Automatic manufacturing equipment of bottle without label and marking method thereof

Abstract

To meet the demand for marking large bottle surfaces and high production capacity, to achieve mass production of bottles without label, environment protection and reuses, energy saving and reduction of manufacturing costs.SOLUTION: The automatic manufacturing equipment of bottles without label includes a rack on which a bottle body conveying device and a bottle body marking device are provided, in which: the bottle body marking device includes a rotating shaft provided on the rack and a driving rotating disk coaxially fixed to the rotating shaft; the rack is provided with a driving mechanism for driving the rotating shaft; multiple storage trays are rotatably provided on the top of the driving rotating disk; the storage trays are distributed in a circumferential array along the circumferential direction of the driving rotating disk; a self-rotating motor for rotating each storage tray is provided at the bottom of the driving rotating disk; a driven rotating disk is coaxially fixed to the rotating shaft; the driven rotating disk is provided with a lower pressing assembly corresponding to the storage trays; and the rack is provided with a laser head for marking multiple bottle bodies.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present application relates to the technical field of bottle production, and in particular to an automated label-less bottle production equipment and a marking method thereof. [Background technology]

[0002] Currently, existing bottles have heat-shrinkable labels (bearing symbols such as numbers, letters, logos, names, QR codes (registered trademarks), bar codes, DM codes, and information logos) attached to the center using adhesive. The current bottles are recycled after use. However, recycling requires peeling off the labels from the bottles, which requires a large amount of manpower and material effort. Moreover, peeling off the labels leaves the label adhesive on the bottles, which generates harmful substances during processing, and plays a small role in energy conservation and environmental protection.

[0003] In order to meet the development concept of low carbon and environmental protection, the concept of "label-less PET bottle body" has been developed in the past two years, that is, instead of sticking a label with brand logo or product information on the bottle body, a label is printed on the bottle body using laser printer technology, by removing the label, the use of plastic in the production process can be reduced, recycling bottles can be simplified, and the recycling process can be reduced. However, the existing label-less PET bottle body can only mark a small amount of content on the bottle body with a laser machine, and the complete product information can only be written on the outer packaging box, so it cannot be sold as a single bottle body, the sales channels are limited, and it cannot meet the production demand for large size and high production capacity. Summary of the Invention [Means for solving the problem]

[0004] In order to realize large-sized bottle marking with high production capacity, the present application provides an automated label-less bottle production equipment and a marking method thereof.

[0005] In a first aspect, the present application provides an automated label-less bottle production equipment, which adopts the following technical means: An automated label-less bottle production equipment includes a rack, the rack being provided with a bottle body conveying device and a bottle body marking device, the bottle body conveying device being located on one side of the bottle body marking device and being power-connected to the bottle body marking device, the bottle body marking device including a rotating shaft provided on the rack and a driving rotating disk coaxially fixed to the rotating shaft, the rack being provided with a driving mechanism for driving the rotating shaft, a plurality of storage trays are rotatably provided on the top of the driving rotating disk, the plurality of storage trays being distributed in a circumferential array along the circumferential direction of the driving rotating disk, a rotation motor for rotating each storage tray is provided on the bottom of the driving rotating disk, a driven rotating disk is coaxially fixed to the rotating shaft, and a lower pressing assembly corresponding to the storage tray is provided on the driven rotating disk, the rack is provided with laser heads for marking a plurality of bottle bodies, the plurality of laser heads being distributed to form an annular sector shape on one side of the driving rotating disk away from the bottle body conveying device.

[0006] By adopting the above-mentioned configuration, when marking the bottle body, the bottle body is sequentially conveyed to the driving rotary disk by the bottle body conveying device, and the driving mechanism rotates the driving rotary disk, and further revolves the storage tray around the rotation axis, so that each storage tray sequentially receives the conveyed bottle body. When the bottle body reaches the corresponding storage tray, the corresponding lower pressing assembly presses downward to load the bottle body on the storage tray. Then, during the rotation process of the driving rotary disk, the bottle body rotates in front of the multiple laser heads sequentially, and the contents related to the product information to be marked on the bottle are divided into multiple printing modules in advance, and the divided printing modules are assigned to the corresponding laser heads in the order of before and after printing, and when the bottle body moves to each laser head, each laser head performs its own printing work, and when it is necessary to change the arc surface printing position of the bottle, the storage tray can be rotated by the rotation motor to complete the deflection of the arc surface printing position on the side wall of the bottle body. After the bottle marking is completed, the bottle body is conveyed out of the rotating disk by the bottle body conveying device, and the bottle is discharged.The printing range is divided and multiple laser heads are used to perform laser marking on the bottle body in sequence, which realizes high-productivity marking work for large-sized label-less bottles and is useful for mass production of label-less bottles.

[0007] Preferably, the bottle body conveying device includes a conveying line provided on a rack, a supply rotating disk, and a discharge rotating disk, the supply rotating disk and the discharge rotating disk are each rotatably connected to the rack and are located between the conveying line and the driving rotating disk, the drive mechanism is transmission-connected to the supply rotating disk and the discharge rotating disk, a guide plate is straddled above the conveying line and the driving rotating disk, the guide plate is located between the supply rotating disk and the discharge rotating disk, one side of the guide plate is provided with an inlet guide notch arranged coaxially with the supply rotating disk, and the other side is provided with an outlet guide notch arranged coaxially with the discharge rotating disk, a supply rail and a discharge rail are provided on both sides of the conveying line and located on the guide plate, the supply rail communicates with the inlet guide notch, and the discharge rail communicates with the outlet guide notch.

