Automatic rotating machine for watch back case

Abstract

The present invention discloses an automatic turntable machine for watch back shells, including a material feeding and transferring device, which transfers a cleaning rack loaded with watch back shells to the turntable machine and cools it; a positioning and reversing device, which is used to position the watch back shell and change its direction, and at the same time recover and store the cleaning rack; a baking tray feeding device, which stores and provides baking trays suitable for watch back shells of different sizes; a tray storage device, which is used to place baking trays for watch back shells to be placed and store the baking trays after placement; a gantry transport mechanism, which is used to transfer and transport the cleaning rack, baking tray, and watch back shell. The automatic turntable machine for watch back shells of the present invention can realize the automatic transfer of the watch back shell from the cleaning rack to the baking tray, and the recognition and transfer are accurate and efficient; it can realize the automatic storage of the cleaning rack and the baking tray (before and after the watch back shell is placed), effectively reducing material handling and improving efficiency, and at the same time, it can also automatically transport the baking tray for transferring the watch back shell to the feeding end of the next screen printing equipment.

Description

Technical Field

[0001] The invention relates to the field of watch back case production equipment, and in particular to an automatic turntable machine for watch back cases. Background Art

[0002] During the production process of the watch back case, it needs to be transferred to a special baking tray after ultrasonic cleaning so that the watch back case in the baking tray can be screen printed. Currently, the turntable process is mainly completed manually. However, there are differences in the styles of watch back cases, and the human eye has a high error rate in recognition. In addition, the entire turntable process is inefficient and involves a lot of material handling work.

[0003] In view of this, the inventor of the present application invented an automatic rotating disc machine for the back case of a watch. Summary of the invention

[0004] The object of the present invention is to provide an automatic watch back case turntable machine which has low turntable error rate, high efficiency and can effectively reduce material handling.

[0005] To achieve the above object, the present invention adopts the following technical solution: a watch back cover automatic turntable machine, comprising:

[0006] The feeding and transferring device transfers the cleaning rack loaded with the watch back shells to the turntable machine and cools it;

[0007] Positioning and reversing device, used to position the back case of the watch and change its direction, while recovering and storing the cleaning rack;

[0008] The baking tray feeding device stores and provides baking trays suitable for watch back cases of different sizes;

[0009] A tray storage device is used to place baking trays for the watch back cases and store the baking trays after they are placed;

[0010] The gantry transport mechanism is used to transport the cleaning rack from the feeding and transferring device to the positioning and reversing device, transport the baking tray to the tray storage device, transport the watch back case to the positioning and reversing device, and transport the watch back case after the positioning and reversing device is reversed to the baking tray for placement.

[0011] Furthermore, the feed transfer device includes a feed transfer module and a cooling and conveying module, the feed transfer module includes a feed Y-axis module, a feed Z-axis module installed on the feed Y-axis module, and a feed clamping assembly installed on the bottom end of the feed Z-axis module, the feed clamping assembly includes a feed jaw, left and right clamping cylinders for driving the feed jaw to move horizontally, and upper and lower driving cylinders for driving the feed jaw to move longitudinally, and the feed jaw is provided with an identification sensor for identifying the size of the watch back case.

[0012] Furthermore, the cooling and conveying module includes a double-speed chain for conveying the cleaning rack, the double-speed chain includes at least two cooling positions, and each cooling position is correspondingly provided with a feeding sensor, a blocking cylinder is provided between adjacent cooling positions, and a plurality of cooling fans are provided under the double-speed chain.

[0013] Furthermore, the positioning and reversing device includes a cleaning rack storage position and a positioning and reversing module. A cleaning rack positioning cylinder is provided corresponding to the cleaning rack storage position, and a material tray storage device is provided below the cleaning rack storage position. The positioning and reversing module includes a reversing shaft and a reversing motor for driving the reversing shaft to rotate. Two rows of positioning structures are respectively provided on both sides of the reversing shaft, and the two rows of positioning structures are respectively suitable for two sizes of watch back shells. The positioning structure includes a plurality of limit blocks arranged in sequence, and positioning half grooves are provided on both sides of each limit block. The watch back shell is inserted into two positioning half grooves adjacent to adjacent limit blocks to achieve positioning and fixation.

