An automatic precise positioning hot stamping process, a hot stamping control system and a device

Abstract

The present invention discloses an automatic precise positioning hot stamping process, a hot stamping control system and a device. The hot stamping control system includes a hot stamping head module, a hot stamping box body module, a visual recognition and processing module, a tension control module, a sensor detection module, a temperature control module, a film winding servo control module, an alarm display module, a touch screen monitoring module and a PLC control module; the sensor detection module, the visual recognition and processing module and the touch screen monitoring module transmit data to the PLC control module through EtherNet / IP, and the PLC control module transmits data to the hot stamping head module, the hot stamping box body module, the film winding servo control module and the tension control module through EtherCAT; the hot stamping device includes a frame, a bottom plate is fixed on the frame, a film feeding mechanism, a film winding mechanism, a box body placing mechanism, a hot stamping mechanism and a visual mechanism are arranged on the bottom plate, the box body placing mechanism is located between the film feeding mechanism and the film winding mechanism, and the visual mechanism moves forward and backward and left and right following the hot stamping mechanism.

Description

Technical Field

[0001] The present invention relates to the field of mechanical processing technology, and in particular to an automatic and precise positioning hot stamping process, a hot stamping control system and a device. Background Art

[0002] Electrochemical aluminum hot stamping is a commonly used production process for packaging products, and the positioning of printed products is a basic link in the hot stamping process. The operator's plate loading efficiency and the accuracy of product overprinting depend on the positioning process of the printed products. According to the traditional operating method, a test plate is first hot stamped after the plate is loaded, and then, based on the position of the test plate image, the position of the printing plate or rule is roughly estimated and adjusted. In this way, repeated adjustments are often required before the positioning of the printed product can be finally achieved, which is labor-consuming and time-consuming, and the accuracy is not high.

[0003] In addition, when it is necessary to hot-stamp graphics and texts of different specifications, the rules need to be adjusted frequently, which will cause the hot stamping head and the substrate to be misaligned, making the hot stamped printed products inconsistent in position on the substrate, or even not being printed at all, and unable to be accurately positioned. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an automatic and precise positioning hot stamping process, a hot stamping control system and a device. The device and system are based on the current status of the hot stamping machine's printed product positioning and the domestic and foreign positioning hot stamping market, and are used for hot stamping machines producing products such as PET transparent box surface positioning hot stamping.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] An automatic precision positioning hot stamping process includes the following process steps:

[0007] S1. Manually place the box to be ironed on the box placement head, and then press the start button;

[0008] S2, the visual machine takes a photo to detect the pattern of the hot stamping film, and then outputs the pattern coordinates;

[0009] S3, PLC moves the XY axis of the box body and the XY axis of the hot stamping plate according to the coordinate position to complete the secondary precision positioning;

[0010] S4, the hot stamping plate is pressed down along the Z axis to complete the hot stamping;

[0011] S5. After manual picking up, proceed to the next hot stamping cycle.

[0012] In one or more embodiments of the present invention, S2 includes the following precise positioning process:

[0013] S21: First, use sensors for detection. Use a photoelectric sensor to detect the presence or absence of the hot stamping film, a color mark sensor to detect the color of the hot stamping film, and an optical fiber sensor to detect whether it is placed in the box body;

[0014] S22: The vision machine takes a photo, obtains the coordinates of the hot stamping film icon, converts them into the X-axis and Y-axis coordinates of the upper and lower axes, and transmits them to the PLC control system via EtherNet / IP. Then, control the box body and the hot stamping plate for secondary precise positioning;

[0015] S23: The PLC control system calculates the offset according to the coordinates given by the vision machine, and moves the X-axis and Y-axis of the box body to align the hot stamping film icon with the exact middle of the box body, realizing the box body icon positioning function;

[0016] S24: The PLC control system calculates the offset according to the coordinates given by the vision machine, and moves the X-axis and Y-axis of the hot stamping plate to make the hot stamping plate directly above the hot stamping film icon, realizing the precise hot stamping positioning function;

[0017] S25: When the positioning is in place, control the Z-axis of the hot stamping plate to complete the icon hot stamping.

[0018] An automatic precise positioning hot stamping control system includes:

[0019] A hot stamping head module, a hot stamping box body module, a vision recognition processing module, a tension control module, a sensor detection module, a temperature control module, a film winding servo control module, an alarm display module, a touch screen monitoring module, and a PLC control module; the sensor detection module, the vision recognition processing module, and the touch screen monitoring module transmit data to the PLC control module via EtherNet / IP, and the PLC control module transmits data to the hot stamping head module, the hot stamping box body module, the film winding servo control module, and the tension control module via EtherCAT; the alarm display module is a three-color light, which displays different states through lights of different colors; the tension control system controls the tension of the film through a tension controller and a magnetic powder controller; the temperature control system controls the temperature of the hot stamping plate through a thermocouple, a controller, and a solid state relay.

