Three-color full-automatic printing machine for outer surface of cosmetic bottle

Abstract

The invention relates to a full-automatic three-color printing machine for the outer surface of a cosmetic bottle, which comprises a machine base of the printing machine, a rotating table is mounted on the machine base, a plurality of clamping and rotating mechanisms are fixedly connected to the rotating table respectively, each clamping and rotating mechanism comprises a base, a guide bracket is fixedly connected to the outer side of each base, and a transmission shaft is inserted into the middle of each guide bracket; the inner end of the transmission shaft is connected into the base through a bearing and fixedly connected with a rotating shaft of the rotating servo motor through a coupler, and the outer end of the transmission shaft extends out of the guide support and is fixedly connected with an inner butt chuck. Circular guide rails parallel to the transmission shaft are inserted into the two ends of the guide support respectively, clamping plates are fixedly connected to the outer ends of the two circular guide rails, and outer opposite chucks right opposite to the inner opposite chucks are pivoted to the middles of the clamping plates. According to the three-color automatic printing machine, an effective positioning and rotation control structure is designed, initial position positioning and rotation control of the cosmetic bottle are effectively achieved, and the printing requirements of the same part or different parts of multi-color printing are met.

Description

Technical field:

[0001] The invention relates to the technical field of cosmetic bottle printing equipment, and more specifically to a three-color full-automatic printing machine for the outer surface of a cosmetic bottle. Background technology:

[0002] Silk screen printing on cosmetic bottles is a commonly used cosmetic packaging decoration process. Patterns and texts are printed on the surface of cosmetic bottles through silk screen printing technology to enhance the aesthetics and brand recognition of the products. Currently, there are devices on the market for multi-color printing on the outer surface of cosmetic bottles, which use multiple sets of silk screen printing components to independently silk screen print the outer surface of cosmetic bottles in batches; however, the existing multi-color printing mostly prints patterns or texts of different colors on the outer surface of cosmetic bottles on different sides. Due to the lack of effective positioning and effective bottle rotation control, when multi-color texts are printed on the same side of the bottle, they are not staggered, but overlapped, resulting in defective products. Therefore, it is necessary to improve the positioning and rotation control of the multi-color printing machine to meet the printing and manufacturing of different color texts on the same side or different sides of the bottle. Summary of the invention:

[0003] The purpose of the present invention is to address the deficiencies of the prior art and to provide a three-color fully automatic printing machine for the outer surface of a cosmetic bottle. The three-color automatic printing machine is designed with an effective positioning and rotation control structure, which effectively realizes the initial position positioning and rotation control of the cosmetic bottle and meets the printing needs of multi-color printing on the same or different parts.

[0004] A three-color full-automatic printing machine for the outer surface of a cosmetic bottle, comprising a base of the printing machine, on which a rotary worktable is installed. Around the rotary worktable, there are successively arranged a feeding station, a surface heat treatment station, a visual inspection station, a first-color printing station, a first-color UV curing station, a second-color printing station, a second-color UV curing station, a third-color printing station, a third-color UV curing station and a discharging station. In the feeding station and the discharging station, there are respectively arranged flip-type loading and unloading mechanisms. In the surface heat treatment station, there is arranged a lifting-type flame treatment mechanism. In the visual inspection station, there is a visual inspection mechanism. In the first-color printing station, the second-color printing station and the third-color printing station, there are respectively arranged a first silk-screen printing mechanism, a second silk-screen printing mechanism and a third silk-screen printing mechanism. In the first-color UV curing station, the second-color UV curing station and the third-color UV curing station, there are respectively arranged a first drying and curing mechanism, a second drying and curing mechanism and a third drying and curing mechanism. On the rotary worktable, there are respectively fixed several clamping and rotating mechanisms opposite to the loading and unloading mechanisms, the flame treatment mechanism, the visual inspection mechanism, the first silk-screen printing mechanism, the first drying and curing mechanism, the second silk-screen printing mechanism, the second drying and curing mechanism, the third silk-screen printing mechanism and the third drying and curing mechanism. The clamping and rotating mechanism comprises a base, on the outer side of which a guiding bracket is fixedly connected. In the middle of the guiding bracket, a transmission shaft is inserted. The inner end of the transmission shaft is connected in the base through a bearing and is fixedly connected with the rotating shaft of a rotating servo motor through a coupling. The outer end extends out of the guiding bracket and is fixedly connected with an inner clamping head. At both ends of the guiding bracket, there are respectively inserted circular guide rails parallel to the transmission shaft. The outer ends of the two groups of circular guide rails are fixedly connected with a clamping plate. In the middle of the clamping plate, an outer clamping head opposite to the inner clamping head is pivotally connected. The inner ends of the two groups of circular guide rails are distributed on both sides of the base and are respectively inserted and fixed at both ends of a "U"-shaped linkage bracket. In the middle of the linkage bracket, a lead screw nut is inserted and fixed. A ball screw is screwed in the lead screw nut. The two ends of the ball screw are hinged on the base through bearing seats. The rear end of the ball screw is fixedly connected with the rotating shaft of a clamping servo motor through a coupling. The clamping servo motor is fixedly connected on the base;