[0014] Furthermore, the material tray storage device includes a vertical frame, a lifting platform, and a loading and unloading platform. The vertical frame is provided with a longitudinal guide rail, and a lifting motor for driving the lifting platform to move up and down along the longitudinal track is provided at the bottom of the vertical frame. The loading and unloading platform is provided with a transverse guide rail, and a tray placing platform is slidably provided on the loading and unloading platform. A travel switch is provided at one end of the loading and unloading platform close to the vertical frame corresponding to the tray placing platform, and a spring locating pin is provided in the middle of the loading and unloading platform. The baking tray feeding device includes a baking tray feeding position, and the baking tray feeding position is equal to the number of baking tray specifications, and the material tray storage device is provided correspondingly below the baking tray feeding position.

[0015] Furthermore, the swing plate storage device includes a swing plate module, a stacking module, and a conveyor belt located below the swing plate module and the stacking module, and the swing plate module and the stacking module are arranged in sequence along the conveying direction of the conveyor belt.

[0016] Furthermore, the tray swing module includes a plurality of tray positioning blocks distributed on both sides of the conveyor belt, and a positioning block cylinder located below the tray positioning block for driving the tray positioning block to move up and down.

[0017] Furthermore, the stacking module includes two stacking structures that are symmetrically arranged on both sides of the conveyor belt, and the stacking structure includes a fixed plate, a lifting plate and a stacking cylinder. The stacking cylinder is fixed on the fixed plate, and the lifting plate is connected to the piston rod of the stacking cylinder. The bottom end of the lifting plate is provided with an elastic hook that can engage with the side of the baking tray. The elastic hook includes a hook and a spring. The hook is hinged and fixed, and the spring is horizontally arranged and pushes the top end of the hook toward the conveyor belt.

[0018] Furthermore, a dish placing hook consistent with the elastic hook structure is provided at the bottom end of the fixed plate, and the lifting plate is provided with a dish placing cylinder corresponding to the bottom end of the hooking part driving the dish placing hook to push out toward the conveyor belt direction, and the minimum distance between the dish placing hook and the elastic hook is less than the thickness of the baking tray.

[0019] Furthermore, the gantry transport mechanism includes a gantry X-axis module, a gantry Y-axis module installed on the gantry X-axis module, a gantry Z-axis module installed on the gantry Y-axis module, and a gantry clamping assembly installed on the gantry Z-axis module, and the gantry clamping assembly includes a material tray clamp for clamping a cleaning rack and a baking tray, a material clamp for clamping and fixing the back case of a watch, and a material suction cup for sucking the back case of the watch.

[0020] After adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0021] The automatic turntable machine for watch back cases of the present invention can realize the automatic transfer of the watch back cases from the cleaning rack to the baking tray, and can be used for the simultaneous transfer of watch back cases of two sizes, with accurate identification and transfer and high efficiency; it can realize automatic storage of the cleaning rack and the baking tray (placed in front and behind the watch back cases), effectively reducing material handling and improving efficiency, and can also automatically transport the baking tray for transferring the watch back cases to the loading end of the next screen printing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of the automatic turntable machine for the back case of a watch according to an embodiment of the present invention;

[0023] Figure 2 A three-dimensional view of the automatic dial machine for the back case of a watch according to an embodiment of the present invention from another perspective;

[0024] Figure 3 This is a three-dimensional diagram of a feeding and transferring module of an automatic turntable machine for watch back shells according to an embodiment of the present invention;

[0025] Figure 4 A three-dimensional diagram of a cooling and conveying module of an automatic turntable machine for a watch back case according to an embodiment of the present invention;

[0026] Figure 5 A three-dimensional diagram of a positioning and reversing module of an automatic turntable machine for a watch back cover according to an embodiment of the present invention;

[0027] Figure 6 This is a three-dimensional diagram of a material tray storage device of an automatic turntable machine for watch back cases according to an embodiment of the present invention, and the diagram shows a material tray storage device corresponding to a storage position of a cleaning rack;

[0028] Figure 7 It is a three-dimensional diagram of the second unit of the automatic rotating disk storage device for the back cover of a watch according to an embodiment of the present invention;

[0029] Figure 8 for Figure 7Enlarged schematic diagram of the middle stacking module;

[0030] Fig. 9 for Figure 7 Another enlarged view of the middle stacking module;

[0031] Fig.10 A three-dimensional diagram of the gantry transport mechanism of the automatic turntable machine for the back case of a watch according to an embodiment of the present invention;

[0032] Fig.11 for Fig.10 Enlarged diagram of the center gantry clamping assembly.

