JP2005335729A - Label pasting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a label pasting apparatus capable of surely transferring a label issued from a label issuing part to a predetermined position without using a suction fan. <P>SOLUTION: In the label pasting apparatus, a label issued from the label issuing part provided below a commodity carrying means is transferred to a label pasting position provided in the middle of the carrying direction of the commodity carrying means by a label transferring means, and the label is pasted on the undersurface of the commodity passing through the label pasting position. The label transferring means is composed of a plurality of endless belts wound in parallel over two rollers separated at a predetermined interval, driven and rotatable, a gas flowing path positioned on the lower side of the endless belts and whose upper face is positioned between mutual belts, and a gas jetting means jetting a gas in the gas flowing path. A suction force is generated in an opening of the upper face of the gas flowing path by jetting the gas in the gas flowing path from the gas jetting means, and the label issued from the label issuing part is transferred while it is sucked and held on the belt surface through the opening. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a label affixing device for affixing a label (lower label) on which predetermined items are printed on a lower surface of a product conveyed on a conveying device such as a belt conveyor, and in particular, a label issued from a label issuing unit is in the middle of the conveying device. The present invention relates to a label transfer means for transferring to the label attaching position.

  2. Description of the Related Art An underlay type label affixing device that affixes a label (lower label) on which predetermined items (additives, production place, etc.) are printed on a lower surface of a product conveyed by a conveyor device such as a belt conveyor is already known. (For example, see Patent Document 1)

  And the method of transferring the label issued from the label issuing part arrange | positioned under conveying apparatuses, such as a belt conveyor, to the label sticking position (opening part) formed in the conveyance direction of the conveying apparatuses, such as the said belt conveyor As described above, a plurality of endless belts are inclined and arranged in parallel from the label issuing unit toward the label application position, and a suction fan is disposed on the back side of the plurality of endless belts, and is issued from the label issuing unit. When the label is put on the endless belt, the label is sucked to the belt surface side by the suction force generated between the endless belts by the rotation of the suction fan, and the endless belt rotates to rotate the endless belt. A method of transferring to a predetermined position by rotation of the belt while adsorbing to the surface is employed.

  However, the above-described label transfer means uses a suction fan (blower fan) to suck the issued label to the belt surface side. However, a space for providing the suction fan is required, and the label suction means In order to generate the required suction force over the entire length of the label transfer section, a corresponding fan is required. For this purpose, one large suction fan or a plurality of small suction fans are used, but in either case, a large space is required, and the apparatus including the label transfer means becomes large. .

  When the suction fan is used, if the maintenance is insufficient, a predetermined suction force is not generated, and as a result, there is a problem that a label sticking failure occurs. Further, when performing maintenance, since the suction fan is accommodated in the case, it has to be disassembled for maintenance, and the maintenance work becomes difficult.

JP 2004-90927 A

  The present invention has been made in view of the above-described problems of the prior art, and the object is to reliably transfer a label issued from a label issuing unit to a predetermined position without using a suction fan. The object is to provide a labeling device.

In order to achieve the above-mentioned object, the technical means taken by the present invention is to provide a label issued from a label issuing unit provided below the product transport means in the transport direction of the product transport means by the label transport means. In the label applicator for transferring the label to the label application position and applying the label to the lower surface of the product passing through the label application position, the label transfer means is driven by being wound in parallel across two rollers separated by a predetermined distance. A plurality of rotatable endless belts, a gas flow path below the endless belt and having an upper surface positioned between the belts, and a gas discharge means for discharging gas into the gas flow paths. A suction force is generated in the opening on the upper surface of the gas flow passage by discharging gas into the gas flow passage from the gas discharge means, and the label issued from the label issuing unit is belted through the opening. And wherein the transferring while sucking and holding the surface (claim 1).
There are at least two endless belts for transferring the labels issued from the label issuing unit, and plural sets of two may be used depending on the size of the labels to be transferred.
The gas flow passage is a partitioned space through which gas (compressed air) discharged from the gas discharge means flows, and the cross-sectional shape of the space may be any of a square, a circle, and the like, and the upper surface of the gas flow passage There is a place where the gas (compressed air) is released on the peripheral surface except for the surface, the surface facing the discharge direction of the gas discharging means, the surface facing the upper surface (lower surface), the surface of the gas discharging means Any surface, such as a surface opposite to the discharge direction, may be used. However, in order to discharge gas (compressed air) along the flow and generate a stable suction force over the entire length of the gas flow path, A surface facing the discharge direction is effective.

