Automatic milling glass mouth module for watch glass

Abstract

This invention provides an automatic milling module for watch glass, wherein a jig is provided on the feeding and conveying mechanism, and the jig reciprocates along the length of the feeding and conveying mechanism; a first multi-axis transfer mechanism is used to transfer the watch glass on the jig to a step difference detection station, a milling station, and a flipping station respectively; the step difference detection station includes a step difference detection camera with its lens facing upward; the milling station includes a milling mechanism with a milling head, the milling end of the milling head facing upward; the flipping station includes a flipping mechanism, a first feeding plate, and a second feeding plate, the second feeding plate being located at the drive end of the flipping mechanism, the second feeding plate receiving and fixing the watch glass when in a first position, and transferring the watch glass to the first feeding plate when in a second position; it can accurately detect the condition of the watch glass's glue joint and ensure the quality of the milling, realizing a process-oriented automated operation of the watch glass, improving processing efficiency, and meeting the needs of high-efficiency production.

Description

Technical Field

[0001] This invention relates to the field of watch glass processing technology, and more specifically, to an automatic milling module for watch glass. Background Technology

[0002] As a core exterior and protective component of a watch, the precision of its processing directly impacts the overall quality and user experience. During watch glass production, to achieve precise assembly between the glass and the case, a glue-filling process is typically performed. After the glue cures, excess glue marks are formed at the edges of the glass. These marks need to be milled away to ensure the smoothness of the glass edges and assembly accuracy. Currently, the milling of these glue marks on watch glasses is mostly done manually or semi-automatically. Manual methods have several significant drawbacks: First, the manual transfer, positioning, milling, and inspection processes are cumbersome, hindering continuous production and resulting in low overall processing efficiency. Second, manual operation is prone to positioning errors, leading to misalignment, over-milling, or missed milling marks, affecting the edge precision of the watch glass. Third, manual inspection is susceptible to fatigue and subjective judgment, making it difficult to accurately identify milling defects, potentially causing defective products to flow into the next process and impacting overall product quality. While semi-automation is an improvement over pure manual labor, it still requires human assistance to complete the aforementioned key processes, and the overall processing efficiency is still only slightly improved, failing to meet the needs of high-efficiency production. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an automatic milling module for watch glass, which addresses the above-mentioned deficiencies of the prior art.

[0004] The technical solution adopted by this invention to solve its technical problem is: an automatic milling module for watch glass, comprising a machine base, wherein the machine base is provided with a feeding conveying mechanism, a first multi-axis transfer mechanism, a step difference detection station, a milling station, and a flipping station; a fixture is provided on the feeding conveying mechanism, and the fixture reciprocates along the length direction of the feeding conveying mechanism; the fixture is used to carry the watch glass after it has been potted and cured, and the first multi-axis transfer mechanism is used to transfer the watch glass on the fixture to the step difference detection station, the milling station, and the flipping station respectively. The step difference detection station includes a step difference detection camera with its lens facing upwards; the milling station includes a milling mechanism with a milling head, the milling end of which faces upwards; the flipping station includes a flipping mechanism, a first feeding plate, and a second feeding plate, the second feeding plate being disposed at the drive end of the flipping mechanism to flip back and forth relative to the first feeding plate; when the second feeding plate is in the first position, it receives and fixes the watch glass, and when the second feeding plate is in the second position, it transfers the watch glass to the first feeding plate.

[0005] In some embodiments, the step difference detection station further includes a supplementary light source, which includes an annular light-emitting part with the light emission direction facing upward; the lens of the step difference detection camera is located below and spaced from the annular light-emitting part, and the lens of the step difference detection camera faces vertically upward and is directly opposite the inner ring of the annular light-emitting part.

[0006] In some embodiments, the milling station further includes a platform located above the milling mechanism; a first perforation is provided at the center of the top surface of the platform, and the milling end of the milling head is vertically upward and directly opposite the first perforation.

[0007] In some embodiments, the milling mechanism further includes a rotary drive assembly and a lifting adjustment assembly, wherein the drive end of the rotary drive assembly is fixedly connected to the spindle of the milling head, and the fixed end of the rotary drive assembly is fixedly connected to the drive end of the lifting adjustment assembly.