[0033] Description of reference numerals:

[0034] 10- Material feeding and transferring device,

[0035] 11-feeding transfer module, 111-feeding Y-axis module, 112-feeding Z-axis module, 113-feeding clamping claw, 114-left and right clamping cylinder, 115-up and down driving cylinder,

[0036] 12-Cooling conveying module, 121-speed chain, 122-feeding sensor, 123-blocking cylinder, 124-cooling fan,

[0037] 20- Positioning reversing device,

[0038] 21-cleaning rack storage position, 211-cleaning rack positioning cylinder,

[0039] 22-positioning reversing module, 221-reversing shaft, 222-reversing motor, 223-limiting block, 224-positioning half slot, 225-positioning cylinder,

[0040] 30-Baking tray feeding device,

[0041] 40-Plate storage device,

[0042] 41-swing plate module, 411-tray positioning block, 412-positioning block cylinder,

[0043] 42-stacking module, 421-fixed plate, 422-lifting plate, 423-stacking cylinder, 424-elastic hook, 425-disk placing hook, 426-disk placing cylinder,

[0044] 43-Conveyor belt,

[0045] 50-Gantry handling mechanism,

[0046] 51-gantry X-axis module, 52-gantry Y-axis module, 53-gantry Z-axis module, 54-gantry clamping assembly, 55-material tray clamp, 56-material clamp, 57-material suction cup,

[0047] 60-Tray storage device,

[0048] 61-stand, 62-lifting platform, 63-loading and unloading platform, 64-disk placing platform, 65-travel switch, 66-lifting motor, 67-spring positioning pin. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0050] It should be noted that in the present invention, the terms "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element of the present invention must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] Example

[0052] Cooperate Figures 1 to 11 As shown, the present invention discloses an automatic watch back case turntable machine, which is used to transfer the watch back cases on the cleaning rack after ultrasonic cleaning to the silk screen baking plate, and can be used to transfer watch back cases of two sizes (large and small) at the same time. It includes a working platform and a control system for controlling the movement of the entire machine. The relevant devices of the entire machine are arranged on the working platform, and for safe production, an upper housing is also arranged on the working platform to enclose the working platform.

[0053] The device arranged on the working platform specifically includes:

[0054] The material feeding and transferring device 10 transfers the cleaning rack loaded with the watch back shell to the turntable machine and cools it;

[0055] The positioning and reversing device 20 is used to position the back case of the watch and change its direction, and to recover and store the cleaning rack at the same time. The back case of the watch is in an upright state when placed on the cleaning rack, but the back case of the watch needs to be placed horizontally in the baking tray, so the back case of the watch needs to be reversed from the upright state to the horizontal state;

[0056] A baking tray feeding device 30 stores and provides baking trays suitable for watch back cases of different sizes;

[0057] A tray storage device 40, used to place a baking tray for placing the watch back case and store the baking tray after placement;

[0058] The gantry transport mechanism 50 is used to transport the cleaning rack from the feeding and transferring device 10 to the positioning and reversing device 20, transport the baking tray to the tray storage device 40, transport the watch back case to the positioning and reversing device 20 and transport the watch back case after the positioning and reversing device 20 is reversed to the baking tray for placement.

[0059] Among them, the material feeding and transferring device 10 is connected to the ultrasonic cleaning equipment of the watch back case, and the material feeding and transferring device 10 and the positioning and reversing device 20 are located on one side of the working platform, the baking tray feeding device 30 and the plate storage device 40 are located on the other side of the working platform, and the gantry transport mechanism 50 is erected on the working platform.

[0060] Cooperate Figures 1 to 4 As shown, the feed transfer device 10 includes a feed transfer module 11 and a cooling and conveying module 12, the feed transfer module includes a feed Y-axis module 111, a feed Z-axis module 112 installed on the feed Y-axis module 111, and a feed clamping assembly installed on the bottom end of the feed Z-axis module 112, the feed clamping assembly includes a feed jaw 113, left and right clamping cylinders 114 for driving the feed jaw 113 to move horizontally, and an upper and lower driving cylinder 115 for driving the feed jaw 113 to move longitudinally, and the feed jaw 113 is provided with an identification sensor for identifying the size of the watch back case.

