A ptp laser anodized aluminum gilding device and method

Abstract

The present application relates to the technical field of aluminum-plastic blister packaging, and particularly discloses a PTP laser electrochemical aluminum gilding device and method, which comprises a gilding roller and a printing roller for hot pressing of laser electrochemical aluminum and aluminum foil; a transition unit and a compression transmission unit are arranged at the rear end of the gilding roller and the printing roller; the transition unit is sequentially provided with a hot pressing plate, a vacuum heat insulation plate and a cooling plate in the conveying direction of the aluminum foil; a heating mechanism is arranged in the hot pressing plate, and a compression roller is arranged above the hot pressing plate to realize secondary hot pressing of the aluminum foil with the laser electrochemical aluminum; a cooling mechanism is arranged in the cooling plate to rapidly cool the aluminum foil after the secondary hot pressing; the vacuum heat insulation plate is used to isolate the hot pressing plate and the cooling plate; and the compression transmission unit is used to realize parallel arrangement of the aluminum foil above the hot pressing plate and the cooling plate and to make the aluminum foil have a small gap with the hot pressing plate and the cooling plate. The present application can solve the problem that the existing gilding machine is prone to causing the gilding layer to fall off.

Description

Technical Field

[0001] This invention relates to the field of aluminum-plastic blister packaging technology, specifically to a PTP laser electroplating aluminum hot stamping device and method. Background Technology

[0002] The aluminum-plastic blister packaging for pharmaceuticals, also known as blister packaging or PTP (press-through packaging), involves first blistering a transparent plastic sheet, then filling the grooves with solid medicines such as tablets, pills, granules, or capsules, and finally heating and bonding it to an aluminum foil sheet coated with an adhesive to form an independent, sealed package.

[0003] Traditional PTP consists of an AL (aluminum foil) layer with a printed pattern and protective layer on one side, and a VC (capsule adhesive) layer on the other (which is heat-sealed with PVC or PVDC to form a blister). The traditional PTP structure is: OP (protective layer) / printed layer / AL (aluminum foil layer) / VC (adhesive layer), and it lacks anti-counterfeiting features. Laser-cut electroplated aluminum foil PTP utilizes the strong anti-counterfeiting properties of electroplated aluminum foil, transferring the aluminum foil to the PTP graphic surface.

[0004] Laser electroplated aluminum foil PTP is produced by using a hot stamping machine to hot stamp laser electroplated aluminum foil onto the surface of aluminum foil, giving the PTP a counterfeit-proof function.

[0005] The working principle of a hot stamping machine can be simply divided into three steps: heating, pressure and cooling. It heats the electroplated aluminum to a certain temperature through a heating plate or heating roller, then uses pressure to stamp the electroplated aluminum onto the surface of the aluminum foil, and then cools it.

[0006] Existing hot stamping machines mainly employ rotary hot stamping, which involves feeding electroplated aluminum foil and aluminum paper between a hot stamping roller and a substrate roller. The hot stamping roller is heated, and the pressure between the roller and the substrate roller is used to stamp the electroplated aluminum foil onto the surface. However, existing hot stamping machines have the following problems: after the electroplated aluminum foil is stamped onto the aluminum foil, it still needs to travel a certain distance to the cooling station. This prevents the aluminum foil from cooling immediately after stamping, resulting in poor curing and a tendency for the hot stamping layer to peel off. Summary of the Invention

[0007] The purpose of this invention is to provide a PTP laser electroplated aluminum hot stamping device and method to solve the problem that existing hot stamping machines easily cause the hot stamping layer to fall off.

[0008] This invention is achieved through the following technical solution:

[0009] A PTP laser electroplated aluminum hot stamping apparatus includes a hot stamping roller and a printing roller for hot pressing laser electroplated aluminum and aluminum foil; a transition unit and a pressing and conveying unit are provided at the rear end of the hot stamping roller and the printing roller.

[0010] The transition unit is provided with a hot press plate, a vacuum insulation plate and a cooling plate in sequence in the aluminum foil conveying direction;

[0011] The hot press plate is equipped with a heating mechanism, and a pressure roller is provided above the hot press plate. The hot press plate and the pressure roller are used to achieve secondary hot pressing of the aluminum foil with laser electroplated aluminum foil.

[0012] The cooling plate is equipped with a cooling mechanism, which is used to rapidly cool the aluminum foil that has undergone secondary hot pressing.

