JP6262501B2 - Label printer - Google Patents

Description

  The present invention relates to a label printer that issues labels.

  As types of label printers that issue labels on which product information or the like is printed, a type using a label roll with a mount and a type using a mountless label roll are known.

  The label roll with a mount is formed by winding a strip-shaped mount on which a plurality of labels are attached so as to be peeled at predetermined intervals. A label printer of the type using a label roll with a backing paper is issued by peeling off the label from the backing paper, and the backing paper portion from which the label has been peeled off is taken up by the backing paper take-up portion.

  In this type of label printer, the label roll is supported by the support shaft by being externally fitted to the support shaft. Further, the label roll supported in this manner is sandwiched from both sides in the axial direction by a pair of guide plates, for example, so that it is positioned in the axial direction and the collapse of the winding state is suppressed. Since the guide plate contacts only the mount portion and does not contact the label with respect to the end surface of the label roll, the label paste does not adhere to the guide plate.

  On the other hand, the mountless label roll is obtained by winding only a continuous strip-shaped label around a core without using a mount. A label printer of the type using a mountless label roll cuts the leading end portion of the label continuous body with a cutter and issues the cut portion as a label. Therefore, the mount which becomes a discarded item can be omitted, and thereby resource saving can be achieved.

  However, since the end surface of the mountless label roll is formed by the width direction edge of the continuous label body, if the mountless label roll is positioned in the axial direction by using the guide plate as described above, the label continuous to the guide plate. There is a problem that the glue of the body adheres. If glue adheres to the guide plate, the adhesion between the guide plate and the label continuum may adversely affect the feeding of the label continuum.

  In order to solve this problem, Patent Document 1 discloses a technique in which the guide plate rotates integrally with the label roll when the label continuous body is drawn out by holding the guide plate rotatably. It is disclosed. According to this technique, it can suppress that rotation of a label roll is inhibited by a guide plate.

  Patent Document 2 discloses a technique that uses a pair of rotation guide bodies that can rotate around an axis perpendicular to the rotation axis of the label roll, instead of the pair of guide plates described above. According to this technique, the outer peripheral surface of the rotation guide body is only in linear contact with the end surface of the label roll at one place in the circumferential direction, and the rotation guide body also rotates in accordance with the rotation of the label roll. Adhesion between the end surface of the label roll and the rotation guide body is suppressed, and thereby it is possible to suppress the rotation of the label roll from being inhibited.

JP 2000-211177 A JP 2013-159461 A

  However, even if the technique of Patent Document 1 is adopted, the glue of the label continuum adheres to the guide plate, and therefore the glue is difficult to adhere to frequently clean the guide plate or reduce the frequency of cleaning. It is necessary to apply a special surface treatment (hereinafter referred to as “non-stick coating”) to the guide plate. Further, in the technique of Patent Document 1, if the outer diameter of the label roll becomes smaller than the outer diameter of the guide plate due to the progress of label consumption, the label continuum immediately after being fed out from the label roll is rubbed against the guide plate. In addition, there is a problem that the feeding of the label continuum is adversely affected.

  In addition, even when the technique of Patent Document 2 is adopted, since the paste of the label continuous body adheres to the outer peripheral surface of the rotating guide body, the rotating guide body is frequently cleaned or the non-adhesive coating is applied to the outer peripheral surface of the rotating guide body. It is necessary to give.

  Then, this invention makes it a subject to provide the label printer which can prevent the glue of a label continuous body adhering to the guide part pressed on the end surface of a mount-less label roll.

The label printer according to the present invention is
A holding unit for holding a label roll having a strip-shaped label continuous body having a paste surface and a cylindrical core around which the label continuous body is wound;
A label printer and a printing unit for printing on continuous label strip portions fed from the label roll held on the holding portion,
The holding part is
A support shaft that supports the label roll by being inserted inside the core, and has an outer diameter smaller than the inner diameter of the core ;
A guide portion having an upper edge portion as a contact portion pressed against an end face of the label roll supported by the support shaft;
A support for supporting the guide part,
The entire guide portion is disposed radially inside the outer periphery of the core and the contact portion is disposed radially outside the inner periphery of the core with respect to the label roll supported by the support shaft. The guide portion is supported by the support body ,
A protective part is provided for preventing the end face of the core from contacting a corner part between a pressing surface including the contact part facing the label roll in the guide part and a side surface of the guide part,
The protection part is provided continuously to the side of the pressing surface of the guide part, and extends to a radial position outside the outer periphery of the core so as to move away from the end face of the label roll toward the tip. and said that you are.

  According to the label printer of the present invention, the contact portion of the guide portion pressed against the end surface of the label roll overlaps the region from the inner periphery to the outer periphery of the end surface of the core of the label roll when viewed from the axial direction, It is arranged so as not to overlap the label continuous part of the roll. Therefore, when the contact portion of the guide portion is pressed against the end face of the label roll, the contact portion does not contact the label continuous body portion but contacts only the core portion. Therefore, it is possible to prevent the adhesive of the label continuum from adhering to the guide part, thereby frequently cleaning the guide part, applying a non-adhesive coating to the guide part, and the winding core from the end face of the label continuum. There is no need to use a special label roll configured to protrude in the axial direction.

  In addition, according to the present invention, it is possible to avoid various problems that may occur when glue adheres to the guide portion as in the prior art. For example, according to the present invention, the adhesion between the end surface of the label roll and the guide portion is prevented, thereby inhibiting the rotation of the label roll from being inhibited by the guide portion. Thereby, since a label continuum is satisfactorily drawn out from the label roll, it is possible to effectively suppress printing defects and printing defects. Further, since no glue is deposited on the surface of the guide part, it is possible to prevent the glue mass from being transferred from the guide part to the label continuous body and being conveyed downstream in the supply direction of the label continuous body.

