Quartz watch two-color pad printing machine

Abstract

The invention relates to the field of pad printing equipment, and provides a quartz watch double-color pad printing machine which comprises a machine table structure which is used for bearing the whole equipment. The machine table structure is provided with a feeding mechanism, a printing mechanism, a first suction cup mechanical arm, a switching mechanism and a second suction cup mechanical arm. The switching mechanism is located in the center of the machine table structure, and a plurality of bearing stations are arranged in the circumferential direction and used for bearing inner discs. The receiving station rotates along a fixed circumferential path along with the switching mechanism; the first suction cup mechanical arm and the feeding mechanism are both located on one side of the switching mechanism, the feeding mechanism is used for storing unprinted inner discs, the conveying path of the first suction cup mechanical arm is located between the feeding mechanism and the switching mechanism, and the inner discs are sucked and placed on the bearing station. The printing device has the effect of providing accurate and clear printing pattern positions.

Description

Technical Field

[0001] This application relates to the field of pad printing equipment, and in particular to a two-color pad printing machine for quartz watches. Background Technology

[0002] The dial markings and trademark information are printed or engraved on the inner dial. Some watches, such as quartz watches, use a separate inner dial. The markings or trademark information are printed on the surface of the inner dial before the inner dial is installed into the watch case. Therefore, a pad printing machine is needed to move and transport the inner dial and print the information.

[0003] Because some inner discs need to have different patterns printed on their surfaces, such as one set of product information and one set of scale information, the existing structure uses two different printing mechanisms for printing. The positions of the two types of printed patterns are difficult to be precise, making it impossible to ensure the clarity and consistency of the printed patterns. This results in an increase in defective products and makes it easy for them to be mixed in with qualified products, affecting subsequent assembly. Summary of the Invention

[0004] To address the aforementioned problems, this application provides a quartz watch two-color pad printing machine.

[0005] The quartz watch two-color pad printing machine provided in this application adopts the following technical solution: A two-color pad printing machine for quartz watches includes a machine base structure. The machine base structure is equipped with a feeding mechanism, a printing mechanism, a first suction cup robot, a switching mechanism, and a second suction cup robot. The switching mechanism is located at the center of the machine base structure and has several receiving stations along its circumference for receiving inner discs. The receiving stations rotate along a fixed circumferential path following the switching mechanism. The first suction cup robot and the feeding mechanism are both located on one side of the switching mechanism. The feeding mechanism provides storage for unprinted inner discs. The conveying path of the first suction cup robot is between the feeding mechanism and the switching mechanism, adsorbing and placing the inner discs at the receiving stations. The printing mechanism has two sets of printing ends, each set corresponding to one receiving station. The switching mechanism conveys the inner discs from the receiving stations to the printing ends, and the two sets of printing ends print on the inner discs respectively. The second suction cup robot is located on the other side of the switching mechanism and is used to adsorb and convey the printed inner discs.

[0006] By adopting the above technical solution, when printing inner discs is required, the unprinted inner discs are placed on the feeding mechanism. The first suction cup robot picks up the inner discs one by one from the feeding mechanism and transfers them to the switching mechanism. The switching mechanism rotates the receiving station of the inner discs by a fixed angle in the circumferential direction to switch positions. Therefore, after the fixed angle is accurately switched to directly below the printing end, the printing mechanism accurately prints the inner discs within the printing range through two sets of printing ends, thereby ensuring the accuracy and clarity of the printed pattern. After printing, the switching mechanism continues to rotate and switch the receiving station until it is within the suction range of the second suction cup robot. The second suction cup robot picks up the printed inner discs and removes them from the receiving station for collection.

[0007] Optionally, the feeding mechanism includes a feeding platform, a feeding turntable, a feeding drive, and a feeding pusher; the feeding platform is disposed on the machine base structure; the feeding drive is installed on the feeding platform, the feeding turntable is connected to the feeding drive and is driven to rotate by the feeding drive; the feeding turntable is provided with a plurality of feeding cylinders, the inside of the feeding cylinders is used to store unprinted inner discs; the feeding pusher is installed on the feeding platform, the bottom of the feeding cylinder has a feeding port, after the first suction cup robot picks up the inner disc corresponding to the surface of the feeding cylinder, the pushing end of the feeding pusher passes through the feeding port and pushes the inner disc towards the cylinder opening of the feeding cylinder.

[0008] By adopting the above technical solution, after the first suction cup robot arm adsorbs the inner disc on the top surface of the feeding cylinder, as the number of inner discs adsorbed decreases, the feeding pusher pushes the inner disc below the corresponding feeding cylinder to move towards the opening of the feeding cylinder. This ensures that the first suction cup robot arm can pick up the inner disc at the opening of the feeding cylinder each time. When all the inner discs in a single feeding cylinder have been picked up, the pushing end of the feeding pusher is pulled out from the feeding port, separating the feeding pusher from the feeding cylinder. The feeding drive can then drive the feeding turntable to rotate at a fixed angle, thereby rotating another set of feeding cylinders directly above the feeding pusher. The feeding pusher can then extend its pushing end through the feeding port to continue pushing the inner discs upward. This achieves stable picking up of inner discs and switching of feeding cylinders.

