An automatic high-precision screen printing machine

Abstract

The utility model discloses an automatic high-precision silk screen printing machine, include: material rotating mechanism and the arrangement of material feeding mechanism, feed detection mechanism, silk screen printing mechanism and the material discharging detection mechanism around material rotating mechanism, place the lens piece product of silk screen printing processing to be waiting to material rotating mechanism through material feeding mechanism, drive the product to enter the processing position of feed detection mechanism, silk screen printing mechanism and material discharging detection mechanism in proper order through material rotating mechanism, finally rotate to material feeding mechanism and carry out the unloading work, through setting up material rotating mechanism, and will material feeding mechanism, feed detection mechanism, silk screen printing mechanism, material discharging detection mechanism arrangement around material rotating mechanism, form the integrated annular processing flow. When processing, material rotating mechanism can drive the lens piece product to enter each processing station accurately in proper order, need not manual or multiple sets of conveying equipment to carry on the cross-station transfer, and the linking time between processes is greatly shortened, simultaneously, and each mechanism is coordinated and links, realizes the continuous operation of lens piece silk screen printing processing.

Description

Technical Field

[0001] This utility model belongs to the field of automation equipment technology and relates to an automated high-precision screen printing machine. Background Technology

[0002] In the field of optical lens manufacturing, screen printing of lens elements is a crucial process for ensuring the optical performance and appearance quality of products. It requires the precise printing of markings, filter layers, or light-blocking patterns on specific areas of the lens element, demanding extremely high processing precision, efficiency, and consistency. Currently, the industry typically employs a decentralized process layout for screen printing of lens elements: first, the lens elements to be processed are manually or using a single loading and unloading device to be transferred to a positioning and inspection station. After product position calibration, the lens elements are then manually or via an independent conveyor to the screen printing equipment for printing. After screen printing, the elements are again transferred to a separate inspection station to check for defects such as the clarity of the screen-printed pattern, positional deviations, and missing prints. Finally, qualified products are collected manually, and unqualified products are sorted.

[0003] In this traditional processing mode, the dispersed arrangement of multiple workstations means that the transfer of lens pieces between processes relies on manual labor or multiple independent conveying systems. This not only increases the cost of manual operation, but also makes it easy for the positioning accuracy of the lens pieces to decrease due to manual intervention or equipment connection errors during the transfer process. This can lead to quality problems such as screen printing pattern misalignment and missing printing, resulting in a high product defect rate. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] An automated high-precision screen printing machine includes: a processing machine table, on which a set of material transfer mechanisms are provided, as well as a loading and unloading mechanism, a feeding detection mechanism, a screen printing mechanism, and a discharging detection mechanism arranged around the material transfer mechanisms;

[0006] The lens film to be screen printed is placed into the transfer mechanism by the loading and unloading mechanism. The transfer mechanism then drives the product into the processing positions of the feeding inspection mechanism, the screen printing mechanism, and the unloading inspection mechanism in sequence. Finally, it returns to the loading and unloading mechanism for unloading.

[0007] As a further embodiment of this utility model: the material transfer mechanism includes: a material feeding turntable and a material transfer rotating module for driving the material feeding turntable to rotate, wherein the material feeding turntable is provided with a material feeding platform distributed in a multiple ring array.

[0008] As a further embodiment of this utility model: the loading and unloading mechanism includes: a loading unit for carrying products and a picking unit for picking up and placing products;

[0009] The material handling unit includes: a set of material handling transverse moving modules extending from the material transfer mechanism to the material loading unit; the material handling transverse moving modules are equipped with a material suction and placement device for realizing product material handling.

[0010] The material loading unit includes: a material loading frame, which is perpendicular to the material picking and traversing module of the material picking unit; the two ends of the material loading frame are the discharge end and the collection end, respectively; and a set of material loading conveyor belts are provided at both the discharge end and the collection end; and a material transfer conveyor belt and a material transfer moving module that can drive the material transfer conveyor belt to dock with the material loading conveyor belts on both sides are provided in the middle section of the material loading frame.

[0011] The material conveyor belt is a double-sided conveyor belt, and a clip-type loading and unloading device is installed on the material conveyor belt.

