Automatic packaging box gold stamping device

Abstract

The utility model discloses an automatic packaging box gold stamping device which comprises a machine base, a paper supply mechanism, a paper conveying and distributing mechanism, a surface treatment mechanism, an indentation hot stamping mechanism and a paper collecting mechanism. The paper supply mechanism, the paper conveying and distributing mechanism, the surface treatment mechanism, the indentation hot stamping mechanism and the paper collecting mechanism are arranged on the machine base. The paper supply mechanism is used for providing paper to be conveyed for the paper conveying and separating mechanism; the paper conveying and separating mechanism is arranged above the paper supply mechanism and is used for sequentially conveying paper to the surface treatment mechanism; the surface treatment mechanism is used for curing gloss oil on the surface of the paper, detecting a hot stamping mark of the paper and sending a control signal to the indentation hot stamping mechanism; the indentation hot stamping mechanism is used for performing hot stamping on the surface of the paper cured with the gloss oil according to the control signal; the paper collecting mechanism is used for collecting the hot-stamped paper; the paper feeding mechanism, the paper conveying and separating mechanism, the surface treatment mechanism, the indentation hot stamping mechanism and the paper collecting mechanism are matched, so that automatic hot stamping treatment of paper is realized, the production efficiency is improved, the production cost is reduced, and the product consistency is better.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging and printing, in particular to an automatic packaging box hot stamping device. Background Art

[0002] Hot stamping refers to the process of hot stamping anodized aluminum foil onto the surface of the substrate under a certain temperature and pressure. The images and texts printed on the hot stamped aluminum have a strong metallic luster, bright colors, and never fade. Hot stamping is often used in the production process of packaging boxes.

[0003] The existing hot stamping device for packaging boxes manually places the paper coated with varnish on the hot stamping device, and then the hot stamping device performs hot stamping on the paper; this results in low hot stamping efficiency for the packaging boxes, relatively high production costs, and poor product consistency. Summary of the invention

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide an automatic packaging box hot stamping device, so as to realize the automatic hot stamping processing of paper, improve production efficiency, help reduce production costs, and improve product consistency.

[0005] To achieve the above-mentioned purpose, the specific scheme of the utility model is as follows: an automatic packaging box hot stamping device, comprising a machine base, a paper feeding mechanism arranged on the machine base, and a paper feeding and separating mechanism, a surface treatment mechanism, a creasing and hot stamping mechanism and a paper receiving mechanism arranged on the machine base in sequence along the paper conveying direction;

[0006] The paper feeding mechanism is configured to provide the paper to be conveyed to the paper conveying and separating mechanism;

[0007] The paper feeding and separating mechanism is arranged above the paper feeding mechanism and is configured to sequentially feed the paper to the surface treatment mechanism;

[0008] The surface treatment mechanism is configured to cure varnish on the surface of the paper, detect the hot stamping mark of the paper, and send a control signal to the creasing and hot stamping mechanism;

[0009] The embossing and hot stamping mechanism is configured to perform hot stamping on the surface of the paper on which the varnish is cured according to the control signal;

[0010] The paper collection mechanism is configured to collect and stack the paper after hot stamping.

[0011] Optionally, the surface treatment mechanism includes a first machine platform, a positioning controller, and a varnish delivery component, a varnish coating roller, a curing component, a photoelectric detector, and a first paper pressing guide roller, which are arranged above the first machine platform and sequentially arranged along the paper conveying direction;

[0012] The first machine is provided with a plurality of first conveying rollers arranged at intervals along the paper conveying direction; the varnish conveying assembly is in abutment with the varnish coating roller; the varnish coating roller and the first paper pressing guide roller are respectively located directly above the first conveying roller; the positioning controller is communicatively connected with the photoelectric detector and the indentation and hot stamping mechanism, and the positioning controller is also used to control the operation of the first paper pressing guide roller, the first conveying roller and the varnish coating roller.

