JP3898148B2 - Sleeve wrapping machine and its blank - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a machine for sleeve-wrapping articles such as cans and bottles, mainly cylindrical or prismatic foods or cosmetics, or pharmaceuticals, and a blank thereof.
[0002]
[Prior art]
Conventionally, such sleeve devices include JP-A-56-161961, JP-A-57-142862, JP-A-58-193250, and the like.
[0003]
[Problems to be solved by the invention]
In the above publication, since the engagement position between the carton (blank) and the pin is determined according to the diameter of the article (can), it is necessary to change the entire apparatus when the number of rows of the article changes, which is inconvenient.
[0004]
[Means for Solving the Problems]
This invention is made | formed in view of said subject, Comprising: Invention of Claim 1 is a blank supply part (A) which supplies a blank (1), and the articles | goods (2, 2, ...) sent. A grouping unit (C) for sorting the number of items to be packaged, a folding device (E) for folding down both sides of the blank (1) supplied on the articles sorted by the grouping unit (C), and the folding device It comprises a bent portion (F) that can be bent inward by pulling the lower portions on both sides of the blank (1) bent in (E), and an engaging device (G) that engages the lower portions on both sides of the blank (1). ,
When the article (2) to be packaged is in two rows, the blank (1) has a fold line (d ₂ ) bent along the bottom surface of the article to be packaged on the female side surface part (c ₂ ). When there is a second fold line (m) outside the fold line (d ₂ ) and the articles (2) to be packaged are in one row, the female side surface part (c ₂ ) is packaged. While there is a fold line (d ₂ ) that is folded along the bottom surface of the article, there is no second fold line (m) outside the fold line (d ₂ ),
In the engagement device (G), when there are two rows of articles (2) to be packaged, a first guide for bending the fold line (d ₂ ) of the female side surface (c ₂ ) of the blank (1). (X ₁ ), the second guide (x ₂ ) for bending the second folding line (m) of the blank (1), and the female of the blank (1) on the male side of the first guide (x ₁ ) A third guide (x ₃ ) that engages with the lower end of the side surface portion (c ₂ ) on the side ,
When the articles (2) to be packaged are in two rows, the first guide (x ₁ ) bends the female side surface portion (c ₂ ) of the blank (1) along the fold line (d ₂ ) , The female side surface portion (c ₂ ), in which the second guide (x ₂ ) is bent along the folding line (d ₂ ), is bent downward in a crank shape along the second folding line (m), and the third guide (x ₃ ) Engages with the lower end of the female side surface portion (c ₂ ) and rotates the lower end of the side surface portion (c ₂ ) upward, and the engagement device (G) rotates the lower end upward. Engaging the female side surface (c ₂ ) of (1) with the male side surface (c ₁ ) of the blank (1) ;
When the articles (2) to be packaged are in a single row, the third guide (x ₃ ) folds the female side surface (c ₂ ) of the blank (1) along the fold line (d ₂ ). rotated side portion lower end of the (c ₂₎ above, further aspects of the female-side engaging section (G) blank the lower end is rotated upward (1) and (c ₂₎ blank (1 It engages the side surface of the male side and (c ₁₎ of), characterized in that.
[0005]
The invention according to claim 2 is the invention according to claim 1, wherein the second folding line (m) of the blank (1) when the articles (2) to be packaged are two rows is a small hole (k ₁ , k ₂ ), and the bent portion (F) has a female lug (64, 64) provided with claws (67, 67) and sliding left and right, and the lugs (64, 64). ) Is a small portion of the lower part of the side part (c ₂ ) on the female side of the blank (1) in which the claws (67, 67) are bent in a crank shape when the articles (2) to be packaged are in two rows. While engaging with the holes (k ₁ , k ₂ ), when the articles (2) to be packaged are in one row, they are idle.
[0006]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the bent portion (F) is provided with a guide rail (58) that can move up and down on the female side, and the guide rail (58). When the article to be packaged (2) is in two rows, it is lowered, while the article to be packaged (2) is in one row, it is raised to guide the article (2) It is characterized by.
[0008]
Reference numerals in parentheses indicate corresponding members in the following embodiments.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
2 is a side view of an embodiment of the present invention, FIG. 3 is a plan view thereof, and FIG. 4 is a front end view thereof.
