Printing apparatus
By using a combination of a contouring pressure head and a positioning module in printing equipment, the problem of pattern offset in film transfer equipment was solved, and high-precision pattern transfer on complex surfaces was achieved.
Patent Information
- Application Number
- CN202422943679.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Existing film transfer equipment is prone to pattern misalignment and low printing accuracy during the printing process.
A printing device is used, including a frame, a printing unit, a transfer platform unit, and a transfer execution unit. The device utilizes a contouring pressure head and a positioning module to ensure uniform adhesion between the adhesive film and the product surface. The pattern is transferred by forming a clamping structure through a first transfer module and a second transfer module.
It improves printing accuracy and quality, avoids pattern misalignment, and enables high-precision pattern transfer on complex surfaces.
Smart Images
Figure CN223533186U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of printing equipment technology, and specifically relates to a printing device. Background Technology
[0002] Currently, the main processes for mass printing and coloring on the surface of structural components include screen printing and pad printing.
[0003] 1. Screen printing is suitable for printing 2D flat or curved products with relatively flat surfaces and small height differences. It cannot print products with large height differences, such as curved surfaces, irregular surfaces, and four-sided curved surfaces (because it cannot use a squeegee).
[0004] 2. Pad printing is suitable for printing partial patterns such as frames, lines, and text on curved and irregularly shaped products. However, it cannot achieve frontal printing of large areas or printing of small-radius corners. The smaller the radius and the greater the height difference, the less ink the pad printing head can pick up, resulting in uneven printing, less ink, and color variations.
[0005] 3. Currently, the printing process often uses a combination of pad printing and screen printing, which involves multiple steps. This process is costly and does not produce a single print. The ink junctions in screen printing and pad printing have steps, which affects the appearance of the ink.
[0006] Existing technology also provides a film transfer printing device, which transfers the pattern onto the product by screen printing a pattern onto the film, and then using an upper and lower mold clamping together, applying pressure through the upper mold and vacuuming the lower mold to make the film adhere to the product. Although this can solve the above problems, in actual use, it has been found that when the upper mold applies positive pressure and the lower mold applies negative pressure, it is difficult to control the airflow precision, thus making it impossible to ensure the uniformity of force on the film. That is, the force on the film is inconsistent in different parts, and the position of the film stretched and adhered to the product is uncertain, which can easily lead to pattern misalignment and low printing accuracy. Utility Model Content
[0007] The purpose of this application is to provide a printing device to solve the problems of pattern misalignment and low printing accuracy in existing film transfer printing equipment.
[0008] To achieve the above objectives, this application provides a printing apparatus, comprising:
[0009] The frame includes printing stations and transfer stations arranged sequentially along a first direction;
[0010] A printing device is installed at the printing station;
[0011] A transfer platform device is movable on the frame along the first direction, and a transfer film assembly is provided on the transfer platform device; and
[0012] The transfer execution device includes a first transfer module and a second transfer module arranged in alignment along a second direction, with a transfer space formed between the first transfer module and the second transfer module for the transfer film assembly to enter and exit.
[0013] Wherein, the first direction is perpendicular to the second direction, the first transfer module is provided with a contouring pressure head on the side facing the second transfer module, and the second transfer module is provided with a positioning part.
[0014] As a further improvement to the above technical solution:
[0015] In some embodiments, the conformal indenter is an elastic material indenter or an elastic capsule indenter, wherein the elastic capsule indenter includes an elastic membrane capsule and a liquid or solid-liquid mixture or solid-liquid phase change material filled within the elastic membrane capsule.
[0016] In some embodiments, the first transfer module further includes:
[0017] A first transfer holder is mounted on the frame;
[0018] A movable adjustment module is mounted on the first transfer bracket and includes a linear drive assembly and a lifting drive assembly; the contouring pressure head is mounted on the movable adjustment module.
[0019] Wherein, the lifting drive component has a lifting drive direction along the second direction, and the linear drive component has a drive direction along the third direction and is perpendicular to both the first and second directions.
[0020] In some embodiments, the first transfer module further includes a first alignment adjustment component capable of horizontal movement adjustment and rotation adjustment about the second direction;
[0021] The first alignment adjustment component is disposed on the moving adjustment module, and the contouring pressure head is disposed on the first alignment adjustment component.
