JP6507691B2 - Suction pad and sticking device provided with suction pad - Google Patents

Description

  The present invention relates to a suction pad used by a label sticking apparatus.

Conventionally, in supermarkets and the like, food products such as prepared foods have been put in trays made of plastic and the like, packaged by films and sold, and it has been carried out for packaging films of such products. There is known a sticking device for sticking a label on which information such as sales price is printed.
And in the sticking apparatus, in order to move the label issued by the label printer to the sticking position, a suction pad for holding the label by suction is used. (Patent Document 1)

JP-A-2014-61900

  In the suction pad as disclosed in the above-mentioned prior art documents, it is necessary to elastically deform in order to improve the adhesion at the time of suction, and the main body portion (middle A neck portion is formed in the part).

  However, for the suction pad, due to the elasticity and the presence of a constriction portion, the suction pad body is deformed by the suction force applied to the suction pad at the time of suction of the label, and the suction failure of the label may occur. there were.

  An object of the present invention is to provide an adsorption pad which can hold the label stably without the label adsorption surface being deformed even if the adsorption pad is deformed by the suction force in suctioning the label. .

In order to achieve the above object, an adsorption pad according to the present invention is a hollow adsorption pad for adsorbing a label, which has a cylindrical shape and a flexible portion having a groove portion on the outer periphery, and the flexible portion The inflexible portion having a shape extending downwardly and continuously extending downward, and the inflexible portion further expanding below the inflexible portion when the label is adsorbed A diameter of the annular rib having a skirt portion elastically deformed along a suction surface of the label, and an elastic annular rib having a lower end located above the lower end of the skirt portion inside the skirt portion; Is larger than the diameter of the flexible portion .
Moreover, the sticking apparatus of this invention is equipped with the adsorption | suction pad | pad of Claim 1 or Claim 2, and is characterized by sticking the adsorbed label on a sticking thing.

  It is possible to prevent deformation of the suction pad due to negative pressure due to suction at the time of label suction, and to stably hold the label by suction.

BRIEF DESCRIPTION OF THE DRAWINGS It is a general view of a packaging apparatus provided with the sticking apparatus provided with the suction pad which concerns on embodiment of this invention. It is a side view of a packing device for explaining a packing device provided with a sticking device provided with a suction pad concerning an embodiment of the present invention. It is a side view of a sticking device for explaining operation of a sticking device provided with a suction pad concerning an embodiment of the present invention. It is a top view of a sticking device for explaining operation of a sticking device provided with a suction pad concerning an embodiment of the present invention. It is a figure explaining the sticking part of the sticking apparatus provided with the suction pad which concerns on embodiment of this invention, (a) is a side view of the sticking part in a label adsorption state, (b) is a side view of the sticking part at the time of label sticking. It is. It is a figure for demonstrating the suction pad which concerns on embodiment of this invention, (a) is a perspective view, (b) is a top view, (c) is a side view, (d) is a bottom view, (e) is. FIG. It is a top view for demonstrating the sticking position control of the sticking apparatus provided with the suction pad which concerns on embodiment of this invention. It is a top view for explaining sticking direction control of a sticking device provided with a suction pad concerning an embodiment of the present invention. It is a figure for demonstrating drive control of the sticking apparatus provided with the adsorption | suction pad which concerns on embodiment of this invention. It is a figure for demonstrating the static elimination means employ | adopted as the adsorption | suction pad which concerns on embodiment of this invention, (a) is a side view of the sticking part provided with static elimination means, (b) is a sticking part provided with static elimination means. (A), (c) is a side view for demonstrating the state which protects the film which has packaged the tray by the static elimination means. It is a figure for demonstrating the label issuing part of the sticking apparatus which concerns on embodiment of this invention, (a) is a perspective view of a label issuing part, (b) is the front view. It is a figure for demonstrating the label issuing part of the sticking apparatus which concerns on embodiment of this invention, and is a disassembled perspective view of a label issuing part. It is a figure for demonstrating the structure of the adsorption | suction pad which concerns on embodiment of this invention, and an effect | action, (a) is sectional drawing of the adsorption | suction pad of embodiment of this invention, (b) is an adsorption | suction pad without an annular rib. FIG.

A sticking apparatus according to an embodiment of the present invention and a packaging apparatus provided with the sticking apparatus will be described with reference to the drawings.
-Configuration of packaging device provided with sticking device-
The sticking device according to the embodiment of the present invention is adopted, for example, in a film packaging device shown in FIG.
The film packaging apparatus A according to the embodiment of the present invention refers to a packaged material such as a plastic tray (hereinafter referred to as "tray T") containing goods such as food (hereinafter referred to as "film F"). And affixing affixing media (hereinafter referred to as “label L”) such as a label on which product information is printed on the packaged object (object to be packaged). .