[0008] In some embodiments, a first receiving groove is provided at the center of the second feeding plate, and a suction nozzle is fixedly provided at the center of the inner bottom surface of the first receiving groove. The suction end of the suction nozzle faces vertically upward, and the air inlet end of the suction nozzle is connected to an external negative pressure air source through a pipeline.

[0009] In some embodiments, the height of the suction nozzle does not exceed the depth of the first receiving groove; the suction end face of the suction nozzle is provided with an annular first flexible pad around its suction port.

[0010] In some embodiments, a second receiving groove is provided at the center of the top surface of the first feeding plate, and the inner bottom surface of the second receiving groove is hollowed out and formed with an annular support portion.

[0011] In some embodiments, the top surface of the fixture is provided with a positioning groove that matches the shape of the watch glass, and the inner peripheral sidewall of the positioning groove is provided with an annular flexible limiting ring.

[0012] In some embodiments, the machine base is further provided with a second multi-axis transfer and pick-up mechanism, and the feeding conveying mechanism is located between the first multi-axis transfer and pick-up mechanism and the second multi-axis transfer and pick-up mechanism; the horizontal linear movement directions of the first multi-axis transfer and pick-up mechanism, the second multi-axis transfer and pick-up mechanism and the feeding conveying mechanism are all the same.

[0013] In some embodiments, the machine base is further provided with a finished product storage station, the finished product storage station includes a material tray, the second multi-axis material handling mechanism and the first material dispensing plate are both located close to the material tray; the material tray is provided with a plurality of third receiving slots, the plurality of third receiving slots are evenly distributed in a matrix, and each third receiving slot has a circular second flexible pad on its inner bottom surface.

[0014] The beneficial effects of this invention are as follows: Unlike existing technologies, the automatic milling module for watch glass of this invention, through the coordinated operation of the feeding and conveying mechanism and the first multi-axis transfer and picking mechanism, realizes a streamlined automated operation of watch glass from feeding, transfer, step difference detection, milling, and flipping, without manual intervention and with smooth process connections; the step difference detection camera can accurately detect the condition of the watch glass's glued edge, providing accurate basis for the milling operation; and the milling head, in conjunction with the precise transfer of the first multi-axis transfer and picking mechanism, can achieve precise milling of the watch glass's glued edge, ensuring milling quality; after the second feeding plate fixes the watch glass, it is driven to flip by the flipping mechanism, thereby smoothly transferring the watch glass to the first feeding plate for subsequent material handling and storage or direct unloading, avoiding the risks of collision and falling caused by manual flipping; the coordinated operation of each mechanism and station in this module is stable and reliable, which can significantly improve processing quality and effectively improve overall processing efficiency, meeting the needs of high-efficiency production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the automatic milling module for the glue port of watch glass in an embodiment of the present invention; Figure 2 This is another schematic diagram of the automatic milling module for watch glass in an embodiment of the present invention; Figure 3 This is a schematic diagram of the feeding conveyor mechanism in an embodiment of the present invention; Figure 4 This is a schematic diagram of a step difference detection station in an embodiment of the present invention; Figure 5 This is a schematic diagram of a milling station in an embodiment of the present invention; Figure 6 This is an enlarged schematic diagram of part A in an embodiment of the present invention; Figure 7 This is a schematic diagram of a flipping station in an embodiment of the present invention; Figure 8 This is a schematic diagram of a finished product storage station in an embodiment of the present invention; The diagram is labeled with the following names and numbers: Machine base - 1; Feeding and conveying mechanism - 2; First multi-axis material handling mechanism - 3; Step difference detection station - 4; Milling station - 5; Tilting station - 6; Fixture - 21; Step difference detection camera - 41; Milling head - 51; Tilting mechanism - 61; First feeding plate - 62; Second feeding plate - 63; Positioning slot - 210; Complementary light - 42; Annular light source - 421; Platform - 52; First hollow hole - 520; Rotary drive assembly - 53; Lifting adjustment assembly - 54; First receiving slot - 630; Suction nozzle - 64; Second receiving slot - 620; Second multi-axis material handling mechanism - 7; Finished product storage station - 8; Material tray - 81; First material handling execution end - 31; First XYZ axis drive assembly - 32; Second material handling execution end - 71; Second XYZ axis drive assembly - 72. Detailed Implementation

