A flexible thin film imprinting apparatus

Abstract

The application discloses a flexible film stamping device, and belongs to the technical field of stamping devices, which comprises a feeding mechanism, a dispensing mechanism, a stamping mechanism and a discharging mechanism arranged in sequence along a production direction. The feeding mechanism comprises a unwinding part, and the flexible film is unwound through the unwinding part. The stamping mechanism comprises a first stamping assembly and a second stamping assembly, the first stamping assembly comprises a first driving part and a first stamping part. The second stamping assembly comprises a second stamping part and a second driving part. It also comprises a host computer. The dispensing mechanism comprises a first dispensing part and a second dispensing part. It also comprises a curing mechanism, which comprises a mounting part, a curing part and an observation part. The discharging mechanism comprises a winding part and a third driving part. The flexible film stamping device of the application realizes synchronous stamping of both sides of the flexible film through the setting of the first stamping part and the second stamping part, and the setting of the host computer for controlling each component makes each step controllable and reliable, so that the whole stamping process has high precision and good effect.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of embossing devices, and particularly relates to a flexible film embossing device. BACKGROUND

[0002] The nano-embossing device is a new pattern transfer device different from traditional photolithography technology, which can copy nano-patterns from a template to a substrate, has the advantages of high yield, low cost and simple process. The device may gradually replace traditional photolithography technology in the future and become an important processing method in the fields of microelectronics and materials.

[0003] However, the nano-embossing device requires a complex process flow and parameter adjustment, and the operator needs to have professional skills and experience. The interaction between the material to be embossed and the mold may not be ideal, and the pressure distribution applied by the embossing device is uneven, which can cause uneven nanostructures in the embossing process. Nano-embossing leads to an uneven surface, and defects or uneven nanostructures occur. Moreover, the current nano-embossing technology can only realize single-sided embossing, or when double-sided embossing is realized, the micro-nano structures formed on the two sides of the material to be processed cannot be well aligned, which affects the effect of double-sided embossing. SUMMARY

[0004] In view of one or more of the above defects or improvement needs of the prior art, the application provides a flexible film embossing device, which can realize embossing of two surfaces of a diffraction grating by a nano-embossing device while ensuring good embossing effect.

[0005] To achieve the above-mentioned purpose, the application provides a flexible film embossing device, which comprises a feeding mechanism, a dispensing mechanism, an embossing mechanism and a discharging mechanism arranged in sequence along a production direction.

[0006] The feeding mechanism comprises a unwinding part, and the flexible film is unwound through the unwinding part.

[0007] The embossing mechanism comprises a first embossing assembly and a second embossing assembly. The first embossing assembly comprises a first driving part and a first embossing part, the first driving part drives the first embossing part to move, and the first embossing part is printed with a first pattern. The second embossing assembly comprises a second embossing part and a second driving part, the second driving part drives the second embossing part to rotate, the second embossing part is arranged corresponding to the first embossing part, and the second embossing part is printed with a second pattern. The flexible film passes between the first embossing part and the second embossing part.

[0008] Further comprising an upper computer, the first driving part and the second driving part are electrically connected with the upper computer.

[0009] The point glue mechanism comprises a first point glue member and a second point glue member, the first point glue member is arranged between the feeding mechanism and the stamping mechanism, the first point glue member can glue drops to the side of the flexible film facing the first point glue member; the second point glue member is arranged between the first stamping member and the flexible film, the second point glue member can glue drops to the side of the first stamping member facing the second point glue member;

[0010] Further comprising a curing mechanism, the curing mechanism comprises a mounting member, a curing member and an observation member, the curing member and the observation member are mounted on the mounting member, the curing member and the observation member are located in the second stamping member, the curing member can cure the glue on the flexible film; the observation member is electrically connected with the upper computer, the observation member can detect the real-time position of the first stamping member and the second stamping member and transmit data to the upper computer;

[0011] The discharging mechanism comprises a winding member and a third driving member, the third driving member drives the winding member to rotate, and the flexible film is wound through the winding member.

[0012] As a further improvement of the application, the first stamping assembly further comprises a driving member and a driven member, the first stamping member is connected with the driving member and the driven member at both ends respectively, the first driving member drives the driving member to rotate, the driving member drives the first stamping member to move, and the first stamping member drives the driven member to rotate;

[0013] The driven member is connected with a control assembly, and the control assembly is electrically connected with the upper computer.

[0014] As a further improvement of the application, the driving member and the driven member are provided with positioning members, the first stamping member is provided with positioning holes corresponding to the positioning members, the positioning members can pass through the positioning holes and position the first stamping member;

[0015] The driving member and the driven member are both connected with a first detection member, the first detection member is electrically connected with the upper computer, and the first detection member can detect the running position of the first stamping member and transmit data to the upper computer.