[0013] Optionally, the varnish delivery assembly includes a varnish tank, an oiling roller, an anilox roller and a scraper; the oiling roller is arranged above the varnish tank, and part of the oiling roller is located in the varnish tank, the roller surface of the anilox roller abuts against the roller surface of the oiling roller, the blade of the scraper abuts against the roller surface of the anilox roller, and the roller surface of the anilox roller abuts against the roller surface of the varnish coating roller.

[0014] Optionally, the curing assembly includes a UV curing lamp and a hot air dryer disposed at intervals.

[0015] Optionally, the creasing and hot stamping mechanism includes a second machine platform and a stamping motor, a creasing upper die, a hot stamping foil conveying assembly, a second press paper guide roller, and a third press paper guide roller, which are arranged above the second machine platform;

[0016] The second machine is rotatably provided with a plurality of second conveying rollers arranged at intervals along the paper conveying direction, and the second machine is provided with an indentation lower mold just below the indentation upper mold; the second paper pressing guide roller and the third paper pressing guide roller are respectively located just above the second conveying roller;

[0017] The positioning controller is also used to control the operation of the stamping motor, the hot stamping foil conveying assembly, the second paper pressing guide roller, the third paper pressing guide roller, and the second conveying roller.

[0018] Optionally, the hot stamping foil conveying assembly comprises an unwinding roller, a first passing roller, a second passing roller, a third passing roller, a first foil pressing roller, a fourth passing roller, a second foil pressing roller, a fifth passing roller, a sixth passing roller, and a winding roller, which are sequentially arranged along the paper conveying direction; an electrochemical aluminum hot stamping foil is wound on the unwinding roller, and the electrochemical aluminum hot stamping foil is sequentially wound around the first passing roller, the second passing roller, the third passing roller, the first foil pressing roller, the fourth passing roller, the second foil pressing roller, the fifth passing roller, and the sixth passing roller before being wound on the winding roller;

[0019] The third passing roller and the fourth passing roller are symmetrically arranged, the first foil pressing roller and the second foil pressing roller are symmetrically arranged, and the electrochemical aluminum hot stamping foil is in a horizontal state between the first foil pressing roller and the second foil pressing roller.

[0020] Optionally, the paper feeding mechanism includes a first lifting platform arranged below the paper feeding and paper separating mechanism and a first supporting plate arranged at the output end of the first lifting platform.

[0021] Optionally, the paper feeding and separating mechanism includes a paper separating seat and a blowing rod, a paper separating suction nozzle, a paper pressing blowing nozzle and a paper delivering suction nozzle movably arranged on the paper separating seat.

[0022] Optionally, the paper receiving mechanism includes a paper receiving platform, a winding belt inclined at the top of the paper receiving platform, a second lifting platform arranged on a side of the paper receiving platform away from the creasing and hot stamping mechanism, and a second support plate arranged on the second lifting platform.

[0023] The beneficial effects of the utility model are as follows: the utility model realizes the automatic hot stamping processing of paper by arranging the paper supply mechanism, the paper feeding and separating mechanism, the surface treatment mechanism, the creasing and hot stamping mechanism and the paper receiving mechanism, thereby improving the production efficiency, helping to reduce the production cost and improving the product consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 yes Figure 1 A local enlarged schematic diagram of the middle A;

[0026] Figure 3 It is a structural schematic diagram of the hot stamping foil conveying assembly of the utility model;

[0027] Figure 4 It is a structural schematic diagram of the paper feeding and separating mechanism of the utility model;

[0028] Description of reference numerals: 1, machine base; 21, first lifting platform; 22, first support plate; 31, paper separation seat; 32, blowing rod; 33, paper separation nozzle; 34, paper pressing nozzle; 35, paper delivery nozzle; 36, crank mechanism; 1, first machine; 42, positioning controller; 431, varnish oil tank; 432, oiling roller; 433, anilox roller; 434, scraper; 44, varnish coating roller; 451, UV curing lamp; 452, hot air dryer; 46, photoelectric detector; 47, first paper pressing guide roller; 48, first conveying roller; 5 1. Second machine; 52. Punching motor; 53. Indentation upper die; 540. Unwinding roller; 541. First roller; 542. Second roller; 543. Third roller; 544. First foil pressing roller; 545. Fourth roller; 546. Second foil pressing roller; 547. Fifth roller; 548. Sixth roller; 549. Winding roller; 55. Second paper pressing guide roller; 56. Third paper pressing guide roller; 57. Second conveying roller; 58. Indentation lower die; 61. Paper receiving platform; 62. Winding belt; 63. Second lifting platform; 64. Second pallet. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