  According to the above means, when a gas, for example, compressed air is discharged from the gas discharge means, the compressed air flows in the gas flow passage, and the velocity of the air in the passage increases, whereby the pressure in the gas flow passage is increased. Decreases. Then, a pressure difference occurs between the inside and outside of the gas flow passage, and the air on the outside of the gas flow passage having a high air pressure, that is, the air on the label transfer surface side moves to the inside of the gas flow passage from the opening formed on the upper surface defining the gas flow passage. To flow. As a result, the label fed on the endless belt arranged in parallel from the label issuing unit is adsorbed to the belt surface side by the suction force generated in the opening formed between the belts, and the belt is rotated by the rotation of the endless belt. It is transferred to the end side.

In addition, the endless belt for transferring the label is not limited to a configuration in which a plurality of endless belts are arranged in parallel, but may be one wide. That is, the label issued from the label issuing unit provided below the product conveying means is transferred by the label transfer means to the label applying position provided in the conveying direction of the product conveying means, and passes through the label applying position. In a label affixing apparatus for affixing a label to the lower surface of a product, the label transfer means is an endless belt that can be rotated by being wound around two rollers separated by a predetermined distance, and a vent hole provided in the endless belt. A gas flow passage having an upper surface corresponding to the belt along the longitudinal direction of the belt below the endless belt, and a gas discharge means for discharging gas into the gas flow passage. By discharging gas from the discharge means into the gas flow path, a suction force is generated in the opening on the upper surface of the gas flow path, and the label issued from the label issuing unit is applied to the belt surface through the opening. And wherein the transferring while wearing maintained (claim 2).
According to the above means, when gas (compressed air) is discharged from the gas discharge means into the gas flow passage, the pressure difference between the inside and outside of the gas flow passage is caused by the same action as described above, and the gas having a high pressure. The air on the outside of the flow passage, that is, on the label transfer surface side, flows so as to move to the inside of the gas flow passage from the opening formed in the upper surface that defines the gas flow passage through the vent hole of the endless belt. As a result, the label fed from the label issuing unit onto the endless belt is adsorbed on the belt surface side by the suction force generated in the vent hole formed in the endless belt, and transferred to the belt end side by the rotation of the endless belt. Is done. Further, as in the first aspect, the gas (compressed air) is discharged along the flow by having a place where the gas (compressed air) is released on the surface of the gas flow passage facing the discharge direction of the gas discharge means. Thus, a stable suction force can be generated over the entire length of the gas flow passage.

  As the form of the opening formed on the upper surface of the gas flow passage, a slit along the longitudinal direction of the belt (Claim 3), or a small hole formed in the longitudinal direction along the longitudinal direction of the belt (Claim 4), etc. Can be mentioned. In the case of the former slit, the slit width is several mm. However, the width of the slit differs depending on the pressure and amount of gas discharged into the gas flow passage, the size of the flow passage, the size of the gas discharge means, and the like. In the case of the latter small hole, the hole size, opening position, the number of holes, etc. are the same as in the case of the slit, and the pressure and amount of gas discharged to the gas flow passage, the size of the flow passage, the gas discharge means It depends on the size of the.

In addition, an injection unit that injects gas toward the upper surface of the label that is sucked and held by the label transfer unit may be disposed above the label transfer unit. In that case, the installation position of the ejection means is not limited, but the vicinity where the label fed from the label issuing unit is transferred to the endless belt of the label transfer means (the start end side of the label transfer means) is effective.
According to the above means, the gas (compressed air) ejected from the ejecting means works to press the label against the endless belt, and supports the label being adsorbed to the surface side of the endless belt.
When the ejecting means is provided in the vicinity where the issued label is transferred to the endless belt (the start end side of the label transferring means), the front end portion of the issued label is caused by gas (compressed air) from the ejecting means. Firmly pressed against the endless belt. Thereby, it is possible to improve the adhesive breakage that the rear end portion of the label is surely peeled off from the label roll. The supply source of the gas injected from the injection unit may be the same as the supply source of the gas discharged from the gas discharge unit to the gas flow path described above, or may be a separate supply source.

Further, the gas discharge means for discharging the gas into the gas flow passage may discharge the gas at all times, but may discharge the gas during the rotation of the endless belt. .
When gas (compressed air) is discharged only when the endless belt rotates, gas is discharged only when necessary, that is, when the label is transported. it can.

