Transfer printing device and product printing equipment

Abstract

The utility model relates to the technical field of printing equipment, and discloses a transfer printing device and product printing equipment. The transfer printing device comprises a workbench, a first positioning module, a second positioning module, a die assembly driving module and a transfer printing film assembly. The second positioning module and the first positioning module are arranged in an aligned mode, the second positioning module comprises an upper die base body and a pre-pressing positioning mechanism arranged in the upper die base body, and the pre-pressing positioning mechanism faces the first positioning module. The die assembly driving module is arranged on the workbench and connected with the upper die base body, during transfer printing, the transfer printing film assembly is arranged between the first positioning module and the second positioning module, the first positioning module and the second positioning module are combined to clamp the transfer printing film assembly, and a closed air cavity communicated with external air pressure equipment is formed in at least one side of the transfer printing film assembly. The transfer printing device is suitable for printing of complex printing faces and large-area patterns, and the printing quality and precision are guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of printing equipment, and in particular, to a transfer device and product printing equipment. Background Art

[0002] At present, with the development of the economy, the appearance requirements of 3C electronic products are getting higher and higher. Therefore, for the printing of patterns on some curved products, corresponding transfer technologies have been developed, that is, the pattern is first printed on a framed film, and then the pattern on the film is transferred to a designated product. However, in the actual transfer process, it is difficult to achieve uniform force on the entire surface of the film, resulting in irregular deformation of the pattern itself when it is transferred to the product, and the final product quality is poor; if air pressure is used as the driving force for the deformation of the film, since the outer surface of the product is a curved surface or other special-shaped surface, it is difficult to ensure that the pattern can accurately move to the designated position on the product surface when the film itself is deformed by air pressure, and the printing accuracy is poor. Utility Model Content

[0003] The purpose of the present application is to provide a transfer device and product printing equipment to solve the problems of low printing accuracy and poor quality of molded products in the existing transfer method.

[0004] To achieve the above objectives, in a first aspect, the present application provides a transfer device, comprising:

[0005] Workbench;

[0006] A first positioning module is arranged on the workbench;

[0007] A second positioning module is arranged in alignment with the first positioning module, the second positioning module comprises an upper die base and a pre-pressing positioning mechanism disposed in the upper die base, the pre-pressing positioning mechanism faces the first positioning module;

[0008] A mold clamping drive module, which is arranged on the workbench and connected to the upper mold base;

[0009] Transfer membrane assembly;

[0010] During transfer, the transfer film assembly is placed between the first positioning module and the second positioning module, which are combined to clamp the transfer film assembly and form a closed air cavity on at least one side of the transfer film assembly that is connected to an external air pressure device.

[0011] As a further improvement of the above technical solution:

[0012] In a possible implementation manner, the pre-compression positioning mechanism includes:

[0013] A pre-pressing drive assembly is disposed on the upper die base; and

[0014] The profiling press is arranged on the pre-pressing driving assembly, and the side of the profiling press facing the first positioning module is a profiling surface.

[0015] In a possible implementation, the transfer device further includes a positioning jig, the first positioning mold assembly includes a lower mold base, the lower mold base is disposed on the workbench, a side of the lower mold base facing away from the workbench is recessed to form a first cavity, the positioning jig is accommodated in the first cavity, and an upper surface of the positioning jig is lower than an upper surface of the lower mold base;

[0016] During transfer, the lower mold base abuts against the transfer film assembly, the transfer film assembly seals the first cavity and forms a first closed air cavity with the positioning fixture that is connected to the external air pressure device, and the air pressure device provides negative pressure for the first closed air cavity.

[0017] In a possible implementation manner, the first positioning module further includes:

[0018] A film-lifting mechanism is disposed on the lower die base and located in the first die cavity;

[0019] Wherein, along the lifting direction of the membrane-release lifting mechanism, the positioning fixture is provided with a through hole for the lifting end of the membrane-release lifting mechanism to pass through.

[0020] In a possible implementation manner, the first positioning module further includes:

[0021] The material picking and lifting mechanism is arranged on the lower die base and located in the first cavity, and the lifting rod of the material picking and lifting mechanism passes through the positioning fixture arrangement.