[0009] Optionally, the loading platform is further provided with a first light inspection piece, and the moving path of the first suction cup robot is increased to the path of moving to the first light inspection piece; the illumination detection path of the first light inspection piece is upward detection.

[0010] By adopting the above technical solution, after the first suction cup robot arm adsorbs the inner disc, it first moves to the first light inspection point for inspection to determine whether the first suction cup robot arm has an inner disc and whether the front and back of the inner disc are correct.

[0011] Optionally, the printing mechanism includes a printing table, a feeding table, a horizontal drive, a vertical drive, a first printing head, and a second printing head; the printing table is installed on the machine structure and has an inner recess; the feeding table is located within the inner recess and is divided into a first feeding table and a second feeding table, which are sequentially installed on both sides of the printing table; the horizontal drive is installed inside the printing table; the vertical drive is connected to the drive end of the horizontal drive; both the first printing head and the second printing head are connected to the vertical drive; the first printing head corresponds to the first feeding table below it, and the second printing head corresponds to the second feeding table below it, and the first printing head and the second printing head are driven by the horizontal drive and the vertical drive to move to the receiving station or to the corresponding feeding table.

[0012] By adopting the above technical solution, when the first printing head and the second printing head are driven by the vertical drive and the horizontal drive, they can print on the surface of the inner disc at the receiving station or move to the corresponding feeding station to add printing material. The ink or printing material on the surface of the feeding station is attached to the first printing head and the second printing head, so that a clear printing pattern can be obtained for each printing, avoiding the situation where the pattern is unclear due to insufficient printing material.

[0013] Optionally, the lateral drive component is further provided with a feeding rack, the bottom of which is provided with a cover plate, and a feeding component is embedded in the cover plate. The feeding component contains printing material, and when the feeding component moves with the lateral drive component, the printing material comes into contact with the feeding table.

[0014] By adopting the above technical solution, when the first printing head and the second printing head are printing on the inner disc at the receiving station, the cover plate covers the feeding table to prevent the printing material from evaporating. When the first printing head and the second printing head are driven back to the feeding table by the transverse drive, the cover plate opens the feeding table simultaneously. At the same time as it opens, the feeding component moves on the feeding table and attaches the printing material to the feeding table.

[0015] Optionally, the filling component includes a filling tube, a filling cover, a pressure plate, and a pressure driving unit; the filling tube is embedded in the cover plate, and printing material is stored in the filling tube; the filling cover is screwed to the filling tube, the pressure plate is located inside the filling tube and presses down on the printing material, and the pressure driving unit is installed on the filling cover and passes through the filling cover and is connected to the pressure plate inside the filling tube.

[0016] By adopting the above technical solution, after the printing material is placed in the feeding tube, the feeding cover is screwed on. Then, the pressure drive unit is activated, which drives the pressure plate to apply pressure to the printing material. This ensures that when the feeding tube moves with the cover plate under the drive of the lateral drive component, the printing material can be fully applied to the feeding table, ensuring that there is enough printing material on the feeding table.

[0017] Optionally, a pressure sensor is provided between the pressure plate and the pressure driving unit to detect the pressure provided by the pressure driving unit to the pressure plate.

[0018] By adopting the above technical solution, the pressure applied to the pressure plate by the pressure drive unit is adjusted based on the pressure data detected by the pressure sensor, so as to avoid the situation where the printing material is consumed too quickly due to excessive pressure, or the printing material cannot be fully applied to the feeding table due to insufficient pressure.

[0019] Optionally, a second light inspection component is also provided between the second suction cup robot and the printing mechanism, and the illumination detection path of the second light inspection component is top-view detection.

[0020] By adopting the above technical solution, the second light inspection piece mainly uses top-down inspection to check whether the pattern printed on the inner disc on the receiving station is clear and accurate, so as to provide a basis for screening qualified and unqualified products.

[0021] Optionally, a dust removal mechanism is also provided between the first suction cup robot and the printing mechanism.

[0022] By adopting the above technical solution, the dust removal mechanism is used to blow airflow on the inner disc at the receiving station after the first suction cup robot takes the inner disc from the feeding mechanism and places it at the receiving station, so as to remove the dust on the surface of the inner disc and ensure that the surface of the inner disc is clean and tidy during printing, resulting in better printing effect.

[0023] Optionally, the machine structure is further provided with several recycling structures, which are located within the adsorption range of the first suction cup robot and the adsorption range of the second suction cup robot.