[0012] The material handling and loading device includes: a loading and loading frame, on which a loading and loading forward and backward moving module is arranged parallel to the material transfer moving module, a loading and loading lifting module is installed on the loading and loading forward and backward moving module, and a loading and loading vision camera is provided;

[0013] The pick-and-place lifting module is equipped with multiple sets of pick-and-place suction heads for product suction and a pick-and-place rotary motor for driving the pick-and-place suction heads to rotate.

[0014] As a further embodiment of this utility model, both the feeding inspection mechanism and the discharging inspection mechanism are visual inspection mechanisms.

[0015] As a further embodiment of this utility model: both the loading / unloading mechanism and the feeding detection mechanism are equipped with a calibration mechanism; the calibration mechanism is located at the lower end of the unloading turntable and includes: a calibration lifting module, an XY axis displacement platform installed on the calibration lifting module, a calibration rotation module installed on the XY axis displacement platform, and a calibration air clamp installed on the calibration rotation module.

[0016] The feeding platform includes: a platform base mounted on a feeding turntable and a feeding platform placed on the platform base; the feeding platform is equipped with a clamping assembly for clamping the product;

[0017] A through calibration clearance groove is provided at the center of the feeding platform, and a calibration base extending into the calibration clearance groove is provided at the lower end of the feeding platform. A clearance groove with a corresponding structure is provided on the feeding turntable.

[0018] As a further embodiment of this utility model: the screen printing mechanism includes: a screen printing processing unit and a screen printing lifting module for realizing the lifting operation of the screen printing processing unit;

[0019] The screen printing processing unit includes: a screen printing bracket installed on the screen printing lifting module, on which a screen printing stencil and a stencil pressing module for fixing the two sides of the screen printing stencil are provided;

[0020] The screen printing bracket is also equipped with: two sets of screen printing mounting plate units and a screen printing transverse movement module for driving the screen printing mounting plate units to move laterally; the screen printing mounting plate unit includes: a screen printing lifting module and a screen printing squeegee installed on the screen printing lifting module.

[0021] The beneficial effects of this utility model are as follows: By setting up a material transfer mechanism and arranging the loading / unloading mechanism, the feeding detection mechanism, the screen printing mechanism, and the unloading detection mechanism around the material transfer mechanism, an integrated circular processing flow is formed. During processing, the material transfer mechanism can drive the lens film products into each processing station in sequence with precision, eliminating the need for manual labor or multiple sets of conveying equipment for cross-station transfer, thus significantly shortening the connection time between processes; at the same time, the coordinated operation of each mechanism realizes continuous operation of lens film screen printing processing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the material transfer mechanism of this utility model.

[0024] Figure 3 This is a schematic diagram of the loading and unloading mechanism in this utility model.

[0025] Figure 4 This is a schematic diagram of the material-carrying unit in this utility model.

[0026] Figure 5 This is a schematic diagram of the material handling unit in this utility model.

[0027] Figure 6 This is a schematic diagram of the calibration mechanism in this utility model.

[0028] Figure 7 This is a schematic diagram of the material feeding platform in this utility model.

[0029] Figure 8 This is a schematic diagram of the screen printing mechanism in this utility model. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. It should be understood that this application is not limited to the exemplary embodiments disclosed herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical connection; 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. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0034] This utility model provides a reference. Figures 1-8 In this embodiment of the utility model, an automated high-precision screen printing machine includes: a processing machine table 1, on which a set of material transfer mechanism 6 is provided, and a loading and unloading mechanism 2, a feeding detection mechanism 3, a screen printing mechanism 4 and a discharging detection mechanism 5 are arranged around the material transfer mechanism 6.

[0035] During processing, the lens film product to be screen printed is placed into the transfer mechanism 6 through the loading and unloading mechanism 2. The transfer mechanism 6 drives the product to enter the processing positions of the feeding inspection mechanism 3, the screen printing mechanism 4 and the unloading inspection mechanism 5 in sequence for product positioning before processing, screen printing processing and screen printing inspection after processing; finally, it returns to the loading and unloading mechanism 2 for unloading.

