CN111634634A

CN111634634A - Automatic feeding and discharging equipment of pad printing machine

Info

Publication number: CN111634634A
Application number: CN202010571736.XA
Authority: CN
Inventors: 雷响; 刘建波; 吴丰礼
Original assignee: Guangdong Topstar Technology Co Ltd
Current assignee: Guangdong Topstar Technology Co Ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2020-09-08
Anticipated expiration: 2040-06-19
Also published as: CN111634634B

Abstract

The invention discloses automatic feeding and discharging equipment for a pad printing machine, which comprises a frame, a flow conveying line, a material tray discharging mechanism, a material tray recycling mechanism, a transferring and discharging mechanism, a robot grabbing and discharging mechanism and a centering mechanism with a positioning station and a temporary storage station. The frame is sequentially provided with a first station, a second station and a third station, the material tray discharging mechanism is arranged at the position of the frame corresponding to the first station, and the material tray recycling mechanism is arranged at the position of the frame corresponding to the third station; the flow conveyor line is arranged on the frame, the first end of the flow conveyor line extends to the material tray discharging mechanism, and the second end of the flow conveyor line extends to the material tray recycling mechanism; the centering mechanism is arranged at the position of the frame corresponding to the second station and is positioned beside the flow conveying line; the transferring and discharging mechanism is arranged at the position of the frame corresponding to the second station, the transferring and discharging mechanism is also positioned above the flow line conveying line and the centering mechanism, and the robot grabbing and discharging mechanism is positioned beside the centering mechanism; so as to realize the purpose of automatic feeding and discharging.

Description

Automatic feeding and discharging equipment of pad printing machine

Technical Field

The invention relates to the field of automation equipment, in particular to automatic feeding and discharging equipment for a pad printing machine.

Background

Due to the rapid development and large-scale application of glass products, the requirements on the efficiency and quality of glass production are higher and higher; meanwhile, the labor cost is rapidly increased, and the requirement of the current glass manufacturers on the production efficiency cannot be met by early manual loading and unloading. In order to improve efficiency and quality and realize production automation, more and more manufacturers gradually demand automatic production equipment.

During the process of printing the glass by the pad printing equipment, loading and unloading are carried out manually, namely, the glass is taken out of a material tray manually, and then the taken-out glass is placed into the pad printing equipment for printing; after printing is finished, manually taking the printed glass out and putting the glass in a material tray for stacking and discharging; and repeating the above steps continuously to finish the batch printing of the glass by the pad printing equipment. However, the manual loading and unloading method is very inconvenient, and the efficiency, speed and quality of the production line are severely limited.

Therefore, there is a need for an automatic loading and unloading device for pad printing machine, which can achieve automatic loading and unloading to improve the efficiency, speed and quality of the production line and reduce the burden of the operator.

Disclosure of Invention

The invention aims to provide the automatic feeding and discharging equipment of the pad printing machine, which can realize automatic feeding and discharging to improve the efficiency, speed and quality of a production line and reduce the burden of operators.

In order to achieve the purpose, the automatic feeding and discharging equipment for the pad printing machine comprises a frame, a flow conveying line, a material tray discharging mechanism, a material tray recycling mechanism, a transferring and discharging mechanism, a robot grabbing and discharging mechanism and a centering mechanism with a positioning station and a temporary storage station. The frame is sequentially provided with a first station, a second station and a third station which are spaced from each other along the X-axis direction, the charging tray discharging mechanism is arranged at the position of the frame corresponding to the first station, and the charging tray recycling mechanism is arranged at the position of the frame corresponding to the third station; the flow conveyor line is arranged on the frame, a first end of the flow conveyor line extends to the material tray discharging mechanism, and a second end of the flow conveyor line extends to the material tray recycling mechanism; the robot grabbing and discharging mechanism is arranged on the side of the centering mechanism; wherein, the tray discharging mechanism transfers a plurality of trays each provided with a workpiece to be printed and supported by the tray discharging mechanism to the first end of the flow conveyor line corresponding to the first station in sequence, the flow conveyor line conveys the trays at the first station to the second station and the third station in sequence, the transfer and discharging mechanism is responsible for transferring the workpiece to be printed on the tray at the second station to the positioning station of the centering mechanism, the transfer and discharging mechanism is also responsible for transferring the printed workpiece at the temporary storage station of the centering mechanism to the tray at the second station, the robot grabbing and discharging mechanism is responsible for transferring the workpiece to be printed at the positioning station of the centering mechanism to the external pad printer, and the robot grabbing and discharging mechanism is also responsible for grabbing the printed workpiece at the pad printer and transferring the printed workpiece to the temporary storage station of the centering mechanism, and the material tray recovery mechanism stacks the material trays filled with the printed workpieces at the third station one by one upwards.

Preferably, the automatic feeding and discharging device for the pad printing machine further comprises a blocking mechanism and a jacking mechanism, wherein the blocking mechanism and the jacking mechanism are respectively installed at the position, corresponding to the second station, of the frame, the blocking mechanism is located right below the flow conveyor line and can perform lifting motion along the Z-axis direction, the blocking mechanism blocks the material tray at the second station from being conveyed to the third station when being lifted, and the blocking mechanism allows the material tray at the second station to be conveyed to the third station when being lowered; the jacking mechanism is located beside the flow conveyor line along the Y-axis direction, and jacks the material tray at the second station along the Y-axis direction.

Preferably, the automatic loading and unloading device for the pad printing machine further comprises a first side guide rail and a second side guide rail, the first side guide rail and the second side guide rail are used for guiding the material trays conveyed by the flow line conveying line, the first side guide rail and the second side guide rail are parallel to each other and are spaced apart, the first side guide rail and the second side guide rail are respectively installed at the position, corresponding to the second station, of the frame, and the flow line conveying line is located between the first side guide rail and the second side guide rail along the Y-axis direction.

