Watchcase assembly line and wristband device assembly bus

Abstract

The present application relates to the technical field of smart wearable device processing, in particular to a watch case assembly line body and a wristband device assembly bus, wherein the watch case assembly line body comprises a base, a first assembly unit, a second assembly unit and a conveying module; the first assembly unit is configured to assemble a first key body and a clasp spring to a first mounting hole of a watch case; the second assembly unit is configured to sequentially assemble a second key body to a second mounting hole of the watch case and assemble a screw to a key bracket to assemble with the second key body; and the conveying module is configured to convey the watch case between the first assembly unit and the second assembly unit. The main purpose of the present application is to provide a watch case assembly line body, which aims to complete the assembly between the shell and the key through an automatic process, thereby improving the product processing efficiency, the yield and the like.

Description

[0001] Related applications This application claims priority to Chinese patent application No. 202511288189.3, filed on September 10, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to the field of smart wearable device manufacturing technology, and in particular to a watch case assembly line and a wristband device assembly bus. Background Technology

[0003] As a mainstream wearable smart device, the basic structure of a smartwatch typically includes a watch case and buttons. The buttons are integrated into the side of the watch case and are the core component for human-computer interaction. Users can trigger the corresponding function response of the device through different operation methods such as twisting and pressing.

[0004] Specifically, smartwatches often employ differentiated button designs to distinguish their functions: one is a circular first button, and the other is a square second button. Their functions are clearly defined: turning the first button allows for fine-tuning of device parameters, such as adjusting volume, screen brightness, alarm setting time, or adjusting numerical parameters like target pace and distance in sports mode; pressing the second button allows for directional selection and module switching, such as switching options in the menu list, contact interface, or input interface, like selecting a specific contact, adjusting alarm time parameters, and switching between different functional modules such as time display, activity tracking, and heart rate monitoring. Through these differentiated button operations, users can efficiently interact with the smartwatch and access a variety of functions. However, in current technologies, the assembly of smartwatch cases and buttons is still primarily done manually. Compared to automated assembly processes, manual assembly not only suffers from low efficiency and difficulty in adapting to large-scale mass production needs, but is also prone to fluctuations in product yield due to human error. This fails to meet the high demands of the smart device manufacturing industry for production efficiency and product quality stability, becoming a key bottleneck restricting capacity and quality improvement. Summary of the Invention

[0005] The main objective of this invention is to provide a watch case assembly line that automates the assembly of the watch case and buttons, thereby improving product processing efficiency and yield.

[0006] To achieve the above objectives, the watch case assembly line is used to assemble the watch case and the button assembly. The watch case includes a first mounting hole and a second mounting hole. A button bracket is provided on the outer periphery of the second mounting hole. The button assembly includes a first button and a second button. The first button includes a first button body and a retaining spring. The second button includes a second button body and a screw. The watch case assembly line includes: The base is provided with a first assembly unit, a second assembly unit, and a conveying module; The first assembly unit is configured to assemble the first key body and the retaining ring into the first mounting hole of the case; The second assembly unit is configured to sequentially assemble the second key body into the second mounting hole of the watch case and assemble the screw into the key bracket for assembly with the second key body; The conveying module is configured to convey the watch case between the first assembly unit and the second assembly unit.

[0007] In one embodiment of the present invention, the first assembly unit includes a first housing flipping mechanism, a lifting mechanism, and a snap ring pushing mechanism. The first housing flipping mechanism is configured to flip and rotate the watch case so that the first mounting hole of the watch case is aligned with the lifting end of the lifting mechanism. The lifting mechanism is configured to drive the first key body located at the lifting end to move upward so as to assemble the first key body into the first mounting hole of the watch case; The retaining ring pushing mechanism is configured to push the retaining ring into the watch case so that the retaining ring is assembled with the first key body.

[0008] In one embodiment of the present invention, the base is provided with a case picking station, a button lifting station and a snap ring pushing station in the first assembly unit; The first housing flipping mechanism is set to correspond to the housing material picking station, the lifting mechanism is set to correspond to the button lifting station, and the snap ring pushing station is set to correspond to the snap ring pushing mechanism; The conveying module is also configured to transport the watch case between the watch case picking station, the button lifting station, and the snap ring pushing station.

[0009] In one embodiment of the present invention, the second assembly unit includes a key body loading subunit and a screw loading subunit, the key body loading subunit being connected to the screw loading subunit, and the conveying module being further configured to convey the watch case from the key body loading subunit to the screw loading subunit; The key body feeding subunit includes a second housing flipping mechanism and a key body lowering mechanism, and the screw feeding subunit includes a third housing flipping mechanism, a watch case fixing fixture and a screw feeding mechanism. The second housing flipping mechanism is configured to flip and rotate the watch case so that the second mounting hole of the watch case is aligned with the lifting end of the key body lowering mechanism. The key body lowering mechanism is configured to drive the second key body located at the lifting end to assemble into the second mounting hole of the watch case. The third housing flipping mechanism is configured to receive the watch case and convey it to the watch case fixing fixture. The watch case fixing fixture is configured to switch the watch case to a screw feeding posture. The screw feeding mechanism is configured to assemble the screw into the key bracket for assembly with the second key body.

[0010] In one embodiment of the present invention, both the first housing flipping mechanism and the second housing flipping mechanism include a first flipping part and a rotating part, wherein the rotating part is fixedly disposed on the first flipping part and the rotating part is configured to fix the watch case. The first flipping part is used to flip the watch case so that the watch case changes from a flat position to a first upright position. The rotating part is used to rotate the watch case so that in the first upright position, the insertion port of the first mounting hole is facing the lifting mechanism, or the insertion port of the second mounting hole is facing the key body lowering mechanism.