[0010]
This apparatus is roughly divided into a blank supply unit A for supplying a blank 1, an article supply unit B for continuously pressing and pressing an article 2 below the blank supply unit A, and an article sent by the article supply unit B. 2, 2,... Grouping unit C for sorting to the number to be packaged, pressing unit D for pressing the center of the upper surface of the blank 1 supplied on the grouping unit C, and a folding device for bending both sides of the blank 1 downward E, and a folding portion F that pulls the lower portions on both sides of the blank 1 folded by the folding device E to be bent inward, and an engaging device G that engages the lower portions on both sides of the folded blank 1. 2 and 3, reference numeral 3 denotes a frame surrounding the apparatus.
[0011]
FIG. 5 is a plan view of a cardboard 1a folded into a sleeve shape that wraps six articles in three rows and two rows as an example of the blank 1, and FIG. 6 is a package of three items in one row as another example of the blank 1. It is a top view of the cardboard 1b bent in the sleeve shape to do.
[0012]
As shown in FIG. 5, the cardboard 1 a hits the central portion a that contacts the top surface of the article 2 to be packaged, the folding lines b ₁ and b ₂ that are bent along both sides of the top portion of the article 2, and both side surfaces of the article 2. The side portions c ₁ and c ₂ have fold lines d ₁ and d ₂ that are bent along both sides of the bottom surface of the article 2 to be packaged. 5, 5... Are through holes provided in the broken lines b ₁ and b ₂ . Outside this fold line d ₁ , there are small holes e ₁ and e ₂ for engaging the male lug, and further through the first fold line g having the first engagement portions f ₁ and f ₂ , Male protrusions h ₁ and h ₂ . Outside the fold line d ₂ is a fold line m having small holes k ₁ and k ₂ for engaging the female lug, and further, second insertion holes n ₁ and n 2 with which the male projections h ₁ and h ₂ are engaged. ₂ and further includes first insertion holes p ₁ and p _{2 with} which the first engaging portions f ₁ and f ₂ are engaged. The male protrusions h ₁ and h ₂ are mushroom-like, and the insertion holes n ₁ and n ₂ are semicircular and have a pair of cuts n ₃ and n ₄ for inserting the male protrusions h ₁ and h ₂ .
[0013]
The cardboard 1a advances forward, that is, downward in FIG. 5, and the small holes e ₁ and e ₂ have a longitudinal distance l with respect to the fold line d ₁ and a lateral relative distance l ₁ and l _{2 with} respect to the trailing edge 1c. Is constant. In FIG. 5, the left side from the central part a is the male side, and the right side is the female side. In the two rows of cardboard 1a, the relative distance between the small holes k ₁ and k ₂ with respect to the trailing edge 1c and the folding line d ₂ is constant.
[0014]
The cardboard 1b shown in FIG. 6 has substantially the same configuration as the cardboard 1a shown in FIG. 5, and corresponding parts are denoted by the same reference numerals, and only different parts will be described. In this case, there are four small holes e ₁ , e ₂ , e ₃ , e ₄ for engaging the male lug, and the longitudinal distance l with respect to the fold line d ₁ and the lateral relative distance l _{1 with} respect to the trailing edge 1c. , L ₂ , l ₃ , l ₄ are constant. In the case of FIG. 6, there are no female-side lug engaging small holes k ₁ and k ₂ and a fold line m, and the length of the side surface portion c ₂ is short accordingly. The second insertion holes n ₁ and n ₂ with which the male protrusions h ₁ and h ₂ engage are on the folding line d ₂ . Reference numeral 6 denotes a through hole for facilitating breakage of the central portion a.
[0015]
As shown in FIG. 7, the blank supply section A in the obliquely downward direction is rotated clockwise by the stacker section 10 for stacking the blanks 1, 1... A triangular rotating disk 12 and suction cups 13, 13 and 13 that rotate counterclockwise at three corners of the rotating disk 12. The suction cup 13 revolves while rotating, sucks the blank 1 one by one from the bottom of the stacker unit 10 and sends it to the sleeve carrier conveyor 14 extending obliquely downward below.
[0016]
The article supply section B has a conveyor 15 extending forward (to the right in FIGS. 2, 3, and 7) along a center line II that sends articles 2, 2,... Below the blank supply section A, and the conveyor. 15 are provided with star wheels 17 and 17 which engage with articles 2, 2.. As shown in FIG. 10, the vertical shaft 16 is connected to an AC servo motor M via a speed reducer 18 and a shaft 19. When the articles 2, 2... Are sent in two rows as shown in FIGS. 8 and 9, the cardboard 1 a shown in FIG. Further, as shown in FIGS. 9 and 11, a guide bar 20 extending forward is provided along a center line II for sending the articles 2, 2.
