaging device, the grip that the worker holds extends horizontally, allowing the worker to intuitively understand how to push or pull the grip. Furthermore, in this packaging device, the second operating part is located in a position where the worker's fingers come into contact with the grip when the worker holds it. This makes it difficult for the worker to release their grip.

[0008] A packaging device according to a second aspect is the packaging device according to the first aspect, wherein the second operating portion is disposed at a position where the thumb of an operator comes into contact when the operator grips the grip.

[0009] Unlike conventional packaging devices, this packaging device uses the thumb, not the index finger, to operate the second operating part, which releases the restriction on the holding part by the restricting part. This eliminates the need to remove the index finger, which is the key to gripping the grip, from the grip after gripping it, making it even more difficult for the worker to release their grip.

[0010] A packaging device according to a third aspect is the packaging device according to the second aspect, wherein the second operating portion is pressed by the thumb of an operator holding the grip, thereby releasing the restriction of the holding portion by the restricting portion.

[0011] A packaging device according to a fourth aspect is the packaging device according to any one of the first to third aspects, wherein the restricting portion restricts the holding portion from moving from the first height position to the second height position due to gravity.

[0012] In this packaging device, when an operator operates the second operating unit to release the restriction of the holding unit by the restricting unit, the holding unit naturally moves from the first height position to the second height position due to gravity. Therefore, if the structure of the grip were such that the operator's strength in the grip could be easily released, there is a risk that the holding unit will move forcefully from the first height position to the second height position when the restriction of the holding unit by the restricting unit is released. However, because this packaging device employs a structure that makes it difficult for the operator to release their strength in the grip, the operator's strength can easily suppress the sudden movement of the holding unit.

[0013] A packaging device according to a fifth aspect is the packaging device according to the fourth aspect, further comprising a braking unit that reduces the speed of movement of the holding unit from the first height position to the second height position due to gravity after the second operating unit releases the restriction of the holding unit by the restricting unit.

[0014] In this case, the speed of the movement of the holding part from the first height position to the second height position due to gravity is suppressed by the braking part without relying on the strength of the worker gripping the grip, thereby further suppressing sudden movement of the holding part.

[0015] A packaging device according to a sixth aspect is the packaging device according to any one of the first to fifth aspects, further including a rotating member. The rotating member rotates about a first rotation axis extending horizontally. The first operating unit is fixed to the rotating member. When the first operating unit is operated by an operator and the first operating unit and the rotating member move, the holding unit moves from the second height position to the first height position in response to the movement of the rotating member.

[0016] A packaging device according to a seventh aspect is the packaging device according to any one of the first to sixth aspects, wherein the placement unit, the holding unit, the first operating unit, the restricting unit, and the second operating unit are rotatable about a second rotation axis extending in the vertical direction, thereby allowing an operator to grasp the grip of the first operating unit and pull the placement unit, the holding unit, the first operating unit, the restricting unit, and the second operating unit closer to the operator. [Effects of the Invention]

[0017] With the packaging device according to the present invention, the grip that the worker holds extends horizontally, allowing the worker to intuitively understand how to operate it. Also, because the second operating part is located in a position where the worker's fingers come into contact with the grip when the worker holds it, the worker is less likely to lose control of the grip. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is an external perspective view of a packaging device having weighing and pricing functions. [Figure 2] FIG. 2 is a diagram showing the configuration of a measuring and conveying mechanism and a packaging mechanism. [Figure 3] FIG. 4 is a side view showing the film storage section of the packaging mechanism and its surrounding structure during operation. [Figure 4] FIG. 10 is a perspective view showing the film storage section of the packaging mechanism and the surrounding structure when the film roll is set. [Figure 5] FIG. 10 is a side view showing the film storage section of the packaging mechanism and the surrounding structure when the film roll is set. [Figure 6] 10 is a diagram illustrating a state in which the film storage unit of the packaging mechanism is rotated relative to the first frame of the housing when the film roll is set. FIG. [Figure 7] FIG. 10 is a diagram showing a state in which an operator is gripping the grip of the first operation unit with his left hand and is about to push up the second operation unit with his thumb. [Figure 8] 10 is a diagram showing a state in which an operator is holding an operating lever with his left hand and about to push up a lock release member with his index finger in a conventional packaging device. DETAILED DESCRIPTION OF THE INVENTION

