JPH08183521A - Labeling machine - Google Patents

Abstract

PURPOSE: To closely stick a label without being constrained in label attaching position and area by providing a pair of transfer belts which hold both left and right sides of a work and carry the same through the labeling location and a labeling means which feeds and attaches a roll type label in association with the work being transferred. CONSTITUTION: In attaching a label 11 to the upper surface 2a of a plate type work 2, by a pair of left and right transfer belts 5 and 6, both the left and right side faces of the work 2 are held therebetween and carried to a predetermined attaching location. A labeling means 13 provided at the attaching location is projected confronting the upper surface 2a of the work 2 and feeds a label 11 from its roll upon each transfer of the work 2 for attachment thereto. A support stand 14 is provided at the attaching location and is moved up upon projection of the labeling means 13 to hold the work 2 and the label 11 into close contact. After completion of the label attachment, the support stand 14 is move down, the labeling means 13 is moved back and the work 2 is transferred by the transfer belts 5 and 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can be applied to the upper surface of a work such as a lid of a foamed resin box used for transporting fresh foods, etc. The present invention relates to a label sticking machine for sticking a label for displaying such as.

[0002]

2. Description of the Related Art In order to transport fresh foods such as vegetables and fish, foamed resin boxes such as expanded polystyrene, which are lightweight and have good heat retention, have been conventionally used. A plate-like lid is used for the box body, and a label indicating a producer name, quantity, etc. may be attached to the lid.

As a typical prior art label sticking machine for sticking such a label, Japanese Utility Model Publication No. 6-24332 can be cited. In this conventional technique, a pair of upper and lower conveyor belts is configured to pass a predetermined pasting position on a work. However, in such a structure,
The label cannot be attached to both ends of the lid in the direction perpendicular to the conveying direction, that is, the region sandwiched by the conveying belt, and the attaching position and the attaching area are restricted.

In another prior art label sticking machine for solving such a problem, the restriction of the sticking position and the sticking area is solved by disposing the conveyor belt on both sides of the lid so as to face each other. It is configured.

[0005]

In the above-mentioned prior art,
If the clamping pressure is set sufficiently so that the lid will be smoothly conveyed without slipping on the conveyor belt, the lid will bend and the roller for pressing the label against the lid and the lid will There is a problem that the label does not adhere completely and the label easily peels off.

Further, the box body and the lid are formed, for example, on the inner peripheral side of the side wall of the box body so as not to be displaced from each other. Corresponding to this, the lid has an outer peripheral edge portion. It is formed as a ridge, so that the vicinity of the center is formed as a thin recess. Therefore, even in such a case, when the label is pressed against the lid that has been conveyed while sandwiching the left and right side surfaces on the flat plate, the center portion of the lid bends, and there is a problem that the label cannot be adhered. .

An object of the present invention is to bring a label into close contact with a plate-like work, particularly a work formed in a concave portion having a thin plate thickness in the vicinity of the center thereof, without being restricted by a label sticking position and a sticking area. It is to provide a label sticking machine which can do.

[0008]

According to a first aspect of the present invention, there is provided a labeling machine for labeling a top surface of a plate-like work, which holds both left and right side surfaces of the work and passes through a predetermined sticking position. And a pair of left and right conveying belts that are conveyed so as to face each other, and at the pasting position, the conveying belt is configured to be projectable and retractable so as to face the upper surface of the workpiece that is conveyed while being sandwiched by the conveying belt, and is wound in a roll shape. It is characterized in that it includes a sticking means for feeding the label along with the conveyance of the work and sticking it on the upper surface, and a support base that rises at the sticking position in synchronization with the sticking means when the sticking means projects. .

In the label sticking machine according to the invention of claim 2,
The work is formed in a recess having a thin plate thickness near the center,
The support base supports the recess.