[0061] The cooling and conveying module 12 includes a speed chain 121 for conveying the cleaning rack, the speed chain 121 includes at least two cooling positions, and each cooling position is correspondingly provided with a feeding sensor 122, a blocking cylinder 123 is provided between adjacent cooling positions, and a plurality of cooling fans 124 are provided below the speed chain 121. In this embodiment, the number of cooling positions on the speed chain 121 is two. The cooling fan 124 is used to cool the back case of the watch on the cleaning rack.

[0062] Among them, the feeding and transferring module 11 is connected to the output end of the ultrasonic cleaning equipment for the back shell of the watch, and the feeding Y-axis module 111 drives the feeding clamping assembly to reciprocate between the output end of the ultrasonic cleaning equipment and the input end of the double-speed chain 121 to realize the transportation of the cleaning rack loaded with the back shell of the watch. At the output end of the ultrasonic cleaning equipment, the feeding Z-axis module 112, the left and right clamping cylinders 114, and the upper and lower driving cylinders 115 are operated to make the feeding clamping claws 113 clamp the cleaning rack loaded with the back shell of the watch. At the input end of the double-speed chain 121, the feeding Z-axis module 112, the left and right clamping cylinders 114, and the upper and lower driving cylinders 115 are operated to place the cleaning rack loaded with the back shell of the watch on the double-speed chain 121. The identification sensor on the feeding clamping claw 113 identifies the specifications of the back shell of the watch on the cleaning rack clamped by the feeding clamping claw 113, whether it is a large or small model, so as to facilitate the subsequent operation of the corresponding specification device.

[0063] The input end of the double-speed chain 121 corresponds to a cooling position, and the feed sensor 122 corresponding to the cooling position senses that the cleaning rack is in place. When both cooling positions have cleaning racks, the blocking cylinder 123 extends upward to prevent the cleaning rack at the input cooling position from entering the output cooling position. When the output cooling position is cooled and enters the positioning reversing device 20, the blocking cylinder 123 retracts downward, and the cleaning rack at the input cooling position enters the output cooling position through the double-speed chain 121, and the feed sensor 122 corresponding to the cooling position senses that the cleaning rack is in place. The feed sensor 122 is used to sense the time when the cleaning rack is in place, which makes it easy to control the cooling time.

[0064] Cooperate Figure 1 to Figure 2 , Figures 4 to 6 As shown, the positioning and reversing device 20 includes a cleaning rack storage position 21 and a positioning and reversing module 22. The positioning and reversing device 20 is located on one side of the output end of the speed chain 121. A cleaning rack positioning cylinder 211 and a lifting and lowering sensor are provided corresponding to the cleaning rack storage position 21, and a tray storage device is provided below the cleaning rack storage position 21. The finger angle of the positioning cylinder 225 is 90 degrees, corresponding to the adjacent side of the cleaning rack, and a positioning cylinder 225 is provided at both ends of the diagonal of the cleaning rack, so that the cleaning rack can be effectively ensured to be accurately in place.

[0065] The positioning and reversing module 22 is located on the side of the cleaning rack storage position 21 opposite to the speed chain 121. The positioning and reversing module 22 includes a reversing shaft 221 and a reversing motor 222 for driving the reversing shaft 221 to rotate. Two rows of positioning structures are respectively provided on both sides of the reversing shaft 221, and the two rows of positioning structures are respectively suitable for watch back shells of two sizes. The positioning structure includes a plurality of limit blocks 223 arranged in sequence, and both sides of each limit block 223 are provided with positioning half grooves 224. The watch back shell is inserted into two positioning half grooves 224 adjacent to the adjacent limit blocks 223 to achieve positioning and fixing. That is, the two positioning half grooves 224 between the adjacent limit blocks 223 form a positioning groove corresponding to a watch back shell. Specifically, a longitudinally arranged limit rib is provided in the middle of the outer side surface of the limit block 223, and a limit plate is provided at the lower part of the outer side surface of the limit block 223, and the limit plate and the limit rib separate the two positioning half grooves 224. Furthermore, the limit block 223 is movably arranged on the rod, and a positioning structure is also provided with a positioning cylinder 225 (two in total), and the piston rod of the positioning cylinder 225 is connected to the limit block 223 at the head end or the tail end. The positioning cylinder 225 ensures that the spacing between the limit blocks 223 is maintained at a certain value, thereby ensuring that the back shell of the watch can be smoothly inserted and removed without falling off.

