A three-dimensional transfer printing apparatus for surface treatment of aluminum materials and an operating method thereof

Abstract

The application relates to the field of aluminum material surface treatment and discloses a three-dimensional transfer equipment based on aluminum material surface treatment, which comprises a rack, a hot pressing component and a pressure supply assembly arranged on the rack, the hot pressing component comprises two hot pressing assemblies arranged symmetrically in an up-down mode, the hot pressing assembly comprises a side connecting seat, an inner flexible support body and a heating roller, the inner flexible support body is coaxially arranged in the heating roller, the end of the inner flexible support body is provided with a side support, the side support is fixedly connected with the side connecting seat, the end of the heating roller is movably connected with the side support through a bearing, the outer circular surface of the inner flexible support body is provided with arc-shaped grooves, the arc-shaped grooves are arranged in an array along the circumferential direction of the inner flexible support body, a heat reflecting film is arranged on the groove wall of each arc-shaped groove, an infrared heating pipe is arranged in each arc-shaped groove, the extending direction of the infrared heating pipe is parallel to the axis of the heating roller, and the end of the infrared heating pipe is connected with the side support.

Description

Technical Field

[0001] This invention relates to the field of aluminum surface treatment, specifically to the field of aluminum three-dimensional transfer printing, and particularly to a three-dimensional transfer printing device for aluminum surface treatment and its operating method. Background Technology

[0002] Aluminum 3D transfer printing (commonly known as 3D transfer printing or 3D heat transfer printing) is a process that creates three-dimensional textures and patterns on the surface of aluminum profiles. It uses heat transfer technology to transfer a transfer film with a three-dimensional effect to the surface of aluminum, giving it realistic effects such as wood grain, stone grain, and leather grain, while also providing a tactile, textured feel.

[0003] The steps for 3D transfer printing on aluminum are: aluminum pretreatment - primer spraying - film application and heating - cooling and peeling. Among these steps, the uniformity of heating is a crucial factor affecting the quality of the 3D transfer result. Excessive heating temperature can easily lead to blurred / collapsed textures and color distortion, while insufficient heating temperature can result in incomplete / missing textures and poor adhesion. Therefore, ensuring uniform heating is essential during the 3D transfer printing process on aluminum.

[0004] Heated rollers, also known as contact heated rollers or hot roller transfer, are a type of 3D transfer printing technology for aluminum. Specifically, an aluminum plate / sheet pre-coated with a primer is bonded to a 3D transfer film. The bonded material passes through the gap between one or more pairs of heated rollers. The heated rollers simultaneously provide heat (through internal electric heating tubes or hot oil circulation) and pressure, causing the transfer film coating to melt and transfer instantaneously. After leaving the heated rollers, the material solidifies in a cooling section (usually cooling rollers or air cooling), and then the carrier film of the transfer film is automatically peeled off. Therefore, uniform temperature distribution on the heated rollers is essential.

[0005] In the existing technology, the heating roller is usually heated by placing multiple electric heating wires inside the heating roller. Therefore, uneven distribution of electric heating wires can easily occur, resulting in differences in axial and radial heat zones, which affects the quality of the final transfer result.

[0006] Based on the above, the present invention proposes a three-dimensional transfer printing device for aluminum surface treatment and its operation method. Summary of the Invention

[0007] To address the problems mentioned in the background above, the present invention provides a three-dimensional transfer printing device for aluminum surface treatment and its operating method.

[0008] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows.

[0009] A three-dimensional transfer printing device for aluminum surface treatment includes a frame, on which a hot pressing component and a pressure supply component are arranged. The hot pressing component includes two hot pressing components arranged symmetrically in the upper and lower parts. The hot pressing component includes a side connecting seat, an inner flexible support body and a heating roller.

[0010] The side connection seat of the upper hot pressing assembly is in a sliding guide engagement with the frame in the vertical direction, while the side connection seat of the lower hot pressing assembly is fixedly connected to the frame.

[0011] The heating roller is a hollow, horizontally arranged cylinder, and the inner flexible support is a ring-shaped structure located coaxially inside the heating roller. The heating roller is made of a heat-conducting material, and the inner flexible support is made of a soft material with elastic properties.

[0012] The end of the inner flexible support is provided with a side support, which is fixedly connected to the side connecting seat. The end of the heating roller is movably connected to the side support through a bearing.

