Labeling machine

Abstract

The invention discloses a labeling machine which is suitable for box sticking of a folding label, the folding label comprises a box sticking part and a cover turning part which are connected with each other, and the box sticking part is folded and then combined with the cover turning part; the labeling machine comprises a conveying device, a gluing device, a labeling device, a dispensing device, a folding mechanism, a bubble pressing device and a box discharging device, the gluing device, the labeling device, the dispensing device, the folding mechanism, the bubble pressing device and the box discharging device are sequentially distributed in the conveying direction of the conveying device, and the gluing device smears or adheres an adhesive layer on a packaging box. The labeling device is provided with a labeling manipulator for sticking a box sticking part of a label to a packaging box, the dispensing device is used for spraying an adhesive on the box sticking part, the folding mechanism is used for folding the cover turning part and sticking the cover turning part to the box sticking part, the bubble pressing device is used for pressing and removing bubbles between the box sticking part and the cover turning part in the folded label, and the box discharging device is used for conveying the packaging box to the next process. Automatic labeling of opening labels can be achieved, the production efficiency is improved, and the defective rate is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging equipment, and in particular relates to a labeling machine. Background Art

[0002] In order to achieve the purpose of anti-counterfeiting, packaging boxes generally adopt a variety of anti-counterfeiting methods, such as: the top box and the bottom box are connected by an anti-counterfeiting buckle structure, and the box body is destroyed when the box is opened to achieve anti-counterfeiting, or a tear tape structure is used on the wine box, and the tear tape is bonded to the opening label. When opening the box, the opening label is torn off and the tear tape is torn off to destroy the box body to achieve anti-counterfeiting.

[0003] For anti-counterfeiting boxes with opening labels and tear tapes, the opening label is a special-shaped structure, which is a folding label. After folding and merging, the overall shape is 8. When sticking the opening label, first use the automatic double-sided adhesive device to stick double-sided adhesive to the opening label, then align it with the reserved position on the box body and manually stick the label, and finally press and remove bubbles, but manual labeling has low production efficiency and high defective rate. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a labeling machine, which can realize automatic labeling of opened labels, improve production efficiency and reduce the defective rate.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A labeling machine, the labeling machine is suitable for gluing boxes of folding labels, the folding label includes a box gluing part and a flap part connected to each other, the box gluing part is merged with the flap part after being folded; the labeling machine includes a gluing device, the labeling machine also includes a conveying device, a labeling device, a gluing device and a folding mechanism, the gluing device, the labeling device, the gluing device and the folding mechanism are sequentially distributed along the conveying direction of the conveying device, the gluing device applies or sticks an adhesive layer on the packaging box, the labeling device is provided with a labeling robot for sticking the box gluing part of the label to the packaging box, the gluing device sprays adhesive on the box gluing part, the folding mechanism folds the flap part and sticks the flap part to the box gluing part, and the bubble pressing device presses out bubbles between the box gluing part and the flap part in the folding label.

[0007] In one embodiment of the present invention, the folding mechanism comprises a folding guide portion fixed above the conveying device, and the folding guide portion guides the flap portion of the folding label to be attached to the box adhesive portion.

[0008] In one embodiment of the present invention, the folding guide portion includes a transition linear guide rail and a folding arc guide rail, the transition linear guide rail is connected to the folding arc guide rail, and the direction of conveying the packaging box along the conveying device is assumed to be the X-axis, and the direction perpendicular to the X-axis in the horizontal plane is assumed to be the Y-axis. In the Y-axis direction, the vertical distance between the starting point and the end point of the folding arc guide rail is equal to or greater than the width of the folded label after folding.

[0009] In one embodiment of the present invention, the folded arc guide rail is provided with a pre-compression defoaming member.

[0010] In one embodiment of the present invention, the pre-pressing and debubbling member comprises a roller frame connected to the folding arc guide rail, and the roller frame is provided with a plurality of groups of bubble-pressing rollers for rolling the folded label.