[0022] In a possible implementation manner, the positioning fixture is provided with a positioning portion for positioning the product, the positioning portion is provided with a vacuum adsorption hole, and the positioning fixture is also provided with a group of exhaust holes;

[0023] Wherein, the first positioning module is provided with a vacuum connector for externally connected vacuum supply equipment, and the vacuum connector is connected to the vacuum adsorption hole.

[0024] In a possible implementation manner, the upper die base body is recessed on one side facing the first positioning die set to form a second cavity, and the pre-pressing positioning mechanism is accommodated in the second cavity;

[0025] During transfer, the upper mold base abuts against the transfer film assembly, and the transfer film assembly seals the second cavity to form a second closed air cavity connected to the external air pressure device, and the air pressure device provides positive pressure for the second closed air cavity.

[0026] In a possible implementation, the mold clamping drive module includes:

[0027] A lifting guide mechanism is arranged on the workbench, and the upper die base is arranged on the lifting guide mechanism; and

[0028] The lifting drive mechanism is arranged on the workbench and connected with the upper die base body.

[0029] In a possible implementation manner, the second positioning module further includes a slipknot seat disposed on the upper die base, and the slipknot seat is movably connected to the lifting drive mechanism.

[0030] To achieve the above-mentioned purpose, in a second aspect, the present application also provides a product printing device, including a transfer device provided according to the above-mentioned first aspect.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The present application provides a transfer device and a product printing device, wherein, when the transfer device is transferring, the product is first positioned and installed on the first positioning module, and then the transfer film assembly printed with the pattern layer is placed between the first positioning module and the second positioning module, and then the mold closing drive module drives the second positioning module to move toward the first positioning module for mold closing to clamp the transfer film assembly, and the first positioning module and the second positioning module are combined to clamp the transfer film assembly, and at this time, a closed air cavity connected to an external air pressure device is formed on at least one side of the transfer film assembly. In this way, the transfer film assembly is first pushed by the pre-pressing positioning mechanism in the upper mold base to shorten the gap between the transfer film assembly and the printing surface of the product and to pre-position the transfer film and the product, so as to prevent the film itself from being deformed by air pressure and unable to ensure that the pattern can accurately move to the designated position on the surface of the product, so as to improve the printing accuracy and quality; at the same time, it should be ensured that the transfer film assembly does not contact the printing surface of the product to prevent the product from rubbing off the ink on the transfer film. When a closed air cavity is formed on the side of the transfer film assembly close to the second positioning module, compressed air is injected into the closed air cavity by a pneumatic device to form a positive pressure, so that the transfer film assembly expands toward the first positioning module and fits the product for transfer. When a closed air cavity is formed on the side of the transfer film assembly close to the first positioning module, a pneumatic device is used to evacuate the closed air cavity to form a negative pressure, so that the transfer film assembly expands toward the first positioning module and fits the product for transfer. When closed air cavities are formed on both sides of the transfer film assembly, positive pressure can be provided to the closed air cavity on the second positioning module side, and negative pressure can be provided to the closed air cavity on the first positioning module side, so that the transfer film assembly expands toward the first positioning module and fits the product for transfer. The above transfer method can effectively solve the technical problems of low printing accuracy and poor quality of molded products in the existing transfer method when printing curved products.

[0033] In addition, the setting of the pre-pressing positioning mechanism can shorten the travel of the transfer film assembly to fit the printed surface of the product, and can quickly discharge the air between the transfer film assembly and the printed surface, thereby avoiding bubbles or wrinkles after the transfer film assembly and the product are fitted together, and further improving the printing quality and accuracy.