[0017]
As shown in FIGS. 2, 3, 7, 8, 9, and 11, a grouping unit C that sorts the articles 2, 2. In this grouping part C, a conveyor 25 and a sliding plate 23 extending in front of the conveyor 15 are provided. As shown in FIGS. 3 and 4, a front conveyor 26 and a female side of the sliding plate 23 are provided with a blind conveyor 26 composed of bars 24, 24... To drive in a vertical plane, as shown in FIG. These rods 24, 24... Are provided with sliders 27, 27... To slide toward the male side, and articles 2, 2. As shown in FIG. 13, the cam follower 30 provided inside the slider 27 engages with the groove cam 31 shown in FIG. As shown in FIG. 14, rush plates 33 and 33 having inclined surfaces 32 are fixed to the tip of the bar 28, and rolls 34, 34, and 34 are vertically arranged along the inclined surfaces 32 between the urge plates 33 and 33. Pivot.
[0018]
As shown in FIG. 15, the AC motor M that drives the star wheel 17 receives a signal 35 corresponding to the number of articles 2 and a signal 36 corresponding to the diameter of the article 2 to input the article 2 by the star wheel 17. The feed speed is slower than the moving speed of the slide bar 28.
[0019]
Next, the operation of the grouping unit C will be described with reference to FIGS. 16 (a), (b), (c), (d), and (e). The articles 2, 2... Are fed from the conveyor 15 onto the conveyor 25 and the sliding plate 23 in a state where the front and rear sides are adjacent to each other by the star wheels 17 and 17, and the slide bar 28 is female by the groove cam 31 as shown in FIG. As shown in (b), the tip first enters the row of articles 2 on the female side, and the article 2 is fed forward at a slightly higher speed as shown in (c). Next, as shown in (d), the slide bar 28 enters the row of articles 2 on the male side and feeds the article 2 forward at a slightly higher speed as shown in (e). Therefore, the three articles 2, 2... Are sent faster than the succeeding article 2, and a gap 37 is formed between them, so that the articles 2 are sorted into two rows. When the slide bar 28 enters, the rolls 34, 34, 34 at the front end smoothly engage with the article 2 and do not damage the article 2.
[0020]
Next, the pressing part D that holds the center of the upper surface of the blank 1 against the upper surface of the sorted article 2 will be described. As shown in FIG. 17, rails 40, 40 extending in the vertical direction are provided on the inner side of the rear and front supports 3 a, 3 b on the female side of the frame 3 shown in FIG. 3. It is provided to move up and down by jacks 42, 42 comprising a feed screw and a drive rotating nut shown in FIG. The beam 43 connecting the sliders 41 and 41 is provided with cantilever beams 44 and 44 extending toward the male side. The suspension frames 46, 46 provided at the front and rear ends of the ceiling frame 45 extending in the front-rear direction fixed to the cantilever beams 44, 44 to adjust left and right are provided at the front and rear ends of the upper conveyor belt 47 that holds the upper surface of the blank 1. The upper conveyor belt 47 is driven forward at the same speed as the conveyor 25.
[0021]
The operation of the pressing portion D will be described. When the sliders 41 and 41 are lowered by the jacks 42 and 42, the upper conveyor belt is passed through the beams 43, the cantilever beams 44 and 44, the ceiling frame 45, and the suspension frames 46 and 46. 47 descends and presses the center of the upper surface of the blank 1, that is, the cardboard 1 a placed on the upper surface of the sorted article 2. When not in use, the upper conveyor belt 47 is raised by the jacks 42, 42. At this time, the male side is opened by the cantilever beams 44, 44, so that the adjustment inspection work is easy. Further, it can be easily adapted to a change in the height of the article 2.
[0022]
Next, a folding apparatus E that bends both sides of the blank 1 downward will be described with reference to FIGS. A pair of bearing plates 51, 51, 52, 52 are supported on the second ceiling frame 50 fixed to the ceiling frame 45 between the cantilever beams 44, 44, and a pair of front and rear is interposed between the bearing plates 51, 52. The cranks 53 and 53 are supported, a crank rod 54 is supported at the tip of the arms of the cranks 53 and 53, and a pair of front and rear folding rolls 56 and 56 are attached to the lower end of the frame 55 suspended from the crank rod 54. Pivot.