[0066] The gantry clamping assembly 54 of the gantry transport mechanism 50 moves to the output end of the double-speed chain 121, clamps the cleaning rack through the cleaning rack clamping claw and transfers it to the cleaning rack storage position 21. The cleaning rack positioning cylinder 211 is located on the side of the cleaning rack storage position 21. The cleaning rack positioning cylinder 211 moves to calibrate the cleaning rack position so that it is accurately in place. After that, the material clamping claw 56 of the gantry clamping assembly 54 clamps the watch back shell on the cleaning rack and inserts it into the positioning groove. At the same time, in order to facilitate the insertion of the watch back shell, the reversing motor 222 drives the reversing shaft 221 to rotate, so that the angle between the positioning groove and the horizontal line is 75 degrees. After the insertion of the watch back shell is completed, the reversing motor 222 drives the reversing shaft 221 to rotate, so that the positioning groove turns to the horizontal direction, and the watch back shell also becomes horizontal. Among them, the number of watch back shells clamped by the material clamping claw 56 is equal to the number of positioning grooves, and according to the specification information of the watch back shell identified at the feeding and transferring device 10, the watch back shell is inserted into the corresponding row of positioning structures.

[0067] Cooperate Figure 1 to Figure 2 , Figure 6 As shown, the tray storage device 60 includes a stand 61, a lifting platform 62, and a loading and unloading platform 63. The stand 61 is provided with a longitudinal guide rail, and a lifting motor 66 is provided at the bottom of the stand 61 to drive the lifting platform 62 to move up and down along the longitudinal track. The loading and unloading platform 63 is provided with a transverse guide rail, and a tray placing platform 64 is slidably provided on the loading and unloading platform 63. A travel switch 65 is provided at one end of the loading and unloading platform 63 close to the stand 61 corresponding to the tray placing platform 64, and a spring positioning pin 67 is provided in the middle of the loading and unloading platform.

[0068] Among them, the tray storage device 60 in the positioning and reversing device 20 has a tray placement platform 64 correspondingly located directly below the cleaning rack storage position 21. After the cleaning rack is placed in the cleaning rack storage position 21, it is exactly located on the lifting platform 62. When the back shells of the watches on the cleaning rack are removed, the lifting motor 66 drives the lifting platform 62 to descend with the cleaning rack, and the descending height is equal to the thickness of the cleaning rack. The next one loaded with watches is directly placed on the previous cleaning rack. When the lifting platform 62 descends to the tray placement platform 64, the cleaning rack falls onto the tray placement platform 64 accordingly. The worker pulls out the spring positioning pin 67, and moves the empty first-base cleaning rack out of the lifting platform 62 on the loading and unloading platform 63 through the tray placement platform 64, and finally unloads it from the tray placement platform 64. After that, the empty tray placing platform 64 is pushed to the stand 61 in place, the spring positioning pin 67 is inserted, and after the travel switch 65 senses that the tray placing platform 64 is in place, the price raising motor drives the lifting platform 62 to rise to the cleaning rack storage position 21, and the next cleaning rack is put in, and the cycle continues.

[0069] Cooperate Figure 1 to Figure 2 , Figure 6As shown, the baking tray feeding device 30 includes a baking tray feeding position, and the baking tray feeding position is equal to the number of baking tray specifications and types. A lifting position sensor is provided on one side of the baking tray feeding device 30, and the tray storage device 60 is provided below the baking tray feeding position. In this embodiment, two baking tray feeding positions are provided corresponding to the back shells of large and small watches. The principle of the tray storage device 60 here is basically similar to the working principle of the tray storage device 60 below the storage position 21 of the cleaning rack, except that the tray placing platform 64 with empty baking trays is manually pushed onto the lifting platform 62. When the uppermost baking tray is removed by the gantry transport mechanism 50, the lifting motor 66 drives the lifting platform 62 to move upward by the thickness of a baking tray until all baking trays on the tray placing platform 64 are removed, and the lifting platform 62 returns to the initial position, and the empty baking tray is manually placed on the lifting platform 62, and the cycle continues.