[0005] The loading and unloading mechanism comprises a "冂"-shaped vertical frame. Inside the vertical frame, there is a vertical manipulator. On the side wall at the top of the vertical frame, a flip motor is fixedly connected. The rotating shaft of the flip motor is connected with the manipulator and drives the manipulator to perform a 90° flip. There are two groups of opposite clamping claws on the manipulator. The clamping claw comprises a horizontal claw rod. On the inner side wall at the end of the claw rod, a clamping block is formed. On the inner side wall of the clamping block, a vertical and V-shaped clamping opening is formed. On both side walls of the clamping opening, several vertically distributed balls are embedded. At the bottom of the clamping opening, a socket is formed, and a sponge block is inserted in the socket.

[0006] Preferably, there are 10 groups of the clamping and rotating mechanisms, and the clamping and rotating mechanisms are evenly distributed in a ring around the central axis of the rotary worktable;

[0007] A linear feeding conveyor belt and a feeding conveyor belt are respectively arranged in the loading station and the unloading station of the printing machine, and the loading and unloading mechanisms are respectively erected and fixed on the feeding conveyor belt and the feeding conveyor belt frames.

[0008] Preferably, the visual inspection mechanism includes a ball screw conveying mechanism, and an inspection industrial camera is fixedly connected to a movable seat on the ball screw conveying mechanism. The inspection industrial camera is located on the lower side of the clamping and rotating mechanism and is arranged between the inner pair of chucks and the outer pair of chucks.

[0009] Preferably, the clamping and rotating mechanism on the printing machine is loaded with a horizontally arranged cosmetic bottle, the bottle mouth of the cosmetic bottle faces inward and is formed with a positioning notch, and the cosmetic bottle pair is clamped between the inner pair of clamps and the outer pair of clamps;

[0010] A visual positioning mechanism which is inclined and faces the positioning notch is provided in the loading station. The visual positioning mechanism includes an aperture located below the clamping and rotating mechanism, and a positioning station camera is provided in the middle of the aperture.

[0011] Preferably, a hinged support is provided at the oblique rear of the positioning station camera, a hinged notch is formed on the hinged support, an oblique support arm is inserted in the hinged notch, an upper adjustment groove with a T-shaped cross section is formed on the upper part of the support arm, a plurality of T-bolts are inserted in the upper adjustment groove, the T-bolts extend out of the support arm, an L-shaped mounting seat is inserted, and a locking nut is screwed through the mounting seat to be fixed;

[0012] The positioning station camera is fixedly connected to the mounting seat, triangular ribs are fixedly connected to both sides of the mounting seat, an L-shaped support frame is fixedly connected to the side wall of the rib, and the upper end of the support frame is fixedly connected to the aperture;