[0013] The vacuum insulation plate is used to isolate the hot press plate and the cooling plate;

[0014] The pressing and conveying unit is used to ensure that the aluminum foil is arranged parallel above the hot press plate and the cooling plate, and that there is a small gap between the aluminum foil and the hot press plate and the cooling plate.

[0015] The present invention uses hot stamping rollers and printing rollers to hot press laser electroplated aluminum foil and aluminum foil to achieve hot stamping of laser electroplated aluminum foil, which is a prior art. In the prior art, the aluminum foil after hot stamping by hot stamping rollers and printing rollers is held under pressure and then cooled, which results in an excessively large transmission distance between hot stamping and cooling. After hot stamping, the laser electroplated aluminum foil cannot be cured quickly, which makes it easy for the cooled laser electroplated aluminum foil to peel off from the aluminum foil.

[0016] The transition unit of this invention is provided with a hot press plate, a vacuum insulation plate, and a cooling plate in sequence in the aluminum foil conveying direction. Under the combined action of the hot press plate and the pressure roller, a second hot press is achieved on the aluminum foil with laser electroplated aluminum foil, which not only improves the hot press effect but also has a transition function. When the aluminum foil after the second hot press is transferred to the cooling plate, due to the short distance between the hot press plate and the cooling plate, which is only separated by a vacuum insulation plate, rapid cooling is achieved through the cooling plate, so that the laser electroplated aluminum foil after the second hot press is quickly solidified, thereby improving the bonding force between the laser electroplated aluminum foil and the aluminum foil.

[0017] Furthermore, the plate-mounted structure used in the secondary hot pressing process of this invention, compared with the round-to-round method, can increase the contact area during secondary hot pressing and improve the hot pressing effect.

[0018] Meanwhile, since the hot press plate and the cooling plate have completely opposite temperature requirements due to their functions, one needs a heating temperature and the other needs a cooling temperature, if the two are directly connected or close to each other, their temperatures will affect each other, thereby affecting the heating effect of the hot press plate and the cooling effect of the cooling plate. Therefore, the present invention sets a vacuum insulation plate between the hot press plate and the cooling plate. The vacuum insulation plate is vacuum-insulated, and the heat exchange between the hot press plate and the cooling plate is isolated by the vacuum.

[0019] The purpose of setting up the pressing and transmission unit in this invention is to enable the aluminum foil to be transmitted in parallel above the hot press plate and the cooling plate with a very small gap. This ensures the heating effect of the hot press plate and the cooling effect of the cooling plate, while avoiding the problem of high friction during aluminum foil transmission caused by the aluminum foil being in contact with the hot press plate and the cooling plate.

[0020] Furthermore, the pressing and conveying unit includes a guide roller, a first pressing member, a second pressing member, a third pressing member, and a fourth pressing member;

[0021] The guide roller is positioned above the vacuum insulation plate;

[0022] The first, second, third, and fourth clamping components are arranged sequentially along the aluminum foil conveying direction; the second and third clamping components are respectively arranged on both sides of the guide roller; the first and fourth clamping components are respectively arranged at both ends of the transition unit, and the heights of the first, second, third, and fourth clamping components are adjustable.

[0023] The first and second clamping components are used to control the aluminum foil above the hot press plate, while the third and fourth clamping components are used to control the aluminum foil above the cooling plate.

[0024] Furthermore, the first pressing component includes a first telescopic rod, the lower end of which is provided with a first pressing roller for pressing aluminum foil; the second pressing component includes a second telescopic rod, the lower end of which is provided with a second pressing roller for pressing aluminum foil; the third pressing component includes a third telescopic rod, the lower section of which is provided with a third pressing roller; and the fourth pressing component includes a fourth telescopic rod, the lower end of which is provided with a fourth pressing roller.

[0025] Specifically, the first, second, third, and fourth telescopic rods can be hydraulic cylinders, and the extension and retraction are achieved by controlling the stroke of the hydraulic cylinders through a control unit.

[0026] The first, second, third, and fourth pressing rollers are preferably arranged in a rotating manner, which can both press the aluminum foil and guide it during the aluminum foil transport process.

