Packaging equipment

Abstract

To provide a packaging device that prevents a tilted lift head from hitting a product during film folding.SOLUTION: In a packaging device 10, a second head 322 is prevented from hitting a product even if the second head 322 tilts toward a first head 321 in a state where the product is on the first head 321 only by making a height position of a convex portion 35a of the first head 321 (height position of a convex surface) substantially equal to a height position of a convex portion 37a of the second head 322 (height position of a convex surface).SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a packaging device, and more particularly to a packaging device that performs a packaging operation in which the peripheral portion of a film pressed against an item to be packaged is folded toward the bottom of the item. [Background technology]

[0002] In recent years, packaging devices have become widespread in which a surface on which a product is placed is raised relative to a film, and then folding members fold the film beneath the product. For example, in the packaging device disclosed in Patent Document 1 (JP 2011-189956 A), a product is placed on multiple lift heads aligned in a unidirectional manner, and the lift heads are raised relative to the film. The upper halves of all lift heads except the central lift head can be tilted inward. The left folding member slides under the product while tilting inward the upper halves of the multiple lift heads located to the left of the central lift head. The right folding member slides under the product while tilting inward the upper halves of the multiple lift heads located to the right of the central lift head. This allows both left and right ends of the film to be folded beneath the product. Summary of the Invention [Problem to be solved by the invention]

[0003] In the device described above, in order to package long cylindrical products (cucumbers, carrots, etc.), the center of the lift head is lowered and the product is supported by the left and right lift heads, and multiple recesses are provided on the product placement surface of the lift head to prevent the product from rolling.

[0004] However, cylindrical sliced ​​products may only be placed on the central lift head among multiple lift heads, and if the lift heads other than the central lift head tilt due to the entry of the folding member when folding the film, the tilted lift head may hit the product held on the central lift head one level lower, causing the product to become misaligned.

[0005] An object of the present invention is to provide a packaging device that prevents a tilted lift head from hitting a product when folding a film. [Means for solving the problem]

[0006] A packaging device according to a first aspect includes a lift head on which products are placed, and a packaging unit. A plurality of lift heads are arranged in a second direction perpendicular to a first direction in which the products are fed, and each lift head has an upper surface formed with an uneven surface along the first direction to prevent the products from rolling. The packaging unit covers the products on the lift head with film, and then folds the film under the products using a folding member that moves along the second direction. The plurality of lift heads includes a first head and a plurality of second heads arranged in the second direction around the first head. The second heads are configured to be tiltable toward the first head. The height position of the convex surface of the first head is substantially equal to the height position of the convex surface of the second head.

[0007] In this packaging device, by making the height position of the convex surface of the first head and the height position of the convex surface of the second head substantially equal, even if the second head tilts toward the first head when the product is placed only on the first head, the second head is prevented from hitting the product.

[0008] A packaging device according to a second aspect is the packaging device according to the first aspect, wherein the difference between the height position of the convex surface of the first head and the height position of the convex surface of the second head is within a range of ±2 mm.

[0009] A packaging device according to a third aspect is the packaging device according to the first or second aspect, wherein when the second head is tilted toward the first head, the second head does not interfere with the first head.

[0010] In this packaging device, even if the second head tilts, it will not reach the first head, so even when the product is placed on only the first head, by making the height position of the convex surface of the first head and the height position of the convex surface of the second head substantially equal, the second head is prevented from hitting the product even if it tilts toward the first head.

[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 product to be packaged is a cylindrical vegetable.

[0012] In this packaging device, even when cylindrical sliced ​​vegetables such as radish, lotus root, or yam are placed on only the first head, the height position of the convex surface of the first head and the height position of the convex surface of the second head are made substantially equal, so that even if the second head is tilted toward the first head, the second head is prevented from hitting the cylindrical sliced ​​products.

