JP6195470B2 - Label peeling machine - Google Patents

Description

  The present invention relates to a label peeling machine that peels a label from a bottle.

  In the label separating apparatus described in Patent Document 1 below, a polygonal rotating body is arranged in a cylindrical main body, a fixed needle portion is projected from the inner peripheral surface of the cylindrical main body, and the outer periphery of the polygonal rotating body. A rotating blade blade portion protrudes from the surface. Accordingly, the plastic container with the label attached is conveyed between the cylindrical main body and the polygonal rotating body, and the label is peeled from the plastic container by rotating the polygonal rotating body.

  However, in this label separating apparatus, although the cross-sectional outer shape of the outer peripheral surface of the polygonal rotating body is polygonal, the cross-sectional outer shape of the inner peripheral surface of the cylindrical main body is circular. For this reason, when the polygonal rotating body is rotated, the change in the pressure applied to the plastic container between the cylindrical main body and the polygonal rotating body is small, and the label peeling efficiency from the plastic container may be reduced. There is.

Japanese Patent No. 4488537

  In view of the above facts, an object of the present invention is to obtain a label peeling machine capable of improving the peeling efficiency of a label from a bottle.

The label peeling machine according to claim 1 is formed into a cylindrical shape, a peeling cylinder having a polygonal cross-sectional outer shape and a polygonal cross-sectional shape of the outer peripheral surface arranged in the peeling cylinder. And a peeling roll that peels off the label from the bottle by being rotated between the bottle and the bottle having flexibility and being attached with the label . The cross-sectional outer shape of one of the peripheral surface and the outer peripheral surface of the peeling roll is an odd square, and the other cross-sectional outer shape of the inner peripheral surface of the peeling cylinder and the outer peripheral surface of the peeling roll is an even square, The cross-sectional outer shape of the inner peripheral surface and the cross-sectional outer shape of the outer peripheral surface of the peeling roll are made dissimilar .

  In the label peeling machine according to claim 1, a peeling roll is disposed in the peeling cylinder, and a bottle having flexibility and a label is transported between the peeling cylinder and the peeling roll, By rotating the peeling roll, the label is peeled from the bottle.

  Here, the cross-sectional outer shape of the inner peripheral surface of the peeling cylinder is polygonal, and the cross-sectional outer shape of the outer peripheral surface of the peeling roll is polygonal. For this reason, when a peeling roll rotates, the change of the pressure which acts on a bottle between a peeling cylinder and a peeling roll can be enlarged, and the peeling efficiency of the label from a bottle can be improved.

Moreover , the cross-sectional outer shape of the inner peripheral surface of the peeling cylinder and the cross-sectional outer shape of the outer peripheral surface of the peeling roll are made non-similar. For this reason, unlike the case where the cross-sectional outer shape of the inner peripheral surface of the peeling cylinder and the cross-sectional outer shape of the outer peripheral surface of the peeling roll are similar, when the peeling roll is rotated, It can suppress that the rotational resistance of a peeling roll becomes large facing the center of all the side surfaces of an inner peripheral surface simultaneously.

Furthermore , the cross-sectional outer shape of one of the inner peripheral surface of the peeling cylinder and the outer peripheral surface of the peeling roll is an odd-numbered square, and the other cross-sectional outer shape of the inner peripheral surface of the peeling cylinder and the outer peripheral surface of the peeling roll is an even-numbered square. Yes. For this reason, when a peeling roll rotates, it can suppress appropriately that the rotational resistance of a peeling roll becomes large.

It is the side view seen from the right side which shows the label peeling machine which concerns on embodiment of this invention. It is sectional drawing (2-2 sectional view taken on the line of FIG. 1) seen from the back which shows the label peeling machine which concerns on embodiment of this invention. It is sectional drawing seen from the right side which shows the label peeling machine which concerns on embodiment of this invention. It is sectional drawing (4-4 sectional view taken on the line of FIG. 1) seen from the front side which shows the label peeling machine which concerns on embodiment of this invention. It is sectional drawing seen from the right side which shows the peeling part of the label peeling machine which concerns on embodiment of this invention. It is sectional drawing seen from the front side which shows the peeling part of the label peeling machine which concerns on embodiment of this invention. It is sectional drawing seen from the front side which shows the peeling part of the label peeling machine which concerns on embodiment of this invention in detail. It is sectional drawing which shows the peeling pin in the peeling part of the label peeling machine which concerns on embodiment of this invention. It is sectional drawing seen from the front side which shows the selection part of the label peeling machine which concerns on embodiment of this invention. (A) And (B) is a side view which shows a bottle, (A) shows before a process, (B) has shown the after process.

  FIG. 1 is a side view of a label peeling machine 10 according to an embodiment of the present invention viewed from the right side, and FIG. 2 is a cross-sectional view of the label peeling machine 10 viewed from the rear (FIG. 1). 2-2 cross-sectional view). Further, FIG. 3 shows a sectional view of the label peeling machine 10 as viewed from the right side, and FIG. 4 shows a sectional view of the label peeling machine 10 as seen from the front side (line 4-4 in FIG. 1). (Cross sectional view). In the drawing, the front side of the label peeling machine 10 is indicated by an arrow FR, the right side of the label peeling machine 10 is indicated by an arrow RH, and the upper side is indicated by an arrow UP.