[0024] By adopting the above technical solution, the recycling structure can be used to conveniently collect qualified or unqualified inner discs.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. When printing inner discs is required, the unprinted inner discs are placed on the feeding mechanism. The first suction cup robot picks up the inner discs one by one from the feeding mechanism and transfers them to the switching mechanism. The switching mechanism rotates the receiving station of the inner discs by a fixed angle in the circumferential direction to switch positions. Therefore, after the fixed angle is accurately switched to directly below the printing end, the printing mechanism accurately prints the inner discs within the printing range through two sets of printing ends, thereby ensuring the accuracy and clarity of the printed pattern. After printing, the switching mechanism continues to rotate and switch the receiving station until it is within the suction range of the second suction cup robot. The second suction cup robot picks up the printed inner discs and takes them out from the receiving station for collection. 2. After the first suction cup robot arm adsorbs the inner disc on the top surface of the feeding cylinder, as the number of inner discs adsorbed decreases, the feeding pusher pushes the inner disc below the corresponding feeding cylinder to move towards the opening of the feeding cylinder. This ensures that the first suction cup robot arm can pick up the inner disc at the opening of the feeding cylinder each time. When all the inner discs in a single feeding cylinder have been picked up, the pushing end of the feeding pusher is pulled out from the feeding port, separating the feeding pusher from the feeding cylinder. The feeding drive can then drive the feeding turntable to rotate at a fixed angle, thereby rotating another set of feeding cylinders directly above the feeding pusher. The feeding pusher can then extend its pushing end through the feeding port to continue pushing the inner discs upward. This achieves stable picking up of inner discs and switching of feeding cylinders. 3. After the first suction cup robot arm picks up the inner disc, it moves to the first light inspection point to check whether the first suction cup robot arm has the inner disc and whether the front and back of the inner disc are correct. 4. When the first and second printing heads are driven by the vertical and horizontal drive components, they can print on the surface of the inner disc at the receiving station or move to the corresponding feeding table to add printing material. The ink or printing material on the surface of the feeding table is attached to the first and second printing heads, so that a clear printing pattern can be obtained for each printing, avoiding the situation where the pattern is unclear due to insufficient printing material. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a first three-dimensional structure of a pad printing machine in one embodiment of this application; Figure 2 This is a first three-dimensional structural schematic diagram of the feeding mechanism in some embodiments of this application; Figure 3 This is a schematic diagram of a second three-dimensional structure of the feeding mechanism in some embodiments of this application; Figure 4 This is a schematic diagram of the first three-dimensional structure of the printing mechanism in some embodiments of this application; Figure 5 This is a schematic diagram of the first cross-sectional structure of the printing mechanism in the side view direction in some embodiments of this application; Figure 6 This is a schematic diagram of a second three-dimensional structure of the printing mechanism in some embodiments of this application; Figure 7 This is a schematic diagram of a second cross-sectional structure of the printing mechanism in a side view direction in some embodiments of this application; Figure 8 This is a schematic diagram of the cross-sectional structure of the filler in some embodiments of this application; Figure 9 This is a schematic diagram of a second three-dimensional structure of a pad printing machine in some embodiments of this application; The labels in the attached diagram are as follows: 1. Machine structure; 2. Feeding mechanism; 21. Feeding platform; 22. Feeding turntable; 221. Feeding cylinder; 23. Feeding drive component; 24. Feeding push component; 25. First light inspection component; 3. Printing mechanism; 31. Printing table; 311. Inner notch; 32. Feeding platform; 33. Horizontal drive component; 34. Vertical drive component; 35. First printing head; 36. Second printing head; 37. Feeding rack; 38. Cover plate; 39. Feeding component; 391. Feeding tube; 392. Feeding cover; 393. Pressure plate; 394. Pressure drive unit; 395. Pressure sensor; 4. First suction cup robot; 5. Switching mechanism; 51. Receiving station; 6. Second suction cup robot; 61. Second light inspection component; 7. Dust removal mechanism; 8. Recycling mechanism. Detailed Implementation

[0027] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand other advantages and effects of this application from the information disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0028] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.

[0029] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.

[0030] Furthermore, the terms "first" and "second" are used only to indicate an objective and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0032] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 This application will be described in further detail below.

[0033] This application discloses a quartz watch two-color pad printing machine.

[0034] A two-color pad printing machine for quartz watches, reference Figure 1 As shown, it includes a machine base structure 1, which provides support for the entire equipment. A controller can be installed on the machine base structure 1 to provide automated numerical control technology and improve the automated printing process.

[0035] The machine structure 1 is equipped with a feeding mechanism 2, a first suction cup robot 4, a printing mechanism 3, a switching mechanism 5, and a second suction cup robot 6. The switching mechanism 5 is located at the center of the machine structure 1 and has several receiving stations 51 along the circumference for receiving inner discs and rotating along a fixed circumferential path. The switching mechanism 5 includes a switching turntable, a switching drive, and receiving stations 51. The switching drive can be a stepper motor. The switching drive is installed inside the machine structure 1 and extends its drive end to connect with the switching turntable, driving the switching turntable to rotate. The receiving stations 51 are set on the top surface of the switching turntable. The number of receiving stations 51 can be set according to requirements. For example, if six are set, the switching drive will drive the switching turntable to rotate 60° each time, so that the receiving stations 51 can accurately follow the rotation to the next receiving station 51.