[0013] A packaging device according to a fifth aspect is the packaging device according to any one of the first to fourth aspects, wherein two adjacent convex surfaces in the first direction have a gap sufficient to support at least cylindrical vegetables. [Effects of the Invention]

[0014] In the packaging device of the present invention, by making the height position of the convex surface of the first head and the height position of the convex surface of the second head substantially equal, even if the second head tilts toward the first head when the product is placed only on the first head, the second head is prevented from hitting the product. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. [Figure 2] 1 is a schematic front view of the packaging device (viewed from the arrow SS in FIG. 1). [Figure 3A] A diagram showing the left and right folding operation of the film (film transport stage). [Figure 3B]Diagram showing the left and right folding action of the film (film pre-stretch stage). [Figure 3C] A diagram showing the film folding operation to the left and right (product pushing up stage). [Figure 3D] Diagram showing the left and right folding action of the film (form folding stage). [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. [Figure 7A] A side view of a conventional Type I lift head viewed from the second head side toward the first head. [Figure 7B] 7B is a schematic front view of the lift head of FIG. 7A. [Figure 8A] FIG. 1 is a side view of a conventional Type II lift head viewed from the second head side toward the first head. [Figure 8B] 8B is a schematic front view of the lift head of FIG. 8A. [Figure 9A] FIG. 2 is a side view of the type III lift head according to the present embodiment, viewed from the second head side toward the first head. [Figure 9B] 9B is a schematic front view of the lift head of FIG. 9A. DETAILED DESCRIPTION OF THE INVENTION

[0016] (1) Overall configuration of packaging equipment 1 and 2 are schematic side and front views, respectively, of a packaging device according to one embodiment of the present invention.

[0017] 1 and 2, the packaging device 10 packages fruits and vegetables without a tray, or packages food products (products) such as fruits and vegetables contained in a soft tray. However, it is also possible to package products placed on a regular foam tray.

[0018] The packaging device 10 includes a main body frame 15, a product conveying mechanism 20, a lifting mechanism 30, a film conveying mechanism 40, a film holding mechanism 50, a film left-right pushing mechanism 60, a left-right folding mechanism 66, and a front-rear folding mechanism 70.

[0019] An operator manually places a product G on a scale 29 equipped with a fork-shaped weighing pan 21. When the scale 29 has completed weighing the product G, the product conveying mechanism 20 is activated, and the multiple support plates 21a of the product conveying mechanism 20 rise from between the fork-shaped weighing pans 21, thereby lifting the product G on the weighing pan 21. The support plates 21a then move horizontally in the Y direction. When the support plates 21a reach above the lift mechanism 30, they descend and place the product G on the support plates 21a onto the lift heads 32 of the lift mechanism 30.

[0020] 3A to 3D are diagrams showing the left and right folding operation of film F. In Fig. 3A, film F is transported above lift mechanism 30. In Fig. 3B, film F is pre-stretched with its front, rear, left and right edges held.

[0021] 3C, a product G supported by the lift head 32 is pushed up against the pre-stretched film F. With the film F pushed up, the product G is covered from above and on the sides by the film F.

[0022] In FIG. 3D, the peripheral portion of the film F that covers the top and sides of the product G is folded toward the bottom of the product G by the left folding plate 64, the right folding plate 65, and the rear folding plate 71 (see FIG. 1).

[0023] During the folding operation, the left and right folding plates 64, 65 enter near the left and right ends of the bottom of the product G and support the bottom of the product G together with the lift head 32 of the lift mechanism 30.

[0024] (2) Composition of each part (2-1) Product transport mechanism 20 1, the product conveying mechanism 20 is configured to support the products G using a plurality of support plates 21a arranged in a second direction (left-right direction) perpendicular to a first direction (Y direction) in which the products G are conveyed. The support plates 21a are arranged at predetermined intervals in the left-right direction so that they can move up and down between the forks of the fork-shaped weighing pan 21 and between the lift heads 32 of the lift mechanism 30.

[0025] A weighing scale 29 is placed below the weighing pan 21 to measure the weight of the product G placed on the weighing pan 21, and a reciprocating mechanism (not shown) is placed in a position not in contact with the weighing scale 29 to move each support plate 21a of the product conveying mechanism 20 in a rectangular manner from the weighing scale 29 to the lift mechanism 30.

[0026] Specifically, each support plate 21a waits below the level of the weighing dish 21, and when the weighing of the product G by the weighing device 29 is completed, each support plate 21a rises to a level one step higher than the level of the weighing dish 21, lifts the product G on the weighing dish 21, and moves in that state in the first direction (Y direction).

[0027] When each support plate 21a moving in the first direction (Y direction) reaches the lift head 32, it descends between the lift heads 32 and transfers the product G on the support plate 21a onto the lift head 32. Then, it descends to a level one step lower than the level of the lift head 32, and then returns to its initial position at the front while maintaining that state, and stops. Therefore, the multiple support plates 21a are configured to move up and down and in the first direction (front-back direction) by getting between the forks of the weighing pan 21 and between the multiple lift heads 32. As a result, the product G placed on the weighing pan 21 is sent onto the lift head 32 of the lift mechanism 30.