[0023]
The operation of the folding device E will be described. When the blank 1 on the upper surface of the sorted article 2 is pressed, the folding rolls 56 and 56 are moved downward at the same speed as the blank 1 by the rotation of the cranks 53 and 53, The two side surfaces c ₁ and c ₂ are bent downward along the side surfaces of the article 2.
[0024]
Next, a bent portion F that is bent inward, that is, toward the center, by pulling the lower portions of the both side surface portions c ₁ and c ₂ of the blank 1 bent as shown in FIGS. As shown in FIGS. 2, 20, and 21, a pair of guide rails 57 and 58 are provided in front of the sliding plate 23, and the female-side guide rail 58 is linear and provided to move up and down by a cylinder 59. It is assumed that the female guide rail 58 is raised when the article 2 is in the first row and lowered when the article 2 is in the second row. A pair of chain conveyors 60, 60 shown in FIG. 20 is provided on the female side of the guide rails 58, and a slider 62 is mounted on a shaft 62 between bearings 61, 61 fixed on the chain conveyors 60, 60 as shown in FIG. 63 is provided to slide left and right, and the female end lugs 64 and 64 are supported on the outer end of the slider 63, and the cam follower 65 on the lower surface thereof engages with the groove cam 66 shown in FIG. As shown in FIG. 20, the claws 67 and 67 provided on the lugs 64 and 64 are provided at positions corresponding to the small holes k ₁ and k ₂ shown in FIG.
[0025]
A pair of chain conveyors 70, 70 shown in FIG. 20 is provided on the male side below the front part of the sliding plate 23. As shown in FIG. 21, a bearing 71 fixed on the chain conveyors 70, 70 has a slide shaft 72. Is provided to slide left and right. The slide shaft 72 adjacent to one blank forms a pair of front and rear, and the cam follower 73 provided with the front slide shaft 72 engages with the front groove cam 74 shown in FIG. The cam follower 75 provided on the slide shaft 72 is engaged with the rear groove cam 76 shown in FIG. 23, and the front groove cam 74 is arranged on the front side (downstream side) of the rear groove cam 76 so as to slide forward and backward. The shafts 72 and 72 are operated simultaneously.
[0026]
A lug 81 is pivotally attached to the upper protrusion 80 provided at the inner end of the slide shaft 72 so that the lug 81 can be rotated up and down by the shaft 82, and the groove cam 84 shown in FIG. When the slide shaft 72 is advanced by the groove cam 74 or 76 by engaging with the cam follower 83, the lug 81 first proceeds inward in a state of being inclined downward as shown by the arrow 8 in FIG. As shown by the arrow 9 in FIG. The movements of the arrows 8 and 9 are performed simultaneously in conjunction with the shape of the groove cam 84. As shown in FIG. 20, the distance between the claws 85, 85, 85, 85 provided in the lugs 81, 81 adjacent to each other in the front-rear direction corresponds to the small holes e ₁ , e ₂ , e ₃ , e _{4 shown} in FIG. Thus, the relative distances are l ₁ , l ₂ , l ₃ , and l ₄ .
[0027]
Next, an engagement device G that engages the lower portions of both side surface portions c ₁ and c _{2 of} the blank 1 bent at the bent portion F will be described. Both side surface portions c ₁ and c ₂ of the cardboard 1a folded by the folding device E extend downward, and an outer guide x ₁ that folds the lower side of one side surface portion c ₂ inward along a folding line d ₂ and a folding line. An inner guide x ₂ that is bent downward in a crank shape at m is provided.
[0028]
A locking unit 86 of the engaging device G is provided at a position between the chain conveyors 60 and 70 of the bent portion F in front of the bent portion F. The locking unit 86 includes a guide x ₃ that engages with the lower end of the female side surface portion c ₂ , a curve x ₄ that continues to the front of the inner side guide x ₂ , and a lower end of the male side surface portion c ₁ that extends downward along a fold line g. An outer guide x _{5 to be} bent, an inner guide x ₆ , an outer guide x ₇ for bending the male projections h ₁ and h ₂ upward, and an inner guide x ₈ are sequentially provided forward. As shown in FIG. 24, the guide x ₃ that engages with the lower end of the side surface portion c ₂ is opened rearward. Information x ₅ of the outer as shown in Figure 26, 27 to 31 indicates becomes an inclined surface from the upright surface, continuous to FIG. 22 shows the guide rail 57 at its forward, guided inside chevron thereunder x ₆ , X ₇ is included. As shown in FIGS. 28 and 29, the outer guide x ₇ has an upper surface y ₁ , and the inner guide x ₈ continues to the inner guide x ₆ and extends forward along the upper surface y ₁ .