[0036] The receiving station 51 may include a receiving platform and a receiving suction cup. The receiving suction cup is installed on the receiving platform and has a receiving groove for placing the inner disc. After placement, the receiving suction cup sucks air to adsorb the inner disc into the receiving groove of the receiving suction cup, thereby preventing the inner disc from being lost or falling off during the printing process.

[0037] The first suction cup robot 4 and the feeding mechanism 2 are both located on one side of the switching mechanism 5. The feeding mechanism 2 provides storage for unprinted inner discs. The conveying path of the first suction cup robot 4 is between the feeding mechanism 2 and the switching mechanism 5. The first suction cup robot 4 can adsorb the inner discs on the feeding mechanism 2 by controlling the airflow and convey them to the receiving station 51 within the transmission range. After the suction is turned off, the inner discs are placed in the receiving station 51, and the receiving suction cup on the receiving station 51 then adsorbs the inner discs.

[0038] The printing mechanism 3 has two sets of printing ends, each set of printing ends corresponding to a receiving station 51. The bottom surface of the printing end is engraved with the pattern to be printed. The printing end can be located above the receiving station 51. When the receiving station 51 is rotated to a set of printing ends by the switching mechanism 5, it can descend through the printing end to contact the inner plate in the receiving station 51 and print the pattern onto the inner plate. Then the switching mechanism 5 continues to rotate and transport the inner plate on the receiving station 51 to the next printing end. After the two sets of printing ends have printed on the inner plate respectively, the switching mechanism 5 rotates the inner plate toward the second suction cup robot 6.

[0039] The second suction cup robot 6 is located on the other side of the switching mechanism 5. It is used to pick up and transport the printed inner discs. A recycling basket or recycling conveyor belt can be set within the conveying range of the second suction cup robot 6. The second suction cup robot 6 can pick up the inner discs on the receiving station 51 and transport them to the recycling basket or recycling conveyor belt for unified recycling.

[0040] Specifically, when printing inner discs is required, unprinted inner discs are placed on the feeding mechanism 2. The first suction cup robot 4 picks up the inner discs one by one from the feeding mechanism 2 and transfers them to the switching mechanism 5. The switching mechanism 5 rotates the receiving station 51 of the inner discs in a circumferential direction by a fixed angle to switch positions. Therefore, after the fixed angle is accurately switched to directly below the printing end, the printing mechanism 3 accurately prints the inner discs within the printing range through two sets of printing ends, thereby ensuring the accuracy and clarity of the printed pattern. After printing, the switching mechanism 5 continues to rotate and switch the receiving station 51 until it is within the suction range of the second suction cup robot 6. The second suction cup robot 6 picks up the printed inner discs and removes them from the receiving station 51 for collection.

[0041] Furthermore, the feeding mechanism 2 includes a feeding platform 21, a feeding turntable 22, a feeding drive component 23, and a feeding push component 24. The feeding platform 21 is set on the machine base structure 1. The bottom of the feeding platform 21 is hollow and is provided with a support rod for support. The feeding drive component 23 is installed on the feeding platform 21. The feeding drive component 23 can be a feeding motor. If there is interference in the position, it can be set in a staggered manner and the power is transmitted by a sprocket structure. The feeding turntable 22 is connected to the feeding drive component 23, so that the feeding turntable 22 can rotate when driven by the feeding drive component 23.

[0042] The feeding turntable 22 is provided with several feeding cylinders 221. The feeding cylinders 221 are used to store unprinted inner discs. The feeding cylinders 221 are arranged along the outer ring of the circumference of the feeding turntable 22. Each feeding cylinder 221 is spaced at a preset angle, so that the feeding turntable 22 can be rotated by a preset angle to switch the feeding cylinders 221. The inner discs are stored in the feeding cylinders 221 to provide adsorption for the first suction cup robot arm 4.

[0043] The feeding pusher 24 is installed on the feeding platform 21. The bottom of the feeding cylinder 221 has a feeding port (not shown in the figure). The feeding pusher 24 can be a feeding electric push rod, and the pushing end of the feeding electric push rod is provided with a pushing rod. After the first suction cup robot 4 picks up the inner disc corresponding to the surface of the feeding cylinder 221, the pushing end of the feeding pusher 24 passes through the feeding port and pushes the inner disc to the cylinder opening of the feeding cylinder 221.