[0028] (2-2) Lift mechanism 30 The lift mechanism 30 supports the bottom of the product G sent from the product conveying mechanism 20 and lifts the product G upward. The lift mechanism 30 also supports the bottom of the product G when the peripheral portion of the film F is folded toward the bottom of the product G.

[0029] As shown in FIG. 2, the lift mechanism 30 includes a plurality of lift heads 32 arranged in the X direction and a support portion 31 that supports the plurality of lift heads 32.

[0030] When products G are loaded onto the multiple lift heads 32, the lift heads 32 rise, and the products G on the lift heads 32 push up the film F, as shown in Fig. 3C. When the products G push up the film F, the film F is unwound from the film roll R.

[0031] In addition, the lift mechanism 30 is configured so that, of the multiple lift heads 32 arranged in a second direction (X direction) perpendicular to the first direction (Y direction) in which the product G is fed, the upper halves of the lift heads 32 other than the central lift head are tilted inward.

[0032] 3D, the left folding plate 64 moves inwardly to slide under the products G while tilting inward the upper halves of the multiple lift heads 32 located to the left of the central lift head 32. The right folding plate 65 moves inwardly to slide under the products G while tilting inward the upper halves of the multiple lift heads 32 located to the right of the central lift head 32.

[0033] As a result, even when the product G is supported by a plurality of lift heads 32, both ends of the film F in the X direction can be folded under the product G.

[0034] (2-3) Film transport mechanism 40 The film transport mechanism 40 transports the film F above the lift mechanism 30, and then the film F is pulled and held by the film holding mechanism 50.

[0035] The film transport mechanism 40 includes a roll holding unit 41 and a front clamp 54. The roll holding unit 41 rotatably supports the film roll R with a pair of free rollers spaced apart from each other in the front and rear. The front clamp 54 moves in a first direction (rearward) to grab the leading end of the film F held by the rear clamp 53 and pull it forward in the first direction. For this reason, the front clamp 54 is connected to a timing belt below and is configured to be movable in the Y direction (front-to-back direction).

[0036] (2-4) Film holding mechanism 50 The film holding mechanism 50 includes a front clamp 54 and a rear clamp 53 of the film transport mechanism 40, and a left clamp 51 and a right clamp 52 that are arranged in a direction perpendicular to the front clamp 54 and rear clamp 53.

[0037] The film holding mechanism 50 grips the peripheral portion of the film F when the product G is pushed up by the lift mechanism 30, and when the product G is pushed up and tension is applied to the film F, it moves inward to adjust the tension.

[0038] (2-5) Film left and right pushing mechanism 60 The film left / right pushing mechanism 60 includes a left pushing member 61 and a right pushing member 62. The left pushing member 61 and the right pushing member 62 can be moved left and right by motor drive.

[0039] Furthermore, left pushing member 61 and right pushing member 62 grip film F by sandwiching film F between left clamp 51 and right clamp 52 which move up and down.

[0040] (2-6) Left and right folding mechanism 66 The left and right folding mechanism 66 includes a left folding plate 64 and a right folding plate 65. The left folding plate 64 and the right folding plate 65 can be moved left and right by motor drive.

[0041] The left folding plate 64 and the right folding plate 65 are disposed above the left pushing member 61 and the right pushing member 62, and support the product G from below when the rear folding plate 71 folds the film.

[0042] (2-7) Front and rear folding mechanism 70 The front and rear folding mechanism 70 includes a rear folding plate 71 and heat sealing means (not shown). The rear folding plate 71 is disposed in the height direction between the left pushing member 61 and the right pushing member 62 and the left folding plate 64 and the right folding plate 65. The rear folding plate 71 folds the film F from behind toward the bottom side of the product G and applies the pressing force required to heat seal the film F to the film F. The rear folding plate 71 can be moved back and forth by a motor.

[0043] (3) Details of Lift Head 32 Fig. 4 is a perspective view of the lift head 32. In Fig. 3, the lift head 32 includes a first head 321 in the center and multiple second heads 322 on both sides thereof, and an uneven surface that prevents the products G from rolling is formed on the upper surfaces of the heads along a first direction (Y direction). Each lift head 32 extends in the first direction (Y direction) in which the products G are fed, and the central first head 321 among them is disposed in the center in a second direction perpendicular to the first direction, and multiple second heads 322 are arranged on both sides thereof in the second direction (-X direction and X direction).