Preferably, the flowing water conveying line comprises a power driver, a mounting shaft, a first wheel, a second wheel, a third wheel, a fourth wheel, a first annular transmission member and a second annular transmission member, the mounting shaft is rotatably mounted on the frame, the axial direction of the mounting shaft is arranged along the Y-axis direction, the first wheel and the second wheel are mounted on the mounting shaft and are spaced along the Y-axis direction, the third wheel and the fourth wheel are each rotatably mounted on the frame and are spaced along the Y-axis direction, the third wheel is aligned with the first wheel along the X-axis direction, the fourth wheel is aligned with the second wheel along the X-axis direction, the first annular transmission member is wound on the first wheel and the third wheel, the second annular transmission member is wound on the second wheel and the fourth wheel, the power driver is mounted on the frame and drives the mounting shaft to rotate, the tray recovery mechanism and the tray emptying mechanism are respectively positioned between the first annular transmission piece and the second annular transmission piece, and the transfer and emptying mechanism is positioned right above the first annular transmission piece and the second annular transmission piece.

Preferably, charging tray drop feed mechanism contains the top support subassembly that can follow the Z axle direction and can follow the Y axle direction and slide and the branch dish subassembly that goes up and down along the Z axle direction, the top support subassembly is located between first and the second annular transmission piece, the outside between first and the second annular transmission piece respectively is equipped with branch dish subassembly, with the help of the cooperation of the lift between top support subassembly and branch dish subassembly and the slip of branch dish subassembly and realize that a plurality of range upon range of charging trays toward one by one blowing on first and the second annular transmission piece.

Preferably, the jacking assembly comprises a jacking plate and a jacking cylinder located right below the jacking plate, and an output end of the jacking cylinder is fixedly connected with the jacking plate; the tray dividing assembly comprises a Y-axis cylinder, a Y-axis baffle, a Z-axis cylinder and a tray dividing plate, the Y-axis baffle is installed at the output end of the Y-axis cylinder, the Z-axis cylinder is installed on the Y-axis baffle, the tray dividing plate is installed at the output end of the Z-axis cylinder, the tray dividing plate is driven by the Z-axis cylinder to extend upwards or retract downwards to lift the Y-axis baffle, and the Y-axis cylinder drives the Y-axis baffle, together with the Z-axis cylinder and the tray dividing plate, to be close to or far away from the top supporting plate.

Preferably, the tray recovery mechanism comprises a jacking cylinder, a bearing plate and a bearing clamp capable of switching between a bearing position and an avoiding position, the bearing plate is positioned between the first annular transmission part and the second annular transmission part, the jacking cylinder is positioned under the bearing plate, the output end of the jacking cylinder is fixedly connected with the bearing plate, and the bearing clamp is respectively arranged above the outer sides of the first annular transmission part and the second annular transmission part; and the material trays placed on the first and second annular transmission parts at the third station push the bearing clamp to pass through the bearing clamp when the jacking cylinder drives the bearing plate to rise upwards, and the material trays passing through the bearing clamp are placed on the bearing clamp switched to the bearing position when the jacking cylinder drives the bearing plate to fall.

Preferably, the centering mechanism comprises a frame body, a positioning table, an X-axis positioning assembly, a Y-axis positioning assembly, a first motor, a second motor, an X-axis belt transmission assembly and a Y-axis belt transmission assembly, the positioning station and the temporary storage station are arranged on the positioning table, the positioning table is further provided with an X-axis avoiding space surrounding the positioning station from the X-axis direction and a Y-axis avoiding space surrounding the positioning station from the Y-axis direction, the X-axis positioning assembly is movably assembled on the frame body, the X-axis positioning assembly is further arranged in the X-axis avoiding space in a penetrating manner, the Y-axis positioning assembly is movably assembled on the frame body, the Y-axis positioning assembly is further arranged in the Y-axis avoiding space in a penetrating manner, the first motor and the second motor are arranged on the frame body, and the X-axis belt transmission assembly and the Y-axis belt transmission assembly are crossed and arranged in a staggered manner, the X-axis belt transmission assembly is connected between the first motor and the X-axis positioning assembly, the Y-axis belt transmission assembly is connected between the second motor and the Y-axis positioning assembly, and the X-axis positioning assembly is matched with the first motor and the X-axis belt transmission assembly and the Y-axis positioning assembly is matched with the second motor and the Y-axis belt transmission assembly to jointly realize the positioning of the X axis and the Y axis of a workpiece to be printed at the positioning station.

Preferably, the transferring, picking and placing mechanism comprises an X-axis traverse component, a Y-axis traverse component, a rotary driver, at least two rotary seats, Z-axis drivers and suction nozzles, wherein the Y-axis traverse component is mounted on the frame, the X-axis traverse component is mounted on the output end of the Y-axis traverse component, the rotary driver is mounted at the output end of the X-axis traverse component, the output ends of the rotary drivers are vertically arranged, the rotary seats are mounted at the output end of the rotary driver, the Z-axis drivers are mounted on the rotary seats, the number of the Z-axis drivers is at least two, all the Z-axis drivers are arranged around the output ends of the rotary drivers, the output ends of each Z-axis driver are vertically arranged, and the suction nozzles are mounted at the output ends of each Z-axis driver.

Preferably, the automatic feeding and discharging equipment for the pad printing machine further comprises a safety protection door mechanism, a first folding and unfolding operating platform and a second folding and unfolding operating platform, wherein the first folding and unfolding operating platform is installed on the frame and is arranged adjacent to the first end of the flow conveying line, the second folding and unfolding operating platform is installed on the frame and is arranged adjacent to the second end of the flow conveying line, and the safety protection door mechanism is located beside the robot grabbing and discharging mechanism and is provided with an emergency stop switch for controlling the automatic feeding and discharging equipment for the pad printing machine to stop suddenly.