[0010]

According to the first aspect of the present invention, when the label is attached to the upper surface of the plate-like work, the work is conveyed to a predetermined attaching position by sandwiching the left and right side surfaces by the pair of left and right conveying belts, and the attaching is performed. The sticking means provided at the position projects toward the upper surface of the work, that is, descends, and the label wound in a roll shape is fed out as the work is conveyed and stuck to the upper surface. Further, a support base is provided at the pasting position so as to face the pasting means, and the support stand is raised when the pasting means is projected, that is, when the pasting is performed, and the work and the label are pinched together with the pressing roller of the pasting means. Intimately stick both to each other. When the label sticking is completed, the supporting table is lowered, the sticking means is moved backward, that is, the sticking means is raised, and the work is again carried out by the carrying belt.

Therefore, even if the work is pinched from both left and right sides so that the label sticking position and the sticking area are not restricted, the work is pinched from the upper and lower sides so that the work is not bent when the label is stuck. The label can be attached firmly to the work piece.

Further, according to the invention of claim 2, the work is preferably carried out when the vicinity of the center of the work is formed into a recess having a thin plate thickness, and the support base is raised in synchronization with the attaching means. In some cases, the recess is supported from the back surface to support the pressing force of the sticking means.

Therefore, the central concave portion, which is thinner than the outer peripheral edge portion, is not bent, and the label can be surely adhered and stuck to the surface of the concave portion.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a label sticking machine 1 according to an embodiment of the present invention.
2 is a left side view showing a simplified overall configuration of FIG. 2, and FIG. 2 is a front view of the label sticking machine 1. This label sticking machine 1 is provided with a pair of left and right conveyor belts 5, 6 on left and right side walls 3, 4 of a work 2 such as a box lid made of expanded polystyrene.
And pinch each of them to transport them to the upper surface 2a of the work 2,
For example, a label 11 indicating the place of production or quantity of fresh food or the like stored in the box is attached. Therefore, at a predetermined sticking position 12 in the conveying path constituted by the conveying belts 5 and 6, a sticking means 13 and a support base 14 described later are arranged to face each other with respect to the work 2.

The base 21 has a support column 22 standing upright on the front side and a support wall 23 standing upright on the rear side. A beam 24 is bridged between the support column 22 and the support wall 23, and a beam 25 is erected from the support wall 23. From each of the beams 24 and 25, a pair of guide shafts 26 and 27,
The drive shaft 28 is provided upright. The guide shafts 26, 27
Has an elevating member 29 which can be slidably displaced on the guide shafts 26 and 27.

The elevating member 29 has a guide rail 32 extending in a front-back direction 31 which is perpendicular to the conveying direction 30 of the work 2.
Has been laid. On the guide rail 32, a bracket 33 attached to the base 111 of the attaching means 13 is mounted. The base 111 also comes close to the support wall 23 by rotating the handle 34.
It is configured so that it can be displaced apart. Therefore, by rotating the handle 34, the base 111 slides on the guide rail 32 in the direction of the arrow 31, and thus the work 2
It is possible to attach the label 11 to a desired position in the arrow 31 direction.

An external thread is engraved on the drive shaft 28, and an internal thread engraved on the elevating member 29 meshes with the external thread. When the handle 35 is rotated, the drive shaft 28 is rotationally driven via a power transmission means (not shown). Therefore, when the handle 35 is rotated, the elevating member 29, that is, the base 111 is displaced up and down. In this way, the attaching means 13 can be held at the height corresponding to the plate thickness of the work 2.

Furthermore, a pair of front and rear pressing rollers 36, 37 facing the upper surface 2a of the work 2 are provided on the upstream side of the pasting position 12 in the conveying direction 30. The pressing rollers 36 and 37 are rotatably supported by a holder 38, and the holder 38 is supported by guide beams 39 and 40 to be vertically movable by a beam 41 standing on the support wall 23. . A drive shaft 42 is also fixed to the holder 38. When the handle 43 attached to the beam 24 is rotated, the drive shaft 42 has its rotational force driven via a power transmission mechanism (not shown). Given to axis 44,
Further, the driving force is given to the expansion / contraction mechanism 46 from the power transmission mechanism constituted by the bevel gear 45 and the like, whereby the expansion / contraction is driven, and thus the pressing rollers 36, 37 are held at the height corresponding to the plate thickness of the work 2. .