[0027] Furthermore, it also includes a control unit and an infrared sensor;

[0028] The infrared sensor is used to collect the gap between the upper surface of the hot press plate and the aluminum foil and the upper surface of the cooling plate and the aluminum foil in real time, and transmits the collected gap to the control unit. The control unit determines whether to adjust the height of the first clamping member, the second clamping member, the third clamping member and the fourth clamping member based on the collected gap. If adjustment is required, the control unit controls the first clamping member and / or the second clamping member and / or the third clamping member and / or the fourth clamping member to extend and retract in the vertical direction.

[0029] Since the gap between the aluminum foil and the hot and cooling plates should not be too large, preferably 1-2 mm, the control unit and infrared sensor can effectively control the gap between the aluminum foil and the hot and cooling plates to ensure the heating and cooling effects of the aluminum foil.

[0030] Furthermore, it also includes a temperature sensor, which is used to collect the temperature of the hot press plate and the temperature of the cooling plate in real time, and transmit the collected temperature to the control unit. The control unit adjusts the heating mechanism and the cooling mechanism, or adjusts the height of the first clamping member, the second clamping member, the third clamping member and the fourth clamping member according to the collected temperature.

[0031] Since there are certain requirements for achieving uniform temperature during the secondary hot pressing and cooling of aluminum foil, the heating and cooling mechanisms can be controlled by collecting temperature data to adjust the temperature of the heating and cooling plates, ensuring that their temperatures meet the requirements for secondary hot pressing and cooling.

[0032] Meanwhile, the aluminum foil is only in contact with the hot press plate at the hot pressing position, that is, between the pressure roller and the hot press plate. At other positions, there is a certain gap between the aluminum foil and the hot press plate. In order to ensure the effect of secondary hot pressing and cooling, temperature transition, i.e., heat preservation, is required before and after the pressure roller to ensure that the temperature difference between the first hot pressing and the second hot pressing is not too large. However, there is a large temperature difference between the second hot pressing and cooling. Therefore, the gap between the aluminum foil and the hot press plate and the gap between the aluminum foil and the cooling plate affect the temperature of the aluminum foil. The aluminum foil temperature can be controlled by adjusting the height of the first, second, third, and fourth pressing parts.

[0033] Furthermore, the hot press plate has a hollow structure and is provided with a first inlet and a first outlet. The circulation of the high-temperature medium inside the hot press plate is achieved through the first inlet and the first outlet. The hot press plate is made of a thermally conductive material, and the high-temperature medium includes high-temperature steam.

[0034] Furthermore, the cooling plate has a hollow structure, with a first inlet and a first outlet. A cooling pipe is installed inside the cooling plate, and the cooling pipe is connected to a cooler installed on the outer wall of the cooling plate through the first inlet and the first outlet to form a circulation loop. The cooling plate is made of a thermally conductive material.

[0035] Furthermore, a heat insulation plate is provided inside the cooling plate. The heat insulation plate is used to divide the interior of the cooling plate into a cooling chamber and a transition chamber, and the heat insulation plate is used to isolate the heat transfer inside the cooling plate.

[0036] The cooling pipe is installed inside the cooling chamber;

[0037] The sidewall of the transition chamber is fitted with an annular heat insulation element, which is arranged parallel to the heat insulation plate and perpendicular to the aluminum foil transmission direction, i.e., the axial direction of the annular heat insulation element is the aluminum foil transmission direction; the annular heat insulation element is used to isolate the heat transfer from the sidewall of the cooling plate.

[0038] Both the annular heat insulation component and the heat insulation plate are made of heat insulation material.

[0039] The heat insulation material and the heat conduction material of the present invention are both existing technologies.

[0040] Furthermore, a first step and a second step are formed on the upper surface of the hot press plate and the cooling plate, respectively. The vacuum insulation plate is provided with flanges corresponding to the first step and the second step. The cooperation between the flange and the first step and the cooperation between the flange and the second step enables the vacuum insulation plate to be connected between the hot press plate and the cooling plate. The tops of the vacuum insulation plate, the hot press plate and the cooling plate are flush.

[0041] The lower ends of the hot press plate and the cooling plate are respectively provided with a first positioning block and a second positioning block for supporting the vacuum insulation plate.

[0042] The hot stamping method of the PTP laser electroplated aluminum hot stamping device described above includes the following steps:

[0043] S1. The laser electroplated aluminum foil and aluminum foil are fed between the hot stamping roller and the printing roller for one hot stamping process;

[0044] S2. The aluminum foil with laser electroplated aluminum foil is conveyed to the top of the transition unit. Under the pressing action of the pressing and conveying unit, the aluminum foil is arranged parallel to the hot plate and the cooling plate with a small gap between the aluminum foil and the hot plate and the cooling plate, so that the aluminum foil is hot-stamped a second time on the hot plate.