[0016] As a further improvement of the application, the second stamping assembly further comprises an adjusting platform, the second stamping member is connected with the adjusting platform, the adjusting platform is connected with a fourth driving member and a fifth driving member, the fourth driving member and the fifth driving member are electrically connected with the upper computer, the fourth driving member drives the adjusting platform to move in a first direction, and the fifth driving member drives the adjusting platform to move in a second direction;

[0017] The first direction is parallel to the production direction, the second direction is perpendicular to the first direction, and the second direction is parallel to the plane on which the adjusting platform is located.

[0018] As a further improvement of the present application, the second stamping assembly further comprises a limiting assembly, the limiting assembly comprises a limiting piece and a moving assembly, the limiting piece abuts against the second stamping piece, the moving assembly is electrically connected with the upper computer, the moving assembly is connected with the limiting piece, and the upper computer can control the moving assembly to drive the limiting piece to move along a third direction; the third direction is perpendicular to the plane on which the first direction and the second direction are located.

[0019] As a further improvement of the present application, the second stamping assembly further comprises a supporting assembly, the supporting assembly is connected to the adjusting platform, the supporting assembly comprises a first supporting piece, a second supporting piece and a third supporting piece, the first supporting piece supports the flexible film, the second supporting piece supports the first stamping piece, and the third supporting piece supports the second stamping piece.

[0020] As a further improvement of the present application, the feeding mechanism further comprises a first deviation correcting piece and a second detection piece, the first deviation correcting piece is arranged between the unwinding piece and the glue dispensing mechanism, and the flexible film passes through the first deviation correcting piece; the second detection piece is electrically connected with the first deviation correcting piece, and the second detection piece can detect the position of the flexible film in real time and feed back to the first deviation correcting piece.

[0021] As a further improvement of the present application, the feeding mechanism further comprises a first control piece and a third detection piece, the third detection piece and the first control piece are electrically connected with the upper computer, the first control piece is connected with the unwinding piece, the third detection piece detects the state of the flexible film and feeds back to the upper computer, and the upper computer can control the first control piece to control the tension of the unwinding piece.

[0022] As a further improvement of the present application, the discharging mechanism further comprises a second deviation correcting piece and a fourth detection piece, the second deviation correcting piece is arranged between the stamping mechanism and the winding piece, and the flexible film passes through the second deviation correcting piece; the fourth detection piece is electrically connected with the second deviation correcting piece, and the fourth detection piece can detect the position of the flexible film in real time and feed back to the second deviation correcting piece.

[0023] As a further improvement of the present application, the discharging mechanism further comprises a second control piece and a fifth detection piece, the fifth detection piece and the second control piece are electrically connected with the upper computer, the second control piece is connected with the winding piece, the fifth detection piece detects the state of the flexible film and feeds back to the upper computer, and the upper computer can control the second control piece to control the tension of the winding piece.

[0024] The above technical features can be combined with each other as long as they do not conflict with each other.

[0025] Overall, compared with the prior art, the above technical solutions conceived by the present application have the beneficial effects including:

[0026] (1) The flexible film embossing device of the present application realizes synchronous embossing of both sides of the flexible film by providing the first and second embossing members, and controls each component by the upper computer, so that each step is controllable and reliable, and the entire embossing process has high precision and good effect. In principle, the traditional registration on the flexible film is transferred to the registration on the master, eliminating the influence of factors such as stretching and deformation of the film on the overlay precision.

[0027] (2) The flexible film embossing device of the present application compensates in real time by controlling the platform, and adjusts in real time according to the visual positioning deviation of the observation member in the first and second directions. At the same time, the first embossing assembly can also be corrected, and the control assembly is used to control the first embossing member to ensure high-precision operation of the first embossing member, which can be used as a positioning reference.

[0028] (3) The flexible film embossing device of the present application connects the second driving member with the upper computer, and the running position signal of the first embossing member is matched in real time with the signal of the second driving member driving the second embossing member. And dynamically modify the driving force of the second driving member, real-time position compensation can be realized. At the same time, the back surface uses a flexible belt to carry the back surface master, that is, the first embossing member, and increases the wrap angle range of the front surface master and the back surface master in a flexible manner. The area of the pressing surface is increased during the embossing process, which is beneficial to the curing effect and demolding effect.

[0029] (4) The flexible film embossing device of the present application controls the tension of the flexible film during feeding and discharging by setting the first and second control members in cooperation with other structures, so as to ensure that the flexible film does not deform during operation, and the embossing effect is better and the whole is more reliable.