[0013] The outer circular surface of the inner flexible support is provided with an arc-shaped groove. Several arc-shaped grooves are arranged in an array along the circumference of the inner flexible support. Each arc-shaped groove has a heat-reflective film on its groove wall and an infrared heating tube in each arc-shaped groove. The extension direction of the infrared heating tube is parallel to the axis of the heating roller, and the end of the infrared heating tube is connected to the side support.

[0014] Furthermore, a vertically arranged transmission shaft is provided on the frame, and a motor is provided at the input end of the transmission shaft;

[0015] The end of the heating roller is connected to the transmission shaft via a power transmission component.

[0016] Furthermore, the driving component of the power transmission component of the upper hot pressing assembly is connected to the transmission shaft via a connector, and when the driving component moves together with the upper hot pressing assembly, the driving component and the transmission shaft are kept connected via the connector.

[0017] Furthermore, an inner cylinder is nested inside the inner flexible support body, and the inner cylinder is driven by the linear module installed on the side support to move within the inner flexible support body.

[0018] The outer surface of the inner cylinder is provided with a convex ring, and the outer diameter of the convex ring is larger than the inner diameter of the inner flexible support.

[0019] Furthermore, multiple convex rings are arranged in an array along the axis of the inner cylinder.

[0020] Furthermore, the pressure supply assembly includes a vertically arranged rack and a gear meshing with the rack. The rack is mounted on a side connecting seat of the upper hot pressing assembly. A connecting shaft parallel to the heating roller is provided on the frame, and the gear is mounted on the connecting shaft.

[0021] The pressure supply assembly also includes a counterweight, a first drive component, and a second drive component;

[0022] The counterweight is slidably mounted on the frame in a vertical direction;

[0023] The driving component includes a vertical cylindrical shell, inside which a vertical piston is fitted. A vertical piston rod is provided at the upper end of the vertical piston, and the upper end of the vertical piston rod is connected to the bottom of the counterweight.

[0024] The second driving component includes a horizontal cylinder shell that extends horizontally and is perpendicular to the heating roller. A horizontal piston is fitted inside the cylinder shell. A horizontal piston rod is provided at one end of the horizontal piston. The end of the horizontal piston rod extends out of the cylinder shell and is connected to the connecting shaft through a connecting rod.

[0025] The vertical and horizontal cylinder shells are connected by a connecting pipe. When the weight of the counterweight is applied to the vertical piston rod, it can push the hydraulic medium in the vertical cylinder shell into the horizontal cylinder shell, causing the horizontal piston rod to move. When the horizontal piston rod moves, it drives the connecting shaft to rotate through the connecting rod. The connecting shaft rotates together with the gear, and the gear drives the rack to move down.

[0026] Furthermore, the counterweight has protrusions on its side, and the frame is equipped with a lifting rod and a linear module for driving the lifting rod to move vertically. The end of the lifting rod is equipped with a hook to catch the protrusions.

[0027] Furthermore, a water tank is provided on the upper surface of the counterweight.

[0028] An operating method for a 3D transfer printing device for aluminum surface treatment:

[0029] Step 1: The aluminum plate with the primer has been coated with a 3D transfer film and then bonded together to form a bonded body, which is then passed through the area between the heating rollers of the two hot pressing components.

[0030] Step 2: Heat the heating roller using an infrared heating tube;

[0031] At the same time, the heat from the side of the infrared heating tube away from the heating roller is reflected back to the heating roller by the heat-reflective film;

[0032] At the same time, the inner cylinder is driven by the linear module to reciprocate within the inner flexible support. During the movement, since the outer diameter of the convex ring is larger than the inner diameter of the inner flexible support, the inner wall of the inner flexible support can be made to undulate through the convex ring, thereby causing the heat reflective film to undulate in a wave-like manner and continuously change the direction of heat radiation reflection.

[0033] At the same time, the heating roller is driven by a motor to rotate, thereby heating the bonding body while pulling the bonding body to move, thus realizing the heat transfer of the bonding body.

[0034] Compared with the prior art, the beneficial effects of this invention are as follows:

[0035] Technical effect 1: The heating roller is radiated and heated by infrared heating tubes that are evenly distributed in an array. Combined with the rotating heating roller, the heating roller can be heated more evenly.

[0036] Technical effect 2: The heat reflected by the heat reflective film reflects the heat from the side of the infrared heating tube away from the heating roller back to the heating roller. On the one hand, this heat is reflected back to the heating roller to prevent the heat from accumulating and affecting the heating uniformity of the heating roller. In other words, the heating uniformity is further improved in conjunction with the rotating heating roller. On the other hand, it can improve the heat utilization rate and play an energy-saving role.