[0045] S3. The aluminum foil that has undergone secondary hot stamping is conveyed to the cooling plate and rapidly cooled, achieving rapid curing of the laser electroplated aluminum after hot stamping.

[0046] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0047] 1. This invention provides a transition unit at the rear end of the hot stamping roller and the printing roller. The transition unit is equipped with a hot press plate, a vacuum insulation plate and a cooling plate in sequence in the aluminum foil conveying direction. Under the combined action of the hot press plate and the pressure roller, the aluminum foil with laser electroplated aluminum foil is hot-pressed twice. This not only improves the hot pressing effect but also has a transition function. When the aluminum foil after the second hot pressing is transferred to the cooling plate, it is rapidly cooled, which allows the laser electroplated aluminum foil after the second hot pressing to solidify quickly and improve the bonding force between the laser electroplated aluminum foil and the aluminum foil.

[0048] 2. The present invention provides a heat insulation plate inside the cooling plate and an annular heat insulation element embedded in the side wall of the transition chamber. The annular heat insulation element is used to isolate heat transfer from the side wall of the cooling plate, and the heat insulation plate is used to isolate heat transfer from the internal space of the cooling plate. When the vacuum heat insulation plate fails, the cooling plate and the hot press plate still have a heat insulation effect. Attached Figure Description

[0049] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0050] Figure 1 This is a schematic diagram of the PTP laser electroplating aluminum hot stamping device of the present invention;

[0051] Figure 2 This is a schematic diagram of the transition mechanism;

[0052] Figure 3 This is a schematic diagram of the cooling plate structure.

[0053] The attached diagram shows the markings and corresponding component names:

[0054] 1-Electroplated aluminum raw material roller; 2-Aluminum foil raw material roller; 3-Hot stamping roller; 4-Printing roller; 5-Hot press plate; 6-Vacuum heat insulation plate; 7-Cooling plate; 8-First pressing component; 9-Second pressing component; 10-Third pressing component; 11-Fourth pressing component; 12-Pressure roller; 13-Guide roller; 14-First directional roller; 15-Second directional roller; 16-Rewinding roller; 51-First positioning block; 61-Flange; 71-Second positioning block; 72-Cooling pipe; 73-Heat insulation plate; 74-Annular heat insulation component; 75-Second step; 81-First telescopic rod; 82-First pressing roller; 91-Second telescopic rod; 92-Second pressing roller; 101-Third telescopic rod; 102-Third pressing roller; 111-Fourth telescopic rod; 112-Fourth pressing roller. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0056] Example 1:

[0057] like Figures 1-3As shown, a PTP laser electroplated aluminum hot stamping device includes a hot stamping roller 3 and a printing roller 4 for hot pressing laser electroplated aluminum and aluminum foil, and also includes an electroplated aluminum material roller 1, an aluminum foil material roller 2, a first orientation roller 14, a second orientation roller 15, and a take-up roller 16; the electroplated aluminum material roller 1 is used to roll up the laser electroplated aluminum and convey it between the hot stamping roller 3 and the printing roller 4, and the aluminum foil material roller 2 is used to roll up the aluminum foil and convey it between the hot stamping roller 3 and the printing roller 4.

[0058] A transition unit and a pressing and conveying unit are provided at the rear end of the hot stamping roller 3 and the printing roller 4;

[0059] The transition unit is provided with a hot press plate 5, a vacuum insulation plate 6 and a cooling plate 7 in sequence in the aluminum foil conveying direction; a heating mechanism is provided inside the hot press plate 5, and a pressure roller 12 is provided above the hot press plate 5. The aluminum foil with laser electroplated aluminum foil is hot-pressed through the hot press plate 5 and the pressure roller 12.

[0060] In a specific case, the hot press plate 5 has a hollow structure and is provided with a first inlet and a first outlet. The circulation of the high-temperature medium inside the hot press plate 5 is achieved through the first inlet and the first outlet. The hot press plate 5 is made of a thermally conductive material, and the high-temperature medium includes high-temperature steam.

[0061] In one specific case, the cooling plate 7 is provided with a cooling mechanism, which is used to rapidly cool the aluminum foil that has undergone secondary hot pressing.