[0011] In one embodiment of the present invention, the third housing flipping mechanism includes a second flipping part and a locking part, wherein the locking part is disposed on the second flipping part; The second flipping part is used to flip the watch case so that the watch case switches from a flat position to a second upright position. The locking part has at least two locking members that can move closer to each other and further apart. Each of the locking members is configured to abut against the watch case and offset the second key body and the key support.

[0012] In one embodiment of the present invention, the watch case fixing fixture includes a watch case support member and a watch case locking part, the watch case locking part being disposed on the watch case support member; the watch case locking part having at least two locking members that can approach and move away from each other, each of the locking members being configured to abut against and limit the watch case and offset the second key body and the key support; The case locking part is configured to switch the case from the second upright position to the screw loading position.

[0013] In one embodiment of the present invention, the screw feeding subunit is provided with a case picking station and a case locking station, the third housing flipping mechanism is provided corresponding to the case picking station, and the screw feeding mechanism is provided corresponding to the case locking station. The screw feeding subunit has a case docking state, in which the locking part is directly opposite the locking surface of the case support member.

[0014] In one embodiment of the present invention, the second housing flipping mechanism further includes a key abutment portion, the key abutment portion being fixedly disposed on the flipping portion and / or the rotating portion; The key body abutment portion is configured to abut and limit the second key body located on the case.

[0015] The present invention also provides a wristband device assembly bus, the wristband device assembly bus comprising the watch case assembly line as described above.

[0016] In this technical solution, the watch case assembly line achieves full automation of the assembly of the watch case and button components through a base-integrated first assembly unit, second assembly unit, and conveying module. Specifically, the first and second assembly units respectively perform precise operations for assembling the first button (containing a first button body and a retaining spring) with the first mounting hole of the watch case, and the second button (containing a second button body and a screw) with the second mounting hole of the watch case and the button bracket. This avoids problems such as assembly position deviation and uneven force that are prone to occur during manual operation, effectively reducing product defects caused by human error, thereby improving the product yield rate and solving the bottleneck of yield rate fluctuation in manual assembly in the prior art. Simultaneously, the conveying module can automatically transport the watch case between the first and second assembly units without manual handling or workstation switching. Furthermore, the operating efficiency of each assembly unit is far higher than that of manual assembly, enabling continuous and large-scale assembly operations, significantly improving overall product processing efficiency, meeting the needs of large-scale mass production of smartwatches, and overcoming the shortcomings of low efficiency and difficulty in adapting to mass production in the prior art. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0018] Figure 1 A unit layout diagram of an embodiment of the watch case assembly line provided by the present invention; Figure 2 A structural layout diagram of an embodiment of the first assembly unit provided by the present invention; Figure 3 A schematic diagram of the structure of an embodiment of the first housing flipping mechanism provided by the present invention in a first state; Figure 4 A schematic diagram of the structure of an embodiment of the first housing flipping mechanism provided by the present invention in a second state; Figure 5 A schematic diagram of a structure of an embodiment of the lifting mechanism provided by the present invention; Figure 6 A schematic diagram of an embodiment of the snap ring pushing mechanism provided by the present invention; Figure 7 This is a structural layout diagram of an embodiment of the key body loading subunit provided by the present invention; Figure 8 A structural layout diagram of an embodiment of the screw feeding subunit provided by the present invention; Figure 9 A schematic diagram of a structure of an embodiment of the key body lowering mechanism provided by the present invention; Figure 10 A schematic diagram of an embodiment of the third housing flipping mechanism provided by the present invention; Figure 11 This is a schematic diagram of an embodiment of the screw feeding mechanism provided by the present invention.

[0019] Explanation of icon numbers: 10. Base; 11. First assembly unit; 12. Key body loading subunit; 13. Screw loading subunit; 14. Conveying module; 15. Loading unit; 16. Unloading unit; 111. First housing flipping mechanism; 112. Lifting mechanism; 113. Snap ring pushing mechanism; 121. Second housing flipping mechanism; 122. Key body lowering mechanism; 131. Third housing flipping mechanism; 132. Case fixing fixture; 133. Screw feeding mechanism; 141. Conveyor belt; 142. Guide rail; 1111, First flipping part; 1112, Rotating part; 1113, First rotating shaft; 1114, First fixing part; 1121. Lifting drive component; 1122. Workpiece support component; 1123. Button support component; 1124. Guide component; 1131. Horizontal push drive component; 1132. Snap ring limiting component; 1311. Second flipping part; 1312. Locking part; 1313. Second rotating shaft; 1314. Second fixing part; 2. Second key body.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0024] To achieve the above objectives, please refer to Figure 1 , Figure 2 , Figure 7 as well as Figure 8 The watch case assembly line is used to assemble the watch case and the button assembly. The watch case includes a first mounting hole and a second mounting hole. A button bracket is provided on the outer periphery of the second mounting hole. The button assembly includes a first button and a second button. The first button includes a first button body and a retaining spring. The second button includes a second button body and a screw. The watch case assembly line includes: Base 10, which is provided with a first assembly unit 11, a second assembly unit and a conveying module 14; The first assembly unit 11 is configured to assemble the first key body and the retaining ring to the first mounting hole of the case; The second assembly unit is configured to sequentially assemble the second key body 2 into the second mounting hole of the watch case and assemble screws into the key bracket to assemble with the second key body 2; The conveying module 14 is configured to convey the housing between the first assembly unit 11 and the second assembly unit.

[0025] The watch case assembly line proposed in this invention is used to assemble watch cases and button assemblies. The watch case includes a first mounting hole and a second mounting hole. A button bracket is provided on the outer periphery of the second mounting hole. The button assembly includes a first button and a second button. The first button includes a first button body and a retaining spring, and the second button includes a second button body and a screw. The first button and the second button body are two different types of buttons. For example, the first button is a round button, usually used for turning, and the second button is a square button, usually used for pressing. Users can control the smart wearable device to achieve different functions by applying different actions to different buttons.