In the label printer according to the present invention, prior SL contact portion is preferably provided above the said support shaft.

  In this case, since the outer diameter of the support shaft is smaller than the inner diameter of the core of the label roll, the upper portion of the core supported from below by the support shaft is the lower portion of the core suspended below the support shaft. It is hard to displace compared to. Therefore, the contact part of the guide part arrange | positioned above a support shaft can be accurately pressed against the end surface of the upper part of a core which is hard to displace as mentioned above. Therefore, it is possible to more reliably prevent contact of the guide portion with the label continuous body portion of the label roll, and consequently adhesion of glue to the guide portion.

  In the label printer according to the present invention, the holding portion may include a pair of support shafts extending in parallel in a substantially horizontal direction, and both of the support shafts are located inside the core. You may arrange | position with the space | interval which may be settled.

  In this case, the label roll can be stably supported by the two support shafts inserted inside the winding core. In addition, since the support of the label roll is stable, the contact portion of the guide portion can be accurately pressed against the end surface of the core, and thereby adhesion of glue to the guide portion can be more reliably prevented.

  In the label printer according to the present invention, the guide portion is a plate-like member disposed so as to extend vertically through the pair of support shafts and along a plane substantially perpendicular to the pair of support shafts. The contact portion may be configured by an upper edge portion of the guide portion.

  In this case, by pressing the upper edge of the plate-shaped guide portion arranged along a plane substantially perpendicular to the support shaft against the end surface of the core, the label roll can be positioned securely in the axial direction and the label continuous It is possible to reliably prevent body glue from adhering to the guide portion.

In the label printer according to the present invention, since the protective portion is continuously provided on the side of the guide portion, the side edge corner portion of the guide portion is prevented from being rubbed against the end surface of the core of the rotating label roll. This makes it possible to protect the winding core.

  According to the present invention, the guide part for positioning the end face of the mountless label roll does not contact the label continuous part of the label roll, but only the core part. It can prevent adhesion.

It is a front view which shows the label sticking apparatus provided with the label printer which concerns on one Embodiment of this invention. It is sectional drawing which looked at the internal structure of the label printer shown in FIG. 1 from the front. It is a perspective view which shows the holder of the label printer shown in FIG. It is a top view of the holder shown in FIG. It is a side view of the holder shown in FIG. It is an AA line expanded sectional view of FIG. FIG. 5 is an enlarged sectional view taken along line BB in FIG. 4. It is the figure which looked at one guide part of the holder shown in FIG. 3 from the pressing surface side.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

[Overall configuration of labeling device]
FIG. 1 shows a label applicator 1 equipped with a label printer 8 according to this embodiment. In addition to the label printer 8, the label sticking device 1 includes a conveyor 4 that transports the product G, and a label sticker 10 that sticks a label issued by the label printer 8 on the upper surface of the product G transported by the conveyor 4. , An operation display unit 12 for performing a predetermined input operation and a predetermined display, and a rack 2 for supporting the above components. A lower pasting mechanism (not shown) for pasting a label on the lower surface of the product G may be further provided below the conveyor 4.

[Conveyor]
The conveyor 4 is disposed so as to move the product G along a conveyance direction (D direction in the drawing) from the left to the right as viewed from the front side of the label sticking device 1. Although the conveyor 4 is comprised with an endless belt, for example, in this invention, the specific structure of the conveyor 4 is not specifically limited.

  A commodity passage sensor 110 is disposed in the vicinity of the conveyor 4. The commodity passage sensor 110 detects whether or not the commodity G on the conveyor 4 has passed through a predetermined position on the upstream side in the transport direction (D direction in the drawing) from the label attaching position by the label sticking machine 10. Although the kind of goods passage sensor 110 is not limited, For example, the optical goods passage sensor 110 which has a light emission part and a light-receiving part is used.

[Labeling machine]
The label applicator 10 is disposed above the conveyor 4. The label sticking machine 10 has a suction block 11 for sucking the label issued by the label printer 8 on the lower surface, and a sticking arm (see FIG. (Not shown). However, in the present invention, the configuration of the label sticking machine 10 is not particularly limited as long as it has a function of receiving a label issued by the label printer 8 and sticking it to the upper surface of the product G.

[Operation display section]
The operation display unit 12 includes a display panel 13 and a stroke key unit 14. The display panel 13 is constituted by a touch panel, for example. However, the display panel 13 is not necessarily a touch panel. When the display panel 13 is a touch panel, the operation display unit 12 does not necessarily have the stroke key unit 14.

[Label printer]
The label printer 8 is disposed above the conveyor 4. Further, the label printer 8 is disposed adjacent to the upstream side of the label applicator 10 in the transport direction (D direction in the figure).

  As shown in FIG. 2, a so-called mountless label roll LR is used for the label printer 8. The label roll LR includes a cylindrical core 20 and a wound body 22 formed by winding a strip-shaped label continuous body LC around the core 20.

  In the label roll LR used in the label printer 8 according to this embodiment, the inner diameter of the core 20 is, for example, 76 mm, and the outer diameter of the core 20 is, for example, not less than 82 mm and not more than 84 mm. The thickness of the core 20 is 3 mm or more and 4 mm or less, for example. The axial width of the winding core 20 is substantially equal to the width in the short direction of the label continuum LC. Therefore, on both sides in the axial direction, the end face of the core 20 and the end face of the wound body 22 are aligned on substantially the same plane. The core 20 is made of paper, for example, but the material of the core 20 is not particularly limited.

