Label-less bottle automated production equipment and its marking method

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. However, the current bottles are recycled after use. However, recycling requires the removal of the labels from the bottles, which requires a large amount of manpower and material effort. Furthermore, removing the labels leaves the label adhesive on the bottle, which generates harmful substances during processing and plays a small role in energy conservation and environmental protection.

[0003] In line with the development philosophy of low-carbon and environmental protection, the concept of "label-less PET bottles" has emerged over the past two years. This means that instead of attaching a label containing the brand logo or product information to the bottle itself, a label is printed on the bottle using laser printing technology. By removing the label, the amount of plastic used in the production process is reduced, recycling bottles is simplified, and the recycling process is reduced. However, existing label-less PET bottles can only print a small amount of information on the bottle itself using a laser machine, and the complete product information can only be printed on the outer packaging, making it impossible to sell the bottle as a single unit, limiting sales channels and failing to meet the demand for large sizes and high production capacity. Summary of the Invention [Means for solving the problem]

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

[0005] In a first aspect, the present application provides an automated label-less bottle production equipment, which adopts the following technical means: an idler disc fixed coaxially to the rotary disk; a motor for rotating each of the idler discs at the bottom; a driven disc fixed coaxially to the rotary disk; a lower pressure assembly for pressing the idler discs against the idler discs; and a laser head for marking the bottle bodies at the rack; the laser heads are arranged in an annular fan shape on one side of the rotary disk, away from the bottle body conveying device.

[0006] With the above configuration, when marking bottle bodies, the bottle body conveying device sequentially conveys the bottle bodies to the driven rotary disk, and the drive mechanism rotates the driven rotary disk and revolves the storage tray around the rotation axis, so that each storage tray sequentially receives the conveyed bottle bodies. When a bottle body reaches its corresponding storage tray, the corresponding lower pressure assembly presses downward, loading the bottle body onto the storage tray. As the driven rotary disk rotates, the bottle bodies sequentially rotate directly in front of the multiple laser heads. The product information to be marked on the bottle is pre-divided into multiple printing modules, and the divided printing modules are assigned to the corresponding laser heads in order of before and after printing. As the bottle body moves toward each laser head, each laser head performs its respective printing job. Furthermore, if the arc-shaped printing position on the bottle needs to be changed, the storage tray can be rotated by the rotation motor to achieve the deviation of the arc-shaped printing position on the bottle body sidewall. After all the bottle marking is completed, the bottle body is conveyed away from the rotating disk by the bottle body conveying device, and the bottle is discharged. The printing area is divided and multiple laser heads are used to mark the bottle body sequentially and continuously, realizing high-productivity marking work on large-sized label-less bottles and contributing to the mass production of label-less bottles.

[0007] Preferably, the bottle body conveying device includes a conveying line arranged 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 turning disk, a supply rail and a discharge rail are respectively provided on both sides of the conveying line and located at the guide plate, the supply rail communicates with the inlet guide notch, and the discharge rail communicates with the outlet guide notch.

[0008] The above configuration allows the conveying line to transport bottle bodies. The bottle bodies first enter the supply rail along the conveying line, and the drive mechanism rotates the supply turntable, which, through the supply turntable and the inlet guide notches on the guide plate, sequentially transfers the bottle bodies at the output end of the supply rail to the storage tray of the driving rotary disc. After all the bottles have been marked, they move toward the discharge turntable, and the drive mechanism simultaneously rotates the discharge turntable, which, through the discharge turntable and the outlet guide notches on the guide plate, sequentially transfers the bottle bodies on the driving rotary disc to the discharge rail, thereby achieving sequential discharge. The supply and discharge of bottle bodies share a single conveying line, reducing energy consumption and maintenance costs. The supply turntable, discharge turntable, and guide plate together act as a bridge between the conveying line and the driving rotary disc, helping to achieve the goal of automatic supply and discharge of bottle bodies on the circular rail of the driving rotary disc.