[0036] Furthermore, the material transfer mechanism 6 includes: a feeding turntable 62 and a material transfer rotating module 61 for driving the feeding turntable 62 to rotate. The feeding turntable 62 is provided with a plurality of feeding platforms 63 arranged in a ring array. During processing, the product to be processed is placed on the feeding platform 63, and the material transfer rotating module 61 drives the feeding turntable 62 to rotate, so that the product in the feeding platform 63 enters each processing mechanism for corresponding processing work.

[0037] Furthermore, the loading and unloading mechanism 2 includes: a loading unit 23 for carrying products and a picking unit 21 for picking up and placing products;

[0038] The material handling unit 21 includes: a material handling transverse transfer module 212 extending from the material transfer mechanism 6 to the material loading unit 23; the material handling transverse transfer module 212 is provided with a material suction and placement device 211 for realizing product material handling;

[0039] The material loading unit 23 includes: a material loading frame 231, which is perpendicular to the material picking and traversing module 212 of the material picking unit 21; the two ends of the material loading frame 231 are the discharge end 232 and the collection end 235, respectively; and a set of material conveyor belts 237 are provided at both the discharge end 232 and the collection end 235; the material picking and traversing module 212 of the material picking unit 21 extends to the middle section of the material loading frame 231, and a transfer conveyor belt 233 and a transfer moving module 234 that can drive the transfer conveyor belt 233 to dock with the material conveyor belts 237 on both sides are provided at the middle section of the material loading frame 231;

[0040] The material conveyor belt 237 is a double-sided conveyor belt, and a clip-type pick-and-place device 236 is provided on the material conveyor belt 237. During processing, the products are placed in the form of a material tray. The material tray carrying the products to be processed is sent into the material conveyor belt 237 of the discharge end 232 by the clip-type pick-and-place device 236. At the same time, the material transfer module 234 drives the material transfer conveyor belt 233 to dock with the material conveyor belt 237 on the same side to realize the receiving of the material tray.

[0041] Then, the material transfer module 234 drives the material tray into the processing area of ​​the material picking unit 21 (i.e., the middle section of the material carrier frame 231). The material picking unit 21 performs the picking of products from the material tray and the unloading of processed products back into the material tray. After all the products in the material tray have been processed, the material transfer module 234 drives the material tray into the material conveyor belt 237 of the collection end 235. The material tray is collected by the clip-type picking and placing device 236 on this side.

[0042] In order to realize the picking and placing processing action, the material picking and placing device 211 includes: a picking and placing frame 218, on which a picking and placing forward and backward moving module 217 is arranged in parallel with the material transfer moving module 234, a picking and placing lifting module 216 installed on the picking and placing forward and backward moving module 217, and a picking and placing vision camera 213.

[0043] The pick-and-place lifting module 216 is equipped with multiple sets of pick-and-place suction heads 215 for realizing product suction work, and a pick-and-place rotary motor 214 for driving the pick-and-place suction heads 215 to rotate.

[0044] In the product handling process, the XYZ three-axis module cooperation structure is formed by the material handling transverse module 212, the material transfer module 234 and the handling lifting module 216. The three-axis module cooperation drives the handling suction head 215 to realize the material handling of the product on the material tray. At the same time, before the material handling device 211 performs the material handling operation, the product position and placement position are visually identified by the handling vision camera 213. Then, the handling forward and backward moving module 217 and the handling rotary motor 214 are used to compensate and correct the position and angle of the product placement to provide the overall handling processing accuracy.

[0045] Furthermore, the loading and unloading mechanism 2 also includes a defective product collection mechanism 22 arranged in parallel with the loading unit 23. The defective product collection mechanism 22 includes a receiving moving module 222 arranged in parallel with the transfer moving module 234. The receiving moving module 222 is equipped with a defective product receiving tray 221. During the processing, products that are determined to be defective by the discharge detection mechanism 5 will be sent to the defective product collection mechanism 22 for collection through the picking unit 21.

[0046] Furthermore, both the feeding inspection mechanism 3 and the discharging inspection mechanism 5 are visual inspection mechanisms; the feeding inspection mechanism 3 is used to detect the placement position of the product on the feeding platform 63 and to perform positioning work before processing; while the discharging inspection mechanism 5 is used to detect the weight of the product after processing.