  The label continuum LC has a glue surface that is an adhesive surface with the product G and a non-glue surface that is a printing surface. The printing surface of the label continuum LC is composed of a coloring layer that develops color when heat is applied. The wound body 22 is formed by winding the label continuous body LC in a roll shape so that the adhesive surface faces inward. Regarding the short direction of the label continuum LC, there are label rolls LR having various widths, and a label roll LR having an appropriate width is used according to the user's selection.

  The label printer 8 includes a holder (holding unit) 30 that holds the label roll LR, and a plurality of guide rollers 99a, 99b, and 99c that guide the label continuous body LC portion fed out from the label roll LR held by the holder 30. The printing unit 91 that prints on the printing surface of the label continuum LC, the printing roller 92 that sandwiches the label continuum LC together with the printing unit 91, and the label continuum LC toward the label issuing port W in cooperation with the printing roller 92 And an assist roller 93 that feeds in, a cutting means 95 that cuts the label continuum LC, and a housing 120 that houses various components of the label printer 8.

  In the following description, the direction in which the label continuum LC is fed from the label roll LR toward the label issuing port W is referred to as “label supply direction” (F direction in the figure).

  The label roll LR held by the holder 30 is arranged in such a posture that one end face in the axial direction faces the front face of the label printer 8 and the other end face faces the back face of the label printer 8. The configuration of the holder 30 will be described later.

  The printing unit 91 is a thermal head that includes a plurality of minute heating elements that are heated according to the printing data. By contacting the heated heating element with the printing surface of the label continuum LC, the thermal printing method is performed. Perform printing.

  The surface of the printing roller 92 is made of a rubber material. The printing roller 92 is a driving roller that is rotationally driven by a printing roller motor 96. For the printing roller motor 96, for example, a stepping motor is used.

  The printing roller 92 is disposed so as to sandwich the label continuous body LC together with the printing unit 91. Thereby, the printing roller 92 can move the label continuous body LC in the label supply direction (F direction in the figure) by rotating the printing roller 92 while pressing the printing surface of the label continuous body LC against the printing unit 91. . The printing roller 92 is disposed below the printing unit 91. Therefore, the label continuum LC is sent out to the label issuing port W in a posture in which the printing surface is the upper surface.

  The printing roller 92 can rotate in both forward and reverse directions. The “forward direction” here refers to the rotational direction in which the label continuous body LC is fed in the label supply direction (F direction in the figure), and the “reverse direction” refers to the direction opposite to the label supply direction. Indicates the direction of rotation.

  The surface of the assist roller 93 is made of a rubber material. The assist roller 93 is a drive roller that is rotationally driven by an assist roller motor 97. As the assist roller motor 97, for example, a stepping motor is used.

  The assist roller 93 is disposed upstream of the print roller 92 in the label supply direction (F direction in the figure). The assist roller 93 is disposed so as to sandwich the label continuous body LC together with the opposed driven roller 94. As with the printing roller 92, the assist roller 93 can rotate in both forward and reverse directions.

  When the print roller 92 and the assist roller 93 are rotationally driven in the forward direction, the label continuum LC is fed in the label supply direction (F direction in the figure), and the print roller 92 and the assist roller 93 are rotationally driven in the reverse direction. Thus, the label continuum LC is back-feeded in the direction opposite to the label supply direction (F direction in the figure).

  Between the assist roller 93 and the printing roller 92, the label continuum LC is guided by a guide roller 99c so as to be detoured downward. A label sensor 100 is disposed between the assist roller 93 and the print roller 92. The label sensor 100 is a sensor that detects whether or not a continuous label body LC exists between the assist roller 93 and the print roller 92. For the label sensor 100, for example, an optical sensor including a light emitting unit and a light receiving unit is used. In this case, the slack of the label continuum LC is detected based on the output value of the label sensor 100 using the fact that the output value of the label sensor 100 changes according to the distance between the label sensor 100 and the label continuum LC. Is possible.

  The cutting means 95 includes a movable cutter 95a and a fixed cutter 95b. The movable cutter 95a is disposed with the blade facing downward. The movable cutter 95a is driven to slide up and down by a cutter motor 98. The fixed cutter 95b is fixed to the housing 120 with the blade facing upward.

  When the cutting means 95 is not operating (standby state), the blade of the movable cutter 95a is disposed above the blade of the fixed cutter 95b. When the leading end of the label continuum LC is fed out of the housing 120 through the label issuing port W, and the cut portion of the label continuum LC is aligned with the blade of the fixed cutter 95b and the blade of the movable cutter 95a, it is movable. The cutter 95a is driven to slide downward. Thereby, the label continuous body LC is sandwiched and cut by the blade of the fixed cutter 95b and the blade of the movable cutter 95a from above and below. In this way, the label continuous body LC is cut by the cutting means 95, whereby the label cut from the label continuous body LC is issued from the label issuing port W.

  The label continuum LC is cut by the cutting means 95 at an arbitrary position in the length direction according to the length setting of the issued label. Specifically, the cutting position by the cutting means 95 is adjusted with respect to the timing at which the label continuum LC is supplied, so that the position to be cut in the label continuum LC is adjusted. The label length is adjusted.

[holder]
Hereinafter, the configuration of the holder 30 will be described with reference to FIGS.