  The label peeling machine 10 according to the present embodiment peels a cylindrical film-like label 14 attached to a substantially cylindrical container-like bottle 12 (particularly a PET bottle) shown in FIG.

Bottle 12 is a resin, flexibility has a base end is a plate-shaped bottom portion 16, except proximal and distal ends is a tubular body portion 18, the tip is generally cylindrical The reduced diameter portion 20 (neck portion and opening portion). The diameter-reduced portion 20 is smaller in diameter than the main body portion 18, and the diameter-reduced portion 20 and the bottom portion 16 are higher in rigidity than the main body portion 18. The label 14 is made of resin or paper, and is attached to the entire circumferential direction of the outer periphery of the main body 18.

An annular plate-shaped flange 20A is integrally formed on the outer periphery of the reduced diameter portion 20 of the bottle 12 on the same axis, and the flange 20A projects outward in the radial direction of the reduced diameter portion 20. It is the largest diameter part. A bottomed cylindrical cap 22 is detachably attached to the reduced diameter portion 20 at the front end side of the bottle 12 with respect to the flange 20A. The cap 12 is removed from the reduced diameter portion 20 and the bottle 12 is opened (the inside of the bottle 12 is opened). A cylindrical ring 22 </ b> A is disposed between the flange 20 </ b> A and the cap 22, and the ring 22 </ b> A is locked to the reduced diameter portion 20. When the bottle 12 has never been opened (when the cap 22 has never been removed from the reduced diameter portion 20), the ring 22A is integrated with the cap 22, and the bottle 12 is opened for the first time. When the cap 22 is first detached from the reduced diameter portion 20, the ring 22 </ b> A is separated from the cap 22 by being locked to the reduced diameter portion 20.

  In the general bottle 12 (capable of storing 500 ml of liquid), the maximum diameter of the main body 18 and the bottom 16 is approximately 60 mm, and the maximum diameter of the reduced diameter portion 20 (diameter of the flange 20A). Is approximately 30 mm, and the axial dimension (height dimension) of the bottle 12 is approximately 210 mm.

  Further, as will be described later, in the label peeling machine 10, the charged bottle 12 is compressed in the compression unit 26. For this reason, the bottle 12 put into the label peeling machine 10 may be in any state, and the bottle 12 (particularly, the main body portion 18) may or may not be compressed in the radial direction. Further, the cap 22 may or may not be attached to the reduced diameter portion 20 of the bottle 12, and the liquid may or may not be accommodated in the bottle 12 (particularly remaining).

  As shown in FIGS. 1 and 2, a cylindrical charging hopper 24 is provided at the upper end of the rear portion of the label peeling machine 10, and one end (upper end) of the charging hopper 24 is leftward inside. It is open. For this reason, the bottle 12 is loaded (supplied) into the loading hopper 24 from one end opening of the loading hopper 24, and the bottle 12 is loaded into the label peeling machine 10.

  At the rear of the label peeling machine 10, a compression unit 26 is provided below the charging hopper 24.

  The compression unit 26 is provided with a compression cylinder 28 having a substantially rectangular cylindrical shape, and the upper end of the compression cylinder 28 is connected to the other end (lower end) of the charging hopper 24. For this reason, the bottle 12 charged into the charging hopper 24 flows down (supplied) into the compression cylinder 28.

  A pair of hollow cylindrical compression rolls 30 are supported in the middle in the vertical direction of the compression cylinder 28 so as to be rotatable, and the compression rolls 30 are arranged such that their axial directions are parallel to the front-rear direction. The pair of compression rolls 30 are arranged in the left-right direction, and the minimum gap dimension between the pair of compression rolls 30 is smaller than the diameter dimension of the cap 22 of the bottle 12, for example. The pair of compression rolls 30 are connected to a compression motor 32, and the pair of compression rolls 30 are rotated by driving the compression motor 32. At this time, the pair of compression rolls 30 are rotated in the direction in which the upper portions thereof are directed toward the gaps therebetween.

  A plurality of substantially cylindrical through pins 34 are fixed to the outer peripheral surface of the compression roll 30, and the plurality of through pins 34 are arranged at intervals in the circumferential direction and the axial direction of the compression roll 30. The penetrating pin 34 projects outward in the radial direction of the compression roll 30, and the projecting dimension of the penetrating pin 34 from the outer peripheral surface of the compression roll 30 is larger than the minimum gap dimension between the pair of compression rolls 30. . The tip of the penetrating pin 34 has a conical shape.

  A plurality of rectangular through holes (not shown) are formed through the peripheral wall of the compression roll 30, and the longitudinal dimension and the width dimension of the through holes are, for example, compared to the maximum diameter dimension of the main body 18 of the bottle 12. It has been enlarged. The plurality of through holes are arranged at intervals in the circumferential direction and the axial direction of the compression roll 30, and when the pair of compression rolls 30 are rotated, at least at the minimum gap position between the pair of compression rolls 30. The through pin 34 is always passed through the through hole.