[0044] The distance between the first head 321 and the adjacent second head 322 is equal to the distance between the adjacent second heads 322.

[0045] (3-1) First head 321 Fig. 5 is a perspective view of the first head 321. In Fig. 5, the first head 321 has a pair of central support parts 34a spaced apart in the X direction, a pair of side parts 34b spaced apart in the Y direction, and one fixing part 34c that fixes these together.

[0046] (3-1-1) Central support part 34a The pair of central support portions 34a are disposed symmetrically with respect to an imaginary center line Ly of the first head 321 extending in the Y direction as shown in FIG.

[0047] The first surface 35 forming the upper surface of the central support portion 34a is an uneven surface, and the protrusions 35a and the recesses 35b are formed alternately so that the recesses 35b are located in the center of the first surface 35 in the Y direction.

[0048] In addition, the protrusions 35a and the ends 35c are arranged in order in the Y direction when viewed from the central recess 35b, and similarly, the protrusions 35a and the ends 35c are arranged in order in the -Y direction when viewed from the central recess 35b.

[0049] Ends 35c are located at both ends of first surface 35. The height position of the upper surface of end 35c is lower than the height position of the apex of convex portion 35a and higher than the height position of the bottom surface of concave portion 35b.

[0050] (3-1-2) Side portion 34b The pair of side portions 34b are arranged symmetrically with respect to an imaginary center line Lx extending in the X direction as shown in FIG. 5, and sandwich the central support portion 34a from the -Y direction and the Y direction.

[0051] The upper surfaces of the side portions 34b are inclined toward the central support portion 34a so that a cylindrical product placed on the upper surface will roll toward the central support portion 34a.

[0052] (3-1-3) Fixed part 34c The fixing portion 34c fixes the pair of central support portions 34a and the pair of side portions 34b. The fixing portion 34c is attached to the support portion 31.

[0053] (3-2) Second head 322 Fig. 6 is a perspective view of the second head 322. In Fig. 6, the second head 322 has a support portion 36a, a fixed portion 36b, a pin 36c, and a torsion coil spring 36d.

[0054] (3-2-1) Support part 36a The second surface 37 forming the upper surface of the support portion 36a is an uneven surface formed along the first direction (Y direction), and convex portions 37a and concave portions 37b are formed alternately so that the concave portion 37b is located in the center of the second surface 37 in the Y direction.

[0055] When viewed from the central recess 37b, the convex portions 37a, recess 37b, convex portion 37a, recess 37b, and convex portion 37c are arranged in this order in the Y direction, and similarly, when viewed from the central recess 35b, the convex portions 37a, recess 37b, convex portion 37a, recess 37b, and convex portion 37c are arranged in this order in the -Y direction. The convex portions 37c on both ends have upper surfaces that are longer in the Y direction than the other convex portions 37a.

[0056] (3-2-2) Fixing portion 36b, pin 36c, and torsion coil spring 36d The support portion 36a is rotatably connected to the fixed portion 36b via a pin 36c. A torsion coil spring 36d is inserted through the pin 36c. One end of the torsion coil spring 36d contacts the support portion 36a, and the other end contacts the fixed portion 36b, acting to hold the support portion 36a in an upright position.

[0057] The support portion 36a normally maintains the position shown in Figure 6, but when the support portion 36a is pushed toward the first head 321, the support portion 36a can rotate around the pin 36c against the spring force of the torsion coil spring 36d.

[0058] Therefore, even if the left folding plate 64 and the right folding plate 65 hit the support portion 36a when they move, the movement of the left folding plate 64 and the right folding plate 65 is not hindered by the tilting of the support portion 36a.

[0059] In addition, the distance between the first head 321 and the second head adjacent to the first head 321 is set to a distance that prevents the support portion 36a from colliding with the first head 321 even if the left folding plate 64 and the right folding plate 65 hit the support portion 36a and cause the support portion 36a to tilt.

[0060] (3-3) Relationship between the height positions of the top surface of the first head 321 and the top surface of the second head 322 Regarding the height positions of the upper surfaces of the first head 321 and the second head 322, prototypes were made in two types: I) a type in which the first surface 35 of the central support portion 34a is not provided with any irregularities, and the height level of the central support portion 34a is lower than the height position of the convex portion 37a of the second head 322, and II) a type in which the height position of the entire first surface 35 is approximately the same height position as the convex portion 37a of the second head 322, or slightly higher.

