A linear printing device and a surface treatment process for a cosmetic bottle

Abstract

The present application relates to a linear printing device and a surface treatment process for a cosmetic bottle. A linear printing device includes a main body, a label mounting mechanism, a visual inspection and rotation adjustment mechanism, and a screen printing mechanism; a conveying line is installed on the main body, and the conveying line is used for conveying bottles; the label mounting mechanism, the visual inspection and rotation adjustment mechanism, and the screen printing mechanism are sequentially arranged on the main body along the length direction of the conveying line; the label mounting mechanism is used for temporarily mounting a set mark on the circumferential side of a bottle with a missing pattern; the visual inspection and rotation adjustment mechanism is used for rotating the bottle and stopping rotating the bottle after detecting a marker on the circumferential side of the bottle; the screen printing mechanism is used for printing a pattern on the circumferential side of the bottle. The present application can accurately perform secondary covering printing operations on cosmetic bottles with missing printed patterns, improve the problem of batch rejection of printed products during the printing process of cosmetic bottles, and reduce production costs.

Description

Technical Field

[0001] This application relates to the field of printing technology, and in particular, to a linear printing device and a surface treatment process for cosmetic bottles. Background Art

[0002] Printing is a comprehensive process that combines chemistry, physics, and mechanical techniques. Its core lies in making a color paste from dyes or coatings and precisely applying it to the surface of textiles or other objects to form patterns. In the field of cosmetic bottle manufacturing, printing machines have become the main tools for pattern printing, usually including a main body structure, a screen printing station, and a curing station. A conveyor line is installed on the main body structure. Driven by the conveyor line, cosmetic bottles pass through the screen printing station, and through the cooperation of the screen and the squeegee, as well as the rotation of the cosmetic bottles themselves, the printing of patterns on the circumferential side of the bottle body is achieved, and then they enter the curing station for pattern curing.

[0003] However, during the batch printing process of cosmetic bottles, some challenges often occur. For example, the ink in the screen printing station may dry and clog some of the mesh holes, or the squeegee pressure may be insufficient, which may lead to partial missing of the printed patterns on the circumferential side of the cosmetic bottles. If such problems are not detected in time on the production line, it will cause the problem of missing patterns on a large number of cosmetic bottles, not only increasing the time-consuming and labor costs of subsequent remedies, but also being difficult to clean thoroughly after pattern curing, resulting in batch scrapping of cosmetic bottles, thus increasing the production cost. Summary of the Invention

[0004] In order to improve the problem of batch scrapping of defective printed products during the printing process of cosmetic bottles and reduce the production cost, this application provides a linear printing device and a surface treatment process for cosmetic bottles.

[0005] In a first aspect, a linear printing device provided by this application adopts the following technical solutions:

[0006] A linear printing device includes a main body, a label mounting mechanism, a visual inspection and rotation adjustment mechanism, and a screen printing mechanism; a conveyor line is installed on the main body, and the conveyor line is used to convey bottles; the label mounting mechanism, the visual inspection and rotation adjustment mechanism, and the screen printing mechanism are sequentially arranged on the main body along the length direction of the conveyor line; the label mounting mechanism is used to temporarily install a set mark on the periphery of a bottle with a missing pattern; the label mounting mechanism includes a label storage area, a conveying part, a rotating imaging detection part, and a label mounting manipulator; the label storage area stores label objects; the conveying part is connected to the label storage area, and the conveying part is used to convey the label objects to the activity range of the label mounting manipulator; the rotating imaging detection part is used to rotate and detect a set pattern area, and after detecting the set pattern area, rotate the bottle to a set angle and then stop; the label mounting manipulator is used to install the label objects on the periphery of the bottle; the visual inspection and rotation adjustment mechanism is used to rotate the bottle and stop rotating the bottle after detecting the label objects on the periphery of the bottle; the screen printing mechanism is used to print a pattern on the periphery of the bottle.

[0007] By adopting the above technical solution, by using the label mounting mechanism, on the periphery of a bottle with a missing pattern printing, the missing pattern is identified and a label object is temporarily installed at the corresponding position on the periphery of the bottle to confirm the position for secondary printing coverage. In combination with the visual inspection and rotation adjustment mechanism, the relative position of the bottle on the conveyor line is rotated to make the label object in the correct relative position relative to the conveyor line, so as to reduce the risk of misalignment in secondary printing caused by the deflection of the bottle during the transportation of the bottle by the conveyor line. Then, the screen printing mechanism can be used to complete the secondary covering printing on the periphery of the bottle. After the secondary printing is completed, the label objects on the periphery of the bottle can be removed, and the bottles with missing pattern printing can be normally circulated, thereby completing the secondary precise covering printing operation on the periphery of the cosmetic bottle, improving the problem of batch rejection of printed cosmetic bottles during the printing process, and reducing the production cost.

[0008] Optionally, the label object includes a suction cup and a label head installed on the suction cup, and the label head is used for being grabbed by the label mounting manipulator and being identified and detected by the visual inspection and rotation adjustment mechanism.

[0009] By adopting the above technical solution, the label object is adsorbed on the periphery of the bottle body through the suction cup. After the label objects on the periphery of the bottle body are removed subsequently, the label objects can still be reused, reducing the use cost of the label objects.

[0010] Optionally, a plurality of flanges are arranged on the edge of the suction cup, and the plurality of flanges are arranged at intervals along the circumferential direction of the suction cup.

[0011] By adopting the above technical solution, when removing the suction cups on the circumferential side of the bottle body, the flange can be lifted to destroy the negative pressure environment of the suction cups at a certain position on the bottle body, so that the markers can be easily peeled off from the bottle body, reducing the time for removing the markers from the circumferential side of the bottle body, thus saving time costs and further controlling production costs.