[0019] (1) Overall configuration of packaging equipment A packaging device 1 according to one embodiment of the present invention, shown in FIG. 1, is a device that weighs and then packages products P (see FIG. 2), such as vegetables and fruits. The packaging device 1 also has the function of outputting a label L, on which the price of the product and other information corresponding to the weighing result is printed, to the front side. The packaging device 1 can package products placed on a tray together with the tray. The packaging device 1 can also package products without placing them on a tray. Here, with regard to products placed on a tray, both the tray and the product (contents) placed thereon will be collectively referred to as "product." In the following description, the front-to-back, left-to-right, and up-to-down directions of the packaging device 1 will be referred to as the X direction, Y direction, and Z direction, respectively (see FIG. 1).

[0020] (1-1) The packaging device 1 includes a weighing and conveying mechanism 2, a packaging mechanism 3, a label issuing mechanism 4, a touch panel display 5, an operation panel 6, and a control unit 9 that controls these components. The control unit 9 is realized by a computer housed in a housing 10. The control unit 9 includes a control and arithmetic unit and a storage device. A processor such as a CPU or GPU can be used for the control and arithmetic unit. The control and arithmetic unit reads a program stored in the storage device and performs predetermined image processing and arithmetic processing in accordance with the program. Furthermore, the control and arithmetic unit can write the results of calculations to the storage device and read information stored in the storage device in accordance with the program.

[0021] (1-2) Weighing and conveying mechanism As shown in FIG. 2, the weighing and conveying mechanism 2 weighs the products P while conveying the products P inserted by the worker toward the packaging mechanism 3.

[0022] (1-3) Packaging mechanism The packaging mechanism 3 uses the lift unit 30 to lift the product P conveyed from the weighing and conveying mechanism 2 to the packaging area PA (see FIG. 2). At this time, the packaging mechanism 3 supplies stretch film SF to the packaging area PA. As shown in FIG. 1, the packaging mechanism 3 is provided with a film storage unit 31 that stores a film roll FR on which stretch film SF is wound in a roll. The stretch film SF is supplied to the packaging area PA from the film roll FR. The stretch film SF supplied to the packaging area PA is gripped by the front grip unit 34, rear grip unit 35, and other parts of the packaging mechanism 3. The packaging mechanism 3 lifts the product P using the lift unit 30, pushing the product P up against the stretch film SF placed in the packaging area PA and covering the product P with the stretch film SF. The packaging mechanism 3 then folds the peripheral edge of the stretch film SF under the product P covered with the stretch film SF. This packages the product P. The packaging mechanism 3 discharges the packaged product toward the discharge table 45.

[0023] As shown in FIGS. 2 and 3, the film storage section 31 is provided with a pair of support rollers 51 and 52 that support the film roll FR. The film storage section 31 also includes guide rollers 53 and 54 that guide the stretch film SF unwound from the film roll FR, and a holder 55 that hooks the leading edge of the stretch film SF when the film roll FR is set. The support rollers 51 and 52 and the guide rollers 53 and 54 each extend along the X-axis and are rotatable. The film roll FR is placed on the support rollers 51 and 52. That is, the support rollers 51 and 52 function as a placement section for the film roll FR. As shown in FIGS. 2 and 3, the guide rollers 53 and 54 are positioned slightly outboard and below the support roller 52 during packaging operations.

[0024] When the film roll FR is set in the packaging mechanism 3, an operator places the film roll FR on the pair of support rollers 51, 52, which have been moved to the maintenance position shown in Fig. 6. Then, the operator pulls out the stretch film SF from the film roll FR. The operator hooks the leading end of the pulled-out stretch film SF onto the comb-shaped holder 55 (see the two-dot chain line in Fig. 5).