[0029]
A guide x ₉ (roll x ₉ ) is provided for secondary engagement of the protrusions h ₁ and h ₂ with the second insertion holes n ₁ and n ₂ . The guide x ₉ has a slope y ₂ which is inclined inwardly towards the front, the inner guiding x ₁₀ in as shown in Figure 24 shown extends forward along it in above the slope y _2. The front end of the guide x ₉ is a roll x ₉ that rotates forward, but this is for the sake of smoothness, and the surface may be left as it is.
[0030]
Next, the operation in the case where the three items 2 of the bent portion F and the engaging device G are packaged will be described with reference to FIG.
[0031]
Figure 32 (b) both side surfaces c _1, c ₂ of the folded bent cardboard 1a in an apparatus E as shown extends downwardly, the side surface portion c ₂ by the guide x ₁ outside as (b) shows Is bent inward at a fold line d ₂ , and then bent downward at a fold line m in a crank shape at an inner guide x ₂ .
[0032]
Then (c) the female side of the lug 64, 64 as shown advances inwardly by the engagement of the grooved cam 66 and cam follower 65, the small holes k _1, k of the claws 67, 67 side face c _{2 2} is engaged, and the side surface portion c ₂ is pulled toward the center and is bent firmly toward the center at the folding line d ₂ . Further, since the relative distance between the small holes k ₁ and k ₂ with respect to the rear edge 1c and the broken line d ₂ is constant, the engagement between the claws 67 and 67 and the small holes k ₁ and k ₂ on the side surface portion c ₂ is ensured. Done.
[0033]
Next, as shown in (d), the relationship between the groove cams 74 and 76 and the cam followers 73 and 75 in a state where the male lugs 81 and 81 of the front and rear pairs are inclined downward by the engagement of the groove cam 84 and the cam follower 83. At the same time, the claws 85, 85... Engage with the small holes e ₁ , e ₂ . At this time, the lug 81 of the male side is inclined downward, and therefore the male side of the lugs 81, 81 of the pair of front and rear is activated at the same time, the claws 85, 85 ... are all securely stoma e _1, e ₂ Engage with.
[0034]
Next, the lower end of the side surface portion c ₂ is rotated upward by the guide x ₃ . In that position, the inner guide x ₂ escapes inward with a curve x ₄ .
[0035]
Then with lugs 81 and 81 of the male side as shown in (e) indicates pulls the side portions c ₁ proceeds inwardly toward the center by bending at fold lines d _1, bent strongly in a line d _1. Further, the lugs 81 and 81 on the male side proceed inward, and at this time, the lugs 81 and 81 rotate upward toward the horizontal state by the engagement of the groove cam 84 and the cam follower 83, and the state shown in FIG. 22 is obtained. . At the same time bent downward to a lower end of the side surface portion c ₁ by a broken line g by an outer guide x ₅ inside the guide x _6, this time to project the engaging portion f _1, f ₂ upwardly.
[0036]
At this time, (f) the lugs 81 and 81 as shown is pushed up the lower end of the side portion c _1, 1 primary engagement of the engaging portion f _1, f ₂ into the insertion hole p _1, p ₂ of the side surface portion c ₂ Combine. At the same time, the male projections h ₁ and h ₂ are bent upward by the outer guide x ₇ and the inner guide x ₈ .
[0037]
Next, as shown in (g), the male projections h ₁ and h ₂ are raised by the outer guide x ₉ and the inner guide x ₁₀ , and the second insertion holes n ₁ and n ₂ are moved by the guide x ₉ (roll x ₉ ). Secondary engagement with n ₂ . This secondary engagement is performed at the center of the boundary between the two rows of articles 2 and 2.
[0038]
Thus, the lugs 64, 64, 81, 81 return to the outside, and the lug 81 is again inclined obliquely downward.
[0039]
Next, the operation in the case of packaging three items 2 in one row will be described with reference to FIG. In this case, the cardboard 1b shown in FIG. 6 is used, and the female side guide rail 58 is raised by the cylinder 59 shown in FIG. Further, the ceiling frame 45 is moved slightly to the left and right to align the position of the upper conveyor belt 47 with the center of the cardboard 1b.