[0020] An automatic precise positioning hot stamping device includes:

[0021] A frame, on which a bottom plate is fixed. A film feeding mechanism, a film winding mechanism, a box body placing mechanism, a hot stamping mechanism, and a vision mechanism are arranged on the bottom plate. The box body placing mechanism is located between the film feeding mechanism and the film winding mechanism, and the vision mechanism moves back and forth and left and right following the hot stamping mechanism.

[0022] In one or more embodiments of the present invention, the film releasing mechanism includes a first vertical frame and a second vertical frame fixed to the bottom plate. Two mutually parallel first long rods and second long rods are fixed on the first vertical frame and the second vertical frame. A vertical plate is fixed on the outer side of the first long rod. A magnetic powder controller is installed on the outer side of the vertical plate through a fixing frame. The output end of the magnetic powder controller is fixed with a first rotating shaft. The first rotating shaft penetrates the vertical plate. Two first shaft sleeves are movably arranged on the first rotating shaft. A first limiting plate is fixed on the first shaft sleeve. Bearing seats are respectively fixed on the first long rod and the second long rod. A second rotating shaft is installed on the bearing seat through a first bearing. A first conveying assembly is arranged between the second rotating shaft and the box placing mechanism.

[0023] In one or more embodiments of the present invention, the film winding mechanism includes a third vertical frame and a fourth vertical frame fixed to the bottom plate. Two mutually parallel third long rods and fourth long rods are fixed on the third vertical frame and the fourth vertical frame. A motor plate and a vertical rod are fixed on the outer side of the third long rod. A vertical plate is fixed on the fourth long rod. The motor plate and the vertical plate are arranged oppositely. A film winding motor is fixed on the outer side of the motor plate. A driving roller shaft is installed between the motor plate and the vertical plate through a second bearing. The inner side of the extending end of the vertical rod is installed with a winding shaft through a third bearing. Two second shaft sleeves are movably arranged on the winding shaft. A second limiting plate is fixed on the second shaft sleeve. A driving wheel is sleeved and fixed on the driving roller shaft. A driven wheel is sleeved and fixed on the winding shaft. A synchronous belt is sleeved on the driving wheel and the driven wheel. A second conveying assembly is arranged between the driving roller shaft and the box placing mechanism.

[0024] In one or more embodiments of the present invention, the first conveying assembly and the second conveying assembly have the same structure. They respectively include a plurality of relatively arranged first adjusting rods. The first adjusting rods are respectively movably fixed on the outer sides of the first long rod, the second long rod, the third long rod and the fourth long rod. A conveying shaft is installed between the upper ends of the two relatively arranged first adjusting rods through a fourth bearing. Two limiting shaft sleeves are arranged on the conveying shaft.

[0025] In one or more embodiments of the present invention, the cartridge placement mechanism includes a fixing plate fixed to the lower side of the bottom plate. One side of the fixing plate is fixed with a first lifting motor, a first linear guide rail, and a lead screw. The output end of the first lifting motor extends upward and is axially connected to the lead screw through a coupling. The lead screw nut on the lead screw and the slider on the first linear guide rail are connected through a connecting plate. The upper side end of the connecting plate extends to the upper side of the bottom plate and is fixed with a support plate. A first X-axis slide is fixed on the support plate. The input end of the first X-axis slide is connected to a cartridge transverse motor through a coupling. A first slide plate is fixed to the output end of the first X-axis slide. A first Y-axis slide is fixed on the first slide plate. The input end of the first Y-axis slide is connected to a cartridge longitudinal motor through a coupling. An installation seat is fixed to the output end of the first Y-axis slide. A cartridge placement head is fixed on the installation seat.

[0026] In one or more embodiments of the present invention, the hot stamping mechanism includes two oppositely arranged installation vertical plates fixed to the bottom plate. A substrate is fixed on the two installation vertical plates. A second Y-axis slide and a second linear slide rail are fixed on the substrate. A first connection block is fixed to the slider of the second linear slide rail. A second slide plate is fixed to the output end of the second Y-axis slide and the first connection block. A third slide plate is fixed on the second slide plate. A second X-axis slide and a third linear slide rail are fixed to the front side of the third slide plate. A second connection block is fixed to the slider of the third linear slide rail. A fourth slide plate is fixed to the output end of the second X-axis slide and the outside of the second connection block. A lifting slide is fixed to the front side of the fourth slide plate. A lifting plate is fixed to the output end of the lifting slide. The input end of the lifting slide is axially connected to a second lifting motor. A hot stamping plate is installed on the outside of the lifting plate through an adjustment assembly; the input end of the second Y-axis slide is axially connected to a hot stamping longitudinal motor, and the input end of the second X-axis slide is axially connected to a hot stamping transverse motor.