[0013] A lower adjustment groove is formed on the lower part of the support arm, and guide grooves are formed on the inner walls on both sides of the lower adjustment groove. An adjustment seat is inserted in the lower adjustment groove of the support arm, and guide pillars are formed on both sides of the adjustment seat. The guide pillars are respectively inserted in the guide grooves of the support arm. A vertical adjustment bolt is screwed on the adjustment seat; a horizontal mounting plate is formed on the hinged support, and a plurality of mounting holes are formed on the mounting plate. Mounting bolts are inserted in the mounting holes, and the mounting bolts are screwed and fixed on the base of the printing press; the upper end of the adjusting bolt is pivotally connected to the mounting plate.

[0014] Preferably, the mounting plate is against the machine base, the adjusting bolt is a hexagon socket bolt, a step hole is formed on the mounting plate directly above the adjusting bolt, the upper end of the adjusting bolt is inserted into the mounting plate of the mounting plate, and the lower end is formed with a regular hexagonal limit head.

[0015] Preferably, the outer chuck is T-shaped, a center column is inserted and fixed inside the outer chuck, and the outer end of the center column is connected to the clamping plate through a bearing;

[0016] A D-shaped plug is formed on the outer end surface of the inner pair of chucks, and a magnetic chuck with a conical head is provided on the outer side of the inner pair of chucks. A D-shaped socket is formed on the magnetic chuck. The outer end of the plug is inserted into the socket of the magnetic chuck, and the rear end surface of the socket is sucked against the annular magnet block, and the magnet block sleeve is fixed on the plug.

[0017] Preferably, a transverse limiting bolt is threadedly connected to the claw rod of the clamp, and the heads of the limiting bolts on the two groups of claw rods abut against each other; a nut is threadedly connected to the limiting bolt, and the nut is pressed against the claw rod.

[0018] The beneficial effects of the present invention are:

[0019] This three-color automatic printing machine is designed with an effective positioning and rotation control structure, which effectively realizes the initial position positioning and rotation control of the cosmetic bottle, and meets the printing needs of the same or different parts of multi-color printing. Description of the drawings:

[0020] Figure 1 It is a schematic diagram of the structure of the present invention from a top view;

[0021] Figure 2 It is a structural schematic diagram of the inner clamping and rotating mechanism part of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the visual positioning mechanism part of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the inner clamping jaw part of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the cosmetic bottle clamped by the present invention.

[0025] In the figure: 1. machine base; 2. rotary worktable; 3. clamping and rotating mechanism; 4. cosmetic bottle; 5. loading and unloading mechanism; 6. visual positioning mechanism; 7. flame treatment mechanism; 8. visual inspection mechanism; 9. first screen printing mechanism; 10. first drying and curing mechanism; 11. second screen printing mechanism; 12. second drying and curing mechanism; 13. third screen printing mechanism; 14. third drying and curing mechanism; 15. discharge conveyor belt; 16. feed conveyor belt. Specific implementation method:

