Labeling suction head and labeling device

Abstract

To provide a label application suction head and label application device that can be easily constructed. [Solution] The suction head 2 for label application comprises a case-shaped head body 3 having a label suction surface portion 32 on which the label La is adsorbed. The label suction surface portion 32 has an air suction portion 33 having a plurality of air suction holes 331 for drawing in air, and an air blowing portion 34 having a plurality of air blowing holes 341 for blowing out air. The head body 3 has an air suction portion 35 which is a part that draws in air from inside the head body 3, an air supply portion 36 which is a part that supplies air to the inside of the head body 3, and a plurality of cylindrical nozzles 37 which are formed to extend in a cylindrical shape between the air supply portion 36 and the plurality of air blowing holes 341. The label suction surface portion 32, the air suction portion 35, the air supply portion 36 and the plurality of cylindrical nozzles 37 are integrally formed with the head body 3 by integral molding of a resin material.

Description

Technical Field

[0001] The present invention relates to a suction head for label attachment and a label attachment device.

Background Art

[0002] Conventionally, as a suction head for label attachment, one configured by combining a plurality of members such as a nozzle block and sheet metal parts is known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the suction head described in Cited Document 1 is configured by combining a nozzle block, sheet metal parts, etc., the number of parts increases, and the manufacturing cost tends to be high. Therefore, a suction head for label attachment with a simple configuration is desired.

[0005] An object of the present invention is to provide a suction head for label attachment and a label attachment device with a simple configuration.

Means for Solving the Problems

[0006] The present invention relates to a suction head for label application, comprising a case-shaped head body having a label suction surface portion on which a label is adsorbed, wherein the label suction surface portion is formed with an air suction portion having a plurality of air suction holes for drawing in air, and an air blowing portion having a plurality of air blowing holes for blowing out air, wherein the head body comprises an air suction portion formed in communication with the plurality of air suction holes and being a portion that draws in air from inside the head body, an air supply portion formed in communication with the plurality of air blowing holes and being a portion that supplies air to the inside of the head body so as to blow air out from the plurality of air blowing holes, and a plurality of cylindrical nozzles formed in a cylindrical shape between the air supply portion and the plurality of air blowing holes and guiding the air supplied from the air supply portion to the plurality of air blowing holes, wherein the label suction surface portion, the air suction portion, the air supply portion and the plurality of cylindrical nozzles are integrally formed with the head body by integral molding of a resin material.

[0007] Furthermore, it is preferable that the cylindrical nozzle has a spiral projection formed along the inner circumferential surface of the cylindrical nozzle, which extends in a spiral manner while moving in the direction of air travel.

[0008] Furthermore, it is preferable that the inner diameter of the end of the cylindrical nozzle on the air outlet side is smaller than the inner diameter of the cylindrical nozzle at a point along its longitudinal direction.

[0009] Furthermore, it is preferable that the air supply unit includes an air introduction unit for introducing air into the head body, and a hollow spherical air supply unit formed in communication with the air introduction unit and provided with a plurality of air supply holes.

[0010] Furthermore, it is preferable that the air introduction portion and the air supply spherical portion are integrally formed with the air supply portion by integral molding of a resin material, and that the label adsorption surface portion, the air suction portion, the air supply portion and the plurality of cylindrical nozzles, including the air supply portion in which the air introduction portion and the air supply spherical portion are integrally formed, are integrally formed with the head body by integral molding of a resin material.

[0011] Furthermore, it is preferable that the label adsorption surface portion includes a convex portion that protrudes to a predetermined height from the surface in which the plurality of air suction holes and the plurality of air blowing holes are formed, and has a contact surface against which the label makes contact.

[0012] The present invention also relates to a label application device comprising: a suction head; an air supply mechanism for supplying air to the suction head; and a label supply unit for supplying labels to the label adsorption surface of the suction head.