[0027] In one or more embodiments of the present invention, the vision mechanism includes a first connecting rod fixed to the outside of the fourth slide plate. The extended end of the first connecting rod is fixed with a second connecting rod. The extended end of the second connecting rod is fixed with a third connecting rod extending downward. The lower side of the third connecting rod is fixed with a base for installing a camera light source. An industrial telecentric lens is installed on the second connecting rod; the adjustment assembly includes a rib plate fixed to the outside of the lifting plate. The lower side of the rib plate is fixed with an "I"-shaped plate. The lower side of the "I"-shaped plate is bolted with a gear. The lower side of the gear is rotatably provided with a rotating seat. A fifth bearing is sleeved on the rotating seat through a shaft. The gear is sleeved on the fifth bearing. The hot stamping plate is fixed to the lower side of the rotating seat. A base is fixed on the rotating seat. A second adjusting rod is rotatably connected through the base. A rack is clamped inside the second adjusting rod. A strip-shaped groove is opened in the rack. Two oppositely arranged arc-shaped grooves are opened in the gear. A connecting piece is arranged in the strip-shaped groove and the arc-shaped groove. The rack is meshed with the gear. A hand wheel is fixed to the outside of the second adjusting rod.

[0028] Advantages of the present invention:

[0029] 1. The vision recognition processor of the present invention in cooperation with the telecentric lens makes the vision recognition accuracy higher, and the vision positioning accuracy reaches within ±0.05 mm.

[0030] 2. The present invention can realize the detection of red, green, silver, and gold hot stamping films.

[0031] 3. The present invention uses an Omron integrated controller and is controlled by a servo motor, making the positioning accuracy of the icon hot stamping position higher. The secondary positioning accuracy of the hot stamping head and the hot stamping film reaches within ±0.15 mm, and the accuracy of the label hot stamping on the box body reaches within ±0.5 mm.

[0032] 4. The present invention improves the automation level of the hot stamping machine, improves the production efficiency and product qualification rate. The product production speed can be ≥13 pieces / min, and the product hot stamping qualification rate ≥96%.

[0033] 5. The present invention controls the tension of the hot stamping film by using a magnetic powder brake, making the thinner hot stamping film flat, without wrinkles and curling.

[0034] 6. When hot stamping, the present invention uses two sets of three-axis servo control systems, the hot stamping head module and the box body three-axis servo module, making the positioning accuracy of the icon hot stamping position higher. The secondary positioning accuracy of the hot stamping head and the hot stamping film reaches within ±0.15 mm, and the accuracy of the label hot stamping on the box body reaches within ±0.5 mm.

[0035] 7. The same servo module is used for the movement of the X-axis and Y-axis of the vision mechanism and the hot stamping mechanism of the present invention, so that there is no need to separately install a displacement component for the vision mechanism, saving costs.

[0036] 8. When the adjustment component of the present invention is in use, by loosening the connecting piece and then manually rotating the second adjustment rod, a driving force is generated on the rack. When the connecting piece in the strip-shaped groove reaches the limit position, since the gear is fixed, the force is transmitted to the rotating seat through the connecting piece, causing the rotating seat to drive the hot stamping plate to rotate. After the adjustment is completed, the connecting piece is tightened, and the rotation position of the hot stamping plate is limited by the arc-shaped groove, so that the angle of the hot stamping plate can be finely adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is the process flow chart of the present invention;

[0038] Figure 2 is the system control diagram of the present invention;

[0039] Figure 3 is the flow chart of the tension control system;

[0040] Figure 4 is the flow chart of the temperature control system;

[0041] Figure 5 is the flow chart of the visual recognition processing;

[0042] Figure 6 is the structural schematic diagram of the present invention;

[0043] Figure 7 is Figure 6 the structural schematic diagram after removing the frame and the protective cover;

[0044] Figure 8 is the structural schematic diagram of the film feeding mechanism and the film winding mechanism;

[0045] Figure 9 is the structural schematic diagram of the box placing mechanism;

[0046] Figure 10 is the structural schematic diagram of the hot stamping mechanism;

[0047] Figure 11 is the structural schematic diagram of the hot stamping mechanism in another direction;

[0048] Figure 12 is Figure 10 the enlarged view at position A in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. The components of the embodiments of the present invention usually described and illustrated in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0050] In this embodiment, as Figure 1 shown, an automatic precise positioning hot stamping process includes the following process steps:

[0051] S1. Manually place the box body to be hot stamped on the box body placement head 36, and then press the start button;

[0052] S2. The vision machine takes a photo of the hot stamping film pattern and then outputs the pattern coordinates;

[0053] S3. The PLC moves the XY axes of the box body and the XY axes of the hot stamping plate according to the coordinate positions to complete secondary precise positioning;

[0054] S4. The hot stamping plate 47 presses down along the Z axis to complete hot stamping;

[0055] S5. After manual picking, the next hot stamping cycle is carried out.