[0030] (5) The flexible film embossing device of the present application can realize synchronous embossing of both sides, and the front surface master and the back surface master run synchronously to overlay the front surface pattern and the back surface pattern on the intermediate film. Taking the back surface master and the first embossing member as the reference, the overlay precision is controlled by controlling the offset of the front surface master, that is, the second embossing member. At the same time, the observation member is provided to monitor the angle deviation value of the first and second embossing members, and the corresponding deviation value is transmitted to the adjusting platform, and the adjusting platform compensates the deviation value accordingly. Moreover, the first supporting member limits the feeding path of the flexible film, providing a demolding angle for demolding. And by adjusting the position, the back surface demolding is completed first, and then the front surface demolding is completed. At the same time, the feeding and discharging tension of the flexible film is controllable, which ensures that the flexible film does not deform during operation. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a side view of the overall structure of the flexible film imprinting device in an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of the overall structure of the flexible film imprinting device in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the feeding mechanism and the first adhesive application component of the flexible film imprinting device in an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the feeding mechanism of the flexible film imprinting device in an embodiment of the present invention;

[0036] Figure 5 This is a schematic diagram of the first imprinting component of the flexible film imprinting apparatus in an embodiment of the present invention;

[0037] Figure 6 This is a schematic diagram of the second imprinting component of the flexible film imprinting apparatus in an embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of the curing mechanism of the flexible film imprinting device in an embodiment of the present invention;

[0039] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0040] 1. Feeding mechanism; 2. Dispensing mechanism; 3. Imprinting mechanism; 4. Unloading mechanism; 5. Curing mechanism;

[0041] 101. Unwinding component; 102. First correction component;

[0042] 201, First glued part; 202, Second glued part;

[0043] 301, first stamping assembly; 302, second stamping assembly; 3011, first driving piece; 3012, first stamping piece; 3013, driving piece; 3014, driven piece; 3015, control assembly; 3016, first detecting piece; 30121, positioning hole; 3021, second stamping piece; 3022, second driving piece; 3023, adjusting platform; 3024, limiting assembly; 3025, supporting assembly; 30241, limiting piece; 30242, moving assembly; 30251, first supporting piece; 30252, second supporting piece; 30253, third supporting piece;

[0044] 401, winding piece; 402, third driving piece; 403, second deviation rectifying piece;

[0045] 501, mounting piece; 502, solidifying piece; 503, observing piece;

[0046] a, first direction; b, second direction; c, third direction. DETAILED DESCRIPTION

[0047] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0048] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0049] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] In the present application, unless otherwise clearly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or it only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or it only means that the horizontal height of the first feature is less than that of the second feature.

[0052] Embodiments:

[0053] Please refer to Figures 1-7 As Figure 1 shown, the flexible film embossing device in the preferred embodiment of the present application includes its upper feeding mechanism 1, glue dispensing mechanism 2, embossing mechanism 3 and lower feeding mechanism 4 arranged in sequence along the production direction. The flexible film to be embossed will pass through the upper feeding mechanism 1, the glue dispensing mechanism 2, the embossing mechanism 3 and the lower feeding mechanism 4 in sequence to complete the overall embossing process. Among them, the preferred embodiment is also provided with an upper computer, and the upper computer is electrically connected with each component to control the overall operation process of the device.

[0054] Specifically, as Figure 3 and Figure 4As shown, in a preferred embodiment, the feeding mechanism 1 includes an unwinding member 101, through which the flexible film is unwound. In a specific implementation, the unwinding member 101 is a hand-operated expansion shaft, facilitating the storage and unwinding of the flexible film. Similarly, the unloading mechanism 4 includes a winding member 401 and a third driving member 402. The third driving member 402 drives the winding member 401 to rotate, and the flexible film is wound up through the winding member 401. In a specific implementation, the winding member 401 is a hand-operated expansion shaft, facilitating the storage and unwinding of the flexible film. It can be understood that one end of the flexible film is connected to the unwinding member 101, and the other end is connected to the winding member 401. When the third driving member 402 drives the winding member 401 to rotate, the flexible film connected to the winding member 401 also moves, thereby driving the unwinding member 101 at the other end of the flexible film to rotate, thus achieving unwinding. The third drive unit 402 can be a motor to drive the winding unit 401. The host computer is electrically connected to the third drive unit 402 to realize the host computer's control of the third drive unit 402. It can adjust the driving force of the third drive unit 402 according to the actual situation, thereby controlling the rotation speed of the winding unit 401 and thus controlling the moving speed of the flexible film.