[0070] Cooperate Figure 1 to Figure 2 , Figures 6 to 9 As shown, in this embodiment, the wobble tray storage device 40 includes two units for large and small items, and the structures of the two units are different. Of course, the two units can also be designed to be the same, which is not limited here. At the same time, the corresponding relationship between the two units and the large and small items can also be selected according to actual needs, which is not limited here.

[0071] The first unit of the tray storage device 40 includes a tray storage position, and a tray storage device 60 is set below the tray storage position, and a lifting position sensor is set on one side of the tray storage position, so that a baking tray can be placed for the watch back shell to be placed and a certain amount of baking trays after placement can be stored. The working principle of the tray storage device 60 here is basically the same as the working principle of the tray storage device 60 below the storage position 21 of the cleaning rack, and will not be repeated here. When the top baking tray is filled with watch back shells by the gantry conveying mechanism 50 (the material suction cup 57 of the gantry conveying mechanism 50 sucks the corresponding specification of watch back shells after reversing and puts them into the baking tray one by one), the lifting motor 66 drives the lifting platform 62 to descend by the thickness of a baking tray. When the lifting platform 62 descends to the tray placement platform 64, the baking tray is unloaded manually.

[0072] Cooperate Figures 7 to 9 As shown, the second unit of the swing plate storage device 40 includes a swing plate module 41, a stacking module 42, and a conveyor belt 43 located below the swing plate module 41 and the stacking module 42, and the swing plate module 41 and the stacking module 42 are arranged in sequence along the conveying direction of the conveyor belt 43.

[0073] The pan swing module 41 includes a plurality of tray positioning blocks 411 distributed on both sides of the conveyor belt, and a positioning block cylinder 412 located below the tray positioning block 411 to drive the tray positioning block 411 to move up and down. The positioning block cylinder 412 drives the tray positioning block 411 to move up and down so that its top end can be lower or higher than the conveyor belt 43.

[0074] The stacking module 42 includes two stacking structures that are symmetrically arranged on both sides of the conveyor belt 43, and the stacking structure includes a fixed plate 421, a lifting plate 422 and a stacking cylinder 423. The stacking cylinder 423 is fixed on the fixed plate 421, and the lifting plate 422 is connected to the piston rod of the stacking cylinder 423. The bottom end of the lifting plate 422 is provided with an elastic hook 424 that can be engaged with the side of the baking tray. The elastic hook 424 includes a hook and a spring. The hook is hinged and fixed. The spring is horizontally arranged and pushes the top of the hook toward the conveyor belt 43. That is, when the spring is in a natural state, the hook is inclined from bottom to top toward the conveyor belt 43.

[0075] The gantry transport mechanism 50 first places the empty baking tray on the tray positioning block 411. At this time, the bottom of the baking tray is separated from the transmission belt. The material suction cup 57 of the gantry transport mechanism 50 sucks the watch back shells of the corresponding specifications after the reversal and places them one by one in the baking tray. When a baking tray is completely filled with watch back shells, the positioning block cylinder 412 drives the tray positioning block 411 to drive the baking tray down until the baking tray falls on the transmission belt. The baking tray moves to the stacking module 42 under the action of the transmission belt. The tray positioning block 411 returns to the initial position under the action of the positioning block cylinder 412, waiting for the next empty baking tray to be placed.

[0076] The stacking cylinder 423 drives the lifting plate 422 to descend until the elastic hook 424 is located below the baking tray on the transmission belt. During this process, the top of the hook is squeezed by the edge of the baking tray so that the elastic hook 424 can smoothly reach the bottom of the baking tray, and when it is located below the baking tray, the top of the hook is pushed out in the direction of the transmission belt under the action of the spring. After that, the stacking cylinder 423 drives the lifting plate 422 to move upward, and the top of the hook is correspondingly engaged with the edge of the baking tray (the side of the baking tray is provided with a slot that cooperates with the hook), and the lifting plate 422 continues to rise, driving the baking tray to rise and detach from the transmission belt until space is made for the next baking tray. When the next baking tray filled with watch back shells moves to the stacking module 42, the stacking structure repeats the above action to stack the baking tray below the previous baking tray, and the cycle continues.