[0013] Furthermore, it is preferable to include a fan that is attached to the suction head and driven to draw air from the air suction section, and the fan is configured to allow control of its driving speed. [Effects of the Invention]

[0014] According to the present invention, it is possible to provide a suction head for label application and a label application device that can be easily constructed. [Brief explanation of the drawing]

[0015] [Figure 1] This is a side view showing the overall configuration of a label application device according to one embodiment. [Figure 2] This is a perspective view of the suction head of a label application device, seen from an oblique upward angle. [Figure 3] This is a perspective view of the suction head of a label application device, seen from a diagonal downward angle. [Figure 4] This is a perspective view illustrating the multiple air supply sections of the suction head. [Figure 5] This is a perspective view illustrating the multiple cylindrical nozzles of the suction head. [Figure 6] This is a view of the suction head of a label application device from below. [Figure 7] Figure 2 is a cross-sectional perspective view along line AA. [Figure 8] This is a cross-sectional view along line AA in Figure 2. [Figure 9]It is a perspective view of a cross-section taken along line B-B in FIG. 2. [Figure 10] It is a cross-sectional view taken along line B-B in FIG. 2. [Figure 11] It is a cross-sectional view taken along line C-C in FIG. 2. [Figure 12] It is a cross-sectional view taken along line D-D in FIG. 10. [Figure 13] It is a cross-sectional view taken along line E-E in FIG. 10. [Figure 14] It is a diagram showing the configuration of the cylindrical nozzle of the suction head.

Embodiment for Carrying out the Invention

[0016] Hereinafter, an embodiment of a label pasting device 1 including a suction head 2 for label pasting according to the present invention will be described with reference to the drawings. FIG. 1 is a side view showing the overall configuration of a label pasting device 1 according to an embodiment. In the description of the present embodiment, when the suction head 2 shown in FIGS. 1 and 2 is viewed from above, the long side direction of the suction head 2 is referred to as the X direction (the downward right direction in FIG. 2), and the short side direction of the suction head 2 is referred to as the Y direction (the downward left direction in FIG. 2). The vertical direction of the suction head 2 is referred to as the Z direction.

[0017] The label pasting device 1 of the present embodiment is a device that sucks the label La fed out by the label feeding unit 13 with air at the suction head 2 to adsorb it on the label adsorption surface portion 32, and blows off the label La adsorbed on the label adsorption surface portion 32 by blowing air from the label adsorption surface portion 32 of the suction head 2 to paste the label La on the object to be pasted T. The suction head 2 is a suction head for label pasting.

[0018] As shown in FIGS. 1 to 3, the label pasting device 1 includes a suction head 2 for label pasting, a pair of air suction fans 11 (air suction mechanism, fan) that suck air from the suction head 2, an air supply mechanism 12 that supplies air to the suction head 2, and a label feeding unit 13 (label supply unit) (see FIG. 1) that feeds out the label La to the label adsorption surface portion 32 of the suction head 2 to supply the label La.

[0019] As shown in Figure 1, the label dispensing unit 13 dispenses and supplies the label La toward the label suction surface 32 of the suction head 2. The label dispensing unit 13 peels the label La from the long label-attached backing paper L and moves the label La from the side of the label suction surface 32 of the suction head 2 along the surface of the label suction surface 32 of the suction head 2, thereby dispensing the label La to the suction position of the label suction surface 32 of the suction head 2.

[0020] As shown in Figure 1, the label-attached backing sheet L is constructed by attaching a plurality of labels La to a backing sheet Lb at predetermined intervals. The labels La are formed in the form of a sheet with a planar shape having a predetermined size. The backing sheet Lb is formed in a long, rectangular shape. Multiple labels La are temporarily attached to the backing sheet Lb at predetermined intervals along the length of the backing sheet Lb.

[0021] As shown in Figures 2 to 12, the suction head 2 comprises a case-shaped head body 3. The head body 3 includes a case body 31, a label suction surface portion 32 on which the label La is adsorbed, an air intake portion 35, an air supply portion 36, and a plurality of cylindrical nozzles 37. The case body 31, the label suction surface portion 32, the air intake portion 35, the air supply portion 36, and the plurality of cylindrical nozzles 37 are integrally formed with the head body 3 by integral molding of resin material. The head body 3 is manufactured, for example, by a 3D printer, and is formed, for example, by integral molding of resin material using a 3D printer.

[0022] As shown in Figures 2 and 3, the case body 31 has a flat, plate-like top plate 311 whose outer shape is rectangular in plan view, a flat, plate-like bottom plate 312 which is positioned parallel to and opposite the bottom plate 311 and whose outer shape is rectangular in size to the top plate 311 in plan view, and a plate-like peripheral wall plate 313 which forms a peripheral wall surrounding the case body 31 on all four sides and connects the outer peripheral edge of the top plate 311 to the outer peripheral wall of the bottom plate 312 and extends in the Z direction, and is formed in a box shape that is roughly rectangular in shape.