An operating portion 51 is also attached to the beam 25. This operation unit 51 is a power lamp 5 that lights up when the power switch in the control panel 52 is turned on.
3, an operation lamp 54 that lights up when the operation switch is turned on, a remaining amount warning lamp 55 that lights up when the remaining amount of the label 11 on the sticking means 13 decreases, an emergency stop switch 56, and a voice notification when an abnormality occurs. Buzzer 5
7, a timer 58 for setting the label sticking timing, a counter 59 for counting the number of sticking ends, and the like.

As will be described later, the conveyor belts 5 and 6 are driven in synchronization with each other by a motor, that is, at a constant speed, and the front end of the work 2 sandwiched between the conveyor belts 5 and 6 is limited. After contacting the switch 60 to bring the limit switch 60 into conduction, the attaching means 13
Is activated by the timer 58. Therefore, the timer is set at a time corresponding to the transport speed of the transport belts 5 and 6, the distance L1 from the front end of the work 2 to the sticking start position of the label 11, and the distance from the limit switch 60 to the sticking position 12. By setting the time limit time of 58, the label 11 can be attached at a desired position in the transport direction 30 of the work 2.

FIG. 3 is a plan view on the base 15 for explaining the carrying mechanism of the present invention in detail. With reference to FIGS. 1 to 3, a pedestal 61 is erected at the center of the base 15 so as to extend in the transport direction 30. On this stand 61,
A support member 62 formed by vertically arranging a pair of support plates 64 and 65 on a substrate 63 is attached. A large number of shaft holes are arranged in each of the support plates 64 and 65 in parallel with the carrying direction 30, and a rotary shaft 67 protruding from a roller 66 is inserted into the shaft holes. In this way, each roller 66
The support members 6 are arranged on the base 21 in the carrying direction 30.
It is rotatably supported by 2.

Of the rollers 66, the sticking position 1
The five rollers 66a facing 2 are rotatably supported by the support base 14. That is, as shown in FIG. 4, the support base 14 has the rotation shaft 6 of the roller 66a.
7a is supported, and the plate-shaped part 14c in which these support plates 14a and 14b are erected is comprised. An operating shaft 15a of an elevating means 15 realized by an air cylinder or the like is fixed to the plate-shaped portion 14c. The work 2 has a recess 7 near its center where the plate pressure is thinner than that of the side walls 3 and 4. The upper portion of the side wall of the box body is closely fitted into the groove 2d between the peripheral wall 2c of the recess 7 and the side walls 3 and 4. Corresponding to such a shape of the work 2, the elevating means 15 is
In response to the sticking operation of the sticking means 13 as will be described later, the operating shaft 15a extends and presses the roller 66a against the back surface 2b of the recess 7 of the work 2 to support the work 2.

The conveyor belt 5 is wound around rollers 72 and 73 which are rotatably supported on a moving base 71. Between these rollers 72 and 73, rollers 74 to press the conveyor belt 5 against the side wall 3 of the work 2 are also provided.
77 is rotatably supported by the moving base 71. Furthermore, between the rollers 72 and 73, tension adjusting rollers 78 to 80 are attached to the moving base 71 via moving pieces 81 to 83, respectively. Each of the moving pieces 81 to 83 moves on the moving table 71 by the arrow 31.
The conveyor belt 5 is mounted so that it can slide and move in any direction.
Is fixed at the position where the desired tension is achieved.

The drive side roller 72 has a rotary shaft 72.
A pulley 84 is fixed to a, and a pulley 87 fixed to an output shaft 86a of a motor 86 attached to the moving base 71 via a bracket 85 is fixed to the pulley 84.
A belt 88 is wound between the belt 88 and. Thus the motor 8
The conveyor belt 5 is driven to travel by 6.
A similar structure is provided on the movable table 89 for the conveyor belt 6, and the corresponding structures are designated by the same reference numerals.