The opening includes a first portion corresponding to the downstream side of the discharge port of the gas discharge unit and a second portion corresponding to the upstream side of the discharge port.
According to the above means, the gas (compressed air) discharged downstream from the discharge port is sucked out of the passage by the flow velocity flowing through the gas flow passage, and generated by the gas discharged upstream from the discharge port. Since there is a portion that is sucked through the opening on the upper surface of the gas flow passage due to the negative pressure, the length of the opening that can be stably sucked compared to the case of only the first portion corresponding to the downstream side of the discharge port Can be long.

According to the label sticking device of the present invention, the air pressure in the passage is lowered by increasing the flow velocity of the gas in the gas flow passage. Then, when a pressure difference occurs between the inside and outside of the gas flow passage, a suction force is generated at the opening between the belts formed on the upper surface of the flow passage. Thereby, the label located on the upper surface of the belt is attracted to the belt surface by the suction force, and is conveyed while maintaining the suction of the label to the vicinity of the label application position by the rotation of the endless belt.
Therefore, the label can be transported to the label application position with a smaller size and more reliably than a device using a conventional fan.
In addition to the effect of the first aspect, since the vent hole is formed in the endless belt itself, the suction force acts on the vent hole and the label is adsorbed on the belt surface. Is done. Thereby, the label can be reliably adsorbed and transferred to the surface of the endless belt.

  In addition, since the opening (slit, small hole) on which the suction force acts can be formed by the length of the substantially endless belt, the label can be sucked and held during the transfer by the endless belt. Therefore, it is possible to prevent a label transfer failure and reliably transfer the label to the label application position.

  Furthermore, according to the structure of claim 5, the label is pressed against the surface side of the endless belt by gas injection, and the label can be transported stably. When the ejection unit is arranged on the start end side of the label transfer unit, the front end portion of the issued label is firmly pressed against the endless belt side by the gas (compressed air) from the ejection unit. Thereby, it is possible to improve the adhesive breakage that the rear end portion of the label is surely peeled off from the label roll.

According to the sixth aspect of the present invention, gas (compressed air) is discharged only when the endless belt rotates, so that use of gas can be eliminated and gas can be supplied efficiently.
Further, according to the configuration of claim 7, the gas discharged at the downstream side of the discharge port is generated by the gas discharged at the upstream side of the discharge port, while the air outside the passage is sucked by the flow velocity flowing through the gas flow passage. Since there is a portion that is sucked through the opening on the upper surface of the gas flow passage due to the negative pressure, the length of the opening that can be stably sucked compared to the case of only the first portion corresponding to the downstream side of the discharge port Can be lengthened.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a label applicator provided with an upper label applicator near the product transport means. In the figure, A is a product transport means for transporting a product W, and a slit S is provided in the transport direction of the product transport means A. The label issuing unit B and the label transferring unit for transferring the label L1 issued from the label issuing unit B to the lower surface side of the product W through the slit S are provided below the conveying unit A. C is disposed, and the label transfer means C integrated with the label issuing unit B is supported by a moving mechanism D so as to be movable in the width direction of the transport path along the slit S. Near the side, an upper label attaching part E for attaching the upper label L2 to the upper surface of the product W is arranged.

  Commodity conveying means A has two long and short conveyor parts A1 and A2 formed of belt conveyors arranged in a straight line on one frame part 1 so as to be detachable, and the conveyor parts A1 and A2 are connected to each other. Two drive rollers 8 and 8 ′ are disposed between them in a direction orthogonal to the transport direction of the transport means, and slits S are defined by the drive rollers 8 and 8 ′.

  The long conveyor section A1 mounted on the frame section 1 includes a frame body 2 configured to be able to adjust the length of the conveyor (the distance between the left and right rollers around which the endless belt is wound and supported), and the longitudinal direction of the frame body 2 Rollers 3 and 3 'supported horizontally on both sides, an endless belt 4 wound around a pair of left and right rollers 3 and 3', and one roller 3 (on the left side in the drawing) A rotation transmission belt (timing belt) (not shown) for applying a rotational force to the roller is provided, and the rotation transmission belt is configured to be rotated by a motor 29 provided in the frame portion 1. .