[0022] In some embodiments, the first alignment adjustment component includes:
[0023] The connecting plate is connected to the movable adjustment module;
[0024] A translation alignment module is mounted on the connecting plate and can output a movement that translates along a first direction.
[0025] A rotation alignment module, mounted on the translation alignment module, capable of outputting rotational motion about the second direction; and
[0026] Alignment plate, disposed on the rotation alignment module;
[0027] The contouring pressure head is disposed on the alignment plate.
[0028] In some embodiments, the first transfer module further includes a pressure detection module disposed between the lifting drive assembly and the contouring pressure head.
[0029] In some embodiments, the second transfer module includes:
[0030] The second transfer holder is mounted on the frame;
[0031] A lifting drive assembly is mounted on the second transfer bracket;
[0032] The second alignment adjustment component is disposed on the lifting drive component and located at one end of the lifting drive component facing the first transfer module. The second alignment adjustment component has the degree of freedom to move horizontally and rotate around the second direction.
[0033] A positioning mold base is disposed on the second alignment adjustment assembly, and the positioning mold base is provided with the positioning part.
[0034] In some embodiments, the positioning mold base includes a positioning fixture, the positioning part is a product adsorption hole provided in the positioning area of the positioning fixture, and the non-positioning area of the positioning fixture is provided with a membrane negative pressure suction hole.
[0035] In some embodiments, the second transfer module further includes a weight-reducing support assembly disposed on the frame and applying a thrust to the second alignment adjustment assembly along the lifting direction of the lifting drive assembly.
[0036] In some embodiments, the printing apparatus includes a printing fixture disposed on the frame, the printing fixture having a breathable support body inside, the breathable support body being cast from a mixture of epoxy resin and metal minerals.
[0037] Compared with the prior art, this application provides a printing device with the following technical effects:
[0038] The printing equipment provided in this application, when performing printing operations, first controls the transfer platform device to move to the printing station, where the printing device prints the corresponding pattern on the transfer film assembly. Then, it controls the transfer platform device to move to the transfer station again, where the product can be positioned on the positioning part of the second transfer module. At this time, the transfer film assembly is located between the first and second transfer modules. The first and second transfer modules form a clamping mechanism between the transfer film assemblies. The contouring pressure head in the first transfer module pushes the adhesive film in the transfer film assembly, causing the adhesive film to adhere to the surface of the product to be printed, thereby achieving pattern transfer. Because the shape of the contouring pressure head is consistent with the shape of the surface of the product to be printed, it ensures more uniform force during adhesive film transfer. This guarantees the position of the adhesive film stretched and adhered to the product, thus avoiding pattern misalignment and improving printing accuracy and quality.
[0039] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description
[0040] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:
[0041] Figure 1 This is a three-dimensional structural diagram of a printing device provided in an embodiment of this application;
[0042] Figure 2 for Figure 1 A partial structural schematic diagram of the transfer execution device and transfer platform device in the printing equipment shown.
[0043] Figure 3 This is a three-dimensional structural diagram of the first transfer module in the transfer execution device provided in the embodiments of this application;
[0044] Figure 4 for Figure 3 A partially exploded view of the first alignment adjustment component in the first transfer module shown.
[0045] Figure 5 A three-dimensional structural diagram of the second transfer module in the transfer execution device provided in the embodiments of this application;
[0046] Figure 6 A perspective view of a screen printing fixture in a printing apparatus provided in this application embodiment;
[0047] Figure 7This is a schematic diagram of the vacuum adsorption platform and the adhesive film in an existing printing apparatus.
[0048] Figure 8 for Figure 2 A three-dimensional structural diagram of the transfer platform device in the printing equipment shown;
[0049] Figure 9 for Figure 8 The diagram shows a three-dimensional structure of the transfer platform device, which conceals the frame and horizontal drive module.
[0050] Figure 10 for Figure 9 A magnified view of a portion of point A in the middle;
[0051] Figure 11 for Figure 9 An exploded view of the transfer platform device shown.
[0052] Figure 12 A schematic diagram of a product to be printed is provided for an embodiment of this application;
[0053] Figure 13 This is another schematic diagram of a product to be printed, provided as an embodiment of this application.