[0023] The label suction surface portion 32 is formed on the lower plate 312 of the head body 3. As shown in Figure 1, the label La is peeled from the label-attached backing paper L by the label dispensing portion 13 and supplied to the label suction surface portion 32.

[0024] As shown in Figures 3, 6 to 11, the label adsorption surface 32 is formed with an air suction section 33 having a plurality of air suction holes 331 into which air is drawn, and an air blowing section 34 having a plurality of air blowing holes 341 into which air is blown out. The label adsorption surface 32 also has a plurality of protrusions 321 that have a contact surface into which the label La comes into contact. The air suction section 33 with the plurality of air suction holes 331, the air blowing section 34 with the plurality of air blowing holes 341, and the plurality of protrusions 321 are integrally formed on the label adsorption surface 32.

[0025] As shown in Figures 3, 5, and 6, the multiple protrusions 321 are formed in the shape of elongated rectangular parallelepipeds extending in the Y direction and are arranged in a line in the X direction. The protrusions 321 are formed in a position that avoids the multiple air intake holes 331 and the multiple air outlet holes 341 in the X direction.

[0026] As shown in Figures 8, 10, and 11, the multiple protrusions 321 are formed to protrude a predetermined height H below the surface on which the multiple air intake holes 331 and multiple air outlet holes 341 are formed. For example, the predetermined height H at which the multiple protrusions 321 protrude from the surface on which the multiple air intake holes 331 and multiple air outlet holes 341 are formed is, for example, 0.1 mm to 2.0 mm.

[0027] When the label La is attached to the label adsorption surface 32, the label La is positioned in contact with the plurality of protrusions 321, and away from the lower ends of the plurality of air intake holes 331 and the plurality of air blowing holes 341.

[0028] As shown in Figures 2 to 4, the air intake section 35 has a pair of air intake ports 351. Each of the pair of air intake ports 351 is formed to open in a circular shape, penetrating in the X direction, on both outer side plates in the X direction of the peripheral wall plate 313 of the case body 31. An air suction fan 11 is attached to each of the pair of air intake ports 351. The air suction fan 11 is attached to the suction head 2 and is driven by a fan drive unit (not shown) to draw air from the air intake section 33. The air suction fan 11 is electrically connected to the fan drive unit (not shown).

[0029] The air suction fan 11 can have its drive speed electrically controlled by the fan drive unit. This allows for easy adjustment of the suction force used to attract the label La, enabling control to reduce the suction force while the label La is being moved and increase it when the label La reaches the adsorption position.

[0030] The pair of air intake ports 351 are located in the case body 31 of the head body 3 and are the parts that draw in air from inside the case body 31. The pair of air intake ports 351 are formed to communicate with a plurality of air suction holes 331 of the air suction unit 33 via the lower part of the inside of the case body 31. With the label La attached to the label adsorption surface 32 of the adsorption head 2, air is drawn in from the pair of air intake ports 351 from the space inside the lower part of the case body 31 of the head body 3, and air is drawn in with the plurality of air suction holes 331 of the air suction unit 33 that communicate with the space inside the lower part of the case body 31, thereby maintaining the state in which the label La is attached to the label adsorption surface 32 of the adsorption head 2.

[0031] The two air supply units 36 are formed on the top plate 311 of the case body 31, as shown in Figures 9 to 11. The two air supply units 36 are parts of the case body 31 of the head body 3 that supply air into the space K on the upper side of the case body 31.

[0032] Each of the two air supply units 36 includes an air introduction unit 361 formed on the top plate 311 of the case body 31 for introducing air into the case body 31, and a hollow spherical air supply unit 362 located inside the case body 31 and communicating with the air introduction unit 361. The air introduction unit 361 and the spherical air supply unit 362 are integrally formed with the air supply unit 36.

[0033] Each of the two air inlet sections 361 is formed in a cylindrical shape that extends upward for a predetermined length from the top plate 311 of the case body 31. The two air inlet sections 361 are positioned apart in the X direction on the upper surface of the top plate 311 of the case body 31. As shown in Figures 1 and 2, an air supply mechanism 12 that supplies air to the suction head 2 is connected to the two air inlet sections 361.

[0034] In the air supply mechanism 12, the amount of air supplied to the inside of the case body 31 from the two air supply units 36 can be adjusted. This allows the air supply mechanism 12 to adjust the amount of air supplied to the suction head 2 and to adjust the amount of air blown out from the multiple air outlet holes 341 of the air outlet unit 34.