[0062] In a specific case, the cooling plate 7 is a hollow structure, with a first inlet and a first outlet. A cooling pipe 72 is installed inside the cooling plate 7, and the cooling pipe 72 is connected to a cooler installed on the outer wall of the cooling plate 7 through the first inlet and the first outlet to form a circulation loop. The cooling plate 7 is made of a thermally conductive material.

[0063] In a preferred embodiment, a heat insulation plate 73 is provided inside the cooling plate 7, which is used to divide the interior of the cooling plate 7 into a cooling chamber and a transition chamber; the cooling pipe 72 is disposed inside the cooling chamber; an annular heat insulation member 74 is embedded in the side wall of the transition chamber, the annular heat insulation member 74 is arranged parallel to the heat insulation plate 73, and the annular heat insulation member 74 is perpendicular to the aluminum foil transport direction; both the annular heat insulation member 74 and the heat insulation plate 73 are made of heat insulation material.

[0064] By providing a heat insulation plate 73 inside the cooling plate 7 and embedding an annular heat insulation member 74 on the side wall of the transition chamber, the annular heat insulation member 74 is used to isolate the heat transfer of the side wall of the cooling plate 7, and the heat insulation plate 73 is used to isolate the heat transfer of the internal space of the cooling plate 7. When the vacuum heat insulation plate 6 fails, the cooling plate 7 and the hot press plate 5 still have a heat insulation effect.

[0065] The vacuum insulation plate 6 is used to isolate the hot press plate 5 and the cooling plate 7; one of the connection methods between the vacuum insulation plate 6, the hot press plate 5, and the cooling plate 7 is as follows:

[0066] The upper surfaces of the hot press plate 5 and the cooling plate 7 are respectively formed with a first step and a second step 75. The vacuum insulation plate 6 is provided with a flange 61 corresponding to the first step and the second step 75. The cooperation between the flange 61 and the first step and the cooperation between the flange 61 and the second step 75 enables the vacuum insulation plate 6 to be connected between the hot press plate 5 and the cooling plate 7. The tops of the vacuum insulation plate 6, the hot press plate 5 and the cooling plate 7 are flush.

[0067] Preferably, the lower ends of the hot press plate 5 and the cooling plate 7 are respectively provided with a first positioning block 51 and a second positioning block 71 for supporting the vacuum insulation plate 6. More preferably, the upper surfaces of the first positioning block 51 and the second positioning block 71 are respectively provided with a first protrusion and a second protrusion, and the bottom of the vacuum insulation plate 6 is provided with a groove that cooperates with the first protrusion and the second protrusion.

[0068] The vacuum insulation panel 6 has a hollow structure, and the interior of the vacuum insulation panel 6 is in a vacuum state.

[0069] The pressing and conveying unit is used to ensure that the aluminum foil is arranged parallel above the hot press plate 5 and the cooling plate 7, and that there is a small gap between the aluminum foil and the hot press plate 5 and the cooling plate 7.

[0070] Specifically, the pressing and transmission unit includes a guide roller 13, a first pressing member 8, a second pressing member 9, a third pressing member 10, and a fourth pressing member 11;

[0071] The guide roller 13 is positioned above the vacuum insulation plate 6;

[0072] The first clamping member 8, the second clamping member 9, the third clamping member 10, and the fourth clamping member 11 are arranged sequentially along the aluminum foil conveying direction; the second clamping member 9 and the third clamping member 10 are respectively arranged on both sides of the guide roller 13; the first clamping member 8 and the fourth clamping member 11 are respectively arranged at both ends of the transition unit, and the height of the first clamping member 8, the second clamping member 9, the third clamping member 10, and the fourth clamping member 11 is adjustable.

[0073] In one specific example, the first pressing member 8 includes a first telescopic rod 81, the lower end of which is provided with a first pressing roller 82 for pressing aluminum foil; the second pressing member 9 includes a second telescopic rod 91, the lower end of which is provided with a second pressing roller 92 for pressing aluminum foil; the third pressing member 10 includes a third telescopic rod 101, the lower section of which is provided with a third pressing roller 102; and the fourth pressing member 11 includes a fourth telescopic rod 111, the lower end of which is provided with a fourth pressing roller 112.

[0074] Preferably, the first, second, third, and fourth pressing rollers are rotatably arranged, which can both press the aluminum foil and guide it during the aluminum foil transport process. Specifically, a U-shaped plate can be set at the lower end of the telescopic rod, and the two ends of the pressing rollers can be rotatably set on the two side walls of the U-shaped plate.