[0037] Technical effect 3: The linear module drives the inner cylinder to reciprocate within the inner flexible support. During the movement, since the outer diameter of the convex ring is slightly larger than the inner diameter of the inner flexible support, the inner wall of the inner flexible support can undulate, causing the heat reflective film to undulate in a wave-like manner. This continuously changes the direction of heat radiation reflection, thereby further improving the uniformity of heat transfer to the heating roller, i.e., improving the heating uniformity of the heating roller.

[0038] In summary, in this case, the heating roller is heated evenly by means of uniformly distributed infrared heating tubes, a heat-reflective film with undulating waves, and a rotating heating roller while the infrared heating tubes remain stationary, thereby improving the transfer quality.

[0039] Technical Effect 4: This solution uses a counterweight as the driving source, causing the heating roller located above to have a downward tendency, thereby achieving pressure on the aluminum material-transfer film. During the hot pressing transfer process, the pressure remains constant and does not change, thus ensuring that the quality of the transfer result is not affected by the pressure factor. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of the present invention;

[0041] Figure 2 This is a structural schematic diagram of the hot-pressing component and the pressure supply assembly;

[0042] Figure 3 This is a schematic diagram of the hot-pressed component;

[0043] Figure 4 This is a schematic diagram of the hot-pressing assembly.

[0044] Figure 5 Cross-section of the hot-pressed assembly Figure 1 ;

[0045] Figure 6Cross-section of the hot-pressed assembly Figure 2 ;

[0046] Figure 7 This is a schematic diagram of the inner cylinder, the linear module 1, and the convex ring;

[0047] Figure 8 This is a schematic diagram of the pressure supply assembly.

[0048] Figure 9 These are cross-sectional views of drive component one and drive component two.

[0049] The labels in the attached diagram are:

[0050] 100. Frame; 200. Hot pressing component; 201. Motor; 202. Transmission shaft; 203. Hot pressing assembly; 204. Side connecting seat; 205. Inner flexible support; 206. Side support; 207. Arc-shaped groove; 208. Infrared heating tube; 209. Heating roller; 210. Inner cylinder; 211. Linear module one; 212. Convex ring; 213. Power transmission component; 300. Pressure supply assembly; 301. Rack and pinion. 302. Gear; 303. Connecting shaft; 304. Connecting rod; 305. Drive component two; 3051. Horizontal cylinder shell; 3052. Horizontal piston; 3053. Horizontal piston rod; 306. Connecting pipe; 307. Drive component one; 3071. Vertical cylinder shell; 3072. Vertical piston; 3073. Vertical piston rod; 308. Counterweight; 309. Protrusion; 310. Lifting rod; 311. Linear module two; 312. Water tank. Detailed Implementation

[0051] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0052] Reference Figure 1 and Figure 2 A three-dimensional transfer printing device for aluminum surface treatment includes a frame 100, on which a hot pressing component 200 and a pressure supply component 300 are disposed.

[0053] I. Hot-pressed components 200

[0054] Reference Figure 3 The hot pressing component 200 includes two hot pressing assemblies 203 arranged symmetrically in the upper and lower positions and a vertically arranged transmission shaft 202. The input end of the transmission shaft 202 is equipped with a motor 201.

[0055] Reference Figures 4-7The hot pressing assembly 203 includes a side connecting seat 204, wherein the side connecting seat 204 of the upper hot pressing assembly 203 forms a sliding guide engagement with the frame 100 in the vertical direction, and the side connecting seat 204 of the lower hot pressing assembly 203 is fixedly connected to the frame 100.

[0056] The hot pressing assembly 203 also includes an inner flexible support 205 and a heating roller 209.

[0057] The inner flexible support 205 is in the shape of a ring, and the heating roller 209 is in the shape of a hollow cylinder. The former is coaxially located inside the latter, and the axis of the heating roller 209 is arranged horizontally.

[0058] The end of the inner flexible support 205 is provided with a side support 206, which is fixedly connected to the side connecting seat 204.

[0059] The end of the heating roller 209 is movably connected to the side support 206 via a bearing. The end of the heating roller 209 is powered to the transmission shaft 202 via a power transmission member 213. Furthermore, since the upper hot pressing assembly 203 needs to move vertically, the driving member of the power transmission member 213 of the upper hot pressing assembly 203 is powered to the transmission shaft 202 via a connector. When the driving member moves together with the upper hot pressing assembly 203, the driving member and the transmission shaft 202 are powered to the same extent via the connector. Preferably, the connector includes an external spline on the transmission shaft 202 and an internal spline on the driving member.