[0034] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present application. It should be understood that the following drawings only show certain embodiments of the present application and should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work. In the drawings:

[0036] Figure 1A schematic diagram of the three-dimensional structure of a transfer device provided in an embodiment of the present application, in which a workbench and a workbench are hidden, is shown;

[0037] Figure 2 A structural schematic diagram showing the assembly state of the second positioning module and the mold clamping drive module in the transfer device provided in an embodiment of the present application is shown;

[0038] Figure 3 An exploded schematic diagram of a second positioning module provided in an embodiment of the present application is shown;

[0039] Figure 4 A structural schematic diagram showing a working state of the first positioning module and the positioning fixture in the transfer device provided in an embodiment of the present application when they are assembled;

[0040] Figure 5 Shows Figure 4 An exploded schematic diagram of the first positioning module and the positioning fixture is shown;

[0041] Figure 6 Shows Figure 4 A structural schematic diagram of another working state when the first positioning module and the positioning fixture are assembled.

[0042] Description of reference numerals:

[0043] 10. Products;

[0044] 200, transfer device;

[0045] 210, first positioning module; 211, lower die base; 212, first cavity; 213, first air nozzle; 214, film-release lifting mechanism; 2140, film-release lifting assembly; 2141, film-release lifting block; 215, material-removing lifting mechanism; 2150, material-removing lifting assembly; 2151, lifting rod; 216, vacuum joint;

[0046] 220, positioning fixture; 221, vacuum adsorption hole; 222, positioning portion; 223, exhaust hole group; 224, through hole; 225, lifting hole;

[0047] 230, mold clamping drive module; 231, lifting guide mechanism; 2310, slide rail; 2311, slide block; 232, lifting drive mechanism;

[0048] 240, second positioning module; 241, upper die seat; 242, pre-pressing positioning mechanism; 2420, pre-pressing driving assembly; 2421, contour pressing tool; 243, second cavity; 244, slipknot seat; 245, second air nozzle;

[0049] 250. Transfer film assembly; 251. Skeleton frame; 252. Elastic film. DETAILED DESCRIPTION

[0050] The specific implementation of the embodiment of the present application is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present application, and is not used to limit the embodiment of the present application.

[0051] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0052] In the embodiments of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0056] Example

[0057] See also Figure 1 , Figure 2 and Figure 3This embodiment provides a transfer device 200, and in particular, provides a printing device suitable for curved surface printing, which can be used for printing on the printing surface of a product 10, wherein it is particularly suitable for products 10 with curved printing surfaces, and of course, it is also suitable for products 10 with flat printing surfaces.

[0058] In this embodiment, the transfer device 200 includes a workbench (not shown), a first positioning module 210, a mold clamping drive module 230, a second positioning module 240 and a transfer film assembly 250. The workbench is provided with a bracket (not shown), the bracket is vertically arranged, and a working space for printing operation is formed between the bracket and the workbench.

[0059] The first positioning module 210 is disposed on the workbench and can be used to install the product 10 to be printed.

[0060] The second positioning module 240 is arranged in alignment with the first positioning module 210. Specifically, the second positioning module 240 includes an upper die base 241 and a pre-pressing positioning mechanism 242. The pre-pressing positioning mechanism (242) is arranged in the upper die base 241 and is arranged toward the first positioning module 210.

[0061] The mold clamping driving module 230 is arranged on the bracket and is located above the first positioning module 210. The mold clamping driving module 230 is connected to the upper mold base 241 of the second positioning module 240. Thus, along the vertical direction, the first positioning module 210, the second positioning module 240 and the mold clamping driving module 230 are arranged in sequence from bottom to top.

[0062] The mold closing drive module 230 can output reciprocating linear motion in the vertical direction, so that the mold closing drive module 230 can drive the second positioning module 240 to move closer to or away from the first positioning module 210, thereby allowing the first positioning module 210 and the second positioning module 240 to close or open the mold.

[0063] Thus, during transfer, the transfer film assembly 250 is placed between the first positioning module 210 and the second positioning module 240. The first positioning module 210 and the second positioning module 240 clamp the transfer film assembly 250 and form a closed air cavity connected to an external air pressure device on at least one side of the transfer film assembly 250.

