Automatic watchcase assembling machine

Abstract

The invention relates to the technical field of automatic assembling, in particular to an automatic watchcase assembling machine which comprises a rack, a material stirring mechanism, a backflow mechanism and a feeding mechanism, the material stirring mechanism, the backflow mechanism and the feeding mechanism are installed on the rack, the material stirring mechanism comprises a carrier, a first guide rail and a stirring assembly, the carrier is slidably arranged on the first guide rail, and the stirring assembly is arranged along one side of the first guide rail; the shifting assembly is used for driving the carrier to move along the first guide rail in a stepping mode, the backflow mechanism is arranged below the shifting mechanism, the carrier is in sliding connection with the backflow mechanism, the first guide rail and the backflow mechanism jointly form a closed loop for circulating operation of the carrier, and the feeding mechanism is arranged above the first guide rail. The conveying device is used for conveying the parts into a carrier located on the first guide rail. The part assembling device has the effects that the parts can be accurately moved to the next station, and deviation during part assembling is prevented.

Description

Technical Field

[0001] This application relates to the technical field of automated assembly, and in particular to an automated watch case assembly machine. Background Technology

[0002] A wristwatch is a portable timepiece worn on a person's wrist. The watch case is the outer casing of the watch body, primarily serving to protect the internal components such as the movement and dial. Its material determines the watch's water and dust resistance; common types include stainless steel, tungsten steel, ceramic, and titanium alloy.

[0003] Watch cases are typically assembled manually, but this process is inefficient. Therefore, automated equipment is needed to assemble watch cases, thereby reducing labor costs and improving the efficiency of watch case manufacturing.

[0004] Automated equipment is typically in the form of assembly lines, where each production unit focuses on handling only one specific segment of the work to improve efficiency and output. Therefore, the conveying method is mostly unidirectional movement in a sequential sequence.

[0005] However, this one-way transportation has its problems. During the movement, the parts may not be positioned accurately or may not stop precisely at the position of the next process. This can cause the next part to be misaligned when it is assembled, resulting in the product needing to be reworked or scrapped, which reduces production efficiency. Summary of the Invention

[0006] To ensure precise movement of parts to the next workstation and prevent misalignment during assembly, this application aims to provide an automatic watch case assembly machine. The technical solution adopted is as follows: Includes a frame, a feeding mechanism, a return mechanism, and a loading mechanism mounted on the frame; The feeding mechanism includes a carrier, a first guide rail, and a feeding component; the carrier is slidably mounted on the first guide rail; the feeding component is arranged along one side of the first guide rail and is used to drive the carrier to move stepwise along the first guide rail. The return mechanism is located below the feeding mechanism, and the carrier is slidably connected to the return mechanism. The first guide rail and the return mechanism together form a closed loop for the carrier to circulate. The feeding mechanism is located above the first guide rail and is used to transport parts to a carrier located on the first guide rail.

[0007] By adopting the above technical solution, the actuating component drives the carrier to move stepwise, ensuring that each carrier stops precisely at each working position. This intermittent movement provides a stable working window for the robot or automated equipment, ensuring that each assembly action is completed accurately, reducing errors or malfunctions caused by continuous movement, thereby improving the overall production cycle time and yield. The material feeding mechanism and the return mechanism are arranged vertically to form a closed loop, realizing the automatic recycling of the carrier.

[0008] Optionally, the actuating assembly includes a second guide rail, a first slide plate slidably mounted on the second guide rail, a second slide plate slidably mounted on the slide plate, and an actuating element fixedly mounted on the second slide plate; the length direction of the second guide rail is parallel to the first guide rail.

[0009] By adopting the above technical solution, a compact and precise drive scheme is provided. Through the dual sliding design of the first and second sliding plates, the actuating component mounted on the second sliding plate can perform long-stroke synchronous propulsion along the guide rail direction (i.e., the vehicle's movement direction) and also achieve forward and backward movement perpendicular to the guide rail direction. This allows for precise engagement and disengagement from the vehicle, achieving reliable step-by-step drive and avoiding jamming or inaccurate positioning problems that may occur with continuous pushing.