[0047] Furthermore, in order to improve the overall processing accuracy, both the loading / unloading mechanism 2 and the feeding detection mechanism 3 are equipped with a calibration mechanism 31. The calibration mechanism 31 is located at the lower end of the unloading turntable 62 and includes: a calibration lifting module 311, an XY axis displacement platform 314 mounted on the calibration lifting module 311, a calibration rotation module 313 mounted on the XY axis displacement platform 314, and a calibration air clamp 312 mounted on the calibration rotation module 313.

[0048] To adapt to the calibration mechanism 31, the feeding platform 63 includes: a platform base 633 mounted on the feeding turntable 62 and a feeding platform 631 placed on the platform base 633; ​​the feeding platform 631 is provided with a clamping assembly 637 for product clamping, the clamping assembly 637 includes: a feeding seat 372, a product feeding cavity 374 formed in the middle of the feeding seat 372, a fixed limiting block 373 provided on one side of the product feeding cavity 374, a movable limiting block 374 provided on the other side, and a limiting moving module 371 that drives the movable limiting block 374 to move towards the fixed limiting block 373; the product to be processed is placed in the product feeding cavity 374, and then the fixed limiting block 373 is moved by the limiting moving module 371, cooperating with the fixed limiting block 373 to achieve the product clamping operation;

[0049] The center of the unloading platform 63 is provided with a through calibration clearance groove 636, and the lower end of the unloading platform 631 is provided with a calibration base 632 extending into the calibration clearance groove 636. The unloading turntable 62 is provided with a clearance groove of the corresponding structure. During processing, the calibration mechanism 31 works with the processing vision system to drive the calibration air clamp 312 to the top through the calibration lifting module 311 to clamp the calibration base 632. Then, the XY axis displacement platform 314 and the calibration rotation module 313 are used to perform calibration work on the XYR three-axis position of the unloading platform 631.

[0050] During processing, the two sets of calibration mechanisms 31 can achieve the effect of two sets of processing benchmarks during the processing process; adapting to the different precision requirements and operating characteristics of screen printing and material handling, it not only meets the extremely high positional accuracy of screen printing to ensure accurate pattern alignment, but also ensures stable clamping and positional adaptation requirements for material handling, effectively improving overall processing efficiency and precision stability.

[0051] To ensure sufficient stability of the feeding platform 631 during screen printing, the upper end of the feeding platform 63 is provided with a ring-shaped vacuum suction groove 635; and the lower end of the feeding platform 63 is provided with a vacuum interface 634 connected to the vacuum suction groove 635. During use, the feeding platform 631 is fixed on the feeding platform 63 by connecting a vacuum device through the vacuum interface 634 to draw a vacuum.

[0052] Furthermore, the screen printing mechanism 4 includes: a screen printing processing unit 40 and a screen printing lifting module 48 for realizing the lifting operation of the screen printing processing unit 40;

[0053] The screen printing processing unit 40 includes: a screen printing bracket 47 installed on the screen printing lifting module 48, on which a screen printing stencil 41 and a stencil pressing module 43 for fixing the two sides of the screen printing stencil 41 are provided.

[0054] The screen printing bracket 47 is also provided with: two sets of screen printing hanging plate units 44 and a screen printing transverse moving module 45 for driving the screen printing hanging plate units 44 to move laterally; the screen printing hanging plate unit 44 includes: a screen printing lifting module 46 and a screen printing squeegee 42 installed on the screen printing lifting module 46.

[0055] During processing, the material feeding platform 63 to be screen printed is located at the lower end of the screen printing stencil 41. The screen printing stencil 41 is lowered and placed against the product by the screen lifting module 43. Screen printing ink is poured onto the screen printing stencil 41. The printing lifting module 46 of the screen printing hanging unit 44 drives the screen printing squeegee 42 to descend and adhere to the upper surface of the screen printing stencil 41. Subsequently, the screen printing transverse module 45 drives the screen printing hanging unit 44 to move laterally. The screen printing squeegee 42 applies pressure to the screen printing stencil 41 during the movement, and the ink on the screen printing stencil 41 is scraped through the mesh to the surface of the product below to complete the pattern transfer.