[0044] As the inner disc is continuously adsorbed and the number of inner discs decreases, the lower inner disc gradually reaches the bottom of the feeding cylinder 221. The first suction cup robot 4 cannot adsorb the inner disc. Therefore, the feeding pusher 24 pushes the lower inner disc through the feeding port to the opening of the feeding cylinder 221, so that the inner disc can be stably adsorbed by the first suction cup robot 4.

[0045] Specifically, after the first suction cup robot 4 adsorbs the inner disc on the top surface of the feeding cylinder 221, the feeding pusher 24 pushes the inner disc below the corresponding feeding cylinder 221 to move towards the opening of the feeding cylinder 221. This ensures that as the number of inner discs adsorbed decreases, it does not affect the picking up by the first suction cup robot 4. When all the inner discs in a single feeding cylinder 221 have been picked up, the pushing end of the feeding pusher 24 is pulled out from the feeding port, separating the feeding pusher 24 from the feeding cylinder 221. The feeding drive 23 can then drive the feeding turntable 22 to rotate at a fixed angle, thereby rotating another set of feeding cylinders 221 directly above the feeding pusher 24. The feeding pusher 24 can then extend its pushing end through the feeding port to continue pushing the inner discs upward. This achieves stable picking up of the inner discs and switching between the feeding cylinders 221.

[0046] Furthermore, the loading platform 21 is also equipped with a first light inspection component 25. The movement path of the first suction cup robot 4 is increased to the path to the first light inspection component 25. The first light inspection component 25 has two purposes. The first is to detect whether the first suction cup robot 4 has adsorbed the inner disc. That is, when the inner disc in the loading cylinder 221 is used up, the first suction cup robot 4 will not be able to adsorb the inner disc. At this time, after the first light inspection component 25 detects that the first suction cup robot 4 has not adsorbed the inner disc, the controller sends a command to the loading push component 24 to make the pushing end of the loading push component 24 disengage from the loading port. Then, the loading drive component 23 drives the loading turntable 22 to rotate, switching another set of loading cylinders 221 containing inner discs to the bottom of the first suction cup robot 4, ensuring that the first suction cup robot 4 stably places the inner disc in the receiving station 51 each time. The second method is to detect the front and back of the inner disc. Some inner discs have scales or information on the front. Therefore, during printing, it is necessary to print on the side with scales. So when the first suction cup robot 4 picks up the inner disc, it first moves to the first lamp inspection piece 25 for inspection to determine whether there is an inner disc on the first suction cup robot 4 and whether the front and back of the inner disc are correct.

[0047] The loading platform 21 can also be equipped with a non-conforming basket. The first suction cup robot 4 can place the inner disc pieces with incorrect front and back sides into the non-conforming basket to provide recycling of inner disc pieces that do not meet the requirements.

[0048] The illumination detection path of the first lamp inspection piece 25 is upward detection, that is, it provides bottom detection of the first suction cup robot 4 from bottom to top, thereby ensuring the accuracy and stability of the inner disk of the first suction cup robot 4 in adsorption and movement.

[0049] After setting the first light inspection piece 25, the movement path of the first suction cup robot 4 is receiving station 51 - feeding cylinder 221 - first light inspection piece 25 - receiving station 51, so as to ensure stable feeding of the inner disc.

[0050] In some embodiments, the printing mechanism 3 includes a printing table 31, a feeding table 32, a horizontal drive member 33, a vertical drive member 34, a first printing head 35, and a second printing head 36; the printing table 31 is mounted on the machine structure 1, and the printing table 31 has an inner recess 311, which provides for the installation of other components.

[0051] The feeding platform 32 is located inside the recess 311, and there are two sets of feeding platforms 32, which are respectively divided into a first feeding platform 32 and a second feeding platform 32 installed on both sides of the printing platform 31. The first feeding platform 32 and the second feeding platform 32 provide supplementary printing material for the two sets of printing heads.

[0052] The horizontal drive component 33 is installed inside the printing table 31, and the vertical drive component 34 is connected to the drive end of the horizontal drive component 33. The horizontal drive component 33 is used to drive the vertical drive component 34 to move horizontally. The direction of the horizontal movement is the horizontal direction between the corresponding receiving station 51 and the inner recess 311. The driving direction of the vertical drive component 34 is the vertical direction. The first printing head 35 and the second printing head 36 are both installed on the vertical drive component 34. Therefore, the vertical drive component 34 can cooperate with the horizontal drive component 33 to adjust the position of the first printing head 35 and the second printing head 36.

[0053] The first printing head 35 is located below the first feeding platform 32, and the second printing head 36 is located below the second feeding platform 32. The first printing head 35 and the second printing head 36 are driven by the horizontal drive member 33 and the vertical drive member 34 to move to the receiving station 51 or the corresponding feeding platform 32. When the first printing head 35 and the second printing head 36 move to the top of the receiving station 51, they are driven by the vertical drive member 34 to print on the surface of the inner disc on the receiving station 51. After printing is completed, the vertical drive member 34 drives the first printing head 35 and the second printing head 36 to rise and reset. The horizontal drive member 33 drives the vertical drive member 34 to move to the top of the feeding platform 32. The vertical drive member 34 drives the first printing head 35 and the second printing head 36 to descend to the corresponding feeding platform 32, thereby attaching the ink or printing material on the surface of the feeding platform 32 to the first printing head 35 and the second printing head 36. This ensures that a clear printing pattern can be obtained for each printing, avoiding the situation where the pattern is unclear due to insufficient printing material.