[0064] In this way, the transfer film assembly 250 is first pushed by the pre-pressure positioning mechanism 242 in the upper mold base 241 to shorten the gap between the transfer film assembly 250 and the printing surface of the product 10, and the transfer film assembly 250 and the product are pre-positioned to prevent the transfer film itself from being deformed by air pressure and it is difficult to ensure that the pattern can accurately move to the specified position on the product surface, so as to improve the printing accuracy and quality; at the same time, it should be ensured that the transfer film does not contact the surface to be printed on the product to prevent the product from rubbing off the ink on the transfer film; when a closed air cavity is formed on the side of the transfer film assembly 250 close to the second positioning module 240, compressed air is injected into the closed air cavity by the air pressure equipment to form a positive pressure, so that the transfer film assembly 250 expands toward the first positioning module 210 and fits the product for transfer. When a closed air cavity is formed on the side of the transfer film assembly 250 close to the first positioning module 210, the closed air cavity is evacuated by the air pressure device to form a negative pressure, so that the transfer film assembly 250 expands toward the first positioning module 210 and fits the product for transfer. When closed air cavities are formed on both sides of the transfer film assembly 250, positive pressure can be provided to the closed air cavity on the side of the second positioning module 240, and negative pressure can be provided to the closed air cavity on the side of the first positioning module 210, so that the transfer film assembly 250 expands toward the first positioning module 210 and fits the product for transfer. Thus, the above three methods can transfer the pattern layer on the transfer film assembly 250 to the printing surface of the product 10. Since the transfer film assembly 250 has high elasticity, high fit with the printing surface of the product 10, and uniform force, it can be applied to the printing of complex printing surfaces, such as the printing surface of the curved structure, and is also applicable to the printing of large-area patterns, which can effectively ensure the printing quality and accuracy.

[0065] In addition, the setting of the pre-pressing positioning mechanism 242 can shorten the travel of the transfer film assembly 250 to fit the printed surface of the product 10, and can quickly discharge the air between the transfer film assembly 250 and the printed surface, thereby avoiding the generation of bubbles or wrinkles after the transfer film assembly 250 and the printed surface of the product 10 are fitted together, further improving the printing quality and accuracy.

[0066] Furthermore, in this embodiment, the transfer device 200 further includes a positioning fixture 220, which is disposed on the first positioning module 210 and is used to position the product 10 to be printed. The product 10 has a printing surface to be printed.

[0067] Specifically, the first positioning module 210 includes a lower mold base 211 , which is disposed on a workbench. A side of the lower mold base 211 facing away from the workbench is recessed to form a first cavity 212 , and the positioning fixture 220 is accommodated in the first cavity 212 .

[0068] During the transfer, the lower mold base 211 abuts against the transfer film assembly 250, and the transfer film assembly 250 closes the first cavity 212 and forms a closed air cavity connected to the external air pressure device with the positioning fixture 220. This embodiment is defined as the first closed air cavity for distinguishing description. Therefore, the air pressure device can provide negative pressure for the first closed air cavity.

[0069] Furthermore, the lower mold base 211 is provided with a first air nozzle 213, and the positioning fixture 220 is provided with an exhaust hole group 223 connected to the first air nozzle 213. The first air nozzle 213 is externally connected to an air pressure device, and the air pressure device draws a vacuum through the first air nozzle 213 to provide negative pressure for the first closed air cavity.

[0070] In this embodiment, the positioning jig 220 is accommodated in the first cavity 212, and the surface of the positioning jig 220 facing the upper mold base 241 is lower than the surface of the lower mold base 211 facing the upper mold base 241, so that when the transfer film assembly 250 is clamped, a first closed air cavity is formed with the positioning jig 220 to facilitate gas discharge and avoid direct contact between the transfer film assembly 250 and the product 10.

[0071] One side of the upper mold base 241 facing the first positioning mold assembly 210 is recessed to form a second cavity 243 , and the pre-compression positioning mechanism 242 is received in the second cavity 243 .

[0072] During the transfer, the upper mold base 241 abuts against the transfer film assembly 250, and the transfer film assembly 250 closes the second mold cavity 243 to form a closed air cavity connected to the external air pressure device. This embodiment is defined as the second closed air cavity for distinguishing description. Therefore, the air pressure device provides positive pressure for the second closed air cavity.

[0073] Furthermore, a second air nozzle 245 connected to the second cavity 243 is provided on the upper mold base 241. The second air nozzle 245 is externally connected to an air pressure device, and the air pressure device can fill the second air nozzle 245 with compressed air to provide positive pressure for the second closed air cavity.