[0077] When the stacking module 42 stacks a certain number of baking trays, the stacking module 42 unloads the trays manually or connects the conveyor belt to the next screen printing device. The control system controls the stacking module 42 and the screen printing device at the same time. When the screen printing device needs to load baking trays, the stacking module 42 puts the lowest baking tray on the conveyor belt and transports it to the feeding end of the screen printing device through the conveyor belt.

[0078] Specifically, the bottom end of the fixed plate 421 is provided with a dish placing hook 425 which is consistent with the structure of the elastic hook 424, and the lifting plate 422 is provided with a dish placing cylinder 426 (all of which are diaphragm cylinders) which pushes the bottom end of the engaging part of the dish placing hook 425 toward the conveyor belt 43, and the minimum distance between the dish placing hook 425 and the elastic hook 424 is less than the thickness of the baking tray. The tray placing cylinder 426 drives the bottom end of the hooking piece of the tray placing hook 425 to push out toward the conveyor belt 43, and the top end of the hooking piece shrinks inward, and then the stacking cylinder 423 drives the lifting plate 422 to descend, and the baking tray and the tray placing cylinder 426, which are fixed by the elastic hook 424, are also lowered. When the tray placing cylinder 426 is lowered to the bottom of the tray placing hook 425, the top end of the hooking piece of the tray placing hook 425 is pushed out by the spring, and at this time, it just engages with the second to last baking tray at the bottom, and the bottom baking tray has been placed on the conveyor belt. In this way, it can be ensured that the stacking structure places only one baking tray on the conveyor belt at a time, and is processed with subsequent silk screen printing.

[0079] Cooperate Figure 1 to Figure 2 , Figure 10 to Figure 11 As shown, the gantry transport mechanism 50 includes a gantry X-axis module 51, a gantry Y-axis module 52 installed on the gantry X-axis module 51, a gantry Z-axis module 53 installed on the gantry Y-axis module 52, and a gantry clamping assembly 54 installed on the gantry Z-axis module 53. The gantry clamping assembly 54 includes a material tray clamping jaw 55 for clamping the cleaning rack and the baking tray, a material clamping jaw 56 for clamping and fixing the back shell of the watch, and a material suction cup 57 for sucking the back shell of the watch. Among them, the structure and working principle of the material tray clamping jaw 55, the material clamping jaw 56, and the material suction cup 57 are all conventional designs in the field, and will not be repeated here.

[0080] The working process of the automatic turntable machine for watch back shells is as follows: the feeding and transferring module 11 transfers the cleaning rack loaded with watch back shells to the cooling and conveying module 12, and at the same time identifies the specifications of the watch back shells on the cleaning rack; the cooling and conveying module 12 cools the watch back shells on the cleaning rack, and then the gantry conveying mechanism 50 conveys them to the positioning and reversing device 20, and the positioning and reversing device 20 converts the upright position of the watch back shells into a horizontal position while realizing the recycling and storage of the empty cleaning racks. After the reversal, the watch back shells are conveyed by the gantry conveying mechanism 50 to the corresponding baking trays on the plate storage device 40 and placed one by one. Among them, the baking trays on the plate storage device 40 are conveyed by the gantry conveying mechanism 50 from the baking tray feeding device 30 to the corresponding module of the plate storage device 40. The plate storage device 40 stores the baking trays after the watch back shells are placed, or can convey the baking trays to the feeding end of the next screen printing device at the same time.

