WO2015117541A1

WO2015117541A1 - Food product laser marker device

Info

Publication number: WO2015117541A1
Application number: PCT/CN2015/071976
Authority: WO
Inventors: 柳超
Original assignee: 柳超
Priority date: 2014-02-10
Filing date: 2015-01-30
Publication date: 2015-08-13
Also published as: CN103753966A; CN103753966B; CN105555541A; CN105555541B

Abstract

A food product laser marker device, comprising a laser marker (1), a magnetic fluid lifting/lowering device (2), a conveyor (3), and a controller (4); the laser marker (1) comprises a main controller (5), a laser power supply (6), a cooling system (7), an optical system (8), and a control system (9); the magnetic fluid lifting/lowering device (2) comprises a container (10), a floating body (11), a guide rod (12), a magnetic fluid (13), and an electromagnetic coil (14); the controller (4) comprises a distance measuring sensor (22), a limit sensor (23), and a positioning sensor (24). The food product laser marker device utilizes a laser print head to print a laser label at a printing position on a food product, thereby improving anti-counterfeiting effectiveness; at the same time, the optical system of the laser marker is suspended on the magnetic fluid, thereby reducing the effect of vibration on the optical system.

Description

Food laser marking machine

Technical field

The invention relates to a food laser marking machine device.

Background technique

At present, many foods need to have labels as brand or anti-counterfeiting labels; since printing ink directly on food, or printing ink directly on food will affect the hygiene and safety of food; if using laser to print brand or anti-counterfeiting labels directly In food, the anti-counterfeiting effect can be improved. A food laser marking machine device has become a need for food manufacturers to print food labels.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a food laser marking machine device for food label printing to improve the anti-counterfeiting effect of the food label.

The technical solution adopted by the invention is: the food laser marking machine device comprises a laser marking machine, a magnetic fluid lifting device, a conveyor and a controller; the laser marking machine comprises a main control machine, a laser power supply, a cooling system, and an optical device. The system and the control system; the magnetic fluid lifting device comprises a container, a floating body, a guiding rod, a magnetic fluid and an electromagnetic coil, the base of the laser marking machine and the outer casing of the container are connected with the frame of the conveyor, and the floating body and the magnetic fluid are located in the container The electromagnetic coil is arranged on the container, the guide hole is arranged in the middle of the container, the guide rod is located in the guide hole, and a sealing member is arranged between the guide rod and the guide hole, the upper end of the guide rod is connected with the floating body, and the lower end of the guide rod is lasered The optical system connection of the standard machine is used to control the lifting and lowering of the optical system, and to control the distance from the laser head of the optical system to the food, and reduce the influence of the vibration on the optical system; the conveyor includes a driving wheel, a motor, a passive wheel and a conveyor belt. The motor is connected with the driving wheel, the conveyor belt is connected with the driving wheel and the driven wheel; the controller comprises a distance measuring sensor, a limit sensor and a positioning sensor The distance measuring sensor and the positioning sensor are located above the conveyor belt, and the distance measuring sensor and the positioning sensor are mounted on the base of the laser marking machine on the side of the passive wheel; the limit sensor is located above the conveyor belt, and the limit sensor is installed beside the laser head On the base of the laser marking machine, the distance from the distance measuring sensor to the positioning sensor is equal to the distance from the laser head to the limit sensor; the controller passes the control line and the control system, the electromagnetic coil, the motor, the distance measuring sensor, and the limit sensor. And positioning sensor connections.

When the food laser marking machine is working, the controller is used to control the operation of the conveyor, and the food is placed on the conveyor belt so that the direction of the printing surface is upward; when the food runs to the detection position below the positioning sensor, the positioning sensor The signal is transmitted to the controller, and the controller controls the distance measuring sensor to detect the position signal of the food printing surface below the measuring sensor, and the distance measuring sensor transmits the position signal of the food printing surface detected on the food printing surface to the controller; when the food is transported When the belt is sent to the limit position of the limit sensor, the limit sensor transmits the actual position signal of the food to the controller, and the controller controls the conveyor to stop running; meanwhile, the controller controls the voltage of the input electromagnetic coil, and uses the control electromagnetic coil. The voltage is used to control the magnetic field strength of the electromagnetic coil, the magnetic field of the container is magnetized by the magnetic field, the density of the magnetic fluid is changed, the buoyancy of the floating body is changed by the magnetic fluid, and the magnetic field strength of the electromagnetic coil is controlled to control the floating body. The buoyancy of the magnetic fluid, using the buoyancy of the floating body on the magnetic fluid to control the light The distance from the system to the food so that the laser head of the optical system is controlled at the desired printing position to suit different printing heights of different foods; after the food is printed with the laser label, the controller controls the conveyor to operate and will laser mark The food is sent to the next process, and the cycle is repeated, and the laser label is continuously printed on each food product using a laser head.