  A guide path 28 </ b> A is formed in the upper part of the compression cylinder 28, and the guide path 28 </ b> A allows the bottle 12 that has flowed into the compression cylinder 28 to flow down (guide) to the upper part of each compression roll 30. For this reason, when the pair of compression rolls 30 is rotated, the bottle 12 is transported between the pair of compression rolls 30 by the compression roll 30 and passed between the pair of compression rolls 30, so that the bottle 12 Is sandwiched between a pair of compression rolls 30 and compressed in the radial direction. At this time, the penetrating pin 34 penetrates the bottle 12 (particularly the peripheral wall or the bottom 16 of the main body 18), so that the liquid and gas (air) in the bottle 12 are discharged. Furthermore, when the pair of compression rolls 30 or the penetrating pins 34 breaks the cap 22 and the ring 22A of the bottle 12, at least one of the cap 22 and the ring 22A may be detached from the bottle 12.

  As described above, in the bottle 12, the reduced diameter portion 20 and the bottom portion 16 have higher rigidity than the main body portion 18. For this reason, even if the bottle 12 is passed between the pair of compression rolls 30, the main body portion 18 is compressed in the radial direction, but the bottom portion 16 and the reduced diameter portion 20 are hardly compressed in the radial direction. As a result, the bottom portion 16 is inclined in the radial direction toward the axial direction of the main body portion 18, and the reduced diameter portion 20 is easily penetrated into the compression roll 30 through the through hole and is hardly compressed in the radial direction. Moreover, after the bottle 12 is passed between the pair of compression rolls 30, the bottle 12 is slightly elastically restored to reduce the amount of compression.

  Thereby, does the maximum thickness dimension in the compression direction of the bottle 12 (hereinafter referred to as “compression bottle 12”) compressed by being passed between the pair of compression rolls 30 equal to the maximum diameter dimension of the reduced diameter portion 20? Slightly larger (see FIG. 10B). For this reason, in the general bottle 12, the maximum thickness dimension in the compression direction of the compression bottle 12 is approximately 30 mm. Furthermore, in the general bottle 12, the maximum width dimension in the compression vertical direction of the compression bottle 12 is approximately 90 mm, and the maximum axial direction dimension (maximum longitudinal dimension) in the compression vertical direction of the compression bottle 12 is approximately 240 mm. Become.

  A peripheral wall of the compression roll 30 is formed as a discharge wall 28B in a portion below the pair of compression rolls 30, and a plurality of discharge holes (not shown) are formed through the discharge wall 28B. The discharge hole prevents the compressed bottle 12 from passing, and allows the liquid discharged from the bottle 12 and the cap 22 and the ring 22A detached from the bottle 12 to pass as described above. The plurality of discharge holes communicate with the discharge box 36, and the liquid, the cap 22 and the ring 22A pass through the discharge holes and are selected from the compressed bottle 12, and flow down into the discharge box 36 for discharge. Is done.

  The label peeling machine 10 is provided with a peeling portion 38 on the lower side and the front side of the compression portion 26.

  The peeling part 38 is provided with a cylindrical peeling cylinder 40, and the lower end of the compression cylinder 28 of the compression part 26 is connected to the rear part of the peeling cylinder 40. For this reason, the compression bottle 12 compressed in the compression unit 26 flows down (supplied) into the rear portion of the peeling cylinder 40. Further, the axial direction of the peeling cylinder 40 is inclined at a predetermined angle (for example, 15 ° with respect to the front) in the upward direction as it goes forward.

  As shown in FIGS. 3 to 7, the peeling cylinder 40 is provided with a regular heptagonal cylindrical casing 42, and a long plate-like liner 44 is fixed to each corner of the casing 42. . The longitudinal direction of the liner 44 is disposed along the axial direction of the casing 42, and the intermediate portion in the width direction of the liner 44 is disposed perpendicular to the radial direction of the casing 42. The inner peripheral surface 40A of the peeling cylinder 40 is formed by a portion of the casing 42 where the intermediate portion in the width direction of the liner 44 is not disposed and the intermediate portion in the width direction of the liner 44. The inner peripheral surface 40 </ b> A of the cylinder 40 has a casing 42 forming portion whose width direction dimension is made larger (for example, approximately doubled) than the liner 44 forming portion, and the center of the casing 42 forming portion in the width direction is the liner 44. Compared with the center in the width direction of the formation portion, the separation cylinder 40 is disposed on the radially inner side.

  Both side portions in the width direction of the liner 44 are bent with respect to the intermediate portion in the width direction of the liner 44 to form a flat blade portion 44A as a protruding portion, and the blade portion 44A is an inner peripheral surface 40A of the peeling cylinder 40. Is slightly projected (for example, 2 mm or more and 3 mm or less) into the peeling cylinder 40 from the inner peripheral surface 40A of the peeling cylinder 40. A plurality of triangular plate-like liner blades 44B are formed at the tip of the blade portion 44A (both ends in the width direction of the liner 44), and the plurality of liner blades 44B are arranged in the longitudinal direction of the liner 44 (the axis of the peeling cylinder 40). Direction).

A plurality of substantially cylindrical peeling pins 46 as protrusions are fixed to the peeling cylinder 40, and the peeling pins 46 protrude from the inner peripheral surface 40 </ b> A of the peeling cylinder 40 toward the inside in the radial direction of the peeling cylinder 40. ing. The peeling pin 46 is arranged at the center in the width direction between the casing 42 forming portion and the liner 44 forming portion of the inner peripheral surface 40 </ b> A of the peeling cylinder 40, and is arranged in the circumferential direction of the peeling cylinder 40 and arranged in the casing 42. Those disposed on the inner side in the radial direction of the peeling cylinder 40 as compared with those disposed on the liner 44. The peeling pins 46 are arranged at a predetermined interval A (see FIG. 5, for example, 150 mm) in the axial direction of the peeling cylinder 40, and the predetermined interval A is made smaller than the maximum axial dimension of the general compression bottle 12. ing.