[0012] Optionally, the marker storage area includes a material box and a plurality of trays; a plurality of slots are formed in the opposite inner walls of the material box, and the plurality of slots are arranged at intervals along the height direction of the material box. The trays are inserted into the slots, and the plurality of trays correspond to the plurality of slots one by one; a plurality of placement grooves are formed in the trays, and the placement grooves are used to accommodate the markers; the conveying part is used to sequentially convey the plurality of trays through the active range of the label applying manipulator.

[0013] By adopting the above technical solution, the combination of the material box and the trays realizes the transfer and placement of a plurality of markers. With the cooperation of the conveying part, not only can a plurality of markers be orderly conveyed to the range of the label applying manipulator, but also the recycled markers can be quickly placed at the designated position through the trays, achieving the effect of recycling and utilization of the markers.

[0014] Optionally, a plurality of bumps are arranged at the bottom of the placement groove of the tray, and the plurality of bumps are arranged at intervals. The bumps are for the suction cups to abut against.

[0015] By adopting the above technical solution, the flatness of the bottom of the placement groove is destroyed by the bumps, reducing the risk of the suction cups adsorbing on the tray, and improving the problem that it is difficult for the label applying manipulator to grasp the markers adsorbed on the tray.

[0016] Optionally, the conveyor line includes a first conveying part, a swing lifting part and a second conveying part. The label applying mechanism and the visual inspection and rotation position adjustment mechanism are both installed on one side of the main body where the first conveying part is located. The visual inspection and rotation position adjustment mechanism is located at one end of the first conveying part close to the swing lifting part; the swing lifting part is located below the screen printing mechanism. The swing lifting part is used to lift the bottles of the visual inspection and rotation position adjustment mechanism to the printing pattern position of the screen printing mechanism and convey the bottles with the pattern printed to the second conveying part.

[0017] By adopting the above technical solution, the conveyor line is split into three conveying structures, so that the conveying of the bottles at the screen printing mechanism can be independent of the first conveying part and the second conveying part. And the visual inspection and rotation position adjustment mechanism is located at one end of the first conveying part close to the swing lifting part. After the visual inspection and rotation position adjustment mechanism detects and identifies the markers on the bottle body and determines the rotation position of the bottle body, it can directly enter the secondary printing on the circumferential side of the bottle body through the swing lifting part, improving the problem of bottle rotation and printing position deviation caused by multiple conveyances.

[0018] Optionally, an electromagnet is provided on the swing lifting part; the electromagnet is used to attract the marker to force the bottle to rotate to a specified position on the swing lifting part.

[0019] By adopting the above technical solution, by turning on and off the electromagnet, the bottle on the swing lifting part rotates, further reducing the risk of offset of the printing position caused by the rotation of the bottle during the conveying process, thereby further improving the accuracy of the secondary covering printing.

[0020] Optionally, a sliding assisting piece is detachably connected to the swing lifting part, and the sliding assisting piece is used to reduce the friction between the bottle and the swing lifting part.

[0021] By adopting the above technical solution, on the one hand, the friction between the bottle and the swing lifting part is reduced, and the problem that the rotation amplitude of the bottle is small after the electromagnet is energized is improved. On the other hand, the detachable connection between the sliding assisting piece and the swing lifting part facilitates the subsequent replacement of the sliding assisting piece, so that the friction between the bottle and the swing lifting part is in a better state.

[0022] Optionally, the label attaching manipulator is used to install a plurality of the markers on the circumferential side of the bottle, and the plurality of markers are arranged at intervals along the axial direction of the bottle.

[0023] By adopting the above technical solution, a plurality of markers on the circumferential side of the bottle body can form a boundary line on the identification and detection interface, which is convenient for further accurately determining the rotation angle of the bottle. And using the principle that two points form a line, when at least two of the markers still remain on the circumferential side of the bottle body, the boundary line of the markers on the bottle body can still be recognized, and the number of markers is used to make up for the problem that the rotation angle of the bottle cannot be accurately defined due to the shedding of some markers during the conveying process of the bottle body.

[0024] In a second aspect, a surface treatment process for a cosmetic bottle provided by the present application adopts the following technical solution:

[0025] A surface treatment process for a cosmetic bottle, using the above-mentioned linear printing device, includes the following steps:

[0026] S1: Place the sample bottle with missing printed patterns at the screen printing mechanism, and repeatedly perform multiple printing and pattern clearing operations on the sample bottle to determine the secondary printing pattern covering position of the sample bottle at the screen printing mechanism, and mark and draw lines at the corresponding positions of the bottle body and the screen printing mechanism;

[0027] S2: Place the sample bottle at the position of the rotation imaging detection part, start the rotation imaging detection part, rotate and scan the bottle body; determine the obvious part of the printed pattern on the bottle body that is not missing, and mark it as the set pattern area;

[0028] S3: Identify and mark the marking lines on the body of the test sample bottle, determine the installation position of the marker on the circumferential side of the bottle body by the safety label manipulator, record the rotation angle of the bottle body after the rotary imaging detection unit detects the set pattern area at this time, and save it as the set angle;

[0029] S4: Place the sample bottle body with the marker on the visual inspection rotation position adjustment mechanism, start the visual inspection rotation position adjustment mechanism, rotate and scan the bottle body, identify and record the marker; and set whether the visual inspection rotation position adjustment mechanism stops immediately or delays stopping the rotation of the bottle body after detecting the marker.

[0030] S5: Place a batch of bottles with missing printed patterns on the conveyor line, so that the bottles pass through the marker installation of the safety label mechanism, the position calibration of the visual inspection rotation position adjustment mechanism, and the secondary covering printing of the screen printing mechanism in sequence.

[0031] S6: Peel off the marker on the circumferential side of the bottle body.