The invention has the beneficial effects that the food laser marking machine device detects the printing position of the food by using the distance measuring sensor and the positioning sensor, limits the printing position of the food by the limit sensor, and prints the laser label on the printed position of the food by using the printing laser head. The anti-counterfeiting effect of the food label is improved; since the laser label does not contain ink or ink, it is beneficial to improve the hygiene and safety of the food; meanwhile, the optical system of the laser marking machine is suspended on the magnetic fluid, thereby reducing the influence of vibration on the optical system. .

DRAWINGS

Figure 1 is a schematic view showing the structure of a food laser marking machine.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings:

1 is a schematic structural view of a food laser marking machine device, the food laser marking machine device comprises a laser marking machine 1, a magnetic fluid lifting device 2, a conveyor 3 and a controller 4; the laser marking machine 1 includes Main control machine 5, laser power supply 6, cooling system 7, optical system 8 and control system 9; magnetic fluid lifting device 2 comprises a container 10, a floating body 11, a guide rod 12, a magnetic fluid 13 and an electromagnetic coil 14, a laser marking machine The base 25 of the container 1 and the outer casing of the container 10 are connected to the frame of the conveyor 3, the floating body 11 and the magnetic fluid 13 are located in the container 10, and the electromagnetic coil 14 is disposed in the container 10, a guide hole 15 is defined in the middle of the container 10, the guide rod 12 is located in the guide hole 15, and a sealing member (27) is disposed between the guide rod 12 and the guide hole 15, and the upper end of the guide rod 12 is connected with the floating body 11 The lower end of the rod 12 is connected to the optical system 8 of the laser marking machine 1 for controlling the lifting of the optical system 8, and controlling the distance of the laser head 16 of the optical system 8 to the food item 17; the conveyor 3 includes a driving wheel 18, a motor 19, the driven wheel 20 and the conveyor belt 21, the motor 19 is connected to the driving wheel 18, the conveyor belt 21 is connected with the driving wheel 18 and the driven wheel 20; the controller 4 comprises a distance measuring sensor 22, a limit sensor 23 and a positioning sensor 24, The distance measuring sensor 22 and the positioning sensor 24 are located above the conveyor belt 21, and the distance measuring sensor 22 and the positioning sensor 24 are mounted on the base 25 of the laser marking machine 1 on the side of the driven wheel 20; the limiting sensor 23 is located on the conveyor belt 21. Above, the limit sensor 23 is mounted on the base 25 of the laser marking machine 1 beside the laser head 16, and the distance between the distance measuring sensor 22 and the positioning sensor 24 is equal to the distance from the laser head 16 to the limit sensor 23; Through the control line and control system 9, electromagnetic coil 14. The motor 19, the distance measuring sensor 22, the limit sensor 23, and the positioning sensor 24 are connected.

The working principle of the food laser marking machine device is: when working, the controller 4 is used to control the operation of the conveyor 3, and the food 17 is placed on the conveyor belt 21 so that the direction of the printing surface is upward; when the food 17 runs to When the detection position under the sensor 24 is located, the positioning sensor 24 transmits its signal to the controller 4, and the controller 4 controls the distance measuring sensor 22 to detect the position signal of the printing surface of the food 17 below it, and the distance measuring sensor 22 will print the surface of the food 17 The detected position signal of the printed surface of the food 17 is transmitted to the controller 4; when the food 17 is sent to the limit position of the limit sensor 23 by the conveyor belt 21, the limit sensor 23 transmits the actual position signal of the food 17 to the controller. 4. The controller 4 controls the conveyor 3 to stop running; at the same time, the voltage of the input electromagnetic coil 14 is controlled by the controller 4, the magnetic field strength of the electromagnetic coil 14 is controlled by the voltage of the control electromagnetic coil 14, and the magnetic fluid of the container 10 is made by the magnetic field. 13 is magnetized to change the density of the magnetic fluid 13, to change the buoyancy of the floating body 11 to the magnetic fluid 13, and to control the floating body 11 by controlling the magnetic field strength of the electromagnetic coil 14. The buoyancy of the magnetic fluid 13 is controlled by the buoyancy of the floating body 11 on the magnetic fluid 13 to control the distance of the optical system 8 to the food item 17 so that the laser head 16 of the optical system 8 is controlled at a desired printing position to suit different foods. 17 different printing heights; after the food 17 is printed with the laser label 26, the controller 4 controls the operation of the conveyor 3, and sends the food 17 of the laser label 26 to the next process, so that the cycle is repeated, and the laser label 26 is used to laser label 26 It is continuously printed on each piece of food 17; the laser tag 26 includes a bar code and a two-dimensional code.