[0061] (3-3-1) Type I Fig. 7A is a side view of the Type I lift head 32 viewed from the second head 322 side toward the first head 321. Fig. 7B is a schematic front view of the lift head 32 of Fig. 7A.

[0062] 7A and 7B, the first surface 35 of the first head 321 is lower than the second surface 37 of the second head 322 and is therefore hidden by the second head 322. In the case where the product G is a long, cylindrical product that straddles the second heads 322 located on the left and right of the first head 321, the product G is supported by the recesses 37b of the second heads 322 and is therefore stable.

[0063] In addition, in Type I, the height level of the first surface 35 of the first head 321 is set lower than the height position of the convex portion 37a of the second head 322, so even when a round fruit such as an apple is placed on the lift head 32, the round fruit moves to the central support portion 34a and its posture becomes stable.

[0064] However, when the product G is a cylindrical product such as a sliced ​​radish and is short in length, as shown in Figure 7B, the distance between the first head 321 and the adjacent second head 322 is shorter than the distance between the first head 321 and the adjacent second head 322, so the product G is supported only by the central support portion 34a of the first head 321. At this time, if the second head 322 falls due to the movement of the left folding plate 64 and the right folding plate 65, the convex portion 37a of the second head 322 may hit the end face of the cylindrical sliced ​​product G, causing the product G to lose its position or be thrown off.

[0065] (3-3-2) Type II Fig. 8A is a side view of the Type II lift head 32 viewed from the second head 322 side toward the first head 321. Fig. 8B is a schematic front view of the lift head 32 of Fig. 8A.

[0066] 8A and 8B, the first surface 35 of the first head 321 is at the same height as the convex portion 37a of the second head 322 or is slightly higher.

[0067] In type II, even if the second head 322 falls over, the convex portion 37a of the second head 322 will not come into contact with the end face of the product G, but the cylindrical sliced ​​product G placed on the first surface 35 is prone to rolling and its posture is unstable.

[0068] (3-3-3) In the present embodiment Therefore, based on the prototype results of Type I and conventional Type II, in Type III, which is an embodiment of the present invention, the first surface 35 of the first head 321 is also provided with an uneven surface that is approximately in phase with the uneven surface of the second surface 37 of the second head 322, and the height position of the convex portion 35a of the first head 321 is made substantially equal to the height position of the convex portion 37a of the second head 322.

[0069] Fig. 9A is a side view of the Type III lift head 32 according to this embodiment, viewed from the second head 322 side toward the first head 321. Fig. 9B is a schematic front view of the lift head 32 of Fig. 9A.

[0070] In FIGS. 9A and 9B, cylindrical round-cut products G fit into the recesses of the first head 321, so even short round-cut products G that do not reach the second head 322 remain stable and do not roll.

[0071] Here, the height position of the convex portion 35a refers to the height position of the convex surface of the convex portion 35a, and the height position of the convex portion 37a of the second head 322 refers to the height position of the convex surface of the convex portion 37a.

[0072] Specifically, "substantially equal" means that the difference in height between the convex portion 35a of the first head 321 and the convex portion 37a of the second head 322 is within ±2 mm, for example. Within this range, the device can be used without any problems for various sliced ​​products sold in supermarkets, for example. In other words, even if the second head 322 is tilted with a cylindrical sliced ​​product placed only on the first head 321, the problem of the convex portion 37a of the second head 322 hitting the end face of the cylindrical sliced ​​product G is avoided.

[0073] (4) Operation of the packaging device 10 Among the operations of the packaging device 10, the operation of folding the film F from the left and right sides toward the bottom of the product G will be described in detail.

[0074] (4-1) Folding and pushing operations from the left and right 3A, when film F is transported above lift mechanism 30, left clamp 51 and right clamp 52 rise to grip the left and right portions of film F between left pushing member 61 and right pushing member 62. At this time, the front and rear portions of film F are also gripped by front clamp 54 and rear clamp 53 shown in FIG.

[0075] Next, as shown in Fig. 3B, left pushing member 61 and right pushing member 62 and the following left clamp 51 and right clamp 52 open outward, and film F is pre-stretched in the left-right direction. At this time, film F is also pre-stretched in the front-rear direction.

[0076] 3C, the lift mechanism 30 raises the product G via the lift head 32 on the pre-stretched and wrinkle-free film F, creating a state in which the film F is pushed up by the product G. At this time, the product G is covered from above and on the sides by the film F, with the film F pushed up.