  The short conveyor part A2 mounted on the frame part 1 has a shorter conveyor length than the long conveyor part A1, and the entire conveyor has the same configuration as the long conveyor part A1. That is, the frame 5 is configured such that the length of the conveyor (the distance between the left and right rollers supporting the endless belt by winding) can be adjusted, and the rollers 6 and 6 'supported horizontally on both sides of the frame 5 in the longitudinal direction. The endless belt 7 is wound around the pair of left and right rollers 6 and 6 '.

The driving rollers 8, 8 ′ are positioned between the terminal end side (roller 3 ′) of the long conveyor portion A1 and the starting end side (roller 6) of the short conveyor portion A2, and are rotatably mounted on the frame portion 1, The drive rollers 8 and 8 'are configured to drive and rotate by utilizing the rotation of the endless belt 4 of the long conveyor section A1. The drive rollers 8 and 8 'may be configured to be driven using a separate dedicated drive source.
A slit S is defined by the two drive rollers 8 and 8 ′ and the frame portion 1 that supports the drive rollers 8 and 8 ′. Thereby, the slit S is formed over the entire axial length of the drive rollers 8 and 8 '.
The drive rollers 8 and 8 'are subjected to surface processing (for example, Teflon processing) so as to prevent the label L1 transferred by the label transfer means C disposed below the sticking rollers 8 and 8' from sticking.

  A label issuing unit B is supported by the moving mechanism D so as to be slidable in a direction perpendicular to the conveying direction of the conveying means A below the commodity conveying means A configured as described above. The side of the label issuing unit B is integrally provided with a label transfer means C that transfers the issued label toward the slit S.

The label issuing unit B prints and issues required data such as a barcode, an additive name, and a place of origin display on the label L1 based on data input from the console unit of the packaging device (not shown). The printer 9 is configured.
The label printer 9 includes a label roll 9a, a thermal head 9b, a platen roller 9c, a mount take-up roller 9d, a feed roller 9e, and the mount, the label roll 9a being detachably attached to the mount in the frame 10. This is a well-known device provided with a motor (not shown) for driving and rotating the take-up roller 9d and the feed roller 9e, and the necessary items are printed on the label on the mount by the thermal head 9b and the platen roller 9c. The label is peeled off from the mount by the dispenser 9g at the tip of the platen roller 9c, sent to the issuing port, and passed to the endless belt of the label transfer means C arranged to face the issuing port. It should be noted that the label roll 9a is arranged so that the direction in which the paper is drawn from the label roll 9a is the same as the conveyance direction of the long conveyor portion A1 that constitutes the commodity conveyance means A.

  The label transfer means C for transferring the label L1 printed and issued from the label issuing unit B toward the slit S is transferred by adsorbing and holding the label L1 on the endlessly rotating belt surface. As shown in FIG. 1, a belt conveyor 11 in which two endless belts 11a and 11b are installed in parallel with a gap in the width direction, a gas flow passage 12 disposed inside the belt of the belt conveyor 11, and the gas flow A gas discharge means 13 for supplying and discharging gas (compressed air) to the passage 12 and an opening 14 formed of a slit formed in the upper surface of the gas flow path 12 are configured. By discharging the gas (compressed air), the air flow in the gas flow passage 12 decreases the air pressure in the passage, thereby drawing outside air from the opening 14 and sucking it into the opening 14. Force is generated, and is configured to transfer by adsorbing the label on the belt conveyor 11 surface.

  The belt conveyor 11 that transports the label L1 rotates the rollers 16a and 16b to the frame 15 that extends from the issuing port of the label issuing unit B to the vicinity of the driving rollers 8 and 8 'that constitute the slit S provided in the conveyance path. A drive roller 16c that is pivotably mounted and further rotated by a motor 17 is disposed, and two endless belts 11a and 11b are wound around the rollers 16a, 16b, and 16c at intervals in the width direction. Has been. Thereby, the endless belts 11 a and 11 b are rotated by the rotation of the roller 16 c driven by the motor 17. Note that the rotation system of the illustrated endless belts 11a and 11b is a so-called center drive system, but may be a head drive system.

The rollers 16a and 16b are rotatably supported on both sides in the longitudinal direction of a mounting frame 15a obtained by bending a metal flat plate into a substantially U-shaped cross section as shown in FIG. Further, a recess 12a that defines the gas flow passage 12 is formed by bending, except for the support portions of the rollers 16a and 16b. A pair of left and right flat plates 15b forming a slit opening 14 within the width of the recess 12a are screwed and fixed to the upper surface of the mounting frame 15a to form the gas flow passage 12.
The width of the opening (slit) 14 formed by the pair of left and right flat plates 15b is several mm. The width of the opening (slit) 14 is determined according to the pressure and amount of gas discharged to the gas flow passage 12, the size of the flow passage, the size of the gas discharge means 13, and the like. In addition, the longitudinal direction (vertical direction) of the recess 12a that partitions the gas flow passage 12 is opened, and the escape portion of the gas discharged into the gas flow passage 12 is secured.