[0054] Both the horizontal drive component 33 and the vertical drive component 34 can be hydraulic cylinders or pneumatic cylinders, or they can be lead screw structures. If load-bearing is required, a guide rail can be set inside the printing table 31, and a guide block is slidably set on the guide rail. The vertical drive component 34 is installed on the guide block, so that the horizontal drive component 33 no longer provides load-bearing, but only provides the force to push the guide block of the vertical drive component 34 to slide along the guide rail.

[0055] Furthermore, the transverse drive unit 33 is also provided with a feeding rack 37, on which a cover plate 38 is provided. A feeding component 39 is embedded in the cover plate 38. The feeding component 39 contains printing material. The function of the feeding component 39 is to apply printing material to the feeding table 32 to ensure that a sufficient amount of printing material is attached each time the first printing head 35 or the second printing head 36 contacts the feeding table 32, thereby improving the cleanliness of the pattern.

[0056] Specifically, the feeding rack 37 moves with the horizontal drive member 33 but is not connected to the vertical drive member 34. Therefore, the feeding rack 37, the cover plate 38, and the feeding component 39 are at the same height. When the feeding component 39 moves with the horizontal drive member 33 via the feeding rack 37, it moves along the feeding table 32, thereby applying printing material to the surface of the feeding table 32. This facilitates the addition of printing material to the feeding table 32. The cover plate 38 prevents the printing material from drying out too much. The cover plate 38 also moves with the transverse drive 33. Therefore, when the first printing head 35 and the second printing head 36 are printing on the inner disc on the receiving station 51, the cover plate 38 covers the feeding table 32 to prevent the printing material from evaporating. When the first printing head 35 and the second printing head 36 are driven back to the feeding table 32 by the transverse drive 33, the cover plate 38 opens the feeding table 32 simultaneously. At the same time as it opens, the feeding component 39 moves on the feeding table 32 to attach the printing material to the feeding table 32.

[0057] Furthermore, the feeding component 39 includes a feeding tube 391, a feeding cover 392, a pressure plate 393, and a pressure driving part 394; the feeding tube 391 is embedded in the cover plate 38, and the feeding tube 391 contains printing material. Both ends of the feeding tube 391 are openings, so that after the printing material is placed in the feeding tube 391, it is affected by gravity and penetrates the feeding tube 391 to contact the surface of the feeding table 32, thereby applying the printing material to the feeding table 32.

[0058] The filling cover 392 is screwed to the filling tube 391. That is, the filling cover 392 has an internal thread and the outer wall of the filling tube 391 has an external thread. The internal and external threads are used to screw the filling cover 392 and the filling tube 391 together. The pressure plate 393 is located inside the filling tube 391 and is used to press the printing material. After the printing material is under pressure, the amount of coating on the feeding table 32 is increased, ensuring that the amount of coating on any printing head is sufficient.

[0059] The pressure drive unit 394 is installed on the filling cover 392. The pressure drive unit 394 can be an electric push rod. Its upper end passes through the filling cover 392 and is connected to the pressure plate 393 in the filling tube 391, so that the pressure drive unit 394 can apply pressure to the pressure plate 393 and use the pressure plate 393 to apply the printing material more fully to the feeding table 32.

[0060] Specifically, after the printing material is placed in the feeding tube 391, the feeding cover 392 is screwed on. Then, the pressure drive unit 394 is activated, which drives the pressure plate 393 to apply pressure to the printing material. This ensures that when the feeding tube 391 moves along with the cover plate 38 under the drive of the transverse drive member 33, the printing material can be fully applied to the feeding table 32, ensuring that there is enough printing material on the feeding table 32.

[0061] The printing material is a solid material, so it can move along with the feeding tube 391, thereby allowing the printing material to be evenly applied to the feeding table 32.

[0062] Furthermore, a pressure sensor 395 is provided between the pressure plate 393 and the pressure drive unit 394. The pressure sensor 395 is a pressure sensor used to detect the pressure provided by the pressure drive unit 394 to the pressure plate 393. When the pressure drive unit 394 provides pressure to the pressure plate 393, the pressure plate 393 comes into contact with the printing material, which generates a reaction force to the pressure sensor 395. Therefore, after receiving the pressure feedback, the pressure sensor 395 transmits the data signal to the controller. The controller sends a command to the pressure drive unit 394 to adjust the pressure applied by the pressure drive unit 394 to the pressure plate 393, so as to avoid the situation where the printing material is consumed too quickly due to excessive pressure, or the printing material cannot be fully coated on the feeding table 32 due to insufficient pressure.