[0054] Explanation of reference numerals in the attached figures
[0055] 100. Machine frame; 110. Transfer station; 120. Printing station;
[0056] 200. Printing apparatus; 210. Printing fixture; 211. Ventilated support;
[0057] 300. Transfer film assembly; 310. Skeleton frame; 320. Adhesive film;
[0058] 400. Transfer platform device; 410. Support base; 411. Hole; 420. Floating support module; 421. Printing base; 4210. Rotating shaft; 4211. Bearing; 422. Floating support seat; 4220. Limiting support; 4221. Upper limit part; 4222. Lower limit part; 4223. Floating support; 4224. Movable limiting block; 4225. Linear guide rail assembly; 430. Tilting drive module; 440. Horizontal drive module; 441. Track;
[0059] 500. Transfer execution device; 510. First transfer module; 511. Contouring pressure head; 512. First transfer bracket; 513. Linear drive assembly; 514. Lifting drive assembly; 515. First alignment adjustment assembly; 5150. Alignment plate; 5151. Rotary alignment module; 5152. Translational alignment module; 5153. Connecting plate; 520. Second transfer module; 521. Second transfer bracket; 522. Lifting drive assembly; 523. Second alignment adjustment assembly; 524. Positioning mold base; 525. Positioning part; 526. Weight reduction support assembly;
[0060] 600. Cleaning equipment;
[0061] L, first direction; H, second direction; W, third direction. Detailed Implementation
[0062] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.
[0063] The present application will now be described in detail with reference to the accompanying drawings and exemplary embodiments.
[0064] Example
[0065] Please see Figure 1 and Figure 2 This embodiment provides a printing device that is applicable to printing patterns on flat surfaces, curved surfaces, and some complex irregular surfaces.
[0066] In this embodiment, the printing equipment includes a frame 100, a printing device 200, a transfer platform device 400, a transfer film assembly 300, and a transfer execution device 500. The frame 100 is placed on a foundation and is arranged horizontally, and the printing device 200, the transfer platform device 400, the transfer film assembly 300, and the transfer execution device 500 are all mounted on the frame 100.
[0067] Furthermore, for the convenience of subsequent description, in this embodiment, the length direction of the rack 100 is defined as the first direction L, the height direction of the rack 100 is defined as the second direction H, and the width direction of the rack 100 is defined as the third direction W. The first direction L, the second direction H, and the third direction W are perpendicular to each other.
[0068] Specifically, the frame 100 includes a printing station 120 and a transfer station 110 arranged sequentially along the first direction L. A printing device 200 is disposed at the printing station 120. A transfer platform device 400 is movably disposed on the frame 100 along the first direction L, and a transfer film assembly 300 is provided on the transfer platform device 400. Thus, the transfer platform device 400 can move the transfer film assembly 300 between the printing station 120 and the transfer station 110. The transfer film assembly 300 includes a frame 310 and an elastic adhesive film 320 disposed on the frame 310. The printing device 200 can print a pattern onto the adhesive film 320, which is then transferred to the product by the transfer execution device 500.
[0069] The transfer execution device 500 includes a first transfer module 510 and a second transfer module 520 arranged in alignment along a second direction H, wherein the first direction L is perpendicular to the second direction H, and a transfer space is formed between the first transfer module 510 and the second transfer module 520 for the transfer film assembly 300 to enter and exit. The first transfer module 510 is provided with a contouring pressure head 511 on the side facing the second transfer module 520, and the second transfer module 520 is provided with a positioning part 525.
[0070] The positioning part 525 can be used for product positioning, and the first transfer module 510 and the second transfer module 520 can be closed and opened along the second direction H.
[0071] It should be noted that, firstly, the transfer platform device 400 is moved to the printing station 120, and the printing device 200 prints the corresponding pattern on the transfer film assembly 300. Then, the transfer platform device 400 is moved to the transfer station 110, and the product can be positioned on the positioning part 525 of the second transfer module 520. At this time, the transfer film assembly 300 is between the first transfer module 510 and the second transfer module 520. The first transfer module 510 and the second transfer module 520 are molded together to form a clamping of the transfer film assembly 300. The contouring pressure head 511 in the first transfer module 510 pushes the adhesive film 320 in the transfer film assembly 300, so that the adhesive film 320 adheres to the surface of the product to be printed, thereby realizing the transfer of the pattern. Since the shape of the contouring pressure head 511 is consistent with the shape of the surface to be printed on the product, it can ensure that the force is more uniform when the adhesive film 320 is transferred. Therefore, the position of the adhesive film 320 stretched and adhered to the product can be guaranteed, thereby avoiding pattern deviation and improving printing accuracy and quality.