[0026] It is understood that the watch case assembly line has a basic loading unit 15 and unloading unit 16. The loading unit 15 provides watch cases that have not yet been assembled with the button bracket or provide watch cases that have been pre-assembled with the button bracket. The unloading unit 16 is used to store or transfer watch cases that have been assembled with the buttons. Between the loading unit 15 and the unloading unit 16, there is a first assembly unit 11 and a second assembly unit. The watch case assembly line can be an assembly process from the loading unit 15 to the first assembly unit 11 to the second assembly unit, or it can be an assembly process from the loading unit 15 to the second assembly unit to the first assembly unit 11. In this invention, no limitation is made.

[0027] It needs to be explained that when the feeding unit 15 provides a watch case that has not yet been assembled with the button bracket, the watch case assembly line can first complete the assembly of the first button, and then manually assemble the button bracket. The watch case is then conveyed into the second assembly unit via the conveying module 14 for the assembly of the second button. When the feeding unit 15 provides a watch case pre-installed with the button bracket, the assembly of the second button can be completed first, and the watch case is then conveyed into the first assembly unit 11 via the conveying module 14 for the assembly of the first button.

[0028] Specifically, the base 10 refers to the rigid frame structure that supports each functional module. It can be implemented using a welded steel structure or a CNC-machined aluminum profile frame, providing a stable installation reference for the assembly units. The first assembly unit 11 refers to a dedicated workstation for assembling the first button. It can be implemented using a multi-axis robotic arm in conjunction with a vision positioning system to ensure the coaxiality of the first button and the mounting hole. The second assembly unit refers to a dedicated workstation for assembling the second button. It can be implemented using a servo pressing mechanism in conjunction with a spring preload device to precisely control the spring compression stroke. The conveying module 14 refers to the material transfer system. It can be implemented using one or more conveying devices such as a conveyor belt 141, a shuttle trolley, and a guide rail 142, or a combination of multiple conveying devices; no specific limitations are specified here.

[0029] The conveying module 14 is distributed on the base 10 and has two core functions: the first core function is to realize the flow of the watch case between different units, such as the flow between the first assembly unit 11 and the second assembly unit, and the flow between the feeding unit 15 and the first assembly unit 11; the second core function is to realize the flow of the watch case to different workstations in any unit. For example, in the first assembly unit 11, the first assembly unit 11 has at least a watch case picking workstation, a button lifting workstation, and a snap ring pushing workstation. First, the watch case is transferred from the previous unit to the watch case picking workstation of the first assembly unit 11 under the action of the conveying module 14. At the watch case picking workstation, the watch case can be removed and fixed by a robotic arm, the first housing flipping mechanism 111, etc. Then, under the sliding of the mover of the guide rail 142, it enters the button lifting workstation, where the insertion of the first key body is completed. In summary, the conveying modules 14 distributed in more than 10 positions on the base serve to connect the assembly actions of the watch case assembly line, so that the assembly actions are no longer independent and the assembly between the watch case and the buttons is completed in an orderly manner.

[0030] In the first assembly unit 11, the first key body can be guided into the first mounting hole of the watch case by means of a robotic arm, a directional pushing mechanism, or other devices. Then, the retaining ring is pressed into the watch case so that the retaining ring, the first key body, and the watch case form a whole. The second assembly unit performs two processes. The first step is key body insertion. The second key body 2 is picked up by a robotic arm or attracted by a vacuum suction cup, electrostatic adsorption, or other devices, aligned with the second mounting hole, and then inserted into the second mounting hole from top to bottom in a vertical direction. An electric screwdriver (with torque sensor) is moved to the bracket screw hole position and the screw is screwed into the threaded hole at the bottom of the key body and the bracket hole, thereby realizing the fixed assembly of the key bracket, the second key body, and the watch case.

[0031] In this technical solution, the watch case assembly line, through the first assembly unit 11, the second assembly unit, and the conveying module 14 integrated in the base 10, achieves fully automated assembly of the watch case and button components. Specifically, the first and second assembly units respectively perform precise operations for assembling the first button (containing the first button body and spring clip) with the first mounting hole of the watch case, and the second button (containing the second button body 2 and screw) with the second mounting hole of the watch case and the button bracket. This avoids problems such as assembly position deviation and uneven force that are prone to occur during manual operation, effectively reducing product defects caused by human error, thereby improving the product yield rate and solving the bottleneck of yield rate fluctuation in manual assembly in the prior art. Simultaneously, the conveying module 14 can automatically transport the watch case between the first assembly unit 11 and the second assembly unit without manual handling or workstation switching. Furthermore, the operating efficiency of each assembly unit is far higher than that of manual assembly, enabling continuous and large-scale assembly operations, significantly improving overall product processing efficiency, meeting the needs of large-scale mass production of smartwatches, and overcoming the shortcomings of low efficiency and difficulty in adapting to mass production in the prior art.

[0032] In one embodiment of the present invention, the first assembly unit 11 includes a first housing flipping mechanism 111, a lifting mechanism 112, and a snap ring pushing mechanism 113. The first housing flipping mechanism 111 is configured to flip and rotate the watch case so that the first mounting hole of the watch case is aligned with the lifting end of the lifting mechanism 112. The lifting mechanism 112 is configured to drive the first key body located at the lifting end to move upward so as to assemble the first key body into the first mounting hole of the watch case. The retaining ring push mechanism 113 is configured to push the retaining ring into the watch case so that the retaining ring is assembled with the first key.