[0032] By adopting the above technical solutions, using sample bottles, determine the position of the secondary printing on the circumferential side of the bottle body by the screen printing mechanism and the installation position of the marker. Record and save the adjustment parameters of the safety label mechanism and the visual inspection rotation position adjustment mechanism for the sample bottles, namely the set pattern area, the set angle and the marker. Then, the secondary covering printing operation can be carried out on the circumferential side of a batch of cosmetic bottles with missing printed patterns. In addition, when it is detected that there is still a printing deviation on the circumferential side of the sample bottle body during the secondary covering printing operation, it is possible to choose to delay stopping the rotation of the bottle body, so as to utilize the remaining deflection angle of the bottle body to make up for the rotation angle caused by the rotation of the bottle body during the transfer of the visual inspection rotation position adjustment mechanism to the screen printing mechanism, resulting in the deviation of the printing position.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] Using the safety label mechanism, identify the missing pattern on the circumferential side of the bottle with missing pattern printing and temporarily install a marker at the corresponding position on the circumferential side of the bottle to confirm the position of the secondary printing coverage. Cooperate with the visual inspection rotation position adjustment mechanism to rotate the relative position of the bottle on the conveyor line so that the marker is in the correct relative position relative to the conveyor line, so as to reduce the risk of misalignment of the secondary printing caused by the deflection of the bottle during the transportation of the bottle by the conveyor line. After the secondary printing is completed, remove the marker on the circumferential side of the bottle, and then the bottles with missing pattern printing can flow normally, thus improving the problem of batch rejection of printed cosmetic bottles during the printing process and reducing the production cost;

[0035] By energizing and de-energizing the electromagnet and coordinating with the markers attracted by the electromagnet, the bottle located below the screen printing mechanism is rotated, further reducing the risk of printing position deviation caused by the rotation of the bottle during the conveying process, thereby further improving the accuracy of the secondary covering printing;

[0036] The arrangement of multiple markers on the circumferential side of the bottle body enables the multiple markers to form a boundary line on the recognition and detection interface, facilitating the further precise rotation angle of the bottle. And based on the principle that two points determine a line, when at least two of the markers still remain on the circumferential side of the bottle body, the boundary line of the markers on the bottle body can still be recognized, using the number of markers to make up for the problem that some markers fall off during the conveying process of the bottle body and the rotation angle of the bottle cannot be accurately defined. Description of the Drawings

[0037] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0038] Figure 2 is the structural schematic diagram for showing the first horizontal pressing assembly and the screen printing mechanism.

[0039] Figure 3 is Figure 2 the enlarged view of part A.

[0040] Figure 4 is the structural schematic diagram for showing the safety label mechanism.

[0041] Figure 5 is Figure 4 the enlarged view of part B.

[0042] Figure 6 is the structural schematic diagram showing the material box and the markers.

[0043] Figure 7 is the schematic diagram of the positions of the top outlet and the convex block on the material box.

[0044] Figure 8 is the structural schematic diagram for showing the visual detection rotation position adjustment mechanism.

[0045] Figure 9 is the structural schematic diagram for showing the safety label manipulator.

[0046] Description of the Reference Numerals:

[0047] Main body; 11, Flap; 12, Detection Sensor;

[0048] Safety Standard Institution; 21. Mark Storage Area; 211. Cartridge; 2111. Cartridge Opening; 2112. Top Outlet; 2113. Bump; 2114. Fixed Slot; 2115. Slot; 212. Tray; 2121. Placement Slot; 2122. Bump Point; 22. Conveyor Section; 221. First Screw Jack Assembly; 222. Second Screw Jack Assembly; 223. Ejection Cylinder; 224. Material Track; 225. Belt Conveyor Assembly; 23. Rotary Imaging Detection Section; 231. Servo Motor; 232. Disc; 233. Vision Detection Assembly; 24. Safety Standard Manipulator; 241. First Motor; 242. Rotating Rod; 243. Second Motor; 244. Telescopic Cylinder; 245. Air Block; 246. Negative Pressure Suction Cup

[0049] Vision Detection Rotary Position Adjustment Mechanism

[0050] Screen Printing Mechanism; 41. Horizontal Reciprocating Assembly; 42. Screen; 43. Contact Cylinder; 44. Doctor Blade

[0051] Conveyor Belt; 51. Power Output Section; 52. First Conveyor Section; 521. Front Tooth Plate; 522. Rear Tooth Plate; 523. First Horizontal Pressing Assembly; 5231. Mounting Plate; 52311. Activity Hole; 5232. Pressing Rod; 5233. Return Spring; 5234. Rotating Plate; 524. Tooth Groove; 53. Rocking Lifting Section; 531. Connecting Rod; 532. First Placement Tank; 5321. Groove; 533. Second Placement Tank; 54. Second Conveyor Section

[0052] Second Horizontal Pressing Assembly; 61. Mounting Base; 62. Activity Cylinder; 63. Compression Spring; 64. End Cap

[0053] Marker; 71. Suction Cup; 72. Marking Head; 73. Flange

[0054] Electromagnet

[0055] 9. Slide Assist Detailed Implementation Manner

[0056] The following is a further detailed description of this application in conjunction with the attached Figures 1-9 to further elaborate on this application

[0057] The embodiment of this application discloses a linear printing device, aiming to precisely perform secondary covering printing operations on cosmetic bottles with missing printed patterns, improve the problem of batch rejection of printed products during the printing process of cosmetic bottles, and reduce production costs

[0058] Refer to Figure 1, A linear printing device includes a main body 1, a label - installing mechanism 2, a visual - inspection and rotation - position - adjustment mechanism 3, and a screen - printing mechanism 4. A conveyor line 5 is installed on the main body 1, and the conveyor line 5 is used to convey bottles. The label - installing mechanism 2, the visual - inspection and rotation - position - adjustment mechanism 3, and the screen - printing mechanism 4 are sequentially arranged on the main body 1 along the length direction of the conveyor line 5. The label - installing mechanism 2 is used to temporarily install a set mark on the circumferential side of a bottle with a missing pattern. The visual - inspection and rotation - position - adjustment mechanism 3 is used to rotate the bottle and stop rotating the bottle after detecting a marker 7 on the circumferential side of the bottle. The screen - printing mechanism 4 is used to print a pattern on the circumferential side of the bottle.