A gas discharge means 13 made of a tubular body is fitted and arranged on one side (lower side in the drawing) of the gas flow passage 12 toward the other side (upper side in the drawing) of the gas flow passage 12. It is comprised so that gas may be discharged. The cross-sectional shape of the tube constituting the gas discharge means 13 is not limited to the circular shape shown in the figure, and may be a square shape, and the length thereof is arbitrary. That is, only the discharge port 13 ′ may be exposed in the gas flow passage 12 (only the first portion). However, as a result of the experiment, it is effective that the length of the tube body is approximately half of the length of the gas flow passage 12.
That is, the discharge port 13 ′ of the gas discharge means 13 is located approximately half the length of the gas flow passage 12, that is, the opening (slit) 14.
And in the part (first part) located on the downstream side of the discharge port 13 ′ of the opening (slit) 14, a suction force is generated by discharging gas (compressed air) from the discharge port 13 ′. The portion (second portion) located upstream from the discharge port 13 ′ is sucked based on the negative pressure relatively generated in the gas flow passage 12 by the gas (compressed air) discharged from the discharge port 13 ′. Force is generated. Therefore, the opening (slit) 14 that can be stably suctioned can be made longer than in the case of only the first portion corresponding to the downstream side of the discharge port 13 ′.
Furthermore, it is more effective that the diameter of the tube body is smaller than the cross section of the gas flow passage 12.
The gas discharge means 13 is connected to a gas supply source. If the gas used is compressed air, use an air compressor.

In addition, above the start end side of the label transfer means C configured as described above, the label L1 transferred from the label issuing unit B onto the belt conveyor 11 of the label transfer means C is blown to the end of the belt conveyor 11 by gas blowing. Injecting means 18 is arranged to press the belts 11a and 11b.
The injection means 18 is configured by opening a plurality of injection ports 18a along the length direction on the peripheral surface of the pipe, one end of the pipe is closed, and the other end side is connected to a gas supply source by a tube or the like. Has been. And it arrange | positions so that the conveyance direction of the belt conveyor 11 in the label transfer means C may be crossed. As the supply source of the gas to be injected, the supply source of the gas discharge means 13 is used, and the supply path is branched to be used.

  As shown in the gas flow diagram of FIG. 10, the air compressed by the air compressor 19 is discharged from the gas discharge means 13 and the injection means 18 by the air regulator 20 at a predetermined pressure (about 0). .4 Mpa) and flows to the electromagnetic valve 21. On the other hand, when the product W blocks the label issuing sensor 23 installed on the product conveying means A, a label L1 is printed and issued by the label issuing unit B, and the motor 17 of the belt conveyor 11 in the label transferring means C is driven almost endlessly. The belts 11a and 11b are driven to rotate. At the same time, a predetermined voltage (24 V DC) is applied to the electromagnetic valve 21 to open the valve, and compressed air adjusted to a predetermined flow rate by the speed controllers 22 and 22 ′ is supplied from the gas discharge means 13 and the injection means 18. Discharged.

FIG. 8 shows another modification of the belt conveyor 11 in the label transfer means C.
In FIG. 8A, the openings (slits) 14 formed on the upper surface of the gas flow passage 12 in the above-described embodiment are formed by tandem formation of the small holes 24. Thus, air is sucked into the gas flow passage 12, and the label L1 is adsorbed and held through the gap between the endless belts 11a and 11b.
FIG. 8B shows that the belt conveyor 11 of the label transfer means C is constituted by a single wide endless belt 25, and the longitudinal direction (circumferential direction) of the endless belt 25 at a substantially central position in the width direction. ) In parallel, and a pair of left and right flat plates 15b that define the upper surface of the gas flow passage 12 are formed with openings (slits) 14 that are slightly wider than the small holes 26. Air is sucked into the gas flow passage 12 through the small holes 26 and the openings (slits) 14. Thereby, the label L1 is adsorbed on the endless belt 25 by the suction force generated in the small hole 26.
FIG. 8C shows two sets of belt conveyors 11 configured by arranging endless belts 11a and 11b in the above-described embodiment side by side, and can correspond to a wide label L1 ′. it can.