Compared with the prior art, by means of the matching of the material tray discharging mechanism, the material tray recycling mechanism, the flow conveyor line, the transfer taking and discharging mechanism, the robot grabbing and discharging mechanism and the centering mechanism, in the process of feeding and discharging of the pad printing machine, a material tray which is the lowest part and is filled with workpieces to be printed is firstly transferred to the first end of the flow conveyor line corresponding to the first station by the material tray discharging mechanism, and the material tray is sequentially conveyed to the second station and the third station by the flow conveyor line; when the material tray filled with the workpieces to be printed is conveyed to a second station by the flow conveyor line and is suspended, the workpieces to be printed on the material tray at the second station are transferred to a positioning station of the centering mechanism by the transfer and material-taking and material-discharging mechanism, then the workpieces to be printed at the positioning station of the centering mechanism are grabbed and transferred to an external transfer printer by the robot grabbing and material-discharging mechanism, the printed workpieces at the transfer printer are transferred to a temporary storage station of the centering mechanism by the robot grabbing and material-discharging mechanism, and the printed workpieces at the temporary storage station of the centering mechanism are grabbed away and transferred to the material tray at the second station by the transfer and material-taking and material-discharging mechanism; when the workpieces to be printed on the material tray at the second station are completely taken away and filled with the printed workpieces, the material tray at the second station is conveyed to the third station by the flow conveyor line, and meanwhile, the material tray discharging mechanism transfers the other material tray filled with the workpieces to be printed to the first end of the flow conveyor line corresponding to the first station, and the material tray is conveyed to the second station by the flow conveyor line; the automatic feeding of the workpieces to be printed on the material tray to the pad printing machine, the automatic discharging of the printed workpieces at the pad printing machine to the material tray and the stacking and recycling of the material tray can be realized by continuously repeating the actions, so that the efficiency, the speed and the quality of the production line are improved, the burden of operators is reduced, more basis is provided for the plan control of a production department, and the production planning and scheduling are more accurate.

Drawings

FIG. 1 is a schematic perspective view of the feeding and discharging apparatus of the pad printing machine of the present invention.

Fig. 2 is a schematic plan view of the feeding and discharging apparatus of the pad printing machine shown in fig. 1 in a top view.

Fig. 3 is a schematic three-dimensional structure diagram of the pad printing machine loading and unloading device when the flow conveyor line, the tray emptying mechanism, the tray recovery mechanism, the first side guide rail, the second side guide rail, the blocking mechanism and the jacking mechanism are installed together and the tray is displayed.

Fig. 4 is a schematic three-dimensional structure diagram of the pad printing machine loading and unloading device when the flow conveyor line, the tray emptying mechanism, the tray recovery mechanism, the first side guide rail, the second side guide rail, the blocking mechanism and the jacking mechanism are installed together and the tray is hidden.

FIG. 5 is a schematic perspective view of the flow line in the loading/unloading apparatus of the pad printing machine according to the present invention.

FIG. 6 is a schematic perspective view of a tray feeding mechanism in the feeding and discharging apparatus of the pad printing machine.

Fig. 7 is a schematic plan view of the tray emptying mechanism shown in fig. 6 after being projected from right to left.

FIG. 8 is a schematic perspective view of a transfer mechanism of a loading/unloading apparatus of a pad printing machine according to the present invention.

FIG. 9 is a schematic perspective view of a tray recycling mechanism in the loading/unloading apparatus of the pad printing machine according to the present invention.

FIG. 10 is a schematic perspective view of a centering mechanism in the loading and unloading apparatus of the pad printing machine of the present invention showing a workpiece.

FIG. 11 is a schematic perspective view of a centering mechanism of the loading and unloading apparatus of a pad printing machine according to the present invention when hiding a workpiece.

Detailed Description

In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.