Brackets 91, 92; 93, 94 are attached to the movable bases 71, 89, respectively, and the brackets 91, 93 are mounted on the base 21 with the brackets 95a, 95a.
The guide shaft 95c erected by the 95b is slidably displaced, and the brackets 92, 94 are slidably displaceable on the guide shaft 96c erected on the base 21 by the brackets 96a, 96b. Has been done.

Further, guide pieces 97 and 98 are fixed to the movable bases 71 and 89, respectively. Brackets 99a and 98a are attached to inner screws engraved on the guide pieces 97 and 98, respectively.
An outer screw engraved on the outer peripheral surface of a drive shaft 99c, which is erected on the base 21 by 99b and is rotatably supported, meshes with the drive shaft 99c. A handle 100 is fixed to the bracket 99b side of the drive shaft 99c.
The drive shaft 99c is rotated by rotating. The bracket 99a side and the 99b side of the drive shaft 99c are
Also, the guide pieces 97 and 98 are formed in opposite threads to each other. Therefore, when the handle 100 is rotated, the movable bases 71 and 89 are displaced toward or away from each other.

FIG. 5 is an exploded perspective view for explaining the structure of the sticking means 13, and FIGS. 6 and 7 are the sticking means 1 thereof.
3 is a front view for explaining the operation of FIG. The sticking means 13 generally pulls out the label 11 from guide rolls 102 to 105 from a label roll 101 configured by winding the label 11 in a roll shape, and presses the work 2 with the pressing rollers 106 and 107. Upper surface 2a
It will be pasted on.

The label roll 101 is loaded on a turntable 113 which is rotatably supported on a base 111 by a shaft 112. In addition, the guide roller 10
2, 103 are rotatably supported on the base 111 by pins 114, 115, respectively. Furthermore, the pressing rollers 106 and 107 respectively have pins 11
6, 117 are rotatably attached to the swing levers 121, 122. The rocking lever 121 is also provided with the guide rollers 104 and 105, respectively.
It is rotatably attached by 25.

In the label 11, the guide rollers 102, 103, 1 for guiding the inner surface coated with the adhesive.
No. 05 has its outer peripheral surface roughened to reduce the contact area of the label 11 with the surfaces of the rollers 102, 103, 105 and prevent wrapping. The pressing rollers 106 and 107 are made of a material having elasticity such as urethane.

The swing levers 121 and 122 are swingably supported by pins 126 and 127 provided upright on the base 111, respectively. A latching pin 129 is erected on the end of the swing lever 121 opposite to the side on which the pin 116 is erected. The latching pin 129 and the latching erected on the base 111 are erected. An air cylinder 131 is suspended between the pin 130 and the pin 130. Therefore, as the air cylinder 131 retracts, as shown in FIG.
The swing lever 121 swings and displaces in the direction of the arrow 132, whereby the pressing roller 106 projects, that is, descends, toward the upper surface 2a of the work 2. On the other hand, when the air cylinder 131 expands, the swing lever 121 swings and displaces in the direction of the arrow 133, as shown in FIG. 7, whereby the pressing roller 106 retracts, that is, rises, and the upper surface of the work 2. Separate from 2a.

On the base 111, the pressing roller 1
Immediately after the downstream side of the transport direction 30 of 06, the cutter blade 13
4 are arranged. This cutter blade 134 is screw 1
Support member 13 fixed to base 111 by 35
6 is attached by a screw 137. Therefore, the cutter blade 134 is separated from the label 11 in the state where the pressing roller 106 is projected as shown in FIG. 6 and is in the state where the pressing roller 106 is retracted as shown in FIG. The label 11 is cut into contact with the label 11. At this time, the cut end of the label 11 is sandwiched between the guide roller 105 and the pressing roller 106. The pressing roller 106 is formed to have a large diameter of, for example, 50 mm, that is, to have a small curvature, and the end portion of the label 11 cut by this is along the roller 106. Therefore, when the pressing roller 106 is pressed against the upper surface 2a again, the label 11
Is attached to the upper surface 2a, and the label 11 is supplied from the label roll 101.