[0072] Specifically, the printing apparatus 200 may be a screen printing apparatus, but it should be understood that the above is only an example and is not intended to limit the scope of protection of this application.
[0073] In this embodiment, the contouring pressure head 511 is an elastic material pressure head or an elastic capsule pressure head. The elastic contouring pressure head 511 can undergo large deformation when pressed down, so that when pressing the adhesive film 320, it can ensure that the adhesive film 320 better adheres to the printing surface of the product. Especially for areas such as stepped surfaces that are prone to incomplete transfer, the elastic contouring pressure head 511 can fully transfer the pattern on the adhesive film 320 to the product, improving printing accuracy and quality.
[0074] Optionally, the elastic material pressure head is made of elastic materials such as silicone. The elastic capsule pressure head includes an elastic membrane capsule and a liquid or solid-liquid mixture or solid-liquid phase change material filled in the elastic membrane capsule. The material filled in the elastic membrane capsule has good fluidity and can fully conformally press the film 320 pressed onto a flat, regular or irregular curved surface or irregular shaped surface to improve the pattern transfer effect.
[0075] To more clearly describe the technical solution of this application, the printing equipment provided in this embodiment will be described in detail below:
[0076] Please see Figure 1 , Figure 2 and Figure 3 The aforementioned first transfer module 510 further includes a first transfer bracket 512 and a movement adjustment module disposed on the first transfer bracket 512. The movement adjustment module includes a linear drive assembly 513 and a lifting drive assembly 514; the first transfer bracket 512 is disposed on the frame 100, wherein the first transfer bracket 512 is vertically arranged above the frame 100 and forms a certain amount of movable space with the frame 100. A contouring pressure head 511 is disposed on the movement adjustment module.
[0077] In some embodiments, a linear drive assembly 513 is disposed on a first transfer bracket 512. A lifting drive assembly 514 is disposed on the linear drive assembly 513, and a contouring pressure head 511 is disposed at one end of the lifting drive assembly 514 facing the second transfer module 520. The lifting drive direction of the lifting drive assembly 514 is along a second direction H, and the drive direction of the linear drive assembly 513 is perpendicular to the first direction L.
[0078] In other embodiments, the lifting drive assembly 514 is disposed on the first transfer bracket 512. A linear drive assembly 513 is disposed on the lifting drive assembly 514, and a contouring pressure head 511 is disposed at the end of the linear drive assembly 513 facing the second transfer module 520. This also allows for position adjustment of the contouring pressure head 511 along the third direction W and the second direction H.
[0079] In this embodiment, the driving direction of the linear drive component 513 is defined as the third direction W. Thus, the linear drive component 513 can drive the lifting drive component 514 and the contouring pressure head 511 to adjust in the third direction W, ensuring that the contouring pressure head 511 is aligned with the surface of the product to be printed.
[0080] Optionally, the linear drive assembly 513 includes a linear motor, which drives the entire lifting drive assembly 514 to move. Of course, in some embodiments, the linear drive assembly 513 may also be selected as a linear module such as a cylinder, hydraulic cylinder, electric cylinder, or motor lead screw.
[0081] Optionally, the lifting drive assembly 514 may be an electric cylinder, hydraulic cylinder, pneumatic cylinder, or motor lead screw, etc. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.
[0082] Please refer to the following: Figure 4 Furthermore, the first transfer module 510 also includes a first alignment adjustment component 515 capable of horizontal movement and rotation adjustment around a second direction H. The first alignment adjustment component 515 is mounted on the lifting drive component 514, and the contouring pressure head 511 is mounted on the first alignment adjustment component 515. Thus, the contouring pressure head 511 can be adjusted horizontally and rotated around the second direction H via the first alignment adjustment component 515, further ensuring alignment between the contouring pressure head 511 and the product, improving printing quality and accuracy.