[0016] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0017] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0018] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0019] Furthermore, the terms indicating orientation, such as "up," "down," "front," "back," "left," "right," "upper end," and "lower end," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0021] This invention provides an automatic milling module for the glue nozzle of watch glass, such as... Figure 1 , 2As shown, the automatic milling module for watch glass includes a machine base 1, on which are mounted a feeding conveyor mechanism 2, a first multi-axis transfer mechanism 3, a step difference detection station 4, a milling station 5, and a flipping station 6. A fixture 21 is mounted on the feeding conveyor mechanism 2, and the fixture 21 reciprocates along the length of the feeding conveyor mechanism 2. The fixture 21 is used to carry the watch glass after it has been potted and cured. The first multi-axis transfer mechanism 3 is used to transfer the watch glass on the fixture 21 to the step difference detection station 4, the milling station 5, and the flipping station 6 respectively. The step difference detection station 4 includes… The system includes a step difference detection camera 41 with its lens facing upwards; a milling station 5 includes a milling mechanism with a milling head 51, the milling end of which faces upwards; a flipping station 6 includes a flipping mechanism 61, a first feeding plate 62, and a second feeding plate 63. The second feeding plate 63 is located at the drive end of the flipping mechanism 61 and flips back and forth relative to the first feeding plate 62. When the second feeding plate 63 is in the first position, it receives and fixes the watch glass. When the second feeding plate 63 is in the second position, it transfers the watch glass to the first feeding plate 62.

[0022] Among them, the feeding conveyor mechanism 2 is used to realize the continuous feeding of watch glass, such as Figure 3 As shown, a fixture 21 is configured on the feeding conveyor 2, which can reciprocate along the length of the feeding conveyor 2, providing a stable carrier and conveying medium for the watch glass. The specific structure of the fixture 21 is adapted to the shape of the watch glass. Its top surface has a positioning groove 210 that matches the shape of the watch glass. The inner circumferential sidewall of the positioning groove 210 is provided with an annular flexible limiting ring. The flexible limiting ring can not only position the watch glass to prevent displacement during the conveying process, but also prevent scratches on the surface of the watch glass through flexible contact, ensuring the appearance quality of the product. The first multi-axis transfer mechanism 3 is the core of the watch glass transfer of the entire module. It is responsible for transferring the watch glass, which has been potted and cured, carried by the fixture 21 on the feeding conveyor 2 to the step difference detection station 4, the milling station 5, and the flipping station 6, respectively, realizing the transfer of watch glass between the stations. It has multi-directional movement capability and can accurately meet the watch glass pick-up and put-down needs of each station, ensuring a smooth and efficient transfer process. The feeding conveyor 2 includes, for example, a linear guide rail conveying assembly.

[0023] Before milling the adhesive after removing the watch glass, the first multi-axis material handling mechanism 3 sends the watch glass to the step difference detection station 4 for preliminary step difference detection. In this embodiment, the step difference detection station 4 is used to detect the step difference size of the adhesive opening after the watch glass is filled and cured, so as to judge the condition of the adhesive opening and provide an accurate basis for subsequent adhesive milling operations. In addition, after the adhesive is milled, the step difference detection station 4 is also used to detect the step difference size of the adhesive opening of the watch glass after the adhesive is milled, to determine whether the adhesive opening meets the discharge standard, and to provide quality assurance for subsequent discharge. In this case, the lens of the step difference detection camera 41 faces upward. After the first multi-axis material handling mechanism 3 picks up the watch glass, it moves it above the lens of the step difference detection camera 41. The lens of the step difference detection camera 41 is used to take pictures and detect the adhesive opening of the watch glass located above it. After the detection is completed, the first multi-axis material handling mechanism 3 transfers the watch glass to the adhesive milling station 5 for adhesive opening milling operation.