[0075] The second orientation roller 15 and the take-up roller 16 are used to convey the cooled aluminum foil to the take-up roller 16 for winding.

[0076] In a preferred embodiment, a control unit and an infrared sensor are also included;

[0077] The infrared sensor is used to collect the gap between the upper surface of the hot press plate 5 and the aluminum foil and the gap between the upper surface of the cooling plate 7 and the aluminum foil in real time, and transmits the collected gap to the control unit. The control unit determines whether to adjust the height of the first pressing member 8, the second pressing member 9, the third pressing member 10 and the fourth pressing member 11 based on the collected gap. If adjustment is required, the control unit controls the first pressing member 8 and / or the second pressing member 9 and / or the third pressing member 10 and / or the fourth pressing member 11 to extend and retract in the vertical direction.

[0078] In a preferred embodiment, a temperature sensor is also included, which is used to collect the temperature of the hot press plate 5 and the temperature of the cooling plate 7 in real time and transmit the collected temperature to the control unit. The control unit adjusts the heating mechanism and the cooling mechanism, or adjusts the height of the first pressing member 8, the second pressing member 9, the third pressing member 10 and the fourth pressing member 11 according to the collected temperature.

[0079] The hot stamping method of the PTP laser electroplated aluminum hot stamping device described in this embodiment includes the following steps:

[0080] S1. The laser electroplated aluminum foil and aluminum foil are fed between the hot stamping roller 3 and the printing roller 4 for one hot stamping.

[0081] S2. The aluminum foil with laser electroplated aluminum foil is conveyed to the top of the transition unit. Under the pressing action of the pressing and conveying unit, the aluminum foil is arranged parallel above the hot press plate 5 and the cooling plate 7, and there is a small gap between the aluminum foil and the hot press plate 5 and the cooling plate 7, so that the aluminum foil is hot-stamped a second time on the hot press plate 5.

[0082] S3. The aluminum foil that has undergone secondary hot stamping is conveyed to the cooling plate 7 and rapidly cooled, so as to achieve rapid curing of the laser electroplated aluminum after hot stamping.

[0083] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0084] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the disclosed technical content. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

Claims

1. A PTP laser electroplated aluminum hot stamping apparatus, comprising a hot stamping roller (3) and a printing roller (4) for hot pressing laser electroplated aluminum and aluminum foil; characterized in that, A transition unit and a pressing and conveying unit are provided at the rear end of the hot stamping roller (3) and the printing roller (4); The transition unit is provided with a hot press plate (5), a vacuum insulation plate (6) and a cooling plate (7) in sequence in the aluminum foil conveying direction. The hot press plate (5) is equipped with a heating mechanism, and a pressure roller (12) is provided above the hot press plate (5). The hot press plate (5) and the pressure roller (12) are used to achieve secondary hot pressing of the aluminum foil with laser electroplated aluminum foil. The cooling plate (7) is provided with a cooling mechanism, and the cooling plate (7) is used to rapidly cool the aluminum foil that has undergone secondary hot pressing. The vacuum insulation plate (6) is used to isolate the hot press plate (5) and the cooling plate (7); The pressing and conveying unit is used to make the aluminum foil parallel to the hot press plate (5) and the cooling plate (7) and to make the aluminum foil have a small gap with the hot press plate (5) and the cooling plate (7); The pressing and transmission unit includes a guide roller (13), a first pressing component (8), a second pressing component (9), a third pressing component (10), and a fourth pressing component (11). The guide roller (13) is positioned above the vacuum insulation plate (6); The first clamping member (8), the second clamping member (9), the third clamping member (10), and the fourth clamping member (11) are arranged sequentially along the aluminum foil conveying direction; the second clamping member (9) and the third clamping member (10) are respectively arranged on both sides of the guide roller (13); the first clamping member (8) and the fourth clamping member (11) are respectively arranged at both ends of the transition unit, and the height of the first clamping member (8), the second clamping member (9), the third clamping member (10), and the fourth clamping member (11) is adjustable; The first pressing member (8) includes a first telescopic rod (81), and a first pressing roller (82) for pressing aluminum foil is provided at the lower end of the first telescopic rod (81); the second pressing member (9) includes a second telescopic rod (91), and a second pressing roller (92) for pressing aluminum foil is provided at the lower end of the second telescopic rod (91); the third pressing member (10) includes a third telescopic rod (101), and a third pressing roller (102) is provided at the lower section of the third telescopic rod (101); the fourth pressing member (11) includes a fourth telescopic rod (111), and a fourth pressing roller (112) is provided at the lower end of the fourth telescopic rod (111). It also includes a control unit and an infrared sensor; The infrared sensor is used to collect the gap between the upper end face of the hot press plate (5) and the aluminum foil and the gap between the upper end face of the cooling plate (7) and the aluminum foil in real time, and transmit the collected gap to the control unit. The control unit determines whether to adjust the height of the first pressing member (8), the second pressing member (9), the third pressing member (10) and the fourth pressing member (11) according to the collected gap. If adjustment is required, the control unit controls the first pressing member (8) and / or the second pressing member (9) and / or the third pressing member (10) and / or the fourth pressing member (11) to extend and retract in the vertical direction.