As shown in FIG. 8, a disc-shaped fixing portion 46 </ b> A is coaxially formed at the base end of the peeling pin 46, and the fixing portion 46 </ b> A has a diameter larger than that of other portions of the peeling pin 46. Yes. Tip of the peeling pin 46 is conically, is gradually reduced in diameter toward the distal end side of the peeling pin 46.

The peeling pin 46 is fixed to the peeling cylinder 40 by a fixing mechanism 48 (lock mechanism). The fixing mechanism 48 is provided with a bottomed cylindrical fixed cylinder 50, which is fixed in a state of being penetrated by the casing 42 or the liner 44, and protrudes radially outward of the peeling cylinder 40. Has been. The peeling pin 46 is coaxially penetrated through the bottom wall (base end wall) of the fixed cylinder 50, and the fixing portion 46 </ b> A of the peeling pin 46 is locked. A bolt 52 is screwed into the fixed cylinder 50, and a fixing portion 46 </ b> A of the peeling pin 46 is sandwiched between the bolt 52 and the bottom wall of the fixed cylinder 50, so that the peeling pin 46 is fixed to the fixed cylinder 50. And is fixed to the peeling cylinder 40. The bolt 52 is screwed into a nut 54 (lock nut), and the nut 54 is pressed against the tip of the fixed cylinder 50.

  Thus, the peeling pin 46 is a separate component from the bolt 52 (fixing mechanism 48). For this reason, the material of the peeling pin 46 can be selected irrespective of the bolt 52, and can be made different from the bolt 52 (for example, SKH or SKD). Accordingly, the portion corresponding to the peeling pin 46 is formed integrally with the bolt 52 by processing the tip of the bolt 52, and the hardness of the peeling pin 46 can be increased compared with the case where the bolt 52 is heat-treated. The durability of 46 can be improved and the cost can be reduced.

  As shown in FIG. 3 to FIG. 7, a dodecagonal columnar (substantially hexagonal columnar) peeling roll 56 is coaxially arranged in the peeling cylinder 40, and the outer peripheral surface 56 </ b> A of the peeling roll 56 and the peeling cylinder 40 are arranged. A peeling chamber 58 is formed between the inner peripheral surface 40A. A driving motor 60 (see FIG. 2) is connected to the peeling roll 56. When the driving motor 60 is driven, the peeling roll 56 is rotated in the arrow B direction. On the outer peripheral surface 56A of the peeling roll 56, a long rectangular wide surface and a narrow surface are alternately arranged in the circumferential direction, and the width of the wide surface is larger than that of the narrow surface ( For example, the width direction center of the narrow surface is disposed outside the radial direction (rotating radial direction) of the peeling roll 56 as compared with the center of the wide surface in the width direction.

A plurality of square columnar conveying blades 62 as protrusions are fixed to the outer peripheral surface 56 </ b> A of the peeling roll 56 on the wide surface, and the conveying blade 62 can rotate integrally with the peeling roll 56. The conveying blade 62 protrudes from the outer peripheral surface 56A of the peeling roll 56 by a predetermined distance C (see FIG. 7, for example, 25 mm), and the predetermined distance C is larger than the maximum diameter of the reduced diameter portion 20 of the general bottle 12. It is small. The conveying blades 62 are arranged on a triple spiral on the outer periphery of the peeling roll 56, and are arranged at equal intervals in the axial direction (rotating axis direction) and the circumferential direction (rotating circumferential direction) of the peeling roll 56. The longitudinal direction of the conveying blade 62 is arranged substantially along the spiral of the outer periphery of the peeling roll 56, and is inclined by a predetermined angle α (see FIG. 5, for example, 45 °) with respect to the axial direction of the peeling roll 56, and the arrow B It is inclined in the direction toward the rear side as it goes in the direction.

  Between the pair of conveying blades 62 adjacent to each other in the axial direction of the peeling roll 56 in the axial direction of the peeling roll 56, the conveying blades 62 adjacent to each other in the spiral direction of the outer periphery of the peeling roller 56 are arranged. The pair of conveying blades 62 adjacent to each other in the spiral direction on the outer periphery of the peeling roll 56 are separated in the axial direction of the peeling roll 56, and the peeling pin of the peeling cylinder 40 is positioned between the peeling rolls 56 in the axial direction. 46 is arranged.

  As shown in FIG. 5, the separation dimension D (for example, 282 mm) of the pair of conveying blades 62 adjacent in the axial direction of the peeling roll 56 in the axial direction of the peeling roll 56 is equal to or larger than the maximum axial dimension of the general compression bottle 12. The separation dimension E of the pair of conveying blades 62 in the width direction of the conveying blades 62 is, for example, 187 mm. The separation dimension F (for example, 108 mm) in the spiral direction of the pair of conveying blades 62 provided adjacent to each other in the spiral direction on the outer periphery of the peeling roll 56 is equal to or larger than the maximum width dimension of the general compression bottle 12. A separation dimension G of the conveying blade 62 in the axial direction of the peeling roll 56 is, for example, 40 mm.