[0063] In some embodiments, a second light inspection component 61 is provided between the second suction cup robot 6 and the printing mechanism 3. The second light inspection component 61 is mainly used to detect whether the pattern printed on the inner disc on the receiving station 51 is clear and accurate. Within the movement range of the second suction cup robot 6, a recycling basket, recycling tray or recycling conveyor belt, as well as a defective product basket or defective product tray can be set. If the second light inspection component 61 fails the test, the second suction cup robot 6 places the inner disc in the defective product basket. If it passes the test, the second suction cup robot 6 places the passing inner disc in the recycling basket.

[0064] The illumination detection path of the second lamp inspection piece 61 is top-down inspection, that is, it is illuminating the receiving station 51 from top to bottom to obtain the inner disc pattern information printed on the receiving station 51, and compares it with the qualified pattern of the controller in the background. Regardless of whether it is qualified or not, the second suction cup robot 6 will adsorb and place the inner disc in the corresponding area.

[0065] The first light inspection piece 25 and the second light inspection piece 61 have the same structure, the difference being the illumination angle. The first light inspection piece 25 is for pattern inspection, and the second light inspection piece 61 is for top-view inspection. Both structures include a supplementary light and a CDD camera. The supplementary light is used to supplement the light, and the CDD camera acquires the pattern of the required inspection structure, such as the bottom surface of the first suction cup robot 4 or the inner plate on the receiving station 51. After acquiring the inspection data, the acquired data is sent to the controller for pattern comparison.

[0066] In some embodiments, a dust removal mechanism 7 is provided between the first suction cup robot 4 and the printing mechanism 3. The dust removal mechanism 7 is used to blow airflow on the inner disc at the receiving station 51 after the first suction cup robot 4 takes the inner disc from the feeding mechanism 2 and places it at the receiving station 51 to remove dust from the surface of the inner disc, so as to ensure that the surface of the inner disc is clean and tidy during printing and the printing effect is better.

[0067] The dust removal mechanism 7 includes a dust removal pipe and an air pump. The dust removal pipe is formed by connecting multiple pipe sections and extends from the position between the first suction cup robot 4 and the printing mechanism 3 to the top of the switching mechanism 5, with the pipe opening aligned with the receiving station 51. The air pump is connected to the other end of the dust removal pipe and provides airflow supply.

[0068] The dust removal pipe can also be equipped with a photoelectric sensor. When the receiving station 51 passes by, the photoelectric sensor detects it and uses the controller to control the air pump to start and stop. The start and stop time can be adjusted according to the needs, such as 5 seconds. Compared with the air pump in the normally open state, it can save resources.

[0069] On the other hand, in addition to the above-described embodiments, the dust removal mechanism 7 may also include a piston cylinder, a piston body, a piston rod, and a vent pipe; the piston cylinder is installed on the outer wall of the printing table 31, the piston body is located inside the piston cylinder, and can move along the inner wall of the piston cylinder; one end of the piston rod can be connected to the cover plate 38, and the other end is connected to the piston body; the vent pipe is connected to the end of the piston cylinder away from the piston rod, and the vent pipe can be provided with several bends so that the opening of the vent pipe can face the receiving station 51 from top to bottom.

[0070] When the cover plate 38 moves through the feeding rack 37, it drives the piston rod to move, thereby moving the piston body. During the movement, the piston body compresses the air in the piston cylinder, and the resulting airflow is transported along the vent pipe and blown out from the vent pipe opening to the receiving station 51 to achieve the dust removal effect. When the cover plate 38 drives the piston rod to move in the opposite direction, the piston cylinder becomes a suction unit, which does not affect the conveying of the receiving station 51.

[0071] By linking the piston with the cover plate 38, dust removal can be achieved without the need for additional electric structures such as air pumps, thus improving the overall linkage of the structure.

[0072] In some embodiments, the machine structure 1 is further provided with several recycling structures, which are set within the adsorption range of the first suction cup robot 4 and the second suction cup robot 6. The recycling structures may include recycling baskets, recycling crates, recycling conveyor belts, etc., and the number of structures is determined according to requirements. The recycling structures located within the adsorption range of the first suction cup robot 4 are used to recycle inner discs that are different on the front and back or have defects. The recycling structures located within the second suction cup robot 6 are used to recycle inner discs of printed qualified products and inner discs of printed unqualified products.

[0073] The recycling structure allows for the convenient collection of qualified and unqualified inner discs.

[0074] 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 included within the scope of protection of this application.