[0060] The heating roller 209 is made of a heat-conducting material, such as copper, and the inner flexible support 205 is made of a soft material with elastic properties, such as high-temperature resistant rubber or silicone.

[0061] The outer circular surface of the inner flexible support 205 is provided with an arc-shaped groove 207. Several arc-shaped grooves 207 are arranged in an array along the circumference of the inner flexible support 205. A heat-reflective film is provided on the groove wall of each arc-shaped groove 207. An infrared heating tube 208 is provided in each arc-shaped groove 207. The extension direction of the infrared heating tube 208 is parallel to the axis of the heating roller 209. The end of the infrared heating tube 208 is connected to the side support 206. The infrared heating tube 208 is a technology that can be implemented in the prior art. It adopts infrared thermal radiation heating technology, which will not be described in detail.

[0062] An inner cylinder 210 is fitted inside the inner flexible support 205. The inner cylinder 210 is driven by a linear module 211 and moves within the inner flexible support 205. The linear module 211 is installed on the side support 206 and can use existing screw linear movement technology, which will not be described in detail.

[0063] The outer surface of the inner cylinder 210 is provided with a protruding ring 212. The outer diameter of the protruding ring 212 is slightly larger than the inner diameter of the inner flexible support 205, for example, the difference is 0.3-0.5cm.

[0064] Furthermore, multiple convex rings 212 are arranged in an array along the axis of the inner cylinder 210.

[0065] Furthermore, refer to Figure 7 There are two inner cylinders 210 and two corresponding linear modules 211. The two inner cylinders 210 reciprocate within the two halves of the inner flexible support 205.

[0066] The working process of the hot-pressed component 200 is specifically manifested as follows:

[0067] The aluminum plate / sheet that has been coated with primer is bonded to the three-dimensional transfer film, and the bonded body passes through the area between the heating rollers 209 of the two hot pressing components 203. This step can be achieved using existing technology and is not the core of this case, so it will not be described in detail.

[0068] At the same time, the heating roller 209 is heated by the infrared heating tube 208 and the heating roller 209 is driven to rotate by the motor 201, so that the bonding body is heated while the bonding body is pulled to move, thereby realizing the heat transfer of the bonding body.

[0069] Its technological advantages lie in:

[0070] Technical effect 1: The heating roller 209 is radiated and heated by the infrared heating tubes 208 distributed in a uniform array. Combined with the rotating heating roller 209, the heating roller 209 can be heated more evenly.

[0071] Technical effect 2: The heat from the side of the infrared heating tube 208 away from the heating roller 209 is reflected to the heating roller 209 by the heat reflective film. On the one hand, this part of the heat is reflected to the heating roller 209, preventing the heat from accumulating and affecting the heating uniformity of the heating roller 209. That is, the heating uniformity of the heating roller 209 is further improved in conjunction with the rotating action of the heating roller 209. On the other hand, it can improve the heat utilization rate and play an energy-saving role.

[0072] Technical effect 3: The linear module 211 drives the inner cylinder 210 to reciprocate within the inner flexible support 205. During the movement, since the outer diameter of the convex ring 212 is slightly larger than the inner diameter of the inner flexible support 205, the inner wall of the inner flexible support 205 can undulate through the convex ring 212, thereby causing the heat reflective film to undulate in a wave-like manner, thus continuously changing the reflection direction of heat radiation, thereby further improving the uniformity of heat transfer to the heating roller 209, that is, improving the heating uniformity of the heating roller 209.

[0073] In summary, in this case, the heating roller 209 is heated evenly by means of uniformly distributed infrared heating tubes 208, a heat-reflective film with undulating waves, and a rotating heating roller 209 while the infrared heating tubes 208 remain stationary, thereby improving the transfer quality.

[0074] II. Pressure Supply Component 300

[0075] Reference Figure 3 , Figure 8 and Figure 9 The pressure supply assembly 300 includes a vertically arranged rack 301 and a gear 302 meshing with the rack 301. The rack 301 is disposed on the side connecting seat 204 of the upper hot pressing assembly 203. A connecting shaft 303 parallel to the heating roller 209 is disposed on the frame 100, and the gear 302 is mounted on the connecting shaft 303.

[0076] The pressure supply assembly 300 also includes a counterweight 308, a first drive component 307, and a second drive component 305.