[0074] It should be noted that in this embodiment, when transferring, the transfer film assembly 250 is located between the first positioning module 210 and the second positioning module 240, and when the first positioning module 210 and the second positioning module 240 are molded together, the upper mold base 241 and the lower mold base 211 can clamp the transfer film assembly 250, and the transfer film assembly 250 separates and seals the first cavity 212 and the second cavity 243. In other words, after the mold is closed, the first cavity 212 and the second cavity 243 are separated into two independent closed air cavities by the transfer film assembly 250, namely the first closed air cavity and the second closed air cavity, wherein the side of the transfer film assembly 250 printed with the pattern layer faces the positioning jig 220, but does not contact the printed surface of the product 10.

[0075] It can be understood that in this embodiment, since the first cavity 212 is provided with a positioning fixture 220 for positioning the product 10, during transfer, the side of the transfer film assembly 250 on which the pattern layer is printed faces the product 10, so that the first air nozzle 213 is evacuated by an external air pressure device, and the air between the positioning fixture 220 and the transfer film assembly 250 is extracted through the exhaust hole group 223, so that a negative pressure is formed in the first closed air cavity between the positioning fixture 220 and the transfer film assembly 250. Furthermore, the transfer film assembly 250 has high elasticity, and under the action of negative pressure, it is concave and expanded toward the positioning fixture 220 and fits with the product 10. The second cavity 243 is located above the product 10. Compressed air is injected into the closed second cavity 243 through an external air pressure device to pressurize it, so that a positive pressure is formed in the second closed cavity. The transfer film assembly 250 is recessed and expanded toward the positioning fixture 220, squeezing the first cavity 212 and allowing the gas in the first cavity 212 to be discharged through the exhaust hole group 223 while being bonded to the product 10. It should also be noted that the above-mentioned external air pressure device can perform vacuuming operations on the first closed cavity and pressurizing operations on the second closed cavity by injecting compressed air. It can also be performed one after the other.

[0076] Optionally, the contact surfaces of the upper mold base 241 and the lower mold base 211 with the transfer film assembly 250 are provided with sealing gaskets (not shown), which can effectively ensure the sealing of the first cavity 212 and the second cavity 243 after contact with the transfer film assembly 250.

[0077] In some embodiments, of course, only the first air nozzle 213 of the external air pressure device can be provided on the lower mold base 211. In this solution, the external air pressure device only needs to evacuate the space between the positioning fixture 220 and the transfer film assembly 250 in the first cavity 212 to form a negative pressure.

[0078] In other embodiments, or only a second air nozzle 245 of an external air pressure device is provided on the second positioning module 240, in this solution, only the external air pressure device needs to inject compressed air into the second cavity 243 to form a positive pressure in the second closed air cavity, and the air between the positioning fixture 220 and the transfer film assembly 250 in the first cavity 212 can be discharged through the exhaust hole group 223.

[0079] It should be noted that the transfer pressure F of the product 10 = (P1-P2) × S, where P1 is the air pressure of the first cavity 212, P2 is the air pressure of the second cavity 243, and S is the area of ​​the printing surface of the product 10. The transfer pressure F can be adjusted by the size of the air pressure difference between the two cavities. When the second cavity 243 is injected with compressed air and the first cavity 212 is evacuated, one of the corresponding P1 or P2 is zero.

[0080] For more information, please refer to Figure 1 , Figure 2 and Figure 3 The pre-pressing positioning mechanism 242 includes a pre-pressing driving assembly 2420 and a profiling press 2421. The pre-pressing driving assembly 2420 is disposed on the upper mold base 241. The profiling press 2421 is disposed on the pre-pressing driving assembly 2420, and the side of the profiling press 2421 facing the positioning jig 220 is a profiling surface. The pre-pressing driving assembly 2420 can drive the profiling press 2421 to rise and fall in the vertical direction, so that the profiling press 2421 presses against the transfer film assembly 250, so that the transfer film assembly 250 is close to or close to the printing surface of the product 10, but does not contact the printing surface. Thereby, the gap between the transfer film assembly 250 and the printing surface is reduced as much as possible, so that the air between the printing film assembly 250 and the printing surface can be quickly discharged; optionally, the transfer film and the curved surface product are arranged relative to each other, and the transfer film is overall horizontal, so the distance between the transfer film itself and various positions on the curved surface product is not equal. When subjected to air pressure thrust or suction, the movement deformation of the transfer film at various locations is not equal, so it is difficult to ensure the final molding accuracy of the pattern on the product. Pre-pressing the transfer film by the contoured press 2421 can solve the above problem and improve the printing accuracy and the quality of the molded product.