[0026] Example: See Figures 1 to 5As shown in the figure, a three-color full-automatic printing machine for the outer surface of a cosmetic bottle includes the machine base 1 of the printing machine. A rotary worktable 2 is installed on the machine base 1. Around the rotary worktable 2, there are successively arranged a loading station, a surface heat treatment station, a vision inspection station, a first-color printing station, a first-color UV curing station, a second-color printing station, a second-color UV curing station, a third-color printing station, a third-color UV curing station, and an unloading station. In the loading station and the unloading station, there are respectively arranged flipping type loading and unloading mechanisms 5. In the surface heat treatment station, there is arranged a lifting type flame treatment mechanism 7. In the vision inspection station, there is a vision inspection mechanism 8. In the first-color printing station, the second-color printing station, and the third-color printing station, there are respectively arranged a first silk screen printing mechanism 9, a second silk screen printing mechanism 11, and a third silk screen printing mechanism 13. In the first-color UV curing station, the second-color UV curing station, and the third-color UV curing station, there are respectively arranged a first drying and curing mechanism 10, a second drying and curing mechanism 12, and a third drying and curing mechanism 14. On the rotary worktable 2, there are respectively fixed several clamping and rotating mechanisms 3 opposite to the loading and unloading mechanisms 5, the flame treatment mechanism 7, the vision inspection mechanism 8, the first silk screen printing mechanism 9, the first drying and curing mechanism 10, the second silk screen printing mechanism 11, the second drying and curing mechanism 12, the third silk screen printing mechanism 13, and the third drying and curing mechanism 14. The clamping and rotating mechanism 3 includes a base 31. On the outer side of the base 31, a guiding support 32 is fixedly connected. In the middle of the guiding support 32, a transmission shaft 33 is inserted. The inner end of the transmission shaft 33 is connected in the base 31 through a bearing and is fixedly connected with the rotating shaft of a rotating servo motor 38 through a coupling. The outer end extends out of the guiding support 32 and is fixedly connected with an inner clamping head 34. At both ends of the guiding support 32, there are respectively inserted circular guide rails 35 parallel to the transmission shaft 33. At the outer ends of the two groups of circular guide rails 35, a clamping plate 36 is fixedly connected. In the middle of the clamping plate 36, an outer clamping head 37 opposite to the inner clamping head 34 is pivotally connected. The inner ends of the two groups of circular guide rails 35 are distributed on both sides of the base 31 and are respectively inserted and fixed at both ends of a "U"-shaped linkage support 311. In the middle of the linkage support 311, a lead screw nut is inserted and fixed. A ball screw is internally threaded in the lead screw nut. The two ends of the ball screw are hinged on the base 31 through bearing seats. The rear end of the ball screw is fixedly connected with the rotating shaft of a clamping servo motor 310 through a coupling. The clamping servo motor 310 is fixedly connected to the base 31;

[0027] The loading and unloading mechanism 5 includes a "冂"-shaped vertical frame. Inside the vertical frame, there is a vertical manipulator. On the side wall at the top of the vertical frame, a flipping motor is fixedly connected. The rotating shaft of the flipping motor is connected to the manipulator and drives the manipulator to perform a 90° flip. There are two groups of opposite clamping claws on the manipulator. The clamping claws include a horizontal claw rod 51. On the inner side wall at the end of the claw rod 51, a clamping block 511 is formed. On the inner side wall of the clamping block 511, a vertical and V-shaped clamping opening is formed. On both side walls of the clamping opening, several vertically distributed balls 52 are respectively embedded. At the bottom of the clamping opening, a socket 512 is formed. A sponge block 53 is inserted into the socket 512.

[0028] The clamping and rotating mechanisms 3 are provided with 10 groups, and the clamping and rotating mechanisms 3 are evenly distributed in a ring shape around the central axis of the rotary table 2, and are directly opposite to each of the above-mentioned workstations.

[0029] A linear feed conveyor belt 16 and a discharge conveyor belt 15 are respectively arranged in the loading station and the unloading station of the printing machine. The loading and unloading mechanisms 5 are respectively mounted and fixed on the frames of the feed conveyor belt 16 and the discharge conveyor belt 15. The loading and unloading mechanisms 5 can clamp the cosmetic bottles 4 placed upright on the feed conveyor belt 16, and similarly, the loading and unloading mechanisms 5 can place the cosmetic bottles 4 on the discharge conveyor belt 15.

[0030] The visual inspection mechanism 8 includes a ball screw conveying mechanism, and an industrial inspection camera is fixedly connected to a movable seat on the ball screw conveying mechanism. The industrial inspection camera is located on the lower side of the clamping and rotating mechanism 3 and is arranged between the inner pair of chucks 34 and the outer pair of chucks 37; the industrial inspection camera inspects the outer surface of the cosmetic bottle 4 to prevent other problems from occurring on the bottle body after heat treatment.