[0056] In one or more embodiments of the present invention, the S2 includes the following precise positioning processes:

[0057] S21: First, use sensors for detection. Use a photoelectric sensor to detect the presence or absence of the hot stamping film, a color mark sensor to detect the color of the hot stamping film, and a fiber optic sensor to detect whether the box body is placed;

[0058] S22: The vision machine takes a photo to obtain the coordinates of the hot stamping film icon, converts them into the X-axis and Y-axis coordinates of the upper and lower axes, and transmits them to the PLC control system through EtherNet / IP, and then controls the box body and the hot stamping plate to perform secondary precise positioning;

[0059] S23: The PLC control system calculates the offset according to the coordinates given by the vision machine, and moves the X-axis and Y-axis of the box body to align the hot stamping film icon with the exact middle of the box body, realizing the box body icon positioning function;

[0060] S24: The PLC control system calculates the offset based on the coordinates given by the vision machine, and moves the X-axis and Y-axis of the hot stamping plate to place the hot stamping plate directly above the icon on the hot stamping film, achieving the precise hot stamping positioning function.

[0061] S25: When the positioning is in place, control the Z-axis of the hot stamping plate to complete the icon hot stamping.

[0062] In this embodiment, as Figures 2 to 5 shown, an automatic precise positioning hot stamping control system includes:

[0063] A hot stamping head module, a hot stamping box body module, a vision recognition and processing module, a tension control module, a sensor detection module, a temperature control module, a film rewinding servo control module, an alarm display module, a touch screen monitoring module, and a PLC control module; the sensor detection module, the vision recognition and processing module, and the touch screen monitoring module transmit data to the PLC control module through EtherNet / IP, and the PLC control module transmits data to the hot stamping head module, the hot stamping box body module, the film rewinding servo control module, and the tension control module through EtherCAT; the alarm display module is a three-color light, which displays different states through lights of different colors; the tension control system controls the tension of the film through a tension controller and a magnetic powder controller; the temperature control system controls the temperature of the hot stamping plate through a thermocouple, a controller, and a solid state relay.

[0064] This system is divided into a manual debugging mode and an automatic operation mode.

[0065] After the power is turned on, the temperature control module controls the hot stamping plate 47 to heat up to about 200 °C to meet the hot stamping temperature requirements.

[0066] The tension controller controls the magnetic powder brake to control the tension during the unwinding of the hot stamping film, so that the tension of the hot stamping film is appropriate, achieving a flat and wrinkle-free effect.

[0067] The processing steps of the vision recognition and processing module are as follows:

[0068] Take pictures and position through a vision machine, detect the position of the golden circle contour, detect the coordinates of the golden circle, then detect the position of the red circle contour, detect the coordinates of the red circle, then detect the position of the silver circle contour, detect the coordinates of the silver circle, then detect the position of the green circle contour, detect the coordinates of the green circle, and then output pixel coordinate data, calibrate the upper axis reference position, calibrate the lower axis reference position, and then output the upper axis offset data and the lower axis offset data. The upper axis is the hot stamping head module for moving the position of the hot stamping plate 47, and the lower axis is the hot stamping box body module for moving the position of the box body.

[0069] When the system starts, it first initializes, and then conveys and tensions the hot stamping film through the film receiving servo control module and the tension control module. Then, it uses the visual recognition processing module to detect the film icon and the box body. If not detected, it continues to detect. If detected, it takes a picture of the icon through the vision machine to locate the icon, outputs the icon coordinates to the PLC control module. Then, the PLC control module controls the XY axes of the hot stamping head module and the hot stamping box body module according to the position information, and then controls the Z axis of the hot stamping head module to complete the hot stamping. Its sensor detection module is composed of several sensors.