FIG. 9 is an electric block diagram of the label sticking apparatus described above. The CPU 27 that controls each block has a motor drive unit 29 for driving the conveyor of the product conveying means A via the bus 28, a label issuing unit B, a label issuing sensor 23, A motor drive unit 17 that drives the belt conveyor of the label transfer means C, a display / operation unit 30, a ROM 31, a RAM 32, and an electromagnetic valve 21 are connected.
The CPU 27 controls each part of the apparatus by performing processing using the work area of the RAM 32 according to the control program of the ROM 31.
The ROM 31 stores a predetermined control program executed by the CPU 27.
The RAM 32 stores a working area in which flags, registers, and the like used when the CPU 27 performs various processes, a product file, a print format file, and the like.
The motor drive unit 29 rotationally drives the conveyor (long conveyor A1) that constitutes the commodity conveying means A, and the rotation of the motor 29 can be controlled by giving a control signal from the CPU 27.
The label issuing unit B issues a lower label L1 to be attached to the lower surface of the product based on the control of the CPU 27. The label issuing unit B may have a printing function, or may automatically issue a label on which predetermined items are printed in advance.
The label issuing sensor 23 is a detector that is provided on the upstream side of the label attaching position of the product conveying means A and detects that the product W has passed. The form of the sensor may be any of a translucent type and a reflective type.
The motor drive unit 17 of the label transfer unit C is a drive motor for the belt conveyor 11 that transfers the issued label L1 to the vicinity of the label application position (slit S) of the product transfer unit A, and is controlled by the CPU 27. And if the goods W are detected by the label issue sensor 23, it will drive substantially simultaneously.
The display / operation unit 30 is disposed in front of the console of the packaging device (not shown), and can input a unit price, a product name, and the like by an operator's operation.
The electromagnetic valve 21 controls the air flow based on the control of the CPU 27. As in the case of the label moving motor driving unit 17, when a product or the like is detected by the label issuing sensor 23, the valve is opened for a predetermined time (time for the label to reach the application position), and the compressed air is discharged from the gas discharge means 13. And discharged from the injection means 18. That is, compressed air is discharged only when the label is transferred.

Next, the suction transfer of the lower label L1 by the label transfer means C will be described with reference to FIG.
The label issuing sensor 23 arranged on the side of the product conveying means A detects the product W, and the lower label L1 is issued from the label issuing unit B by the detection signal, and the motor 17 of the belt conveyor 11 of the label transfer means C is substantially simultaneously. Is driven. Further, the electromagnetic valve 21 is opened substantially simultaneously with the opening, and the compressed air adjusted to a predetermined flow rate by the speed controllers 22 and 22 ′ is discharged from the gas discharge means 13 and the injection means 18.
When compressed air is discharged from the gas discharge means 13 to the closed gas flow passage 12, the velocity of the air in the gas flow passage 12 increases, and the pressure in the gas flow passage 12 decreases as the flow velocity increases. . As a result, a difference in atmospheric pressure occurs between the inside and outside of the gas flow passage 12, and the air outside the gas flow passage 12 having a high air pressure, that is, the air on the label transfer surface side, faces the gap between the endless belts 11a and 11b. It moves into the gas flow passage 12 through an opening 14 formed in the upper surface of the flow passage 12. Accordingly, a suction force is generated in the opening 14, and the lower label L1 fed out from the label issuing unit B is adsorbed onto the belt conveyor.
Then, when the compressed air is blown toward the belt surface side from the jetting means 18 disposed above the starting end side of the label transfer means C, the lower label transferred to the label transfer means C as shown in FIG. The front portion of L1 is firmly pressed against the belt surface side by the compressed air from the injection means 18. The lower label L1, which is transferred to the label transfer means C and whose front side portion is pressed by the jet of compressed air, is attracted to the belt surface side by the suction force and is transferred by the rotation of the endless belts 11a and 11b. Accordingly, as shown in FIG. 7B, the rear end portion of the lower label L1 transferred to the label transfer means C is reliably peeled off from the label roll (mounting paper) with good adhesiveness.
The lower label L1 adsorbed on the belt conveyor 11 of the label transfer means C and transferred toward the product transport means A by the operation of the belt conveyor 11 is in the middle of the product transport means A as shown in FIG. It is affixed to the lower surface of the product W passing through the slit S through the formed slit S.