[0031] The clamping rotating mechanism 3 on the printing machine is loaded with a cosmetic bottle 4 arranged horizontally, the mouth of the cosmetic bottle 4 faces inward and is formed with a positioning notch 41, and the cosmetic bottle 4 is clamped between the inner pair of clamps 34 and the outer pair of clamps 37;

[0032] The loading station is provided with a visual positioning mechanism 6 which is inclined and facing the positioning notch 41. The visual positioning mechanism 6 includes an aperture 62 located below the clamping and rotating mechanism 3. A positioning station camera 61 is provided in the middle of the aperture 62. The positioning station camera 61 can detect the position of the positioning notch 41, and then feedback control the rotation of the cosmetic bottle 4 to achieve that the positioning notch 41 is directly below the bottle body, thereby achieving the positioning of the printing position and avoiding the overlapping problem of three printings of different colors.

[0033] A hinged support 63 is provided at the oblique rear of the positioning station camera 61, and a hinged notch 631 is formed on the hinged support 63, and an oblique support arm 64 is inserted in the hinged notch 631. An upper adjustment groove 641 with a T-shaped cross section is formed on the upper part of the support arm 64, and a plurality of T-shaped bolts 69 are inserted in the upper adjustment groove 641. The T-shaped bolts 69 extend out of the support arm 64 and are inserted into an L-shaped mounting seat 65 and pass through the mounting seat 65 to be screwed and fixed with a locking nut 610;

[0034] The positioning station camera 61 is fixedly connected to the mounting seat 65, and triangular ribs 611 are fixedly connected to both sides of the mounting seat 65. An L-shaped support frame 612 is fixedly connected to the side wall of the rib 611, and the upper end of the support frame 612 is fixedly connected to the aperture 62;

[0035] A lower adjusting groove 642 is formed at the lower part of the support arm 64, and guide grooves 643 are formed on the inner walls on both sides of the lower adjusting groove 642. An adjusting seat 67 is inserted in the lower adjusting groove 642 of the support arm 64, and guide pillars are formed on both sides of the adjusting seat 67. The guide pillars are respectively inserted in the guide grooves 643 of the support arm 64, and a vertical adjusting bolt 68 is screwed on the adjusting seat 67; a horizontal mounting plate 632 is formed on the hinged support 63, and a plurality of mounting holes 633 are formed on the mounting plate 632. Mounting bolts are inserted in the mounting holes 633, and the mounting bolts are screwed and fixed on the base 1 of the printing press; the upper end of the adjusting bolt 68 is pivotally connected to the mounting plate 632, and the angle adjustment of the positioning station camera 61 and the aperture 62 can be achieved by adjusting the adjusting bolt 68, and the position of the mounting seat 65 can be moved and adjusted to achieve the positioning station camera 61 close to the positioning notch 41, thereby improving the positioning accuracy.

[0036] The mounting plate 632 is against the machine base 1, and the adjusting bolt 68 adopts a hexagon socket bolt. A step hole 634 is formed on the mounting plate 632 directly above the adjusting bolt 68. The upper end of the adjusting bolt 68 is inserted into the mounting plate 632 of the mounting plate 632, and the lower end is formed with a regular hexagonal limit head 681, that is, the pivot structure of the adjusting bolt 68.

[0037] The outer chuck 37 is T-shaped, a center column is inserted and fixed inside the outer chuck 37, and the outer end of the center column is connected to the clamping plate 36 through a bearing;

[0038] A D-shaped plug 341 is formed on the outer end surface of the inner pair of chucks 34, and a magnetic chuck 39 with a conical head is provided on the outer side of the inner pair of chucks 34. A D-shaped socket 391 is formed on the magnetic chuck 39. The outer end of the plug 341 is inserted into the socket 391 of the magnetic chuck 39. The rear end surface of the socket 391 is sucked against the annular magnet block 312. The magnet block 312 is fixed on the plug 341 through a sleeve. The magnetic chuck 39 is easy to replace to correspond to bottles of different sizes.