[0083] Specifically, the first alignment adjustment assembly 515 includes an alignment plate 5150, a translational alignment module 5152, a rotational alignment module 5151, and a connecting plate 5153. The connecting plate 5153 is connected to the upper lifting drive assembly 514. The translational alignment module 5152 is mounted on the connecting plate 5153 and can move along a third direction W on the connecting plate 5153. The rotational alignment module 5151 is connected to one side of the translational alignment module 5152. The alignment plate 5150 is rotatably connected to the bottom of both the translational alignment module 5152 and the rotational alignment module 5151. The driving end of the rotational alignment module 5151 is also provided with an X-axis displacement compensation component and a Y-axis displacement compensation component. The contouring pressure head 511 is connected to the lower end of the alignment plate 5150. Therefore, the motor drive of the rotation alignment module 5151 can drive the alignment plate 5150 to make fine adjustments around the second direction H, and the motor drive of the translation alignment module 5152 can drive the rotation alignment module 5151 and the alignment plate 5150 to translate as a whole along the third direction W.
[0084] Optionally, the translational alignment module 5152 includes a motor and a lead screw assembly, with the motor driving the lead screw assembly to output horizontal movement along a third direction W. The rotational alignment module 5151 is selected as a motor, with the motor outputting rotational motion.
[0085] Furthermore, the first transfer module 510 also includes a pressure detection module (not shown), which is located between the lifting drive assembly 514 and the contouring pressure head 511. The pressure detection module can detect the pressure of the contouring pressure head 511 pressing down, thereby accurately controlling the pressure when the contouring pressure head 511 contacts the product, protecting the adhesive film 320 and the product, while ensuring printing quality and accuracy.
[0086] Optionally, the pressure detection module can be a pressure sensor or a pressure strain gauge.
[0087] Please see Figure 1 , Figure 2 and Figure 5 The second transfer module 520 includes a second transfer bracket 521, a lifting drive assembly 522, a second alignment adjustment assembly 523, and a positioning mold base 524. The second transfer bracket 521 is mounted on the frame 100; the lifting drive assembly 522 is mounted on the second transfer bracket 521; the second alignment adjustment assembly 523 is mounted on the lifting drive assembly 522 and located at one end of the lifting drive assembly 522 facing the first transfer module 510, and the second alignment adjustment assembly 523 has the freedom to move horizontally and rotate around the second direction H; the positioning mold base 524 is mounted on the second alignment adjustment assembly 523, and the positioning mold base 524 is provided with the positioning part 525.
[0088] Thus, when transfer is required, the lifting drive assembly 522 drives the second alignment adjustment assembly 523 and the positioning mold base 524 to rise along the second direction H, so that the positioning mold base 524 contacts the transfer film assembly 300.
[0089] Specifically, the positioning mold base 524 includes a mold base body and a positioning fixture embedded in the top surface of the mold base body. The positioning part 525 can be a product adsorption hole located in the positioning area in the middle of the positioning fixture for adsorption and positioning of the product. The non-positioning area of the positioning fixture located around the positioning area is provided with a film negative pressure suction hole for adsorbing the adhesive film 320. The top surface of the positioning mold base 524 is provided with a vacuum chamber facing the first transfer module 510 and is adapted to form a closed air chamber with the transfer film assembly 300 connected to an external negative pressure device. The positioning mold base 524 is externally connected to a negative pressure device, which draws air from the vacuum chamber to create negative pressure, so that the adhesive film 320 in the transfer film assembly 300 adheres to the surface of the product to be printed. Thus, under the combined action of vacuum negative pressure adsorption and contouring pressure head 511, the adhesive film 320 can better adhere to the surface of the product to be printed, further ensuring that the adhesive film 320 is subjected to more uniform force during transfer. Therefore, the position of the adhesive film 320 stretched and adhered to the product can be guaranteed, thereby avoiding pattern deviation and improving printing accuracy and quality.
[0090] Optionally, the lifting drive assembly 522 may be an electric cylinder, hydraulic cylinder, pneumatic cylinder, or motor lead screw, etc. It should be understood that the above are merely illustrative examples and are not intended to limit the scope of protection of this application.
[0091] Compared with the structure of the first alignment adjustment component 515, the structure of the second alignment adjustment component 523 has an additional translation alignment module 5152, that is, an additional degree of freedom of adjustment that moves along the first direction L, so as to realize the movement adjustment of the first direction L and the third direction W, as well as the rotation adjustment around the second direction H.