[0035] The air supply spherical section 362 is connected to the lower end of the air introduction section 361 inside the case body 31. Multiple air supply holes 362a are formed on the spherical surface of the air supply spherical section 362, penetrating from the inside to the outside of the air supply spherical section 362. The multiple air supply holes 362a communicate the inside of the air supply spherical section 362 with the space K on the upper side of the case body 31. In this embodiment, as shown in Figure 12, four air supply holes 362a are provided on the spherical surface of the air supply spherical section 362, and are formed to penetrate and open in four horizontal directions.

[0036] In this embodiment, as shown in Figure 12, the four air supply holes 362a open horizontally, and when viewed from above, they are formed on the spherical surface of the air supply spherical part 362 at positions that are rotated and shifted by 90° from each other at their central angles. All four air supply holes 362a open in a direction inclined at 45° with respect to the X and Y directions.

[0037] The two air supply units 36 each supply air into the upper space K of the case body 31 of the head body 3 via an air introduction unit 361 and an air supply spherical unit 362, so as to blow air out from multiple air outlet holes 341 of the air outlet unit 34. The two air supply units 36 are formed to communicate with the multiple air outlet holes 341 of the air outlet unit 34 via the upper space K of the case body 31 and multiple cylindrical nozzles 37.

[0038] As shown in Figures 7 to 11, the multiple cylindrical nozzles 37 are arranged inside the case body 31 and are formed to extend cylindrically in the Z direction between the two air supply units 36 and the multiple air outlet holes 341. Each of the multiple cylindrical nozzles 37 is supplied with air from the two air supply units 36 through the space K on the upper side of the case body 31, and the air supplied from the two air supply units 36 is guided to the multiple air outlet holes 341. Air flows through the cylindrical nozzles 37 from the air supply unit 36 ​​side toward the multiple air suction holes 331 side.

[0039] As shown in Figures 13 and 14, the cylindrical nozzle 37 has three helical projections 371 formed along the inner circumferential surface of the cylindrical nozzle 37, which spiral and extend in a spiral manner as they advance in the direction of air travel. Each of the three helical projections 371 is formed by projections that protrude from the inner circumferential surface of the cylindrical nozzle 37 and extend in a spiral linear manner.

[0040] The three spiral ridges 371 extend spirally along the inner surface of the cylindrical nozzle 37, with a gap between them on the inner surface of the cylindrical nozzle 37. Because the three spiral ridges 371 are formed on the inner surface of the cylindrical nozzle 37, the diffusion of air passing through the inside of the cylindrical nozzle 37 is suppressed, and the straightness of the air's movement can be improved.

[0041] On the inner circumferential surface of the cylindrical nozzle 37, a reduced diameter portion 372 is provided at the longitudinal end of the cylindrical nozzle 37 on the air outlet hole 341 side. In the longitudinal direction, the cylindrical nozzle 37 is formed with the same inner diameter except for the reduced diameter portion 372 at the end on the air outlet hole 341 side, and the inner diameter R1 of the reduced diameter portion 372 at the end on the air outlet hole 341 side is formed to be smaller than the inner diameter R2 at the middle of the cylindrical nozzle 37 in the longitudinal direction. By reducing the inner diameter of the reduced diameter portion 372 at the end on the air outlet hole 341 side, the velocity of the air blown out from the air outlet hole 341 can be improved.

[0042] In the label application suction head 2 described above, the case body 31, label application surface 32, air intake 35, air supply 36, and multiple cylindrical nozzles 37 are integrally formed on the head body 3 by integral molding of resin material, for example, using a 3D printer. This includes an air intake section 33 having a plurality of air intake holes 331, an air outlet section 34 having a plurality of air outlet holes 341, and a label application surface section 32 integrally formed with a plurality of protrusions 321, and an air supply section 36 integrally formed with an air introduction section 361 and an air supply spherical section 362.

[0043] As a result, the head body 3 is formed by integral molding of resin material, making it lighter than, for example, a head body 3 formed from metal material. Furthermore, since the head body 3 can be formed integrally from resin material using only the necessary parts, rather than being composed of multiple parts, it can be made small and compact. In addition, since the label adsorption surface 32, air intake part 35, air supply part 36, and multiple cylindrical nozzles 37 can be integrally formed on the head body 3, the number of parts in the head body 3 can be reduced to one, thus reducing manufacturing costs compared to when it is composed of multiple parts.