[0055] Furthermore, such as Figure 3 As shown, in a preferred embodiment, the feeding mechanism 1 further includes a first correction element 102 and a second detection element. The first correction element 102 is disposed between the unwinding element 101 and the dispensing mechanism 2, and the flexible film passes through the first correction element 102. The second detection element is electrically connected to the first correction element 102. The second detection element can detect the position of the flexible film in real time and feed it back to the first correction element 102, which then performs real-time correction. In specific implementation, the first correction element 102 can be a correction device, and the second detection element can be an edge detection sensor, which can detect the current position of the flexible film in real time and feed it back to the correction device for real-time correction. The operator can preset a program in the first correction element 102 in advance, so that the flexible film passes through the preset position during the process, preventing the material from exhibiting a serpentine phenomenon or uneven edges when entering the next process.

[0056] Optionally, a steering roller may be provided between the first correction component 102 and the first adhesive application component 201, depending on the actual situation, so that the flexible film can perform subsequent work better.

[0057] In addition, in the preferred embodiment, the feeding mechanism 1 further includes a first control element and a third detection element. The third detection element and the first control element are electrically connected to a host computer. The first control element is connected to the unwinding element 101. The third detection element detects the state of the flexible film and feeds it back to the host computer. The host computer enables the first control element to control the tension of the unwinding element 101. In specific implementation, the third detection element can be a sensor to monitor the number of rotations of the unwinding element 101. The first control element can be a magnetic powder clutch, which works in conjunction with the unwinding element 101, which uses a hand-expanding shaft, to provide unwinding tension control. By setting the roll diameter, film thickness, magnetic powder force, and combining it with the number of rotations of the unwinding element 101 detected by the third detection element, PID control is performed to maintain and ensure that the tension of the flexible film remains constant during continuous operation, avoiding changes in the shape of the flexible film due to tension variations, and preventing subsequent printing errors.

[0058] Similarly, such as Figure 4 As shown, in the preferred embodiment, the feeding mechanism 4 further includes a second correction element 403 and a fourth detection element. The second correction element 403 is disposed between the imprinting mechanism 3 and the winding element 401, and the flexible film passes through the second correction element 403. The fourth detection element is electrically connected to the second correction element 403. The fourth detection element can detect the position of the flexible film in real time and feed it back to the second correction element 403, which then performs real-time correction. In specific implementation, the second correction element 403 can be a correction device, and the second detection element can be an edge detection sensor, which can detect the current position of the flexible film in real time and feed it back to the correction device for real-time correction. The operator can preset a program in the second correction element 403 in advance so that the flexible film passes through the preset position during the process, preventing the material from exhibiting a serpentine phenomenon or uneven edges during winding.

[0059] Optionally, a steering roller may be provided between the second correction component 403 and the imprinting mechanism 3, depending on the actual situation, so that the flexible film can perform subsequent work better.

[0060] Furthermore, in the preferred embodiment, the feeding mechanism 4 also includes a second control element and a fifth detection element. The fifth detection element and the second control element are electrically connected to a host computer. The second control element is connected to the winding element 401. The fifth detection element detects the state of the flexible film and feeds it back to the host computer, which enables the second control element to control the tension of the winding element 401. In specific implementation, the fifth detection element can be a sensor to monitor the number of rotations of the winding element 401, and the second control element can be a magnetic powder clutch. It works in conjunction with the winding element 401, which uses a hand-expanding shaft, to provide tension control during winding. By setting the roll diameter, film thickness, magnetic powder force, and combining it with the number of rotations of the winding element 401 detected by the fifth detection element, PID control is performed to maintain and ensure that the tension of the flexible film remains constant during continuous operation, avoiding changes in the shape of the flexible film due to tension variations and changes in the imprinted pattern during winding.

[0061] Further, as shown in Figure 5 and Figure 6 In the preferred embodiment, the stamping mechanism 3 comprises a first stamping assembly 301 and a second stamping assembly 302. The first stamping assembly 301 comprises a first driving member 3011 and a first stamping member 3012. The first driving member 3011 drives the first stamping member 3012 to move. The first stamping member 3012 is provided with a first pattern. The second stamping assembly 302 comprises a second stamping member 3021 and a second driving member 3022. The second driving member 3022 drives the second stamping member 3021 to rotate. The second stamping member 3021 is arranged corresponding to the first stamping member 3012. The second stamping member 3021 is provided with a second pattern. The flexible film passes between the first stamping member 3012 and the second stamping member 3021. Thus, when the first stamping member 3012 and the second stamping member 3021 work simultaneously, double-sided stamping of the flexible film can be realized.

[0062] In the preferred embodiment, the first driving member 3011 and the second driving member 3022 are electrically connected with the upper computer. The operator can set in advance in the upper computer so that the driving of the first driving member 3011 and the second driving member 3022 is synchronized and stable. It can be understood that the first pattern printed on the first stamping member 3012 is the back pattern of the flexible film that needs to be stamped, that is, the first stamping member 3012 can realize the back master plate function. Similarly, the second pattern on the second stamping member 3021 can be the front pattern of the flexible film that needs to be stamped, and the second stamping member 3021 can realize the front master plate function. Marking points are arranged on the first stamping member 3012 and the second stamping member 3021 so as to facilitate the control of the synchronization of the first stamping member 3012 and the second stamping member 3021 during operation.