[0081] Optionally, the pre-pressing drive assembly 2420 includes but is not limited to an oil cylinder, a pneumatic cylinder, an electric push rod, an electric cylinder or a screw motor.

[0082] The above-mentioned mold clamping drive module 230 includes a lifting guide mechanism 231 and a lifting drive mechanism 232. The lifting guide mechanism 231 is arranged on the bracket, and the upper mold base 241 is arranged on the lifting guide mechanism 231. The lifting drive mechanism 232 is arranged on the bracket and is movably connected to the upper mold base 241. The lifting guide mechanism 231 can provide guidance for the lifting and lowering of the upper mold base 241, ensure the accuracy of mold clamping, and improve the transfer printing accuracy.

[0083] In some embodiments, the lifting guide mechanism 231 can be configured as a guide column arranged along the vertical direction. A guide sleeve is provided on the upper mold base 241, and the guide sleeve is sleeved on the guide column. The upper mold base 241 is guided by relative sliding between the guide sleeve and the guide column.

[0084] See also Figure 2 In this embodiment, the lifting guide mechanism 231 includes a slide rail 2310 and a slider 2311. The slide rail 2310 is arranged on the bracket along the vertical direction, and the slider 2311 is arranged on the upper mold base 241. The guidance of the upper mold base 241 is achieved through the sliding cooperation between the slider 2311 and the slide rail 2310.

[0085] Optionally, the lifting drive mechanism 232 includes but is not limited to an oil cylinder, a pneumatic cylinder, an electric push rod, an electric cylinder or a screw motor.

[0086] See also Figure 2 and Figure 3 Furthermore, the second positioning module 240 also includes a slipknot seat 244 arranged on the upper mold base body 241, and the slipknot seat 244 is movably connected to the lifting drive mechanism 232 to prevent the mold clamping drive module 230 from failing to work normally due to installation and processing errors.

[0087] See also Figure 1 , Figure 4 , Figure 5 and Figure 6 In some embodiments, the first positioning module 210 further includes a film-release lifting mechanism 214, which is disposed on the lower mold base 211 and located in the first cavity 212. Along the lifting direction of the film-release lifting mechanism 214, a through hole 224 is provided on the positioning fixture 220 for the lifting end of the film-release lifting mechanism 214 to pass through.

[0088] It can be understood that the film lifting mechanism 214 is used to lift the transfer film assembly 250 after the transfer film assembly 250 and the product 10 are attached and the transfer is completed, so as to initially separate the transfer film assembly 250 from the product 10 to avoid difficulty in film separation and ink removal when the ink is relatively wet.

[0089] Specifically, the film lifting mechanism 214 is arranged on the lower mold base 211 and is set through the positioning fixture 220. The film lifting mechanism 214 is located on one side of the positioning fixture 220. In this way, when lifting the transfer film assembly 250, one side of the transfer film assembly 250 can be lifted first. After the transfer of the product 10 is completed, the transfer film assembly 250 can form a certain angle when it is separated from the product 10, thereby improving the effect of separating the transfer film assembly 250 from the product 10.

[0090] The film lifting mechanism 214 includes a film lifting assembly 2140 and a film lifting block 2141. The film lifting assembly 2140 is arranged on the lower mold base 211. In the initial state (when not lifted), the film lifting block 2141 is movably embedded in the positioning fixture 220. The upper end surface of the film lifting block 2141 is flush with or lower than the upper end surface of the positioning fixture 220. The film lifting block 2141 is connected to the film lifting assembly 2140. The film lifting assembly 2140 can drive the film lifting block 2141 to rise and fall, so as to lift the transfer film assembly 250.