[0008] By adopting the above configuration, the conveying line can convey the bottle body, the bottle body first enters the supply rail through the conveying line, and the driving mechanism rotates the supply turntable, and the bottle body at the output end of the supply rail can be transferred to the storage tray of the driving rotary disk through the supply turntable and the inlet guide notch on the guide plate. After the bottles are all marked, they move toward the discharge turntable, and the driving mechanism simultaneously rotates the discharge turntable, and the bottle bodies on the driving rotary disk can be transferred to the discharge rail through the outlet guide notch on the discharge turntable and the guide plate, so as to realize the sequential discharge. The supply and discharge of the bottle body share a single conveying line, which reduces energy consumption and maintenance costs, and the supply turntable, discharge turntable and guide plate act as a bridge between the conveying line and the driving rotary disk, which helps the bottle body to be automatically supplied and discharged on the circular running rail of the driving rotary disk.

[0009] Preferably, the drive mechanism includes a drive motor provided on the rack and a drive gear provided at the output end of the drive motor, a transmission ring gear is coaxially fixed to the rotating shaft, a first transmission gear is coaxially fixed to the supply rotating disk, and a second transmission gear is coaxially fixed to the discharge rotating disk, and the transmission ring gear is meshed with the drive gear, the first transmission gear, and the second transmission gear, respectively.

[0010] With the above configuration, when the driving motor rotates, the driving gear rotates, which rotates the transmission ring gear, which rotates the rotating shaft, thereby achieving the purpose of rotating the driving rotating disk, and at the same time, the rotation of the driving gear moves and rotates the transmission ring gear, which rotates the first transmission gear and the second transmission gear, thereby rotating the supply rotating disk and the discharge rotating disk. By using one driving motor as the driving source for rotating the rotating shaft, the supply rotating disk and the discharge rotating disk, the motor usage can be reduced, energy consumption can be reduced, and the supply and discharge of the bottle bodies on the driving rotating disk can be synchronously controlled.

[0011] Preferably, the supply rail includes supply frames arranged on both sides above the conveying line, and a curved buffer passage that fits the outer diameter of the bottle body is formed between the two supply frames, and a smooth transition is made between the curved buffer passage and the inlet guide notch.

[0012] By adopting the above-mentioned configuration, when the bottle body is transported between the two supply frames, the supply speed of the bottle body is buffered and decelerated through the curved buffer passage, reducing the impact generated when the bottle comes into contact with the supply turning disk, and reducing the possibility of damage or dents being generated in the bottle body. It also reduces the possibility of the supply speed being too fast and the supply turning disk entering two or more bottle bodies simultaneously in one turning groove while rotating, or the bottle bodies being forcibly pushed out of multiple bottle bodies that have entered under the rotating action of the supply turning disk, resulting in the bottle bodies becoming stuck or clogged.

[0013] Preferably, a distribution rotating disk is rotatably connected to the supply frame on one side of the conveying line, and distribution locking grooves are evenly provided on the outer circumferential surface of the distribution rotating disk so that only a plurality of single bottle bodies can pass through, and the distance from the outermost end of the distribution locking groove to the rotation center of the distribution rotating disk is greater than the shortest distance from the rotation center of the distribution rotating disk to the curved buffer passage.

[0014] By adopting the above-mentioned configuration, the bottle bodies that have passed through the curved buffer passage are first separated one by one by the distribution turntable, and after maintaining a certain distance between adjacent bottle bodies, they can be supplied to the supply turntable under the drive of the conveying line, thereby reducing the occurrence of two or more bottle bodies entering one turn groove on the supply turntable at the same time, and further reducing the possibility of the bottle bodies becoming clogged.

[0015] Preferably, a detection frame is provided on the conveying line, the detection frame is located on one side of the supply end of the supply frame, the detection frame is provided with a detection sensor for detecting whether a bottle body is passing downward, a control cylinder is provided below the distribution turntable, the control cylinder is electrically connected to the detection sensor, a lifting pin is provided at the output end of the control cylinder, a plurality of position limiting protrusions are provided at the bottom end of the distribution turntable, the plurality of position limiting protrusions are distributed circumferentially along the rotation center of the distribution turntable, and the lifting pin is located on a circular locus surrounded by the plurality of position limiting protrusions.

[0016] By adopting the above-mentioned configuration, when the bottle body passes through the curved buffer passage, the centrifugal force received by the bottle body changes throughout the movement, and the resultant force of the gravity of the bottle body itself and the centrifugal force changes throughout the movement, so that the bottle body will have a large swing in the curved buffer passage, especially when the bottle body passes through the inflection point of the curved buffer passage, the change in the centrifugal force of the bottle body is the largest, and the bottle body may be easily tilted under the mutation of the centrifugal force. When the bottle body is supplied from the conveying line, the adjacent bottle bodies are closely adjacent to each other, so that the adjacent bottle bodies play the role of mutual support during the movement, and the swing width of the bottle body can be reduced. At the initial stage of supply, the lifting pin is in a low position, the conveying line starts, and the initial speed of the conveying line is low, so that the bottle body is not easily toppled when passing through the curved buffer passage. After a period of feeding, the speed of the conveying line gradually reaches the rated speed, and the detection sensor detects whether the bottle body passes downward, and when the detection sensor detects that the bottle body passes downward, the control cylinder keeps the lifting pin at a low position at all times, and when the detection sensor detects that the bottle body does not pass downward, it sends an electric signal, and after receiving the electric signal, the control cylinder raises the lifting pin to a high position, and at this time the lifting pin interferes with the circumferential motion of the position limiting protrusion, thereby restricting the rotation of the distribution turntable, and further preventing the bottle body from passing the discharge end of the supply frame. This allows the number of bottle bodies located between the distribution turntable and the detection sensor to be maintained at a certain value, which is the safety value for passing through the curved buffer passage, and when the number of bottle bodies behind the target bottle body is less than the safety value, the distribution turntable blocks the passage of the target bottle body, reducing the possibility of the bottle body behind the target bottle body tipping over when passing through the curved buffer passage. The blocked target bottle body and the subsequent bottle bodies wait for the production of the next lot and are marked together with the bottle bodies of the next lot, thereby ensuring stability when the bottle bodies pass through the curved buffer passage and ensuring smooth supply of the bottle bodies.