[0025] (1-4) Label issuing mechanism The label issuing mechanism 4 issues a label L when the packaging mechanism 3 discharges the packaged product P onto the discharge table 45. This label L has the product's weight, price, etc. printed on it. The control unit 9 determines the weight and price based on the weighing results of the weighing and conveying mechanism 2. The label L is attached to the packaged product P by an operator.

[0026] The detailed configurations of the above-mentioned weighing and conveying mechanism 2, packaging mechanism 3, label issuing mechanism 4, display 5, operation panel 6, etc. are similar to those described in Japanese Patent Publication No. 2011-189956.

[0027] (2) Configuration related to setting of film roll in film storage unit of packaging mechanism (2-1) Configuration related to the change in the height direction of the film storage unit 3 to 6, the film accommodating section 31 of the packaging mechanism 3 has support rollers 51 and 52 that function as a loading section for loading the film roll FR, as well as a structure for maintenance purposes in which the film roll FR is loaded onto the support rollers 51 and 52. As this structure, the film accommodating section 31 has a frame 32, a link mechanism 38 that changes its position relative to the frame 32, a first operating section 60, and a second operating section 72.

[0028] As shown in FIG. 4 and other figures, the frame 32 has a main body 80 extending in the same direction as the support rollers 51 and 52, and side plates 81 and 82 extending from both ends of the main body 80. The side plates 81 and 82 pivotally support both ends of the support rollers 51 and 52. The side plates 81 and 82 also pivotally support a link mechanism 38 so that its position can be changed. The link mechanism 38 is composed of a first link member 38a, a second link member 38b, a third link member 38c, a fourth link member 38d, a fifth link member 38e, a sixth link member 38f, and multiple springs. One end of the pair of first link members 38a is pivotally supported by the side plates 81 and 82, and the other end pivotally supports the guide roller 53. The pair of second link members 38b is pivotally supported by the side plates 81 and 82, and the other end pivotally supports one end of the fourth link member 38d. One end of each of the pair of third link members 38c is pivotally supported by the side plates 81 and 82 near the end of the support roller 51, and the other end pivotally supports one end of the fifth link member 38e. Each of the pair of fourth link members 38d is pivotally supported by the other end of the second link member 38b, and the other end is pivotally supported at the center of the fifth link member 38e. The other ends of the pair of fifth link members 38e are fixed to both ends of the holding portion 55. As described above, the holding portion 55 holds the leading end of the stretch film SF unwound from the film roll FR. The sixth link member 38f is an L-shaped member, and one end of the sixth link member 38f is pivotally supported by a rod 38g and a nut in a slot 81a formed in the side plate 81. The rod 38g, which is fixed to one end of the sixth link member 38f and passes through the slot 81a, can move to one end and the other end of the slot 81a shown in FIG. 5. A central portion 38f1 of the sixth link member 38f is pivotally supported by a central portion of the second link member 38b. A second operating portion 72 is fixed to the other end of the sixth link member 38f.

[0029] When the link mechanism 38 is in the maintenance posture shown in FIGS. 4 and 5, it functions as a restricting member that restricts the holding portion 55 from moving due to gravity from the height position shown in FIGS. 4 and 5 to the height position shown in FIG. 3. When the link mechanism 38 is in the maintenance posture shown in FIGS. 4 and 5, the rod 38g at the other end of the sixth link member 38f of the link mechanism 38 is supported by the side plate 81 via the elongated hole 81a in the side plate 81. As shown in FIG. 5, in a side view, the rod 38g is positioned closer to the holding portion 55 than the center portion 38f1 of the sixth link member 38f (in the Y direction). In this state, the center portion 38f1 of the sixth link member 38f and the rod 38g restrict the center portion of the second link member 38b from moving downward. As a result, even if gravity acts on the components of the link mechanism 38, the guide rollers 53 and 54, and the holding portion 55, the sixth link member 38f functions as a restricting member, and the posture shown in FIGS. 4 and 5 is maintained.