[0010] Optionally, the actuating component further includes a first driving member, which is fixedly connected to the first sliding plate, and the output end of the first driving member is fixedly connected to the second sliding plate. The first driving member is used to drive the second sliding plate to move in a direction perpendicular to the second guide rail.

[0011] By adopting the above technical solution, precise controllability of the lateral movement of the actuating component is achieved. A dedicated first driving component is set up to control the lateral movement of the second slide plate, ensuring that the actuating component can accurately extend to push the carrier when needed, and retract in time after pushing to prepare for the next pushing action or to make room. This active and independent control improves the reliability and flexibility of the mechanism's movement, avoiding the inconvenience or interference problems that may arise from using purely mechanical cam structures.

[0012] Optionally, it also includes limiting components, of which multiple limiting components are provided, each corresponding to a carrier. The limiting components are located inside the first guide rail. A cylinder is vertically provided at the bottom of the first driving component. The bottom of the cylinder is fixedly connected to the first sliding plate, and the output end of the cylinder is fixedly connected to the first driving component.

[0013] By adopting the above technical solution, each vehicle is equipped with a corresponding limiting component, which is integrated into the first guide rail, effectively ensuring the precise positioning and stability of the vehicle during movement. A vertical cylinder lifts the second sliding plate, raising the bottom of the vehicle above the limiting component, allowing the vehicle to pass over the limiting component and continue moving.

[0014] Optionally, the return mechanism includes a lifting assembly and a transport assembly. There are two lifting assemblies, located below the starting end and the ending end of the first guide rail, respectively. The transport assembly is horizontally connected between the two lifting assemblies.

[0015] By adopting the above technical solution, a highly efficient and space-saving carrier return solution is provided. Through the cooperation of lifting components at both ends and a horizontal transport component in the middle, the space beneath the equipment is cleverly utilized to smoothly and orderly transport the carrier from the end of the production line back to the starting point. This design avoids the problem of doubled equipment length and floor space caused by setting up a return line on the same level as the production line, achieving a compact layout. At the same time, the combination of lifting and horizontal transport ensures the smoothness and stability of the carrier return process.

[0016] Optionally, the lifting assembly includes a second drive component and a lifting frame, wherein the second drive component is fixed on the frame and the output end of the second drive component is connected to the lifting frame.

[0017] By adopting the above technical solution, a vehicle lifting solution with direct drive and stable structure is provided. The second drive component (such as a cylinder or motor) directly drives the lifting frame, resulting in a short power transmission path, rapid control response, and reliable vehicle support for vertical lifting and lowering. This ensures the accuracy and reliability of the vehicle handover process at the beginning and end of the return mechanism.

[0018] Optionally, the transport assembly includes a third guide rail, a third drive unit, and a transport belt, wherein the transport belt is disposed on the third guide rail, and the output end of the third drive unit is rotatably connected to the transport belt.

[0019] By adopting the above technical solution, an efficient and stable horizontal conveying method is provided. The third drive component drives the conveyor belt (such as a belt or chain) to run on the third guide rail, which can achieve long-distance and smooth horizontal transmission of the vehicle with low power consumption. In addition, the conveyor belt has a simple structure, low operating noise, and is easy to maintain, effectively ensuring the transportation efficiency and reliability of the middle section of the return line.

[0020] Optionally, the feeding mechanism includes a clamping assembly for clamping parts and a fourth guide rail, wherein the clamping assembly is slidably connected to the fourth guide rail.

[0021] By adopting the above technical solution, automated and precise part feeding is achieved. By reliably gripping parts with clamping components (such as pneumatic fingers or vacuum suction cups) and moving them along the fourth guide rail, parts can be quickly and accurately transported from the feeding position and placed into the carrier that moves to the workstation, replacing manual operation. This not only improves the feeding speed and positional consistency, but also provides key support for the fully automated operation of the entire assembly machine.