[0044] When the suction head 2 is used to attach the label La to the object T, as shown in Figure 1, the label dispensing unit 13 peels the label La from the label backing L and supplies the label La to the label suction surface 32 of the suction head 2.

[0045] As shown in Figures 8, 10, and 11, the label adsorption surface 32 of the adsorption head 2 has a plurality of protrusions 321. Therefore, when a label La is adsorbed onto the label adsorption surface 32, the label La is positioned in contact with the plurality of protrusions 321 at a location lower than the plurality of air suction holes 331 and the plurality of air blowing holes 341. Because the label La contacts the plurality of protrusions 321, the contact area between the label La and the label adsorption surface 32 can be reduced, and when the label La moves along the surface of the label adsorption surface 32 from the side, frictional resistance can be reduced compared to when the label La and the label adsorption surface 32 are in full contact. Thus, when adsorbing a label La onto the label adsorption surface 32 of the adsorption head 2, the label La can be smoothly advanced to the adsorption position of the label adsorption surface 32 of the adsorption head 2.

[0046] Then, a pair of air suction fans 11 attached to a pair of air intake ports 351 of the air intake unit 35 are driven by a fan drive unit (not shown), causing air to be drawn in from the air suction unit 33, which has a plurality of air suction holes 331 formed in the label suction surface 32 of the suction head 2. The labels La supplied to the label suction surface 32 of the suction head 2 are then adsorbed onto the label suction surface 32 of the suction head 2.

[0047] The air suction fan 11 can easily change the suction force that sucks up the label La by electrically controlling the drive speed of the fan drive unit. This allows for control to reduce the suction force while the label La is being moved and increase it when the label La reaches the adsorption position.

[0048] Next, the air supply mechanism 12 supplies air to the inside of the case body 31 from two air supply units 36, causing air to be blown downwards from the air blowing unit 34 formed on the label adsorption surface 32. In this way, the label La that has been adsorbed onto the label adsorption surface 32 of the adsorption head 2 is blown towards the object to be attached T by the air, thereby being blown onto the object T and attached.

[0049] Conventionally, when label La is properly attached to an object T, it was preferable that the distance from the label suction surface 32 of the suction head 2 to the object T be attached to be 20 mm or less. If the distance from the label suction surface 32 of the suction head 2 to the object T is greater than 20 mm, the air blown out from the label suction surface 32 may draw in surrounding air, causing label La to spread and become unstable, resulting in inconsistencies in the accuracy of label La attachment.

[0050] In cases where label La is to be attached to a recessed area of ​​object T, the distance from the label suction surface 32 of the suction head 2 to the desired attachment location may exceed, for example, 20 mm. Therefore, there was a demand to increase the distance from the label suction surface 32 of the suction head 2 to object T compared to conventional designs.

[0051] In contrast, in the present invention, the cylindrical nozzle 37 has a spiral projection 371 formed along its inner circumferential surface that spirals and extends in the direction of air travel, and the inner diameter R1 of the reduced diameter portion 372 at the end on the air outlet hole 341 side is formed to be smaller than the inner diameter R2 in the middle of the longitudinal direction of the cylindrical nozzle 37.

[0052] As a result, the cylindrical nozzle 37 has a spiral projection 371, which improves the straightness of the air passing through the inside of the cylindrical nozzle 37. Furthermore, in the cylindrical nozzle 37, the inner diameter R1 of the reduced diameter portion 372 at the end on the air blowing hole 341 side is formed to be smaller than the inner diameter R2 in the middle of the longitudinal direction of the cylindrical nozzle 37, thus improving the velocity of the air blown out from the air blowing hole 341. Therefore, even if the distance from the label adsorption surface portion 32 to the object to be attached T is longer than in the conventional method, the label La can be effectively blown onto the object to be attached T, and the label La can be stably and effectively attached to the object to be attached T.

[0053] The label-applying suction head 2 of this embodiment provides, for example, the following effects: The label application suction head 2 comprises a case-shaped head body 3 having a label suction surface portion 32 on which the label La is adsorbed. The label suction surface portion 32 has an air suction portion 33 having a plurality of air suction holes 331 for drawing in air, and an air blowing portion 34 having a plurality of air blowing holes 341 for blowing out air. The head body 3 has an air suction portion 35 which is a part that draws in air from inside the head body 3, an air supply portion 36 which is a part that supplies air to the inside of the head body 3, and a plurality of cylindrical nozzles 37 which extend in a cylindrical shape between the air supply portion 36 and the plurality of air blowing holes 341. The label suction surface portion 32, the air suction portion 35, the air supply portion 36, and the plurality of cylindrical nozzles 37 are integrally formed with the head body 3 by integral molding of a resin material.