[0039] At the same time, its shape and structure will not block the lens of the positioning station camera 61.

[0040] A transverse limiting bolt 34 is screwed on the claw rod 51 of the clamping jaw 5, and the heads of the limiting bolts 34 on the two groups of claw rods 51 are pressed against each other; a nut 35 is screwed on the limiting bolt 34, and the nut 35 is pressed against the claw rod 51. A plurality of dust hood plates 18 are provided at the loading station between the feeding conveyor belt 16 and the machine base 1. The dust hood plates 18 can absorb dust attached to the outer surface of the cosmetic bottle 4 by suction.

[0041] Working principle: This structure is a three-color fully automatic printing machine for the outer surface of cosmetic bottles. Its main technical point is embodied in the clamping and rotating mechanism 3 installed on the rotary table 2 and moving between various stations. The clamping and rotating mechanism 3 clamps the bottle body of the cosmetic bottle 4 using an outer pair of chucks 37 and an inner pair of chucks 34 (the inner pair of chucks 34 is the positioning reference of the inner end of the bottle body, and the movement stroke of the outer pair of chucks 37 is adjustable, and bottles of different sizes can be clamped). The positioning notch 41 on the cosmetic bottle 4 can be detected by the visual positioning mechanism 6 set in the loading station, and then the angle of the rotating cosmetic bottle 4 is controlled, and the angle of the cosmetic bottle 4 is adjusted to achieve the position of the positioning notch 41 facing downward, thereby positioning the outer surface of the cosmetic bottle 4, and the rotary servo motor 38 that controls the rotation of the cosmetic bottle 4 can control the rotation speed and angle of the cosmetic bottle 4; to meet the printing needs of the outer surface of the cosmetic bottle 4;

[0042] At the same time, the clamping claws on the loading and unloading mechanism 5 are adapted to the clamping rotating mechanism 3, and the clamping claws adopt a V-shaped clamping mouth. No matter when clamping cosmetic bottles 4 of different diameters, the distance from the center of the cosmetic bottle 4 to the claw rod 51 on the clamping claw is consistent, so when the cosmetic bottle 4 is turned over and enters the outer chuck 37 and the inner chuck 34, it can be ensured that the central axis of the inner chuck 34, the central axis of the outer chuck 37 and the central axis of the cosmetic bottle 4 are in the same straight line; that is, the cosmetic bottle 4 is automatically aligned, and the operation is more stable.

[0043] When the outer chuck 37 moves to push the cosmetic bottle 4, since the contact part between the clamp and the cosmetic bottle 4 is the ball 52, no scratches will be caused on the cosmetic bottle 4; at the same time, in order to prevent the cosmetic bottle 4 from moving when the cosmetic bottle 4 is turned over for loading or unloading, a sponge 53 is added to contact the cosmetic bottle 4 to restrict the cosmetic bottle 4 from moving under gravity.

[0044] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore, the scope of protection of the present invention shall be as set forth in the claims of the present invention.