[0033] In this embodiment, the first assembly unit 11 integrates a first housing flipping mechanism 111, a lifting mechanism 112, and a snap ring pushing mechanism 113, forming a standardized automated assembly process for the button assembly. First, the first housing flipping mechanism 111 flips and rotates the watch case to achieve precise alignment between the first mounting hole and the lifting end of the lifting mechanism 112. Compared to manual adjustment of the watch case posture, this mechanism uses mechanical limits and drive control, such as a servo motor driving a rotating shaft, to control the hole alignment deviation within a high-precision range, ensuring that the first button / second button can be inserted along the axis of the mounting hole, avoiding scratches on the hole wall or button jamming due to misalignment, thus ensuring accuracy from the assembly starting point. Second, the lifting mechanism 112 carries and lifts the first button through its lifting end, replacing manual pressing. The driving force provided by a cylinder or servo electric cylinder can be precisely set, and different driving forces are provided for different button types. For example, the lifting force for a small-weight first button is set to 5-8N, and the lifting force for a large-weight first button is set to 10-15N. N ensures that the button is fully inserted into the mounting hole, avoiding incomplete assembly due to insufficient manual pressing force, and also prevents deformation of the button or watch case due to excessive torque, solving the problem of uneven manual operation force. After the first button is installed, the watch case can move towards the retaining spring pushing mechanism 113 under the action of the conveying module 14, so that the retaining spring pushing mechanism 113 can realize the assembly of the retaining spring and the button through a flat pushing operation. Alternatively, the retaining spring pushing mechanism 113 can move towards the first housing flipping mechanism 111, which is not limited. Compared with manually installing the retaining spring with tools such as tweezers, this mechanism can constrain the retaining spring posture through the limiting structure and push the retaining spring to the watch case with a constant or linearly changing pushing force, ensuring accurate circumferential or axial positioning of the retaining spring and button, avoiding the risk of button falling off due to loose retaining spring.

[0034] In one embodiment, the first housing flipping mechanism 111 consists of a multi-stage rotating joint and a clamping mechanism. The clamping mechanism is located at the free end of the multi-stage rotating joint. The multi-stage rotating joint enables the switching of different postures of the watch case. The clamping mechanism is used to remove and clamp the outer surface of the watch case from the tray. The lifting mechanism 112 consists of a lifting drive, a guide component, and a positioning fixture. The lifting drive 1121 provides lifting power. The guide component, for example, uses a linear slide rail and a slider to ensure the straightness of the lifting motion. The positioning fixture is designed with a contour groove according to the shape characteristics of the first key body to achieve precise limiting and positioning of the key. The snap ring pushing mechanism 113 consists of a translation drive, a snap ring feeding track, and a pressing head. The translation drive drives the pressing head to move in the horizontal direction. The snap ring feeding track directionally conveys the snap ring to the front end of the pressing head. The pressing head has a groove that matches the snap ring to maintain the snap ring posture and ensure that the snap ring does not shift or fall off during the pushing process. Finally, it is accurately pushed to the assembly position to form a stable fit with the key.

[0035] In another embodiment, the lifting mechanism 112 includes a lifting drive 1121, a supporting workpiece 1122, a guide 1124, and a button support 1123. The supporting workpiece 1122 is fixed to the surface of the base 10. The guide 1124 is located on the side of the supporting workpiece 1122 facing away from the surface of the base 10, with its extension direction perpendicular to the surface of the base 10. The supporting workpiece 1122 movably passes through the guide 1124. The lifting drive 1121 is disposed between the supporting workpiece 1122 and the button support 1123. The lifting end of the lifting drive 1121 is connected to the button support 1123. The first button body is disposed on the support of the button support 1123. Under the action of the lifting drive 1121, the first key body can be inserted into the first mounting hole corresponding to the watch case, thereby realizing the assembly between the watch case and the first key body. In this embodiment, the first housing flipping mechanism 111 with the watch case can reach above the carrying workpiece 1122 under the action of the conveying module 14. It is known that the watch case can be rotated before the first housing flipping mechanism 111 reaches above the carrying workpiece 1122 so that the mounting hole of the watch case is aligned with the corresponding key. Alternatively, the watch case can be flipped after the first housing flipping mechanism 111 reaches above the carrying workpiece 1122 so that the mounting hole of the watch case is aligned with the corresponding key. This is not limited here.

[0036] In another embodiment, the pushing mechanism includes a push drive 1131 and a snap ring limiter 1132, the snap ring limiter 1132 being connected to the movable end of the push drive 1131; the push drive 1131 is configured to drive the snap ring limiter 1132 to translate toward the watch case so that the snap ring is assembled with the first key body.

[0037] The push-drive component 1131 refers to an actuator capable of generating linear motion power, which can be implemented using an electric push rod or a pneumatic slide. Its function is to provide precise translational driving force for the snap ring limiting component 1132. The snap ring limiting component 1132 refers to a mechanical component with a guide groove or positioning structure, which can be implemented using a limiting block with a V-groove. Its function is to physically constrain the snap ring and guide it to move along a set path, ensuring precise alignment of the snap ring and the button assembly position.

[0038] In the first assembly unit 11, the base 10 is provided with a snap ring hopper and a snap ring retrieval robot in the area near the pushing mechanism. Before the snap ring pushing mechanism 113 and the first housing flipping mechanism 111 are aligned, the snap ring retrieval robot takes out the snap ring from the snap ring hopper and assembles it into the snap ring limiting member 1132. Through the automated process, the problem of missing snap rings in the watch case can be avoided.

[0039] Specifically, during the snap ring assembly process, the snap ring retainer 1132 fixes the snap ring's initial position via a guide groove. After the horizontal drive 1131 is activated, it drives the snap ring retainer 1132 to move smoothly in the horizontal direction. When the snap ring retainer 1132 moves to the edge of the mounting hole in the watch case, the snap ring is pushed into the first key body under the guidance of the retainer, completing the mechanical locking between the snap ring and the first key body. During this process, the translational path of the snap ring retainer 1132 remains unchanged from the axis of the watch case mounting hole, preventing the snap ring from deflecting or tilting during assembly.