[0063] In detail, as shown in Figure 2 and Figure 3 In the preferred embodiment, the dispensing mechanism 2 comprises a first dispensing member 201 and a second dispensing member 202. The first dispensing member 201 is arranged between the feeding mechanism 1 and the stamping mechanism 3. The first dispensing member 201 can drop glue droplets to the side of the flexible film facing the first dispensing member 201. The second dispensing member 202 is arranged between the first stamping member 3012 and the flexible film. The second dispensing member 202 can drop glue droplets to the side of the first stamping member 3012 facing the second dispensing member 202.

[0064] Understandably, since both sides of the flexible film need to be imprinted, both sides also need to be coated with UV adhesive to facilitate subsequent imprinting and curing. The first dispensing component 201 and the second dispensing component 202 can be electrically connected to a host computer. The host computer controls the first and second dispensing components 201 and 202 to automatically dispense adhesive according to actual conditions. The UV adhesive dispensed by the first dispensing component 201 is applied to the side of the flexible film facing it, i.e., the front side of the flexible film. The UV adhesive dispensed by the second dispensing component 202 is applied to the surface of the first imprinting component 3012. As the flexible film passes by, the adhesive can be transferred to the back side of the flexible film for subsequent imprinting. Optionally, the dispensing mechanism 2 can also be equipped with a doctor blade and an anilox roller for the first and second dispensing components 201 and 202 respectively. After the first and second dispensing components 201 and 202 dispense UV adhesive onto the surface of the flexible film and the surface of the first imprinting component 3012, the doctor blade and an anilox roller are used to evenly spread the UV adhesive.

[0065] In addition, such as Figure 7 As shown, in a preferred embodiment, the flexible film imprinting device further includes a curing mechanism 5. The curing mechanism 5 includes a mounting component 501, a curing component 502, and an observation component 503. The curing component 502 and the observation component 503 are mounted on the mounting component 501 and are located within the second imprinting component 3021. The curing component 502 can cure the adhesive on the flexible film. The observation component 503 is electrically connected to a host computer and can detect the real-time position of the first imprinting component 3012 and the second imprinting component 3021 and transmit the data to the host computer.

[0066] In specific implementation, the mounting component 501 can be a mounting bracket with a certain height, allowing it to pass through the middle of the second imprinting component 3021 and place the curing component 502 and the observation component 503 within it. The curing component 502 can be a UV lamp, whose emitted UV light passes through the second imprinting component 3021 and the transparent flexible film to simultaneously cure the micro-patterns imprinted on the UV adhesive on both sides of the flexible film. The observation component 503 can be a vision camera, with two cameras configured, using a 45-degree angle reflector to achieve light path deflection, enabling real-time position display, and simultaneously detecting the marking points in the second imprinting component 3021 and the marking points on the pattern of the first imprinting component 3012, providing real-time feedback on the current positional deviation between the two marking points. The observation component 503 can effectively observe and photograph the positional deviation between the marking points on the first imprinting component 3012 and the second imprinting component 3021, and transmit this data to the host computer, which then controls the first imprinting component 3012 and the second imprinting component 3021 to ensure their synchronized operation.

[0067] More specifically, such as Figure 5As shown, the first stamping assembly 301 in the preferred embodiment further comprises a driving member 3013 and a driven member 3014, the first stamping member 3012 is connected to the driving member 3013 and the driven member 3014 at both ends respectively, the first driving member 3011 drives the driving member 3013 to rotate, the driving member 3013 drives the first stamping member 3012 to move, and the first stamping member 3012 drives the driven member 3014 to rotate.

[0068] In specific implementation, the first stamping member 3012 can be selected as a steel belt, the first pattern can be attached to the steel belt, and the reciprocating movement of the steel belt during operation can realize the cyclic reciprocating movement of the pattern. The first driving member 3011 can be selected as a right-angle speed reducer and a servo motor, the driving member 3013 is a driving wheel, and the driven member 3014 is a driven wheel. The right-angle speed reducer and the servo motor provide power for the driving wheel, thereby driving the steel belt to run, and further driving the driven wheel connected to the other end of the steel belt to rotate.

[0069] In the preferred embodiment, the driven member 3014 is connected to a control assembly 3015, and the control assembly 3015 is electrically connected to the upper computer. In specific implementation, the control assembly 3015 can be provided with two control assemblies 3015, which are located on both sides of the end provided with the driven member 3014, and can adjust the left and right sides of the driven member 3014. The control assembly 3015 can adopt a servo motor cooperating with a screw module, and adopts a torque mode during operation to ensure that the forces on both sides are uniform, thereby controlling the error of the steel belt.