[0017] Preferably, the bottom end of the position limiting protrusion is provided with a guide spherical surface, and the top end of the lifting pin is provided with a guide conical surface.

[0018] With the above configuration, when the lifting pin moves upward, the position of the position limiting protrusion is difficult to determine, and there is a possibility that the lifting pin and one of the position limiting protrusions collide head-on.By installing the guide spherical surface and the guide cone surface, the guide spherical surface and the guide cone surface come into contact with each other during the lifting pin's upward movement, and the guide action of the guide cone surface deflects the position limiting protrusion to one side of the lifting pin, reducing the collision and pressing between the lifting pin and the position limiting protrusion when the control cylinder raises the lifting pin to a higher position, and reducing the possibility of damaging the distribution wheel.

[0019] Preferably, the position limiting protrusion includes a fixed part and a movable part arranged from top to bottom, the fixed part being fixed to the bottom surface of the distribution turning plate, the guide spherical surface being arranged at the bottom end of the movable part, and a buffer spring being connected between the movable part and the fixed part.

[0020] By adopting the above-mentioned configuration, the problem that the position limiting protrusion cannot be automatically retreated by utilizing the guiding action of the guide cone surface and the guide sphere surface when the cone top of the guide cone surface and the lowest point of the guide sphere surface contact each other during the lifting pin's ascent can be solved. When the above-mentioned problem occurs, by installing the movable part and the buffer spring, the buffer spring can be compressed after the cone top of the guide cone surface and the lowest point of the guide sphere surface contact each other, and the collision of the lifting pin can be buffered. At the same time, since the distribution turntable has not yet realized the limit on rotation, when the bottle body passes through the distribution turntable, the distribution turntable is deflected by a certain angle, and during the deflection process of the distribution turntable, the fixed part is deflected accordingly, and the buffer spring breaks, and then the movable part and the lifting pin are separated, thereby realizing the automatic reset of the movable part, and the automatic retreat of the lifting pin by the position limiting protrusion is realized, and when the control cylinder raises the lifting pin to a high position, the possibility of the lifting pin and the position limiting protrusion colliding and pressing is further reduced.

[0021] In a second aspect, the present application provides an automated label-less bottle production equipment and a marking method thereof, which adopts the following technical means: A marking method for an automated label-less bottle production equipment, comprising: S1: placing the bottle body to be marked on the conveyor line, putting the bottle body into the supply rail, and slowing down the speed of the bottle body through a curved buffer passage; The driving mechanism drives and rotates the supply rotating disk, and the bottle body is sequentially and continuously conveyed to the storage tray on the driving rotating disk through the operating supply rotating disk and the inlet guide notch, and the lower pressing assembly presses downward to fix the bottle body on the storage tray S2; When the storage tray moves to the position of the corresponding laser head, the corresponding laser head performs laser marking on the bottle body; after the input of some product information is completed, the rotary motor moves the corresponding storage tray to rotate a certain angle, and at the same time, the driving rotary disk rotates to rotate the storage tray to the next adjacent laser head, and the next laser head performs secondary additional marking on the bottle body; until the input of all product information is completed, the bottle body passes each laser head in sequence, and each laser head performs marking on the bottle body in sequence. S3; When the bottle body which has completed marking passes through the discharge turntable which is in operation, the discharge turntable detaches the bottle body from the storage tray, and the bottle body which has been detached from the storage tray passes through an outlet guide notch and enters the discharge rail, completing discharge (S4).

[0022] Preferably, in S3, a marking method of horizontal marking or vertical marking is selected based on the range and dimensions of the marking content to be divided, and after the module division of the marking content is completed, the divided contents are input into the corresponding laser heads in sequence, and each laser head completes the marking work in sequence based on the input information. Effect of the Invention

[0023] As a result of the above, the present application has at least one of the following beneficial technical effects: First, by installing multiple laser heads in a circular sector distribution, the printing content on the bottle body is divided into multiple printing modules, each printing module is assigned to each laser head, and when the bottle body moves to each laser head, each laser head performs its own printing job, and when the bottle arc surface printing position needs to be changed, the rotation motor can be used to rotate the storage plate to complete the deflection of the arc surface printing position on the side wall of the bottle body. The printing range is divided and multiple laser heads are used to laser mark the bottle body in sequence and continuously, which realizes the marking work with high productivity for large size labelless bottles and is useful for mass production of labelless bottles. By simultaneously matching the second transmission ring gear with the drive gear, the first transmission gear, and the second transmission gear, When the driving motor rotates, the driving gear rotates, which rotates the transmission ring gear, which rotates the rotating shaft, thereby achieving the purpose of rotating the driving rotating disk, and at the same time, the rotation of the driving gear drives and rotates the transmission ring gear, which rotates the first transmission gear and the second transmission gear, thereby rotating the supply rotating disk and the discharge rotating disk. By using one driving motor as the driving source for rotating the rotating shaft, the supply rotating disk and the discharge rotating disk, the motor usage can be reduced, energy consumption can be reduced, and the supply and discharge of the bottle bodies on the driving rotating disk can be synchronously controlled. Third, by installing the distribution turntable, the detection sensor, the lifting pin and the position limiting protrusion, the number of bottle bodies located between the distribution turntable and the detection sensor can be maintained at a certain value, which is a safety value for passing through the curved buffer passage, and when the number of bottle bodies behind the target bottle body is less than the safety value, the distribution turntable will block the passage of the target bottle body, reducing the possibility that the bottle bodies behind the target bottle body will tip over when passing through the curved buffer passage. The blocked target bottle body and the following bottle body will wait for the production of the next batch and will be marked together with the bottle bodies of the next batch, thereby ensuring the stability of the bottle bodies when passing through the curved buffer passage and ensuring the smooth supply of the bottle bodies. [Brief description of the drawings]