[0040] In one embodiment of the present invention, the base 10 is provided with a case picking station, a button lifting station and a snap ring pushing station in the first assembly unit 11; the first case flipping mechanism 111 is set corresponding to the case picking station, the lifting mechanism 112 is set corresponding to the button lifting station, and the snap ring pushing station is set corresponding to the snap ring pushing mechanism 113; the conveying module 14 is also configured to convey the case between the case picking station, the button lifting station and the snap ring pushing station.

[0041] In this embodiment, by setting a case picking station, a button lifting station, and a snap ring pushing station in the first assembly unit 11, and by making the first case flipping mechanism 111, the lifting mechanism 112, and the snap ring pushing mechanism 113 correspond one-to-one with each station, and by relying on the conveying module 14 to realize the flow of the case between the stations, an automated assembly system with "clear division of labor and collaborative linkage" is constructed. First, the case picking station, as the assembly starting point, only undertakes the task of grasping the case and adjusting its initial posture. The first case flipping mechanism 111 does not need to take care of the subsequent button assembly action and can focus on stabilizing the case after it is picked up from the tray. Clamping and posture calibration prevent motion interference caused by functional integration, ensuring that the watch case does not fall off or suffer surface damage during the gripping process. The button lifting station focuses on the alignment and assembly of the buttons with the mounting holes in the watch case. The lifting mechanism 112 does not need to consider the initial handling of the watch case; it only needs to precisely control the lifting trajectory of the buttons to ensure that the buttons can be smoothly inserted along the axis of the mounting holes, avoiding alignment deviations caused by too many actions. The snap ring pushing station is specifically responsible for the cooperation and fixation of the snap ring and the buttons. The snap ring pushing mechanism 113 can focus on maintaining the posture of the snap ring and controlling the pushing path to prevent the snap ring from shifting or deforming during assembly. This specialization allows each mechanism to focus its function more effectively, significantly reducing operational errors caused by a single mechanism undertaking multiple tasks, and improving assembly accuracy from the source of the process. The automated transfer of watch cases between workstations via the conveyor module 14 completely replaces the manual transfer of watch cases, bringing dual advantages: Firstly, mechanical transfer ensures the positional accuracy of the watch cases during transfer between workstations, avoiding the offset of the watch case reference caused by hand tremors and placement deviations during manual handling. This ensures that when the watch case enters the next workstation, the mounting holes can be accurately aligned with the corresponding mechanism without additional posture adjustments, reducing process time. Secondly, automated transfer enables the coordinated rhythm of each workstation. The transfer speed of the watch cases can be dynamically matched according to the assembly time of each workstation, avoiding the stagnation of a workstation waiting for watch cases to accumulate or having no watch cases to assemble. This makes the production process of the entire assembly unit more continuous and significantly improves the overall assembly efficiency.

[0042] In one embodiment of the present invention, the second assembly unit includes a key body loading subunit 12 and a screw loading subunit 13, the key body loading subunit 12 being connected to the screw loading subunit 13, and the conveying module 14 being configured to convey the watch case from the key body loading subunit 12 to the screw loading subunit 13; the key body loading subunit 12 includes a second housing flipping mechanism 121 and a key body lowering mechanism 122, and the screw loading subunit 13 includes a third housing flipping mechanism 131, a watch case fixing fixture 132, and a screw loading mechanism 133; the second The housing flipping mechanism 121 is configured to flip and rotate the watch case so that the second mounting hole of the watch case is aligned with the lifting end of the key body lowering mechanism 122. The key body lowering mechanism 122 is configured to drive the second key body 2 located at the lifting end to assemble into the second mounting hole of the watch case. The third housing flipping mechanism 131 is configured to receive the watch case and convey it to the watch case fixing fixture 132. The watch case fixing fixture 132 is configured to switch the watch case to a screw feeding posture. The screw feeding mechanism 133 is configured to assemble the screws into the key bracket for assembly with the second key body 2.

[0043] In this embodiment, the second housing flipping mechanism 121 is the core component for achieving precise adjustment of the watch case's posture. It can be composed of multi-stage rotating joints and a clamping mechanism. Its core function is to receive the watch case transferred by the conveying module 14 and adjust the watch case's posture through mechanical actions so that the second mounting hole of the watch case is aligned with the lifting end of the key body lowering mechanism 122. The multi-stage rotating joints are driven by servo motors, enabling the watch case to flip (e.g., from a horizontal posture to a vertical posture) and fine-tune rotation (rotation angle accuracy ≤ 0.1°), ensuring that the coaxiality error between the second mounting hole and the positioning structure of the key body lowering mechanism 122 is within an acceptable error range. The clamping mechanism fixes the watch case with a constant clamping force of 6-10N, preventing the watch case from falling off and avoiding damage to the surface coating or structure of the watch case, maintaining the stability of the watch case's posture until the key body embedding process is completed. The key lowering mechanism 122 is responsible for smoothly embedding the second key 2 into the second mounting hole of the watch case. It can be composed of lowering drive components such as servo cylinders and linear motors, guide components such as linear slide rails and sliders, and key positioning fixtures. The key positioning fixture fixes the second key 2 through contour grooves and vacuum adsorption to prevent the key from shifting or falling off; the guide components ensure the straightness of the fixture during the lifting process to avoid skew during key embedding; the servo cylinder can precisely control the lowering speed and thrust, which can ensure that the key is fully embedded in the hole and prevent excessive torque from deforming the key or watch case. After embedding, the fixture releases the vacuum and resets, waiting for the next operation. The third housing flipping mechanism 131 undertakes the dual tasks of housing transfer and initial posture adjustment. Structurally, it continues the design of multi-stage rotating joints and clamping mechanisms, but its function focuses more on "connectivity" and "adaptability". Its core function is to receive the housing with the second key body 2 embedded in it from the conveying module 14, quickly grasp it, and drive the housing to complete a second flip, so that the screw holes of the key bracket are aligned with the direction of the electric screwdriver bit of the screw feeding mechanism 133. This provides a precise torque transmission path for subsequent screw locking, while ensuring that the housing posture does not shift during the transfer process and avoiding screw hole misalignment. The watch case fixing fixture 132 is a key guarantee for the stability of the watch case when the screws are tightened. Designed to meet the "torque resistance" requirement, it has multi-point clamping and precise positioning functions. When the third case flipping mechanism 131 puts the watch case into the fixture, the fixture applies clamping force through multiple movable jaws and barbs to counteract the counter-torque when the screws are tightened and prevent the watch case from rotating with the screwdriver.