[0024] Specifically, the first multi-axis material handling mechanism 3 includes a detachable first material handling actuator 31 for handling watch glass. The first material handling actuator 31 can be replaced according to actual needs to adapt to the handling requirements of watch glass of different specifications and shapes. The first material handling actuator 31 may, for example, adopt a single columnar suction head vertically downward distributed structure. Furthermore, the first multi-axis material handling mechanism 3 also includes a first XYZ axis drive assembly 32, and the first material handling actuator 31 is driven by the first XYZ axis drive assembly 32, thereby realizing multi-directional movement of the first material handling actuator 31 in the X, Y, and Z directions, ensuring the accuracy and flexibility of the material handling and transfer process.

[0025] Furthermore, such as Figure 4 As shown, the step difference detection station 4 also includes a supplementary light unit 42, which includes a ring-shaped light-emitting part 421. The ring-shaped light-emitting part 421 emits light upwards, providing uniform and soft light to the step difference detection camera 41, avoiding detection errors caused by direct light or shadows. The lens of the step difference detection camera 41 is located below and spaced from the ring-shaped light-emitting part 421. The lens of the step difference detection camera 41 is vertically upwards and directly facing the inner bezel of the ring-shaped light-emitting part 421. The inner diameter of the inner bezel of the ring-shaped light-emitting part 421 matches the outer diameter of the watch glass, ensuring that the light accurately covers the glue joint area of ​​the watch glass. This allows the step difference detection camera 41 to clearly capture the outline and size of the glue joint, achieving accurate step difference detection.

[0026] In this embodiment, the milling station 5 is used to mill the glue opening of the watch glass after preliminary step difference detection, so that the glue opening of the watch glass meets the required size and appearance requirements. This station also includes a platform 52, which is located above the milling mechanism. Specifically, the top surface of the platform 52 has a first hollow hole 520 at its center, within which a support plate for supporting the watch glass is installed. The support plate has a hollow area corresponding to avoid the glue opening area of ​​the watch glass. The milling end of the milling head 51 is vertically upward and directly opposite the first hollow hole 520, specifically directly opposite the hollow area. The inner diameter of the first hollow hole 520 matches the outer diameter of the watch glass, ensuring that when the watch glass is located within the first hollow hole 520 (the first multi-axis material handling mechanism 3 does not move, and the support plate limits the movement of the watch glass), the glue opening area on it can be precisely aligned with the milling end of the milling head 51, providing precise positioning for the milling operation.

[0027] Furthermore, such as Figure 5 As shown, the milling mechanism also includes a rotary drive assembly 53 and a lifting adjustment assembly 54. The drive end of the rotary drive assembly 53 is fixedly connected to the spindle of the milling head 51 (located at the bottom of the milling head 51) and is used to drive the milling head 51 to rotate at high speed to cut the adhesive. The fixed end of the rotary drive assembly 53 is fixedly connected to the drive end of the lifting adjustment assembly 54. The lifting adjustment assembly 54 is used to drive the rotary drive assembly 53 and the milling head 51 to rise and fall as a whole, thereby adjusting the milling depth of the milling head 51 to adapt to the milling requirements of different specifications of watch glass. The lifting adjustment assembly 54, for example, is an XYZ axis drive assembly. Driven by the XYZ axis drive assembly, the rotary drive assembly 53 and the milling head 51 can move in multiple directions in the X, Y, and Z directions, allowing the milling head 51 to move precisely below the first hollow hole 520, thus ensuring the accuracy of the milling operation. The rotary drive assembly 53 is, for example, a rotary motor drive assembly.

[0028] Specifically, the spindle of the milling head 51 is coaxially and fixedly connected to the drive end of the rotary drive assembly 53. The central axis of the milling head 51 coincides with the rotation axis of the rotary drive assembly 53, avoiding eccentric wobbling during rotation and ensuring cutting stability and accuracy. For example, Figure 6As shown, the milling end of the milling head 51 is composed of at least two layers of coaxially arranged annular cutting surfaces stacked together. The diameter of each annular cutting surface decreases sequentially from top to bottom, and the outer edge of each layer of annular cutting surfaces forms an annular cutting edge, making the force more uniform and effectively reducing the vibration of the watch glass. This stepped structure forms chip removal gaps between each layer of annular cutting surfaces, allowing the glue chips generated during grinding to be smoothly discharged from the gaps, avoiding the accumulation of glue chips at the cutting edge, which would affect the cutting effect or scratch the glass surface. The annular contour of the annular cutting edge can better match the shape of the curved glue opening of the watch glass, achieving a close fit grinding, avoiding local overcutting or residual glue, and ensuring the flatness and aesthetics of the glue opening after milling. The milled watch glass will be transferred to the step difference detection station 4 by the first multi-axis material handling mechanism 3 for another step difference detection. The detection method is the same as the preliminary step difference detection mentioned above, and will not be repeated here.