[0040]
Except for the above, the operation is exactly the same as in the case of two rows, but only the different parts will be described.
[0041]
(A) The lower part of the side part c ₂ is shorter than the lower part of the side part c ₁ as shown, and the lower part of the side part c ₂ is the broken line d ₂ in the guides x ₁ , x ₂ , x ₃ as shown in (b). Just bend at. Accordingly, since there is no female side row, the female side lug 64 only operates idle.
[0042]
Next, as shown in (b), only the lug 81 on the male side is inclined inward, and the claw 85... Is formed in the small holes e ₁ , e _2.・ The relative distance l and relative distances l ₁ , l ₂ , l ₃ , and l ₄ with respect to the folding line d ₁ and the trailing edge 1c of these cardboards 1b are the same as in the case of two rows, so the engagement is It is done without hindrance.
[0043]
Next, as shown in (d), the lower end of the side surface portion c ₁ is bent downward along the folding line g by the guides x ₅ and x ₆ , and at this time, the engaging portions f ₁ and f ₂ protrude upward. Further, the lugs 81 and 81 advance inward, and the lugs 81 and 81 are rotated upward toward the horizontal state by the engagement of the groove cam 84 and the cam follower 83. Lug 81, 81 as in the case (f) shows pushes up the lower end of the side portion c _1, the engaging portion f _1, f ₂ into the insertion hole p _1, p ₂ of the side portion c ₂ 1 Tsugigakarigo Let At the same time, the male projections h ₁ and h ₂ are bent upward by the guides x ₇ and x ₈ .
[0044]
Next, as shown in (g), the male projections h ₁ and h ₂ are secondarily engaged with the second insertion holes n ₁ and n ₂ on the folding line d ₂ by the guide x ₉ (roll x ₉ ).
[0045]
As described above, when the articles 2 are packaged in a row, the female-side article edge of the male-side article is guided to the center by the guide rail 58, and the female-side lug 64 is not operated. As a result, the male lug 81 can be used in the same manner as in the case of two rows, and the locking unit 86 is also the same as in the case of two rows, so that no change is required.
[0046]
【The invention's effect】
As described above, the present invention can be operated in the same manner regardless of whether the number of articles to be packaged is two or one. Therefore, it is convenient that the entire apparatus is not changed.
[Brief description of the drawings]
FIG. 1 is an enlarged view showing the gist of the operation of the present invention.
FIG. 2 is a side view of an embodiment of the present invention.
FIG. 3 is a plan view thereof.
FIG. 4 is a front end view thereof.
FIG. 5 is a plan view of a cardboard 1a that is folded into a sleeve shape that wraps six articles in three rows and two rows as an example of rank 1;
FIG. 6 is a plan view of a cardboard 1b that is bent into a sleeve shape that wraps three rows of articles as another example of the blank 1;
FIG. 7 is a side view of a blank supply unit A and an article supply unit.
FIG. 8 is a plan view of the article supply unit.
FIG. 9 is an enlarged side view of the star wheel portion.
FIG. 10 is an enlarged cross-sectional view of the star wheel portion.
11 is a side view of the article supply unit B and the grouping unit C. FIG.
12 is a cross-sectional view of the grouping portion C. FIG.
FIG. 13 is an enlarged sectional view thereof.
FIG. 14 is an enlarged plan view thereof.
FIG. 15 is a control circuit diagram of an AC motor M that drives the star wheel 17;
16 (a), (b), (c), (d), and (e) are descriptions for sequentially explaining the operation of the grouping unit C. FIG.
FIG. 17 is a plan view of a pressing portion D that holds the center of the upper surface of the blank 1 against the upper surface of the sorted article 2;
18 is a side view of a folding device E folding the both sides of the pressing portion D and the blank 1 for pressing the upper surface of the upper surface around the sorted pieces 2 of the blank 1 downward.
FIG. 19 is an enlarged sectional view thereof.
FIG. 20 is a plan view of a bent portion F that pulls the lower portions of both side surface portions c ₁ and c ₂ of the bent blank 1 to be bent inward, that is, toward the center.
FIG. 21 is an enlarged sectional view thereof.
FIG. 22 is an enlarged cross-sectional view of the bending portion F and the engagement device G for bending.
FIG. 23 is a plan view showing a cam groove of a bent portion F to be bent.
FIG. 24 is a side view of the bending portion F and the engaging device G for bending.