[0030] like Figures 1 to 4As shown, an automatic packaging box hot stamping device described in this embodiment includes a machine base 1, a paper feeding mechanism arranged on the machine base 1, and a paper feeding and separating mechanism, a surface treatment mechanism, a creasing and hot stamping mechanism and a paper receiving mechanism arranged on the machine base 1 in sequence along the paper conveying direction;

[0031] The paper feeding mechanism is configured to provide the paper to be conveyed to the paper feeding and paper separating mechanism; the paper feeding and paper separating mechanism is arranged above the paper feeding mechanism and is configured to convey the paper to the surface treatment mechanism in sequence; the surface treatment mechanism is configured to cure varnish on the surface of the paper, detect the hot stamping mark of the paper, and send a control signal to the creasing and hot stamping mechanism; the creasing and hot stamping mechanism is configured to perform hot stamping on the surface of the paper cured with varnish according to the control signal; the paper collecting mechanism is configured to collect and stack the paper after hot stamping.

[0032] Specifically, when the automated packaging box hot stamping device of this embodiment is actually used, the paper to be hot stamped is stacked on the paper supply mechanism, and the paper supply mechanism provides the paper to be conveyed to the paper feeding and paper separating mechanism, and the paper feeding and paper separating mechanism conveys the top layer of paper of the paper supply mechanism to the surface treatment mechanism. During the paper conveying process, the surface treatment mechanism coats varnish on the surface of the paper and solidifies the varnish on the surface of the paper, and at the same time detects the hot stamping mark on the surface of the paper. When the hot stamping mark is detected, a control signal is sent to the indentation and hot stamping mechanism, which receives the control signal and performs hot stamping on the surface of the paper solidified with varnish after the paper has been conveyed for a certain period of time. The paper after the hot stamping process is conveyed to the paper receiving mechanism, and the paper receiving mechanism stacks the paper in sequence, thus completing the hot stamping process of the paper.

[0033] This embodiment realizes the automatic hot stamping of paper by arranging a paper supply mechanism, a paper feeding and separating mechanism, a surface treatment mechanism, a creasing and hot stamping mechanism and a paper receiving mechanism, thereby improving production efficiency, reducing production costs and achieving better product consistency.

[0034] like Figure 1 and Figure 2 As shown, the automatic packaging box hot stamping device described in this embodiment, in some embodiments, the surface treatment mechanism includes a first machine platform 1, a positioning controller 42, and a varnish conveying component, a varnish coating roller 44, a curing component, a photoelectric detector 46 and a first paper pressing guide roller 47 arranged above the first machine platform 1 and arranged in sequence along the paper conveying direction;

[0035] The first machine 1 is provided with a plurality of first conveying rollers 48 arranged at intervals along the paper conveying direction; the varnish conveying assembly is in abutment against the varnish coating roller 44; the varnish coating roller 44 and the first paper pressing guide roller 47 are respectively located directly above the first conveying roller 48; the positioning controller 42 is communicatively connected with the photoelectric detector 46 and the indentation and hot stamping mechanism, and the positioning controller 42 is also used to control the operation of the first paper pressing guide roller 47, the first conveying roller 48 and the varnish coating roller 44.