  As shown in FIGS. 3 to 5, the holder 30 is inserted into the core 20 of the label roll LR so as to support the label roll LR and a pair of support shafts 31 a and 31 b. A positioning mechanism 40 that positions the supported label roll LR in the axial direction and a housing (support) 60 that supports the positioning mechanism 40 are provided.

  The pair of support shafts 31a and 31b are arranged so as to extend in parallel to each other in a substantially horizontal direction from the back side to the front side of the printer 8. Hereinafter, the axial direction of the support shafts 31a and 31b is referred to as the axial direction Y (see FIGS. 3 to 7), and the horizontal direction perpendicular to the support shafts 31a and 31b is the lateral direction X (see FIGS. 3, 4, 6, and 8). That's it.

  As shown in FIG. 3, each of the support shafts 31 a and 31 b includes a fixed shaft portion 32 and an outer cylinder portion 33 that is rotatably fitted to the outside of the fixed shaft portion 32. As the material of the fixed shaft portion 32, for example, a metal such as stainless steel is used. For example, a resin such as polyacetal is used as the material of the outer cylindrical portion 33.

  One end of the fixed shaft portion 32 of each of the support shafts 31a and 31b is fixed to the back surface portion 120a of the housing 120 of the label printer 8 by, for example, a bolt. Accordingly, the support shafts 31a and 31b are supported in a cantilever manner by the back surface portion 120a. A connecting plate 38 is fixed to the other end of each fixed shaft portion 32 by, for example, a bolt. As a result, the free ends of the pair of support shafts 31 a and 31 b are fixed via the connecting plate 38. In FIG. 3, in order to facilitate understanding of the structure of the holder 30, the connection plate 38 is illustrated by a virtual line (two-dot chain line).

  In each of the support shafts 31a and 31b, the outer cylindrical portion 33 is divided into two in the axial direction Y. However, instead of the two outer cylindrical portions 33 divided in this way, one outer cylindrical portion 33 having a length corresponding to the two outer cylindrical portions 33 may be used. In a state where the label roll LR is held by the holder 30, the outer periphery of the outer cylindrical portion 33 abuts on the inner periphery of the core 20 of the label roll LR (see FIG. 8). Thereby, the label roll LR is stably supported by the pair of support shafts 31 a and 31 b from the inside of the core 20.

  The shape of the housing 60 is, for example, a substantially rectangular parallelepiped elongated in the axial direction Y. A pair of flange portions 64a and 64b extending outward in the lateral direction X are provided at the end portion on the rear side in the axial direction Y of the housing 60. In these flange portions 64a and 64b, for example, bolts are attached to the rear portion 120a of the housing 120. It is fixed. Thereby, the housing | casing 60 is supported in the cantilever shape by the back surface part 120a. A pair of flange portions 66 a and 66 b that extend outward in the lateral direction X are also provided at the end of the housing 60 on the front side in the axial direction Y. The connecting plate 38 is fixed to the flange portions 66a and 66b by, for example, bolts, whereby the free end of the housing 60 is connected to the free ends of the pair of support shafts 31a and 31b via the connecting plate 38. It is fixed.

  As shown in FIG. 7, the holder 30 includes a reinforcing shaft 68 parallel to the support shafts 31a and 31b. For the material of the reinforcing shaft 68, for example, a metal such as stainless steel is used. The reinforcing shaft 68 penetrates the housing 60 in the axial direction Y. One end of the reinforcing shaft 68 is fixed to the back surface portion 120a of the housing 120 by, for example, a bolt, and the other end of the reinforcing shaft 68 is fixed to the connecting plate 38 by, for example, a bolt. By providing the reinforcing shaft 68 in this way, the rigidity of the holder 30 is enhanced.

  As shown in FIGS. 3 to 7, the positioning mechanism 40 includes a first guide plate 42 that positions the front end face of the label roll LR, and a second guide plate 52 that positions the rear end face of the label roll LR. It has.

  The first guide plate 42 includes a base portion 45 disposed substantially along a horizontal plane, a first side surface portion 46 (see FIG. 5) extending downward from one end portion in the lateral direction X of the base portion 45, and the base portion 45. A second side surface portion 47 (see FIG. 3) extending downward from the other end portion in the lateral direction X and a guide portion 43 that rises from an end portion of the base portion 45 on the front side in the axial direction Y, for example.

  The base portion 45 is disposed to face the upper surface of the housing 60, the first side surface portion 46 is disposed to face one side surface of the housing 60, and the second side surface portion 47 is opposed to the other side surface of the housing 60. Is arranged.

  As shown in FIG. 5, the lower end portion of the first side surface portion 46 extends to the back side in the axial direction Y, and the overall shape of the first side surface portion 46 is L-shaped. The first side surface portion 46 is, for example, an L-shaped first slide member 78 (see FIG. 6) accommodated in the housing 60 via a plurality of pins 80 and 81 provided at intervals in the axial direction Y. It is connected to. The pins 80 and 81 are inserted into elongated holes 62a provided on the side surface of the housing 60 so as to extend in the axial direction Y. Similarly, the second side surface portion 47 shown in FIG. 3 is also connected to a second slide member (not shown) accommodated in the housing 60 via the pin 82, and the pin 82 is connected in the axial direction Y. It is inserted through a long hole 62d provided in the side surface of the housing 60 so as to extend in the direction. As described above, the first guide plate 42 is supported by the housing 60 via the pins 80, 81, and 82 at the first side surface portion 46 and the second side surface portion 47.