  As shown in FIG. 7, in the peeling cylinder 40, the inscribed circle radius H of the liner blades 44B of the plurality of liners 44 (the separation distance from the central axis of the peeling roll 56 at the tip of the blade portion 44A) is, for example, 214 mm. An inscribed circle radius I of the plurality of peeling pins 46 arranged in the casing 42 (a separation distance from the central axis of the peeling roll 56 at the tip of the peeling pin 46) is set to 201 mm, for example. The rotation outermost locus circle radius J (circumscribed circle radius) of the peeling roll 56 is, for example, 184 mm, and the rotation outermost locus circle radius K (the circumscribed circle radius of the plurality of conveying blades 62) of the conveying blade 62 is, for example, It is set to 203 mm.

  Maximum separation distance between the inner peripheral surface 40A of the peeling cylinder 40 and the conveying blade 62 (the liner 44 forming portion of the inner peripheral surface 40A of the peeling cylinder 40 and the conveying blade 62 are opposed to each other in the radial direction of the peeling roller 56 and are parallel to each other. The separation dimension in the radial direction of both of the peeling rolls 56 when disposed (for example, 23 mm) is set to be equal to or less than the maximum diameter of the reduced diameter portion 20 of the general bottle 12, and the maximum thickness of the general compression bottle 12 The dimensions are below.

Stripping pins 46 which are disposed in the casing 42 will have reached the rotation outermost locus yen conveying wings 62 (circumscribed circle of a plurality of conveying blades 62), the peeling rolls, the inner side of the rotation outermost locus circle of the conveying wings 62 It penetrates by a predetermined penetration dimension L (for example, 2 mm) in 56 radial directions.

  Minimum separation dimension M between the peeling pin 46 of the peeling cylinder 40 and the outer circumferential surface 56A of the peeling roll 56 (the peeling pin 46 disposed in the casing 42 and the narrow surface of the outer circumferential surface 56A of the peeling roll 56 are the diameter of the peeling roll 56. The separation dimension in the radial direction of the two peeling rolls 56 (for example, 19 mm) when opposed to each other in the direction perpendicular to each other is set to be equal to or less than the maximum diameter dimension of the reduced diameter portion 20 of the general bottle 12. The maximum thickness of the compressed bottle 12 is set to be equal to or smaller than the maximum thickness.

  Here, when the peeling roll 56 and the conveying blade 62 are rotated in the direction of arrow B, the compressed bottle 12 flowing down into the peeling cylinder 40 as described above is conveyed through the peeling chamber 58 to the front side and the upper side by the conveying blade 62. The For this reason, the label 14 of the compressed bottle 12 is caught by the liner blade 44B, the peeling pin 46 or the conveying blade 62 and pulled or cut by the liner blade 44B, the peeling pin 46 or the conveying blade 62, and the outer periphery of the peeling roll 56. The label 14 is peeled from the compression bottle 12 by being pulled by the frictional force with the surface 56A or the inner peripheral surface 40A of the peeling cylinder 40 (see FIG. 10B). Further, at least one of the cap 22 and the ring 22 </ b> A of the compression bottle 12 is caught by the liner blade 44 </ b> B, the peeling pin 46 or the conveying blade 62, and is pulled or broken by the liner blade 44 </ b> B, the peeling pin 46 or the conveying blade 62. Thus, at least one of the cap 22 and the ring 22A may be detached from the compression bottle 12.

  Further, as described above, the axial direction of the peeling cylinder 40 and the peeling roll 56 is inclined upward as it goes forward, and the axial direction of the peeling chamber 58 is inclined upward as it goes forward. For this reason, the residence time in the peeling chamber 58 of the compression bottle 12 is lengthened, and the peeling rate of the label 14 from the compression bottle 12 and the separation rate of the cap 22 and the ring 22A from the compression bottle 12 are improved. Further, the rear side of the peeling chamber 58 is communicated with the inside of the discharge box 36, and the cap 22 and the ring 22 </ b> A released from the compression bottle 12 are flowed down to the rear side of the peeling chamber 58, To be discharged.

  As shown in FIG. 1, the label peeling machine 10 is provided with a sorting unit 64 on the front side of the peeling unit 38.

As shown in FIGS. 3, 4, and 9, the sorting unit 64 is provided with a sorting box 66, and the inside of the sorting box 66 is communicated with the casing 42 of the peeling cylinder 40 in the peeling unit 38. For this reason, the compressed bottle 12 and the label 14 conveyed to the front side and the upper side by the conveying blade 62 of the peeling roll 56 in the peeling chamber 40 are conveyed (supplied) into the sorting box 66. The lower side wall of the sorting box 66 is disposed on the outer side in the radial direction of the casing 42, and has a shape along the peripheral wall of the casing 42. The upper wall of the sorting boxes 66 is located radially outwardly of the casing 42, while being curved upward in a convex shape and is inclined in a direction toward the upper as it goes to the left.

  A rectangular cylindrical bottle cylinder 68 is integrally provided on the right side of the intermediate portion in the vertical direction of the sorting box 66, and the inside of the bottle cylinder 68 is communicated with the sorting box 66. The axial direction of the bottle cylinder 68 is bent in a substantially L shape, and the proximal end portion of the bottle cylinder 68 is extended in the downward direction as it goes to the right side, and the distal end portion of the bottle cylinder 68 Is extended downward.