[0059] Referring to Figure 1 , Specifically, the conveyor line 5 includes a power - output part 51, a first conveying part 52, a swing - lifting part 53, and a second conveying part 54. The first conveying part 52, the swing - lifting part 53, and the second conveying part 54 are all connected to the power - output part 51. Starting the power - output part 51, the power - output part 51 drives the first conveying part 52, the swing - lifting part 53, and the second conveying part 54 to move in a semicircular trajectory. It can be understood that the two end - point positions of the semicircular movement trajectory are the horizontal moving distances of the bottle.

[0060] Referring to Figure 1 , In the embodiment of the present application, the power - output part 51 is configured as a crank - rocker mechanism installed on the main body 1. Since the crank - rocker mechanism is a commonly used component in the field of mechanical manufacturing, the present application will not elaborate on it here. The structures of the first conveying part 52 and the second conveying part 54 are the same. The present application takes the first conveying part 52 as an example, and the second conveying part 54 can be obtained in the same way. The swing - lifting part 53 is located directly below the screen - printing mechanism 4.

[0061] Referring to Figure 1 and Figure 2 , The first conveying part 52 includes a front tooth plate 521, a rear tooth plate 522, and a first horizontal pressing assembly 523. The front tooth plate 521 and the rear tooth plate 522 are both fixed to the power - output part 51, and the first horizontal pressing assembly 523 is fixed to the main body 1. There is a gap between the front tooth plate 521 and the rear tooth plate 522. Multiple tooth grooves 524 are opened on both the front tooth plate 521 and the rear tooth plate 522. The difference is that the tooth grooves 524 of the front tooth plate 521 are shallow, while the tooth grooves 524 of the rear tooth plate 522 are deep. The multiple tooth grooves 524 are arranged at intervals along the length direction of the conveyor line 5. The tooth grooves 524 of the front tooth plate 521 are used for the mouth of the cosmetic bottle to abut against, and the tooth grooves 524 of the rear tooth plate 522 are used for the bottom of the cosmetic bottle to abut against. The label - installing mechanism 2 and the visual - inspection and rotation - position - adjustment mechanism 3 are both installed on one side of the main body 1 where the first conveying part 52 is located, and the visual - inspection and rotation - position - adjustment mechanism 3 is located at one end of the first conveying part 52 close to the swing - lifting part 53.

[0062] Referring to Figure 2, the first horizontal pressing component 523 includes a mounting plate 5231 slidably connected to the main body 1, a plurality of pressing rods 5232 slidably connected to the mounting plate, and a return spring 5233 sleeved on the circumferential side of the pressing rods 5232. The mounting plate 5231 is connected with a cylinder, and the cylinder drives the mounting plate 5231 to approach or move away from the front tooth plate 521. A plurality of moving holes 52311 are formed through the plate surface of the mounting plate 5231, and the plurality of moving holes 52311 correspond to the plurality of pressing rods 5232. The moving holes 52311 are provided for the pressing rods 5232 to slidably pass through. The plurality of pressing rods 5232 correspond to the plurality of tooth grooves 524. A rotating piece 5234 is rotatably connected to the end of the pressing rod 5232, and the rotating piece 5234 is for the mouth of the cosmetic bottle to abut against. Both ends of the compression spring 63 respectively abut against the mounting plate 5231 and the rotating piece 5234. A retaining piece 11 is fixed on one side of the main body 1 where the rear tooth plate 522 is located, and the retaining piece 11 is for the bottom of the cosmetic bottle to abut against.

[0063] Referring to Figure 2 and Figure 3 , the swinging lifting part 53 includes a connecting rod 531 rotatably connected to the power output part 51, a first placing groove body 532 fixedly connected to the connecting rod 531, and a second placing groove body 533 fixedly connected to the connecting rod 531. The connecting structure between the connecting rod 531 and the power output part 51 is a crank-rocker mechanism. A second horizontal pressing component 6 for fixing the cosmetic bottle conveyed by the swinging lifting part 53 to the screen printing mechanism 4 is fixed on the main body 1. The first placing groove body 532 corresponds to the first conveying part 52, and the second placing groove body 533 corresponds to the second conveying part 54. Grooves 5321 for placing the mouth and the bottom of the cosmetic bottle are respectively formed on the mutually remote side walls of the first placing groove body 532. Similarly, grooves 5321 are also formed at the same positions on the second placing groove body 533. When the power output part 51 drives the first conveying part 52 and the second conveying part 54 to move along a semicircular track, through the connecting rod 531, the first placing groove body 532 and the second placing groove body 533 move along an elliptical track.

[0064] Referring to Figure 2 and Figure 3 , it can be understood that when the power output part 51 drives the first conveying part 52 and the second conveying part 54 to move along a semicircular track, the first placing groove body 532 catches the cosmetic bottle transferred by the first conveying part 52 and lifts it to the printing position of the screen printing mechanism 4, and the second horizontal pressing component 6 presses the cosmetic bottle located at the printing position. The second placing groove body 533 catches the cosmetic bottle located at the printing position, the second horizontal pressing component 6 releases the cosmetic bottle, and the second placing groove body 533 places the cosmetic bottle on the second conveying part 54. That is, when the power output part 51 drives the first conveying part 52 and the second conveying part 54 to move along a semicircular track, the crank-rocker mechanism between the connecting rod 531 and the power output part 51 drives the first placing groove body 532 and the second placing groove body 533 to move along an elliptical track.

[0065] Referring to Figure 3 , the second horizontal pressing assembly 6 includes a mounting base 61 fixed to the main body 1, a movable cylinder 62 fixed to the mounting base 61, a compression spring 63 sleeved on the output shaft of the movable cylinder 62, and an end cap 64 rotatably connected to the end of the output shaft of the movable cylinder 62. The two ends of the compression spring 63 respectively abut against the movable cylinder 62 and the end cap 64. The end cap 64 is used for the mouth of the cosmetic bottle to abut against. A contact piece (not shown in the figure) is rotatably connected to the main body 1, and the contact piece is used for the bottom of the cosmetic bottle located at the position of the screen printing mechanism 4 to abut against.