  The pins 80 and 81 shown in FIG. 5 are slidable along the long hole 62 a of the housing 60. By guiding the pins 80 and 81 along the elongated hole 62a, the first side surface portion 46 and the first slide member 78 connected via the pins 80 and 81 can both slide in the axial direction Y. It has become. Similarly, when the pin 82 shown in FIG. 3 is guided along the elongated hole 62d of the housing 60, the second side surface portion 47 and the second slide member (not shown) connected via the pin 82 are used. Are both slidable in the axial direction Y. With the above configuration, the first guide plate 42 is slidable in the axial direction Y.

  As shown in FIGS. 5 and 6, below the housing 60, there is provided a knob 49 for picking when the first guide plate 42 is slid in the axial direction Y. As shown in FIG. 6, the knob 49 includes a shaft portion 49 a that protrudes upward, and the shaft portion 49 a is inserted into a long hole 62 e provided in the bottom surface of the housing 60 so as to extend in the axial direction Y. Has been. Thus, the knob 49 is guided in the axial direction Y by the elongated hole 62e. The shaft portion 49a is fixed to the first slide member 78 in the housing 60 by welding, for example. Accordingly, the first slide member 78 and the first guide plate 42 connected thereto are slid along the axial direction Y by sliding the knob 49 in the axial direction Y along the lower surface of the housing 60. Can be made.

  As shown in FIG. 3, the guide part 43 is comprised, for example by the rectangular plate part. The guide portion 43 is disposed along a plane substantially perpendicular to the pair of support shafts 31a and 31b so as to extend in the vertical direction through between the pair of support shafts 31a and 31b. The back surface of the guide portion 43 constitutes a pressing surface 43a that is pressed against the front end surface of the label roll LR supported by the support shafts 31a and 31b. The upper edge portion of the pressing surface 43a constitutes a contact portion 88 (see FIG. 8) described later.

  A pair of protective portions 44 a and 44 b are provided on the upper end portion of the guide portion 43 so as to be connected to the side. Each of the protection portions 44a and 44b extends from the side surfaces 43b and 43c of the guide portion 43 in a direction inclined toward the front side in the lateral direction X outward. As described above, the protection portions 44a and 44b are provided so as to move away from the surface on which the pressing surface 43a is disposed toward the tip, and the entire protection portions 44a and 44b are located on the front side of the pressing surface 43a. Is arranged. Therefore, in a state where the pressing surface 43a is pressed against the end surface of the label roll LR, the protection portions 44a and 44b do not contact the label roll LR.

  Similar to the first guide plate 42, the second guide plate 52 includes a base portion 55 disposed substantially along a horizontal plane, and a first side surface portion 56 (see FIG. 5) extending downward from one end portion in the lateral direction X of the base portion 55. Reference), a second side surface portion 57 (see FIG. 3) extending downward from the other end in the lateral direction X of the base portion 55, and a guide portion 53 rising from an end portion of the base portion 55 on the back side in the axial direction Y, for example. It has.

  The base portion 55 is disposed to face the upper surface of the housing 60. The base portion 55 is disposed at substantially the same height as the base portion 45 of the first guide plate 42, and is disposed on the rear side in the axial direction Y from the base portion 45. The first side surface portion 56 is disposed to face one side surface of the housing 60, and the second side surface portion 57 is disposed to face the other side surface of the housing 60.

  As shown in FIG. 3, the lower end portion of the second side surface portion 57 extends to the front side in the axial direction Y, and extends to the back side in the axial direction Y by a shorter distance than the front side. ing. The second side surface portion 57 is, for example, an L-shaped third slide member 79 (see FIG. 6) accommodated in the housing 60 via a plurality of pins 83 and 84 provided at intervals in the axial direction Y. It is connected to. The pins 83 and 84 are inserted through elongated holes 62b provided on the side surface of the housing 60 so as to extend in the axial direction Y. Similarly, the first side surface portion 56 shown in FIG. 5 is also connected to a fourth slide member (not shown) accommodated in the housing 60 via a pin 85, and the pin 85 is connected in the axial direction Y. So as to extend in a long hole 62c provided on the side surface of the housing 60. As described above, the second guide plate 52 is supported by the housing 60 via the pins 83, 84, and 85 at the first side surface portion 56 and the second side surface portion 57.

  The pins 83 and 84 shown in FIG. 3 are slidable along the long hole 62 b of the housing 60. By guiding the pins 83 and 84 along the elongated hole 62b, the second side surface portion 57 and the third slide member 79 connected via the pins 83 and 84 can both slide in the axial direction Y. It has become. Similarly, when the pin 85 shown in FIG. 5 is guided along the elongated hole 62 c of the housing 60, the first side surface portion 56 and the fourth slide member (not shown) connected via the pin 85. Are both slidable in the axial direction Y. With the above configuration, the second guide plate 52 is slidable in the axial direction Y.

  As shown in FIGS. 3 and 6, on the side of the housing 60, there is provided a knob 59 for picking when the second guide plate 52 is slid in the axial direction Y. As shown in FIG. 6, the knob portion 59 includes a shaft portion 59a protruding in the lateral direction X, and the shaft portion 59a is inserted through the elongated hole 62b. Thereby, the knob | pick part 59 is guided to the axial direction Y by the long hole 62b. The shaft portion 59a is fixed to the third slide member 79 in the housing 60 by welding, for example. Therefore, the third slide member 79 and the second guide plate 52 connected thereto are slid along the axial direction Y by sliding the knob 59 along the side surface of the housing 60 in the axial direction Y. Can be made.