[0022] Optionally, the upper surface of the carrier is provided with positioning pins for precisely positioning the watch case workpiece.

[0023] By adopting the above technical solution, the positioning accuracy during the assembly process is significantly improved. By setting positioning pins on the upper surface of the carrier, precise radial and circumferential positioning of the watch case workpiece can be provided, effectively preventing the workpiece from shifting due to movement or vibration on the carrier, ensuring the accurate execution of subsequent assembly processes (such as pressing and tightening), thereby directly guaranteeing the assembly quality and consistency of the final product.

[0024] Optionally, it also includes a pallet lifting frame for stacking raw material pallets; the pallet lifting frame is located on one side of the feeding mechanism.

[0025] By adopting the above technical solution, automated management and supply of raw material pallets are achieved. Placing the pallet lifting frame on one side of the feeding mechanism allows for the storage of multiple stacked raw material pallets. It typically has an automatic lifting function, enabling the pallets to be delivered to the picking station as needed. In conjunction with the feeding mechanism, it achieves continuous and uninterrupted material supply, greatly extending the continuous operating time of the equipment, reducing the frequency of manual material addition, and further improving the overall automation level and production efficiency of the equipment.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The toggle component drives the carrier to move step by step, so that each carrier stops precisely at each working position. This intermittent motion provides a stable working window for the robot or automated equipment, ensuring that each assembly action can be completed accurately, reducing errors or failures caused by continuous movement, thereby improving the overall production cycle and yield. 2. The actuation mechanism employs a precision double-layer sliding plate and independent drive design, ensuring high stability and accuracy of the vehicle's stepping movement. The return mechanism cleverly utilizes vertical space, efficiently returning the used vehicle to the starting point through a combination of lifting and horizontal transmission, significantly saving equipment floor space. The coordinated operation of these two components ensures smooth system operation, stable cycle time, and a compact layout. 3. The combination of automated feeding mechanism and precise positioning carrier achieves high precision and reliability in parts handling and placement, fundamentally ensuring product assembly quality. Furthermore, the integrated raw material pallet lifting frame further extends the equipment's continuous operating time, reduces downtime for refueling, and comprehensively improves the overall automation level and production efficiency of the machine. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the assembly machine; Figure 2 This is a partial structural diagram of the feeding mechanism and the return mechanism; Figure 3 This is a partial structural diagram of the feeding mechanism, the material feeding mechanism, and the pressing calibration mechanism; Figure 4 This is a partial cross-sectional view of the assembly machine; Figure 5 This is a partial structural diagram of the material feeding mechanism, the material handling mechanism, and the pallet lifting frame; In the picture, 1. Rack; 2. Material feeding mechanism; 21. Carrier; 211. Positioning pin; 22. First guide rail; 221. Positioning pin; 23. Actuating assembly; 231. Second guide rail; 232. First slide plate; 233. Second slide plate; 234. Actuating element; 235. First driving element. 3. Return mechanism; 31. Lifting assembly; 311. Second drive component; 312. Lifting frame; 32. Transport assembly; 321. Third guide rail; 322. Third drive component; 323. Transport belt; 4. Feeding mechanism; 41. Fourth guide rail; 42. Clamping assembly; 421. Suction cup; 422. Vertical arm; 423. Gripper; 424. Top plate. 5. Positioning mechanism; 6. Pallet lifting rack; 61. Pallet; 7. Press calibration mechanism; 71. Drive cylinder; 72. Press block; 8. Limiting components. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0029] An automatic watch case assembly machine, as described above Figure 1 and Figure 2The system includes a frame 1, a material feeding mechanism 2 mounted on the frame 1, a return mechanism 3, and a feeding mechanism 4. The material feeding mechanism 2 includes a carrier 21, a first guide rail 22, and a feeding assembly 23. The carrier 21 is a rectangular plate structure with a positioning groove on the upper part that matches the shape of the watch case parts, and a sliding block at the bottom. The first guide rail 22 is a straight, precision-ground guide rail, horizontally fixed to the upper part of the frame 1. The first guide rail 22 has L-shaped grooves on both sides, with the upper surface of the bottom of the groove abutting against the bottom surface of the sliding block. The groove supports the sliding block, and the carrier 21 can slide along the length of the guide rail. The base of the actuating component 23 is fixedly installed on the worktable and located on one side of the first guide rail 22. The driving direction of the actuating component 23 is parallel to the first guide rail 22. The actuating component 23 drives the carrier 21 to move step by step, so that each carrier 21 will stop precisely at each working position. The intermittent motion provides a stable working window for the robot or automated equipment, ensuring that each assembly action can be completed accurately, reducing errors or failures caused by continuous movement.