[0066] Referring to Figure 1 , Figure 2 and Figure 3 , the principle of the conveyor line 5 is as follows: When the conveyor line 5 is started, the power output part 51 drives the first conveying part 52 and the second conveying part 54 to move in a semicircular trajectory, driving the swinging lifting part 53 to move in an elliptical trajectory. When the bottle is at the two end positions of the semicircular movement trajectory, the cylinders connected to the mounting plate 5231 and the movable cylinder 62 are ventilated, and the pressing rod 5232 approaches and presses the cosmetic bottle against the baffle 11. The return spring 5233 and the compression spring 63 are compressed, and the movable cylinder 62 presses the cosmetic bottle against the contact piece. The screen printing mechanism 4 is started to print the pattern on the periphery of the cosmetic bottle. Then the first conveying part 52 and the second conveying part 54 move along the semicircular arc, and the cylinders connected to the mounting plate 5231 and the movable cylinder 62 are cut off from the air supply. The cosmetic bottle falls into the next tooth groove 524 of the front tooth plate 521 and the rear tooth plate 522, and the cosmetic bottle realizes horizontal movement. The swinging lifting part 53 moves along the elliptical arc. The first placement groove body 532 catches the cosmetic bottle transferred by the first conveying part 52 and lifts it to the printing position of the screen printing mechanism 4. The second placement groove body 533 catches the cosmetic bottle at the printing position and places the cosmetic bottle on the second conveying part 54, and the cosmetic bottle realizes the transfer before and after printing.

[0067] Referring to Figure 4 and Figure 5 , the safety label mechanism 2 includes a label storage area 21, a conveying part 22, a rotating imaging detection part 23 and a safety label manipulator 24. The label storage area 21 stores the labels 7. The conveying part 22 is connected to the label storage area 21, and the conveying part 22 is used to convey the labels 7 to the activity range of the safety label manipulator 24. The rotating imaging detection part 23 is used to rotate and detect the set pattern area, and after detecting the set pattern area, the bottle is rotated to the set angle and then stopped. The safety label manipulator 24 is used to install a plurality of labels 7 on the periphery of the bottle, and the plurality of labels 7 are arranged at intervals along the axial direction of the bottle.

[0068] Referring to Figure 4 , Figure 6 and Figure 7, specifically, the marker storage area 21 includes a magazine 211 and a plurality of trays 212, that is, one magazine 211 holds a plurality of trays 212, and the marker storage area 21 can hold a plurality of magazines 211. One end of the magazine 211 is provided with a box opening 2111 for the tray 212 to enter, and the other end is provided with a top outlet 2112 which extends along the height direction of the magazine 211. The top outlet 2112 restricts the passage of the tray 212 and allows the structure of the conveying part 22 to pass through. The outer top wall and the outer bottom wall of the magazine 211 are respectively provided with a convex block 2113 and a fixing groove 2114, and the convex block 2113 is inserted into the fixing groove 2114 to reduce the risk of the plurality of magazines 211 tipping over when stacked. A plurality of slots 2115 are formed on the opposite inner walls of the magazine 211, and the plurality of slots 2115 are arranged at intervals along the height direction of the magazine 211. The slots 2115 are for the trays 212 to be inserted, and the plurality of trays 212 correspond to the plurality of slots 2115 one by one. A plurality of placement grooves 2121 are formed on the tray 212, and the placement grooves 2121 are used to accommodate the markers 7. The conveying part 22 is used to sequentially convey the plurality of trays 212 through the moving range of the labeling manipulator 24.

[0069] Refer to Figure 5 and Figure 6 , the marker 7 includes a suction cup 71 and a marker head 72 fixed on the suction cup 71. A plurality of flanges 73 are integrally formed at the edge of the suction cup 71, and the plurality of flanges 73 are arranged at intervals along the circumferential direction of the suction cup 71. The purpose of designing the flanges 73 is that when removing the suction cup 71 on the circumferential side of the bottle body, the flanges 73 can be lifted to break the negative pressure environment of the suction cup 71 at a certain place on the bottle body, so that the marker 7 can be easily peeled off from the bottle body, reducing the time for removing the marker 7 from the circumferential side of the bottle body, thereby saving time costs. A plurality of bumps 2122 are arranged at the bottom of the placement groove 2121 of the tray 212, and the plurality of bumps 2122 are arranged at intervals. The bumps 2122 are for the suction cup 71 to abut against, so as to use the bumps 2122 to break the flatness of the bottom of the placement groove 2121 and reduce the risk of the suction cup 71 being adsorbed on the tray 212, improving the problem that it is difficult for the labeling manipulator 24 to grasp the marker 7 adsorbed on the tray 212.

[0070] Refer to Figure 4 and Figure 6 , the marker head 72 is used for the labeling manipulator 24 to grasp and the vision detection and rotation position adjustment mechanism 3 to identify and detect. A pattern mark for vision detection recognition is engraved on the surface of the marker head 72 away from the suction cup 71. The structure of the marker head 72 is cylindrical and is made of a material that can be adsorbed by a magnet.