[0024] [Figure 1] 1 is a schematic diagram of the overall structure of an automated label-less bottle production equipment according to an embodiment of the present invention; [Diagram 2] 1 is a structural schematic diagram of a bottle body marking device according to an embodiment of the present invention; [Diagram 3] FIG. 2 is a structural schematic diagram of a lower pressing assembly according to an embodiment of the present invention. [Figure 4] FIG. 4 is a structural schematic diagram of a conical guide groove according to an embodiment of the present invention; [Diagram 5] 1 is a schematic structural diagram of a bottle body conveying device according to an embodiment of the present invention; [Figure 6] FIG. 2 is a structural schematic diagram of a driving mechanism according to an embodiment of the present invention. [Figure 7] FIG. 2 is a structural schematic diagram of a supply rail according to an embodiment of the present invention; [Figure 8] FIG. 2 is a structural schematic diagram of a distribution wheel and a position limiting protrusion according to an embodiment of the present invention; [Figure 9] FIG. 4 is a structural schematic diagram of the positional relationship between a control cylinder and a distribution rotating disk according to an embodiment of the present invention. [Figure 10] 2 is a flowchart of a marking method for a label-less bottle automated production equipment according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] The present application will be described in further detail below in conjunction with the accompanying drawings 1 to 10.

[0026] As a first aspect, an embodiment of the present application discloses an automated label-less bottle production equipment.

[0027] Referring to Figure 1, the label-less bottle automated production equipment includes a rack 1, and a bottle body conveying device 2 and a bottle body marking device 3 are provided on the rack 1. The bottle body marking device 3 is used to perform marking work on the bottle body. The bottle body conveying device 2 is located on one side of the bottle body marking device 3 and is power-connected to the bottle body marking device 3, and is used to convey the supply and discharge of bottle bodies.

[0028] 1 and 2, the bottle body marking device 3 includes a rotating shaft 31 provided on the rack 1 and a driving rotating disk 32 coaxially fixed to the rotating shaft 31 via spokes, and the rack 1 is provided with a driving mechanism 11 for driving the rotating shaft 31. A plurality of storage trays 321 are rotatably provided on the top of the driving rotating disk 32, and the plurality of storage trays 321 are distributed in a circumferential arrangement along the circumferential direction of the driving rotating disk 32, and a rotation motor 322 for rotating each storage tray is provided on the bottom of the driving rotating disk 32. A driven rotating disk 33 is coaxially fixed to the rotating shaft 31 via spokes, and a lower pressing assembly 34 corresponding to the storage tray 321 is provided on the driven rotating disk 33. A laser head 12 for marking a plurality of bottle bodies is provided on the rack 1, and the plurality of laser heads 12 are distributed to form an annular fan shape on one side of the driving rotating disk 32 away from the bottle body conveying device 2. In this embodiment, twelve laser heads 12 are provided, but the number of laser heads can be increased or decreased as appropriate depending on the actual marking contents.

[0029] When marking the bottle bodies, the bottle bodies are sequentially transported to the driven rotating disk 32 using the bottle body transporting device 2, and the driving mechanism 11 moves and rotates the driven rotating disk 32, and further revolves the storage tray 321 around the rotation axis 31, so that each storage tray 321 sequentially receives the transported bottle bodies. When a bottle body reaches the corresponding storage tray 321, the corresponding lower pressing assembly 34 presses it downward, and the bottle body is loaded onto the storage tray. Then, during the rotation of the driving rotary disk 32, the bottle body rotates in sequence directly in front of the multiple laser heads 29, the contents related to the product information to be marked on the bottle are divided into multiple printing modules in advance, and the divided printing modules are assigned to the corresponding laser heads 12 in the order of before and after printing, and when the bottle body moves to each laser head 12, each laser head 12 performs its own printing job, and if it is necessary to change the printing position of the arc surface of the bottle, the rotation motor 322 can rotate the storage tray 321 to complete the deflection of the printing position of the arc surface on the side wall of the bottle body. After the marking of all the bottles is completed, the bottle body conveying device 2 is used to carry the bottle bodies out of the driving rotary disk 32 in sequence, and the discharge of the bottles is completed.

[0030] In addition, since each storage tray 321 is independent of the others, the rotation of each tray is controlled by the rotation motor 322 connected thereto. During the marking operation, adjacent laser heads 12 may mark the contents of adjacent areas, or marking across the contents of areas may be realized, with the horizontal span being determined by the rotation angle of the corresponding rotation motor 322.

[0031] Referring to FIG. 1, the rack 1 is equipped with a supply camera 13 and a discharge camera 14, which are respectively located on both sides of the annular sector area formed by the multiple laser heads 12, where the supply camera 13 is used to photograph the bottle body and identify its position on the storage tray 321, and if the bottle body has a non-cylindrical structure (e.g., a rectangular structure or other irregular structure) or has texture on the surface of the bottle body, the rotation motor 322 can easily adjust the angle to the corresponding storage tray 321, and before marking, the bottle body on the storage tray 321 can perform positioning adjustment to avoid the edges and patterns of the bottle body, making it easier for the first laser head 12 to determine the marking position of the bottle body, and further ensuring the marking accuracy of the mark on the bottle body. The discharge camera 14 is used to detect markings on the bottle body. When a marking is detected on the bottle body, the corresponding rotation motor 322 moves the corresponding storage tray 321 to rotate it in the circumferential direction, and the discharge camera 14 detects the entire circumferential surface of the bottle body and performs photo matching and AI recognition. If a defective product is detected, the defective product is extracted in a subsequent random inspection process.