[0044] The screw feeding mechanism 133 is responsible for the screening, feeding, and precise tightening of screws. It can consist of screws, a feeding tube, and an electric screwdriver. Defective screws are screened by vibration, and qualified screws are sorted with their heads facing forward and blown to the screwdriver bit through the feeding tube. The electric screwdriver uses magnetic attraction to hold the screw, moves it to the front of the screw hole, and then advances it axially. When the tightening action begins, a torque sensor monitors the torque in real time. Once the set value is reached, it automatically stops and rotates in the opposite direction a preset number of times. If the torque is abnormal, an alarm is triggered to ensure the quality of screw tightening. After the watch case enters the second assembly unit, the second case flipping mechanism 121 of the key body loading subunit 12 first grabs the watch case from the conveying module 14. By adjusting the posture, the second mounting hole is aligned with the lifting end of the key body lowering mechanism 122. Then, the positioning fixture of the key body lowering mechanism 122 descends smoothly along the guide assembly under the drive of the servo electric cylinder, embedding the second key body 2 into the second mounting hole at a set speed and thrust. After the key body is embedded, the watch case is transferred to the screw loading subunit 13 through the conveying module 14. The third case flipping mechanism 131 quickly grabs the watch case and flips it to... The screw is placed into the watch case fixing fixture 132, which is used to fix the watch case with multi-point clamping and positioning pins. Then, the screw feeding mechanism 133 selects and feeds the screw to the electric screwdriver bit. After the bit picks up the screw, it is aligned with the screw hole and the tightening action is started. The torque sensor monitors and ensures the locking quality. After the screw assembly is completed, the watch case fixing fixture 132 releases the clamps, and the third housing flipping mechanism 131 sends the watch case back to the conveying module 14 for transfer to the next stage. The entire process achieves automated and high-precision assembly of the second button through the precise cooperation of each mechanism.

[0045] In one embodiment of the present invention, the first housing flipping mechanism 111 and the second housing flipping mechanism 121 both include a first flipping part 1111 and a rotating part 1112. The rotating part 1112 is fixedly disposed on the first flipping part 1111 and is configured to fix the watch case. The first flipping part 1111 is used to flip the watch case so that the watch case switches from a flat position to a first upright position. The rotating part 1112 is used to rotate the watch case so that in the first upright position, the insertion port of the first mounting hole faces the lifting mechanism 112, or the insertion port of the second mounting hole faces the key body lowering mechanism 122.

[0046] In this embodiment, both the first housing flipping mechanism 111 and the second housing flipping mechanism 121 include a first fixing part 1114, a first rotating shaft 1113, a first flipping part 1111, a rotating part 1112, and a driving component. The first fixing part 1114 provides a fixed foundation for other components of the two housing flipping mechanisms and can also fixally connect the conveying module 14, thereby realizing the transfer of the watch case between different workstations. Specifically, the first fixing part 1114 can be composed of multiple sheet metal parts or a single component, which can be connected to different structures by opening slots, holes, protrusions, etc. The first fixing part 1114 is provided with a shaft hole, and the first rotating shaft 1113 is inserted into the shaft hole of the fixing part. The first flipping part 1111 is connected to the first rotating shaft 1113. When the driving component is running, the first rotating shaft 1113 drives the first flipping part 1111 to flip, so that the watch case switches from a flat position to a first upright position, that is, from a flat position to a first upright position. Figure 3 The status shown has switched to Figure 4 In the state shown, the axes of the first and second mounting holes of the watch case change from parallel to intersecting with the surface of the base 10. Then, the rotating part 1112 drives the case to rotate at a preset angle or the rotation angle is fed back by the positioning camera so that the insertion ports of the first and second mounting holes are aligned with the first key body or the second key, so that the first key body or the second key can be inserted into the corresponding mounting hole, thereby realizing the assembly of the key body and the watch face.

[0047] In one embodiment, the rotating part 1112 has two clamping arms that can move closer to or further away from each other. The two clamping arms are simultaneously inserted into the hollow area of ​​the watch case and then cooperate with the inner peripheral wall of the watch case, thereby fixing the rotating part 1112 to the watch case. Alternatively, the rotating part 1112 is designed to adapt to the specific shape and size of the watch case so that the rotating part 1112 can extend into the hollow area of ​​the watch case and then cooperate with the inner peripheral wall of the watch case, thereby fixing the rotating part 1112 to the watch case. Alternatively, to facilitate the insertion of the first key and the second key 2, the clamping arms of the rotating part 1112 act on the outer peripheral surface of the watch case, thereby avoiding structural interference when the first key and the second key 2 are inserted. The rotating part 1112 can rotate under the drive of a rotating motor, thereby aligning the mounting holes of the watch case at different positions in the vertical posture with the lifting mechanism 112 of the first assembly unit 11 or the key lowering mechanism 122 of the second assembly unit.

[0048] It is understood that the flat orientation proposed in this invention refers to the orientation in which the axis of the first mounting hole or the second mounting hole of the watch case is parallel to the surface of the base 10. The flat orientation can be the front of the watch case facing the surface of the base 10, or the back of the watch case facing the surface of the base 10. The first vertical orientation and the second vertical orientation refer to the orientation in which the axis of the first mounting hole or the second mounting hole of the watch case intersects with the surface of the base 10. When it is necessary to assemble the key, the rotation of the rotating part 1112 makes the axis of the first mounting hole or the second mounting hole perpendicular to the surface of the base 10 or form a specific angle with the surface of the base 10 so that the key body can be inserted.