[0070] Preferably, the driving member 3013 and the driven member 3014 are provided with positioning members in the preferred embodiment, and the first stamping member 3012 is provided with positioning holes 30121 corresponding to the positioning members. The positioning members can pass through the positioning holes 30121 and position the first stamping member 3012. In specific implementation, the positioning member can be selected as a positioning pin, which can be engaged with the positioning hole 30121. The matching between the two is equivalent to the engagement between gears, which can control the running accuracy of the first stamping member 3012 and eliminate the slipping between the steel belt and the wheel.

[0071] Since the first stamping member 3012 adopts a steel belt, one side of the steel belt as a cycle is relatively long, which is easy to collapse downward due to gravity. One or more supporting rollers can be placed below the downward collapsing steel belt to support the steel belt, so as to ensure better and more reliable stamping.

[0072] In addition, the driving member 3013 and the driven member 3014 are both connected to the first detection member 3016 in the preferred embodiment, the first detection member 3016 is electrically connected to the upper computer, and the first detection member 3016 can detect the running position of the first stamping member 3012 and transmit data to the upper computer. It can be understood that the first detection member 3016 can be selected as an external encoder, which is connected to the driving member 3013 and the driven member 3014 through friction connection, can monitor the running position of the steel belt in real time and feedback to the upper computer, and then controls the running of the first stamping member 3012 through the upper computer.

[0073] More in detail, such as Figure 6 As shown, in a preferred embodiment, the second imprinting assembly 302 further includes an adjustment platform 3023. The second imprinting element 3021 is connected to the adjustment platform 3023. The adjustment platform 3023 is connected to a fourth driving element and a fifth driving element. The fourth and fifth driving elements are electrically connected to a host computer. The fourth driving element drives the adjustment platform 3023 to move along a first direction a, and the fifth driving element drives the adjustment platform 3023 to move along a second direction b. The first direction a is parallel to the production direction, the second direction b is perpendicular to the first direction a, and the second direction b is parallel to the plane containing the adjustment platform 3023.

[0074] Understandably, a base can also be provided to place the fourth and fifth driving components on it, facilitating their operation. The base can be a UVW platform, which can interface with a vision CCD correction system to achieve high-precision correction. In specific implementations, both the fourth and fifth driving components can be motors. There can be two fourth driving components and one fifth driving component, or one fourth driving component and two fifth driving components. This allows the adjustment platform 3023 to rotate around any point, using the plane containing the first direction a and the second direction b as a reference plane. Simultaneously, the observation element 503 in the curing mechanism 5 can transmit the detected results to the host computer. The host computer can then control the fourth and fifth driving components based on these results to adjust the adjustment platform 3023, thereby ensuring high precision and reliability in the imprinting process.

[0075] Since the second imprinting component 3021 imprints the upper surface of the flexible film and also needs to imprint the lower surface of the flexible film, mounting holes can be made in the adjustment platform 3023 to allow the first imprinting component 301 to pass through. The first imprinting component 3012 is correspondingly positioned directly below the second imprinting component 3021. When the second imprinting component 302 needs to be adjusted, the adjustment platform 3023 can be adjusted to move around the first imprinting component 301, thus making the structure more compact and improving the double-sided imprinting effect.

[0076] In the implementation, the second driving member 3022 provides power for the second embossing member 3021, and position ring electronic cam control can be adopted. Since the second driving member 3022 and part of components in the first embossing assembly 301 are electrically connected with the upper computer, the upper computer can dynamically modify the electronic gear ratio of the second driving member 3022 according to the signal of the running position of the first embossing member 3012, and real-time position compensation is performed to ensure that the first embossing member 3012 and the second embossing member 3021 are synchronized, and the patterns embossed on the two sides of the flexible film correspond to each other. The second embossing member 3021 can be a quartz roller, which is a transparent roller, and a second pattern is also a transparent master on the second embossing member 3021. During operation, the second pattern on the second embossing member 3021 can be realized by the reciprocating operation of the quartz roller.

[0077] Preferably, the second embossing assembly 302 in the preferred embodiment further comprises a limiting assembly 3024, the limiting assembly 3024 comprises a limiting member 30241 and a moving assembly 30242, the limiting member 30241 abuts against the second embossing member 3021, the moving assembly 30242 is electrically connected with the upper computer, the moving assembly 30242 is connected with the limiting member 30241, and the upper computer can control the moving assembly 30242 to drive the limiting member 30241 to move along a third direction c. The third direction c is perpendicular to the plane in which the first direction a and the second direction b are located.