In order to reduce the influence of vibration on the optical system 8 and to control the elevation of the optical system 8, the control optical system 8 prints the distance of the laser head 16 to each piece of food 17, the magnetic fluid 13 is sealed in the container 10, and the floating body 11 is suspended in the magnetic fluid In the inner portion 13, the outer diameter of the guide rod 12 is smaller than the inner diameter of the guide hole 15, and the guide rod 12 is mechanically coupled with the guide hole 15.

In order to implement the flow operation of each food printing laser label 26, the driving wheel 18 and the driven wheel 20 are rotated in a clockwise direction, and the conveying belt 21 transports the food 17 in the direction in which it is directed by the distance measuring sensor 22 to the limit sensor 23; The upper conveying surface 27 of the belt 21 is parallel to the horizontal line so as not to change the height position of the food item 17.

In order to carry out the detection of the printing position of the food item 17 and the printing of the laser label 26 on the food item 17 according to the detection position, the position sensor 23 is located on the right side of the laser head 16, the positioning sensor 24 is located on the right side of the distance measuring sensor 22, and the center line of the distance measuring sensor 22 is positioned. The distance of the center line of the sensor 24 is equal to the distance from the center line of the laser head 16 to the center line of the limit sensor 23.

In order to carry out the detection of the printing position of the food item 17 and the printing of the laser label 26 on the food item 17 according to the detection position, the distance between the controlled laser head 16 to the printed food item 17 and the distance from the distance measuring sensor 22 to the food item 17 detected by the distance measuring sensor 22 equal.

In order to control the depth of the laser printing, the same laser label 26 is printed on the uneven food item 17, and the distance measuring sensor 22 transmits a position height signal of the position of the printing laser label 26 to the controller 4, and the controller 4 controls the electric power according to the signal. The distance from the laser head 16 to the printed food item 17 is printed; the print laser head 16 changes in accordance with the positional height signal change of the position of the print laser label 26 of the food 17 detected by the distance measuring sensor 22.

In order to implement the control of the laser head 16 by the controller 4, the distance from the laser head 16 to the printed food item 17 is proportional to the voltage of the controller 4 input electromagnetic coil 14; the distance from the laser head 16 to the printed food item 17 and the electromagnetic coil 14 The magnetic field strength is proportional; the distance from the laser head 16 to the printed food 17 is proportional to the buoyancy of the floating body 11 to the magnetic fluid 13 to effect control of the voltage of the electromagnetic coil 14 to control the lifting and lowering of the laser head 16.