Claims

1. A three-color fully automatic printing machine for the outer surface of a cosmetic bottle, comprising a printing machine base (1), a rotary table (2) being installed on the base (1), a loading station, a surface heat treatment station, a visual inspection station, a first color printing station, a first color UV curing station, a second color printing station, a second color UV curing station, a third color printing station, a third color UV curing station and a unloading station being sequentially arranged around the rotary table (2), the loading station and the unloading station being respectively provided with a flip loading and unloading mechanism (5), the surface heat treatment station being provided with a lifting flame treatment mechanism (7), the visual inspection station being provided with a visual inspection mechanism (8), the first color printing station, the second color printing station and the third color printing station being respectively provided with a lifting flame treatment mechanism (7), the visual inspection station being provided with a visual inspection mechanism (8), the first color printing station, the second color printing station and the third color printing station being respectively provided with a lifting flame treatment mechanism (7), the visual inspection station being provided with a lifting flame treatment mechanism (7 ... A first screen printing mechanism (9), a second screen printing mechanism (11) and a third screen printing mechanism (13) are provided, and a first drying and curing mechanism (10), a second drying and curing mechanism (12) and a third drying and curing mechanism (14) are provided in the first color UV curing station, the second color UV curing station and the third color UV curing station respectively. A plurality of clamping and rotating mechanisms (3) are fixedly connected to the rotary table (2) and are opposite to the loading and unloading mechanism (5), the flame treatment mechanism (7), the visual inspection mechanism (8), the first screen printing mechanism (9), the first drying and curing mechanism (10), the second screen printing mechanism (11), the second drying and curing mechanism (12), the third screen printing mechanism (13) and the third drying and curing mechanism (14), and the characteristics are as follows: The clamping and rotating mechanism (3) includes a base (31). A guiding bracket (32) is fixedly connected to the outer side of the base (31). A transmission shaft (33) is inserted in the middle of the guiding bracket (32). The inner end of the transmission shaft (33) is connected to the inside of the base (31) through a bearing and is fixedly connected to the rotating shaft of a rotating servo motor (38) through a coupling. The outer end of the transmission shaft (33) extends out of the guiding bracket (32) and is fixedly connected to an inner clamping head (34). Parallel to the transmission shaft (33), circular guide rails (35) are respectively inserted at both ends of the guiding bracket (32). The outer ends of the two groups of circular guide rails (35) are fixedly connected to a clamping plate (36). An outer clamping head (37) facing the inner clamping head (34) is pivotally connected to the middle of the clamping plate (36). The inner ends of the two groups of circular guide rails (35) are distributed on both sides of the base (31) and are respectively inserted and fixed at both ends of a "U"-shaped linkage bracket (311). A lead screw nut is inserted and fixed in the middle of the linkage bracket (311). A ball screw is screwed inside the lead screw nut. The two ends of the ball screw are hinged to the base (31) through bearing seats. The rear end of the ball screw is fixedly connected to the rotating shaft of a clamping servo motor (310) through a coupling. The clamping servo motor (310) is fixedly connected to the base (31). The loading and unloading mechanism (5) includes an "I"-shaped vertical frame. A vertical manipulator is arranged inside the vertical frame. A flipping motor is fixedly connected to the side wall at the top of the vertical frame. The rotating shaft of the flipping motor is connected to the manipulator and drives the manipulator to perform a 90° flip. Two groups of opposite clamping claws are arranged on the manipulator. The clamping claw includes a horizontal claw rod (51). A clamping block (511) is formed on the inner side wall of the end of the claw rod (51). A vertical and V-shaped clamping opening is formed on the inner side wall of the clamping block (511). A number of vertically distributed balls (52) are respectively embedded on both side walls of the clamping opening. An insertion opening (512) is formed at the bottom of the clamping opening. A sponge block (53) is inserted into the insertion opening (512).

2. The three-color fully automatic printing machine for the outer surface of a cosmetic bottle according to claim 1, characterized in that: There are 10 groups of the clamping and rotating mechanisms (3), and the clamping and rotating mechanisms (3) are evenly distributed in a ring around the central axis of the rotary table (2). Linear feeding conveyors (16) and discharging conveyors (15) are respectively arranged in the loading station and the unloading station of the printing machine. The loading and unloading mechanism (5) is respectively erected and fixed on the frames of the feeding conveyor (16) and the discharging conveyor (15).

3. The three-color fully automatic printing machine for the outer surface of a cosmetic bottle according to claim 1, characterized in that: The vision inspection mechanism (8) includes a ball screw conveying mechanism. An inspection industrial camera is fixedly connected to the moving seat on the ball screw conveying mechanism. The inspection industrial camera is located below the clamping and rotating mechanism (3) and is arranged between the inner clamping head (34) and the outer clamping head (37).