[0036] Specifically, in actual use, the positioning controller 42 controls the operation of each component. The first conveying roller 48 inputs the paper to the bottom of the varnish coating roller 44. The varnish conveying component coats varnish on the varnish coating roller 44. The varnish coating roller 44 transfers the varnish to the surface of the paper during the paper conveying process. When the paper passes under the curing component, the curing component cures the varnish on the surface of the paper. With the cooperation of the first conveying rollers 48 and the first paper pressing guide roller 47, the paper cured with varnish is conveyed to the indentation and hot stamping mechanism. When the hot stamping mark on the paper passes under the photoelectric detector 46, the photoelectric detector 46 generates a sensing signal and transmits the sensing signal to the positioning controller 42. The positioning controller 42 calculates the distance of the hot stamping mark to the bottom of the hot stamping area of ​​the creasing and hot stamping mechanism according to the sensing signal, and then combines the first conveying roller 48, the first paper pressing guide roller 47 and the conveying speed of the creasing and hot stamping mechanism to obtain the conveying time of the hot stamping mark to the bottom of the hot stamping area of ​​the creasing and hot stamping mechanism. After the obtained conveying time, the positioning controller 42 sends a control signal to the creasing and hot stamping mechanism, so that when the hot stamping mark on the paper reaches the bottom of the hot stamping area, the creasing and hot stamping mechanism stops conveying the paper, and then the creasing and hot stamping mechanism performs hot stamping on the surface of the paper. After the hot stamping is completed, the creasing and hot stamping mechanism continues to convey the paper to the paper receiving mechanism. In this way, continuous hot stamping of the paper is achieved.

[0037] In this embodiment, a photoelectric detector 46 is provided to detect the hot stamping mark, and the paper is accurately transported to the designated position of the indentation hot stamping mechanism through the control of the positioning controller 42, thereby ensuring the accuracy of hot stamping.

[0038] like Figure 1 and Figure 2 As shown, in the automated packaging box hot stamping device described in this embodiment, in some embodiments, the varnish delivery component includes a varnish tank 431, an oiling roller 432, an anilox roller 433 and a scraper 434; the oiling roller 432 is arranged above the varnish tank 431, and part of the oiling roller 432 is located in the varnish tank 431, the roller surface of the anilox roller 433 abuts against the roller surface of the oiling roller 432, the blade of the scraper 434 abuts against the roller surface of the anilox roller 433, and the roller surface of the anilox roller 433 abuts against the roller surface of the varnish coating roller 44.

[0039] During actual use, varnish is stored in the varnish tank 431, and the oiling roller 432 rotates to transfer part of the varnish in the varnish tank 431 to the roller surface of the oiling roller 432. During the rotation of the oiling roller 432, the varnish on its roller surface is transferred to the anilox roller 433. Under the roller pressure of the oiling roller 432 and the anilox roller 433, the varnish is fully transferred and pressed into the mesh holes of the anilox roller 433. Under the action of the scraper 434, the anilox roller 433 adjusts the amount of oil on the roller surface. As the anilox roller 433 rotates, the anilox roller 433 transfers the varnish to the roller surface of the varnish coating roller 44, thereby transferring the varnish to the surface of the paper.

[0040] like Figure 1 As shown, in the automatic hot stamping device for packaging boxes described in this embodiment, in some embodiments, the curing component includes a UV curing lamp 451 and a hot air dryer 452 arranged at intervals. In actual use, the UV curing lamp 451 is used to cure the UV varnish on the surface of the paper, and the hot air dryer 452 is used to cure the water-based varnish on the surface of the paper. With such a setting, two curing processes, namely, heating curing of water-based varnish and UV varnish UV irradiation curing, can be realized, and the structural adaptability is stronger.

[0041] like Figure 1 As shown, the automatic packaging box hot stamping device described in this embodiment, in some embodiments, the creasing and hot stamping mechanism includes a second machine platform 51 and a stamping motor 52 arranged above the second machine platform 51, a creasing upper mold 53, a hot stamping foil conveying assembly, a second pressing paper guide roller 55 and a third pressing paper guide roller 56;

[0042] The second machine platform 51 is rotatably provided with a plurality of second conveying rollers 57 arranged at intervals along the paper conveying direction. The second machine platform 51 is provided with an indentation lower mold 58 just below the indentation upper mold 53; the second paper pressing guide roller 55 and the third paper pressing guide roller 56 are respectively located just above the second conveying roller 57;

[0043] The stamping motor 52, the hot stamping foil conveying assembly, the second paper pressing guide roller 55, the third paper pressing guide roller 56, and the second conveying roller 57 are all communicatively connected to the positioning controller 42; the positioning controller 42 is also used to control the operation of the stamping motor 52, the hot stamping foil conveying assembly, the second paper pressing guide roller 55, the third paper pressing guide roller 56, and the second conveying roller 57.