[0030] The return mechanism 3 is located directly below the feeding mechanism 2. The first guide rail 22 and the return mechanism 3 are arranged vertically to form a closed loop for the carrier 21 to circulate, realizing the automatic cyclic use of the carrier 21. The loading mechanism 4 spans above the first guide rail 22 and is used to transport parts to the carrier 21 located on the first guide rail 22.

[0031] The carrier 21 is positioned in a step-by-step manner by the toggle component 23, the carrier 21 is automatically circulated by the return channel, and the feeding mechanism 4 completes the high-precision parts delivery, forming a continuous automated assembly process.

[0032] The toggle assembly 23 drives the carrier 21 to move step by step, so that each carrier 21 stops precisely at each working position. This intermittent motion provides a stable working window for the robot or automated equipment, ensuring that each assembly action can be completed accurately, reducing errors or failures caused by continuous movement, thereby improving the overall production cycle and yield.

[0033] Furthermore, the entire process includes five processes: loading the bottom shell, middle frame, left side strip, right side strip, and top cover. Therefore, each of the five processes will have a corresponding loading mechanism 4.

[0034] First, refer to Figure 3 The bottom shell loading mechanism 4 is a servo drive mechanism. The servo drive mechanism is equipped with a suction cup 421 and a fourth guide rail 41. The suction cup 421 moves along the fourth guide rail 41 to the bottom shell storage bin, picks up the bottom shell in the bin, places the bottom shell on the carrier 21 of the first guide rail 22, cancels the suction of the suction cup 421 and returns to the initial position for the next loading.

[0035] Furthermore, refer to Figure 2The upper surface of the carrier 21 is machined with a cavity that matches the shape of the watch case workpiece, and is provided with multiple positioning pins 211 for precise positioning of the watch case workpiece to prevent movement during assembly.

[0036] Furthermore, refer to Figure 2 The actuating component 23 drives the carrier 21 to move along the first guide rail 22, sending the carrier 21 to the next workstation and then returning to the initial position. The actuating component 23 includes a second guide rail 231, a first slide plate 232, a second slide plate 233, and an actuating element 234. The second guide rail 231 is fixedly mounted on the frame 1, and its length direction is parallel to the first guide rail 22. The first slide plate 232 is slidably connected to the second guide rail 231 through a slider or sliding sleeve, and can move along the length direction of the second guide rail 231. Its drive can be realized by an additional cylinder or motor. The second slide plate 233 is mounted on the first slide plate 232 through a linear slide rail, arranged in a stacked manner, and the sliding direction of the second slide plate 233 is perpendicular to the second guide rail 231.

[0037] Furthermore, refer to Figure 2 To facilitate better sliding of the second slide plate 233 on the first slide plate 232, a first driving component 235 is also fixedly installed on the first slide plate 232. The first driving component 235 can be a cylinder or an electric cylinder, and its piston rod or output end is fixedly connected to the second slide plate 233. Through the extension and retraction of the first driving component 235, the second slide plate 233 and its components can be driven to perform reciprocating motion perpendicular to the main conveyor line.