[0092] Please see Figure 5 Furthermore, the second transfer module 520 also includes a weight-reducing support component 526. The weight-reducing support component 526 is mounted on the frame 100 and applies a thrust to the second alignment adjustment component 523 along the lifting direction of the lifting drive component 522. Thus, the weight-reducing support component 526 provides auxiliary support for the positioning mold base 524 and the second alignment adjustment component 523 in the second transfer module 520, reducing the pressure on the lifting drive component 522. Therefore, during mold closing, the first transfer module 510 only needs to bear the pressure from the contouring pressure head 511, which is relatively much smaller. Consequently, there is no need for special design for the load-bearing capacity of the second alignment adjustment component 523, simplifying the structure and saving costs.
[0093] Please see Figure 6 Furthermore, the printing apparatus 200 includes a printing fixture 210 disposed on the frame 100, and the printing fixture 210 is provided with a breathable support 211, which is formed by casting a mixture of epoxy resin and metal minerals.
[0094] Please refer to the following: Figure 7 It should be noted that if the vacuum adsorption platform at the top of the printing fixture 210 is made of conventional materials, opening vacuum holes on the platform to grip the adhesive film 320 will cause varying degrees of indentation in the film 320 at the opening locations. The degree of indentation is directly proportional to the diameter of the opening and the vacuum level; the larger the diameter of the suction hole, the greater the indentation; the greater the vacuum level, the greater the indentation. Simultaneously, the greater the distance between the suction holes, the more likely the upper surface of the vacuum adsorption platform will randomly create sealed cavities when in contact with the adhesive film 320, sealing gas within these cavities and forming bubbles. The greater the distance, the larger and more numerous these randomly formed bubbles become, leading to bulging of the adhesive film 320. Vacuum adsorption deformation and bubble-induced indentations and bulges in the adhesive film 320 will cause uneven ink thickness during screen printing, resulting in ink color variations, excessively thick or thin ink, insufficient ink, and half-texture defects, severely impacting product quality. Furthermore, conventional screen printing fixture suction platforms do not have good anti-static effects. When the film 320 separates from the fixture, the electrostatic adsorption force will pull the film 320, causing the pattern on the film 320 to deform, and the ink pattern will also show defects such as wrinkles and stripes.
[0095] Therefore, to address this issue, the breathable support 211 provided in this application is made by casting a mixture of epoxy resin and metal minerals. The resulting plate has micropores of 0.03mm-0.05mm on its surface, with consistent pore size and uniform pore distribution. It also possesses good electrostatic dissipation and good machinability. Using this plate as a vacuum adsorption platform for screen printing fixtures results in a smooth and delicate adsorption surface, ensuring the flatness of the adhesive film 320 during screen printing. Furthermore, it effectively eliminates the electrostatic adhesion force that causes the adhesive film to peel off, preventing film deformation and ensuring uniform and deformation-free ink application during screen printing, thereby improving printing effect and quality.
[0096] Please see Figure 2 , Figure 8 , Figure 9 , Figure 10 and Figure 11 The aforementioned transfer platform device 400 includes a horizontal drive module 440, a support base 410, and a floating support module 420. The horizontal drive module 440 is mounted on the frame 100; the support base 410 is mounted on the horizontal drive module 440; and the floating support module 420 is mounted on the support base 410. The transfer film assembly 300 is mounted on the floating support module 420, and the support base 410 has a perforation 411 to allow the transfer film assembly 300 to pass through.
[0097] Understandably, the floating support module 420 has a floating stroke perpendicular to the support base 410, thereby allowing the transfer film assembly 300 to also have a floating stroke perpendicular to the support base 410, preventing direct impact damage to the transfer film assembly 300 when the first transfer module 510 and the second transfer module 520 are closed. The perforated hole 411 prevents interference between the first transfer module 510 and the second transfer module 520 and the transfer platform device 400 when they are closed, facilitating the application of pressure to both sides of the transfer film assembly 300 or enabling the transfer film assembly 300 to contact the product surface for transfer. The horizontal drive module 440 can drive the support base 410 and the floating support module 420 to move back and forth between the printing station 120 and the transfer station 110.