[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 rotation shaft, a first transmission gear is coaxially fixed to the supply turning disk, and a second transmission gear is coaxially fixed to the discharge turning 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 drive motor rotates, the drive gear rotates, which in turn rotates the transmission ring gear, which in turn rotates the rotating shaft, thereby achieving the purpose of rotating the drive rotating disk. At the same time, the rotation of the drive gear drives and rotates the transmission ring gear, which in turn rotates the first and second transmission gears, thereby rotating the supply rotating disk and the discharge rotating disk. Using a single drive motor as the driving source for rotating the rotating shaft, the supply rotating disk, and the discharge rotating disk reduces motor usage, saves energy, and enables synchronized control of the supply and discharge of bottle bodies on the drive rotating disk.

[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 the curved buffer passage and the inlet guide notch transition smoothly.

[0012] By adopting the above-mentioned configuration, when the bottle bodies are transported between the two supply frames, the supply speed of the bottle bodies is buffered and slowed down through the curved buffer passage, reducing the impact that occurs when the bottles come into contact with the supply turning table, and reducing the possibility of damage or dents being caused to the bottle bodies.It also reduces the possibility of the supply speed being too fast and the supply turning table 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 rotation of the supply turning table, resulting in the bottle bodies getting stuck or clogging.

[0013] Preferably, a distribution rotating disk is rotatably connected to the supply frame on one side of the conveying line, and the outer peripheral surface of the distribution rotating disk is uniformly provided with distribution locking grooves through which only a plurality of single bottle bodies can pass, 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 chance of two or more bottle bodies entering one turn groove on the supply turntable at the same time and further reducing the possibility of bottle bodies getting stuck.

[0015] Preferably, the conveying line is provided with a detection frame, which is located on one side of the supply end of the supply frame, and the detection frame is provided with a detection sensor for detecting whether a bottle body is passing below it; 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, and 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] With this configuration, when the bottle body passes through the curved buffer passage, the centrifugal force it experiences changes throughout its movement, and the resultant force of the bottle body's own gravity and centrifugal force changes throughout its movement, causing the bottle body to sway significantly along the curved buffer passage. In particular, when the bottle body passes through an inflection point in the curved buffer passage, the change in centrifugal force on the bottle body is greatest, making the bottle body prone to tipping over under the influence of the centrifugal force. When the bottle body is fed from the conveying line, adjacent bottle bodies are closely spaced, providing mutual support during movement and reducing the amount of swaying of the bottle body. During the initial feeding stage, the lifting pin is in a low position, and the conveying line starts, with a low initial speed, making it less likely for the bottle body to tip over as it passes through the curved buffer passage.

[0004] After a period of feeding, the speed of the conveying line gradually reaches the rated speed, and the detection sensor detects whether bottle bodies are passing below. If the detection sensor detects that bottle bodies are passing below, the control cylinder keeps the lifting pin in a low position. If the detection sensor detects that bottle bodies are not passing below, it sends an electrical signal. After receiving the electrical signal, the control cylinder raises the lifting pin to a high position, at which time the lifting pin interferes with the circular motion of the position limiting protrusion, thereby restricting the rotation of the distribution turntable and preventing bottle bodies from passing the discharge end of the supply frame. In this way, the number of bottle bodies located between the distribution turntable and the detection sensor can be maintained at a certain value, which is a safe value for passing through the curved buffer passage. If the number of bottle bodies behind the target bottle body is less than this safe value, the distribution turntable will block the target bottle body from passing, reducing the possibility of the bottle body behind the target bottle body tipping over as it passes 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 protrusions is difficult to determine, and there is a possibility that the lifting pin and one of the position limiting protrusions will collide head-on.By installing the guide spherical surface and guide cone surface, the guide spherical surface and the guide cone surface come into contact during the lifting pin's upward movement, and the guiding 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 damage to 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 is fixed to the bottom surface of the distribution rotating disk, the guide spherical surface is arranged at the bottom end of the movable part, and a buffer spring is connected between the movable part and the fixed part.