[0011] In one embodiment of the present invention, the foam pressing roller group includes an oscillating member, a limiting member, an elastic member and a fixing pin. The oscillating member is hinged to the roller frame, and a pressure roller is installed at the A end of the oscillating member. The fixing pin is fixed to the roller frame. One end of the elastic member is connected to the fixing pin, and the other end is connected to the B end of the oscillating member. The limiting member is also fixed to the roller frame and can abut against the B end of the oscillating member.

[0012] In one embodiment of the present invention, the elastic member is a tension spring or a compression spring.

[0013] In one embodiment of the present invention, the bubble pressing device comprises a gantry and a bubble pressing driving member, the gantry is fixed to the conveying device, the bubble pressing driving member is fixed to the gantry, and the bubble pressing driving member is installed with a bubble pressing block.

[0014] In one embodiment of the present invention, the labeling device includes a label bin and a labeling robot, the labeling robot is provided with a camera assembly, the label bin includes a turntable and a lifting device, the turntable is provided with a plurality of sub-bins and a plurality of lifting holes, one lifting hole corresponds to one sub-bin, the lifting device is provided with a liftable lifting rod, the lifting rod passes through the lifting hole and extends to the corresponding sub-bin.

[0015] In one embodiment of the present invention, the glue dispensing device includes a glue spraying robot and a glue spraying assembly, and the glue spraying assembly is installed on the glue spraying robot.

[0016] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0017] The present invention adopts a labeling machine including a conveying device, a gluing device, a labeling device, a glue dispensing device and a folding mechanism. The conveying device is used to complete the conveyance of the packaging box, the gluing device is used to complete the gluing or sticking of the packaging box surface, the labeling device is used to stick the folded label to the packaging box, the glue dispensing device is used to spray adhesive on the box sticking part of the folded label, and the folding mechanism is used to complete the folding and sticking of the folded label. Compared with the prior art, it can realize automatic labeling of open labels, improve production efficiency, and reduce the defective rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 is a schematic diagram of a labeling machine in the present invention;

[0020] Figure 2 It is a first schematic diagram of a box feeding device, a conveying device, a gluing device and a labeling gripping device of the labeling machine in the present invention;

[0021] Figure 3 It is a second schematic diagram of the box feeding device, the conveying device, the gluing device and the labeling gripping device of the labeling machine in the present invention;

[0022] Figure 4 It is a schematic diagram of the label silo in the present invention;

[0023] Figure 5 It is a front view of the label silo in the present invention;

[0024] Figure 6 It is a schematic diagram of the glue dispensing device, the folding mechanism, the bubble pressing device and the box discharging device in the present invention;

[0025] Figure 7 It is a schematic diagram of the pre-pressed defoaming member in the present invention;

[0026] Figure 8 is a schematic diagram of the folding mechanism in the present invention;

[0027] Fig. 9 is a schematic diagram of a folding label in the present invention;

[0028] Fig.10 This is a schematic diagram of the state when the foldable label of the present invention is just pasted to the packaging box.

[0029] Icons: 1-platen, 21-conveyor belt, 22-fence, 3-glue device, 31-horizontal traverse assembly, 33-glue dispensing head, 41-label silo, 411-turntable, 412-column, 413-bottom plate, 414-ejection hole, 415-ejection device, 4151-ejection rod, 42-labeling robot, 5-glue dispensing device, 51-frame, 52-translation module, 6-folding mechanism, 6 1-transition linear guide, 62-folding arc guide, 7-pre-pressing and de-bubbling part, 71-roller frame, 72-bubble pressing roller group, 73-swinging part, 74-limiting part, 75-elastic part, 76-fixing pin, 77-pressing roller, 8-bubble pressing device, 81-gantry, 82-bubble pressing driving part, 9-box discharging device, 91-box taking robot, 10-folding label, 101-flip cover part, 102-box gluing part. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present invention, it should be noted that if the terms "inside" or "outside" appear to indicate an orientation or position relationship, it is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "configure", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The present application provides a labeling machine, which is suitable for gluing boxes of folding labels 10, wherein the folding labels 10 include a box gluing portion 102 and a flap portion 101 connected to each other, wherein the box gluing portion 102 is merged with the flap portion 101 after being folded; the labeling machine includes a conveying device, a gluing device 3, a labeling device, a gluing device 5, a folding mechanism 6, a bubble pressing device 8 and a box discharging device 9, wherein the gluing device 3, the labeling device, the gluing device 5, the folding mechanism 6, the bubble pressing device 8 and the box discharging device 9 are conveyed along the conveying device of the conveying device. The folding mechanism 6 folds the flap part 101 and sticks the flap part 101 to the box-sticking part 102, the bubble pressing device 8 presses out bubbles between the box-sticking part 102 and the flap part 101 in the folded label 10, and the box-out device 9 conveys the box to the next process.