  As shown in FIGS. 1 and 2, the film packaging apparatus A is disposed in front of the machine body a, and covers the film F with respect to the commodity placement portion b on which the operator places the tray T and the tray T. A film packaging means c for packaging, a conveyer d for transporting the tray T placed on the article placement part b to the film packaging means c, and a goods discharge part e for discharging the tray T packaged with the film F A discharge unit 4 for conveying the tray T to the product discharge unit e, and a sticking apparatus B for sticking the label L on the upper surface of the tray T discharged to the product discharge unit e; Thus, an input display means h such as a touch panel for inputting information for controlling the film packaging apparatus A or monitoring the state of the film packaging apparatus A is disposed.

Then, in the film packaging apparatus A, the operator inputs information such as the tray T by the input display means h and places the tray T on the product placement portion b, whereby the tray T is a film by the conveyer d After being transported to the packaging means c and packaged by the film packaging means c, the label L is attached to the upper surface of the film F for packaging the tray T by the attaching device B while being discharged to the product discharge portion e by the discharge means 4 .
The stretch film packaging apparatus shown in FIG. 1 and FIG. 2 is provided with a product placement portion b (including a measuring portion) for placing a package on the front of the machine body a, and the package is placed on the product placement portion b. An object (tray T) is conveyed by a conveyer d to an elevator (not shown) provided inside the body a.
A film wrapping means c (wrapping portion) is provided above the elevator, and a film roll placement portion (not shown) is provided on the side of the film wrapping means c (wrapping portion) and a film roll set in the placement portion A film holding means for holding the leading end of the film F to be fed out is provided, and the film holding means holds and pulls out the tip of the film held by the film holding means, and transports the film to the film wrapping means c (wrapper). Clamping means provided on the (wrapping unit) is disposed close to the tip of the film holding means.
In addition, a cutter is disposed between the film holding means and the clamping means for cutting the film F held and pulled out by the clamping means into a predetermined length.
Further, not shown are a left-right folding plate and a rear folding plate (not shown) above the clamping means provided on the film packaging means c (wrapping section), and a discharging means 4 (discharging pusher) positioned above the rear folding plate. It is arranged.
Therefore, the package (tray T) placed on the elevator is pushed up against the film F spread on the film wrapping means c (wrapping section) by the elevation of the elevator, and the end of the film in a stretched state The product is folded into the bottom of the package (tray T) by the left and right folding plates and the rear folding plate, and then the package (tray T) is discharged by the discharge means 4 (discharge pusher). While pushing horizontally toward the (heat seal portion), the front end of the film F is folded into the bottom of the package by the front folding roller to complete the film packaging. Then, the label L issued by the arm unit 2 and the sticking unit 3 of the sticking device B is stuck on the upper surface of the product during the pushing and transferring of the package by the discharging means 4 (discharge pusher). In addition, in the film packaging apparatus A of the present embodiment, the sticking device B which has adsorbed the label is lowered to the object to be stuck lower than the sticking device to stick the label, but the sticking direction is the lateral direction or It may be the upper side, and the sticking position to the material to be attached may be not only the upper surface of the material to be attached but also the side surface or the back surface.

-Configuration of sticking device-
The structure of the sticking apparatus B employ | adopted as the said film packaging apparatus A is demonstrated in detail.
(Whole configuration)
The sticking device B according to the embodiment of the present invention is, as shown in FIGS. 1 to 4, a main body portion 1 which is disposed movably in the left and right direction (arrow M1 in FIGS. 1 and 4) on the fuselage a of the film packaging device A. And the arm 2 supported rotatably in the lateral direction with respect to the main body 1 (arrow M2 in FIGS. 3 and 4), and movable up and down (arrow M3 in FIG. 3) relative to the arm 2 (Arrow M4 in FIGS. 3 and 4) Ejection such as sticking portion 3 supported freely and pusher for moving tray T packaged by film F to commodity ejection portion e which is a sticking position (arrow M5 in FIG. 3) It is comprised by the means 4, and drive control is carried out by the control means 50 mentioned later based on the information input by the input display means h.

(Configuration of sticking device body)
As shown in FIG. 3, the main body 1 of the sticking apparatus B supports the sheet support shaft 11 for supporting the sheet roll R formed by winding the label L sheet, and the strip-like sheet drawn out from the sheet roll R The printing apparatus 12 includes a printing unit 12 that prints information and the like, and a cutter unit 13 that cuts a sheet printed by the printing unit 12 to create a label L.
A label issue port 13a (FIG. 1) for issuing a label is provided on the front of the main unit 1, and a band-like sheet printed by the printing means 12 is held in a standby state in which it is discharged from the label issue port 13a. After being adsorbed and held by the suction pads 33 constituting the sticking section 3, the cutter means 13 cuts the label L to form a label L.
In the present embodiment, the label L will be described using a linerless label, but it is not particularly limited to a linerless label, and a label with a mount can also be used.