Claims

Food laser marking machine device, food laser marking machine device includes laser marking machine (1), magnetic fluid lifting device (2), conveyor (3) and controller (4); laser marking machine (1) The utility model comprises a main control machine (5), a laser power supply (6), a cooling system (7), an optical system (8) and a control system (9); the magnetic fluid lifting device (2) comprises a container (10) and a floating body (11) ), the guide rod (12), the magnetic fluid (13) and the electromagnetic coil (14), the housing (25) of the laser marking machine (1) and the outer casing of the container (10) are connected to the frame of the conveyor (3) The floating body (11) and the magnetic fluid (13) are located in the container (10), the electromagnetic coil (14) is disposed on the container (10), and the guide hole (15) is provided in the middle of the container (10), and the guide rod (12) Located in the guide hole (15), the upper end of the guide rod (12) is connected with the floating body (11), and the lower end of the guide rod (12) is connected with the optical system (8) of the laser marking machine (1) for controlling the optical system. (8) lifting, and controlling the distance of the laser head (16) of the optical system (8) to the food (17); the conveyor (3) includes a driving wheel (18), a motor (19), and a passive wheel (20) And the conveyor belt (21), the motor (19) is connected to the driving wheel (18), the conveyor belt (21) and the driving wheel (18) and the passive (20) connection; the controller (4) includes a ranging sensor (22), a limit sensor (23), and a positioning sensor (24), the ranging sensor (22) and the positioning sensor (24) are located on the conveyor belt (21) Above, the distance measuring sensor (22) and the positioning sensor (24) are mounted on the base (25) of the laser marking machine (1) on the side of the passive wheel (20); the limit sensor (23) is located on the conveyor belt (21) Above, the limit sensor (23) is mounted on the base (25) of the laser marking machine (1) beside the laser head (16), and the distance between the distance measuring sensor (22) and the positioning sensor (24) is laser The distance between the head (16) and the limit sensor (23) is equal; the controller (4) passes the control line and the control system (9), the electromagnetic coil (14), the motor (19), the distance measuring sensor (22), the limit The sensor (23) and the positioning sensor (24) are connected;

The utility model is characterized in that: the working principle of the food laser marking machine device is: when working, the controller (4) is used to control the operation of the conveyor (3), and the food (17) is placed on the conveyor belt (21), and The direction of the printed surface is directed upwards; when the food (17) runs to the detection position below the positioning sensor (24), the positioning sensor (24) transmits its signal to the controller (4), and the controller (4) controls The distance measuring sensor (22) detects the position signal of the printing surface of the food (17) below, and the distance measuring sensor (22) transmits the position signal of the printing surface of the food (17) detected on the printing surface of the food (17) to the controller ( 4); when the food (17) is sent to the limit sensor by the conveyor belt (21) (23) In the limit position, the limit sensor (23) transmits the actual position signal of the food (17) to the controller (4), and the controller (4) controls the conveyor (3) to stop running; meanwhile, the controller (4) is utilized. Controlling the voltage of the input electromagnetic coil (14), controlling the magnetic field strength of the electromagnetic coil (14) by controlling the voltage of the electromagnetic coil (14), and magnetizing the magnetic fluid (13) of the container (10) by the magnetic field to make the magnetic fluid The density of (13) changes to change the buoyancy of the floating body (11) to the magnetic fluid (13), and the buoyancy of the floating body (11) to the magnetic fluid (13) is controlled by the magnetic field strength of the control electromagnetic coil (14). Using the buoyancy of the floating body (11) on the magnetic fluid (13) to control the distance of the optical system (8) to the food (17) so that the laser head (16) of the optical system (8) is controlled at the desired printing position To suit different foods (17) different print heights; after the food (17) is printed with the laser label (26), the controller (4) controls the conveyor (3) to run, and the laser label (26) will be processed. (17) The process is sent to the next process, and the cycle is continuously cycled, and the laser tag (26) is continuously printed on each of the foods (17) by the laser head (16).
A food laser marking machine apparatus according to claim 1, wherein said controlled laser head (16) has a distance from the printed food (17) and a distance measured by the distance measuring sensor (22) The distance from the sensor (22) to the food (17) is equal.
The food laser marking machine apparatus according to claim 1, wherein said distance measuring sensor (22) transmits a position height signal of a position of the printing laser tag (26) to the controller (4), the controller ( 4) Control the distance of the electro-printing laser head (16) to the printed food (17) according to the signal.
A food laser marking machine apparatus according to claim 3, wherein said printing laser head (16) follows the distance measuring sensor (22) to detect the positional height of the position of the printing laser label (26) of the food (17). The signal changes and changes.
A food laser marking machine apparatus according to claim 1, wherein said laser tag (26) comprises a barcode and a two-dimensional code.
A food laser marking machine apparatus according to claim 3, wherein said laser head (16) is at a distance from the printed food (17) and a voltage input from the controller (4) to the electromagnetic coil (14). Just proportional.
A food laser marking machine apparatus according to claim 3, wherein the distance from said laser head (16) to the printed food (17) is proportional to the magnetic field strength of the electromagnetic coil (14).
A food laser marking machine apparatus according to claim 3, wherein: The distance from the laser head (16) to the printed food (17) is proportional to the buoyancy of the floating body (11) to the magnetic fluid (13).