[0036] The following embodiments are described in detail based on the above scheme.

[0037] Example

[0038] The present embodiment provides a labeling machine suitable for gluing a folding label 10. The folding label 10 includes a gluing portion 102 and a flap portion 101 connected to each other. During the production process, the gluing portion 102 needs to be folded and combined with the flap portion 101. Figure 9-10 This embodiment adopts Fig. 9 The foldable label 10 shown is in an 8-shape as a whole after being folded and combined. The foldable label 10 described in the present application is not limited to the 8-shaped foldable label 10, but is also applicable to other foldable labels 10 that need to be folded and combined.

[0039] Please refer to Figure 1-3In this embodiment, the labeling machine is provided with a table 1, on which are mounted a box-entering device, a conveying device, a gluing device 3, a labeling device, a gluing device 5, a folding mechanism 6, a bubble-pressing device 8 and a box-outlet device 9. The gluing device 3, the labeling device, the gluing device 5, the folding mechanism 6, the bubble-pressing device 8 and the box-outlet device 9 are sequentially distributed along the conveying direction of the conveying device. Among them, the box-entering device adopts a box-entering conveyor belt 21 and a box-entering manipulator. Both the box-entering conveyor belt 21 and the box-entering manipulator adopt existing technologies. The box-entering manipulator can adopt a multi-axis robot, or can adopt a motor-driven KK module to realize the lateral movement of the manipulator, and a lifting cylinder to realize the lifting of the manipulator. The negative pressure suction cup completes the structure of adsorbing, grasping or releasing the packaging box. The conveying device is used to transport the packaging box, and the existing conveyor belt 21 can be used. Those skilled in the art can also use other existing conveying devices. In this embodiment, the conveying device adopts a conveyor belt 21. In order to prevent the packaging box from accidentally escaping from the conveyor belt 21 during the conveying process, fences 22 are respectively provided on both sides of the conveyor belt 21 in this embodiment, and the height of the fences 22 is not higher than the height of the packaging box during the conveying process.

[0040] Please refer to Figure 1-3 In this embodiment, the gluing device 3 is used to apply or paste the adhesive layer on the packaging box. Specifically, the gluing device 3 can be a device for spraying adhesive on the packaging box, for example, a gluing device 3 including a horizontal traverse component 31, a lifting cylinder and a glue dispensing head 33 is used. Figure 2 and 3The horizontal lateral movement component 31 adopts a motor-driven KK module. The horizontal lateral movement component 31 is installed with a lifting cylinder through a connecting plate, and then the lifting cylinder is used to control the lifting of the glue dispensing head 33. When the packaging box reaches the gluing device 3, the conveyor belt 21 stops, and the lifting cylinder controls the glue dispensing head 33 to descend to a predetermined position. While the glue dispensing head 33 is dispensing glue, the horizontal lateral movement component 31 controls the glue dispensing head 33 to slowly move horizontally for a certain distance. This distance is the glue coating length. When the gluing is completed, the glue dispensing head 33 stops dispensing glue, the lifting cylinder rises and resets, the horizontal lateral movement component 31 resets, the conveyor belt 21 restarts and transports the packaging box, waiting for the next packaging box. The gluing device 3 can also be a device for sticking double-sided tape on the packaging box, for example, an automatic double-sided tape sticking device is used, which is the invention patent "A device and method for automatically sticking double-sided tape" announced on December 16, 2022 and applied for by the present applicant, which discloses the automatic double-sided tape sticking device used in this embodiment, and the adhesive layer of the double-sided tape can be cut into several sections by half-cutting by the glue cutting device, while the release paper remains continuous, and then the release paper is pulled by using the characteristic that the release paper is a whole strip, and the release paper driving device is used to pull the release paper, and the sections of the adhesive layer are pulled to the sticking section in turn, and then the gluing device is used to press a section of the adhesive layer onto a box body in turn, and the pulling of the release paper driving device can separate a section of the adhesive layer stuck on the box body from the release paper, thereby realizing the sticking of a section of the adhesive layer on each box body transmitted by the conveyor belt 21 in turn, and the sticking positions all correspond to the gluing device.