Referring to fig. 1 and 2, the automatic loading and unloading apparatus 100 of the pad printing machine of the present invention is used in cooperation with the pad printing machine to automatically position the workpiece 210 to be printed for the second time and then place the workpiece at the pad printing machine, and during the process of placing the workpiece 210 to be printed at the pad printing machine, the printed workpiece 220 at the pad printing machine is also taken away, so as to achieve the purpose of automatic loading and unloading. The automatic feeding and discharging equipment 100 for the pad printing machine comprises a frame 10, a flow conveyor line 20, a tray emptying mechanism 30, a tray recycling mechanism 40, a transferring and emptying mechanism 50, a robot grabbing and emptying mechanism 60 and a centering mechanism 70 with a positioning station 71 and a temporary storage station 72. The frame 10 is sequentially provided with a first station 11, a second station 12 and a third station 13 which are spaced from each other along the X-axis direction, the tray discharging mechanism 30 is installed at a position of the frame 10 corresponding to the first station 11, that is, the tray discharging mechanism 30 installed on the frame 10 also corresponds to the first station 11, so that the tray discharging mechanism 30 sequentially transfers the trays 200 to the water flowing conveying line 20 at the first station 11. The tray recovery mechanism 40 is installed at a position of the frame 10 corresponding to the third station 13, that is, the tray recovery mechanism 40 installed on the frame 10 also corresponds to the third station 13, so that the tray recovery mechanism 40 can stack and recover the trays 200 on the flow conveyor line 20 at the third station 13 one by one. The flow line 20 is arranged on the frame 10, and a first end of the flow line 20 extends to the tray emptying mechanism 30 so as to ensure that the tray emptying mechanism 30 reliably transfers the trays 200 to the first end of the flow line 20 in sequence and orderly; the second end of the flow line 20 extends to the tray recovery mechanism 40 to ensure that the tray recovery mechanism 40 can stack and recover the trays 200 on the second end of the flow line 20 one by one. The centering mechanism 70 is installed at a position of the frame 10 corresponding to the second station 12, that is, the centering mechanism 70 installed on the frame 10 also corresponds to the second station 12; the centering mechanism 70 is located beside the flow line 20 along the Y-axis direction, so that the transfer and discharge mechanism 50 transfers the workpiece 210 to be printed on the tray 200 at the second station 12 to the positioning station 71 of the centering mechanism 70, or transfers the workpiece 220 to be printed at the temporary storage station 72 of the centering mechanism 70 to the tray 200 at the second station 12. The transferring and taking and placing mechanism 50 is installed at the position of the frame 10 corresponding to the second station 12, namely, the transferring and taking and placing mechanism 50 installed on the frame 10 also corresponds to the second station 12; the transfer and discharging mechanism 50 is also located above both the flow line 20 and the centering mechanism 70. The robot grasping and discharging mechanism 60 is located beside the centering mechanism 70. Therefore, during operation, the tray emptying mechanism 30 sequentially transfers a plurality of trays 200 each containing a workpiece 210 to be printed and supported by the tray emptying mechanism 30 to the first end of the flow conveyor line 20 corresponding to the first station 11, the flow conveyor line 20 sequentially conveys the trays 200 at the first station 11 to the second station 12 and the third station 13, the transfer and emptying mechanism 50 is responsible for transferring the workpiece 210 to be printed on the tray 200 at the second station 12 to the positioning station 71 of the centering mechanism 70, the transfer and emptying mechanism 50 is also responsible for transferring the printed workpiece 220 at the temporary storage station 72 of the centering mechanism 70 to the tray 200 at the second station 12, the robot gripping and emptying mechanism 60 is responsible for transferring the workpiece 210 to be printed at the positioning station 71 of the centering mechanism 70 to an external pad printing machine, the robot gripping and emptying mechanism 60 is also responsible for gripping the printed workpiece 220 at the pad printing machine and transferring the printed workpiece 220 to the temporary storage station 72 of the centering mechanism 70, the tray recovery mechanism 40 stacks the trays 200 filled with the printed workpieces 220 at the third station 13 one by one upwards; so as to realize the automatic operation flow of orderly placing the trays 200 at the first station 11, automatically feeding each workpiece 210 to be printed on the trays 200 at the second station 12 to the pad printer, automatically discharging the printed workpiece 220 at the pad printer to the trays 200 at the second station 12, and stacking and recovering the trays 200 filled with the printed workpieces 220 at the third station 13 upwards. Specifically, in order to facilitate the operation of the operator in the loading and unloading process and ensure the safety of the operator, the automatic loading and unloading apparatus 100 of the pad printing machine further includes a safety protection door mechanism 94, a first folding and unfolding operating platform 95 and a second folding and unfolding operating platform 96, the first folding and unfolding operating platform 95 is installed on the frame 10 and is adjacent to the first end of the running water conveying line 20, the second folding and unfolding operating platform 96 is installed on the frame 10 and is adjacent to the second end of the running water conveying line 20, the safety protection door mechanism 94 is located beside the robot gripping and unloading mechanism 60 and is provided with an emergency stop switch 941 for controlling the emergency stop of the loading and unloading apparatus 100 of the pad printing machine, so that the suspension of the loading and unloading apparatus 100 of the pad printing machine is rapidly realized by the emergency stop switch 941, thereby ensuring the safety of the apparatus and the operator. More specifically, the following:

as shown in fig. 2 to 4, the automatic loading and unloading apparatus 100 of the pad printing machine further includes a blocking mechanism 80 and a pressing mechanism 91, the blocking mechanism 80 and the pressing mechanism 91 are respectively installed at the position of the frame 10 corresponding to the second station 12, that is, the blocking mechanism 80 and the pressing mechanism 91 installed on the frame 10 also correspond to the second station 12; the blocking mechanism 80 is positioned right below the flow conveyor line 20 and can perform lifting motion along the Z-axis direction, and when the blocking mechanism 80 is lifted, the material tray 200 at the second station 12 is blocked from being conveyed to the third station 13, so that the material tray 200 at the second station 12 is positioned by means of the blocking mechanism 80 at the moment, and the position accuracy of the material tray 200 at the second station 12 is ensured, and the reliability of transferring the workpiece 210 to be printed and the printed workpiece 220 by the transferring and discharging mechanism 50 is ensured; the blocking mechanism 80, when lowered, allows the tray 200 at the second station 12 to be conveyed to the third station 13, so that the tray 200 filled with the printed workpieces 220 is conveyed to the third station 13, and simultaneously the tray 200 at the first station 11 is conveyed to the second station 12, thereby ensuring the continuity of work. The jacking mechanism 91 is located beside the flow conveyor line 20 along the Y-axis direction, and the jacking mechanism 91 jacks the material tray 200 at the second station 12 along the Y-axis direction to prevent the material tray 200 positioned by the blocking mechanism 80 from being jumbled. Specifically, in fig. 2 to 4, in order to ensure the accuracy of the position where the tray 200 is conveyed by the flow line 20, the pad printing machine automatic loading and unloading apparatus 100 of the present invention further includes a first side rail 92 and a second side rail 93 for guiding the tray 200 conveyed by the flow line 20, the first side rail 92 and the second side rail 93 are parallel to and spaced apart from each other, the first side rail 92 and the second side rail 93 are each mounted at a position of the frame 10 corresponding to the second station 12, and the flow line 20 is located between the first side rail 92 and the second side rail 93 along the Y-axis direction. For example, the first side rail 92 and the second side rail 93 are each of a plate structure; the pressing mechanism 91 and the blocking mechanism 80 are each composed of a cylinder and a slide plate driven by the cylinder, but not limited to this example. It should be noted that in fig. 2 to 4, the abutting mechanism 91 and the centering mechanism 70 are located beside the same side of the flow line 20, such as, but not limited to, beside the front side of the flow line 20 in fig. 2 to 4.