  As shown in FIG. 3, the guide part 53 is configured by, for example, a rectangular plate part, like the guide part 43 of the first guide plate 42, and extends vertically between the pair of support shafts 31a and 31b. And disposed along a plane substantially perpendicular to the pair of support shafts 31a and 31b. The guide portion 53 is disposed on the rear side in the axial direction Y with respect to the guide portion 43 of the first guide plate 42, and is disposed to face the guide portion 43. The front surface of the guide portion 53 constitutes a pressing surface 53a that is pressed against the end surface on the back side of the label roll LR supported by the support shafts 31a and 31b.

  The guide portion 43 of the first guide plate 42 and the guide portion 53 of the second guide plate 52 have substantially the same shape and substantially the same size. Further, the pair of guide portions 43 and 53 are completely aligned as viewed from the axial direction Y. Accordingly, the upper edges of the pair of guide portions 43 and 53 are arranged at substantially the same height in the vertical direction, and the side edges of the pair of guide portions 43 and 53 are arranged at substantially the same position at both ends in the lateral direction X. Has been.

  A pair of protective portions 54 a and 54 b are provided on the upper end portion of the guide portion 53 so as to be connected to the side. Each of the protection portions 54a and 54b extends from the side surfaces 53b and 53c of the guide portion 53 in a direction inclined toward the back side toward the outer side in the lateral direction X. As described above, the protective portions 54a and 54b are provided so as to move away from the surface on which the pressing surface 53a is disposed toward the tip, and the entire protective portions 54a and 54b are located on the back side of the pressing surface 53a. Is arranged. Therefore, in a state where the pressing surface 53a is pressed against the end surface of the label roll LR, the protection portions 54a and 54b do not contact the label roll LR.

  The second guide plate 52 is further provided with an upper extension 58 that extends above the guide 53. The upper extension 58 extends in a direction inclined from the upper end of the guide portion 53 upward to the back side. As described above, the upper extension portion 58 is provided so as to move away from the surface on which the pressing surface 53a is disposed toward the tip, and the entire upper extension portion 58 is disposed on the back side of the pressing surface 53a. ing. Therefore, in a state where the pressing surface 53a is pressed against the end surface of the label roll LR, the upper extension 58 does not contact the label roll LR.

  When setting the label roll LR in the holder 30, the label roll LR is inserted from the front side to the back side of the label printer 8 while passing the holder 30 inside the core 20. At this time, it is necessary to store the label roll LR between the pair of guide portions 43 and 53 in the axial direction Y. In order to achieve this purpose, the label roll LR may be inserted so that the front end portion of the label roll LR gets over the front guide portion 43. At this time, the end part on the back side of the label roll LR may get over the guide part 53 on the back side. In this case, the label roll LR that has passed over the guide portion 53 comes into contact with the upper extension portion 58 at the inner peripheral side corner portion of the end surface of the core 20, so that the rear side end portion of the label roll LR makes the second guide plate 52 It is possible to prevent getting over completely. Further, in a state where the core 20 is in contact with the upper extension portion 58, the label roll LR is guided obliquely downward toward the front side along the inclined surface of the upper extension portion 58. Thereby, the label roll LR can be easily stored between the pair of guide portions 43 and 53.

  As shown in FIGS. 6 and 7, the positioning mechanism 40 includes a centering mechanism 70 for always positioning the central portion in the axial direction Y of the label roll LR at a predetermined position regardless of the axial Y dimension of the label roll LR. Yes. The centering mechanism 70 is accommodated in the housing 60. The centering mechanism 70 includes a pair of racks 72 and 74 extending in the axial direction Y, and a pinion 76 that meshes with the racks 72 and 74. The pinion 76 is fixed to the housing 60 so as to be rotatable around an axis 77 along the vertical direction.

  When the pinion 76 rotates in the clockwise direction in FIG. 6, one rack 72 slides toward the rear side in the axial direction Y, and the other rack 74 slides toward the front side in the axial direction Y by the same distance. Conversely, when the pinion 76 rotates counterclockwise in FIG. 6, one rack 72 slides toward the front side in the axial direction Y, and the other rack 74 slides toward the rear side in the axial direction Y by an equal distance. That is, when one of the pair of racks 72 and 74 slides in the axial direction Y, the other rack 72 and 74 are coupled to each other so that the other slides in the opposite direction of the axial direction Y by the same distance.

  One rack 72 is fixed to the first slide member 78, and the other rack 74 is fixed to the third slide member 79. That is, one rack 72 is connected to the first guide plate 42 via the first slide member 78, and the other rack 72 is connected to the second guide plate 52 via the third slide member 79. Yes.

  When the first guide plate 42 slides to the front side or the back side in the axial direction Y by the centering mechanism 70 described above, the second guide plate 52 slides to the opposite side of the axial direction Y by an equal distance. Therefore, in a state where the label roll LR is set between the guide portion 43 of the first guide plate 42 and the guide portion 53 of the second guide plate 52, the guide portions 43, 53 of the one guide plate 42, 52 are connected to the label roll. By sliding in the axial direction Y toward the end surface of the LR, both guide plates 42 and 52 slide so that the pair of guide portions 43 and 53 approach each other. By performing this sliding operation until the guide portions 43 and 53 are pressed against both end faces of the label roll LR, the central portion of the label roll LR in the axial direction Y can be positioned at a predetermined position.

  FIG. 8 is a view of the guide portion 43 and its peripheral portion of the positioning mechanism 40 as viewed from the pressing surface 43a side.

  Hereinafter, the contact portion 88 formed on the pressing surface 43a of the guide portion 43 and the configuration related thereto will be described with reference to FIG. Here, the contact portion 88 formed on one guide portion 43 will be described, but a similar contact portion is also formed on the pressing surface 53 a of the other guide portion 53.