[0041] It should be noted that this embodiment uses a gluing device 3 for spraying adhesive and is installed at the front end of the conveyor belt 21. When the packaging box is placed on the conveyor belt 21, the packaging box is first sprayed with adhesive by the gluing device 3 to prepare for the subsequent pasting of the folding label 10.

[0042] Please refer to Figure 1-3 In this embodiment, the labeling device is used to attach the label's box-adhesive portion 102 to the packaging box. The labeling device includes a label material bin 41 and a labeling robot 42. The labeling robot 42 uses an existing industrial robot equipped with a negative pressure suction cup, such as an Epson GX series robot. The negative pressure suction cup can also use existing technology. The labeling robot 42 absorbs or releases the unfolded folded label 10 through the negative pressure suction cup. Please refer to Figure 4-5The label bin 41 includes a rotating disk 411 and a feeding device 415. The rotating disk 411 is provided with a plurality of sub-bins and a plurality of feeding holes 414. One feeding hole 414 corresponds to one sub-bin. Each sub-bin is surrounded by a plate or a rod. In this embodiment, a single sub-bin is surrounded by three columns 412. A bottom plate 413 is placed in each sub-bin. The unfolded folding labels 10 are stacked between the three columns 412 and placed on the bottom plate 413. The feeding device 415 includes a motor and a lifting rod 4151 that can be lifted and lowered. The motor drives the lifting rod 4151 to lift and lower. When the lifting rod 4151 rises, it can pass through the lifting hole 414 and extend to the corresponding sub-bin, and lift the folding label 10 in the sub-bin to a predetermined position. In this embodiment, the feeding device 415 adopts the existing OM linear reducer 2LF50N-3 and a motor. The OM linear reducer 2LF50N-3 comes with a lifting rod 4151 that can be lifted and lowered.

[0043] It should be noted that each sub-bin of the label material bin 41 contains folding labels 10 in an unfolded state. During production, the control device controls the turntable 411 to rotate one of the sub-bins to the material picking station, and then the control device controls the lifting device 415 to raise the lifting rod 4151, lift the top folding label 10 in the sub-bin to a predetermined position and stop lifting, and then the labeling robot 42 absorbs the top folding label 10 in the sub-bin and sticks it to the packaging box. After that, each time the labeling robot 42 absorbs a folded label 10, the lifting device 415 will lift it once, and each time the folding label 10 in the sub-bin will be lifted to a predetermined position and stop lifting until the folding labels 10 in the sub-bin are taken out, and then the control device controls the turntable 411 to rotate, and the next sub-bin is transferred to the material picking station, and the action of sucking the folding label 10 is repeated.

[0044] Please refer to Figure 6 In this embodiment, the glue dispensing device 5 is used to spray adhesive on the box gluing part 102. The glue dispensing device 5 includes a glue spraying manipulator and a glue spraying assembly. The glue dispensing device 5 can be a glue dispensing device in the prior art. For example, the glue spraying manipulator includes a frame 51 and a translation module 52. The glue spraying assembly includes a glue dispensing head 33 and an external glue feeding mechanism. The frame 51 is fixed on the platen 1, the translation module 52 is installed on the frame 51, and the glue dispensing head 33 is installed on the translation module 52. The translation module 52 is a linear guide rail in the prior art. The glue dispensing head 33 is moved back and forth between the glue dispensing position and the initial position, and the glue dispensing device 5 in the present application is used in conjunction with the folding mechanism 6. When the folding mechanism 6 guides the flap portion 101 of the folding label 10 to be folded to a predetermined position, the conveyor belt 21 stops, and the glue dispensing head 33 of the glue dispensing device 5 moves to the glue dispensing position, and glue is applied to the box-sticking portion 102. Then the glue dispensing head 33 is reset, and thereafter the conveyor belt 21 is started again, and the folding mechanism 6 continues to complete the guided folding of the flap portion 101 until the flap portion 101 and the box-sticking portion 102 are pasted.