As shown in fig. 3 to 5, the pipeline 20 includes a power driver 21, a mounting shaft 22, a first wheel 23, a second wheel 24, a third wheel 25, a fourth wheel 26, a first annular transmission member 27 and a second annular transmission member 28. The mounting shaft 22 is rotatably mounted on the frame 10, and the frame 10 provides a supporting and fixing function for the mounting shaft 22; the axial direction of the mounting shaft 22 is arranged in the Y-axis direction. The first wheel 23 and the second wheel 24 are mounted on the mounting shaft 22 and spaced apart in the Y-axis direction such that the first wheel 23 and the second wheel 24 can rotate together with the mounting shaft 22. A third wheel 25 and a fourth wheel 26 are each rotatably mounted to the frame 10 and spaced apart in the Y-axis direction, with the third wheel 25 aligned with the first wheel 23 in the X-axis direction and the fourth wheel 26 aligned with the second wheel 24 in the X-axis direction. A first endless transmission member 27 is provided around the first wheel 23 and the third wheel 25, and a second endless transmission member 28 is provided around the second wheel 24 and the fourth wheel 26. The power driver 21 is arranged on the frame 10 and drives the mounting shaft 22 to rotate; therefore, the rotating mounting shaft 22 drives the first wheel 23 and the second wheel 24 to rotate synchronously, and under the cooperation of the third wheel 25 and the fourth wheel 26, the first annular transmission member 27 and the second annular transmission member 28 rotate synchronously, so as to ensure the synchronism of the two sides of the tray 200 during conveying; since the two sides of the tray 200 need to be transported synchronously, the diameters of the first wheel 23 and the second wheel 24 are the same, the diameters of the third wheel 25 and the fourth wheel 26 are the same, and preferably, the diameters of the first wheel 23 to the fourth wheel 26 are the same. The tray recovery mechanism 40 and the tray emptying mechanism 30 are respectively positioned between the first annular transmission member 27 and the second annular transmission member 28, and the transferring and emptying mechanism 50 is positioned right above the first annular transmission member 28 and the second annular transmission member 28, so that the layout of the tray emptying mechanism 30, the tray recovery mechanism 40 and the flow conveyor line 20 on the frame 10 is more reasonable and compact. For example, the first to fourth wheels 26 are belt wheels, and correspondingly, the first and second endless transmission members 28 are belts, but of course, the first to fourth wheels 26 may also be chain wheels, and correspondingly, the first and second endless transmission members 28 are chains; the power driver 21 is a motor, but not limited thereto.

As shown in fig. 3 and 4, and fig. 6 and 7, the tray discharging mechanism 30 includes a jacking assembly 30a that can be lifted and lowered along the Z-axis direction, and a tray separating assembly 30b that can be slid along the Y-axis direction and lifted and lowered along the Z-axis direction. The jacking assembly 30a is positioned between the first and second endless transport members 28 such that the jacking assembly 30a is sandwiched between the first and second endless transport members 28 to facilitate the jacking assembly 30a transferring the tray 200 onto the first and second endless transport members 28 at the first station 11. The outer sides of the first annular transmission piece 28 and the second annular transmission piece 28 are respectively provided with a disc separating component 30b, and the multiple laminated trays 200 are discharged one by one onto the first annular transmission piece 28 and the second annular transmission piece 28 by the aid of the coordination of the lifting of the jacking component 30a and the disc separating component 30b and the sliding of the disc separating component 30b, and the specific action process is as follows: the jacking assembly 30a is first raised upwardly and the jacking assembly 30a is raised above the first and second endless transfer members 28 at the first station 11; then, the tray dividing assembly 30b slides away from the top support assembly 30a along the Y-axis direction, and the top support assembly 30a continues to ascend, so that the plurality of stacked trays 200 held by the tray dividing assembly 30b are temporarily placed on the top support assembly 30 a; then, the tray dividing assembly 30b is lifted first and then slides close to the top support assembly 30a, so that the remaining trays, except the lowest tray 200, which are temporarily placed on the top support assembly 30a, of the tray dividing assembly 30b are all jacked up; next, the lifting unit 30a is lowered and reset, and the lifting unit 30a which is lowered and reset transfers the lowermost tray 200 to the first and second endless conveying members 28. Specifically, the jacking assembly 30a comprises a jacking plate 31 and a jacking cylinder 32 located right below the jacking plate 31, and an output end of the jacking cylinder 32 is fixedly connected with the jacking plate 31; the tray dividing assembly 30b comprises a Y-axis cylinder 33, a Y-axis baffle 34, a Z-axis cylinder 35 and a tray dividing plate 36, the Y-axis baffle 34 is installed at the output end of the Y-axis cylinder 33, the Z-axis cylinder 35 is installed on the Y-axis baffle 34, the tray dividing plate 36 is installed at the output end of the Z-axis cylinder 35, the tray dividing plate 36 is driven by the Z-axis cylinder 35 to extend upwards or retract downwards to the Y-axis baffle 34, the Y-axis cylinder 33 drives the Y-axis baffle 34 to be close to or far away from the top supporting plate 31 together with the Z-axis cylinder 35 and the tray dividing plate 36, and therefore reliability of tray 200 tray dividing layer by layer and orderly transfer to the first annular transmission piece 28 and the second annular transmission piece 28 is guaranteed.