[0056] Then, the screen printing horizontal movement module 45 drives the screen printing hanging plate unit 44 to move horizontally to reset and perform secondary printing; finally, the screen printing lifting module 46 drives the screen printing squeegee 42 to rise and detach from the screen printing screen 41, while the screen lifting module 43 drives the screen printing screen 41 to rise and reset, completing the screen printing process.

[0057] During the processing, the two sets of screen printing plate units 44 are processed in an alternating manner.

[0058] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automated high-precision screen printing machine, characterized in that, include: The processing machine is equipped with a material transfer mechanism and a loading / unloading mechanism, a feeding detection mechanism, a screen printing mechanism, and a discharging detection mechanism arranged around the material transfer mechanism. The lens film to be screen printed is placed into the transfer mechanism by the loading and unloading mechanism. The transfer mechanism then drives the product into the processing positions of the feeding inspection mechanism, the screen printing mechanism, and the unloading inspection mechanism in sequence. Finally, it returns to the loading and unloading mechanism for unloading.

2. The automated high-precision screen printing machine according to claim 1, characterized in that, The material transfer mechanism includes a material feeding turntable and a material transfer rotating module for driving the material feeding turntable to rotate. The material feeding turntable is provided with a multiple array of material feeding platforms distributed in a ring.

3. The automated high-precision screen printing machine according to claim 1, characterized in that, The loading and unloading mechanism includes: a loading unit for carrying products and a picking unit for picking up and placing products; The material handling unit includes: a set of material handling transverse moving modules extending from the material transfer mechanism to the material loading unit; the material handling transverse moving modules are equipped with a material suction and placement device for realizing product material handling. The material loading unit includes: a material loading frame, which is perpendicular to the material picking and traversing module of the material picking unit; the two ends of the material loading frame are the discharge end and the collection end, respectively; and a set of material loading conveyor belts are provided at both the discharge end and the collection end; and a material transfer conveyor belt and a material transfer moving module that can drive the material transfer conveyor belt to dock with the material loading conveyor belts on both sides are provided in the middle section of the material loading frame. The material conveyor belt is a double-sided conveyor belt, and a clip-type loading and unloading device is installed on the material conveyor belt. The material handling and loading device includes: a loading and loading frame, on which a loading and loading forward and backward moving module is arranged parallel to the material transfer moving module, a loading and loading lifting module is installed on the loading and loading forward and backward moving module, and a loading and loading vision camera is provided; The pick-and-place lifting module is equipped with multiple sets of pick-and-place suction heads for product suction and a pick-and-place rotary motor for driving the pick-and-place suction heads to rotate.

4. The automated high-precision screen printing machine according to claim 1, characterized in that, Both the infeed inspection agency and the outfeed inspection agency are visual inspection agencies.

5. The automated high-precision screen printing machine according to claim 1, characterized in that, Both the loading / unloading mechanism and the feeding detection mechanism are equipped with calibration mechanisms. The calibration mechanism is located at the lower end of the feeding turntable and includes: a calibration lifting module, an XY axis displacement platform installed on the calibration lifting module, a calibration rotation module installed on the XY axis displacement platform, and a calibration air clamp installed on the calibration rotation module. The feeding platform includes: a platform base mounted on a feeding turntable and a feeding platform placed on the platform base; the feeding platform is equipped with a clamping assembly for clamping the product; A through calibration clearance groove is provided at the center of the feeding platform, and a calibration base extending into the calibration clearance groove is provided at the lower end of the feeding platform. A clearance groove with a corresponding structure is provided on the feeding turntable.

6. The automated high-precision screen printing machine according to claim 1, characterized in that, The screen printing mechanism includes: a screen printing processing unit and a screen printing lifting module for realizing the lifting and lowering operation of the screen printing processing unit; The screen printing processing unit includes: a screen printing bracket installed on the screen printing lifting module, on which a screen printing stencil and a stencil pressing module for fixing the two sides of the screen printing stencil are provided; The screen printing bracket is also equipped with: two sets of screen printing mounting plate units and a screen printing transverse movement module for driving the screen printing mounting plate units to move laterally; the screen printing mounting plate unit includes: a screen printing lifting module and a screen printing squeegee installed on the screen printing lifting module.

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