[0054] As a result, the label suction surface 32, air intake section 35, air supply section 36, and multiple cylindrical nozzles 37 are integrally formed with the head body 3 by integral molding of resin material, making the head body 3 lighter than if it were formed from, for example, a metal material. Therefore, the suction head 2 for label application is easy to handle. Furthermore, since the head body 3 can be formed as a single unit by integral molding of only the necessary parts from resin material, rather than being composed of multiple parts, it can be made small and compact. Therefore, the suction head 2 can be easily constructed. Thus, the suction head 2 for label application is easy to handle.

[0055] Furthermore, since the label suction surface 32, air intake section 35, air supply section 36, and multiple cylindrical nozzles 37 can be integrally formed on the head body 3, the number of parts can be reduced to one, and the suction head 2 can be easily constructed. Therefore, manufacturing costs can be reduced compared to cases where the head is composed of multiple parts.

[0056] Furthermore, the label suction surface 32, air intake section 35, air supply section 36, and multiple cylindrical nozzles 37 are integrally formed with the head body 3 by integral molding using resin material. Therefore, they can be created, for example, using a 3D printer, to match the shape and size of the attachment area of ​​the workpiece (object to be attached) or the size and shape of the label La. Thus, a one-of-a-kind head body 3 can be created to match the attachment area of ​​the workpiece (object to be attached) or the label La, resulting in high versatility.

[0057] Furthermore, in this embodiment, the cylindrical nozzle 37 has a spiral projection 371 formed along its inner circumferential surface, which spirals and extends in a spiral manner while moving in the direction of air travel. This improves the straightness of the air passing through the inside of the cylindrical nozzle 37. As a result, the air blown out from the multiple air outlets 341 does not diffuse and its straightness is improved, so that the label La can be effectively blown onto the object T to be attached. Also, because the air blown out from the multiple air outlets 341 does not diffuse and its straightness is improved, even when the distance from the label adsorption surface 32 to the object T to be attached is long, the label La can be effectively blown onto the object T to be attached, and the label La can be attached to the object T.

[0058] Furthermore, in this embodiment, the cylindrical nozzle 37 has an inner diameter R1 of the reduced diameter portion 372 at the end facing the air outlet 341 that is smaller than the inner diameter R2 in the middle of the cylindrical nozzle 37 in the longitudinal direction. By reducing the inner diameter at the end facing the air outlet 341, the cylindrical nozzle 37 can improve the velocity of the air blown out from the multiple air outlets 341. As a result, the air blown out from the multiple air outlets 341 can effectively blow the label La towards the object T to be attached, thus enabling the label La to be properly adhered to the object T. In addition, because the velocity of the air blown out from the multiple air outlets 341 can be improved, even when the distance from the label adsorption surface 32 to the object T is long, the label La can be effectively blown towards the object T and adhered to the object T.

[0059] Furthermore, in this embodiment, the air supply unit 36 ​​includes an air introduction unit 361 for introducing air into the head body 3, and a hollow spherical air supply unit 362 formed in communication with the air introduction unit 361 and provided with a plurality of air supply holes 362a. As a result, the air can be supplied to the head body 3 by dispersing the air in multiple angular directions in the horizontal direction through the multiple air supply holes 362a of the spherical air supply unit 362. Therefore, since the air can be blown out from the multiple air outlet holes 341 while the air is dispersed in multiple angular directions in the horizontal direction, the label La is more easily blown off the label adsorption surface 32 while maintaining a horizontal position, and the label La can be properly attached to the object T to be attached.

[0060] Furthermore, in this embodiment, the label adsorption surface 32, air intake 35, air supply 36, and multiple cylindrical nozzles 37 are integrally formed on the head body 3 by integral molding of resin material, including the air supply unit 36 ​​in which the air introduction unit 361 and the air supply spherical unit 362 are integrally formed. As a result, the head body 3 can be made lightweight and compact, and the number of parts can be reduced to one, thereby reducing manufacturing costs compared to when it is composed of multiple parts.