[0078] It can be understood that the moving assembly 30242 can comprise a pneumatic cylinder, a wire rail and a connecting member. The moving assembly 30242 can adopt the pneumatic cylinder to drive the connecting member to move along the wire rail, and the limiting member 30241 is connected with the connecting member, so that the pneumatic cylinder drives the connecting member to drive the limiting member 30241 to move. The limiting member 30241 can be a gripper, and two grippers can be arranged on the top of the second embossing member 3021 on both sides and both ends, respectively, to control the position of the second embossing member 3021 in the third direction c, i.e., the height direction. The radial force of the bearing on the limiting member 30241 presses the second embossing member 3021 downward, and the limiting member 30241 rotates synchronously with the second embossing member 3021. The axial force of the bearing on the limiting member 30241 controls the side end of the expansion sleeve of the second embossing member 3021, and limits the forward and backward movement of the second embossing member 3021. Optionally, a plurality of limiting members 30241 and moving assemblies 30242 can also be arranged on the bottom of the second embossing member 3021, which can cooperate to adjust the position of the second embossing member 3021 and further limit the position of the second embossing member 3021.

[0079] More preferably, the second embossing assembly 302 in the preferred embodiment further comprises a supporting assembly 3025, the supporting assembly 3025 is connected to the adjusting platform 3023, and the supporting assembly 3025 comprises a first supporting member 30251, a second supporting member 30252 and a third supporting member 30253. The first supporting member 30251 supports the flexible film, the second supporting member 30252 supports the first embossing member 3012, and the third supporting member 30253 supports the second embossing member 3021.

[0080] It can be understood that the first support 30251, the second support 30252 and the third support 30253 can be selected as carrier rollers, and each can be provided with two carrier rollers located at two sides of the component to be supported. Since the first impression member 3012 needs to be arranged below the second impression member 3021, the first impression assembly 301 can be installed below the second impression member 3021 through the mounting hole of the adjusting platform 3023, and thus the first impression member 3012 is located between the second impression member 3021 and the adjusting platform 3023, and the flexible film needs to pass between the first impression member 3012 and the second impression member 3021. Therefore, the first support 30251 is arranged to be located below the flexible film during operation, capable of supporting the flexible film, the second support 30252 is arranged to be located below the first impression member 3012 during operation, capable of supporting the first impression member 3012, and the third support 30253 is capable of supporting the second impression member 3021. At the same time, the first support 30251 can also control the running direction of the flexible film, ensuring that the movement direction of the flexible film is along the first support 30251, realizing the feeding and pressing of the flexible film and the demolding of the flexible film, the second support 30252 can control the running direction of the first impression member 3012, so that the first impression member 3012 runs along the direction of the second support 30252, realizing the high-precision running of the first impression member 3012. The third support 30253 can also control the position of the second impression member 3021, providing support for the second impression member 3021.

[0081] The flexible film impression device in the application can realize synchronous impression of both sides, and the front side and the back side are synchronously run to print the front side pattern and the back side pattern on the intermediate film. The front side pattern and the back side pattern are printed on the intermediate film by controlling the offset of the front side master plate, i.e. the second impression member, to control the register accuracy. At the same time, the observation member is arranged to monitor the angle deviation value of the first impression member and the second impression member, and the corresponding deviation value is transmitted to the adjusting platform, and the adjusting platform compensates the deviation value. In addition, the first support limits the feeding path of the flexible film, providing a demolding angle for demolding. And the position is adjusted to realize the demolding process of the back side first and then the front side. At the same time, the feeding and discharging tension of the flexible film is controllable, ensuring that the flexible film is not deformed during operation.

[0082] Those skilled in the art will readily understand that the above description is only the preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flexible thin film imprinting apparatus, characterized by, The feeding mechanism, the glue dispensing mechanism, the stamping mechanism and the discharging mechanism are sequentially arranged along a production direction; The feeding mechanism comprises a unwinding part through which the flexible film is unwound; The stamping mechanism comprises a first stamping assembly and a second stamping assembly, the first stamping assembly comprises a first driving part and a first stamping part, the first driving part drives the first stamping part to move, the first stamping part is provided with a first pattern; the second stamping assembly comprises a second stamping part and a second driving part, the second driving part drives the second stamping part to rotate, the second stamping part is arranged corresponding to the first stamping part, the second stamping part is provided with a second pattern, and the flexible film passes between the first stamping part and the second stamping part; The first driving part and the second driving part are electrically connected with the upper computer; The glue dispensing mechanism comprises a first glue dispensing part and a second glue dispensing part, the first glue dispensing part is arranged between the feeding mechanism and the stamping mechanism, the first glue dispensing part can drop glue drops to one side of the flexible film facing the first glue dispensing part; the second glue dispensing part is arranged between the first stamping part and the flexible film, and the second glue dispensing part can drop glue drops to one side of the first stamping part facing the second glue dispensing part; The curing mechanism comprises a mounting part, a curing part and an observation part, the curing part and the observation part are mounted on the mounting part, and the curing part and the observation part are located in the second stamping part; the curing part can cure the glue on the flexible film; The observation part is electrically connected with the upper computer, and the observation part can detect the real-time position of the first stamping part and the second stamping part and transmit data to the upper computer; The discharging mechanism comprises a winding part and a third driving part, the third driving part drives the winding part to rotate, and the flexible film is wound through the winding part.