[0032] 2, 3 and 4, the lower pressing assembly 34 includes a lower pressing drive source 341 fixed to the driven rotary disk 33, and a lower pressing rod 342 coaxially fixed to the output end of the lower pressing drive source 341, the lower pressing cover shell 343 is rotatably connected to the bottom end of the lower pressing rod 342, the bottom end of the lower pressing cover shell 343 is opened with a conical guide groove 3431, the opening end radius of the conical guide groove 3431 is larger than the radius of the bottle body mouth. When the bottle body is transferred onto the storage tray 321 by the bottle body conveying device 2, the lower pressing rod 342 corresponding to the lower pressing drive source 341 is driven until the lower pressing cover shell 343 abuts against the bottle body mouth, and the bottle body is clamped and fixed on the storage tray 321. The conical guide groove 3431 allows the bottle body to be centered, reducing the possibility that the bottle will be seated off-center on the storage tray 321, and improving the accuracy of the marking operation by the laser head 12. In this embodiment, the downward pressure drive source 341 may be a cylinder, a hydraulic cylinder, or an electric cylinder.

[0033] Referring to Figures 2 and 5, the bottle body conveying device 2 includes a conveying line 21 provided on the rack 1, a supply rotating disk 22, and a discharge rotating disk 23, the supply rotating disk 22 and the discharge rotating disk 23 are each rotatably connected to the rack 1 and are located between the conveying line 21 and the driving rotating disk 32, and the drive mechanism 11 is transmission connected to the supply rotating disk 22 and the discharge rotating disk 23. A guide plate 24 is installed above the conveying line 21 and the driving rotating disk 32, and is located between the supply rotating disk 22 and the discharge rotating disk 23. One side of the guide plate 24 is provided with an inlet guide notch 241 arranged coaxially with the supply rotating disk 22, and the other side is provided with an outlet guide notch 242 arranged coaxially with the discharge rotating disk 23. A supply rail 25 and a discharge rail 26 are provided on both sides of the conveying line 21 and located on the guide plate 24, where the supply rail 25 communicates with the inlet guide notch 241 and the discharge rail 26 communicates with the outlet guide notch 242.

[0034] Since the conveying line 21 has a conveying function, the bottle body first enters the supply rail 25 through the conveying of the conveying line 21, and at the same time, the driving mechanism 11 rotates the supply turntable 22, and through the supply turntable 22 and the inlet guide notch 241 on the guide plate 24, the bottle body at the output end of the supply rail 25 can be sequentially transferred onto the storage tray 321 of the driving rotary disc 32. After the marking of all the contents is completed, the bottle body moves towards the discharge turntable 23, and at the same time, the driving mechanism 11 rotates the discharge turntable 23, and through the supply turntable 22 and the outlet guide notch 242 on the guide plate 24, the bottle body on the driving rotary disc 32 can be sequentially moved to the discharge rail 26, thereby realizing sequential discharge. The bottle supply and discharge share a single conveying line 21, which reduces energy consumption and maintenance costs. The supply turntable 22, discharge turntable 23 and guide plate 24 act as a bridge between the conveying line 21 and the driving rotary disc 32, and help to achieve the purpose of automatic supply and discharge of the bottle bodies on the circular running rail of the driving rotary disc 32.

[0035] 2, 5 and 5, the drive mechanism 11 includes a drive motor 111 provided on the rack 1 and a drive gear 112 provided on the output end of the drive motor 111, a transmission ring gear 311 is coaxially fixed to the rotating shaft 31, a first transmission gear 221 is coaxially fixed to the underside of the supply turning plate 22, and a second transmission gear is coaxially fixed to the discharge turning plate 23, and the transmission ring gear 311 is meshed with the drive gear 112, the first transmission gear 221 and the second transmission gear 231, respectively.

[0036] When the driving motor 111 rotates, the driving gear 112 rotates, which rotates the transmission ring gear 311, which rotates the rotating shaft 31, thereby achieving the purpose of rotating the driving rotating disk 32, and at the same time, the rotation of the driving gear 112 moves and rotates the transmission ring gear 311, which rotates the first transmission gear 221 and the second transmission gear 231, thereby rotating the supply rotating disk 22 and the discharge rotating disk 23. By using one driving motor 111 as the driving source for rotating the rotating shaft 31, the supply rotating disk 22 and the discharge rotating disk 23, the motor usage can be reduced, energy consumption can be reduced, and the supply and discharge of the bottle bodies on the driving rotating disk 32 can be synchronously controlled. During marking, the driving motor 111 runs continuously, the supply rotating disk 22, the driving rotating disk and the discharge rotating disk 23 are always in operation, and the storage tray 321 on the driving rotating disk 32 revolves around the rotation axis 31 during marking and does not stop; the laser head 12 can deflect the emitted laser beam by a certain angle through its built-in laser deflector, and correct the movement of the laser marking position by adjusting the beam position; further, while the driving rotating disk 32 rotates continuously, the corresponding laser head 12 also marks the bottle body at the same time, and the adjacent laser heads 12 can perform marking work without any gaps, which ensures the continuity of the marking work on the bottle body by each laser head 12, improves the marking efficiency of the bottle body, and is beneficial to meet the production demand for high production capacity.

[0037] 7, the supply rail 25 includes supply frames 251 provided on both sides above the conveying line 21, and a curved buffer passage 252 that fits the outer diameter of the bottle body is formed between the two supply frames 251, and the curved buffer passage 252 and the inlet guide notch 241 smoothly transition. When the bottle body is conveyed between the two supply frames 251, the supply speed of the bottle body is buffered and decelerated through the curved buffer passage 252, reducing the impact generated when the bottle and the supply turning table 22 come into contact, reducing the possibility of damage or dents being generated in the bottle body, and reducing the possibility of the supply speed being too fast and the supply turning table 22 entering two or more bottle bodies at the same time in one turning groove while rotating, or forcibly pushing out the bottle bodies that have entered under the rotation action of the supply turning table 22, or the bottle bodies being stuck or clogged.