[0038] Furthermore, multiple actuating elements 234 are provided, each corresponding to a specific number of carriers 21 on the first slide rail. Each actuating element 234 is fixedly mounted on the second slide plate 233. The actuating element 234 is fork-shaped, and both ends of the carrier 21 have corresponding locking grooves, allowing the fork to engage with the locking grooves. The first driving element 235 controls the second slide plate 233 to extend, engaging the actuating element 234 with the carrier 21. Subsequently, the first slide plate 232 drives the second slide plate 233 to move, and the actuating element 234 follows, moving the carrier 21 to the next designated workstation. Then, the first driving element 235 controls the second slide plate 233 to retract, separating the actuating element 234 from the carrier 21. The entire actuating assembly 23 returns to its initial position and repeats the above operation. Simultaneously, during loading, the actuating element 234 can act as a fixing element, securing the carrier 21 and preventing it from shifting during loading.

[0039] Furthermore, refer to Figure 4The return mechanism 3 is used to transport the carrier 21 at the end of the production line back to the starting end, forming a closed loop. The return mechanism 3 includes a lifting assembly 31 and a transport assembly 32. Two sets of lifting assemblies 31 are provided, respectively arranged directly below the starting end and the end end of the first guide rail 22. The lifting assembly 31 includes a second drive member 311 and a lifting frame 312. The lifting frame 312 is connected to the output end of the second drive member 311 and is driven by the second drive member 311 to perform vertical lifting and lowering movements. The lifting frame 312, like an elevator, internally supports the carrier 21 and drives the carrier 21 to move up and down.

[0040] The transport assembly 32 is horizontally connected between two lifting assemblies 31 and is used to transport the vehicle 21 over a long distance in the horizontal direction. The transport assembly 32 includes a third guide rail 321, a transport belt 323, and a third drive component 322. The third guide rail 321 serves as the support and guiding foundation for the transport assembly 32. The transport belt 323 (such as a belt or chain plate) is mounted on the third guide rail 321 and is used to carry and transport the vehicle 21. The output end of the third drive component 322 (such as a motor) is rotatably connected to the transport belt 323 through a sprocket or pulley, providing power to the transport belt 323.

[0041] The carrier 21 at the end of the production line is pushed into the track of the end lifting frame 312 by the actuating component 23. The second driving component 311 drives the lifting frame 312 to descend, so that the carrier 21 is lowered onto the third guide rail 321. The conveyor belt 323 starts and horizontally transports the carrier 21 to above the starting end lifting frame 312. The starting end lifting frame 312 rises and lifts the carrier 21 to a position flush with the first guide rail 22, waiting for the actuating component 23 to push it back into the first guide rail 22.

[0042] Furthermore, refer to Figure 1 The device is also equipped with a pallet lifting frame 6. A pallet lifting frame 6 (such as a silo-type elevator) is located on one side of the feeding mechanism 4. It is used to stack raw material pallets 61 containing parts to be assembled, and can automatically lift the pallets 61 to a predetermined height for easy material handling by the feeding mechanism 4.

[0043] Furthermore, refer to Figure 3 After the bottom shell is loaded, the actuating component 23 moves the carrier 21 containing the bottom shell to the second station, namely the middle frame loading area. The clamping component 42 on the loading mechanism 4 of this station consists of a vertical arm 422 and a gripper 423. The vertical arm 422 moves on the fourth guide rail 41 and drives the gripper 423 to move to the tray 61 containing the middle frame, clamp the middle frame in the tray 61, and then place the middle frame on the bottom shell in the carrier 21.

[0044] Furthermore, refer to Figure 3After the middle frame station, a pressing calibration mechanism 7 is set up, including a drive cylinder 71 and a pressure block 72. When the middle frame is placed, the toggle component 23 moves the carrier 21 to the pressing calibration mechanism 7. The drive cylinder 71 drives the pressure block 72 to move downward. The pressure block 72 presses the parts in the carrier 21, presses the middle frame and the bottom shell, and calibrates and adjusts the position to facilitate the loading of the next station.

[0045] Then, the actuator 23 moves the carrier 21 to the next station. The next two stations are for feeding the left and right strips of the product. The clamping components 42 of these two stations are grippers 423. After the grippers 423 grab the left and right strips, they put them into the carrier 21.