2. The flexible film embossing apparatus of claim 1, wherein, The first stamping assembly further comprises a driving part and a driven part, the first stamping part is connected with the driving part and the driven part at both ends respectively, the first driving part drives the driving part to rotate, the driving part drives the first stamping part to move, and the first stamping part drives the driven part to rotate. The driven part is connected with a control assembly, and the control assembly is electrically connected with the upper computer.

3. The flexible film embossing apparatus of claim 2, wherein, The driving part and the driven part are provided with positioning parts, the first stamping part is provided with positioning holes corresponding to the positioning parts, the positioning parts can pass through the positioning holes and position the first stamping part; The driving part and the driven part are both connected with a first detection part, the first detection part is electrically connected with the upper computer, the first detection part can detect the running position of the first stamping part and transmit data to the upper computer.

4. The flexible film embossing apparatus of claim 1, wherein, The second stamping assembly further comprises an adjusting platform, the second stamping part is connected with the adjusting platform, the adjusting platform is connected with a fourth driving part and a fifth driving part, the fourth driving part and the fifth driving part are electrically connected with the upper computer, the fourth driving part drives the adjusting platform to move along a first direction, and the fifth driving part drives the adjusting platform to move along a second direction; The first direction is parallel to the production direction, the second direction is perpendicular to the first direction, and the second direction is parallel to the plane on which the adjusting platform is located.

5. The flexible film embossing apparatus of claim 4, wherein, The second stamping assembly further comprises a limiting assembly, the limiting assembly comprises a limiting piece and a moving assembly, the limiting piece abuts against the second stamping piece, the moving assembly is electrically connected with the upper computer, the moving assembly is connected with the limiting piece, and the upper computer can control the moving assembly to drive the limiting piece to move along a third direction; the third direction is perpendicular to the plane on which the first direction and the second direction are located.

6. The flexible film embossing apparatus of claim 4, wherein, The second stamping assembly further comprises a supporting assembly, the supporting assembly is connected to the adjusting platform, the supporting assembly comprises a first supporting piece, a second supporting piece and a third supporting piece, the first supporting piece supports the flexible film, the second supporting piece supports the first stamping piece, and the third supporting piece supports the second stamping piece.

7. The flexible film embossing apparatus of any one of claims 1-6, wherein, The feeding mechanism further comprises a first deviation correcting piece and a second detection piece, the first deviation correcting piece is arranged between the unwinding piece and the glue dispensing mechanism, and the flexible film passes through the first deviation correcting piece; the second detection piece is electrically connected with the first deviation correcting piece, and the second detection piece can detect the position of the flexible film in real time and feed back to the first deviation correcting piece.

8. The flexible film embossing apparatus of any one of claims 1-6, wherein, The feeding mechanism further comprises a first control piece and a third detection piece, the third detection piece and the first control piece are electrically connected with the upper computer, the first control piece is connected with the unwinding piece, the third detection piece detects the state of the flexible film and feeds it back to the upper computer, and the upper computer can enable the first control piece to control the tension of the unwinding piece.

9. The flexible film embossing apparatus of any one of claims 1-6, wherein, The discharging mechanism further comprises a second deviation correcting piece and a fourth detection piece, the second deviation correcting piece is arranged between the stamping mechanism and the winding piece, and the flexible film passes through the second deviation correcting piece; the fourth detection piece is electrically connected with the second deviation correcting piece, and the fourth detection piece can detect the position of the flexible film in real time and feed back to the second deviation correcting piece.

10. The flexible film embossing apparatus of any one of claims 1-6, wherein, The discharging mechanism further comprises a second control piece and a fifth detection piece, the fifth detection piece and the second control piece are electrically connected with the upper computer, the second control piece is connected with the winding piece, the fifth detection piece detects the state of the flexible film and feeds it back to the upper computer, and the upper computer can enable the second control piece to control the tension of the winding piece. The discharging mechanism further comprises a second control piece and a fifth detection piece, the fifth detection piece and the second control piece are electrically connected with the upper computer, the second control piece is connected with the winding piece, the fifth detection piece detects the state of the flexible film and feeds it back to the upper computer, and the upper computer can enable the second control piece to control the tension of the winding piece.

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