[0038] 7 and 8, the distribution rotating disk 27 is rotatably connected to one side of the supply frame 251, and the outer circumferential surface of the distribution rotating disk 27 is uniformly provided with distribution locking grooves 271 for only a plurality of single bottle bodies to pass through, and the distance from the outermost end of the distribution locking groove 271 to the rotation center of the distribution rotating disk 27 is greater than the shortest distance from the rotation center of the distribution rotating disk 27 to the curved buffer passage 252. The bottle bodies that have passed through the curved buffer passage 252 are first separated into the distribution locking grooves 271 of the distribution rotating disk one by one, and the adjacent bottle bodies are kept at a certain interval, and then can be fed toward the supply rotating disk under the driving of the conveyor line 21, thereby reducing the simultaneous entry of two or more bottle bodies into one groove on the supply rotating disk, and further reducing the possibility of bottle body clogging.

[0039] 7, 8 and 9, the conveying line 21 is provided with a detection frame 211, which is located on one side of the supply end of the supply frame 251. The detection frame 211 is provided with a detection sensor 2111 for detecting whether a bottle body is passing below. A control cylinder 28 is provided below the distribution rotating disk 27, and the control cylinder 28 is electrically connected to the detection sensor 2111. A lifting pin 281 is provided at the output end of the control cylinder 28, and a plurality of position limiting protrusions 272 are provided at the bottom end of the distribution rotating disk 27. The plurality of position limiting protrusions 272 are distributed circumferentially along the rotation center of the distribution rotating disk 27, and the lifting pin 281 is located on a circular locus surrounded by the plurality of position limiting protrusions 272.

[0040] When the bottle body passes through the curved buffer passage 252, the centrifugal force received by the bottle body changes throughout the movement, and the resultant force of the gravity of the bottle body itself and the centrifugal force changes throughout the movement, so that the bottle body will have a large swing in the curved buffer passage 252. Especially when the bottle body passes through the inflection point of the curved buffer passage 252, the change in the centrifugal force of the bottle body is the largest, and the bottle body may be easily tilted under the variation of the centrifugal force. When the bottle body is supplied from the conveying line 21, the adjacent bottle bodies are closely adjacent to each other, so that the adjacent bottle bodies play the role of mutual support during the movement, and the swing width of the bottle body can be reduced. At the initial stage of supply, the lifting pin 281 is in a low position, the conveying line 21 starts, and the initial speed of the conveying line 21 is low, so that the bottle body is not easily toppled when passing through the curved buffer passage 252. After a period of supply, the speed of the conveying line 21 gradually reaches the rated speed, and the detection sensor 2111 detects whether the bottle body is passing downward. When the detection sensor 2111 detects that the bottle body is passing downward, the control cylinder 28 keeps the lifting pin in a low position at all times. When the detection sensor 2111 detects that the bottle body is not passing downward, it sends an electrical signal. After receiving the electrical signal, the control cylinder 28 raises the lifting pin 281 to a high position. At this time, the lifting pin 281 interferes with the circumferential motion of the position limiting protrusion 272, thereby restricting the rotation of the distribution rotating disk 27, and further preventing the bottle body from passing the discharge end of the supply frame 251. In this way, the number of bottle bodies located between the distribution rotating disk 27 and the detection sensor 2111 can be maintained at a certain value, which is a safety value for passing through the curved buffer passage 262, and if the number of bottle bodies behind the target bottle body is less than the safety value, the distribution rotating disk 27 will block the passage of the target bottle body, reducing the possibility that the bottle bodies behind the target bottle body will tip over when passing through the curved buffer passage 252. The blocked target bottle body and the following bottle bodies will wait for the production of the next lot and will be marked together with the bottle bodies of the next lot, thereby ensuring the stability of the bottle bodies when they pass through the curved buffer passage and ensuring smooth supply of the bottle bodies.

[0041] 8, a guide spherical surface 2721 is provided at the bottom end of the position limiting protrusion 272, and a guide conical surface 2811 is provided at the top end of the lifting pin 281. When the lifting pin 281 moves upward, the position of the position limiting protrusion 272 is difficult to determine, and there is a possibility that the lifting pin 281 and one of the position limiting protrusions 272 collide head-on. Due to the installation of the guide spherical surface 2721 and the guide conical surface 2811, during the lifting pin 281 ascending process, the guide spherical surface 2721 and the guide conical surface 2811 come into contact with each other, and the guiding action of the guide conical surface 2811 deflects the position limiting protrusion 272 to one side of the lifting pin 281. When the control cylinder 28 raises the lifting pin 281 to a higher position, the collision and pressure between the lifting pin 281 and the position limiting protrusion 272 is reduced, and the possibility of damage to the distribution wheel 27 is reduced.

[0042] 8, the position limiting protrusion 272 includes a fixed part 2722 and a movable part 2723 provided from top to bottom, the fixed part 2722 is fixed to the bottom surface of the distribution rotating disk 27, the guide spherical surface 2721 is provided at the bottom end of the movable part 2723, and a buffer spring is connected between the movable part 2723 and the fixed part 2722. By adopting the above-mentioned configuration, it is possible to solve the problem that the position limiting protrusion 272 cannot be automatically retracted by utilizing the guide action of the guide cone surface 2811 and the guide spherical surface 2721 when the cone top of the guide cone surface 2811 and the lowest point of the guide spherical surface 2721 come into direct contact with each other while the lifting pin 281 is rising. When the above problem occurs, the movable part 2723 and the buffer spring 2724 are installed, and when the top of the cone of the guide cone surface 2811 and the lowest point of the guide spherical surface 2721 come into direct contact with each other, the buffer spring 2724 is compressed, and the impact of the lifting pin 281 is buffered. At the same time, the distribution wheel 27 has not yet realized the limit on rotation, so when the bottle body passes through the distribution wheel 27, the distribution wheel 27 is deflected by a certain angle to prevent the distribution wheel 27 from colliding with the bottle body. During the deflection process, the fixed part 2722 deflects accordingly, and the buffer spring 2724 breaks, causing the movable part 2723 and the lifting pin 281 to separate, thereby realizing automatic resetting of the movable part 2723 and automatic retraction of the lifting pin 281 by the position limiting protrusion 272. When the control cylinder 28 raises the lifting pin 281 to a higher position, the possibility of the lifting pin 281 and the position limiting protrusion 272 colliding and pressing against each other is further reduced.