At the lower position of the label issue port 13a of the main unit 1, a label placement plate 142 (FIG. 14) is provided extending forward for holding a band-shaped sheet so as not to drop downward. Make sure to hold the label in 1.
As described above, the main body 1 of the sticking apparatus B is configured as a label issuing unit, and is configured as a label (sticking medium) holding unit that holds a label to be stuck on standby.

Therefore, when the main body 1 moves in the left-right direction on the fuselage a of the film packaging device A, the holding (standby) position of the label is moved in the left-right direction. The sticking part 3 supported will move to the left-right direction as a whole.
Arm part 2 is not limited to what is supported rotatably to main part 1 constituted as pasting medium holding means, for example, arm part 2 separates from main part 1 Supported and moved independently in the left-right direction, arm part 2 supported separately from body part 1 and moved in the left-right direction interlocked with body part 1, arm part 2 with body part 1 The arm unit 2 may be separately supported so that the arm unit 2 does not move in the left-right direction and can cover the movement range in the left-right direction of the main unit 1 by rotational movement.

(Structure of arm)
Two upper and lower brackets 15a and 15b are provided in front of the main body 1, and the arm 2 is supported rotatably in the left-right direction with respect to a first rotation shaft 15 formed by the brackets 15a and 15b. There is.
The arm unit 2 reciprocates between the label suction position P1 and the label application position P2 about the first rotation shaft 15. Then, the second rotation shaft 25 is provided at a position of a predetermined distance from the first rotation shaft 15, specifically at the tip end position of the arm portion 2, and at the position of the second rotation shaft 25 Is rotatably and vertically movable, and the sticking portion 3 can be rotated and vertically moved by the second rotation driving means 23 and the vertical driving means 22.

As shown in FIG. 3, the sticking rod 31 protrudes from the lower surface of the arm portion 2, and the sub arm portion 32 is fixed to the lower end thereof. A suction pad 33 is provided on the lower surface of the sub arm 32.
Further, as can be understood from FIG. 4, in the present embodiment, the distance from the first rotation shaft 15 to the second rotation shaft 25 in the arm portion 2 is greater than the distance from the second rotation shaft 25 to the suction pad 33. More specifically, the arc (rotatable range) drawn by the arm unit 2 centering on the first rotation axis 15 is larger than the arc drawn (rotatable range) drawn on the sticking part 3 centering on the second rotation shaft 25; The large arc movement of the arm unit 2 enables movement of the label L to the sticking position, and the small arc movement of the sticking unit 3 enables adjustment of the sticking angle of the label L.
The magnitude relation between the arc drawn by the arm unit 2 and the arc drawn by the sticking part 3 is not particularly limited to the above-mentioned magnitude relation, and even with arcs of similar size, the arc drawn by the sticking part 3 Also, the arc drawn by the arm unit 2 may be small.

(Configuration of sticking section)
As shown in FIG. 5, in the sub-arm unit 32 of the sticking unit 3, the upper block 321 and the lower block 322 which are substantially rectangular in plan view are connected by the shaft 323, and the lower block 322 with respect to the upper block 321. Is rotatably configured. The sticking rod 31 is fixed to one side of the upper surface of the upper block 321, and the suction pad 33 is fixed to the other side of the lower surface of the lower block 322 to which the sticking rod 31 is not fixed.
The lower block 322 is formed with an air passage 322a continuous to the suction path 33a of the suction pad 33, and the upper block 321 is an air passage 321a connected to the vacuum passage 6a from the pressure adjusting means 6 such as a vacuum pump. Is formed. The air passage 321a of the upper block 321 and the air passage 322a of the lower block 322 are communicated via a release valve 324 which is released as the lower block 322 pivots relative to the upper block 321.

  Therefore, when the label L is attached to the tray T packaged by the film F from the adsorption state in which the label is adsorbed and held as shown in FIG. 5A, the adsorption pad 33 is pressed upward by the reaction force of the attaching operation. . Here, since the suction pads 33 can be tilted (deformed) by being formed of a material having elasticity as a whole, etc., as shown in FIG. 33 itself tilts (deforms) by the same amount as the amount of rotation of the lower block 322, and rotates the lower block 322 about the shaft 323 while keeping the label surfaces being adsorbed parallel. Then, the release valve 324 is released, the pressure in the suction path 33a of the suction pad 33 is released to the atmospheric pressure, the suction force for the label L is lost, and the label L is smoothed against the film F on the upper surface of the tray T. Can be affixed to

(Suction pad configuration)
The suction pad 33 of the sticking section 3 is made of, for example, a material having elasticity such as synthetic rubber, and as shown in FIG. 6, has a substantially cylindrical shape as a whole, and a main body 331 which constitutes the upper part thereof Conical shaped suction portion 332 continuously extending downward of main body portion 331 and gradually spreading downward, continuous downward of suction portion 332 and spreading elasticity at a spread angle larger than the spread angle of the conical shape of suction portion 332 And an annular rib 334 provided on the inner periphery of the skirt portion 333 below the suction portion 332 and projecting annularly downward. The lower end of the rib is located about 0.5 mm above the lower end of the skirt portion 333.