[0020]

[0003] The above-mentioned configuration solves the problem that the position limiting protrusion cannot be automatically retracted by utilizing the guiding action of the guide cone surface and the guide spherical surface when the top of the cone of the guide cone surface and the lowest point of the guide spherical surface come into direct contact with each other during the lifting pin's ascent. When this problem occurs, the installation of the movable part and the buffer spring allows the buffer spring to compress after the top of the cone of the guide cone surface and the lowest point of the guide spherical surface come into direct contact, thereby buffering the impact of the lifting pin. At the same time, because the distribution turntable does not yet limit rotation, when the bottle body passes through the distribution turntable, it deflects the distribution turntable by a certain angle. During the deflection of the distribution turntable, the fixed part deflects accordingly, and the buffer spring breaks, allowing the movable part and lifting pin to separate, thereby automatically resetting the movable part and realizing the automatic retraction of the lifting pin by the position limiting protrusion. When the control cylinder raises the lifting pin to a higher position, the possibility of the lifting pin and the position limiting protrusion colliding and pressing against each other is further reduced.

[0021] In a second aspect, the present invention provides an automated label-less bottle production equipment and a marking method thereof, which adopts the following technical means: A marking method for label-less bottle automated production equipment, comprising: S1: Place the bottle body to be marked on the conveyor line, put the bottle body into the supply rail, and slow down the speed of the bottle body through a curved buffer passage; The driving mechanism drives and rotates the supply rotating disc, and the bottle bodies are sequentially and continuously conveyed to the storage tray on the driving rotating disc through the operating supply rotating disc and the inlet guide notch, and the lower pressing assembly presses downward to fix the bottle bodies on the storage tray (S2); When the storage tray moves to the position of the corresponding laser head, the corresponding laser head will perform laser marking on the bottle body, and after completing the input of some product information, the rotary motor will move the corresponding storage tray to rotate a certain angle, and at the same time, the driving rotary disk will rotate to rotate the storage tray to the next adjacent laser head, and the next laser head will perform a second additional marking on the bottle body, and the bottle body will pass each laser head in turn, and each laser head will mark the bottle body in turn, until the input of all product information is completed; S3; When the bottle body on which marking has been completed passes through the operating discharge turntable, the discharge turntable detaches the bottle body from the storage tray, and the bottle body after being detached from the storage tray passes through the 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. [Effects 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 fan-shaped distribution, the printing content on the bottle body is divided into multiple printing modules, each printing module is assigned to a laser head, and as the bottle body moves toward each laser head, each laser head performs its own printing job. Furthermore, if the printing position on the arc-shaped surface of the bottle needs to be changed, a rotation motor can be used to rotate the storage tray, thereby achieving the deviation of the printing position on the arc-shaped surface on the side wall of the bottle body. By dividing the printing range and using multiple laser heads to laser mark the bottle body in succession, this enables high-productivity marking of large-sized label-less bottles and is beneficial for the mass production of label-less bottles. By simultaneously matching the second transmission ring gear with the drive gear, first transmission gear, and second transmission gear, When the drive motor rotates, the drive gear rotates, which in turn rotates the transmission ring gear, which in turn rotates the rotary shaft, thereby achieving the purpose of rotating the drive rotary disc. At the same time, the rotation of the drive gear drives and rotates the transmission ring gear, which in turn rotates the first and second transmission gears, thereby rotating the supply rotary disc and the discharge rotary disc. Using a single drive motor as the driving source for rotating the rotary shaft, the supply rotary disc, and the discharge rotary disc reduces motor usage, reduces energy consumption, and enables synchronized control of the supply and discharge of bottle bodies on the drive rotary disc. Third, by installing the distribution turntable, detection sensor, lifting pin, and position limiting protrusion, the number of bottles positioned between the distribution turntable and the detection sensor can be maintained at a certain value, which is a safe value for passing through the curved buffer passage. If the number of bottles behind the target bottle is less than this safe value, the distribution turntable will block the target bottle, reducing the possibility of the bottles behind the target bottle tipping over as they pass through the curved buffer passage. The blocked target bottle and the bottles behind it will wait for the next batch to be produced and will be marked together with the bottles of the next batch, thereby ensuring the stability of the bottles as they pass through the curved buffer passage and ensuring smooth supply of bottles. [Brief explanation 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; [Figure 2] 1 is a structural schematic diagram of a bottle body marking device according to an embodiment of the present invention; [Figure 3] FIG. 2 is a structural schematic diagram of a lower pressing assembly according to an embodiment of the present invention. [Figure 4] 3 is a structural schematic diagram of a conical guide groove according to an embodiment of the present invention; FIG. [Figure 5] 1 is a structural schematic diagram of a bottle body conveying device according to an embodiment of the present invention; [Figure 6] 1 is a structural schematic diagram of a driving mechanism according to an embodiment of the present invention; [Figure 7] 2 is a structural schematic diagram of a supply rail according to an embodiment of the present invention; [Figure 8] 3 is a structural schematic diagram of a distribution wheel and a position limiting protrusion according to an embodiment of the present invention; FIG. [Figure 9] FIG. 2 is a structural schematic diagram of the positional relationship between the control cylinder and the 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 INVENTION