[0071] Refer to Figure 4 and Figure 5, the conveying unit 22 includes a first lead screw lifting assembly 221, a second lead screw lifting assembly 222, an ejecting cylinder 223, a material track 224, and a belt conveying assembly 225. The first lead screw lifting assembly 221 and the second lead screw lifting assembly 222 are both fixed to the main body 1, and the first lead screw lifting assembly 221 and the second lead screw lifting assembly 222 are respectively located on both sides of the first conveying unit 52. The first lead screw lifting assembly 221 and the second lead screw lifting assembly 222 are both used to drive the cartridge 211 to lift in the vertical direction. The first lead screw lifting assembly 221 and the second lead screw lifting assembly 222 have the same structure and are both lead screw lifting mechanisms. Since the lead screw lifting mechanism is a commonly used component in the field of mechanical manufacturing, it will not be elaborated in this application. The first lead screw lifting assembly 221 is used to store a plurality of stacked cartridges 211 with markers 7, and the second lead screw lifting assembly 222 is used to store a plurality of stacked empty cartridges 211 to recycle the tray 212.

[0072] Referring to Figure 4 and Figure 7 , the ejecting cylinder 223 is fixed to the main body 1, and the output shaft of the ejecting cylinder 223 can pass through the ejection port 2112 of the cartridge 211. The material track 224 is erected between the first lead screw lifting assembly 221 and the second lead screw lifting assembly 222 and is located above the first conveying unit 52. When the ejecting cylinder 223 is paired with the first lead screw lifting assembly 221, the plurality of trays 212 in the cartridge 211 can be orderly pushed onto the material track 224, and the plurality of trays 212 abut against each other on the material track 224 and approach the second lead screw lifting assembly 222 orderly. A detection sensor 12 is fixed above the main body 1 on the material track 224, and the detection sensor 12 is close to the second lead screw lifting assembly 222.

[0073] Referring to Figure 4 , one end of the material track 224 close to the second lead screw lifting assembly 222 is provided with an installation groove for installing the belt conveying assembly 225. The detection sensor 12 is electrically connected to the second lead screw lifting assembly 222 and the belt conveying assembly 225. When the detection sensor 12 recognizes that the tray 212 is located at one end of the material track 224 close to the second lead screw lifting assembly 222, the belt conveying assembly 225 is started to push the tray 212 into the cartridge 211 on the second lead screw lifting assembly 222, and then the belt conveying assembly 225 is closed, and the second lead screw lifting assembly 222 is started to drive the cartridge 211 to rise to a set height so that the next empty tray 212 can enter the cartridge 211.

[0074] Referring to Figure 8, the rotation imaging detection unit 23 includes a servo motor 231 mounted on the main body 1, a disc 232 fixed to the output shaft of the servo motor 231, and a vision detection component 233 mounted on the main body 1. The servo motor 231 is located at the middle position of the first conveying unit 52, and the servo motor 231 is electrically connected to the vision detection component 233. The disc 232 is for the bottom of the cosmetic bottle to abut against. It can be understood that the disc 232 replaces the baffle 11 behind the rear toothed plate 522. When the cosmetic bottles at other positions of the first conveying unit 52 press against the baffle 11, the cosmetic bottle of the rotation imaging detection unit 23 presses against the disc 232. The vision detection component 233 is used to identify and detect the printed pattern on the circumferential side of the cosmetic bottle body. In view of the wide application and known technical characteristics of the vision detection component 233 in the field of automated detection, the specific structure and working principle of the vision detection component 233 will not be elaborated in detail in this application.

[0075] Refer to Figure 9 , the label applying manipulator 24 includes a first motor 241, a rotating rod 242, a second motor 243, a telescopic cylinder 244 and an air block 245. The first motor 241 is fixed to the main body 1. One end of the rotating rod 242 is fixed to the output shaft of the first motor 241, and the other end is rotatably connected to the main body 1. The rotating rod 242 is located above the material track 224. The second motor 243 is fixed to the rotating rod 242, and the telescopic cylinder 244 is fixed to the output shaft of the second motor 243. One surface of the air block 245 is fixed to the output shaft of the telescopic cylinder 244, and the other surface is fixed with a plurality of negative pressure suction cups 246. The negative pressure suction cups 246 are externally connected to a negative pressure device.

[0076] Refer to Figure 5 and Figure 9 , the working principle of the label applying manipulator 24: After a plurality of negative pressure suction cups 246 adsorb a plurality of markers 7 on the tray 212, the output shaft of the telescopic cylinder 244 contracts, and the second motor 243 drives the air block 245 to rotate, so that the plurality of markers 7 are arranged in an extending manner along the axial direction of the cosmetic bottle. Then the first motor 241 is started to drive the telescopic cylinder 244 to deflect until the axis of the telescopic cylinder 244 is perpendicular to the axis of the cosmetic bottle, and the first motor 241 stops. The output shaft of the telescopic cylinder 244 extends, and the marker 7 is adsorbed to the circumferential side of the cosmetic bottle. The vacuum of the negative pressure suction cup 246 is disconnected, and the marker 7 can be detached from the label applying manipulator 24.

[0077] Refer to Figure 2 and Figure 8 , the vision detection rotation position adjustment mechanism 3 is similar in structure to the rotation imaging detection unit 23. The difference is that the camera of the vision detection component 233 in the vision detection rotation position adjustment mechanism 3 is inclined so that the bottles at the edge of the first conveying unit 52 can be scanned and detected, and at the same time, it does not interfere with the movement trajectories of the screen printing mechanism 4 and the swing lifting unit 53.

[0078] Referring to Figure 2 , the screen printing mechanism 4 includes a horizontal reciprocating assembly 41, a screen 42, an abutting cylinder 43, and a squeegee 44. The horizontal reciprocating assembly 41 is installed on the main body 1 and is located above the swinging lifting part 53. In view of the generality and mature technology of the horizontal reciprocating assembly 41 in realizing automatic displacement control, the detailed description of the specific structure and working principle of the horizontal reciprocating assembly 41 is omitted in this application. The screen 42 is installed on the horizontal reciprocating assembly 41, and the abutting cylinder 43 is installed on the main body 1 and is located above the screen 42. The squeegee 44 is installed on the output shaft of the abutting cylinder 43, and the abutting cylinder 43 is used to drive the squeegee 44 to approach or move away from the screen 42.