[0061] Furthermore, in this embodiment, the label adsorption surface portion 32 is formed to protrude by a predetermined height from the surface in which the plurality of air suction holes 331 and the plurality of air blowing holes 341 are formed, and includes a convex portion 321 having a contact surface against which the label La abuts. As a result, since the label La abuts against the plurality of convex portions 321, frictional resistance can be reduced compared to when the label La and the label adsorption surface portion 32 are in full contact, and when the label La is adsorbed onto the label adsorption surface portion 32 of the adsorption head 2, the label La can be smoothly advanced to the adsorption position of the label adsorption surface portion 32 of the adsorption head 2.

[0062] Furthermore, the label application device 1 of this embodiment includes a suction head 2, an air supply mechanism 12 that supplies air to the suction head 2, and a label dispensing unit 13 that supplies labels La to the label suction surface 32 of the suction head 2. As a result, the suction head 2 can be made lightweight and compact, and therefore the label application device 1 can be made lightweight and compact.

[0063] Furthermore, in this embodiment, the air suction fan 11 is configured to allow control of its drive speed. This allows the air suction fan 11 to easily change the suction force used to attract the label La, enabling control to reduce the suction force while the label La is being moved and increase it when the label La reaches the adsorption position.

[0064] Although preferred embodiments have been described above, the present invention can be implemented in various forms without being limited to the embodiments described above. [Explanation of symbols]

[0065] 1. Labeling device 2. Suction head for label application 3 Head body 11. Air suction fan (fan) 12 Air supply mechanism 13. Label dispensing unit (label supply unit) 32 Label adsorption surface 33 Air suction section 34 Air outlet 35 Air intake section 36 Air supply unit 37 Cylindrical nozzle 321 Convex part 331 Air intake port 341 Air vents 361 Air Inlet 362 Air supply spherical part 362a Air supply port 371 Spiral protrusion La Label

Claims

1. A suction head for label application, It comprises a case-shaped head body having a label-adsorbing surface portion on which labels are adsorbed, The label adsorption surface portion is formed with an air suction section having a plurality of air suction holes into which air is drawn, and an air blowing section having a plurality of air blowing holes into which air is blown out. The head body includes an air intake section formed in communication with the plurality of air intake holes and which is a part that sucks in air from inside the head body; an air supply section formed in communication with the plurality of air outlet holes and which is a part that supplies air to the inside of the head body so as to blow air out from the plurality of air outlet holes; and a plurality of cylindrical nozzles formed in a cylindrical shape between the air supply section and the plurality of air outlet holes and which guide the air supplied from the air supply section to the plurality of air outlet holes. A label-applying suction head, comprising the label-applying surface, the air-suction section, the air-supply section, and a plurality of cylindrical nozzles, integrally formed with the head body by integral molding of a resin material.

2. The suction head for label application according to claim 1, wherein the cylindrical nozzle has a spiral projection formed along the inner circumferential surface of the cylindrical nozzle and extending in a spiral manner while moving in the direction of air travel.

3. The suction head for label application according to claim 1 or 2, wherein the cylindrical nozzle is formed such that the inner diameter of the end on the air outlet side is smaller than the inner diameter of the cylindrical nozzle in the middle of its longitudinal direction.

4. The suction head for label application according to claim 1 or 2, wherein the air supply unit comprises an air introduction unit for introducing air into the head body and a hollow spherical air supply unit formed in communication with the air introduction unit and provided with a plurality of air supply holes.

5. The air introduction section and the air supply spherical section are integrally formed with the air supply section by integral molding of a resin material. The label suction head for label application according to claim 4, wherein the label suction surface, the air suction portion, the air supply portion, and the plurality of cylindrical nozzles are integrally formed with the head body by integral molding of a resin material, including the air supply portion in which the air introduction portion and the air supply spherical portion are integrally formed.

6. The label suction surface portion comprises a protrusion formed to protrude by a predetermined height from the surface on which the plurality of air suction holes and the plurality of air blowing holes are formed, and having a contact surface on which the label comes into contact, as described in claim 1 or 2.

7. A suction head according to claim 1 or 2, An air supply mechanism that supplies air to the suction head, A label application device comprising a label supply unit that supplies labels to the label adsorption surface of the adsorption head.

8. The suction head is equipped with a fan that is attached to and driven by the suction head to draw air from the air suction section, The labeling device according to claim 7, wherein the fan is configured to have a controllable drive speed.

Images