Claims

1. A two-color pad printing machine for quartz watches, characterized in that, The system includes a machine base structure (1); the machine base structure (1) is equipped with a feeding mechanism (2), a printing mechanism (3), a first suction cup robot (4), a switching mechanism (5), and a second suction cup robot (6); the switching mechanism (5) is located at the center of the machine base structure (1) and has several receiving stations (51) along the circumferential direction for receiving inner discs; the receiving stations (51) rotate along a fixed circumferential path following the switching mechanism (5); the first suction cup robot (4) and the feeding mechanism (2) are both located on one side of the switching mechanism (5), and the feeding mechanism (2) provides unprinted inner discs. The inner disc is stored in a conveying path between the feeding mechanism (2) and the switching mechanism (5), whereby the inner disc is adsorbed and placed at the receiving station (51). The printing mechanism (3) is provided with two sets of printing ends, each set of printing ends corresponding to one receiving station (51). The switching mechanism (5) conveys the inner disc on the receiving station (51) to the printing end, and the two sets of printing ends print on the inner disc respectively. The second suction cup robot (6) is located on the other side of the switching mechanism (5) and is used to adsorb and convey the printed inner disc.

2. The quartz watch two-color pad printing machine according to claim 1, characterized in that, The feeding mechanism (2) includes a feeding platform (21), a feeding turntable (22), a feeding drive (23), and a feeding pusher (24); the feeding platform (21) is disposed on the machine base structure (1); the feeding drive (23) is installed on the feeding platform (21), the feeding turntable (22) is connected to the feeding drive (23) and is driven to rotate by the feeding drive (23); the feeding turntable (22) is provided with several feeding mechanisms. Material cylinder (221), the inside of the material cylinder (221) is used to store unprinted inner discs; the feeding pusher (24) is installed on the feeding platform (21), the bottom of the material cylinder (221) has a feeding port, after the first suction cup robot (4) picks up the inner disc corresponding to the surface of the material cylinder (221), the pushing end of the feeding pusher (24) passes through the feeding port and pushes the inner disc towards the cylinder opening of the material cylinder (221).

3. A quartz watch two-color pad printing machine according to claim 2, characterized in that, The loading platform (21) is also provided with a first light inspection piece (25), and the moving path of the first suction cup robot (4) is increased to the path of moving to the first light inspection piece (25); the illumination detection path of the first light inspection piece (25) is upward detection.

4. A quartz watch two-color pad printing machine according to claim 1, characterized in that, The printing mechanism (3) includes a printing table (31), a feeding table (32), a horizontal drive (33), a vertical drive (34), a first printing head (35), and a second printing head (36); the printing table (31) is installed on the machine structure (1), and the printing table (31) has an inner recess (311); the feeding table (32) is located in the inner recess (311), and is divided into a first feeding table (32) and a second feeding table (32) installed sequentially on both sides of the printing table (31); the horizontal drive (33) is installed inside the printing table (31). The vertical drive (34) is connected to the drive end of the horizontal drive (33); the first printing head (35) and the second printing head (36) are both connected to the vertical drive (34); the first printing head (35) is below the first feeding station (32), the second printing head (36) is below the second feeding station (32), and the first printing head (35) and the second printing head (36) are driven by the horizontal drive (33) and the vertical drive (34) to move to the receiving station (51) or to the feeding station (32).

5. A quartz watch two-color pad printing machine according to claim 4, characterized in that, The transverse drive (33) is also provided with a feeding rack (37), and the bottom of the feeding rack (37) is provided with a cover plate (38). The cover plate (38) is embedded with a feeding component (39), which contains printing material. When the feeding component (39) moves with the transverse drive (33), the printing material comes into contact with the feeding table (32).

6. A two-color pad printing machine for quartz watches according to claim 5, characterized in that, The filling component (39) includes a filling tube (391), a filling cover (392), a pressure plate (393), and a pressure drive unit (394); the filling tube (391) is embedded in the cover plate (38), and the filling tube (391) contains printing material; the filling cover (392) is screwed to the filling tube (391), the pressure plate (393) is located inside the filling tube (391) and presses down the printing material, and the pressure drive unit (394) is installed on the filling cover (392) and passes through the filling cover (392) to connect with the pressure plate (393) inside the filling tube (391).

7. A quartz watch two-color pad printing machine according to claim 6, characterized in that, A pressure sensor (395) is provided between the pressure plate (393) and the pressure driving unit (394) for detecting the pressure provided by the pressure driving unit (394) to the pressure plate (393).

8. A quartz watch two-color pad printing machine according to claim 1, characterized in that, A second lamp inspection component (61) is provided between the second suction cup robot (6) and the printing mechanism (3), and the illumination detection path of the second lamp inspection component (61) is top-view detection.

9. A quartz watch two-color pad printing machine according to claim 1, characterized in that, A dust removal mechanism (7) is also provided between the first suction cup robot (4) and the printing mechanism (3).

10. A two-color pad printing machine for quartz watches according to claim 1, characterized in that, The machine structure (1) is also provided with several recycling structures, which are set in the adsorption range of the first suction cup manipulator (4) and the adsorption range of the second suction cup manipulator (6).

Images