  A rectangular cylindrical label cylinder 70 is integrally provided on the left side of the upper portion of the sorting box 66, and the inside of the label cylinder 70 is communicated with the sorting box 66. The axial direction of the label cylinder 70 is bent in a substantially J shape, and the base end side portion of the label cylinder 70 is extended in the upward direction toward the left side, and the upper side wall becomes the upper side wall of the sorting box 66. While continuing smoothly, the front end side portion of the label cylinder 70 extends downward. An intermediate portion of the label cylinder 70 (a portion between the base end portion and the tip end portion) extends in a direction toward the lower side toward the left side. A large number of through holes 70A are formed through.

  In the sorting box 66, a dodecagonal columnar (substantially hexagonal columnar) sorting roll 72 is arranged. The sorting roll 72 is coaxially integrated with the peeling roll 56 of the peeling portion 38, and the peeling roll 56. And is rotatable in the direction of arrow B. The outer shape of the outer peripheral surface of the sorting roll 72 is the same as the outer shape of the outer peripheral surface 56A of the separation roll 56, and the outer surface of the sorting roll 72 is a long rectangular wide surface and a narrow surface. The outer peripheral surface 56A of the 56 is continuously arranged on the wide surface and the narrow surface. The gap dimension in the radial direction between the sorting roll 72 and the upper side wall of the sorting box 66 is larger than the gap dimension in the radial direction between the sorting roll 72 and the lower side wall of the sorting box 66. A sorting chamber 74 is formed between the upper side wall of the sorting box 66 and the sorting roll 72.

  A triangular plate-shaped sorting blade 76 (discharge blade) is fixed to the outer peripheral surface of the sorting roll 72 at the end opposite to the arrow B direction of each wide surface. And is rotatable in the direction of arrow B. The sorting blade 76 protrudes outward in the radial direction of the sorting roll 72, and the protruding direction of the sorting blade 76 is inclined and fixed to the opposite side of the arrow B direction with respect to the radial direction of the sorting roll 72. A predetermined angle β (see FIG. 9, for example, 20 °) is inclined with respect to the wide surface of the outer peripheral surface of the sorting roll 72. The protruding dimension of the sorting blade 76 is made smaller toward the rear side, thereby suppressing the transportation of the compressed bottle 12 and the label 14 from the peeling chamber 58 into the sorting box 66 is inhibited by the sorting blade 76. Has been.

  A blower 78 as a sorting means is connected to the lower wall of the base end of the bottle cylinder 68, and the blower 78 is driven so that the sort air (air) is sent into the base end of the bottle cylinder 68 and the sorting chamber. 74 (between the upper side wall of the sorting box 66 and the sorting roll 72) and sent into the label cylinder 70.

  Here, when the sorting roll 72 and the sorting blade 76 are rotated in the arrow B direction, the compressed bottle 12 and the label 14 conveyed in the sorting box 66 are moved around the outer periphery of the sorting roll 72 by the sorting blade 76 in the arrow B direction. And is discharged into the sorting chamber 74 in the direction of arrow B. On the other hand, the sorting air from the blower 78 passes through the sorting chamber 74 on the side opposite to the arrow B direction. For this reason, in the sorting chamber 74, the compressed bottle 12 and the label 14 and the sorting wind collide with each other from the opposite side, so that the compressed bottle 12 which is heavier than the label 14 is in the direction of arrow B against the sorting wind. The label 14, which is lighter than the compressed bottle 12, is moved to the side opposite to the arrow B direction by the sorting air, and the compressed bottle 12 and the label 14 are separated. Thus, the compressed bottle 12 is moved from the sorting chamber 74 into the bottle cylinder 68 against the sorting wind and discharged (flows down) from the tip of the bottle barrel 68, and the label 14 is labeled from the sorting chamber 74 by the sorting wind. The compressed bottle 12 and the label 14 are sorted by being moved into the cylinder 70 and discharged (flowed down) from the tip of the label cylinder 70.

  Further, the compression bottle 12 and the label 14 are discharged into the sorting chamber 74 by the sorting blade 76 in a fixed amount. For this reason, the accuracy of separation and sorting between the compressed bottle 12 and the label 14 is improved.

  Further, as described above, the protruding direction of the sorting blade 76 is inclined to the opposite side to the arrow B direction with respect to the radial direction of the sorting roll 72. For this reason, it is suppressed that the sorting blade 76 rotated in the arrow B direction obstructs the passage of the sorting wind in the sorting chamber 74 to the side opposite to the arrow B direction.

  Further, the sorting air sent into the label cylinder 70 as described above is discharged out of the label cylinder 70 through a large number of passage holes 70A in the middle portion of the label cylinder 70. For this reason, the sorting air is suppressed from being discharged from the front end of the label cylinder 70, and the collection of the labels 14 discharged from the front end of the label cylinder 70 is facilitated.

  Further, as described above, the sorting roll 72 is integrated with the peeling roll 56 so as to be integrally rotatable, and a small blower 78 with a simple configuration is used. For this reason, the sorting unit 64 is made small with a simple configuration.

  Moreover, in the label peeling machine 10, the compression part 26, the peeling part 38, and the selection part 64 are united. For this reason, the label peeling machine 10 is miniaturized.