An attachment portion 331a for fixing to the lower surface of the lower block 322 of the sub-arm portion 32 of the sticking portion 3 is formed in the upper portion of the main body portion 331, and the outer peripheral surface of the lower portion of the attachment portion 331a is thin A buffer portion 331 b is formed of a plurality of annular grooves which are cut in a hollow shape, and can tilt with respect to an external force applied to the suction pad 33. The buffer portion 331 b formed of a plurality of annular grooves is not limited to one formed by thinning the outer peripheral surface, and can be formed by, for example, a bellows. Furthermore, the number of annular grooves may be one.
In addition, if the suction pad 33 can be tilted and the suction surface at the time of label suction can be kept horizontal, the configuration is not particularly specified, such as providing an indirect portion or the like in the main body portion 331.

The surface of the suction portion 332 is flat without forming a thin portion, and the waist is formed stronger than the main portion 331. And since it has a conical shape which gradually spreads downward, the force to crush the suction pad 33 generated by the negative pressure in the suction passage 33a at the time of label suction is released slightly downward from the horizontal direction Because of this, the crushing of the suction pad 33 at the time of suction is suppressed.
The skirt portion 333 spreads at a large spread angle and has elasticity so that when the label L is adsorbed, it is deformed by elasticity to be in contact with the surface of the label L and enables stable adsorption of the label L. At the same time, the annular rib 334 disposed on the inner periphery of the skirt portion 333 abuts against the surface of the label L to be sucked, and the label L is not sucked more than necessary, and the label L is wrinkled or deformed To prevent.

(Drive control of sticking device)
In the sticking apparatus according to the embodiment of the present invention, each drive means is controlled by the control means 50 shown in FIG.
The horizontal direction drive means 16 is a drive means for adjusting the sticking position of the label L, and according to the command of the control means 50, according to the sticking position of the label L input and set by the input display means h, Change the position of the main unit 1 in the left-right direction.
Usually, in order to perform a predetermined number of packaging and sticking processes under the same conditions, they are driven at the time of the first sticking process, and are usually not driven until the conditions are changed.

The front-rear direction drive means 17 is a drive means for adjusting the application position of the label L, and according to the command of the control means 50, the discharge means 4 such as a pusher according to the application position of the label L set in the front-rear direction. To move the tray T to the product discharge unit e. In general, during the movement of the tray T to the product discharge unit e, the sticking unit 3 moves the tray T in accordance with the lowering timing of the sticking unit 3 in order to lower the label T onto the upper surface of the tray T and apply the label L. By controlling the timing, the sticking position in the front-rear direction is adjusted.
In addition, although shortening of sticking time is disadvantageous, depending on the goods accommodated in tray T, the height may be uneven and sticking in a fixed position may be difficult in sticking in movement of tray T. In such a case, it is also possible to adjust the sticking position of the label L in the front-rear direction by adjusting the final movement position of the tray T by the discharge means 4 such as a pusher.

  The first rotation drive means 21 is a drive means for rotating and reciprocating the arm unit 2 around the first rotation shaft 15 in order to apply the label at a position different from the issue position of the label L. The arm unit 2 rotates and reciprocates between the label suction position P1 and the label sticking position P2 by the driving of the first rotation driving means 21. The rotation angle up to the label sticking position P2 with respect to the label suction position P1 is constant regardless of the sticking position to the tray T, and the first rotation driving means 21 can be configured by a simple mechanism that repeats constant rotation reciprocating operation.

  Since the arm unit 2 moves from the label suction position P1 at the time of sticking processing by the first rotation driving means 21 and the sticking unit 3 is separated from the issue position of the label, the following is performed while sticking the label L: It is possible to issue a label L to be attached to the Further, by performing the movement to the pasting position by the rotational movement, it is not necessary to convert the rotational movement of the motor into a linear movement, and a stable movement is performed.

  The vertical drive means 22 is a means for vertically driving the sticking section 3 with respect to the arm section 2, and performs lifting and lowering operations of the sticking section 3 at the time of suctioning and sticking of the label.

The second rotation drive means 23 is a means for rotating the sticking unit 3 about the sticking rod 31, that is, the second rotation shaft 25 with respect to the arm unit 2 to change the direction in which the label is stuck.
Since the label L is moved by the rotational movement from the label suction position P1 to the label sticking position P2 by the arm unit 2, if the direction of the label L is not changed with respect to the arm unit 2, The label L attached by the rotational movement is rotated while changing its direction, and the end of the label L on the label issuing part side interferes with the mechanism around the label issue port 13a, and the adhesive surface of the label L is stuck There is a possibility of Therefore, in the sticking apparatus B of the present embodiment, the sticking section 3 is rotated according to the rotation of the arm section 2 so that the label L moves to the sticking position while maintaining the orientation of the label L with respect to the fuselage a. Drive control (draw-out control) is performed.
Then, after the label L is moved to the sticking position, the sticking direction of the label L can be freely changed according to the angle at which the sticking section 3 is rotated, and the desired position may be obtained according to the size of the tray T or the like. It is possible to apply the label L.