[0098] The floating support module 420 includes a printing base 421 and two floating support seats 422. Both floating support seats 422 are mounted on the support base 410 and are aligned along a third direction W (the width direction of the frame 100). The printing base 421 is positioned between and connected to the two floating support seats 422. The transfer film assembly 300 is detachably mounted on the printing base 421 for easy maintenance and replacement.
[0099] The aforementioned floating support 422 includes a limiting support 4220 and a floating support 4223. In this embodiment, two limiting supports 4220 are provided, both of which are disposed on the support base 410 and arranged in alignment along the first direction L (along the length direction of the frame 100). The floating support 4223 is disposed between the two limiting supports 4220, and the floating support 4223 slides with the two limiting supports 4220 respectively through a linear guide rail assembly 4225. The linear guide rail assembly 4225 extends along the second direction H, so that the floating support 4223 has a vertical floating stroke perpendicular to the plane of the support base 410.
[0100] Furthermore, each limiting support 4220 has an upper limiting portion 4221 and a lower limiting portion 4222, and the floating support 4223 is provided with a movable limiting block 4224, which is located between the upper limiting portion 4221 and the lower limiting portion 4222. In this way, the upper limiting portion 4221 and the lower limiting portion 4222 are used to limit the floating stroke of the floating support 4223 within the limiting support 4220, while preventing the limiting support 4220 from detaching from the limiting support 4220 during floating.
[0101] In this embodiment, the printing base 421 and the floating support base 422 are rotatably engaged, so that the transfer base can drive the transfer film assembly 300 to rotate in the vertical plane, so that the side of the transfer film assembly 300 with the printed pattern layer faces the product, thereby adapting to the transfer of the product in different positions on the transfer film assembly 300, making the transfer more flexible.
[0102] For example, when the product is placed below the transfer film assembly 300, a pattern layer is first printed on the transfer film assembly 300 using a screen printing device (at this time, the pattern layer is located on the side of the transfer film assembly 300 facing away from the product). Then, the transfer base is rotated 180° so that the pattern layer on the transfer film assembly 300 faces the product, facilitating the transfer. It can also be understood that the perforated hole 411 on the support base 410 can provide clearance for the rotation of the printing base 421 and the transfer film assembly 300.
[0103] Specifically, the printing base 421 has a rotating shaft 4210 at each end, and the rotating shaft 4210 and the corresponding floating support 4223 are rotated together by bearing 4211.
[0104] In this embodiment, the transfer platform device 400 further includes a flip drive module 430. The flip drive module 430 is disposed on a floating support 4223 of one of the floating support seats 422 and is connected to the rotation shaft 4210 at one end of the printing seat 421. The flip drive module 430 is used to drive the printing seat 421 to flip and change position. In this way, the entire flip drive module 430 is installed on the corresponding floating support 4223, so that it can float synchronously up and down with the floating support 4223.
[0105] The horizontal drive module 440 includes a track 441 laid on the frame 100 along the first direction L and a linear drive mechanism disposed on the frame 100. The support base 410 is slidably engaged with the track 441 through a slide block, and the linear drive mechanism is connected to the support base 410.
[0106] Please see Figure 1 In some embodiments, the printing apparatus further includes a cleaning device 600, which is disposed on the frame 100 and between the transfer station 110 and the printing station 120, for cleaning the ink on the transfer film assembly 300.
[0107] Compared with existing technologies, the printing equipment provided in this embodiment also has the following advantages:
[0108] (1) As Figure 12 The product shown has curved sides. Traditional printing methods first print the pattern onto a flexible substrate using a roll-to-roll or roller-to-roll method, resulting in low printing accuracy. The film transfer process also leads to low printing accuracy in the second step. However, the printing equipment provided in this embodiment uses a flexible contoured pressure head 511 to press against the adhesive film 320, ensuring that the curved sides are properly pressed. Combined with the negative pressure adsorption of the positioning mold base 524, the printing quality is further improved, and printing is completed in one pass.
[0109] (2) Figure 13 Another product to be printed, shown, has a large surface B and a concave surface C to be printed. Traditional printing methods require phased printing, such as first screen printing the large surface and then pad printing the concave surface, resulting in a transition step at the junction of the large and concave surfaces. Using the structure and process of this embodiment, the concave and large surfaces can be printed in one step during the pad printing stage through the negative pressure adsorption of the elastic contouring head 511 and the positioning mold base 524, avoiding the transition step problem.