[0070] In this embodiment, as Figures 6 to 12 shown, an automatic precise positioning hot stamping device includes:

[0071] A frame 1, on which a bottom plate 2 is fixed. On the bottom plate 2, there are a film feeding mechanism, a film receiving mechanism, a box body placing mechanism, a hot stamping mechanism, and a vision mechanism. The box body placing mechanism is located between the film feeding mechanism and the film receiving mechanism. The vision mechanism moves back and forth and left and right following the hot stamping mechanism. One side of the bottom plate 2 is equipped with a start-stop button.

[0072] In this embodiment, the same servo module is used for the movement of the X-axis and Y-axis of the vision mechanism and the hot stamping mechanism, so that there is no need to install a displacement component for the vision mechanism separately, which saves costs.

[0073] In one or more embodiments of the present invention, the film feeding mechanism includes a first vertical frame 3 and a second vertical frame 4 fixed on the bottom plate 2. Two mutually parallel first long rods 5 and second long rods 6 are fixed on the first vertical frame 3 and the second vertical frame 4. A vertical plate 7 is fixed on the outer side of the first long rod 5. A magnetic powder controller 8 is installed on the outer side of the vertical plate 7 through a fixing frame. The output end of the magnetic powder controller 8 is fixed with a first rotating shaft 9. The first rotating shaft 9 penetrates the vertical plate 7. Two first shaft sleeves are movably arranged on the first rotating shaft 9. A first limiting plate 10 is fixed on the first shaft sleeve. Bearing seats 11 are respectively fixed on the first long rod 5 and the second long rod 6. A second rotating shaft 12 is installed on the bearing seat 11 through a first bearing. A first conveying component is arranged between the second rotating shaft 12 and the box body placing mechanism.

[0074] In this embodiment, the magnetic powder controller 8 adopts the existing technology, and its specific structure will not be described in detail here. The diameter of the inner diameter hole of the first shaft sleeve is larger than the diameter of the first rotating shaft 9. A fastening screw is screwed on the first shaft sleeve. The inner end of the fastening screw is adapted to the outer surface of the first rotating shaft 9.

[0075] In one or more embodiments of the present invention, the film winding mechanism includes a third upright frame 13 and a fourth upright frame 14 fixed to the bottom plate. Two mutually parallel third long rods 15 and fourth long rods 16 are fixed to the third upright frame 13 and the fourth upright frame 14. A motor plate 17 and a vertical rod 18 are fixed to the outer side of the third long rod 15. A vertical plate 19 is fixed to the fourth long rod 16. The motor plate 17 and the vertical plate 19 are arranged opposite to each other. A film winding motor 20 is fixed to the outer side of the motor plate 17. A driving roller shaft 21 is installed between the motor plate 17 and the vertical plate 19 through a second bearing. The inner side of the extending end of the vertical rod 18 is installed with a winding shaft 22 through a third bearing. Two second shaft sleeves are movably arranged on the winding shaft 22. A second limiting plate 23 is fixed to the second shaft sleeve. A driving wheel is sleeved and fixed on the driving roller shaft 21. A driven wheel is sleeved and fixed on the winding shaft 22. A synchronous belt 24 is sleeved on the driving wheel and the driven wheel. A second conveying assembly is arranged between the driving roller shaft 21 and the box body placing mechanism.

[0076] In one or more embodiments of the present invention, the first conveying assembly and the second conveying assembly have the same structure, and each of them includes a plurality of relatively arranged first adjusting rods 25. The first adjusting rods 25 are respectively movably fixed to the outer sides of the first long rod 5, the second long rod 6, the third long rod 15 and the fourth long rod 16. A conveying shaft 26 is installed between the upper ends of the two relatively arranged first adjusting rods 25 through a fourth bearing. Two limiting shaft sleeves are arranged on the conveying shaft 26.

[0077] In this embodiment, the conveying shafts on the first conveying assembly and the second conveying assembly form a roller path for the hot stamping film. Long strip holes are formed in the first adjusting rods 25. Threaded holes are formed in the outer sides of the first long rod 5, the second long rod 6, the third long rod 15 and the fourth long rod 16. The first adjusting rods 25 are fixed by bolts. The bolts penetrate through the long strip holes and extend into the threaded holes. The angle and height of the first adjusting rods 25 can be manually adjusted and fastened by bolts after adjustment. The distance between the two limiting shaft sleeves can be adjusted to adapt to hot stamping films of different widths.