[0025] The present application will be described in more 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 system.

[0027] Referring to Figure 1, the label-less bottle automated production equipment includes a rack 1, on which a bottle body conveying device 2 and a bottle body marking device 3 are provided. 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-transmitted to the bottle body marking device 3, and is used to transport the supply and discharge of bottle bodies.

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

[0029] When marking the bottle bodies, the bottle bodies are sequentially conveyed to the driving rotary disk 32 using the bottle body conveying device 2, and the driving mechanism 11 operates and rotates the driving rotary disk 32, and further causes the storage trays 321 to revolve around the rotation axis 31, so that each storage tray 321 sequentially receives the conveyed 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. As the rotating disk 32 rotates, the bottle bodies rotate sequentially in front of the laser heads 29. The product information to be marked on the bottles is divided into multiple printing modules in advance, and the divided printing modules are assigned to the corresponding laser heads 12 in order of before and after printing. As the bottle bodies move to each laser head 12, each laser head 12 performs its own printing job. Furthermore, if the printing position on the arc-shaped surface of the bottle needs to be changed, the rotating motor 322 can rotate the storage tray 321 to change the printing position on the arc-shaped surface on the side wall of the bottle body. After all the bottles have been marked, the bottle body conveying device 2 is used to sequentially carry the bottle bodies away from the rotating disk 32, and the bottles are completely discharged.

[0030] Furthermore, since each storage tray 321 is independent of the others, its rotation is controlled by the rotation motor 322 connected to it. During marking work, 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 circular sector area formed by the multiple laser heads 12. Here, the supply camera 13 is used to photograph the bottle body and identify its position on the storage tray 321. If the bottle body has a non-cylindrical structure (for example, a rectangular parallelepiped 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 adjust the position of the bottle body on the storage tray 321 before marking, avoiding the edges and patterns of the bottle body. This makes it easier for the first laser head 12 to determine the marking position on the bottle body, and further ensures 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 drives the corresponding storage tray 321 to rotate 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 sampling 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. A lower pressing cover shell 343 is rotatably connected to the bottom end of the lower pressing rod 342, and a conical guide groove 3431 is formed at the bottom end of the lower pressing cover shell 343, the opening radius of which is larger than the radius of the bottle body opening. 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 opening, and the bottle body is clamped and fixed on the storage tray 321. The conical guide groove 3431 allows the bottle body to be positioned 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 that is coaxial with the supply rotating disk 22, and the other side is provided with an outlet guide notch 242 that is coaxial with the discharge rotating disk 23. A supply rail 25 and a discharge rail 26 are respectively installed on both sides of the conveying line 21 and located on the guide plate 24, where the supply rail 25 is connected to the inlet guide notch 241 and the discharge rail 26 is connected to the outlet guide notch 242.