[0049] In one embodiment of the present invention, the third housing flipping mechanism 131 includes a second flipping part 1311 and a locking part 1312, the locking part 1312 being disposed on the flipping part; the second flipping part 1311 is used to flip the watch case so that the watch case switches from a flat position to a second upright position, and the locking part 1312 has at least two locking members that can approach and move away from each other, each locking member being configured to abut against the inner circumferential surface of the watch case and offset the second key body 2 and the key support.

[0050] In this embodiment, the third housing flipping mechanism 131 includes a second fixing part 1314, a second rotating shaft 1313, a second flipping part 1311, a locking part 1312, and a driving component. The second fixing part 1314 provides a fixed foundation for other components of the third housing flipping mechanism 131 and can also fix the conveying module 14, thereby realizing the transfer of the watch case between different workstations. Specifically, the second fixing part 1314 can be assembled from multiple sheet metal parts or be a separate component, which can be connected to different structures by opening slots, holes, protrusions, etc. The second fixing part 1314 is provided with a shaft hole, and the second rotating shaft 1313 is inserted into the shaft hole of the second fixing part 1314. The locking part 1312 is connected to the second rotating shaft 1313. When the driving component is running, the second rotating shaft 1313 drives the second flipping part 1311 to flip, so that the watch case switches from a flat position to a second upright position.

[0051] Please see details. Figure 10 The locking part 1312 includes four locking members, which are spaced apart along the circumference. This creates a multi-point clamping area and a uniform clamping force when clamping the watch case. Specifically, two aligned locking members are inserted into the hollow area of ​​the watch case to abut against the inner circumferential surface of the watch case, while the other two aligned locking members are shorter in length to abut against the inner end face of the watch case. Thus, the multiple spaced locking members can completely avoid the first key body, the second key body 2, and the key bracket, preventing the pre-assembled parts from changing their posture. It is understood that in the subsequent screw-driving process, it is necessary to ensure the positional accuracy between the screw holes on the watch case and the bit of the screw feeding mechanism 133. Therefore, after the watch case is transported to the watch case fixing fixture 132, a high-precision posture fine-tuning is required. Therefore, for the third housing flipping mechanism 131, it is only necessary to ensure that the watch case can be placed in the watch case fixing fixture 132, and there is no need to set up a rotating part 1112 for posture adjustment.

[0052] In one embodiment of the present invention, the watch case fixing fixture 132 includes a watch case support member and a watch case locking part, the watch case locking part being disposed on the watch case support member; the watch case locking part having at least two locking members that can approach and move away from each other, each locking member being configured to abut against the inner circumferential surface of the watch case and offset the second key body 2 and the key support; the watch case locking part being configured to switch the watch case from a second upright posture to a screw loading posture.

[0053] In this embodiment, the watch case support can adopt a planar support structure or a curved contour structure. For example, positioning pins or vacuum suction holes can be provided on the support surface to constrain the horizontal displacement of the watch case. The locking component can be a wedge block, a pneumatic gripper, or an electromagnetically driven slider. Its movement path forms an angle with the normal direction of the inner circumference of the watch case, for example, cutting into the inner wall of the watch case at a preset angle. Multi-point dynamic clamping is achieved through friction and structural limiting. The watch case locking part can integrate a linear module or a rotary cylinder. For example, a servo motor drives a lead screw mechanism to move the locking component a predetermined distance along a preset direction, thereby ensuring the watch case is locked on the watch case support.

[0054] After the watch case carrier is placed on the watch case, the watch case carrier can fix the bottom surface of the watch case by vacuum adsorption. Then, the two locking parts are moved away from each other by the driving components such as cylinders and motors, thereby forming a clamping effect on the watch case. At the same time, during the movement of the locking parts, there will be at least a period of contact with the watch case. Therefore, after the locking parts move into place, they can change the posture of the watch case on the watch case carrier, thereby forcing the watch case into the screw-loading posture.

[0055] In one embodiment of the present invention, please refer to Figure 8 The screw feeding subunit 13 is provided with a case picking station and a case locking station. The third case flipping mechanism 131 is set in accordance with the case picking station, and the screw feeding mechanism 133 is set in accordance with the case locking station. The screw feeding subunit 13 has a case docking state. In the case docking state, the locking part 1312 is directly opposite the locking surface of the case carrier.

[0056] In this embodiment, the third housing flipping mechanism 131 is set corresponding to the housing picking station so that the housing picking station receives the housing located in the third housing flipping mechanism 131, and the screw feeding mechanism 133 is set corresponding to the housing locking station so as to perform the screwing process; during this process, the housing fixing fixture 132 moves between the housing picking station and the housing locking station to realize the transfer of the housing; wherein, when the housing fixing fixture 132 receives the housing from the third housing flipping mechanism 131, the locking part 1312 of the third housing flipping mechanism 131 is directly facing the locking surface of the housing carrier, so that when the housing is transferred, the housing in the second vertical position can be prevented from changing its posture.

[0057] In one embodiment of the present invention, the second housing flipping mechanism 121 further includes a key body abutting portion, which is fixedly disposed on the first flipping portion 1111 and / or the rotating portion 1112; the key body abutting portion is configured to abut against the second key body 2 located on the watch case.