  The pressing surface 43a contacts the end surface of the label roll LR supported by the support shafts 31a and 31b at the contact portion 88. Further, due to the support state of the guide plates 42 and 52 by the housing 60 described above, the contact portion 88 contacts only the end surface of the core 20 with respect to the end surface of the label roll LR, and contacts the label continuum LC portion. Arranged not to. Further, the region other than the contact portion 88 on the pressing surface 43a is also arranged so as not to contact the label continuum LC portion of the label roll LR. Specifically, the entire guide portion 43 is disposed radially inside the outer periphery 20 b of the core 20, and the contact portion 88 is disposed radially outside the inner periphery 20 a of the core 20. Thereby, seeing from the axial direction Y, the contact part 88 overlaps the area | region from the inner periphery 20a to the outer periphery 20b in the end surface of the core 20, and the label continuous body LC part (winding body shown in FIG. 2) of the label roll LR. 22 portions) are arranged so as not to overlap.

  Thus, in this embodiment, when the label roll LR is positioned by the positioning mechanism 40, the contact portion 88 does not contact the label continuum LC portion on the end surface of the label continuum LC, but contacts only the core 20 portion. Therefore, it is possible to prevent the glue of the label continuous body LC from adhering to the guide portion 43. Further, as described above, since the protective portions 44a and 44b connected to the guide portion 43 do not contact the end surface of the label roll LR, the paste of the label continuous body LC does not adhere to the protective portions 44a and 44b. Accordingly, the special label is configured such that the guide plate 42 is frequently cleaned, a non-adhesive coating is applied to the surface of the guide plate 42, and the core 20 protrudes in the axial direction from the end face of the label continuous body LR. There is no need to use rolls.

  Moreover, the contact part 88 is formed in the upper edge part of the pressing surface 43a, and is arrange | positioned above the support shafts 31a and 31b. Thereby, the contact part 88 is arrange | positioned so that the upper end vicinity part in the end surface of the core 20 may be contacted. The vicinity of the upper end of the core 20 is a portion supported from below by the pair of support shafts 31a and 31b, and is less likely to be displaced than a portion suspended below the support shafts 31a and 31b. Therefore, the contact portion 88 can be accurately pressed against the end surface of the upper part of the core 20 which is difficult to be displaced in this way, and as a result, the contact of the pressing surface 43a against the label continuous body LC portion of the label roll LR, and consequently Adhesive adhesion to the pressing surface 43a can be prevented more reliably.

  The shape, size, and arrangement of the pressing surface 43a that can realize the arrangement of the contact portion 88 as described above are the same as the inner diameter R1 and outer diameter R2 of the core 20 and the outer diameter and arrangement of the support shafts 31a and 31b. Will be decided accordingly.

  The inner diameter R1 and the outer diameter R2 of the winding core 20 are fixed values determined by the size of the label roll LR used in the label printer 8.

  In order to allow the support shafts 31 a and 31 b to be inserted inside the core 20, the outer diameters of the support shafts 31 a and 31 b need to be smaller than the inner diameter R <b> 1 of the core 20. In the present embodiment, in order to avoid interference between the two support shafts 31 a and 31 b inside the core 20, the outer diameters of the support shafts 31 a and 31 b are less than half of the inner diameter R1 of the core 20. It needs to be. Further, the pair of support shafts 31a and 31b preferably have the same outer diameter, and the shaft centers of the pair of support shafts 31a and 31b are preferably disposed at substantially the same height. Thereby, a pair of support shaft 31a, 31b can contact the inner periphery 20a of the core 20 in substantially the same height, and can support the label roll LR stably from an inner peripheral side in these pair of contact parts. .

  With respect to the lateral direction X, the pair of support shafts 31 a and 31 b are arranged at an interval such that both of the support shafts are accommodated inside the core 20. That is, the distance S1 between the outer end of one support shaft 31a and the outer end of the other support shaft 31b in the lateral direction X is smaller than the inner diameter R1 of the core 20. An interval S2 between the pair of support shafts 31a and 31b is determined to be an interval at which the guide portion 43 can be disposed between the support shafts 31a and 31b. Under such conditions, the distance S between the axes of the pair of support shafts 31a and 31b is determined.

  The position of the axis P of the core 20 is determined according to the outer diameter and arrangement of the support shafts 31a and 31b thus determined.

  The shape, size, and arrangement of the pressing surface 43a are such that the distance Q from the axis P of the core 20 to the upper corner portions 43i, 43j of the pressing surface 43a is the radius (R1 / 2) of the inner periphery 20a of the core 20. ) And less than or equal to the radius (R2 / 2) of the outer periphery 20b. Thereby, the contact part 88 which contacts the end surface of the core 20 without protruding to the radial direction outer side of the core 20 can be formed in the upper edge part of the pressing surface 43a.

  Based on the distance Q thus determined, the width Q1 of the pressing surface 43a in the lateral direction X and the distance Q2 from the axis P to the upper end 43h of the pressing surface 43a are determined. In order to avoid interference between the guide portion 43 and the support shafts 31a and 31b, the width Q1 is determined to be smaller than the interval S2 between the support shafts 31a and 31b. The distance Q2 from the axis P of the core 20 to the upper end 43h of the pressing surface 43a is preferably larger than the radius (R1 / 2) of the inner periphery 20a of the core 20. Thereby, since the upper end of the pressing surface 43a is arranged above the upper end 20c of the inner periphery 20a of the core 20, the portion of the end surface of the core 20 that includes the upper end 20c of the inner periphery 20a The contact part 88 can be contacted.