[0077] When the product G pushes up the film F, the left folding plate 64 and the right folding plate 65 move inward first and fold the film, and a little later the left pushing member 61, the right pushing member 62 and the rear folding plate 71 also move inward.

[0078] 3D, the left folding plate 64 and the right folding plate 65 stop moving when they reach a position inward where they can support the bottom of the product G. As the left folding plate 64 and the right folding plate 65 move inward, the support portions 36a of the second head 322 are pushed by the left folding plate 64 and the right folding plate 65 in order from the outermost one, and rotate around the pin 36c to fall inward.

[0079] The left pushing member 61 and the right pushing member 62 and the following left clamp 51 and right clamp 52 move inward following the left folding plate 64 and the right folding plate 65 so that excessive tension is not applied to the film F due to the movement of the left folding plate 64 and the right folding plate 65, and at an appropriate position the left and right clamps 51, 52 are lowered to release the grip on the left and right portions of the film F.

[0080] (4-2) Post-folding operation After the left and right folding operations described above, the product G is in a state where it is supported by the central support portion 34a, the support portion 36a, the left folding plate 64, and the right folding plate 65.

[0081] In the rear folding operation, the rear folding plate 71 moves forward first, followed a short time later by the rear clamp 53. After this, the rear clamp 53 moves forward in accordance with the movement of the rear folding plate 71 so as not to apply excessive tension to the film F.

[0082] The rear folding plate 71 folds the rear end of the film F under the product G, and sandwiches the film F under the product G and heat seals it.

[0083] (5) Features (5-1) In the packaging device 10, by making the height position (height position of the convex surface) of the convex portion 35a of the first head 321 and the height position (height position of the convex surface) of the convex portion 37a of the second head 322 substantially equal, even if the second head 322 tilts toward the first head 321 when the product is placed only on the first head 321, the second head 322 is prevented from hitting the product.

[0084] (5-2) The difference between the height position of the convex portion 35a of the first head 321 and the height position of the convex portion 37a of the second head 322 is within the range of ±2 mm.

[0085] (5-3) When the second head 322 is tilted toward the first head 321 , the second head 322 does not interfere with the first head 321 .

[0086] (5-4) In the packaging device 10, even when cylindrical sliced ​​vegetables such as radish, lotus root, yam, etc. are placed on only the first head 321, the height position of the convex portion 35a of the first head 321 and the height position of the convex portion 37a of the second head 322 are made substantially equal, so that even if the second head 322 is tilted toward the first head 321, the second head 322 is prevented from hitting the cylindrical sliced ​​products G.

[0087] (5-5) In the packaging device 10, two adjacent protrusions in the product feeding direction have a gap large enough to support at least a cylindrical vegetable, such as a cucumber. [Explanation of symbols]

[0088] 10 Packaging equipment 30 Lift mechanism 32 Lift Head 321 First Head 322 No. 2 Head 35a Convex part (uneven surface) 35b Concave (uneven surface) 37a Convex part (uneven surface) 37b Concave (uneven surface) 50 Film holding mechanism (packaging section) 60 Film left and right pushing mechanism (packaging section) 66 Left and right folding mechanism (packaging section) 70 Front and rear folding mechanism (packaging section) F film G product [Prior art documents] [Patent documents]

[0089] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-189956

Claims

1. a plurality of lift heads arranged in a second direction perpendicular to a first direction in which the products are fed, each having an upper surface formed with a concave-convex surface along the first direction to prevent the products from rolling; a packaging unit that covers the product on the lift head with a film and then folds the film under the product using a folding member that moves along the second direction; Equipped with The plurality of lift heads include: A first head; a plurality of second heads arranged in the second direction around the first head; Including, the second head is configured to be tiltable toward the first head, an upper surface of the first head and an upper surface of the second head are made uneven with approximately the same phase; a height position of the convex surface of the first head and a height position of the convex surface of the second head are substantially equal; packaging equipment.

2. a difference between a height position of the convex surface of the first head and a height position of the convex surface of the second head is within a range of ±2 mm; The packaging device of claim 1 .

3. When the second head is tilted toward the first head, the second head does not interfere with the first head. The packaging device according to claim 1 or 2.

4. The product to be packaged is a cylindrical vegetable. The packaging device according to any one of claims 1 to 3.

5. The two convex surfaces adjacent to each other in the first direction have a gap sufficient to support at least a cylindrical vegetable. The packaging device according to any one of claims 1 to 4.

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