As shown in fig. 3, 4, and 9, the tray collecting mechanism 40 includes a lift cylinder 41, a carrier plate 42, and a holding clamp 43 that can be switched between a holding position and a retracted position. The bearing plate 42 is positioned between the first annular transmission part 28 and the second annular transmission part 28, the jacking cylinder 41 is positioned right below the bearing plate 42, and the output end of the jacking cylinder 41 is also fixedly connected with the bearing plate 42, so that the bearing plate 42 jacks up the material tray 200 loaded at the first annular transmission part 28 and the second annular transmission part 28 at the third station 13 from below; the first and second ring-shaped transmission members 28 are respectively provided with two supporting clips 43 on the outer upper side, preferably, two supporting clips 43 on the same side are spaced from each other along the X-axis direction, so as to increase the reliability of the supporting clips 43 for the tray 200, but not limited thereto. The trays 200 placed on the first and second ring-shaped conveying members 28 at the third station 13 are pushed to push the supporting clamp 43 to pass over the supporting clamp 43 by switching from the supporting position (see the state of the rest except the supporting clamp 43 at the upper left corner in fig. 9) to the avoiding position (see the supporting clamp 43 at the upper left corner in fig. 9) in the process that the lifting cylinder 41 drives the supporting plate 42 to ascend, and then the trays 200 passing over the supporting clamp 43 are placed on the supporting clamp 43 switched to the supporting position in the process that the lifting cylinder 41 drives the supporting plate 42 to descend, so that the design is easier to realize the one-by-one upward stacking of the trays 200, and the trays 200 are taken by an operator after being stacked to a certain number, so that the efficiency is higher.

As shown in fig. 1 and 2, and fig. 10 and 11, the centering mechanism 70 includes a frame body 70a, a positioning table 70b, an X-axis positioning assembly 70c, a Y-axis positioning assembly 70d, a first motor 70e, a second motor 70f, an X-axis belt transmission assembly 70g, and a Y-axis belt transmission assembly 70 h. The positioning station 71 and the temporary storage station 72 are arranged on the positioning table 70b, the positioning table 70b is further provided with an X-axis avoiding space 73 surrounding the positioning station 71 from the X-axis direction and a Y-axis avoiding space 74 surrounding the positioning station 71 from the Y-axis direction, preferably, the positioning station 71 and the temporary storage station 72 are respectively divided into two parts, all the positioning stations 71 are aligned and separated from each other along the X-axis direction, all the temporary storage stations 72 are aligned and separated from each other along the X-axis direction, and meanwhile, the positioning station 71 is further separated from the temporary storage station 72 along the Y-axis direction so as to improve the positioning capability and the temporary storage capability. The X-axis positioning assembly 70c is movably assembled on the frame body 70a, and the X-axis positioning assembly 70c is further arranged in the X-axis avoiding space 73 in a penetrating manner; the Y-axis positioning assembly 70d is movably assembled on the frame body 70a, and the Y-axis positioning assembly 70d is further inserted into the Y-axis avoiding space 74. The first motor 70e and the second motor 70f are mounted on the frame body 70 a. The X-axis belt transmission assembly 70g and the Y-axis belt transmission assembly 70h are crossed and arranged in a staggered manner, the X-axis belt transmission assembly 70g is connected between the first motor 70e and the X-axis positioning assembly 70c, and the Y-axis belt transmission assembly 70h is connected between the second motor 70f and the Y-axis positioning assembly 70 d; the X-axis positioning component 70c is matched with the first motor 70e and the X-axis belt transmission component 70g, and the Y-axis positioning component 70d is matched with the second motor 70f and the Y-axis belt transmission component 70h to jointly realize the positioning of the X axis and the Y axis of the workpiece 210 to be printed at the positioning station 71; therefore, the centering mechanism 70 with the above structural design has the advantages of reducing the number of motors used when the X-axis and Y-axis positioning of the workpieces 210 to be printed at the two positioning stations 71 is satisfied, and achieving the purposes of improving the positioning efficiency and the positioning accuracy at lower cost and greatly reducing the burden of operators. Specifically, in fig. 10 and 11, the frame body 70a includes a base plate 701 located right below the positioning table 70b and upright posts 702 fixed between the base plate 701 and the positioning table 70b, preferably, the upright posts 702 are respectively located at four corners of the base plate 701 and the positioning table 70b to provide sufficient space; the X-axis belt transmission assembly 70g, the Y-axis belt transmission assembly 70h, the X-axis positioning assembly 70c and the Y-axis positioning assembly 70d are respectively located between the bottom plate 701 and the positioning table 70b, the first motor 70e and the second motor 70f are located right below the bottom plate 701, and output ends of the first motor 70e and the second motor 70f upwardly penetrate through the bottom plate 701, as shown in fig. 10 and 11.

As shown in fig. 8, the transfer/discharge mechanism 50 includes an X-axis traverse unit 51, a Y-axis traverse unit 52, a rotary actuator 53, a rotary base 54, a Z-axis actuator 55, and a suction nozzle 56. The Y-axis traverse component 52 is arranged on the frame 10, and the frame 10 provides a supporting function for the Y-axis traverse component 52; the X-axis traversing assembly 51 is arranged at the output end of the Y-axis traversing assembly 52, and the Y-axis traversing assembly 52 drives the X-axis traversing assembly 51 to slide in the Y-axis direction. The rotary driver 53 is arranged at the output end of the X-axis traversing assembly 51, and the X-axis traversing assembly 51 drives the rotary driver 53 to slide along the X-axis direction; the output 531 of the rotary actuator 53 is arranged vertically. The rotary base 54 is installed at the output end of the rotary driver 53, and the rotary base 54 is driven to rotate by the rotary driver 53. The Z-axis driver 55 is mounted on the rotary base 54, and the rotary base 54 drives the Z-axis driver 53 to rotate. At least two Z-axis drivers 55 are arranged, all the Z-axis drivers 55 are arranged around the output ends 531 of the rotary drivers 53, the output end 531 of each Z-axis driver 55 is vertically arranged, and the output end of each Z-axis driver 55 is respectively provided with a suction nozzle 56 so as to realize grabbing two workpieces at a time and realize position switching and exchange among the workpieces; for example, the rotation driver 53 and the Z-axis driver 55 are each a cylinder, but not limited thereto.