[0044] Specifically, when the photoelectric detector 46 detects the hot stamping mark, the positioning controller 42 calculates the distance from the hot stamping mark to the top of the indentation lower mold 58, and then calculates the conveying time T for the hot stamping mark to reach the top of the indentation lower mold 58 in combination with the rotation speeds of the first paper pressing guide roller 47, the first conveying roller 48, the second paper pressing guide roller 55, the third paper pressing guide roller 56 and the second conveying roller 57. After the conveying time T, the hot stamping mark reaches the predetermined position, and the positioning controller 42 controls the second paper pressing guide roller 56 to move the hot stamping mark to the top of the indentation lower mold 58. 55, the third paper pressing guide roller 56 and the second conveying roller 57 stop rotating, and at the same time control the stamping motor 52 to drive the indentation upper mold 53 to press down the electrochemical aluminum hot stamping foil on the hot stamping foil conveying assembly until the indentation upper mold 53 and the indentation lower mold 58 are pressed together, and after heating, the hot stamping process is completed; the stamping motor 52 drives the indentation upper mold 53 to move up, and the indentation upper mold 53 and the indentation lower mold 58 are separated, and then the second paper pressing guide roller 55, the third paper pressing guide roller 56 and the second conveying roller 57 are controlled to continue to convey the paper after the hot stamping process.

[0045] This embodiment realizes the online operation of varnish glazing surface treatment and embossing and hot stamping of paper through the linkage of the surface treatment mechanism and the embossing and hot stamping mechanism, thereby greatly improving the production efficiency.

[0046] like Figure 1 and Figure 3 As shown, in the automatic packaging box hot stamping device described in this embodiment, in some embodiments, the hot stamping foil conveying assembly includes an unwinding roller 540, a first roller 541, a second roller 542, a third roller 543, a first foil pressing roller 544, a fourth roller 545, a second foil pressing roller 546, a fifth roller 547, a sixth roller 548, and a winding roller 549, which are sequentially arranged along the paper conveying direction; the unwinding roller 540 is wound with an electrochemical aluminum hot stamping foil, and the electrochemical aluminum hot stamping foil is sequentially wound around the first roller 541, the second roller 542, the third roller 543, the first foil pressing roller 544, the fourth roller 545, the second foil pressing roller 546, the fifth roller 547, and the sixth roller 548, and then rolled up on the winding roller 549;

[0047] The third roller 543 and the fourth roller are symmetrically arranged, the first foil pressing roller 544 and the second foil pressing roller 546 are symmetrically arranged, and the anodized aluminum hot stamping foil is in a horizontal state between the first foil pressing roller 544 and the second foil pressing roller.

[0048] like Figure 3As shown, in actual use of this embodiment, the unwinding roller 540 unwinds the electrochemical aluminum hot stamping foil, and after passing through the first passing roller 541, the second passing roller 542, the third passing roller 543, the first foil pressing roller 544, the fourth passing roller 545, the second foil pressing roller 546, the fifth passing roller 547, and the sixth passing roller 548, the winding roller 549 winds up the electrochemical aluminum hot stamping foil after the hot stamping treatment, so that the electrochemical aluminum hot stamping foil can be in a horizontal state between the first foil pressing roller 544 and the second foil pressing roller, so that the indentation upper mold 53 can press down the electrochemical aluminum hot stamping foil, and the hot stamping effect is better.

[0049] like Figure 1 As shown, in the automatic packaging box hot stamping device described in this embodiment, in some embodiments, the paper feeding mechanism includes a first lifting platform 21 arranged below the paper feeding and paper separating mechanism and a first supporting plate 22 arranged at the output end of the first lifting platform 21. In actual use, the paper to be hot stamped is stacked on the first supporting plate 22 to form a paper pile, and the first lifting platform 21 adjusts the height of the paper pile to facilitate the paper separation operation of the paper feeding and paper separating mechanism; the first lifting platform 21 can adopt an existing scissor lift mechanism.