[0078] In one or more embodiments of the present invention, the cartridge placement mechanism includes a fixing plate 27 fixed to the lower side of the base plate 2. One side of the fixing plate 27 is fixed with a first lifting motor 28, a first linear guide rail and a lead screw. The output end of the first lifting motor 28 extends upward and is axially connected to the lead screw through a coupling. The lead screw nut on the lead screw and the slider on the first linear guide rail are connected through a connecting plate 29. The upper side end of the connecting plate 29 extends to the upper side of the base plate 2 and is fixed with a support plate 30. A first X-axis slide 31 is fixed on the support plate 30. The input end of the first X-axis slide 31 is connected with a cartridge transverse motor 32 through a coupling. A first slide plate is fixed at the output end of the first X-axis slide 31. A first Y-axis slide 33 is fixed on the first slide plate. The input end of the first Y-axis slide 33 is connected with a cartridge longitudinal motor 34 through a coupling. A mounting seat 35 is fixed at the output end of the first Y-axis slide 33. A cartridge placement head 36 is fixed on the mounting seat 35.

[0079] In this embodiment, the cartridge placement head 36 can be replaced with different shapes to adapt to cartridges of different shapes.

[0080] In one or more embodiments of the present invention, the hot stamping mechanism includes two oppositely arranged mounting vertical plates 37 fixed to the base plate 2. A base plate 38 is fixed on the two mounting vertical plates 37. A second Y-axis slide 39 and a second linear slide rail are fixed on the base plate 38. A first connecting block is fixed on the slider of the second linear slide rail. A second slide plate 40 is fixed on the output end of the second Y-axis slide 39 and the first connecting block. A third slide plate 41 is fixed on the second slide plate 40. A second X-axis slide 42 and a third linear slide rail are fixed on the front side of the third slide plate 41. A second connecting block is fixed on the slider of the third linear slide rail. A fourth slide plate 43 is fixed on the output end of the second X-axis slide 42 and the outside of the second connecting block. A lifting slide 44 is fixed on the front side of the fourth slide plate 43. A lifting plate 45 is fixed at the output end of the lifting slide 44. The input end of the lifting slide 44 is axially connected with a second lifting motor 46. A hot stamping plate 47 is installed on the outside of the lifting plate 45 through an adjusting assembly; the input end of the second Y-axis slide 39 is axially connected with a hot stamping longitudinal motor 61, and the input end of the second X-axis slide 42 is axially connected with a hot stamping transverse motor 62.

[0081] In one or more embodiments of the present invention, the vision mechanism includes a first connecting rod 48 fixed to the outside of the fourth slide plate 43. The extended end of the first connecting rod 48 is fixed with a second connecting rod 49. The extended end of the second connecting rod 49 is fixed with a third connecting rod 50 extending downward. A base 52 for installing a camera light source is fixed on the lower side of the third connecting rod 50. An industrial telecentric lens 51 is installed on the second connecting rod 49;

[0082] The adjusting component includes a rib plate 53 fixed to the outside of the lifting plate 45. A "worker" - shaped plate 54 is fixed to the lower side of the rib plate 53. A gear 55 is connected to the lower side of the "worker" - shaped plate 54 by bolts. A rotating seat 56 is rotatably arranged below the gear 55. A fifth bearing is arranged on the rotating seat 56 through a bushing. The gear 55 is sleeved on the fifth bearing. The hot stamping plate 47 is fixed to the lower side of the rotating seat 56. A base 57 is fixed to the rotating seat 56. A second adjusting rod 58 is rotatably connected through the base 57. A rack 59 is clamped inside the second adjusting rod 58. A strip - shaped groove is formed in the rack 59. Two oppositely - arranged arc - shaped grooves are formed in the gear 55. A connecting piece is arranged in the strip - shaped groove and the arc - shaped groove. The rack 59 meshes with the gear 55. A handwheel 60 is fixed to the outside of the second adjusting rod 58.

[0083] In this embodiment, the connecting piece is composed of a screw rod and a nut. Through the setting of this adjusting component, the angle of the hot stamping plate 47 can be finely adjusted. The rotating seat is fixed by two rotating plates and four groups of long - rod bolts.

[0084] When the adjusting component is in use, by loosening the connecting piece and then manually rotating the second adjusting rod 58, the rack 59 generates a driving force. When the connecting piece in the strip - shaped groove reaches the limit position, since the gear 55 is fixed, the force is transmitted to the rotating seat 56 through the connecting piece, causing the rotating seat 56 to drive the hot stamping plate 47 to rotate. After the adjustment is completed, the connecting piece is tightened, and the rotation position is limited through the arc - shaped groove.

[0085] In this embodiment, the vision machine uses an existing industrial telecentric lens, which can identify gold, silver, red, and green hot stamping films. Visual recognition is used for primary positioning, and a servo module is used for secondary precise positioning to achieve the purpose of precise hot stamping positioning.