[0046] After the left and right side strips are placed, the toggle component 23 moves the carrier 21 to the last station, namely the loading of the top cover. The clamping component 42 of the loading mechanism 4 at this station is the same as that at the first station, which is a suction cup 421. The suction cup 421 is moved to the top cover storage bin to pick up the top cover in the bin. Similarly, a positioning mechanism 5 is set at the top cover station. The positioning mechanism 5 includes clamping and limiting plates, which are located on both sides of the carrier 21 to clamp the carrier 21. The suction cup 421 drives the top cover to move to the carrier 21 and put it in. The top cover and the parts in the carrier 21 are assembled.

[0047] Furthermore, refer to Figure 5 In order to improve the tightness of product assembly, top plates 424 are also provided on both sides of the suction cup 421 of the feeding mechanism 4. When the suction cup 421 places the top cover on the part in the carrier 21, it stops moving. At this time, the suction cup 421 will apply pressure to the product to fix the product. At the same time, the top plates 424 on both sides of the suction cup 421 move downward to apply pressure to the top cover, and tightly assemble the product together. At this time, the positioning mechanism 5 also plays a role in fixing and limiting the product when the top plate 424 squeezes the product.

[0048] Following the upper cover feeding mechanism 4, there is a finished product unloading mechanism. The unloading mechanism picks up the finished products from the carrier 21 and places them on the pallet 61. Next to the pallet 61, there is a pallet lifting frame 6. When the pallet 61 is full of products, the material picking and pushing mechanism next to the pallet 61 pushes the pallet 61 into the pallet lifting frame 6 through a cylinder push rod. The pallet lifting frame 6 rises, and the empty pallet 61 below rises accordingly. The material picking and pushing mechanism then pulls the empty pallet 61 out of the pallet lifting frame 6 through a cylinder push rod, and places products on the empty pallet 61 again, repeating the above operation.

[0049] Finally, after the product on the carrier 21 is removed, the actuating component 23 places the carrier 21 onto the lifting frame 312 located at the end of the first guide rail 22. The lifting frame 312 lowers the carrier 21, and the conveyor belt 323 transports the carrier 21 to the lifting frame 312 located at the beginning of the first guide rail 22, so that the carrier 21 returns to the beginning of the first guide rail 22 for the next operation.

[0050] Reference Figure 4 In order to enable the carrier 21 to stop more accurately at the next work station and to ensure complete assembly, a limit component 8 is provided in the first guide rail 22, and one is provided for each carrier. It can be a limit pin or a limit plate. When the actuating component 23 moves the carrier 21 to the next work station, the carrier 21 touches the limit component 8, and the actuating component 23 will stop moving and return to the initial position.

[0051] At this time, when the actuating component 23 moves the carrier 21 again, since the limit component 8 on the guide rail blocks the movement of the carrier 21, the actuating component 23 needs to first lift the carrier 21 upward so that the bottom of the carrier 21 is higher than the limit component 8. A vertical cylinder can be set at the bottom of the first drive component 235. The bottom of the cylinder is fixedly connected to the first slide plate 232, and the output end of the cylinder is fixedly connected to the first drive component 235. By extending and retracting the cylinder, the first drive component 235 is lifted, thereby lifting the second slide plate 233 and the carrier 21 on the second slide plate 233. After the carrier 21 passes the limit component 8, the cylinder drives the second slide plate 233 to descend, so that the actuating component 23 drives the carrier 21 back to the first guide rail 22 and continues to send it to the next station. Then the carrier 21 is stopped by the limit component 8 of the next station. The operation is repeated to further accurately position the carrier 21, better assemble the parts, and improve production efficiency and product yield.