[0043] In a second aspect, an embodiment of the present application discloses an automated label-less bottle production equipment and a marking method thereof.

[0044] Referring to FIG. 10, an embodiment of the present application discloses an automated label-less bottle production equipment and a marking method thereof, A bottle body to be marked is placed on the conveyor line 21, the bottle body is put into the supply rail 25, and the speed of the bottle body is slowed down through the curved buffer passage 252 (S1); The driving mechanism 11 drives and rotates the supply rotating disk 22, and the bottle bodies are sequentially and continuously conveyed to the storage tray 321 on the driving rotating disk 23 through the operating supply rotating disk 22 and the inlet guide notch 241, and the lower pressing assembly 34 presses downward to fix the bottle bodies to the storage tray 321 (S2); When the storage tray 321 moves to the position of the corresponding laser head 12, the corresponding laser head 12 performs laser marking on the bottle body. After the input of some product information is completed, the rotating motor 322 moves the corresponding storage tray 321 to rotate a certain angle, and at the same time, the driving rotary disk 32 rotates to rotate the storage tray 321 to the position of the next adjacent laser head 12, and the next laser head 12 performs a second additional marking on the bottle body. Until the input of all product information is completed, the bottle body passes each laser head 12 in sequence, and each laser head 12 performs marking on the bottle body in sequence (S3); When the bottle body which has been marked passes the discharge rotating disk 23 in operation, the discharge rotating disk 23 detaches the bottle body from the storage tray 321, and the bottle body after being detached from the storage tray 321 passes through the outlet guide notch 242 and enters the discharge rail 26, completing the discharge S4.

[0045] It is worth mentioning that in step S3, after all the laser heads 12 complete the marking work, they must inspect the final marking information on the bottle body to ensure the marking quality of the bottle body.

[0046] In addition, if the bottle body has a non-cylindrical structure or has texture on the surface of the bottle body, adjusting the positioning of the bottle body before marking can make it easier for the first laser head 12 to determine the marking position on the bottle body, and the marking position can avoid the edges and patterns of the bottle body, and further ensure the marking accuracy and marking quality of the bottle body.

[0047] In step S3, a marking method of horizontal marking or vertical marking is selected according to the range and dimensions of the marking content to be divided, and after the module division of the marking content is completed, the divided contents are input into the corresponding laser heads 12 in sequence, and each laser head 12 completes the marking work in sequence according to the input information. Here, the divided marking contents include, but are not limited to, one or a combination of multiple marks such as numbers, letters, LOGO, name, QR code, bar code, DM code, information mark, etc., and the divided marks can be combined into a complete product information mark that wraps the bottle body after being marked by multiple laser heads 12. In this embodiment, the marking contents adopt a vertical division marking fitting method and a horizontal division marking fitting method.

[0048] In the above bottle body production method, by using multiple laser heads 12 to sequentially and continuously laser mark the bottle body by dividing the printing range, it is possible to realize highly productive marking work for large-sized labelless bottles, which is advantageous for mass production of labelless bottles, and the number of laser heads can be adaptively increased or decreased based on the actual marking content.

[0049] The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited based on these embodiments. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included within the scope of protection of the present application. [Explanation of symbols]

[0050] 1, rack; 11, drive mechanism; 111, drive motor; 112, drive gear; 12, laser head; 13, supply camera; 14, discharge camera; 2, bottle body conveying device; 21, conveying line; 211, detection frame; 2111, detection sensor; 22, supply rotating plate; 221, first transmission gear; 23, discharge supply rotating plate; 231, second transmission gear; 24, guide plate; 241, inlet guide notch; 242, outlet guide notch; 25, supply rail; 251, supply frame; 252, curved buffer passage; 26, discharge rail; 27, distribution rotating plate; 271, distribution locking groove; 272, position limiting protrusion; 2721, guide spherical surface; 2722, fixed part; 2723, movable part; 2724, buffer spring; 28, control cylinder; 281, lifting pin; 2811, guide cone surface; 3, bottle body marking device; 31, rotating shaft; 311, transmission ring gear; 32, driving rotating disc; 321, storage tray; 322, rotating motor; 33, driven rotating disc; 34, lower pressure assembly; 341, lower pressure driving source; 342, lower pressure rod; 343, lower pressure cover shell; 3431, conical guide groove.