[0030] The first operating unit 60 is operated by an operator. The first operating unit 60 moves the holding unit 55 between a first height position (the height position of the holding unit 55 shown in FIG. 5 ) when the film roll FR is placed on the support rollers 51, 52 in the maintenance position and a second height position (the height position of the holding unit 55 shown in FIG. 3 ) when the holding unit 55 is in operation to perform the packaging operation. The first operating unit 60 has a grip 61 extending horizontally. Therefore, as shown in FIG. 7 , the operator naturally grasps the grip 61 with the index finger, middle finger, ring finger, and little finger of their left hand. The first operating unit 60 is pivotally supported on the side plate 81 near the end of the support roller 51 by a rotating member 64. When the operator grasps the grip 61 of the first operating unit 60 in the operation state shown in FIG. 3 and pulls it toward them, the rotating member 64 and the second link member 38b rotate around the central axis 51a of the support roller 51, which extends horizontally. As a result of this rotation, the first operating unit 60, link mechanism 38, second operating unit 72, guide rollers 53 and 54, holding unit 55, etc. change from the position shown in Fig. 3 to the position shown in Fig. 5. As a result of this rotation, holding unit 55 is raised from the low height position (second height position) shown in Fig. 3 to the high height position (first height position) shown in Fig. 5. The trajectory of grip 61 in a side view is an arc centered on central axis 51a of support roller 51.

[0031] The sixth link member 38f of the link mechanism 38 described above serves to prevent the holding part 55, which has been raised from the low height position (second height position) shown in FIG. 3 to the high height position (first height position) shown in FIG. 5 by pulling the first operating part 60, from returning due to gravity to the original second height position shown in FIG. 3.

[0032] As described above, the second operating part 72 is fixed to the other end of the sixth link member 38f. The second operating part 72 has a wide surface that the operator's thumb rests against. In the maintenance posture (the posture shown in FIGS. 4 and 5), the second operating part 72 is positioned at a position where the operator's thumb rests when the operator grips the grip 61 of the first operating part 60. The second operating part 72 is operated by the operator's thumb and serves to release the restriction imposed by the sixth link member 38f of the link mechanism 38. In the posture shown in FIG. 5, when the operator grips the grip 61 and pushes up the second operating part 72 with their thumb as shown in FIG. 7, the L-shaped sixth link member 38f rotates slightly about the central portion 38f1, and the rod 38g fixed to one end of the sixth link member 38f slides within the elongated hole 81a of the side plate 81. This releases the restrictive force exerted by the sixth link member 38f to maintain the posture shown in FIGS. 4 and 5. When the operator moves the first operating unit 60 forward, the link mechanism 38, the second operating unit 72, the guide rollers 53 and 54, the holding unit 55, etc. change from the position shown in Fig. 5 (the position during maintenance) to the position shown in Fig. 3 (the position during operation). At this time, as the restricting force of the sixth link member 38f is released, the gravity of the holding unit 55 and the guide rollers 53 and 54 acts on the operator's hand holding the grip 61 via the link mechanism 38. However, because the operator is firmly holding the grip 61 with four fingers as shown in Fig. 7, the first operating unit 60 rarely comes off the operator's hand H.

[0033] (2-2) Configuration related to the change in posture of the film storage unit along the horizontal plane After the holding unit 55 and the guide rollers 53, 54 are in the maintenance height position shown in FIG. 4 , the operator can rotate the film accommodating unit 31 horizontally relative to the stationary housing 10 of the packaging device 1 by pulling the grip 61 of the first operating unit 60 toward himself / herself in the horizontal direction. The frame 32 of the film accommodating unit 31 and the components of the film accommodating unit 31 supported by the frame 32 rotate around the vertically extending rotation axis 10b, as shown in FIG. 6 . The operator can rotate the film accommodating unit 31 horizontally relative to the housing 10 by loosening the screws that secure the frame 32 of the film accommodating unit 31 to the housing 10 of the packaging device 1. That is, the frame 32 of the film accommodating unit 31 is rotatably supported by the flat plate 10a of the housing 10.

[0034] 6, when the film accommodating section 31 is rotated relative to the stationary housing 10 of the packaging device 1, the film accommodating section 31 moves toward the operator. This makes it easier to place the film roll FR on the support rollers 51 and 52 and to hold the leading edge of the stretch film SF pulled out from the film roll FR in the holding section 55.