The present invention is not limited to the above-described embodiment, and can be changed without departing from the scope of the present invention.
(1) Although the illustrated product conveying means is constituted by two belt conveyors, it may be constituted by one conveyor as shown in Patent Document 1, and the label affixing position in that case is on the conveyor. A well-known structure providing an opening is adopted.
(2) The label issuing unit may not be provided with a printing function and may simply issue a label on which predetermined items are printed.
(3) The gas supplied to the gas flow path of the label transfer means and the injection means may be a gas other than air, such as nitrogen gas.
(4) The product conveying means may be provided with a guide member for controlling the label sticking position on the product.

  The label sticking apparatus according to the present invention can be continuously performed from packaging to label sticking by connecting to the product discharge side of the packaging device for packaging the product with a stretch film.

The front view which shows an example of the label sticking apparatus which concerns on this invention. The partial notch expansion front view which shows the principal part. FIG. 3 is a partially cutaway side view taken along line (3)-(3) in FIG. 2. The disassembled perspective view which shows the gas flow path of a label transfer means. (A) is an expanded sectional view which follows the (5)-(5) line | wire of FIG. 2, (b) is the elements on larger scale which show the adsorption | suction state of a label. The bottom view which follows the (6)-(6) line | wire of FIG. (A), (b) is explanatory drawing which shows the state which the issued label transfers to a label transfer means, and is adsorbed and hold | maintained, (c) is explanatory drawing which shows the state in which the adsorbed and transferred label is stuck on the lower surface of goods. (A), (b), (c) is a side view which shows the other example of the opening formed in the upper surface of the belt conveyor and gas flow path of a label transfer means. The electric block diagram of the label sticking apparatus shown in FIG. The block diagram which shows the flow of gas (compressed air).

Explanation of symbols

A ... Merchandise conveying means B ... Label issuing section
C ... Label transfer means W ... Product L1 ... Lower label 11 ... Belt conveyor 12 ... Gas flow passage 13 ... Gas discharge means 14 ... Opening (slit) 18 ... Injecting means 26 ... Opening (small hole)

Claims (7)

The bottom surface of the product which passes a label issued from a label issuing unit provided below the product conveying means to a label attaching position provided in the middle of the conveying direction of the product conveying means by the label transfer means and passes through the label attaching position In a label sticking device for sticking a label to
A plurality of endless belts that can be rotated in parallel by being wound around two rollers spaced apart by a predetermined distance, and the endless belt is below the endless belt, and the upper surface is between the belts. And a gas discharge means for discharging gas into the gas flow path, and by sucking the gas from the gas discharge means into the gas flow path, the suction force is applied to the opening on the upper surface of the gas flow path. And a label sticking device that transports the label issued from the label issuing unit while adsorbing and holding the label to the belt surface through the opening. The bottom surface of the product which passes a label issued from a label issuing unit provided below the product conveying means to a label attaching position provided in the middle of the conveying direction of the product conveying means by the label transfer means and passes through the label attaching position In a label sticking device for sticking a label to
The label transfer means is wound around two rollers spaced apart from each other by a predetermined distance and is driven to rotate, an endless belt which is rotatable, a vent hole provided in the endless belt, and the belt below the endless belt. A gas flow passage having an upper surface corresponding to the belt along the longitudinal direction of the belt and gas discharge means for discharging gas into the gas flow passage, and gas is discharged from the gas discharge means into the gas flow passage. Thus, a label sticking apparatus is characterized in that a suction force is generated at the opening on the upper surface of the gas flow passage, and the label issued from the label issuing unit is transported while being adsorbed and held on the belt surface through the opening. 3. The label sticking device according to claim 1, wherein the opening on the upper surface of the gas flow passage is a slit along the longitudinal direction of the belt. 3. The label sticking device according to claim 1, wherein the opening on the upper surface of the gas flow passage is formed by forming small holes in a row in the longitudinal direction of the belt. The label according to any one of claims 1 to 4, wherein an injection means for injecting a gas toward an upper surface of the label adsorbed and held by the label transfer means is disposed above the label transfer means. Pasting device. The label sticking device according to any one of claims 1 to 5, wherein the gas discharge means discharges gas during rotation of the endless belt. The opening has a first portion corresponding to the downstream side of the discharge port of the gas discharge means and a second portion corresponding to the upstream side of the discharge port. The label sticking device according to any one of 6.

Images