[0079] Referring to Figure 2 , the working principle of screen printing: The swinging lifting part 53 lifts the cosmetic bottle at the visual inspection and rotation adjustment mechanism 3 and makes the cosmetic bottle abut against the screen 42. The horizontal reciprocating assembly 41 and the abutting cylinder 43 are started, and the abutting cylinder 43 forces the squeegee 44 to abut against the circumferential side of the cosmetic bottle. The horizontal movement of the screen 42 drives the cosmetic bottle to rotate, and the ink on the screen 42 is printed through the set pattern on the screen 42 onto the circumferential side of the bottle body.

[0080] Referring to Figure 3 and Figure 6 , it should be noted that an electromagnet 8 is fixed to the inner wall of the first placement groove body 532. The electromagnet 8 is used to attract the marker 7 to force the bottle to rotate on the first placement groove body 532 and be fixed to the designated position. The purpose of designing the electromagnet 8 is to use the energization and de-energization of the electromagnet 8, combined with the marker 7 attracted by the electromagnet 8, to rotate the bottle located below the screen printing mechanism 4, reduce the risk of printing position deviation caused by the rotation of the bottle during the transmission process, and improve the accuracy of secondary covering printing. A sliding assist piece 9 is detachably connected to the first placement groove body 532 at the groove 5321. The detachable connection method can be plug-in connection, bolt connection, or magnetic attraction connection, etc. The sliding assist piece 9 is used to reduce the friction between the bottle and the first placement groove body 532. The sliding assist piece 9 can be made of polytetrafluoroethylene (PTFE), polyethylene (PE), or polypropylene (PP), etc.

[0081] The implementation principle of a linear printing device is as follows: By using the safety marking mechanism 2, on the circumferential side of the bottle with missing pattern printing, the missing pattern is identified and markers 7 are temporarily installed at the corresponding positions on the circumferential side of the bottle to confirm the secondary printing coverage position. In combination with the visual inspection and rotation position adjustment mechanism 3, the relative position of the bottle on the conveyor line 5 is rotated to make the marker 7 in the correct relative position with respect to the conveyor line 5, so as to reduce the risk of misalignment in secondary printing caused by the deflection of the bottle during the transportation of the conveyor line 5. In combination with the on-off of the electromagnet 8, the risk of the printing position shifting caused by the rotation of the swing lifting part 53 during the transmission process and when the bottle contacts the screen 42 is further reduced, and the accuracy of secondary coverage printing is further improved. Then, the secondary coverage printing on the circumferential side of the bottle can be completed by using the screen printing mechanism 4. After the secondary printing is completed, the markers 7 on the circumferential side of the bottle can be removed, and the bottles with missing pattern printing can be normally transferred, thereby completing the secondary precise coverage printing operation on the circumferential side of the cosmetic bottle, improving the problem of batch rejection of printed cosmetic products during the printing process of the cosmetic bottle, and reducing the production cost.

[0082] Of course, in addition to being used in the secondary coverage printing of missing patterns, this application can also be used when upgrading part of the printed pattern on the original printed pattern. Only by replacing the screen 42 of the pattern at the changed position can the positioning coverage and printing pattern be changed, so as to achieve the effect that when the printed pattern on the circumferential side of the cosmetic bottle is updated, the cosmetic bottles with the old version pattern can be re-updated, and the inventory backlog cost of the old version cosmetic bottles is reduced.

[0083] The embodiment of this application also discloses a surface treatment process for cosmetic bottles, using the above-mentioned linear printing device.

[0084] A surface treatment process for cosmetic bottles includes the following steps:

[0085] S1: Place the sample bottle with missing printed pattern at the screen printing mechanism 4, and repeatedly perform multiple printing and pattern removal operations on the sample bottle to determine the secondary printing pattern coverage position of the sample bottle at the screen printing mechanism 4, and mark and draw lines at the corresponding positions on the bottle body and the screen 42.

[0086] S2: Place the sample bottle at the position of the rotation imaging detection unit 23, start the rotation imaging detection unit 23, and rotate and scan the bottle body. Determine the obvious parts of the bottle body where the printed pattern is not missing, and mark them as the set pattern area, such as the obvious corners of the printed pattern, or the obvious characters in the printed text, or the pattern plus text, or the identification points printed in advance for secondary printing detection in the first printing, etc.

[0087] S3: Rotate the sample bottle, identify and mark the marking lines on the bottle body of the test sample, start the safety label manipulator 24, so that multiple markers 7 are adsorbed to the circumferential side of the bottle body, observe the overlapping situation between the connection lines of the multiple markers 7 and the marking lines on the circumferential side of the bottle body, until the connection lines of the multiple markers 7 overlap with the marking lines on the circumferential side of the bottle body, then the installation position of the marker 7 on the circumferential side of the bottle body by the safety label manipulator 24 can be determined, record the rotation angle of the bottle body after the rotation imaging detection unit 23 detects the set pattern area at this time, and save it as the set angle.

[0088] S4: Place the sample bottle body with the marker 7 on the visual inspection rotation position adjustment mechanism 3, start the visual inspection rotation position adjustment mechanism 3, rotate and scan the bottle body, identify and record the marker 7. Set whether the visual inspection rotation position adjustment mechanism 3 immediately stops or delays stopping the rotation of the bottle body after detecting the marker 7.

[0089] The purpose of introducing the delay in stopping the rotation of the bottle body is that when it is found that there is still a printing offset phenomenon on the circumferential side of the sample bottle body for the secondary covering printing operation, the rotation of the bottle body can be selected to be delayed to stop, so as to utilize the remaining deflection angle of the bottle body to make up for the rotation angle caused by the rotation of the bottle body during the transfer of the visual inspection rotation position adjustment mechanism 3 to the screen printing mechanism 4, resulting in the printing position offset.

[0090] S5: Place a batch of bottles with missing printed patterns on the conveyor line 5, so that the bottles pass through the installation of the marker 7 by the safety label mechanism 2, the position calibration of the visual inspection rotation position adjustment mechanism 3, and the secondary covering printing of the screen printing mechanism 4 in sequence.