[0052] The implementation principle of this application embodiment is as follows: The bottom shell loading mechanism 4 grabs the bottom shell and places it into the carrier 21 in the first guide rail 22. The actuating component 23 drives the carrier 21 to move the carrier 21 to the next station. Then, the loading mechanism 4 sequentially places the middle frame and left and right side strips into the carrier 21. Finally, the top cover is placed into the carrier 21 for assembly, completing the product assembly. The unloading mechanism places the assembled product into the pallet 61. The pallet 61 filled with products is then placed into the pallet lifting frame 6. Finally, the empty carrier 21 is placed into the lifting frame 312 located at the end of the first guide rail 22 by the actuating component 23. The lifting frame 312 drives the carrier 21 to descend. The carrier 21 is transported to the lifting frame 312 located at the initial end of the first guide rail 22 by the conveyor belt 323. Finally, the carrier 21 returns to the initial position, waiting for the actuating component 23 to actuate for the next part loading.

[0053] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic watch case assembly machine, characterized in that, It includes a frame (1), a feeding mechanism (2) mounted on the frame (1), a return mechanism (3) and a feeding mechanism (4); The feeding mechanism (2) includes a carrier (21), a first guide rail (22), and a feeding component (23); the carrier (21) is slidably mounted on the first guide rail (22); the feeding component (23) is arranged along one side of the first guide rail (22), and the feeding component (23) is used to drive the carrier (21) to move stepwise along the first guide rail (22); The return mechanism (3) is located below the feeding mechanism (2). The carrier (21) is slidably connected to the return mechanism (3). The first guide rail (22) and the return mechanism (3) together form a closed loop for the carrier (21) to run cyclically. The feeding mechanism (4) is located above the first guide rail (22) and is used to transport the parts to the carrier (21) located on the first guide rail (22).

2. The automatic watch case assembly machine according to claim 1, characterized in that, The actuation assembly (23) includes a second guide rail (231), a first slide plate (232) slidably mounted on the second guide rail (231), a second slide plate (233) slidably mounted on the slide plate, and an actuating element (234) fixedly mounted on the second slide plate (233); the length direction of the second guide rail (231) is parallel to the first guide rail (22).

3. The automatic watch case assembly machine according to claim 2, characterized in that, The actuation component (23) further includes a first drive member (235), which is fixedly connected to the first slide plate (232). The output end of the first drive member (235) is fixedly connected to the second slide plate (233). The first drive member (235) is used to drive the second slide plate (233) to move in a direction perpendicular to the second guide rail (231).

4. The automatic watch case assembly machine according to claim 3, characterized in that, It also includes a limiting component (8), which is provided in multiple ways and corresponds one-to-one with the carrier (21). The limiting component (8) is located in the first guide rail (22). A cylinder is vertically provided at the bottom of the first driving member (235). The bottom of the cylinder is fixedly connected to the first slide plate (232), and the output end of the cylinder is fixedly connected to the first driving member (235).

5. The automatic watch case assembly machine according to claim 1, characterized in that, The return mechanism (3) includes a lifting component (31) and a transport component (32). There are two lifting components (31), which are located below the starting end and the end end of the first guide rail (22), respectively. The transport component (32) is horizontally connected between the two lifting components (31).

6. The automatic watch case assembly machine according to claim 5, characterized in that, The lifting assembly (31) includes a second drive member (311) and a lifting frame (312). The second drive member (311) is fixed on the frame (1), and the output end of the second drive member (311) is connected to the lifting frame (312).

7. The automatic watch case assembly machine according to claim 5, characterized in that, The transport component (32) includes a third guide rail (321), a third drive unit (322), and a transport belt (323). The transport belt (323) is disposed on the third guide rail (321), and the output end of the third drive unit (322) is rotatably connected to the transport belt (323).

8. The automatic watch case assembly machine according to claim 1, characterized in that, The feeding mechanism (4) includes a clamping assembly (42) for clamping parts and a fourth guide rail (41), wherein the clamping assembly (42) and the fourth guide rail (41) are slidably connected.

9. The automatic watch case assembly machine according to claim 1, characterized in that, The upper surface of the carrier (21) is provided with positioning pins (211) for precise positioning of the watch case workpiece.

10. The automatic watch case assembly machine according to claim 1, characterized in that, It also includes a pallet lifter (6) for stacking raw material pallets (61); the pallet lifter (6) is located on one side of the feeding mechanism (4).

Images