[0029] In this embodiment, as Figure 7 As shown, the flipping station 6 is used to flip and convey watch glass that has passed the second step difference test for further processing or unloading. Specifically, the second feeding plate 63 is used to fix the watch glass. The center of the second feeding plate 63 has a first receiving groove 630. A suction nozzle 64 is fixedly installed at the center of the inner bottom surface of the first receiving groove 630. The suction end of the suction nozzle 64 faces vertically upward. The air inlet end of the suction nozzle 64 is connected to an external negative pressure air source through a pipeline. Through the negative pressure suction, the watch glass is further fixed on the second feeding plate 63, ensuring that the watch glass will not fall off during the flipping process. It can be understood that if the watch glass is confirmed to be unqualified by the milling glue after the second step difference test, it can be transferred by the first multi-axis transfer mechanism 3 to the milling glue station 5 or other stations for processing. This embodiment does not make specific limitations. The flipping mechanism 61 includes, for example, a flipping motor drive assembly.

[0030] The height of the suction nozzle 64 does not exceed the depth of the first receiving groove 630; the suction end face of the suction nozzle 64 is provided with an annular first flexible pad around its suction port to ensure the stability of the suction and avoid scratching the watch glass.

[0031] In this embodiment, a second receiving groove 620 is formed at the center of the top surface of the first feeding plate 62. The inner bottom surface of the second receiving groove 620 is hollowed out and forms an annular support portion. The annular support portion is used to support the edge of the watch glass, preventing the central area of ​​the inner bottom surface of the second receiving groove 620 from contacting the glue-sealing area of ​​the watch glass, thus preventing scratches on the glue-sealing surface after milling. A flexible annular pad can also be provided on the support surface of the annular support portion as needed to improve the protection of the watch glass.

[0032] To further enhance the automation level and production efficiency of this module, in this embodiment, a second multi-axis material handling mechanism 7 is also provided on the machine base 1, and the feeding conveyor mechanism 2 is located between the first multi-axis material handling mechanism 3 and the second multi-axis material handling mechanism 7; the horizontal linear movement directions of the first multi-axis material handling mechanism 3, the second multi-axis material handling mechanism 7, and the feeding conveyor mechanism 2 are all consistent, facilitating the orderly transfer and connection of the watch glass. Figure 2 As shown, the second multi-axis material handling mechanism 7 includes a detachable second material handling actuator 71, which is also used for handling watch glass. The second material handling actuator 71 can be replaced according to actual needs to adapt to the handling requirements of watch glass of different specifications and shapes. The second material handling actuator 71 may employ a structure with multiple suction heads distributed vertically downwards. Furthermore, the second multi-axis material handling mechanism 7 also includes a second XYZ axis drive assembly 72, and the second material handling actuator 71 is driven by the second XYZ axis drive assembly 72, thereby enabling the second material handling actuator 71 to move in multiple directions in the X, Y, and Z directions, ensuring the accuracy and flexibility of the material handling and transfer process.

[0033] Furthermore, such as Figure 8 As shown, the machine tool 1 is also equipped with a finished product storage station 8, which includes a material tray 81 for storing watch glass after milling. The second multi-axis transfer mechanism 7 and the first feeding plate 62 are both located close to the material tray 81, facilitating the transfer of watch glass from the first feeding plate 62 to the material tray 81 by the second multi-axis transfer mechanism 7. The material tray 81 has several third receiving slots, which are evenly distributed in a matrix to achieve orderly storage of multiple watch glasses. Furthermore, each third receiving slot has a circular second flexible pad on its inner bottom surface, which also enhances the protection of the watch glass.

[0034] In this embodiment, the flexible structures such as the flexible limiting ring, the first flexible gasket, and the second flexible gasket can all be made of silicone material. The manufacturing process is relatively existing, and no specific limitations are made here.