[0050] like Figure 1 and Figure 4 As shown, in the automated packaging box hot stamping device described in this embodiment, in some embodiments, the paper feeding and separating mechanism includes a paper separating seat 31 and a blowing rod 32 movably arranged on the paper separating seat 31, a paper separating suction nozzle 33, a paper pressing blowing nozzle 34 and a paper delivering suction nozzle 35.

[0051] In actual use, the paper separation suction nozzle 33 moves downward to suck the topmost paper in the paper pile, and lifts up and tilts back to prevent double sheets of paper from being sucked up and facilitate the insertion of the paper pressing suction nozzle;

[0052] Then the paper pressing nozzle is inserted between the topmost layer of paper and the second topmost layer of paper, so as to blow air to press the paper below. At this time, the blowing rod 32 opens the air blowing path to blow air, so that the sucked paper is separated from the paper below. Then the paper delivering nozzle 35 sucks the paper. At this time, the paper delivering nozzle 35 and the paper separating nozzle 33 control the paper at the same time. Then the paper separating nozzle 33 cuts off the air path to release the paper, completing the paper handover. The paper separating nozzle 33 then rises, the paper pressing nozzle stops blowing and leaves the paper pile, and the paper delivering nozzle 35 moves toward the surface treatment mechanism to transport the paper to the surface treatment mechanism. The first conveying roller 48 of the surface treatment mechanism rotates to drive the paper to move, and the varnish coating and varnish curing treatment are carried out. This cycle continuously transports the paper to the surface treatment mechanism to complete the paper transportation.

[0053] Specifically, the paper feeding and separating mechanism also includes a crank mechanism 36 for rotatably setting the paper separating seat 31, and the paper delivery nozzle 35 is connected to the crank mechanism 36, so that under the drive of the crank mechanism 36, the paper delivery nozzle 35 can drive the sucked paper to move synchronously toward the surface processing mechanism to complete the paper delivery.

[0054] The paper feeding and separating mechanism also includes a height detection mechanism (not shown in the figure), which detects the height of the paper pile and generates a detection signal to control the first lifting platform 21 to drive the paper pile to rise so as to transport the next paper; this cycle is repeated to transport the papers to the surface treatment mechanism in turn.

[0055] like Figure 1 As shown, in the automatic packaging box hot stamping device described in this embodiment, in some embodiments, the paper collection mechanism includes a paper collection platform 61, a winding belt 62 inclined at the top of the paper collection platform 61, a second lifting platform 63 arranged on the side of the paper collection platform 61 away from the creasing and hot stamping mechanism, and a second support plate 64 arranged on the second lifting platform 63. The second lifting platform 63 can adopt an existing scissor lift mechanism

[0056] Specifically, after the embossing and hot stamping mechanism completes the hot stamping process on the paper, the paper is conveyed to the winding belt 62 driven by the second paper pressing guide roller 55, the third paper pressing guide roller 56 and the second conveying roller 57. The winding belt 62 drives the paper to be transferred to the second support plate 64. The second lifting platform 63 adjusts the height of the second support plate 64 so that the paper after the hot stamping process can be stacked on the second support plate 64.

[0057] The above is only a preferred embodiment of the present utility model, so any equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the protection scope of the present utility model patent application.

Claims

1. An automatic packaging box hot stamping device, characterized in that: It includes a machine base, a paper feeding mechanism arranged on the machine base, and a paper feeding and separating mechanism, a surface treatment mechanism, a creasing and hot stamping mechanism and a paper receiving mechanism arranged on the machine base in sequence along the paper conveying direction; The paper feeding mechanism is configured to provide the paper to be conveyed to the paper conveying and separating mechanism; The paper feeding and separating mechanism is arranged above the paper feeding mechanism and is configured to sequentially feed the paper to the surface treatment mechanism; The surface treatment mechanism is configured to cure varnish on the surface of the paper, detect the hot stamping mark of the paper, and send a control signal to the creasing and hot stamping mechanism; The embossing and hot stamping mechanism is configured to perform hot stamping on the surface of the paper on which the varnish is cured according to the control signal; The paper collection mechanism is configured to collect and stack the paper after hot stamping.