Compared with the prior art, by means of the cooperation of the tray emptying mechanism 30, the tray recycling mechanism 40, the flow conveyor line 20, the transfer taking and emptying mechanism 50, the robot grabbing and emptying mechanism 60 and the centering mechanism 70, in the process of loading and unloading of the pad printing machine, firstly, one tray 200 which is at the bottom and is filled with the workpiece 210 to be printed is transferred to the first end of the flow conveyor line 20 corresponding to the first station 11 by the tray emptying mechanism 30, and the tray 200 is sequentially conveyed to the second station 12 and the third station 13 by the flow conveyor line 20; when the tray 200 filled with the workpieces 210 to be printed is conveyed to the second station 12 by the flow conveyor line 20 and is suspended, the workpiece 210 to be printed on the tray 200 at the second station 12 is transferred to the positioning station 71 of the centering mechanism 70 by the transferring and taking and placing mechanism 50, then the workpiece 210 to be printed at the positioning station 71 of the centering mechanism 70 is picked and transferred to an external pad printing machine by the robot picking and placing mechanism 60, the printed workpiece 220 at the pad printing machine is transferred to the temporary storage station 72 of the centering mechanism 70 by the robot picking and placing mechanism 60, and the printed workpiece 220 at the temporary storage station 72 of the centering mechanism 70 is picked and transferred to the tray 200 at the second station 12 by the transferring and taking and placing mechanism 50; when the workpieces 210 to be printed on the trays 200 at the second station 12 are completely removed and filled with the printed workpieces 220, the tray 200 at the second station 12 is conveyed to the third station 13 by the flow line 20, and the tray emptying mechanism 30 transfers another tray 200 filled with the workpieces 210 to be printed to the first end of the flow line 20 corresponding to the first station 11, and the tray 200 is conveyed to the second station 12 by the flow line 20; the above actions are repeated continuously, so that the automatic feeding of the to-be-printed workpieces 210 on the tray 200 to the pad printer, the automatic discharging of the printed workpieces 220 on the pad printer to the tray 200 and the stacking and recycling of the tray 200 can be realized, thereby improving the efficiency, speed and quality of the production line, reducing the burden of operators, providing more basis for the plan control of production departments and more accurately arranging production of the production plan.

The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.

Claims

1. An automatic feeding and discharging device of a pad printing machine is characterized by comprising a frame, a flow conveying line, a material tray discharging mechanism, a material tray recycling mechanism, a shifting and discharging mechanism, a robot grabbing discharging mechanism and a centering mechanism with a positioning station and a temporary storage station, wherein the frame is sequentially provided with a first station, a second station and a third station which are spaced from each other along the X-axis direction, the material tray discharging mechanism is arranged at the position of the frame corresponding to the first station, the material tray recycling mechanism is arranged at the position of the frame corresponding to the third station, the flow conveying line is arranged at the frame, the first end of the flow conveying line extends to the material tray discharging mechanism, the second end of the flow conveying line extends to the material tray recycling mechanism, the centering mechanism is arranged at the position of the frame corresponding to the second station and is positioned beside the flow conveying line along the Y-axis direction, the transfer, taking and discharging mechanism is arranged at the position, corresponding to the second station, of the frame, is also positioned above the flow conveyor line and the centering mechanism, and the robot grabbing and discharging mechanism is positioned beside the centering mechanism; wherein, the tray discharging mechanism transfers a plurality of trays each provided with a workpiece to be printed and supported by the tray discharging mechanism to the first end of the flow conveyor line corresponding to the first station in sequence, the flow conveyor line conveys the trays at the first station to the second station and the third station in sequence, the transfer and discharging mechanism is responsible for transferring the workpiece to be printed on the tray at the second station to the positioning station of the centering mechanism, the transfer and discharging mechanism is also responsible for transferring the printed workpiece at the temporary storage station of the centering mechanism to the tray at the second station, the robot grabbing and discharging mechanism is responsible for transferring the workpiece to be printed at the positioning station of the centering mechanism to the external pad printer, and the robot grabbing and discharging mechanism is also responsible for grabbing the printed workpiece at the pad printer and transferring the printed workpiece to the temporary storage station of the centering mechanism, and the material tray recovery mechanism stacks the material trays filled with the printed workpieces at the third station one by one upwards.

2. The automatic loading and unloading device of the pad printing machine as claimed in claim 1, further comprising a blocking mechanism and an ejecting mechanism, wherein the blocking mechanism and the ejecting mechanism are respectively installed at a position of the frame corresponding to the second station, the blocking mechanism is located right below the flow conveyor line and can perform lifting movement along the Z-axis direction, the blocking mechanism blocks the material tray at the second station from being conveyed to the third station when being lifted, and the blocking mechanism allows the material tray at the second station to be conveyed to the third station when being lowered; the jacking mechanism is located beside the flow conveyor line along the Y-axis direction, and jacks the material tray at the second station along the Y-axis direction.

3. The pad printing machine automatic loading and unloading device according to claim 1, further comprising a first side guide rail and a second side guide rail for guiding the material trays conveyed by the flow line, wherein the first side guide rail and the second side guide rail are parallel to each other and are spaced apart from each other, the first side guide rail and the second side guide rail are respectively mounted at positions of the frame corresponding to the second stations, and the flow line is located between the first side guide rail and the second side guide rail along the Y-axis direction.