[0086] The working principle of the present invention:

[0087] By placing the box body on the box - body placing head 36, then the hot stamping film is conveyed to the formed roller path through the film - feeding mechanism and the film - winding mechanism. Then, the industrial telecentric lens 51 is used to detect the film icon and the box body. If not detected, continue to detect. If detected, the industrial telecentric lens 51 takes a picture to position the icon, outputs the icon coordinates to the PLC. Then the PLC controls the XY axes of the hot stamping mechanism and the box - body placing mechanism according to the position information, and then controls the Z - axis of the hot stamping mechanism to complete the hot stamping process.

[0088] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, terms such as "set" and "connected" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An automatic precise positioning hot stamping process for an automatic precise positioning hot stamping device, characterized in that, The automatic precise positioning hot stamping device includes: a frame (1), a bottom plate (2) is fixed on the frame (1), a film feeding mechanism, a film collecting mechanism, a box body placing mechanism, a hot stamping mechanism and a vision mechanism are arranged on the bottom plate (2), the box body placing mechanism is located between the film feeding mechanism and the film collecting mechanism, and the vision mechanism moves forward and backward and left and right following the hot stamping mechanism; the vision mechanism includes an industrial telecentric lens (51). The box body placing mechanism includes a fixing plate (27) fixed on the lower side of the bottom plate (2), a first lifting motor (28), a first linear guide rail and a lead screw are fixed on one side of the fixing plate (27), the output end of the first lifting motor (28) extends upward and is axially connected with the lead screw through a coupling, the lead screw nut on the lead screw is connected with the slider on the first linear guide rail through a connecting plate (29), the upper side end of the connecting plate (29) extends to the upper side of the bottom plate (2) and is fixed with a support plate (30), a first X-axis slide table (31) is fixed on the support plate (30), the input end of the first X-axis slide table (31) is connected with a box body transverse motor (32) through a coupling, a first slide plate is fixed on the output end of the first X-axis slide table (31), a first Y-axis slide table (33) is fixed on the first slide plate, the input end of the first Y-axis slide table (33) is connected with a box body longitudinal motor (34) through a coupling, an installation seat (35) is fixed on the output end of the first Y-axis slide table (33), and a box body placing head (36) is fixed on the installation seat (35). The hot stamping mechanism includes two oppositely arranged installation vertical plates (37) fixed on the bottom plate (2), a substrate (38) is fixed on the two installation vertical plates (37), a second Y-axis slide table (39) and a second linear slide rail are fixed on the substrate (38), a first connecting block is fixed on the slider of the second linear slide rail, a second slide plate (40) is fixed on the output end of the second Y-axis slide table (39) and the first connecting block, a third slide plate (41) is fixed on the second slide plate (40), a second X-axis slide table (42) and a third linear slide rail are fixed on the front side of the third slide plate (41), a second connecting block is fixed on the slider of the third linear slide rail, a fourth slide plate (43) is fixed on the output end of the second X-axis slide table (42) and the outside of the second connecting block, a lifting slide table (44) is fixed on the front side of the fourth slide plate (43), a lifting plate (45) is fixed on the output end of the lifting slide table (44), the input end of the lifting slide table (44) is axially connected with a second lifting motor (46), and a hot stamping plate (47) is installed on the outside of the lifting plate (45) through an adjusting component; the input end of the second Y-axis slide table (39) is axially connected with a hot stamping longitudinal motor (61), and the input end of the second X-axis slide table (42) is axially connected with a hot stamping transverse motor (62). The automatic precise positioning hot stamping process includes the following process steps: S1. Manually place the box to be hot stamped on the box body placing head (36), and then press the start button. S2. The industrial telecentric lens (51) takes pictures of the hot stamping film icon and then outputs the icon coordinates. S3. The PLC control system moves the XY axes of the box placement mechanism and the XY axes of the hot stamping mechanism according to the coordinate positions to complete secondary precise positioning. S4. The hot stamping plate (47) presses down to complete hot stamping. S5. After manual picking, the next hot stamping cycle is carried out. The automatic precise positioning hot stamping process includes the following precise positioning processes: First, sensors are used for detection. An optoelectronic sensor is used to detect the presence or absence of the hot stamping film, a color mark sensor is used to detect the color of the hot stamping film, and a fiber optic sensor is used to detect whether the box is placed. The industrial telecentric lens (51) takes pictures to obtain the coordinates of the hot stamping film icon, converts them into the X-axis and Y-axis coordinates of the upper and lower axes, and transmits them to the PLC control system through EtherNet / IP, and then controls the box and the hot stamping plate to perform secondary precise positioning. The PLC control system calculates the offset according to the coordinates given by the industrial telecentric lens (51), and moves the X-axis and Y-axis of the box placement mechanism to align the hot stamping film icon with the exact middle of the box, realizing the box icon positioning function. The PLC control system calculates the offset according to the coordinates given by the industrial telecentric lens (51), and moves the X-axis and Y-axis of the hot stamping mechanism to make the hot stamping plate directly above the hot stamping film icon, realizing the precise hot stamping positioning function. When the positioning is in place, control the hot stamping plate to press down to complete the icon hot stamping.