4. The three-color fully automatic printing machine for the outer surface of a cosmetic bottle according to claim 1, characterized in that: A horizontally arranged cosmetic bottle (4) is loaded on the clamping and rotating mechanism (3) of the printing machine. The mouth of the cosmetic bottle (4) faces inwards and is formed with a positioning notch (41). The cosmetic bottle (4) is clamped between the inner clamping head (34) and the outer clamping head (37). The loading station is provided with a visual positioning mechanism (6) which is inclined and faces the positioning notch (41). The visual positioning mechanism (6) includes an aperture (62) located below the clamping rotation mechanism (3), and a positioning station camera (61) is provided in the middle of the aperture (62).

5. The three-color fully automatic printing machine for the outer surface of cosmetic bottles according to claim 4, characterized in that: A hinged support (63) is provided at the oblique rear of the positioning station camera (61), a hinged notch (631) is formed on the hinged support (63), an oblique support arm (64) is inserted in the hinged notch (631), an upper adjustment groove (641) with a T-shaped cross section is formed on the upper part of the support arm (64), a plurality of T-shaped bolts (69) are inserted in the upper adjustment groove (641), the T-shaped bolts (69) extend out of the support arm (64), an L-shaped mounting seat (65) is inserted, and a locking nut (610) is screwed and fixed to the mounting seat (65); The positioning station camera (61) is fixedly connected to the mounting seat (65), triangular ribs (611) are fixedly connected to both sides of the mounting seat (65), an L-shaped support frame (612) is fixedly connected to the side wall of the ribs (611), and the upper end of the support frame (612) is fixedly connected to the aperture (62); The support arm (64) is formed with a lower adjustment groove (642) at the lower part, and guide grooves (643) are formed on the inner walls on both sides of the lower adjustment groove (642). An adjustment seat (67) is inserted into the lower adjustment groove (642) of the support arm (64), and guide pillars are formed on both sides of the adjustment seat (67). The guide pillars are respectively inserted into the guide grooves (643) of the support arm (64). A vertical adjustment bolt (68) is screwed on the adjustment seat (67); a horizontal mounting plate (632) is formed on the hinged support (63), and a plurality of mounting holes (633) are formed on the mounting plate (632). Mounting bolts are inserted into the mounting holes (633), and the mounting bolts are screwed and fixed on the machine base (1) of the printing press; the upper end of the adjusting bolt (68) is pivotally connected to the mounting plate (632).

6. The three-color fully automatic printing machine for the outer surface of cosmetic bottles according to claim 5, characterized in that: The mounting plate (632) is against the machine base (1), the adjusting bolt (68) is a hexagon socket bolt, a stepped hole (634) is formed on the mounting plate (632) directly above the adjusting bolt (68), the upper end of the adjusting bolt (68) is inserted into the mounting plate (632), and the lower end is formed with a regular hexagonal limit head (681).

7. The three-color fully automatic printing machine for the outer surface of cosmetic bottles according to claim 1, characterized in that: The outer chuck (37) is T-shaped, a center column is inserted and fixed inside the outer chuck (37), and the outer end of the center column is connected to the clamping plate (36) through a bearing; A D-shaped plug (341) is formed on the outer end surface of the inner pair of chucks (34), a magnetic chuck (39) with a conical head is provided on the outer side of the inner pair of chucks (34), a D-shaped socket (391) is formed on the magnetic chuck (39), the outer end of the plug (341) is inserted into the socket (391) of the magnetic chuck (39), the rear end surface of the socket (391) is sucked against a circular magnet block (312), and the magnet block (312) is fixed on the plug (341) by a sleeve.

8. The three-color fully automatic printing machine for the outer surface of cosmetic bottles according to claim 1, characterized in that: A transverse limiting bolt (34) is screwed onto the claw rod (51) of the clamping claw, and the heads of the limiting bolts (34) on the two groups of claw rods (51) are pressed against each other; a nut (35) is screwed onto the limiting bolt (34), and the nut (35) is pressed against the claw rod (51).

Images