[0045] Please refer to Figure 8 In this embodiment, the folding mechanism 6 is used to fold the flap part 101 and paste the flap part 101 with the box-sticking part 102. Specifically, the folding mechanism 6 includes a folding guide part fixed above the conveyor belt 21, and the folding guide part is used to guide the flap part 101 of the folding label 10 to be pasted with the box-sticking part 102. The folding guide part can be made of a profile, a plate or a plastic part to form a preset shape, and the folding guide part is fixed to the table 1 through a rod or other structural parts. After the folding label 10 is pasted on the packaging box, the conveyor belt 21 transports the packaging box, and the preset shape of the folding guide part is used to fold the flap part 101 of the folding label 10 and paste it with the box-sticking part 102. In this embodiment, the folding mechanism 6 includes a transition linear guide 61 and a folding arc guide 62. The transition linear guide 61 and the folding arc guide 62 are both fixed on the table 1 through a connecting rod and are located above the conveyor belt 21. The transition linear guide 61 is connected to the folding arc guide 62. The direction of conveying the packaging box along the conveyor belt 21 is assumed to be the X-axis, and the direction perpendicular to the X-axis in the horizontal plane is assumed to be the Y-axis. In the Y-axis direction, the vertical distance between the starting point and the end point of the folding arc guide 62 is equal to or greater than the width of the folding label 10 after folding. When the conveyor belt 21 transports the packaging box to the vicinity of the starting point of the transition linear guide 61, the conveyor belt 21 stops, and the labeling robot 42 sticks the box gluing part 102 of the folding label 10 on the packaging box, and then the conveyor belt 21 starts. When the packaging box is transported to the vicinity of the starting point of the folding arc guide 62, the conveyor belt 21 stops again, and the glue dispensing device 5 completes the glue dispensing on the box gluing part 102. The conveyor belt 21 starts, and the packaging box continues to be transported downstream of the conveyor belt 21. When the packaging box passes the folding arc guide 62, the folding arc guide 62 guides the flap part 101 of the folding label 10 to merge and paste with the box gluing part 102.

[0046] It should be noted that the key factor affecting the quality of labeling is the alignment accuracy between the label and the reserved position on the box body. Therefore, a camera, such as a CCD industrial camera, is installed on the labeling robot 42 and is connected to the controller of the labeling machine. At the same time, the box-entering conveyor 21 is provided with a positioning device at the starting point of the transition linear guide 61, such as a positioning cylinder and a matching sensor. When the packaging box moves to the positioning cylinder, the sensor is triggered, and the controller controls the box-entering conveyor 21 to stop. At the same time, the positioning cylinder extends along the Y direction to place the packaging box against the side of the box-entering conveyor 21 to complete the positioning. When labeling, a standard state photo of the folding label 10 is pre-stored in the controller. When the labeling robot 42 takes the label, it first takes a photo of the folding label 10, compares the real-time photo of the folding label 10 with the photo pre-stored in the system, and determines whether the direction of the folding label 10 is consistent with the standard state photo. If it is consistent, the labeling robot 42 moves the folding label 10 to the labeling station and then pastes the folding label 10 on the packaging box.