2. The automatic packaging box hot stamping device according to claim 1, characterized in that: The surface treatment mechanism includes a first machine platform, a positioning controller, and a varnish conveying assembly, a varnish coating roller, a curing assembly, a photoelectric detector, and a first paper pressing guide roller, which are arranged above the first machine platform and arranged in sequence along the paper conveying direction; The first machine is provided with a plurality of first conveying rollers arranged at intervals along the paper conveying direction; the varnish conveying assembly is in abutment with the varnish coating roller; the varnish coating roller and the first paper pressing guide roller are respectively located directly above the first conveying roller; the positioning controller is communicatively connected with the photoelectric detector and the indentation and hot stamping mechanism, and the positioning controller is also used to control the operation of the first paper pressing guide roller, the first conveying roller and the varnish coating roller.

3. The automatic hot stamping device for packaging boxes according to claim 2, characterized in that: The varnish delivery assembly includes a varnish tank, an oiling roller, an anilox roller and a scraper; the oiling roller is arranged above the varnish tank, and part of the oiling roller is located in the varnish tank, the roller surface of the anilox roller abuts against the roller surface of the oiling roller, the blade of the scraper abuts against the roller surface of the anilox roller, and the roller surface of the anilox roller abuts against the roller surface of the varnish coating roller.

4. The automatic packaging box hot stamping device according to claim 2, characterized in that: The curing assembly includes UV curing lamps and hot air dryers that are spaced apart.

5. The automatic packaging box hot stamping device according to claim 2, characterized in that: The creasing and hot stamping mechanism comprises a second machine platform and a stamping motor, a creasing upper die, a hot stamping foil conveying assembly, a second pressing paper guide roller and a third pressing paper guide roller arranged above the second machine platform; The second machine is rotatably provided with a plurality of second conveying rollers arranged at intervals along the paper conveying direction, and the second machine is provided with an indentation lower mold just below the indentation upper mold; the second paper pressing guide roller and the third paper pressing guide roller are respectively located just above the second conveying roller; The positioning controller is also used to control the operation of the stamping motor, the hot stamping foil conveying assembly, the second paper pressing guide roller, the third paper pressing guide roller, and the second conveying roller.

6. The automatic packaging box hot stamping device according to claim 5, characterized in that: The hot stamping foil conveying assembly comprises an unwinding roller, a first passing roller, a second passing roller, a third passing roller, a first foil pressing roller, a fourth passing roller, a second foil pressing roller, a fifth passing roller, a sixth passing roller, and a winding roller, which are arranged in sequence along the paper conveying direction; an electrochemical aluminum hot stamping foil is wound on the unwinding roller, and the electrochemical aluminum hot stamping foil is wound around the first passing roller, the second passing roller, the third passing roller, the first foil pressing roller, the fourth passing roller, the second foil pressing roller, the fifth passing roller, and the sixth passing roller in sequence and then wound on the winding roller; The third passing roller and the fourth passing roller are symmetrically arranged, the first foil pressing roller and the second foil pressing roller are symmetrically arranged, and the electrochemical aluminum hot stamping foil is in a horizontal state between the first foil pressing roller and the second foil pressing roller.

7. The automatic packaging box hot stamping device according to claim 1, characterized in that: The paper feeding mechanism comprises a first lifting platform arranged below the paper feeding and separating mechanism and a first supporting plate arranged at the output end of the first lifting platform.

8. The automatic packaging box hot stamping device according to claim 1, characterized in that: The paper feeding and separating mechanism comprises a paper separating seat and an air blowing rod, a paper separating suction nozzle, a paper pressing and blowing nozzle and a paper delivering suction nozzle which are movably arranged on the paper separating seat.

9. The automatic packaging box hot stamping device according to claim 1, characterized in that: The paper receiving mechanism comprises a paper receiving platform, a winding belt inclined at the top of the paper receiving platform, a second lifting platform arranged at a side of the paper receiving platform away from the creasing and hot stamping mechanism, and a second supporting plate arranged on the second lifting platform.

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