[0077] The counterweight 308 is slidably mounted on the frame 100 in the vertical direction. The side of the counterweight 308 is provided with a protrusion 309. The frame 100 is provided with a lifting rod 310 and a linear module 311 for driving the lifting rod 310 to move in the vertical direction. The end of the lifting rod 310 is provided with a hook to hook the protrusion 309.

[0078] Furthermore, a water tank 312 is provided on the upper surface of the counterweight 308, and the weight of the counterweight 308 can be changed by injecting or pumping water into the water tank 312.

[0079] The drive component 307 includes a vertical cylindrical shell 3071, a vertical piston 3072 is sleeved inside the vertical cylindrical shell 3071, a vertical piston rod 3073 is provided at the upper end of the vertical piston 3072, and the upper end of the vertical piston rod 3073 is connected to the bottom of the counterweight block 308.

[0080] The second driving component 305 includes a horizontal cylindrical shell 3051 that extends horizontally and is perpendicular to the heating roller 209. A horizontal piston 3052 is sleeved inside the horizontal cylindrical shell 3051. A horizontal piston rod 3053 is provided at one end of the horizontal piston 3052. The end of the horizontal piston rod 3053 extends out of the horizontal cylindrical shell 3051 and is connected to the connecting shaft 303 through a connecting rod 304.

[0081] The vertical cylinder shell 3071 and the horizontal cylinder shell 3051 are connected by a connecting pipe 306. When the weight of the counterweight 308 is applied to the vertical piston rod 3073, the hydraulic medium in the vertical cylinder shell 3071 can be pushed into the horizontal cylinder shell 3051, causing the horizontal piston rod 3053 to move. When the horizontal piston rod 3053 moves, it drives the connecting shaft 303 to rotate through the connecting rod 304. The connecting shaft 303 rotates together with the gear 302. The gear 302 will drive the rack 301 to have a downward tendency, so that the hot pressing component 203 located above has a downward tendency, thereby achieving pressure on the aluminum plate-transfer film bonding body. Since the counterweight 308 is used as the pressure driving source, the pressure remains constant, thereby improving the quality of the final transfer result.

[0082] When the transfer is finished and the next bonding body needs to be placed in the area between the two hot pressing components 203, the counterweight 308 can be moved upward by the linear module 2 311. Then the hydraulic medium in the horizontal cylinder shell 3051 returns to the vertical cylinder shell 3071, the connecting shaft 303 rotates in the opposite direction with the gear 302, and the rack 301 moves the upper hot pressing component 203 upward. After the placement is completed, the linear module 2 311 drives the counterweight 308 downward until the hook disengages from the contact with the protrusion 309. At this time, under the gravity drive of the counterweight 308, the upper hot pressing component 203 has a downward tendency, realizing the pressure against the aluminum plate-transfer film bonding body.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A three-dimensional transfer printing device for aluminum surface treatment, comprising a frame (100), wherein a hot pressing component (200) and a pressure supply component (300) are disposed on the frame (100), characterized in that, The hot pressing component (200) includes two hot pressing assemblies (203) arranged symmetrically in the upper and lower parts. The hot pressing assembly (203) includes a side connecting seat (204), an inner flexible support (205), and a heating roller (209). The side connecting seat (204) of the upper hot pressing assembly (203) and the frame (100) form a sliding guide fit in the vertical direction, and the side connecting seat (204) of the lower hot pressing assembly (203) is fixedly connected to the frame (100); The heating roller (209) is a cylindrical shape with a hollow interior and arranged horizontally. The inner flexible support (205) is a ring shape and is coaxially located inside the heating roller (209). The heating roller (209) is made of a heat-conducting material, and the inner flexible support (205) is made of a soft material with elastic properties. The end of the inner flexible support (205) is provided with a side support (206), the side support (206) is fixedly connected to the side connecting seat (204), and the end of the heating roller (209) is movably connected to the side support (206) through a bearing; The outer circular surface of the inner flexible support (205) is provided with an arc-shaped groove (207). Several arc-shaped grooves (207) are arranged in an array along the circumferential direction of the inner flexible support (205). A heat-reflective film is provided on the groove wall of each arc-shaped groove (207). An infrared heating tube (208) is provided in each arc-shaped groove (207). The extension direction of the infrared heating tube (208) is parallel to the axis of the heating roller (209). The end of the infrared heating tube (208) is connected to the side support (206).

2. The three-dimensional transfer printing equipment for aluminum surface treatment according to claim 1, characterized in that, A vertically arranged transmission shaft (202) is provided on the frame (100), and a motor (201) is provided at the input end of the transmission shaft (202). The end of the heating roller (209) is connected to the transmission shaft (202) by a power transmission component (213).