FIG. 25 is a plan view of the bending portion F and the engagement device G for bending.
26 is a cross-sectional view taken along line 1-1 of FIG.
27 is a cross-sectional view taken along line 2-2 of FIG.
28 is a cross-sectional view taken along line 3-3 of FIG.
29 is a cross-sectional view taken along line 4-4 of FIG. 25. FIG.
30 is a cross-sectional view taken along line 5-5 of FIG.
31 is a cross-sectional view taken along line 6-6 of FIG.
[Figure 32] (a) (ii) (c) (d) (e) (to) (g) sequentially the operation of the bent portion F and the engaging device G in the case of packaging an article 2 of the three two rows It is explanatory drawing demonstrated.
[Figure 33] (a) (ii) (c) (d) (e) (to) (g) sequentially the operation of the bent portion F and the engaging device G in the case of packaging an article 2 of the three one column It is explanatory drawing demonstrated.
[Explanation of symbols]
1 Blank 2 articles A blank feed unit B side portion d ₁ polygonal line m polygonal line k ₁ of the product supply section C grouping unit D pressing unit E bent portion G engaging device c ₂ female, k ₂ small holes 58 guide rail 64 female The lug 67 of the nail

Claims (3)

A blank supply unit (A) for supplying a blank (1), a grouping unit (C) for sorting the sent articles (2, 2,...) To the number to be packaged, and the grouping unit (C). A folding device (E) for folding both sides of the blank (1) supplied on the article, and a lower portion on both sides of the blank (1) folded by the folding device (E) can be folded inward. It consists of an engagement device (G) that engages the lower portions on both sides of the bent portion (F) and the blank (1),
When the article (2) to be packaged is in two rows, the blank (1) has a fold line (d ₂ ) bent along the bottom surface of the article to be packaged on the female side surface part (c ₂ ). When there is a second fold line (m) outside the fold line (d ₂ ) and the articles (2) to be packaged are in one row, the female side surface part (c ₂ ) is packaged. While there is a fold line (d ₂ ) that is folded along the bottom surface of the article, there is no second fold line (m) outside the fold line (d ₂ ),
In the engagement device (G), when there are two rows of articles (2) to be packaged, a first guide for bending the fold line (d ₂ ) of the female side surface (c ₂ ) of the blank (1). (X ₁ ), the second guide (x ₂ ) for bending the second folding line (m) of the blank (1), and the female of the blank (1) on the male side of the first guide (x ₁ ) A third guide (x ₃ ) that engages with the lower end of the side surface portion (c ₂ ) on the side ,
When the articles (2) to be packaged are in two rows, the first guide (x ₁ ) bends the female side surface portion (c ₂ ) of the blank (1) along the fold line (d ₂ ) , The female side surface portion (c ₂ ), in which the second guide (x ₂ ) is bent along the folding line (d ₂ ), is bent downward in a crank shape along the second folding line (m), and the third guide (x ₃ ) Engages with the lower end of the female side surface portion (c ₂ ) and rotates the lower end of the side surface portion (c ₂ ) upward, and the engagement device (G) rotates the lower end upward. Engaging the female side surface (c ₂ ) of (1) with the male side surface (c ₁ ) of the blank (1) ;
When the articles (2) to be packaged are in a single row, the third guide (x ₃ ) folds the female side surface (c ₂ ) of the blank (1) along the fold line (d ₂ ). rotated side portion lower end of the (c ₂₎ above, further aspects of the female-side engaging section (G) blank the lower end is rotated upward (1) and (c ₂₎ blank (1 side of the male side) (c ₁₎ and engaging the sleeve packaging machine, characterized in that. The second fold line (m) of the blank (1) when the article (2) to be packaged is in two rows has small holes (k ₁ , k ₂ ), and the bent portion (F) is a nail (67, 67) is provided and has a female-side lug (64, 64) that slides left and right, and the lug (64, 64) has two rows of articles (2) to be packaged. The claws (67, 67) engage with the small holes (k ₁ , k ₂ ) on the lower side surface (c ₂ ) of the female side of the blank (1) bent into a crank shape, and should be packaged. 2. A sleeve wrapping machine according to claim 1, characterized in that it operates idle when the articles (2) are in a single row.   The bent portion (F) is provided with a guide rail (58) that can move up and down on the female side. On the other hand, when the articles (2) to be packaged are in a single row, the sleeve packaging machine ascends and guides the articles (2).

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