[0091] Optionally, the membrane lifting assembly 2140 includes but is not limited to an oil cylinder, an air cylinder, an electric push rod, an electric cylinder or a screw motor.

[0092] See also Figure 1 , Figure 4 , Figure 5 and Figure 6In some embodiments, the first positioning module 210 further includes a material picking and lifting mechanism 215, which is disposed on the lower mold base 211 and located in the first mold cavity 212. The material picking and lifting mechanism 215 includes a material picking and lifting assembly 2150 disposed in the lower mold base 211 and a lifting rod 2151 connected to the material picking and lifting assembly 2150, and the lifting rod 2151 is arranged to penetrate the positioning fixture 220 in the vertical direction. The positioning fixture 220 is provided with a positioning portion 222 (see Figure 5 ), the positioning fixture 220 is provided with a lifting hole 225 for the lifting rod 2151 to pass through corresponding to the positioning portion 222. In this way, under the drive of the material taking lifting assembly 2150, the lifting rod 2151 can extend out of the positioning fixture 220 in the vertical direction to lift the product 10, so that the product 10 is separated from the positioning fixture 220.

[0093] It is understandable that when the product 10 is fully printed, there is no area on the positioning jig 220 that can be sucked or grabbed to remove the product 10. At this time, the product 10 is lifted by the material lifting mechanism 215, so that the product 10 is separated from the positioning jig 220, so that it can be taken out from the side of the product 10 that is not printed with the pattern by tools or equipment, ensuring that the pattern printed on the product 10 is not damaged and the printing quality is guaranteed.

[0094] Optionally, the positioning portion 222 on the positioning fixture 220 is a groove or a boss structure.

[0095] Optionally, the material picking and lifting component 2150 of the material picking and lifting mechanism 215 includes but is not limited to an oil cylinder, a pneumatic cylinder, an electric push rod, an electric cylinder or a screw motor, etc.

[0096] See also Figure 4 and Figure 5 In this embodiment, the positioning fixture 220 is provided with a vacuum adsorption hole 221 for positioning the product 10, and the vacuum adsorption hole 221 is arranged in the area where the positioning portion 222 is located. The lower mold base 211 of the first positioning mold group 210 is provided with a vacuum connector 216 for external vacuum supply equipment, and the vacuum connector 216 is connected to the vacuum adsorption hole 221. In this way, the product 10 is positioned by vacuum adsorption.

[0097] It can be understood that the air flow channel connecting the vacuum joint 216 and the vacuum adsorption hole 221 is independent of the air flow channel connecting the first air nozzle 213 and the exhaust hole group 223 .

[0098] See also Figure 1 The transfer film includes a skeleton frame 251 and an elastic film 252 disposed on the skeleton frame 251 and covering a hollow area in the middle of the skeleton frame 251 .

[0099] Optionally, the elastic film 252 can be made of natural rubber, silicone, chloroprene rubber, plastic film or other materials with good elasticity and viscosity. Good elasticity can make the film easy to fit the printed surface of the product 10, and good viscosity can meet the function of printing ink patterns. Natural rubber is preferred.

[0100] See also Figures 1 to 6 Furthermore, this embodiment also provides a product printing device. The product printing device includes a frame, a screen printing device and the transfer device 200 provided above. The screen printing device and the transfer device 200 provided above are both arranged on the frame. The screen printing device is used to print a pattern layer to be transferred on a transfer film.

[0101] The above describes in detail the optional implementation methods of the embodiments of the present application in combination with the accompanying drawings. However, the embodiments of the present application are not limited to the specific details in the above implementation methods. Within the technical concept of the embodiments of the present application, various simple modifications can be made to the technical scheme of the embodiments of the present application, and these simple modifications all belong to the protection scope of the embodiments of the present application.

[0102] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present application will not further describe various possible combinations.

[0103] In addition, the various implementation methods of the embodiments of the present application may be arbitrarily combined, and as long as they do not violate the ideas of the embodiments of the present application, they should also be regarded as the contents disclosed in the embodiments of the present application.