[0081] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A watch back cover automatic turntable machine, characterized in that: include: The feeding and transferring device transfers the cleaning rack loaded with the watch back shells to the turntable machine and cools it; Positioning and reversing device, used to position the back case of the watch and change its direction, while recovering and storing the cleaning rack; The baking tray feeding device stores and provides baking trays suitable for watch back cases of different sizes; A tray storage device is used to place baking trays for the watch back cases and store the baking trays after they are placed; The gantry transport mechanism is used to transport the cleaning rack from the feeding and transferring device to the positioning and reversing device, transport the baking tray to the tray storage device, transport the watch back case to the positioning and reversing device, and transport the watch back case after the positioning and reversing device is reversed to the baking tray for placement; The feeding and transferring device comprises a feeding and transferring module and a cooling and conveying module, the feeding and transferring module comprises a feeding Y-axis module, a feeding Z-axis module installed on the feeding Y-axis module, and a feeding clamping assembly installed on the bottom end of the feeding Z-axis module, the feeding clamping assembly comprises a feeding jaw, left and right clamping cylinders driving the feeding jaw to move horizontally, and upper and lower driving cylinders driving the feeding jaw to move longitudinally, and the feeding jaw is provided with an identification sensor for identifying the size of the watch back case; The cooling and conveying module includes a double-speed chain for conveying the cleaning rack, the double-speed chain includes at least two cooling positions, and each cooling position is correspondingly provided with a feeding sensor, and a blocking cylinder is provided between adjacent cooling positions, and a plurality of cooling fans are provided under the double-speed chain; The positioning and reversing device comprises a cleaning rack storage position and a positioning and reversing module. A cleaning rack positioning cylinder is provided corresponding to the cleaning rack storage position, and a material tray storage device is provided below the cleaning rack storage position. The positioning and reversing module comprises a reversing shaft and a reversing motor for driving the reversing shaft to rotate. Two rows of positioning structures are respectively provided on both sides of the reversing shaft, and the two rows of positioning structures are respectively suitable for two sizes of watch back shells. The positioning structure comprises a plurality of limit blocks arranged in sequence, and both sides of each limit block are provided with positioning half grooves. The watch back The shell is inserted into the two positioning half-grooves close to the adjacent limit blocks to achieve positioning and fixing. The two positioning half-grooves between the adjacent limit blocks form a positioning groove corresponding to a watch back shell. The material clamping claws of the gantry clamping assembly clamp the watch back shell on the cleaning rack and insert it into the positioning groove. At the same time, in order to facilitate the insertion of the watch back shell, the reversing motor drives the reversing shaft to rotate so that the angle between the positioning groove and the horizontal line is 75 degrees. After the insertion of the watch back shell is completed, the reversing motor drives the reversing shaft to rotate so that the positioning groove rotates to the horizontal direction, and the watch back shell also becomes horizontal.

2. The automatic watch back case turntable machine according to claim 1, characterized in that: The material tray storage device includes a vertical frame, a lifting platform, and a loading and unloading platform. The vertical frame is provided with a longitudinal guide rail, and a lifting motor for driving the lifting platform to move up and down along the longitudinal track is provided at the bottom of the vertical frame. The loading and unloading platform is provided with a transverse guide rail, and a tray placing platform is slidably provided on the loading and unloading platform. A travel switch is provided at one end of the loading and unloading platform close to the vertical frame corresponding to the tray placing platform, and a spring locating pin is provided in the middle of the loading and unloading platform. The baking tray feeding device includes a baking tray feeding position, and the baking tray feeding position is equal to the number of baking tray specifications and types, and the material tray storage device is provided correspondingly below the baking tray feeding position.

3. The automatic watch back case turntable machine according to claim 1, characterized in that: The swing plate storage device comprises a swing plate module, a stacking module, and a conveyor belt located below the swing plate module and the stacking module, and the swing plate module and the stacking module are arranged in sequence along the conveying direction of the conveyor belt.

4. The automatic watch back case turntable machine as claimed in claim 3, characterized in that: The swing plate module comprises a plurality of tray positioning blocks distributed on both sides of the conveyor belt, and a positioning block cylinder located below the tray positioning blocks and driving the tray positioning blocks to move up and down.

5. A watch back cover automatic turntable machine as claimed in claim 3 or 4, characterized in that: The stacking module includes two stacking structures which are symmetrically arranged on both sides of the conveyor belt, and the stacking structure includes a fixed plate, a lifting plate and a stacking cylinder. The stacking cylinder is fixed on the fixed plate, and the lifting plate is connected to the piston rod of the stacking cylinder. The bottom end of the lifting plate is provided with an elastic hook which can be engaged with the side of the baking tray. The elastic hook includes a hook and a spring. The hook is hinged and fixed. The spring is horizontally arranged and pushes the top end of the hook toward the conveyor belt.

6. The automatic watch back case turning machine according to claim 1, characterized in that: The gantry transport mechanism includes a gantry X-axis module, a gantry Y-axis module installed on the gantry X-axis module, a gantry Z-axis module installed on the gantry Y-axis module, and a gantry clamping assembly installed on the gantry Z-axis module. The gantry clamping assembly includes a material tray clamp for clamping a cleaning rack and a baking tray, a material clamp for clamping and fixing the back case of a watch, and a material suction cup for sucking the back case of the watch.

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