[0047] Please refer to Figure 7 When the flap part 101 and the adhesive box part 102 of the folding label 10 are combined and pasted, in order to prevent the flap part 101 and the adhesive box part 102 from being separated due to loose adhesion, the folding arc guide rail 62 is provided with a pre-pressing de-bubble member 7. The pre-pressing de-bubble member 7 can adopt a roller-pressing de-bubble structure, or can adopt other structures in which the guiding inclined surface smoothly transitions to the bubble pressing plane. The present embodiment adopts a roller-pressing de-bubble structure. Specifically, the pre-pressing de-bubble member 7 includes a roller frame 71 connected to the folding arc guide rail 62, and the roller frame 71 is provided with a plurality of groups of bubble pressing roller groups 72 for rolling the folding label 10. A single foam pressing roller group 72 includes a swinging member 73, a limiting member 74, an elastic member 75 and a fixing pin 76. The swinging member 73 is a bar-shaped swinging rod. The swinging member 73 can also be a member of other shapes or structures. The fixing pin 76 and the limiting member 74 are both fixed on the roller frame 71. The limiting member 74 is a limiting pin or a limiting bolt. The elastic member 75 can be a tension spring or a compression spring. In this embodiment, the elastic member 75 is a tension spring. In this embodiment, the limiting member 74 is a limiting pin. The swinging member 73 is hinged to the roller frame 71 through a rotating shaft. The A end of the swinging member 73 is equipped with a pressure roller 77 for rolling the folding label 10. One end of the tension spring is connected to the fixing pin 76, and the other end is connected to the B end of the swinging member 73. In addition, the B end of the swinging member 73 can abut against the limiting member 74. Figure 7 In the initial state, the tension spring drives the swing member 73 to rotate in the N direction and makes the swing member 73 abut against the limit pin, and the limit pin prevents the swing member 73 from exceeding the designed rotation range. In production, when the packaging box is pasted with the folding label 10 and passes through the pre-pressing and de-bubble-removing member 7, the folding label 10 is rolled by multiple pressing rollers 77. During rolling, the packaging box forces the swing member 73 to rotate in the S direction, and the tension spring makes the pressing roller 77 maintain sufficient box pressing pressure to achieve the effect of pre-pressing and de-bubble-removing. After the packaging box passes through a single pressing roller 77, under the action of the tension spring, the tension spring makes the B end of the swing member 73 abut against the limit member 74 again.

[0048] Please refer to Figure 6 and Figure 8After the packaging box is pre-pressed and de-bubbled, the folding label 10 needs to be further de-bubbled. Therefore, a de-bubbling device 8 is provided after the pre-pressing and de-bubbling. The de-bubbling device 8 is used to de-bubble the bubbles between the sticking box part 102 and the flip cover part 101 in the folding label 10. Specifically, the de-bubbling device 8 includes a gantry 81 and a de-bubbling driving member 82. The gantry 81 is fixed on the conveyor belt 21. The de-bubbling driving member 82 can be a cylinder, a hydraulic cylinder or an electric push rod. In this embodiment, the de-bubbling driving member 82 is a de-bubbling cylinder, and the de-bubbling cylinder is fixed on the gantry 81. The cylinder is installed with a bubble pressing block, which can be a rubber block, a silicone block or a composite of an aluminum plate and a silicone block. The bubble pressing block in this embodiment is a composite of an aluminum plate and a silicone block. The bubble pressing cylinder is connected to the aluminum plate, and the silicone block is fixed to the aluminum plate. In production, when the packaging box passes through the folding mechanism 6 and the pre-compression debubble part 7 in sequence and reaches the gantry 81, the conveyor belt 21 stops, the bubble pressing cylinder is pressed down, and the silicone block is used to press down the folding label 10 to achieve the debubble effect, and then the bubble pressing cylinder retracts, the conveyor belt 21 restarts, and waits for the next packaging box to be bubbled.

[0049] Please refer to Figure 6 In this embodiment, the labeling machine is also provided with a box discharging device 9 for transferring the packaging box to the next process. The box discharging device 9 can adopt the existing technology. For example, the box discharging device 9 adopts the box discharging conveyor belt in the existing technology, and fixes a box taking robot 91 on the table 1. The box taking robot 91 also adopts the existing technology. The box taking robot 91 can adopt a multi-axis robot, or can adopt a motor-driven KK module to realize the lateral movement of the robot, and a lifting cylinder to realize the lifting of the robot, and a negative pressure suction cup to complete the structure of adsorbing, grasping or releasing the packaging box. When the packaging box after bubble pressing reaches the end of the box discharging conveyor belt, the box taking robot 91 of the box discharging device 9 grabs the packaging box and places it on the box discharging conveyor belt, and uses the box discharging conveyor belt to send the packaging box to the next process.