[0034] Since the conveying line 21 has a conveying function, the bottle bodies are first conveyed along the conveying line 21 and enter the supply rail 25. 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 bodies at the output end of the supply rail 25 are sequentially transferred onto the storage tray 321 of the driving rotary disc 32. After all the contents have been marked, the bottle bodies move towards the discharge turntable 23. 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 bodies on the driving rotary disc 32 are sequentially transferred to the discharge rail 26, thereby achieving sequential discharge. The bottle supply and discharge share a single conveying line 21, which reduces energy consumption and maintenance costs. The supply rotating disk 22, discharge rotating disk 23 and guide plate 24 act as a bridge between the conveying line 21 and the driving rotary disk 32, helping to achieve the goal of automatic supply and discharge of the bottle bodies on the circular running rail of the driving rotary disk 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 disk 22, and a second transmission gear is coaxially fixed to the discharge turning disk 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 drive motor 111 rotates, the drive gear 112 rotates, which in turn rotates the transmission ring gear 311, which in turn rotates the rotating shaft 31, thereby rotating the driving rotating disc 32. At the same time, the rotation of the drive gear 112 drives and rotates the transmission ring gear 311, which in turn rotates the first transmission gear 221 and the second transmission gear 231, thereby rotating the supply rotating disc 22 and the discharge rotating disc 23. Using a single drive motor 111 as the driving source for rotating the rotating shaft 31, the supply rotating disc 22, and the discharge rotating disc 23 reduces motor usage, saves energy consumption, and enables synchronized control of the supply and discharge of bottle bodies on the driving rotating disc 32. During marking, the drive motor 111 runs continuously, the supply turntable 22, the drive rotary disc and the discharge turntable 23 are always in operation, and the storage tray 321 on the drive rotary disc 32 revolves around the rotation axis 31 during marking without stopping. The laser head 12 can deflect the emitted laser beam at a certain angle through its built-in laser deflector, and by adjusting the beam position, it can correct the movement of the laser marking position. Furthermore, as the drive rotary disc 32 rotates continuously, the corresponding laser head 12 also marks the bottle body at the same time, and adjacent laser heads 12 can carry out marking work seamlessly, ensuring the continuity of the marking work on the bottle body by each laser head 12, improving the marking efficiency of the bottle body and beneficial to meeting the production demands for high production capacity.

[0037] 7, supply rail 25 includes supply frames 251 disposed on both sides above conveyor line 21. Between the two supply frames 251, a curved buffer passage 252 is formed that fits the outer diameter of the bottle bodies, and curved buffer passage 252 smoothly transitions between inlet guide notch 241. When the bottle bodies are conveyed between the two supply frames 251, curved buffer passage 252 buffers and slows down the supply speed of the bottle bodies, reducing the impact that occurs when the bottles come into contact with supply turning table 22 and the possibility of damage or dents being formed on the bottle bodies. It also reduces the possibility of the supply speed being too fast and causing two or more bottle bodies to enter one turning groove while supply turning table 22 is rotating, or forcibly pushing out multiple bottle bodies that have entered under the rotation of supply turning table 22, resulting in bottle bodies getting stuck or jammed.

[0038] 7 and 8, a distribution rotating disk 27 is rotatably connected to one side of the supply frame 251, and a plurality of distribution locking grooves 271 are uniformly formed on the outer periphery of the distribution rotating disk 27, allowing only single bottle bodies to pass through. 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 closest distance from the rotation center of the distribution rotating disk 27 to the curved buffer passage 252. The bottle bodies that pass through the curved buffer passage 252 are first sorted into the distribution locking grooves 271 of the distribution rotating disk one by one, maintaining a certain distance between adjacent bottle bodies, and then can be fed toward the supply rotating disk under the driving of the conveyor line 21, thereby reducing the chance of two or more bottle bodies entering one groove on the supply rotating disk at the same time and further reducing the possibility of bottle bodies getting stuck.