[0091] During the secondary covering printing process, randomly inspect the bottles to confirm that there is no printing offset phenomenon in the secondary covering printing. If the random inspection is unqualified, repeat S1 to S4 until the secondary covering printing of the sample is qualified, and then the bottles after the secondary covering printing can be transferred to the next process.

[0092] S6: Peel off the marker 7 on the circumferential side of the bottle body and recycle it. The marker 7 on the circumferential side of the bottle body can be peeled off manually or can be peeled off and recycled by a mechanical structure rotation.

[0093] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A linear printing device, characterized in that: The invention comprises a main body (1), a label installation mechanism (2), a visual detection rotation adjustment mechanism (3) and a screen printing mechanism (4); a conveyor line (5) is installed on the main body (1), and the conveyor line (5) is used to convey bottles; the label installation mechanism (2), the visual detection rotation adjustment mechanism (3) and the screen printing mechanism (4) are sequentially arranged on the main body (1) along the length direction of the conveyor line (5); The conveying line (5) comprises a first conveying part (52), a swing lifting part (53) and a second conveying part (54); the visual detection rotation adjustment mechanism (3) is located at one end of the first conveying part (52) close to the swing lifting part (53); the swing lifting part (53) is located below the screen printing mechanism (4); The label installation mechanism (2) is used to temporarily install a set mark on the side of the bottle with missing patterns; the label installation mechanism (2) comprises a mark storage area (21), a conveying part (22), a rotation imaging detection part (23) and a label installation manipulator (24); the label storage area (21) stores a marker (7); the conveying part (22) is connected to the label storage area (21), and the conveying part (22) is used to transport the marker (7) to the range of movement of the label installation manipulator (24); the rotation imaging detection part (23) is used to rotationally detect a set pattern area, and after detecting the set pattern area, rotate the bottle to a set angle and then stop; The label installation robot (24) is used to install the marker (7) on the peripheral side of the bottle; The visual detection rotation adjustment mechanism (3) is used to rotate the bottle and stop rotating the bottle after detecting the marker (7) on the side of the bottle; the screen printing mechanism (4) is used to print a pattern on the side of the bottle.

2. A linear printing device according to claim 1, characterized in that: The marker (7) comprises a suction cup (71) and a marking head (72) mounted on the suction cup (71); the marking head (72) is used for being grasped by the safety mark manipulator (24) and for being identified and detected by the visual detection rotation adjustment mechanism (3).

3. A linear printing device according to claim 2, characterized in that: A plurality of flanges (73) are arranged on the edge of the suction cup (71), and the plurality of flanges (73) are arranged at intervals along the circumference of the suction cup (71).

4. A linear printing device according to claim 2, characterized in that: The marking storage area (21) comprises a material box (211) and a plurality of material trays (212); the relative inner walls of the material box (211) are provided with a plurality of slots (2115), the plurality of slots (2115) are arranged at intervals along the height direction of the material box (211), the slots (2115) are for the material trays (212) to be inserted, and the plurality of material trays (212) correspond one-to-one to the plurality of slots (2115); the material tray (212) is provided with a plurality of placement grooves (2121), the placement grooves (2121) are used to accommodate the marking objects (7); the conveying part (22) is used to convey the plurality of material trays (212) in sequence through the range of movement of the marking robot (24).

5. A linear printing device according to claim 4, characterized in that: The material tray (212) is provided with a plurality of protrusions (2122) at the bottom of the placement groove (2121), and the plurality of protrusions (2122) are arranged at intervals, and the protrusions (2122) are provided for the suction cup (71) to abut against.

6. A linear printing device according to claim 1, characterized in that: The swing lifting part (53) is provided with an electromagnet (8); the electromagnet (8) is used to attract the marker (7) to force the bottle to rotate on the swing lifting part (53) to a designated position.

7. A linear printing device according to claim 6, characterized in that: The swing lifting part (53) is detachably connected with a sliding sheet (9), and the sliding sheet (9) is used to reduce the friction between the bottle and the swing lifting part (53).

8. A linear printing device according to claim 1, characterized in that: The label installation robot (24) is used to install a plurality of the markers (7) on the peripheral side of the bottle, and the plurality of the markers (7) are arranged at intervals along the axial direction of the bottle.

9. A cosmetic bottle surface treatment process, using a linear printing device according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: placing a sample bottle with a missing printed pattern on the screen printing mechanism (4), repeatedly performing printing and pattern removal operations on the sample bottle to determine the position of the sample bottle covered by the secondary printed pattern on the screen printing mechanism (4), and marking and drawing lines at corresponding positions on the bottle body and the screen printing mechanism (4); S2: placing the sample bottle at the position of the rotating imaging detection unit (23), starting the rotating imaging detection unit (23), rotating and scanning the bottle body; determining the obvious part of the bottle body where the printed pattern is not missing, and marking it as the set pattern area; S3: Identify and mark the marking line on the test sample bottle, determine the installation position of the marking object (7) on the side of the bottle by the label installation robot (24), record the rotation angle of the bottle after the rotation imaging detection unit (23) detects the set pattern area, and save it as the set angle; S4: placing the sample bottle with the marker (7) on the visual detection rotation adjustment mechanism (3), starting the visual detection rotation adjustment mechanism (3), rotating and scanning the bottle, identifying and recording the marker (7); and setting the visual detection rotation adjustment mechanism (3) to delay stopping the rotation of the bottle after detecting the marker (7); S5: placing a batch of bottles with missing printed patterns on the conveyor line (5), so that the bottles are sequentially subjected to the installation of the marker (7) by the label installation mechanism (2), the position calibration by the visual detection rotation adjustment mechanism (3), and the secondary overprinting by the screen printing mechanism (4); S6: Peel off the marking material (7) on the side of the bottle body.

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