(Return control of sticking section)
The pressure control means 6, such as a vacuum pump, is controlled in conjunction with each drive means, and in the vacuum path 6a in which the pressure control means 6 and the suction pad 33 are connected continuously In order to detect the pressure rise in the vacuum path 6a due to the breakage of the reference numeral 33 or the like, a pressure sensor 51 for detecting the pressure in the vacuum path is disposed. The pressure in the vacuum path 6 a detected by the pressure sensor 51 is sent to the control means 50.

Further, as shown in FIG. 5, when the suction pad 33 applies the label L to the film F surface covering the tray T, the reaction force releases the release valve 324 provided in the vacuum path 6a and the air pressure in the vacuum path Changes from near vacuum to atmospheric pressure.
The pressure change at that time is detected by the pressure sensor 51 to detect the sticking of the label L.

  Then, when the pressure value detected by the pressure sensor 51 rises above the threshold value stored in advance, the control means 50 releases the inside of the vacuum path 6a from the vacuum state to the atmospheric pressure state, that is, the label L It is controlled that the up-and-down drive means 22 is changed from the lowering operation to the rising operation, judging that it is stuck on the film F surface.

(Home return operation)
In the sticking device, it is necessary to promptly perform the return operation to the origin position after label sticking together with the label sticking operation, for shortening the time of the entire sticking processing, and increasing the raising operation speed of the sticking section 3 It is necessary to shorten the time taken for the return, but if the rising speed is high, a large load is applied at the time of stop, and an error may occur in the stop at the correct origin height. The error of the origin position, that is, the error of the initial position with respect to the next suction operation is a major problem leading to suction error and sticking leakage in the suction operation of the label using the suction pad 33.

In the sticking apparatus according to the embodiment of the present invention, in the return operation for the origin return of the sticking unit 3, the deceleration control is adopted to enable quick and accurate return to the origin.
Specifically, as shown in FIG. 7, an origin stop sensor 52 for detecting that the upper end 31a of the sticking rod 31 of the sticking unit 3 is at the origin stop position and the upper end 31a of the sticking rod 31 A deceleration start sensor 53 is provided which detects that the vehicle is at a deceleration start position which is a position located a predetermined distance below the origin stop position.
The timing at which the deceleration start sensor 53 detects that the upper end of the sticking rod 31 has reached the deceleration start position a predetermined distance below the origin stop position is performed at a large rising speed and the returning operation of the sticking unit 3 from the sticking position is performed. The deceleration control of the vertical drive means 22 is performed to reduce the stop load at the home position stop position. Thereafter, when the origin stop sensor 52 detects that the upper end of the sticking rod 31 has reached the origin stop position, the driving of the vertical drive means 22 is stopped, whereby accurate return to the origin position can be performed.

(Adjustment of label application position)
With reference to FIG. 8, the operation | movement which adjusts the sticking position of the label stuck by the sticking apparatus B to the front and rear, right and left direction is demonstrated.

FIG. 8A shows a state in which the label L printed with “A” is attached at the center of the tray T without changing the direction of “A” (hereinafter referred to as “reference applied state”). The main body portion 1 is disposed on the left side of the machine body a by the left-right direction driving means 16 so that the arm portion 2 is located at a substantially central position in the left-right direction which is the sticking position of the label L. Then, the label L is attached to the central position of the tray T by controlling the timing of the back and forth movement of the tray T by the front and rear direction drive means 17 in accordance with the lowering timing of the attaching part 3 by the up and down drive means 22.
Since the direction of the label L at the time of sticking is set to be the same as the direction in which the label is issued, the second rotation is performed in accordance with the counterclockwise rotation operation (m1) of the arm unit 2 by the first rotation driving means 21. The direction of the label L is controlled to be always the same by rotating (m2) the sticking section 3 clockwise by the same angle by the driving means 23.

FIG. 8 (b) shows a state in which the same label L is attached to the right position of the tray T (that is, the attached position is changed in the left and right direction), and the attached position of the label L is the label applied in the reference attached state. The holding position is set at a position separated in the left and right direction. In such a case, the left and right position of the main body 1 is changed (m3) by the left and right direction driving means 16 so that the label holding (issuing) position itself approaches the label attaching position.
Therefore, the movement from the holding (issuing) position of the label to the sticking position in the sticking process of the label L is always the constant rotation operation (m1) of the arm unit 2 by the first rotation driving means regardless of the sticking position of the label L It is possible to carry out the efficient sticking processing at all times without changing the sticking processing time according to the sticking position of the label.