Claims

1. A transfer device, characterized in that: include: Workbench; A first positioning module (210) is arranged on the workbench; A second positioning module (240) is arranged in alignment with the first positioning module (210), the second positioning module (240) comprising an upper die base (241) and a pre-pressing positioning mechanism (242) disposed in the upper die base (241), the pre-pressing positioning mechanism (242) facing the first positioning module (210); A mold clamping drive module (230) is arranged on the workbench and connected to the upper mold base (241); Transfer film assembly (250); During transfer, the transfer film assembly (250) is placed between the first positioning module (210) and the second positioning module (240); the first positioning module (210) and the second positioning module (240) are molded together to clamp the transfer film assembly (250) and form a closed air cavity on at least one side of the transfer film assembly (250) that is connected to an external air pressure device.

2. The transfer device according to claim 1, characterized in that: The pre-pressing positioning mechanism (242) comprises: A pre-pressing driving assembly (2420) is disposed on the upper die base (241); and The profiling press (2421) is arranged on the pre-pressing drive assembly (2420), and the side of the profiling press (2421) facing the first positioning module (210) is a profiling surface.

3. The transfer device according to claim 1, characterized in that: The transfer device (200) further comprises a positioning jig (220), the first positioning mold assembly (210) comprises a lower mold base (211), the lower mold base (211) is arranged on the workbench, a side of the lower mold base (211) facing away from the workbench is recessed to form a first cavity (212), the positioning jig (220) is accommodated in the first cavity (212), and the upper surface of the positioning jig (220) is lower than the upper surface of the lower mold base (211); During transfer, the lower mold base (211) abuts against the transfer film assembly (250), the transfer film assembly (250) closes the first cavity (212) and forms a first closed air cavity with the positioning fixture (220) that is connected to the external pneumatic device, and the pneumatic device provides negative pressure for the first closed air cavity.

4. The transfer device according to claim 3, characterized in that: The first positioning module (210) further includes: A film-lifting mechanism (214) is arranged on the lower die base (211) and is located in the first die cavity (212); Wherein, along the lifting direction of the membrane-release lifting mechanism (214), the positioning fixture (220) is provided with a through hole (224) for the lifting end of the membrane-release lifting mechanism (214) to pass through.

5. The transfer device according to claim 3, characterized in that: The first positioning module (210) further includes: A material picking and lifting mechanism (215) is arranged on the lower die base (211) and is located in the first die cavity (212); a lifting rod (2151) of the material picking and lifting mechanism (215) is arranged through the positioning fixture (220).

6. The transfer device according to claim 3, characterized in that: The positioning fixture (220) is provided with a positioning portion (222) for positioning the product (10), the positioning portion (222) is provided with a vacuum adsorption hole (221), and the positioning fixture (220) is also provided with an exhaust hole group (223); Wherein, the first positioning module (210) is provided with a vacuum connector (216) for externally connecting to a vacuum supply device, and the vacuum connector (216) is connected to the vacuum adsorption hole (221).

7. The transfer device according to any one of claims 1 to 6, characterized in that: The upper die base (241) is recessed on one side facing the first positioning die set (210) to form a second die cavity (243), and the pre-pressing positioning mechanism (242) is accommodated in the second die cavity (243); During transfer, the upper mold base (241) abuts against the transfer film assembly (250), and the transfer film assembly (250) closes the second mold cavity (243) to form a second closed air cavity connected to the external air pressure device, and the air pressure device provides positive pressure for the second closed air cavity.

8. The transfer device according to claim 1, characterized in that: The mold clamping drive module (230) comprises: A lifting guide mechanism (231) is arranged on the workbench, and the upper die base (241) is arranged on the lifting guide mechanism (231); and A lifting drive mechanism (232) is arranged on the workbench and connected to the upper die base (241).

9. The transfer device according to claim 8, characterized in that: The second positioning die set (240) further comprises a slipknot seat (244) arranged on the upper die seat body (241), and the slipknot seat (244) is movably connected to the lifting drive mechanism (232).

10. A product printing device, characterized in that: It comprises a transfer device (200) according to any one of claims 1 to 9.

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