[0035] (2-3) Configuration for stepless adjustment of the stopper of the film roll in the film storage section FIG. 4 shows stoppers 95 and 96 against which the side surfaces of the film roll FR come into contact when the film roll FR is placed on the support rollers 51 and 52.

[0036] The installation position of a film roll with a stretch film width ranging from 350 mm to 500 mm is based on the center of the packaging device in the X direction. For this reason, stoppers have traditionally been provided on both sides of the area where the film roll is placed to regulate the side surfaces of the film roll. Conventional stoppers have elongated holes through which screws are passed. The stoppers can then be moved relative to the screws, allowing them to be fixed at any desired position with the screws.

[0037] However, when replacing a film roll, the new film roll is placed in the designated position, then moved horizontally and pressed against one of the stoppers. The impact of the film roll being pressed against the stopper can cause the stopper to shift out of position. This can prevent the film roll from being set in the correct position, and if the machine is started without noticing this, it can result in defective packaging.

[0038] In consideration of these problems with conventional stoppers, in the packaging device 1, one stopper 95, which presses against the side of the film roll FR, is fixed at a position corresponding to the width of the stretch film SF. Specifically, several screw holes are formed in the stopper 95 for fixing, and one of these screw holes is selected and used to fix the stopper 95 to the main body 80 of the frame 32 with a screw so that the stopper 95 does not move. Meanwhile, the stopper 96 on the opposite side has a slot 96a for stepless adjustment. The worker first presses one side of the film roll FR against the fixed stopper 95, and then adjusts the position of the opposite stopper 96 using the slot 96a. This eliminates the problems with conventional stoppers.

[0039] (3) Characteristics of the packaging equipment (3-1) FIG. 8 shows a rod-shaped operating lever 161 gripped by an operator, which functions the same as the grip 61, and an unlocking member 172, which functions the same as the second operating unit 72, in a conventional packaging device. With this packaging device, when an operator grips the operating lever 161, which extends vertically, it is difficult to intuitively determine whether to move the operating lever 161 left or right or back and forth. Furthermore, with conventional packaging devices, an operator gripping the operating lever 161 stretches the index finger of their left hand forward to push the unlocking member 172 upward, as shown in FIG. 8. In this case, the index finger may come off the operating lever 161, causing the operator to be unable to support the weight of the holding unit and guide rollers acting during unlocking, leading to the operator releasing the operating lever 161. This may require the operator to redo the loading of the film roll FR.

[0040] On the other hand, in the packaging device 1 according to the present embodiment, the grip 61 held by the operator extends horizontally, allowing the operator to intuitively grasp the operation (operation direction) of pushing or pulling the grip 61 (see FIG. 7 ). Furthermore, in the packaging device 1 in which the link mechanism 38 and the holding unit 55 are in the maintenance position, the second operating unit 72 is positioned at a position where the operator's thumb comes into contact when gripping the grip 61. Therefore, even when operating the second operating unit 72, the operator's grip on the grip 61 is less likely to relax. Thus, in the packaging device 1, when the operator grips the horizontally extending grip 61, the second operating unit 72 is positioned at a position where the thumb comes into contact. Therefore, the operator can release the restriction with the thumb while still holding the grip 61 with the four fingers other than the thumb. In other words, the packaging device 1 provides a natural operational feel when operating the first operating unit 60 and the second operating unit 72.

[0041] (3-2) In the packaging device 1 according to this embodiment, when an operator operates the second operating unit 72 to release the restricting force of the sixth link member 38f that maintains the position shown in Figures 4 and 5, the holding unit 55 and other components move naturally by gravity from the first height position shown in Figure 5 to the second height position shown in Figure 3. Therefore, if the grip 61 were structured so that the operator could easily release their grip, there is a risk that the holding unit 55 and other components would move forcefully from the first height position to the second height position when the restricting force of the second operating unit 72 is released. However, because the packaging device 1 employs a structure that makes it difficult for the operator to release their grip on the grip 61, the operator's strength can easily suppress sudden movements of the holding unit 55 and other components.