FIG. 8C shows a state where the label L is attached to the front position of the tray T (that is, the attachment position is changed in the front-rear direction).
When the sticking position of the label L is at the back position of the tray T than the sticking position in the reference sticking state, the back and forth movement of the tray T by the front and rear direction drive means 17 is controlled to adjust the back and forth of the sticking position m4). Specifically, when it is desired to attach the label L forward, the label L is moved backward by delaying the forward movement timing with respect to the lowering operation of the attaching part 3 by the vertical drive means 22 than the timing in the reference attaching state. When it is desired to stick on the front, the forward movement timing for the downward movement of the sticking section 3 by the vertical drive means 22 is made earlier than the timing in the reference sticking state.

The adjustment of the sticking position of the label L in the front-rear direction can also be performed by controlling the stop position of the tray.
As described above, with the drive control of the front-rear direction drive unit 17 and the left-right direction drive unit 16, the attachment position in the front-rear direction and the left-right direction with respect to the tray T can be adjusted.

(Adjusting the direction in which the label is applied)
The operation of adjusting the sticking direction of the label L to the tray T by the sticking device B will be described with reference to FIG.

FIG. 9A shows a case where the label L is attached to the center of the tray T in a direction different by 180 degrees from the direction in which the label L was issued. Even when the label L is changed by 180 degrees and attached, during rotation (m1) from the label suction position P1 of the arm unit 2 to the label application position P2, the direction of the label L is not changed by the rotational movement The sticking unit 3 is rotated (m2) to perform the withdrawal control. The direction of the label L is adjusted by rotating the sticking unit 3 by 180 degrees (m5) about the second rotation shaft 25 by the second rotation driving means 23 after the arm unit 2 reaches the label sticking position P2. There is.
At this time, since the projecting direction of the sticking portion 3 with respect to the second rotation shaft 25 is opposite in the front-rear direction, the sticking position of the label L in the front-rear direction is different from that in the reference sticking state.
In order to cope with the position change, the drive control of the tray T is performed by the front-rear direction drive unit 24, and the adjustment (m6) of the front-rear position of the sticking position is performed.

FIG. 9B shows a case where the label L is attached to the right side portion of the tray T in a direction different by 180 degrees from the direction in which the label L is issued. As in the case of FIG. 9 (a), during the rotation (m1) of the arm unit 2, the sticking unit 3 rotates (m2) the sticking unit 3 to perform withdrawal control, and then the second rotation shaft 25 The orientation of the label L is adjusted by being rotated 180 degrees (m5) around the center, and the drive control of the tray T by the longitudinal drive means 24 is performed to adjust the longitudinal position (m6) of the sticking position. Further, the position of the main body 1 is changed to the right (m3) by the left-right direction driving means 16 so that the issue position of the label of the main body 1 approaches the label sticking position.
As described above, by attaching the label L to the right side portion of the tray T while changing the orientation of the label L by 180 degrees, it is possible to create an attached state substantially the same as attaching the label L to the left side portion of the tray T This eliminates the need to increase the width of the entire sticking device more than necessary.

FIG. 9C shows a case where the label L is attached to the right side portion of the tray T in a direction different by 90 degrees from the direction in which the label L is issued.
The sticking unit 3 rotates (m2) the sticking unit 3 in synchronization with the rotation (m1) from the label suction position P1 of the arm unit 2 to the label sticking position P2, and performs the extraction control, and then the second rotation shaft 25 Is rotated counterclockwise 90 degrees (m7) to adjust the direction of the label L, and the drive control of the tray T by the longitudinal drive means 24 is performed to adjust the longitudinal position of the sticking position (m8) Is done. In addition, the position of the main body 1 is changed to the right (m9) by the left-right direction driving means 16 so that the issue position of the label of the main body 1 approaches the label sticking position.
As described above, the label L can be affixed in various directions to various positions on the surface of the tray T by the sticking device of the present embodiment.

(Electrostatic discharge means of sticking device)
As the packaging process by the packaging apparatus is repeated, static electricity may be accumulated in the packaging apparatus, the package and the like, which is not preferable.
So, in the sticking apparatus of this embodiment, the static elimination means is arrange | positioned in the adsorption pad 33 vicinity of the sticking part 3, and static elimination of the package and the sticking apparatus B is performed.
Hereinafter, the charge removing unit will be described with reference to FIG.

The charge removal means 7 in the present embodiment is formed of a charge removal sheet 71 such as a non-woven fabric having conductivity provided so as to surround the suction pad 33 of the sticking part 3. It is attached by the mounting bracket 72.
The static elimination sheet 71 is formed of a wide tongue-shaped sheet and covers the outer periphery of the suction pad 33 attached to the sub arm 32 on the side opposite to the sticking rod side, and the lower end of the static elimination sheet 71 is the suction pad 33. The suction pad 33 is attached at a position slightly above the lower end, and when the label L is attached to the film F surface, the lower end of the static elimination sheet 71 contacts the film F to remove static electricity accumulated on the film F doing.