2. The automatic precise positioning hot stamping process according to claim 1, characterized in that: The film feeding mechanism includes a first vertical frame (3) and a second vertical frame (4) fixed on the bottom plate (2). Two mutually parallel first long rods (5) and second long rods (6) are fixed on the first vertical frame (3) and the second vertical frame (4). A vertical plate (7) is fixed on the outer side of the first long rod (5). A magnetic powder controller (8) is installed on the outer side of the vertical plate (7) through a fixing frame. The output end of the magnetic powder controller (8) is fixed with a first rotating shaft (9). The first rotating shaft (9) penetrates the vertical plate (7). Two first shaft sleeves are movably arranged on the first rotating shaft (9). A first limiting plate (10) is fixed on the first shaft sleeve. Bearing seats (11) are respectively fixed on the first long rod (5) and the second long rod (6). A second rotating shaft (12) is installed on the bearing seat (11) through a first bearing. A first conveying component is arranged between the second rotating shaft (12) and the box placement mechanism.

3. The automatic precise positioning hot stamping process according to claim 2, characterized in that: The film winding mechanism includes a third vertical frame (13) and a fourth vertical frame (14) fixed on the bottom plate. Two mutually parallel third long rods (15) and fourth long rods (16) are fixed on the third vertical frame (13) and the fourth vertical frame (14). A motor plate (17) and a vertical rod (18) are fixed on the outer side of the third long rod (15). A vertical plate (19) is fixed on the fourth long rod (16). The motor plate (17) and the vertical plate (19) are arranged oppositely. A film winding motor (20) is fixed on the outer side of the motor plate (17). A driving roller shaft (21) is installed between the motor plate (17) and the vertical plate (19) through a second bearing. The inner side of the extended end of the vertical rod (18) is installed with a winding shaft (22) through a third bearing. Two second shaft sleeves are movably arranged on the winding shaft (22). A second limit plate (23) is fixed on the second shaft sleeve. A driving wheel is sleeved and fixed on the driving roller shaft (21). A driven wheel is sleeved and fixed on the winding shaft (22). A synchronous belt (24) is sleeved on the driving wheel and the driven wheel. A second conveying assembly is arranged between the driving roller shaft (21) and the box body placing mechanism.

4. The automatic precise positioning hot stamping process according to claim 3, wherein: The first conveying assembly and the second conveying assembly have the same structure, and each of them includes a plurality of relatively arranged first adjusting rods (25). The first adjusting rods are respectively movably fixed on the outer sides of the first long rod (5), the second long rod (6), the third long rod (15) and the fourth long rod (16). A conveying shaft (26) is installed between the upper ends of the two relatively arranged first adjusting rods (25) through a fourth bearing. Two limit shaft sleeves are arranged on the conveying shaft (26).

5. The automatic precise positioning hot stamping process according to claim 4, wherein: The visual mechanism includes a first connecting rod (48) fixed to the outside of the fourth slide plate (43). A second connecting rod (49) is fixed to the extending end of the first connecting rod (48). A third connecting rod (50) extending downward is fixed to the extending end of the second connecting rod (49). A base (52) for installing a camera light source is fixed to the lower side of the third connecting rod (50). An industrial telecentric lens (51) is installed on the second connecting rod (49). The adjusting assembly includes a rib plate (53) fixed to the outside of the lifting plate (45). An "I"-shaped plate (54) is fixed to the lower side of the rib plate (53). A gear (55) is connected to the lower side of the "I"-shaped plate (54) by bolts. A rotating seat (56) is rotatably arranged below the gear (55). A fifth bearing is sleeved on the rotating seat (56) through a shaft sleeve. The gear (55) is sleeved on the fifth bearing. The hot stamping plate (47) is fixed to the lower side of the rotating seat (56). A base (57) is fixed to the rotating seat (56). A second adjusting rod (58) is screwed through the base (57). A rack (59) is clamped inside the second adjusting rod (58). A strip-shaped groove is formed in the rack (59). Two oppositely arranged arc-shaped grooves are formed in the gear (55). A connecting piece is arranged in the strip-shaped groove and the arc-shaped grooves. The rack (59) meshes with the gear (55). A handwheel (60) is fixed to the outside of the second adjusting rod (58).

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