The pressing roller 107 of the swing lever 122
At the end opposite to the side where the
A is bent and formed, and a locking pin 122b is provided upright. Corresponding to this, a rising piece 137 is formed on the base 111 by cutting and raising. Two screw holes 137a and 137b are formed in the rising piece 137, and a screw 138 is screwed into one screw hole 137a while being prevented from coming off by a nut 139. Further, the screw 140 is screwed into the other screw hole 137b so as not to come off by the nut 141. A locking hole is formed at the tip of the screw 140. The locking hole and the locking pin 1 are
A tension spring 142 is stretched between 22b and 22b.

Therefore, the oscillating lever 122 has the arrow mark 14 so that the pressing roller 107 projects toward the upper surface 2a.
It will be biased in three directions. Further, the bias force can be adjusted by the amount of protrusion of the screw 140 from the rising piece 137. Therefore, the pressing roller 107 is pressed against the upper surface 2a by the elastic force of the tension spring 142,
The label 11 can be brought into close contact with the upper surface 2a. On the other hand, when the work 2 is not loaded, the rocking lever 122 is driven by the elastic force of the tension spring 142.
Is further rockingly displaced in the direction of the arrow 143, and the contact piece 12
2a is held in contact with the head 138a of the screw 138.

Between the guide rollers 102 and 103, a sensor 151 for reading the marker written on the lower end of the label 11 is provided. This sensor 151
Are the projections 15 facing the label 11 and facing each other.
When the marker interrupts the optical path formed between the pair of light emitting / receiving elements embedded in 1a and 151b, it is detected that the supply of the label 11 for one sheet is completed, and the timer 48 When the time limit has elapsed, the pressing roller 106 that has been projected is retracted.

This sensor 151 has an elongated hole 152 formed in the base 111, as shown in FIG. 6 or 7, for example.
The mounting piece 15 of the sensor 151 that can be displaced above
A nut 154 is screwed onto a bolt 153 that connects the 1c and the elongated hole 152, and is fixed at a desired position. In this way, it becomes possible to absorb the deviation of the position where the marker is formed and to accurately supply only one label 11.

Further, in relation to the turntable 113, there is provided a detection lever 162 which is swingably supported by a shaft 161 provided upright on the base 111. The detection lever 162 is formed in a substantially U shape, and an abutting piece 163 that abuts the outer peripheral surface of the label roll 101 is erected from one end 162a, and the other end 162b is engaged. A stop pin 164 is provided upright. In response to this,
A locking pin 165 is provided upright on the base 111, and a tension spring 166 is stretched between the locking pin 164 and the locking pin 164.

Therefore, the detection lever 162 is elastically biased in the direction of the arrow 167 by the elastic force of the tension spring 166, and when the remaining amount of the label 11 becomes small, the state shown in FIG. Swing-displace to the state shown. Base 11
Also, the other end 162b of the detection lever 162 is provided on
7, a limit switch 168 is attached so that when the remaining amount of the label 11 becomes small, the other end portion 162b causes the limit switch 168 to move.
The operating piece 168a is pressed. As a result, the remaining amount warning lamp 55 is turned on, and the worker is informed of the label roll 101.
Notify that it is time to replace.