Usually, when suction-holding the label L held by standby at the label issue position, the suction pad 33 often sucks the portion placed on the label mounting plate 142 of the label L, and as a result, As shown in FIG. 10A, one side end of the label L is held.
In such a holding state, even if the suction pad 33 is broken to the left from the state of FIG. 10A, the suction pad 33 will be in contact with the upper surface of the film F, and the film F by the suction pad 33. There is less to hurt. On the contrary, as shown in FIG. 10C, when the folding pad is folded to the right, the suction pad 33 directly contacts the upper surface of the film F, and the risk of damaging the film F is high.

  In the static elimination means 7 of the sticking apparatus according to the embodiment of the present invention, the static elimination sheet 71 is configured to cover the outer periphery of the suction pad 33 attached to the sub arm 32 against the sticking stick side. When the sheet is broken to the right as shown in FIG. 10 (c), the static elimination sheet 71 can be present between the suction pad 33 and the film F, and the scratching of the surface of the film F by the suction pad 33 is prevented. can do.

(Configuration of label issuing unit)
A label issuing unit provided on the front of the main unit 1 will be described with reference to FIGS.
As shown in FIG. 11, the label issuing unit cuts the strip-shaped label sheet to form the label L, and the label placement unit supports the lower surface of the label L when the label L is adsorbed by the sticking unit 3 And 14).

The label placement unit 14 is disposed at a position slightly lower in front of the label issue opening 13a opened on the front surface of the cutter means 13, and is supported by the support frame 141 fixed to the main unit 1 (printing means 12). It is attached to 13a so as to be adjustable in the lateral direction.
The label mounting portion 14 is coated with a coating process to prevent sticking, and the label mounting plate 142 on which the label L is mounted and a buffer such as a sponge disposed on the lower surface of the label mounting plate 142 Material 143, and when the label L is adsorbed by the suction pad 33, the load applied to the label L is reduced, and the surface of the label L can be vertically brought into contact with the suction surface of the suction pad 33. There is.
In addition, as an example of a coating process, the coating process can be given by an appropriate method, such as sticking a specially coated film or directly processing the surface of the label mounting plate 142.

The cutter means 13 includes a cutter unit 131 having a fixed blade 131a and a movable blade 131b, and a drive unit 132 for moving the movable blade 131b up and down. A surface plate 133 provided with 133a is disposed and integrally fixed by fixing means n such as screws.
Below the cutter unit 131, an oil application portion 134a for applying oil is held by the oil application portion holding means 134 in order to prevent the adhesive of the label L from adhering to the cutter blade etc. when the label L is cut. The oil application section holding means 134 is provided with a label sticking prevention section 134b for preventing the adhesive surface of the label L adsorbed by the sticking section 3 on the label placing plate 142 from sticking around the label issue port 13a. It is done.

The label sticking prevention portion 134b is formed in a saw-like shape having an upper end with irregularities, and is attached to the surface of the label L which is issued from the label issuing port 13a and placed on the label placing plate 142. The suction surface 33 is pressed against and suctioned, and when the label sheet is cut by the cutter means 13, the adhesive surface in the vicinity of the label issue port 13a is supported from below.
Since the upper end of the label sticking prevention portion 134b is formed in a saw-tooth shape having irregularities, the label L is supported at a plurality of points with respect to the adhesive surface of the label L, and the adhesive surface of the label L It does not stick in the vicinity, it can leave the issue position promptly.

-Deformation prevention structure of suction pad-
Hereinafter, the suction pad of the sticking apparatus according to the present embodiment will be described in more detail.
The suction pad 33 according to the embodiment of the present invention has a substantially cylindrical shape, and a main body portion 331 provided with a buffer portion 331 b formed of a plurality of annular grooves on the outer periphery thereof; It is formed continuously with an expanding conical suction portion 332.
By forming an annular groove on the outer periphery of the main body portion 331, the main body portion 331 of the suction pad 33 made of an elastic material such as rubber is formed as a flexible portion that is easily deformable. The impact of attaching the label L to the tape is mitigated to prevent damage to the product film F.

For example, in the present embodiment, when the sticking unit 3 sticks the label L to the film F of a product, control is performed to cause vacuum destruction in the suction pad 33 and shift the lowering operation of the sticking unit 3 to the raising operation. However, the descent operation has been continued for a predetermined time although it is a very short time from the detection of vacuum destruction to the upward movement, but there is a possibility that the suction pad 33 may damage the film F of the product. .
On the other hand, since the suction pad 33 of the sticking apparatus of the present embodiment has the main body portion 331 formed as a flexible portion, the plurality of annular groove portions are rapidly bent during the lowering operation. , The external force applied to the film F on the upper surface of the product is reduced.