[0042] (4) Variations (4-1) Variation A In the packaging device 1 described above, a configuration is adopted in which the second operating unit 72 is operated with the thumb, but if the grip 61 extends horizontally, even if an arrangement is adopted in which the second operating unit 72 is operated with fingers other than the thumb, the worker is less likely to lose strength when gripping the grip 61. A configuration in which the second operating unit 72 is operated with the thumb is preferable, but a configuration in which the second operating unit 72 is operated with the index finger is also possible.

[0043] (4-2) Variation B In the packaging device 1 described above, when the restricting force of the sixth link member 38f is released, the gravity of the holding portion 55 and the guide rollers 53, 54 acts on the hand H of the operator gripping the grip 61 via the link mechanism 38. However, as shown in FIG. 7, because the operator is firmly gripping the grip 61 with four fingers, the first operating portion 60 rarely comes off the operator's hand H.

[0044] However, it is preferable to reduce the burden on the worker when the weight of the holding part 55 and the guide rollers 53 and 54 is heavy. If the first operating part 60 is released from the worker's hand H, the holding part 55 may collide with other parts, causing deformation or damage to the parts.

[0045] In Modification B, a torque limiter 99 is provided that functions as a braking unit so that the speed of movement of the holding unit 55 and other components from the first height position to the second height position due to gravity is suppressed without relying on the strength of the operator gripping the grip 61. For example, if the torque limiter 99 is provided at the location where the second link member 38b is pivotally supported on the side plate 82 (see the two-dot chain line in FIG. 4), sudden movement of the holding unit 55 and other components due to their own weight is suppressed. It is preferable to use a one-way torque limiter as the torque limiter 99. [Explanation of symbols]

[0046] 1 Packaging equipment 10b Rotation axis (second rotation axis) 31 Film storage section 38 Link mechanism (regulating part) 38f 6th link member (restriction part) 51 Support roller (mounting portion) 51a: central axis (first rotation axis) of the support roller 51 52 Support roller (mounting section) 55 Holding part 60 1st operation section 61 Grip 64 Rotating member 72 2nd operation section 99 Torque limiter (braking part) [Prior art documents] [Patent documents]

[0047] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-191905

Claims

1. a placement section on which a film roll is placed; a holding section that holds a leading end of the film unwound from the film roll; a first operating unit that is operated by an operator and moves the holding unit in a first direction between a first height position when the film roll is placed on the placement unit and a second height position when the film roll is wrapped; a restricting portion that restricts the holding portion from moving from the first height position to the second height position; a second operating portion that is operated by the operator in a direction different from the first direction and releases the restriction of the holding portion by the restricting portion; Equipped with the first operating portion has a grip extending horizontally, the second operating portion is disposed at a position where the thumb of the operator comes into contact with the second operating portion when the operator grips the grip; packaging equipment.

2. a movement trajectory of the second operation unit is different from a movement trajectory of the grip of the first operation unit; The packaging device of claim 1 .

3. the second operating portion is pressed by the thumb of the operator holding the grip, thereby releasing the restriction of the holding portion by the restricting portion. The packaging device of claim 2.

4. the restricting portion restricts the holding portion from moving from the first height position to the second height position due to gravity.

4. The packaging device according to claim 1.

5. a braking unit that suppresses a speed of movement of the holding unit from the first height position to the second height position due to gravity after the second operating unit releases the restriction of the holding unit by the restricting unit; The packaging device of claim 4 further comprising:

6. a rotating member that rotates about a first rotation axis extending in the horizontal direction; Furthermore, the first operating portion is fixed to the rotating member, When the first operating unit is operated by the worker and the first operating unit and the rotating member move, the holding unit moves from the second height position to the first height position in response to the movement of the rotating member.

6. The packaging device according to claim 1.

7. The placement portion, the holding portion, the first operating portion, the restricting portion, and the second operating portion are rotatable about a second rotation axis extending in a vertical direction, and are configured so that the operator can grasp the grip of the first operating portion and pull it closer to the operator.

7. The packaging device according to claim 1.

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