[0050] The present invention adopts a labeling machine including a conveying device, a gluing device 3, a labeling device, a glue dispensing device 5, a folding mechanism 6, a bubble pressing device 8 and a box output device 9. The conveying device is used to complete the conveyance of the packaging box, the gluing device 3 is used to complete the gluing or sticking of the packaging box surface, the labeling device is used to stick the folding label 10 to the packaging box, the glue dispensing device 5 is used to spray adhesive on the box sticking part 102 of the folding label 10, the folding mechanism 6 is used to complete the folding and sticking of the folding label 10, the bubble pressing device 8 is used to complete the squeezing and de-bubbling of the folding label 10, and finally the box output device 9 is used to send out the labeled packaging box. Compared with the prior art, it can realize automatic labeling of the opening label, improve production efficiency and reduce the defective rate.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A labeling machine, which is suitable for gluing boxes of folding labels, wherein the folding labels include a gluing box portion and a flap portion connected to each other, wherein the gluing box portion is folded and merged with the flap portion; the labeling machine includes a gluing device, characterized in that: The labeling machine further comprises a conveying device, a labeling device, a glue dispensing device and a folding mechanism, wherein the glue dispensing device, the labeling device, the glue dispensing device and the folding mechanism are sequentially distributed along the conveying direction of the conveying device. The gluing device applies or sticks an adhesive layer on the packaging box, the labeling device is provided with a labeling robot that sticks the box sticking part of the label to the packaging box, the glue dispensing device sprays adhesive on the box sticking part, the folding mechanism folds the flap part and sticks the flap part to the box sticking part, and the bubble pressing device presses out bubbles between the box sticking part and the flap part in the folded label.

2. The labeling machine according to claim 1, characterized in that: The folding mechanism comprises a folding guide portion fixed above the conveying device, and the folding guide portion guides the flap portion of the folding label to be pasted to the box pasting portion.

3. The labeling machine according to claim 2, characterized in that: The folding guide part includes a transition linear guide rail and a folding arc guide rail, and the transition linear guide rail is connected to the folding arc guide rail. The direction of conveying the packaging box along the conveying device is assumed to be the X-axis, and the direction perpendicular to the X-axis in the horizontal plane is assumed to be the Y-axis. In the Y-axis direction, the vertical distance between the starting point and the end point of the folding arc guide rail is equal to or greater than the width of the folded label after folding.

4. The labeling machine according to claim 3, characterized in that: The folded arc guide rail is provided with a pre-compression defoaming component.

5. The labeling machine according to claim 4, characterized in that: The pre-pressing and de-bubble removing member comprises a roller frame connected to the folding arc guide rail, and the roller frame is provided with a plurality of groups of bubble pressing roller groups for rolling the folding labels.

6. The labeling machine according to claim 5, characterized in that: The foam pressing roller group includes an oscillating member, a limiting member, an elastic member and a fixing pin. The oscillating member is hinged to the roller frame, and a pressing roller is installed at the A end of the oscillating member. The fixing pin is fixed to the roller frame. One end of the elastic member is connected to the fixing pin, and the other end is connected to the B end of the oscillating member. The limiting member is also fixed to the roller frame and can abut against the B end of the oscillating member.

7. The labeling machine according to claim 6, characterized in that: The elastic member is a tension spring or a compression spring.

8. The labeling machine according to claim 1, characterized in that: The bubble pressing device comprises a gantry and a bubble pressing driving member, wherein the gantry is fixed to the conveying device, the bubble pressing driving member is fixed to the gantry, and the bubble pressing driving member is equipped with a bubble pressing block.

9. The labeling machine according to claim 1, characterized in that: The labeling device includes a label bin and a labeling robot, the labeling robot is provided with a camera assembly, the label bin includes a turntable and a lifting device, the turntable is provided with a plurality of sub-bins and a plurality of lifting holes, one lifting hole corresponds to a sub-bin, the lifting device is provided with a liftable lifting rod, the lifting rod passes through the lifting hole and extends to the corresponding sub-bin.

10. The labeling machine according to claim 1, characterized in that: The glue dispensing device comprises a glue spraying robot and a glue spraying assembly, and the glue spraying assembly is installed on the glue spraying robot.

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