  Furthermore, by forming the plurality of annular groove portions formed in the main body portion 331 of the suction pad 33 into a gently curved surface shape, it can be flexibly bent against bending or breaking, and the force at the time of bending may be concentrated at one point. Because it is small, breakage such as tear is unlikely to occur.

  Further, a skirt portion 333 having elasticity is gradually provided below the suction portion 332 as the tip thereof is gradually reduced in thickness downward, and the tip of the skirt portion 333 is directed downward. Therefore, the annular rib 334 which becomes thin gradually is extended and formed.

As described above, the conical adsorption portion 332 of the suction pad according to the embodiment of the present invention has a main body by the suction force (arrow A) applied to the inner periphery of the suction pad 33 at the time of suction as shown in FIG. Even when the portion 331 is slightly crushed, the suction force applied to the suction portion 332 works slightly downward (arrow a), and thus, it is formed as a hard flexible portion that is difficult to be crushed, and the skirt portion 333 directly contacts the label. It is possible to prevent deformation of the tip of the tip and the tip of the annular rib 334, and maintain the contact surface of the suction pad 33 with the suction surface of the label in a flush state.
The shape of the suction portion 332 formed as the inflexible portion is not limited to the conical shape spreading downward, and may be, for example, a cylindrical shape, or a shape having a hard part inside the cylindrical shape. It may be configured, and furthermore, the inflexible portion may be configured of a hard material that is difficult to deform different from the flexible portion.
In addition, using the same material for the flexible portion (the main portion with an annular groove) and the inflexible portion (the conical portion spreading downward), make the thickness of the conical portion thicker. It may be a hard-to-flex portion.

Under the suction portion 332, a skirt portion 333 and an annular rib 334 which are in direct contact with the label are formed with sufficient elasticity, and the skirt portion 333 is inclined so as to be wider than the inclination of the suction portion 332. Therefore, even if the suction portion 332 is a low-flexibility portion, the skirt portion 333 directly in contact with the label is deformed by the reaction force in the vertical direction when it is in contact with the label surface and It contacts and enables stable adsorption of the label L.
Furthermore, due to the annular rib 334 disposed on the inner periphery of the skirt portion 333, the label as shown in FIG. 11B is not sucked more than necessary, and the surface of the label L is wrinkled or deformed. To prevent that.

  As described above, according to the present invention, the configuration in which the inflexible portion is continuously formed under the main body portion formed as the flexible portion is integrally made of a single material. It is possible to give contradictory performances such as flexibility required for tilting the suction pad and suction of the label, and shape retention required for stability of the label suction force to the suction pad produced. .

1: main body 11: paper support shaft 12: printing means 13: cutter means 13a: label issue port 131: cutter unit 131a: fixed blade 131b: movable blade 132: drive unit 133: surface plate 133a: prevention plate 134: oil application Section holding means 134a: oil application section 134b: label sticking prevention section 14: label placement section 141: support frame 142: label placement plate 143: shock absorbing material 15: first rotation shaft 15a: bracket 15b: bracket 16: left and right Direction drive means 17: Direction drive means 2: Arm part 21: First rotation drive means 22: Vertical drive means 23: Second rotation drive means 24: Direction drive means 25: Second rotation shaft 3: Sticking part 31: Sticking rod 31a: upper end 32: secondary arm portion 321: upper block 321a: air passage 322: lower block 322a : Air passage 323: Shaft 324: Release valve 33: Suction pad 33a: Suction path 331: Body portion 331a: Mounting portion 331b: Buffer portion 332: Suction portion 333: Skirt portion 334: Annular rib 4: Discharge means 50: Control means 51: Pressure sensor 52: Home position stop sensor 53: Deceleration start sensor 6: Pressure adjustment means 6a: Vacuum path 7: Electric discharge means 71: Electric discharge sheet 72: Mounting bracket A: Film wrapping device B: Sticking device F: Film L: Label M1: Arrow M2: Arrow M3: Arrow M4: Arrow M5: Arrow P1: Label adsorption position P2: Label sticking position R: Paper roll T: Tray a: Machine body b: Commodity placement portion c: Film wrapping means d: Conveying conveyor e: product discharge unit h: input display means n: fixing means

Claims (3)

In a hollow suction pad for suctioning labels,
A flexible portion having a cylindrical shape and having a groove on the outer periphery,
A low-flexibility portion having a shape extending downward downward of the flexible portion continuously;
A skirt portion which extends further below the inflexible portion relative to the inflexible portion and elastically deforms along the adsorption surface of the label when the label is adsorbed;
And an elastic annular rib having a lower end located above the lower end of the skirt inside the skirt.
A suction pad characterized in that a diameter of the annular rib is larger than a diameter of the flexible portion . The suction pad according to claim 1, wherein the thickness of the annular rib is gradually reduced as the tip is lowered . A sticking apparatus comprising the suction pad according to claim 1 or 2, wherein the suctioned label is stuck on a sticking material .