  Next, the operation of this embodiment will be described.

  In the label peeling machine 10 configured as described above, when the bottle 12 is introduced from the charging hopper 24, the bottle 12 is passed between the pair of rotating compression rolls 30 in the compression cylinder 28 of the compression unit 26, The bottle 12 is compressed in the radial direction.

  Next, in the peeling part 38, the compression bottle 12 flows down from the inside of the compression cylinder 28 into the rear part of the peeling cylinder 40, and the peeling roll 56 and the conveying blade 62 are rotated in the direction of arrow B, whereby the compression bottle 12 Is conveyed to the front side and the upper side by the conveying blade 62 through the peeling chamber 58. For this reason, the label 14 of the compression bottle 12 is pulled by the liner blade 44B, the peeling pin 46, or the conveying blade 62 of the peeling cylinder 40, and pulled or cut by the liner blade 44B, the peeling pin 46, or the conveying blade 62. The label 14 is peeled from the compressed bottle 12 by being pulled by a frictional force with the outer circumferential surface 56 </ b> A of the roll 56 or the inner circumferential surface 40 </ b> A of the peeling cylinder 40.

  Next, in the sorting unit 64, the compressed bottle 12 and the label 14 are conveyed from the peeling chamber 58 into the sorting box 66, the sorting roll 72 and the sorting blade 76 are rotated in the direction of arrow B, and the blower 78 is sorted. By sending the wind, in the sorting chamber 74 (between the upper wall of the sorting box 66 and the sorting roll 72), the compressed bottle 12 and the label 14 are discharged in the direction of arrow B by the sorting blade 76, while the sorting wind is Passes to the opposite side of the arrow B direction. Therefore, in the sorting chamber 74, the compressed bottle 12 is moved in the arrow B direction against the sorting wind, and the label 14 is moved in the direction opposite to the arrow B direction by the sorting wind. Is discharged from the front end of the bottle cylinder 68, and the label 14 is discharged from the front end of the label cylinder 70, and the compressed bottle 12 and the label 14 are selected.

  Here, in the peeling portion 38, the cross-sectional outer shape of the inner peripheral surface 40 </ b> A of the peeling cylinder 40 is a 14-sided shape, and the cross-sectional external shape of the outer peripheral surface 56 </ b> A of the peeling roll 56 is a dodecagonal shape. For this reason, the peeling roll 56 and the conveyance blade 62 are rotated, and the compression bottle 12 is rotated in the circumferential direction of the peeling chamber 58 (between the inner peripheral surface 40A of the peeling cylinder 40 and the outer peripheral surface 56A of the peeling roll 56). At this time, the change in the radial dimension of the peeling chamber 58 through which the compression bottle 12 passes can be increased, and the change in pressure applied to the compression bottle 12 from the inner peripheral surface 40A of the peeling cylinder 40 and the outer peripheral surface 56A of the peeling roll 56 can be increased. Can be increased. Thereby, especially when the pressure which acts on the compression bottle 12 from the inner peripheral surface 40A of the peeling cylinder 40 and the outer peripheral surface 56A of the peeling roll 56 increases, the label 14 of the compression bottle 12 is attached to the outer peripheral surface 56A of the peeling roll 56 or It can be effectively pulled by the frictional force with the inner peripheral surface 40A of the peeling cylinder 40, the label 14 can be effectively peeled from the compression bottle 12, and the peeling efficiency of the label 14 from the compression bottle 12 can be improved.

  Furthermore, the cross-sectional outer shape of the inner peripheral surface 40 </ b> A of the peeling cylinder 40 and the cross-sectional outer shape of the outer peripheral surface 56 </ b> A of the peeling roll 56 are not similar. For this reason, unlike the case where the cross-sectional outer shape of the inner peripheral surface 40A of the peeling cylinder 40 and the cross-sectional outer shape of the outer peripheral surface 56A of the peeling roll 56 are similar, the full width of the peeling roll 56 when the peeling roll 56 is rotated. It is possible to prevent the rotational resistance of the peeling roll 56 from increasing due to the portions simultaneously facing the center in the width direction of all the side surfaces of the inner peripheral surface 40 </ b> A of the peeling cylinder 40. Thereby, while being able to reduce the load of the drive motor 60 which drives the peeling roll 56, the noise of the peeling part 38 can be reduced.

  Further, the liner blade 44 </ b> B and the peeling pin 46 protrude from the inner peripheral surface 40 </ b> A of the peeling cylinder 40, and the conveying blade 62 protrudes from the outer peripheral surface 56 </ b> A of the peeling roll 56. For this reason, when the peeling roll 56 and the conveying blade 62 are rotated and the compressed bottle 12 is rotated in the circumferential direction of the peeling chamber 58, the compressed bottle 12 (including the label 14) has the liner blade 44B, the peeling pin 46, or The label 14 can be effectively pulled or cut by being caught by the conveying blade 62 by the liner blade 44B, the peeling pin 46 or the conveying blade 62, and the label 14 can be pulled by the outer peripheral surface 56A of the peeling roll 56 or the inner peripheral surface 40A of the peeling cylinder 40. It can be effectively pulled by the frictional force. Thereby, the label 14 can be more effectively peeled from the compression bottle 12, and the peeling efficiency of the label 14 from the compression bottle 12 can be further improved.