2. The PTP laser electroplating aluminum hot stamping device according to claim 1, characterized in that, It also includes a temperature sensor, which is used to collect the temperature of the hot press plate (5) and the temperature of the cooling plate (7) in real time and transmit the collected temperature to the control unit. The control unit adjusts the heating mechanism and the cooling mechanism, or adjusts the height of the first pressing member (8), the second pressing member (9), the third pressing member (10) and the fourth pressing member (11) according to the collected temperature.

3. The PTP laser electroplating aluminum hot stamping device according to claim 1, characterized in that, The hot press plate (5) has a hollow structure. The hot press plate (5) is provided with a first inlet and a first outlet. The circulation of the high-temperature medium inside the hot press plate (5) is achieved through the first inlet and the first outlet. The hot press plate (5) is made of thermally conductive material. The high-temperature medium includes high-temperature steam.

4. The PTP laser electroplating aluminum hot stamping device according to claim 1, characterized in that, The cooling plate (7) is a hollow structure. The cooling plate (7) is provided with a first inlet and a first outlet. The cooling pipe (72) is provided inside the cooling plate (7). The cooling pipe (72) is connected to the cooler provided on the outer wall of the cooling plate (7) through the first inlet and the first outlet to form a circulation loop. The cooling plate (7) is made of thermally conductive material.

5. The PTP laser electroplating aluminum hot stamping device according to claim 4, characterized in that, The cooling plate (7) is provided with a heat insulation plate (73), which is used to divide the interior of the cooling plate (7) into a cooling chamber and a transition chamber; The cooling pipe (72) is installed in the cooling chamber; The sidewall of the transition chamber is fitted with an annular heat insulation element (74), which is arranged parallel to the heat insulation plate (73) and perpendicular to the aluminum foil transmission direction; Both the annular heat insulation element (74) and the heat insulation plate (73) are made of heat insulation material.

6. A PTP laser electroplating aluminum hot stamping device according to any one of claims 1-5, characterized in that, The upper surfaces of the hot press plate (5) and the cooling plate (7) are respectively formed with a first step and a second step (75). The vacuum insulation plate (6) is provided with a flange (61) corresponding to the first step and the second step (75). The flange (61) and the first step cooperate with each other and the flange (61) and the second step (75) connect the vacuum insulation plate (6) between the hot press plate (5) and the cooling plate (7). The tops of the vacuum insulation plate (6), the hot press plate (5) and the cooling plate (7) are flush. The lower ends of the hot press plate (5) and the cooling plate (7) are respectively provided with a first positioning block (51) and a second positioning block (71) for supporting the vacuum insulation plate (6).

7. The hot stamping method of the PTP laser electroplated aluminum hot stamping apparatus as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. The laser electroplated aluminum foil and aluminum foil are fed between the hot stamping roller (3) and the printing roller (4) for one hot stamping. S2. The aluminum foil with laser electroplated aluminum foil is conveyed to the top of the transition unit. Under the pressing action of the pressing and conveying unit, the aluminum foil is arranged parallel above the hot plate (5) and the cooling plate (7) with a small gap between the aluminum foil and the hot plate (5) and the cooling plate (7); so that the aluminum foil is hot-stamped a second time on the hot plate (5). S3. The aluminum foil that has been hot-stamped twice is transported to the cooling plate (7) and cooled quickly to achieve rapid curing of the laser electroplated aluminum after hot stamping.

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