3. The three-dimensional transfer printing equipment for aluminum surface treatment according to claim 2, characterized in that, The active member of the power transmission member (213) of the upper hot pressing assembly (203) is connected to the transmission shaft (202) via a connector, and when the active member moves together with the upper hot pressing assembly (203), the active member and the transmission shaft (202) are connected via a connector.

4. A three-dimensional transfer printing device for aluminum surface treatment according to claim 2, characterized in that, An inner cylinder (210) is fitted inside the inner flexible support (205). The inner cylinder (210) is driven by a linear module (211) mounted on the side support (206) and moves within the inner flexible support (205). The outer surface of the inner cylinder (210) is provided with a convex ring (212), and the outer diameter of the convex ring (212) is larger than the inner diameter of the inner flexible support (205).

5. A three-dimensional transfer printing device for aluminum surface treatment according to claim 4, characterized in that, Multiple convex rings (212) are arranged in an array along the axis of the inner cylinder (210).

6. A three-dimensional transfer printing device for aluminum surface treatment according to claim 4, characterized in that, The pressure supply assembly (300) includes a vertically arranged rack (301) and a gear (302) meshing with the rack (301). The rack (301) is mounted on a side connecting seat (204) of the upper hot pressing assembly (203). A connecting shaft (303) parallel to the heating roller (209) is provided on the frame (100), and the gear (302) is mounted on the connecting shaft (303). The pressure supply assembly (300) also includes a counterweight (308), a first drive component (307), and a second drive component (305); The counterweight (308) is slidably mounted on the frame (100) in the vertical direction; The driving component (307) includes a vertical cylindrical shell (3071), a vertical piston (3072) is sleeved inside the vertical cylindrical shell (3071), a vertical piston rod (3073) is provided at the upper end of the vertical piston (3072), and the upper end of the vertical piston rod (3073) is connected to the bottom of the counterweight (308). The second driving component (305) includes a horizontal cylindrical shell (3051) with its extension direction arranged horizontally and perpendicular to the heating roller (209). A horizontal piston (3052) is sleeved inside the horizontal cylindrical shell (3051). A horizontal piston rod (3053) is provided at one end of the horizontal piston (3052). The end of the horizontal piston rod (3053) extends out of the horizontal cylindrical shell (3051) and is connected to the connecting shaft (303) through a connecting rod (304). The vertical cylinder shell (3071) and the horizontal cylinder shell (3051) are connected by a connecting pipe (306). When the weight of the counterweight (308) is applied to the vertical piston rod (3073), the hydraulic medium in the vertical cylinder shell (3071) can be pushed into the horizontal cylinder shell (3051), causing the horizontal piston rod (3053) to move. When the horizontal piston rod (3053) moves, it drives the connecting shaft (303) to rotate through the connecting rod (304). The connecting shaft (303) rotates together with the gear (302), and the gear (302) drives the rack (301) to move down.

7. A three-dimensional transfer printing device for aluminum surface treatment according to claim 6, characterized in that, The counterweight (308) has a protrusion (309) on its side. The frame (100) is provided with a lifting rod (310) and a linear module (311) for driving the lifting rod (310) to move in the vertical direction. The end of the lifting rod (310) is provided with a hook to hook the protrusion (309).

8. A three-dimensional transfer printing device for aluminum surface treatment according to claim 6, characterized in that, A water tank (312) is provided on the upper surface of the counterweight (308).

9. The operating method of a three-dimensional transfer printing device for aluminum surface treatment as described in claim 6, characterized in that, Includes the following steps: Step 1: The aluminum plate with the primer has been coated and the three-dimensional transfer film are bonded together to form a bonded body, which is then passed through the area between the heating rollers (209) of the two hot pressing components (203); Step 2: Heat the heating roller (209) by means of infrared heating tube (208); At the same time, the heat from the side of the infrared heating tube (208) away from the heating roller (209) is reflected to the heating roller (209) by the heat reflection film. At the same time, the inner cylinder (210) is driven to reciprocate within the inner flexible support (205) by the linear module (211). During the movement, since the outer diameter of the convex ring (212) is larger than the inner diameter of the inner flexible support (205), the inner wall of the inner flexible support (205) can be made to undulate through the convex ring (212), so that the heat reflective film undulates in a wave-like manner and continuously changes the direction of heat radiation reflection. At the same time, the heating roller (209) is driven to rotate by the motor (201), thereby heating the bonding body while pulling the bonding body to move, so as to realize the heat transfer of the bonding body.

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