4. The automatic loading and unloading device of claim 2, wherein the flow conveyor line comprises a power driver, a mounting shaft, a first wheel, a second wheel, a third wheel, a fourth wheel, a first annular transmission member and a second annular transmission member, the mounting shaft is rotatably mounted on the frame, the axial direction of the mounting shaft is arranged along the Y-axis direction, the first wheel and the second wheel are mounted on the mounting shaft and spaced along the Y-axis direction, the third wheel and the fourth wheel are each rotatably mounted on the frame and spaced along the Y-axis direction, the third wheel is aligned with the first wheel along the X-axis direction, the fourth wheel is aligned with the second wheel along the X-axis direction, the first annular transmission member is wound around the first wheel and the third wheel, and the second annular transmission member is wound around the second wheel and the fourth wheel, the power driver is arranged on the frame and drives the mounting shaft to rotate, the tray recovery mechanism and the tray discharging mechanism are respectively positioned between the first annular transmission piece and the second annular transmission piece, and the transferring, taking and discharging mechanism is positioned right above the first annular transmission piece and the second annular transmission piece.

5. The automatic loading and unloading device of claim 4, wherein the tray discharging mechanism comprises a top support component capable of lifting along the Z-axis direction and a tray separating component capable of sliding along the Y-axis direction and lifting along the Z-axis direction, the top support component is positioned between the first annular transmission part and the second annular transmission part, the tray separating components are respectively arranged on the outer sides of the first annular transmission part and the second annular transmission part, and the multiple stacked trays are discharged one by one on the first annular transmission part and the second annular transmission part by virtue of the lifting of the top support component and the tray separating components and the sliding cooperation of the tray separating components.

6. The automatic loading and unloading device of the pad printing machine as claimed in claim 5, wherein the jacking assembly comprises a jacking plate and a jacking cylinder positioned under the jacking plate, and an output end of the jacking cylinder is fixedly connected with the jacking plate; the tray dividing assembly comprises a Y-axis cylinder, a Y-axis baffle, a Z-axis cylinder and a tray dividing plate, the Y-axis baffle is installed at the output end of the Y-axis cylinder, the Z-axis cylinder is installed on the Y-axis baffle, the tray dividing plate is installed at the output end of the Z-axis cylinder, the tray dividing plate is driven by the Z-axis cylinder to extend upwards or retract downwards to lift the Y-axis baffle, and the Y-axis cylinder drives the Y-axis baffle, together with the Z-axis cylinder and the tray dividing plate, to be close to or far away from the top supporting plate.

7. The automatic loading and unloading device of claim 4, wherein the tray recovery mechanism comprises a jacking cylinder, a bearing plate and a bearing clamp capable of switching between a bearing position and an avoiding position, the bearing plate is positioned between the first annular transmission part and the second annular transmission part, the jacking cylinder is positioned right below the bearing plate, the output end of the jacking cylinder is fixedly connected with the bearing plate, and the bearing clamp is respectively arranged above the outer sides of the first annular transmission part and the second annular transmission part; and the material trays placed on the first and second annular transmission parts at the third station push the bearing clamp to pass through the bearing clamp when the jacking cylinder drives the bearing plate to rise upwards, and the material trays passing through the bearing clamp are placed on the bearing clamp switched to the bearing position when the jacking cylinder drives the bearing plate to fall.

8. The automatic loading and unloading device of claim 1, wherein the centering mechanism comprises a frame body, a positioning table, an X-axis positioning assembly, a Y-axis positioning assembly, a first motor, a second motor, an X-axis belt transmission assembly and a Y-axis belt transmission assembly, the positioning station and the temporary storage station are arranged on the positioning table, the positioning table is further provided with an X-axis avoiding space surrounding the positioning station from the X-axis direction and a Y-axis avoiding space surrounding the positioning station from the Y-axis direction, the X-axis positioning assembly is movably assembled on the frame body, the X-axis positioning assembly is further arranged in the X-axis avoiding space in a penetrating manner, the Y-axis positioning assembly is movably assembled on the frame body, the Y-axis positioning assembly is further arranged in the Y-axis avoiding space in a penetrating manner, and the first motor and the second motor are arranged on the frame body, the X-axis belt transmission assembly and the Y-axis belt transmission assembly are crossed and arranged in a staggered mode, the X-axis belt transmission assembly is connected between the first motor and the X-axis positioning assembly, the Y-axis belt transmission assembly is connected between the second motor and the Y-axis positioning assembly, the X-axis positioning assembly is matched with the first motor and the X-axis belt transmission assembly and the Y-axis positioning assembly is matched with the second motor and the Y-axis belt transmission assembly to jointly realize positioning of an X axis and a Y axis of a workpiece to be printed at the positioning station.

9. The automatic loading and unloading device of claim 1, wherein the transfer pick-and-place mechanism comprises an X-axis traverse unit, a Y-axis traverse unit, a rotary driver, a rotary base, a Z-axis driver and a suction nozzle, the Y-axis traversing component is arranged on the frame, the X-axis traversing component is arranged on the output end of the Y-axis traversing component, the rotary driver is arranged at the output end of the X-axis traversing assembly, the output end of the rotary driver is vertically arranged, the rotary seat is arranged at the output end of the rotary driver, the Z-axis driver is arranged on the rotary seat, the Z-axis drivers are at least two, all the Z-axis drivers surround the output ends of the rotary drivers, the output ends of the Z-axis drivers are vertically arranged, and the output ends of the Z-axis drivers are respectively provided with the suction nozzles.

10. The automatic feeding and discharging equipment of the pad printing machine as claimed in claim 1, further comprising a safety protection door mechanism, a first folding and unfolding operating platform and a second folding and unfolding operating platform, wherein the first folding and unfolding operating platform is installed on the frame and is adjacent to the first end of the flow line, the second folding and unfolding operating platform is installed on the frame and is adjacent to the second end of the flow line, and the safety protection door mechanism is located beside the side where the robot grabs the feeding and discharging mechanism and is provided with an emergency stop switch for controlling the emergency stop of the automatic feeding and discharging equipment of the pad printing machine.