[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 it. A control cylinder 28 is provided below the distribution turning 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. The bottom end of the distribution turning disk 27 is provided with a plurality of position limiting protrusions 272, which are distributed circumferentially around the rotation center of the distribution turning disk 27. The lifting pin 281 is located on a circular locus surrounded by the plurality of position limiting protrusions 272.

[0040] As the bottle bodies pass through the curved buffer passage 252, the centrifugal force they experience changes throughout their movement, and the resultant force of the bottle body's own gravity and centrifugal force also changes throughout their movement. This causes the bottle bodies to sway significantly along the curved buffer passage 252. The change in centrifugal force on the bottle bodies is particularly large when the bottle bodies pass through the inflection points of the curved buffer passage 252, making the bottle bodies prone to tipping over under the influence of the centrifugal force. As the bottle bodies are fed from the conveying line 21, adjacent bottle bodies are closely spaced, providing mutual support during movement and reducing the amount of swaying of the bottle bodies. During the initial feeding stage, the lifting pin 281 is in a low position, and the conveying line 21 starts moving at a low initial speed, making it less likely for the bottle bodies to tip over as they pass through the curved buffer passage 252. After a period of feeding, 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. If the detection sensor 2111 detects that the bottle body is passing downward, the control cylinder 28 keeps the lifting pin in a low position. If 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 circular motion of the position limiting protrusion 272, thereby restricting the rotation of the distribution turntable 27 and preventing the bottle body from passing the discharge end of the supply frame 251. This allows the number of bottle bodies positioned between the distribution turntable 27 and the detection sensor 2111 to be maintained at a certain value, which is a safe value for passing through the curved buffer passage 262. If the number of bottle bodies behind the target bottle body is less than the safe value, the distribution turntable 27 will block the passage of the target bottle body, reducing the possibility of the bottle bodies behind the target bottle body tipping 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 be marked together with the bottle bodies of the next lot, thereby ensuring the stability of the bottle bodies when passing through the curved buffer passage and ensuring smooth supply of 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, it is difficult to determine the position of the position limiting protrusion 272, and there is a possibility that the lifting pin 281 and one of the position limiting protrusions 272 will collide head-on. Due to the installation of the guide spherical surface 2721 and the guide conical surface 2811, the guide spherical surface 2721 and the guide conical surface 2811 come into contact with each other during the process of lifting pin 281 ascending, 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 guiding action of the guide cone surface 2811 and the guide spherical surface 2721 when the conical 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 after 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, the buffer spring 2724 is compressed and can buffer the impact of the lifting pin 281. At the same time, since the distribution wheel 27 has not yet achieved any restriction on rotation, when the bottle body passes through the distribution wheel 27, the distribution wheel 27 is deflected by a certain angle, and the distribution wheel 27 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 realizing 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 conveying 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 path 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 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 will perform laser marking on the bottle body. After completing the input of some product information, the rotating motor 322 will move the corresponding storage tray 321 to rotate a certain angle, and at the same time, the driving rotary disc 32 will rotate to rotate the storage tray 321 to the next adjacent laser head 12, and the next laser head 12 will perform a second additional marking on the bottle body. Until the input of all product information is completed, the bottle body will pass each laser head 12 in turn, and each laser head 12 will mark the bottle body in turn (S3); When the bottle body on which marking has been completed passes through the operating discharge rotating disk 23, 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 discharge S4.

[0045] It is worth mentioning that in step S3, after all the laser heads 12 have completed the marking process, 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 a texture on its surface, adjusting the position of the bottle body before marking makes it easier for the first laser head 12 to determine the marking position on the bottle body, and the marking position avoids the edges and patterns on the bottle body, further ensuring the marking accuracy and quality on the bottle body.