[0035] It should be noted that the structures of the first multi-axis material transfer mechanism 3, the second multi-axis material transfer mechanism 7, the rotary drive assembly 53, the lifting and adjusting assembly 54, the flipping mechanism 61, and the feeding and conveying mechanism 2 are all existing technologies, and the attached drawings are only examples. In actual applications, the design and selection can be made according to the actual application requirements. This embodiment does not impose specific limitations and should be based on the actual application.

[0036] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An automatic milling module for watch glass, comprising a machine base, characterized in that, The machine platform is equipped with a feeding conveyor mechanism, a first multi-axis material handling mechanism, a step difference detection station, a milling station, and a flipping station. A fixture is mounted on the feeding conveyor mechanism, and the fixture reciprocates along the length of the feeding conveyor mechanism. The fixture is used to carry the watch glass after it has been potted and cured. The first multi-axis material handling mechanism is used to transfer the watch glass from the fixture to the step difference detection station, the milling station, and the flipping station, respectively. The step difference detection station includes a step difference detection camera with its lens facing upwards. The milling station includes a milling mechanism with a milling head, the milling end of which faces upwards. The flipping station includes a flipping mechanism, a first feeding plate, and a second feeding plate. The second feeding plate is located at the drive end of the flipping mechanism and flips back and forth relative to the first feeding plate. When the second feeding plate is in a first position, it receives and fixes the watch glass; when the second feeding plate is in a second position, it transfers the watch glass to the first feeding plate.

2. The automatic milling module for watch glass according to claim 1, characterized in that, The step difference detection station also includes a supplementary light source, which includes an annular light-emitting part with the light emission direction facing upwards; the lens of the step difference detection camera is located below the annular light-emitting part and is spaced apart from it, and the lens of the step difference detection camera faces vertically upwards and is directly opposite the inner ring of the annular light-emitting part.

3. The automatic milling module for watch glass according to claim 1, characterized in that, The milling station also includes a platform, which is located above the milling mechanism; a first hollow hole is opened at the center of the top surface of the platform, and the milling end of the milling head is vertically upward and directly opposite the first hollow hole.

4. The automatic milling module for watch glass according to claim 1 or 3, characterized in that, The milling mechanism further includes a rotary drive assembly and a lifting adjustment assembly. The drive end of the rotary drive assembly is fixedly connected to the spindle of the milling head, and the fixed end of the rotary drive assembly is fixedly connected to the drive end of the lifting adjustment assembly.

5. The automatic milling module for watch glass according to claim 1, characterized in that, The second feeding plate has a first receiving groove in the center. A suction nozzle is fixedly installed in the center of the inner bottom surface of the first receiving groove. The suction end of the suction nozzle faces vertically upward, and the air inlet end of the suction nozzle is connected to an external negative pressure air source through a pipeline.

6. The automatic milling module for watch glass according to claim 5, characterized in that, The height of the suction nozzle does not exceed the depth of the first receiving groove; the suction end face of the suction nozzle is provided with an annular first flexible gasket around its suction port.

7. The automatic milling module for watch glass according to any one of claims 1, 5, and 6, characterized in that, The top surface of the first feeding plate has a second receiving groove at its center, and the inner bottom surface of the second receiving groove is hollowed out and forms an annular support part.

8. The automatic milling module for watch glass according to claim 1, characterized in that, The top surface of the fixture is provided with a positioning groove that matches the shape of the watch glass, and the inner circumferential sidewall of the positioning groove is provided with an annular flexible limiting ring.

9. The automatic milling module for watch glass according to claim 1, characterized in that, The machine base is also equipped with a second multi-axis material transfer mechanism, and the feeding conveying mechanism is located between the first and second multi-axis material transfer mechanisms; the horizontal linear movement directions of the first, second, and feeding conveying mechanisms are all the same.

10. The automatic milling module for watch glass according to claim 9, characterized in that, The machine platform is also provided with a finished product storage station, which includes a material tray. The second multi-axis material handling mechanism and the first material feeding plate are both located close to the material tray. The material tray is provided with a number of third receiving slots, which are evenly distributed in a matrix. The inner bottom surface of each third receiving slot is provided with a circular second flexible pad.

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