Claims

1. An automated label-less bottle production equipment including a rack (1), The rack (1) is provided with a bottle body conveying device (2) and a bottle body marking device (3), the bottle body conveying device (2) is located on one side of the bottle body marking device (3) and is connected to the bottle body marking device (3), the bottle body marking device (3) includes a rotating shaft (31) provided on the rack (1) and a driving rotating disk (32) coaxially fixed to the rotating shaft (31), the rack (1) is provided with a driving mechanism (11) for driving the rotating shaft (31), a plurality of storage trays (321) are rotatably provided on the top of the driving rotating disk (32), and the plurality of storage trays (321) are The storage trays (321) are arranged in a circumferential arrangement along the circumferential direction of the driving rotating disk (32), a rotating motor (322) for rotating each storage tray (321) is provided at the bottom of the driving rotating disk (32), a driven rotating disk (33) is coaxially fixed to the rotating shaft (31), and a lower pressing assembly (34) corresponding to the storage tray (321) is provided on the driven rotating disk (33), and a laser head (12) for marking a plurality of bottle bodies is provided on the rack (1), and the plurality of laser heads (12) are arranged in a circular sector shape on one side of the driving rotating disk (32) away from the bottle body conveying device (2); The bottle body conveying device (2) includes a conveying line (21) provided on a rack (1), a supply rotating disk (22), and a discharge rotating disk (23). The supply rotating disk (22) and the discharge rotating disk (23) are rotatably connected to the rack (1), respectively, and are located between the conveying line (21) and a driving rotating disk (32). The drive mechanism (11) is connected to the supply rotating disk (22) and the discharge rotating disk (223). A guide plate (24) is provided above the conveying line (21) and the driving rotating disk (32). The guide plate (24) is connected to the supply rotating disk (223). The guide plate (24) is located between a plate (22) and a discharge rotating plate (23), and on one side of the guide plate (24) is provided an inlet guide notch (241) that is provided coaxially with the supply rotating plate (22), and on the other side is provided an outlet guide notch (242) that is provided coaxially with the discharge rotating plate (23). On both sides of the conveying line (21) and located on the guide plate (24), a supply rail (25) and a discharge rail (26) are provided, respectively, and the supply rail (25) communicates with the inlet guide notch (241), and the discharge rail (26) communicates with the outlet guide notch (242). The supply rail (25) includes supply frames (251) installed on both sides above the conveying line (21), and a curved buffer passage (252) that fits the outer diameter of the bottle body is formed between the two supply frames (251), and the curved buffer passage (252) and the inlet guide notch (241) smoothly transition from each other. A distribution rotating disk (27) is rotatably connected to the supply frame (251) on one side of the conveying line (21), and a distribution locking groove (271) for allowing only a plurality of single bottle bodies to pass through is evenly provided on the outer circumferential surface of the distribution rotating disk (27), and the distance from the outermost end of the distribution locking groove (271) to the rotation center of the distribution rotating disk (27) is greater than the shortest distance from the rotation center of the distribution rotating disk (27) to the curved buffer passage (252); a detection frame (211) is provided on the conveying line (21), the detection frame (211) is located on one side of the supply end of a supply frame (251), the detection frame (211) is provided with a detection sensor (2111) for detecting whether a bottle body is passing below it, a control cylinder (28) is provided below the distribution turning table (27), the control cylinder (28) is electrically connected to the detection sensor (2111), a lifting pin (281) is provided at the output end of the control cylinder (28), a plurality of position limiting protrusions (272) are provided at the bottom end of the distribution turning table (27), the plurality of position limiting protrusions (272) are distributed circumferentially around the rotation center of the distribution turning table (27), and the lifting pin (281) is located on a circular locus surrounded by the plurality of position limiting protrusions (272).

2. 2. The label-less bottle automated production equipment according to claim 1, wherein the driving mechanism (11) includes a driving motor (111) provided on the rack (1) and a driving gear (112) provided at an output end of the driving motor (111), a transmission ring gear (311) is coaxially fixed to the rotating shaft (31), a first transmission gear (221) is coaxially fixed to the supply rotating disk (22), and a second transmission gear (231) is coaxially fixed to the discharge rotating disk (23), and the transmission ring gear (311) is meshed with the driving gear (112), the first transmission gear (221), and the second transmission gear (231), respectively.

3. The label-less bottle automated production equipment according to claim 1, characterized in that a guide spherical surface (2721) is provided at the bottom end of the position limiting protrusion (272), and a guide conical surface (2811) is provided at the top end of the lifting pin (281).

4. The label-less bottle automated production equipment described in claim 3, characterized in that the position limiting protrusion portion (272) includes a fixed portion (2722) and a movable portion (2723) arranged from top to bottom, the fixed portion (2722) is fixed to the bottom surface of the distribution rotating disk (27), the guide spherical surface (2721) is provided at the bottom end of the movable portion (2723), and a buffer spring (2724) is connected between the movable portion (2723) and the fixed portion (2722).

5. A marking method for the label-less bottle automated production equipment according to any one of claims 2 to 4, comprising: A bottle body to be marked is placed on a conveying line (21), the bottle body is put into a supply rail (25), and the speed of the bottle body is slowed down through a curved buffer passage (252) (S1); The driving mechanism (11) drives and rotates the supply rotating disk (22), and the bottle bodies are sequentially and continuously conveyed to the storage tray (321) on the driving rotating disk (32) through the operating supply rotating disk (22) and the inlet guide notch (241), and the lower pressing assembly (34) presses downward to fix the bottle bodies on the storage tray (321); S2; When the storage tray (321) moves to the position of the corresponding laser head (12), the corresponding laser head (12) performs laser marking on the bottle body; after the input of some product information is completed, the rotating motor (322) moves the corresponding storage tray (321) to rotate a certain angle, and at the same time, the driving rotating disk (32) rotates to rotate the storage tray (321) to the next adjacent laser head (12), and the next laser head (12) performs secondary additional marking on the bottle body; until the input of all product information is completed, the bottle body passes each laser head (12) in sequence, and each laser head (12) performs marking on the bottle body in sequence (S3); and (S4) when the bottle body for which marking has been completed passes through the discharge turntable (23) in operation, the discharge turntable (23) detaches the bottle body from the storage tray (321), and the bottle body after being detached from the storage tray (321) passes through the outlet guide notch (242) and enters the discharge rail (26), completing discharge.

6. The marking method for automated label-less bottle production equipment according to claim 5, characterized in that in S3, the marking content on the bottle body is divided into modules, the divided marking content is input to the corresponding laser head (12) in sequence, and the laser head (12) selects a marking method of horizontal marking or vertical marking based on the divided marking range and dimensions.

Images