[0047] In step S3, a horizontal marking or vertical marking method is selected based on the range and dimensions of the marking content to be divided. After the marking content has been divided into modules, the divided content is sequentially input to the corresponding laser heads 12, and each laser head 12 completes the marking work sequentially based on the input information. Here, the divided marking content includes, but is not limited to, one or a combination of numbers, letters, logos, names, QR codes, bar codes, DM codes, information signs, etc., and after being marked by the multiple laser heads 12, the divided signs can be combined into a complete product information sign that wraps the bottle body. In this embodiment, the marking content adopts a vertical divided marking interlocking method and a horizontal divided marking interlocking 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 label-less bottles, which is advantageous for mass production of label-less 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 do not limit the scope of protection of the present application based on them. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in 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 turning table; 221, first transmission gear; 23, discharge supply turning table; 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 turning table; 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 conical 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 facility comprising 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) through a transmission. 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). The plurality of storage trays (321) are The storage trays (321) are arranged in a circumferential array along the circumferential direction of the driving rotary disc (32), and a rotation motor (322) for rotating each storage tray (321) is provided at the bottom of the driving rotary disc (32). A driven rotary disc (33) is coaxially fixed to the rotation shaft (31), and a lower pressing assembly (34) corresponding to the storage tray (321) is provided on the driven rotary disc (33). The rack (1) is provided with laser heads (12) for marking a plurality of bottle bodies, and the plurality of laser heads (12) are arranged in an annular fan shape on one side of the driving rotary disc (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 driving 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 (22). The guide plate (24) is located between the supply disc (22) and the discharge disc (23), and has an inlet guide notch (241) on one side thereof that is coaxial with the supply disc (22), and an outlet guide notch (242) on the other side thereof that is coaxial with the discharge disc (23). A supply rail (25) and an outlet rail (26) are provided on both sides of the guide plate (24) in the conveying line (21), respectively, and the supply rail (25) communicates with the inlet guide notch (241), and the outlet rail (26) communicates with the outlet guide notch (242). The supply rail (25) includes supply frames (251) provided on both sides above the conveying line (21), and a curved buffer passage (252) adapted to the outer diameter of the bottle body is formed between the two supply frames (251), and the bottle body passes through the curved buffer passage (252) adapted to the outer diameter of the bottle body and moves toward the inlet guide notch (241); A distribution rotating disk (27) is rotatably connected to the supply frame (251) on one side of the conveying line (21), and a plurality of distribution locking grooves (271) are evenly provided on the outer circumferential surface of the distribution rotating disk (27) so that only a plurality of single bottle bodies can 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); a control cylinder (28) provided below the distribution turning table (27), the control cylinder (28) being electrically connected to the detection sensor (2111); a lifting pin (281) provided at the output end of the control cylinder (28); a plurality of position limiting protrusions (272) provided at the bottom end of the distribution turning table (27); the plurality of position limiting protrusions (272) being distributed circumferentially around the rotation center of the distribution turning table (27); and the lifting pin (281) being 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 drive mechanism (11) includes a drive motor (111) provided on the rack (1) and a drive gear (112) provided at the output end of the drive motor (111), a transmission ring gear (311) is coaxially fixed to the rotation 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 drive gear (112), the first transmission gear (221), and the second transmission gear (231), respectively.

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

4. The automated label-less bottle 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 table (27), the guide spherical surface (2721) is arranged 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, (S1) placing the bottle body to be marked on the conveying line (21), putting the bottle body into the supply rail (25), and slowing down the speed of the bottle body through the curved buffer passage (252); The driving mechanism (11) drives and rotates the supply rotating disc (22), and the bottle bodies are transported sequentially and continuously to the storage tray (321) on the driving rotating disc (32) through the operating supply rotating disc (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 inputting some product information, the rotation motor (322) drives 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 next adjacent laser head (12), which performs a second additional marking on the bottle body. Until inputting all product information is completed, the bottle body passes each laser head (12) in turn, and each laser head (12) marks the bottle body in turn (S3). When the bottle body on which marking has been completed passes through the operating discharge turntable (23), the discharge turntable (23) detaches the bottle body from the storage tray (321), and the bottle body after detaching from the storage tray (321) passes through the outlet guide notch (242) and enters the discharge rail (26), completing discharge (S4).

6. 6. The marking method for automated label-less bottle production equipment according to claim 5, wherein in step S3, the marking content on the bottle body is divided into modules, and 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.

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