[0058] In this embodiment, the key body abutting portion protrudes from the surface of the first flipping portion 1111 and / or the rotating portion 1112. When the rotating portion 1112 clamps the watch case, the key body abutting portion can abut against the second key body 2 located on the watch case. This is because when the watch case needs to flow from the key body loading subunit 12 to the screw loading subunit 13, in order to facilitate the stable flow of the watch case, the watch case needs to flow in a flat position. However, the second key body and the key support on the watch case have not yet been locked by screws, and the watch case is in the first vertical position. Therefore, the watch case needs to switch from the first vertical position to the flat position. That is, the first flipping part 1111 rotates, and the second key body is prone to shift or fall off due to gravity or centrifugal force during the flipping process. Therefore, by setting the key body abutting part, the posture of the second key body 2 on the watch case can be constrained at all times, and the position of the second key body 2 relative to the key support can be avoided during the flipping process of the watch case. It can be understood that the key body abutting part can be a protruding structure, which can limit the second key body 2 through multi-point contact, or it can include multiple L-shaped limiting blocks so that part of the structure of the second key body 2 can be inserted into the key body abutting part. The shape of the key body abutting part is not limited.

[0059] This invention also proposes a wristband device assembly bus, which includes all the watch case assembly lines described above. Specifically, the wristband device assembly bus includes watch case assembly lines, display screen assembly lines, watch dial assembly lines, etc. By using an automated wristband device assembly bus, efficient and precise assembly can be achieved. The specific structure of the watch case assembly line is as described in the above embodiments. Since the wristband device assembly bus proposed in this invention adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0060] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A watch case assembly line for assembling a watch case and a key assembly, the watch case including a first mounting hole and a second mounting hole, the watch case being provided with a key support at an outer periphery of the second mounting hole, the key assembly including a first key and a second key, the first key including a first key body and a circlip, the second key including a second key body and a screw, characterized in that, The watch case assembly line includes: The base is provided with a first assembly unit, a second assembly unit, and a conveying module; The first assembly unit is configured to assemble the first key body and the retaining ring into the first mounting hole of the case; The second assembly unit is configured to sequentially assemble the second key body into the second mounting hole of the watch case and assemble the screw into the key bracket for assembly with the second key body; The conveying module is configured to convey the watch case between the first assembly unit and the second assembly unit; The first assembly unit includes a first housing flipping mechanism, a lifting mechanism, and a snap ring pushing mechanism. The first housing flipping mechanism is configured to flip and rotate the watch case so that the first mounting hole of the watch case is aligned with the lifting end of the lifting mechanism. The lifting mechanism is configured to drive the first key body located at the lifting end to move upward so as to assemble the first key body into the first mounting hole of the watch case; The retaining ring pushing mechanism is configured to push the retaining ring into the watch case so that the retaining ring is assembled with the first key body; The second assembly unit includes a key body loading subunit and a screw loading subunit, the key body loading subunit being connected to the screw loading subunit, and the conveying module being configured to convey the watch case from the key body loading subunit to the screw loading subunit; The key body feeding subunit includes a second housing flipping mechanism and a key body lowering mechanism, and the screw feeding subunit includes a third housing flipping mechanism, a watch case fixing fixture and a screw feeding mechanism. The second housing flipping mechanism is configured to flip and rotate the watch case so that the second mounting hole of the watch case is aligned with the lifting end of the key body lowering mechanism. The key body lowering mechanism is configured to drive the second key body located at the lifting end to assemble into the second mounting hole of the watch case. The third housing flipping mechanism is configured to receive the watch case and convey it to the watch case fixing fixture. The watch case fixing fixture is configured to switch the watch case to a screw feeding posture. The screw feeding mechanism is configured to assemble the screw into the key bracket for assembly with the second key body.

2. The case assembly line body according to claim 1, wherein The base is provided with a case picking station, a button lifting station and a snap ring pushing station in the first assembly unit; The first housing flipping mechanism is set to correspond to the housing material picking station, the lifting mechanism is set to correspond to the button lifting station, and the snap ring flat pushing station is set to correspond to the snap ring pushing mechanism; The conveying module is also configured to transport the watch case between the watch case picking station, the button lifting station, and the snap ring pushing station.

3. The case assembly line body according to claim 1, wherein Both the first housing flipping mechanism and the second housing flipping mechanism include a first flipping part and a rotating part. The rotating part is fixedly disposed on the first flipping part and is configured to fix the watch case. The first flipping part is used to flip the watch case so that the watch case changes from a flat position to a first upright position. The rotating part is used to rotate the watch case so that in the first upright position, the insertion port of the first mounting hole is facing the lifting mechanism, or the insertion port of the second mounting hole is facing the key body lowering mechanism.

4. The watch case assembly line as described in claim 1, characterized in that, The third housing flipping mechanism includes a second flipping part and a locking part, wherein the locking part is disposed in the second flipping part; The second flipping part is used to flip the watch case so that the watch case switches from a flat position to a second upright position. The locking part has at least two locking members that can move closer to each other and further apart. Each of the locking members is configured to abut against the watch case and offset the second key body and the key support.

5. The watch case assembly line as described in claim 4, characterized in that, The watch case fixing fixture includes a watch case support and a watch case locking part. The watch case locking part is disposed on the watch case support. The watch case locking part has at least two locking members that can approach and move away from each other. Each locking member is configured to abut against and limit the watch case and offset the second key body and the key support. The case locking part is configured to switch the case from the second upright position to the screw loading position.

6. The watch case assembly line as described in claim 5, characterized in that, The screw feeding subunit is provided with a case picking station and a case locking station. The third case flipping mechanism is set up corresponding to the case picking station, and the screw feeding mechanism is set up corresponding to the case locking station. The screw feeding subunit has a case docking state, in which the locking part is directly opposite the locking surface of the case support member.

7. The watch case assembly line as described in claim 3, characterized in that, The second housing flipping mechanism further includes a key abutment portion, which is fixedly disposed on the flipping portion and / or the rotating portion; The key body abutment portion is configured to abut and limit the second key body located on the case.

8. A wristband device assembly bus, characterized in that, The wristband device assembly bus includes a case assembly line as described in any one of claims 1 to 7.

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