  As described above, according to the present embodiment, the contact portion 88 that contacts only the end surface of the core 20 is formed with respect to the label roll LR, so that it is ensured that glue adheres to the guide plates 42 and 52. Can be prevented. Therefore, various problems that may occur when glue adheres to the guide portion as in the past can be avoided. For example, the adhesion between the end surface of the label roll LR and the guide portions 43 and 53 is prevented, so that the rotation of the label roll LR is inhibited from being inhibited by the guide portions 43 and 53. Thereby, since the label continuous body LC is satisfactorily drawn out from the label roll LR, it is possible to effectively suppress the printing failure in the printing unit 91 and the printing failure at the label issuing port W (see FIG. 2). In addition, since glue does not accumulate on the pressing surfaces 43a and 53a of the guide portions 43 and 53, a lump of glue is transferred from the pressing surfaces 43a and 53a to the label continuum LC and downstream in the supply direction of the label continuum LC. It can be prevented from being conveyed.

  As shown in FIG. 8, according to the present embodiment, the end surface of the winding core 20 has a boundary portion 43d between the pressing surface 43a and the protection portions 44a and 44b with respect to the side edge portion of the pressing surface 43a. , 43e. Therefore, it can prevent that the end surface of the core 20 contacts the side edge corner parts 43f and 43g of the pressing surface 43a and the side surfaces 43b and 43c in the guide part 43. FIG. Accordingly, it is possible to prevent the side edge corner portions 43f and 43g of the guide portion 43 from being rubbed against the end surface of the core 20 of the rotating label roll LR, thereby protecting the core 20.

  While the present invention has been described with reference to the above-described embodiments, the present invention is not limited to the above-described embodiments.

  For example, in the above-described embodiment, an upper label printer that issues a label that is attached to an object to be attached from the upper side has been described. However, the present invention issues a label that is attached to an object to be attached from the lower side. The present invention can also be applied to a label printer for underlaying. The present invention is not limited to a label printer mounted on a label sticking apparatus, but can be equally applied to a label printer mounted on an apparatus other than the label sticking apparatus, or a label printer used alone.

  In the above-described embodiment, the case where the label roll LR is supported by the two support shafts 31a and 31b has been described. However, in the present invention, the number of support shafts may be one or three or more.

DESCRIPTION OF SYMBOLS 1: Label sticking apparatus 2: Rack 4: Conveyor 8: Label printer 10: Label sticking machine 11: Suction block 12: Operation display part 20: Core 20a: Inner circumference of core 20b: Outer circumference of core 22: Winding Body 30: Holder (holding part)
31a, 31b: Support shaft 32: Fixed shaft portion 33: Outer tube portion 38: Connection plate 40: Positioning mechanism 42: First guide plate 43: Guide portions 44a, 44b: Protection portion 52: Second guide plate 53: Guide portion 54a, 54b: Protection part 58: Upper extension part 60: Housing (support)
70: Centering mechanism 91: Printing portion 92: Printing roller 93: Assist roller 95: Cutting means 120: Housing 120a: Rear portion of housing D: Product conveyance direction F: Label supply direction G: Product (attachment)
LC: Label continuum LR: Label roll P: Core axis W: Label issuing port X: Horizontal direction Y: Axial direction

Claims (6)

A holding unit for holding a label roll having a strip-shaped label continuous body having a paste surface and a cylindrical core around which the label continuous body is wound;
A label printer and a printing unit for printing on continuous label strip portions fed from the label roll held on the holding portion,
The holding part is
A support shaft that supports the label roll by being inserted inside the core, and has an outer diameter smaller than the inner diameter of the core ;
A guide portion having an upper edge portion as a contact portion pressed against an end face of the label roll supported by the support shaft;
A support for supporting the guide part,
The entire guide portion is disposed radially inside the outer periphery of the core and the contact portion is disposed radially outside the inner periphery of the core with respect to the label roll supported by the support shaft. The guide portion is supported by the support body ,
A protective part is provided for preventing the end face of the core from contacting a corner part between a pressing surface including the contact part facing the label roll in the guide part and a side surface of the guide part,
The protection part is provided continuously to the side of the pressing surface of the guide part, and extends to a radial position outside the outer periphery of the core so as to move away from the end face of the label roll toward the tip. label printer, characterized in that there. Before SL contact portion, the label printer according to claim 1, characterized in that provided above the said support shaft. The holding portion includes a pair of support shafts extending in a substantially horizontal direction,
The core has a thickness of 3 mm or more,
The width of the pressing surface in the horizontal direction perpendicular to the support shaft is smaller than the interval between the pair of support shafts,
3. The label according to claim 2, wherein a distance from an axis of the core to an outermost portion at an upper edge of the pressing surface in a radial direction of the core is larger than 38 mm and smaller than 42 mm. Printer. The holding portion includes a pair of support shafts extending in parallel in a substantially horizontal direction,
The label printer according to any one of claims 1 to 3, wherein the pair of support shafts are arranged so as to be spaced from each other so that both of the support shafts are accommodated inside the core. . The guide portion, characterized in that it is constituted by a plate-shaped member disposed substantially along a plane perpendicular to and the pair of support shafts so as to extend in the vertical direction through between the pair of support shafts The label printer according to claim 4 . The said support body is supporting the knob | pick part which is pinched at the time of the slide operation of this guide part in the position different from the said guide part, The Claim 1 characterized by the above-mentioned. Label printer.

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