  Furthermore, the minimum separation dimension M between the peeling pin 46 of the peeling cylinder 40 and the outer peripheral surface 56A of the peeling roll 56 (the narrow surface of the outer circumferential surface 56A of the peeling pin 46 and the peeling roll 56 disposed in the casing 42 of the peeling cylinder 40) Are separated from each other in the radial direction of the peeling roll 56 and spaced apart from each other in the radial direction of the peeling roll 56). The maximum thickness dimension of the general compressed bottle 12 is set to be equal to or smaller than the maximum thickness dimension. In addition, the peeling pin 46 disposed in the casing 42 reaches the rotation outermost locus circle of the conveying blade 62 (the circumscribed circle of the plurality of conveying blades 62), and is peeled inside the rotation outermost locus circle of the conveying blade 62. The roll 56 has entered a predetermined penetration dimension L in the radial direction. For this reason, the compression bottle 12 can be effectively sandwiched in the compression direction between the peeling pin 46 (particularly the peeling pin 46 disposed in the casing 42) and the outer peripheral surface 56A (particularly the narrow surface) of the peeling roll 56, The frictional force between the compressed bottle 12 (including the label 14) and the outer peripheral surface 56A of the peeling roll 56 can be further increased, and the rotation of the compressed bottle 12 around the axial direction can be suppressed. Thereby, the compression bottle 12 can be effectively rotated integrally with the peeling roll 56, and the label 14 of the compression bottle 12 can be more effectively pulled or cut by the peeling pin 46, and the label 14 is separated from the peeling roll 56. It can be more effectively pulled by the frictional force with the outer peripheral surface 56A. Therefore, the label 14 can be more effectively peeled from the compressed bottle 12, and the peel efficiency of the label 14 from the compressed bottle 12 can be further improved.

  Moreover, a plurality of liner blades 44 </ b> B are continuously formed in the longitudinal direction at the end portion in the width direction of the liner 44, so that the plurality of liner blades 44 </ b> B are continuously disposed in the axial direction of the peeling cylinder 40. For this reason, the label 14 of the compression bottle 12 can be effectively pulled or cut by the plurality of liner blades 44B, and the label 14 can be effectively peeled from the compression bottle 12 even when the label 14 is adhered to the compression bottle 12. The separation efficiency of the label 14 from the compressed bottle 12 can be further improved.

  Liner blades 44 </ b> B are formed at both ends in the width direction of the liner 44. Here, since the peeling roll 56 is rotated in the arrow B direction, the liner blade 44B on the opposite side of the liner 44 from the arrow B direction is easily worn due to an increased frictional force applied from the compression bottle 12. For this reason, when the liner blade 44B on the opposite side to the arrow B direction of the liner 44 is worn, the liner 44 is attached to the casing 42 with the one side in the width direction opposite to the other side in the width direction. The liner blade 44B opposite to the arrow B direction of 44 can be made unworn. As a result, the period during which the liner 44 needs to be replaced can be lengthened.

  In the present embodiment, the outer cross-sectional shape of the inner peripheral surface 40A of the peeling cylinder 40 is an even-numbered square (14-sided), and the cross-sectional outer shape of the outer peripheral surface 56A of the peeling roll 56 is an even-numbered square (decagonal). However, the cross-sectional outer shape of one of the inner circumferential surface 40A of the peeling cylinder 40 and the outer circumferential surface 56A of the peeling roll 56 is odd-numbered, and the other sectional surface of the inner circumferential surface 40A of the peeling cylinder 40 and the outer circumferential surface 56A of the peeling roll 56 is. The outer shape may be an even square. Thereby, when the peeling roll 56 rotates, it can suppress appropriately that the rotational resistance of the peeling roll 56 becomes large.

  Moreover, in this embodiment, the cross-sectional external shape of 56 A of outer peripheral surfaces of the peeling roll 56 was made into polygonal shape. However, the cross-sectional outer shape of the outer peripheral surface 56A of the peeling roll 56 may be circular.

  Furthermore, in this embodiment, the axial direction of the peeling cylinder 40 and the peeling roll 56 is disposed so as to be inclined with respect to the horizontal direction. However, you may arrange | position the axial direction of the peeling cylinder 40 and the peeling roll 56 in parallel with respect to a horizontal direction.

DESCRIPTION OF SYMBOLS 10 Label peeling machine 12 Bottle 14 Label 40 Peeling cylinder 40A Inner peripheral surface 56 Peeling roll 56A Outer peripheral surface

Claims (1)

A peeling cylinder having a cylindrical shape and a polygonal cross-sectional outer shape;
A bottle that is arranged in the peeling cylinder, has a polygonal outer cross-sectional outer shape, is flexible and has a label attached thereto, is transported between the peeling cylinder, and is rotated to rotate the bottle. A peeling roll from which the label is peeled off,
The cross-sectional outer shape of one of the inner peripheral surface of the peeling cylinder and the outer peripheral surface of the peeling roll is an odd-numbered square, and the other cross-sectional outer shape of the inner peripheral surface of the peeling cylinder and the outer peripheral surface of the peeling roll is an even number. The label peeling machine which made it square and made the cross-sectional external shape of the internal peripheral surface of the said peeling cylinder and the cross-sectional external shape of the outer peripheral surface of the said peeling roll into a non-similar shape .