In the label sticking machine 1 constructed as described above, the side walls 3, 4 of the work 2 are the conveyor belts 5, 6.
Although the label 11 is sandwiched by and conveyed to the sticking position 12, the label 11 is stuck, but at the time of sticking, the support base 14 is raised in response to the lowering of the pressing roller 106 of the sticking means 13, and the back surface 2b of the recess 7 of the work 2 is stuck. Support. Therefore, even if the side walls 3 and 4 having a small sticking position and sticking area of the label 11 on the work 2 are sandwiched, the work 2 can be surely stuck to the label 11 without sticking during sticking. Done. In addition, the shape of the work 2 in which the concave portion 7 having a thin plate thickness is formed in the center as compared with the side walls 3 and 4 of the work 2 as the roller 66a rises in response to the lowering of the pressing roller 106 of the sticking means 13 during sticking. Even in this case, the upper surface 2a of the concave portion 7 can be surely brought into close contact with the label 11 for sticking.

Incidentally, the rollers 66 in the above-mentioned embodiment,
The outer diameter and the arrangement pitch of the 66a may be arbitrarily selected according to the shape of the work 2, or the rollers 66, 6 may be selected.
Instead of 6a, a smooth guide surface may be used.

[0041]

The label sticking machine according to the invention of claim 1 is
As described above, the plate-shaped work is sandwiched and transported on both left and right sides so as not to be restricted by the label sticking position and the sticking area. At the same time as the protrusion, the support stand rises in synchronization with this.

Therefore, the work and the label can be sandwiched between the sticking means and the supporting base without sticking the work, and the two can be firmly stuck and stuck together.

Further, in the label sticking machine according to the invention of claim 2, as described above, the work is formed in the concave portion having a thin plate thickness in the vicinity of the center thereof, and the support base is correspondingly raised as described above. Sometimes the back surface of the recess is supported.

Therefore, even if the recessed portion having a small plate thickness is pressed by the pressing roller of the sticking means to be bent, the back surface of the recessed portion is supported by the support table arranged so as to face the sticking means. It will stick to the label without bending. Therefore, the label can be surely brought into close contact with the work even when the work has such a shape that is bent when pressed to apply the label.

[Brief description of drawings]

FIG. 1 is a left side view showing a simplified overall configuration of a label sticking machine according to an embodiment of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a plan view on a base for explaining a transport mechanism according to the present invention.

FIG. 4 is a perspective view for explaining a support base of a roller and a lifting means for the support base according to the present invention.

FIG. 5 is an exploded perspective view for explaining the structure of a sticking unit that sticks a label to a work.

FIG. 6 is a front view for explaining the operation of the sticking means at the time of sticking.

FIG. 7 is a front view for explaining an operation of the pasting device at the time of finishing the pasting.

[Explanation of symbols]

 1 Labeling Machine 2 Work 2a Top 2b Back 3 Sidewall 4 Sidewall 5 Conveyor Belt 6 Conveyor Belt 7 Recess 11 Label 12 Labeling Position 13 Labeling Means 14 Supporting Stand 15 Elevating Means 21 Base 36 Pressing Roller 37 Pressing Roller 41 Operating Unit 60 Limit Switch 101 Label roll 102 Guide roller 103 Guide roller 104 Guide roller 105 Guide roller 106 Push roller 107 Push roller 111 Base 121 Swiveling lever 122 Swiveling lever 134 Cutter blade 151 Sensor 162 Detection lever 168 Limit switch

Continuation of the front page (72) Inventor Antaka Kitawaki 13-43 Besshohonmachi, Takatsuki City, Osaka Prefecture

Claims (2)

[Claims] 1. A label sticking machine for the upper surface of a plate-like work, comprising a pair of left and right carrying belts for holding the left and right side surfaces of the work so as to pass through a predetermined sticking position, and at the sticking position. The label, which is configured to project and retreat so as to face the upper surface of the work being sandwiched and conveyed by the conveyor belt, and which is wound in a roll shape, is fed out along with the conveyance of the work and attached to the upper surface. A label sticking machine comprising: a sticking means and a support base that rises at the sticking position in synchronization with the sticking means when the sticking means projects. 2. The label sticking machine according to claim 1, wherein the work is formed in a recess having a thin plate thickness in the vicinity of the center thereof, and the support base supports the recess.