[0110] It should be noted that, in this application, unless otherwise stated, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" used to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0111] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0112] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0113] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0114] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A printing apparatus, characterized in that, include: The frame (100) includes a printing station (120) and a transfer station (110) arranged sequentially along a first direction (L); A printing device (200) is provided at the printing station (120); A transfer platform device (400) is movably mounted on the frame (100) along the first direction (L), and a transfer film assembly (300) is provided on the transfer platform device (400); and The transfer execution device (500) includes a first transfer module (510) and a second transfer module (520) arranged in alignment along a second direction (H), and a transfer space is formed between the first transfer module (510) and the second transfer module (520) for the transfer film assembly (300) to enter and exit. Wherein, the first direction (L) is perpendicular to the second direction (H), the first transfer module (510) is provided with a contouring pressure head (511) on the side facing the second transfer module (520), and the second transfer module (520) is provided with a positioning part (525).
2. The printing equipment according to claim 1, characterized in that, The conformal indenter (511) is an elastic material indenter or an elastic capsule indenter. The elastic capsule indenter includes an elastic membrane and a liquid or solid-liquid mixture or solid-liquid phase change material filled in the elastic membrane.
3. The printing equipment according to claim 1, characterized in that, The first transfer module (510) also includes: The first transfer holder (512) is disposed on the frame (100); The moving adjustment module is disposed on the first transfer bracket (512) and includes a linear drive assembly (513) and a lifting drive assembly (514); the contouring pressure head (511) is disposed on the moving adjustment module; The lifting drive assembly (514) is driven along the second direction (H), and the linear drive assembly (513) is driven along the third direction (W) and is perpendicular to both the first direction (L) and the second direction (H).
4. The printing equipment according to claim 3, characterized in that, The first transfer module (510) further includes a first alignment adjustment component (515) that can be adjusted horizontally and rotated about the second direction (H); The first alignment adjustment component (515) is disposed on the moving adjustment module, and the contouring pressure head (511) is disposed on the first alignment adjustment component (515).
5. The printing equipment according to claim 4, characterized in that, The first alignment adjustment component (515) includes: The connecting plate (5153) is connected to the movable adjustment module; The translation alignment module (5152) is disposed on the connecting plate (5153) and can output a movement that translates along the first direction (L); A rotation alignment module (5151) is disposed on the translation alignment module (5152) and is capable of outputting rotational motion about the second direction (H); and Alignment plate (5150) is disposed on the rotation alignment module (5151); The contouring pressure head (511) is disposed on the alignment plate (5150).
6. The printing equipment according to claim 3, characterized in that, The first transfer module (510) also includes a pressure detection module, which is disposed between the lifting drive assembly (514) and the contouring pressure head (511).
7. The printing equipment according to claim 1, characterized in that, The second transfer module (520) includes: The second transfer holder (521) is disposed on the frame (100); A lifting drive assembly (522) is disposed on the second transfer bracket (521); The second alignment adjustment component (523) is disposed on the lifting drive component (522) and located at one end of the lifting drive component (522) facing the first transfer module (510). The second alignment adjustment component (523) has the freedom to move horizontally and rotate around the second direction (H). A positioning mold base (524) is disposed on the second alignment adjustment component (523), and the positioning part (525) is provided on the positioning mold base (524).
8. The printing equipment according to claim 7, characterized in that, The positioning mold base (524) includes a positioning fixture, the positioning part (525) is a product adsorption hole provided in the positioning area of the positioning fixture, and the non-positioning area of the positioning fixture is provided with a membrane negative pressure suction hole.
9. The printing equipment according to claim 7, characterized in that, The second transfer module (520) further includes a weight-reducing support assembly (526), which is disposed on the frame (100) and applies a thrust to the second alignment adjustment assembly (523) along the lifting direction of the lifting drive assembly (522).
10. The printing equipment according to any one of claims 1-9, characterized in that, The printing apparatus (200) includes a printing fixture (210) disposed on the frame (100), and the printing fixture (210) is provided with a breathable support (211), which is formed by casting a mixture of epoxy resin and metal minerals.