Continuous silk screening process for packaging plastic bottles

Abstract

The application discloses a continuous silk-screen printing processing method for packaging plastic bottles and belongs to the technical field of plastic bottle processing, and comprises the following steps: step one, pretreatment; step two, plate making; step three, printing preparation; step four, printing; step five, moving and drying, the plastic bottles printed with graphics and texts are placed on a moving and blowing device, a carrying mechanism in the moving and blowing device carries the plastic bottles, and a blowing mechanism in the moving and blowing device dries the printed graphics and texts on the plastic bottles; and step six, quality inspection.The continuous silk-screen printing processing method for packaging plastic bottles can greatly improve the drying efficiency of the printed graphics and texts on the plastic bottles and improve the production efficiency by adding the drying step.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of plastic bottle processing, and particularly relates to a continuous screen printing processing method for packaging plastic bottles. BACKGROUND

[0002] With the development of modern industry and the diversification of consumer demand, packaging plastic bottles have become an indispensable part of daily life. These plastic bottles are widely used in food, beverage, cosmetics and other fields, and the appearance design and printing quality of plastic bottles greatly affect the market acceptance and brand value of products. Screen printing, as an important printing technology, is widely used in the decoration and identification printing of plastic bottles due to its unique printing effect and wide applicability.

[0003] However, the existing continuous screen printing processing method for packaging plastic bottles still has some deficiencies in actual application. For example, after printing graphics on the packaging plastic bottle, the plastic bottle is placed aside to wait for the graphics to dry naturally, which not only consumes a lot of time and reduces production efficiency. SUMMARY

[0004] The purpose of the present application is to provide a continuous screen printing processing method for packaging plastic bottles, which solves the technical problem of the prior art that the graphics on the packaging plastic bottle need to be dried naturally after printing, reducing production efficiency.

[0005] In order to achieve the above purpose, the application adopts the following technical scheme:

[0006] The continuous screen printing processing method for packaging plastic bottles comprises the following steps: step one, pretreatment, cleaning the plastic bottle to remove grease, dust and other impurities on the surface of the plastic bottle; step two, plate making, making a screen printing plate according to the required pattern and text; step three, printing preparation, preparing screen printing ink and adjusting the printing equipment; step four, printing, fixing the plastic bottle on the printing table, evenly scraping the ink through the screen printing plate by the scraper, and making the ink penetrate onto the plastic bottle; step five, moving and drying, placing the plastic bottle with printed graphics on the moving and blowing device, moving the plastic bottle by the moving mechanism in the moving and blowing device, and quickly drying the printed graphics on the plastic bottle by the blowing mechanism in the moving and blowing device; step six, quality inspection, comprehensively checking the printing quality of the dried plastic bottle.

[0007] Preferably, the conveying and blowing device comprises: a frame; a plurality of bottle placing grooves arranged on the frame for placing plastic bottles; a plurality of bottle rotating grooves equidistantly arranged on the frame; a discharging plate arranged on the side of the frame away from the bottle placing grooves; a plurality of bottle rotating mechanisms respectively installed in the plurality of bottle rotating grooves for driving the plastic bottles in the bottle rotating grooves to rotate; a rotating wheel mechanism; a conveying mechanism for conveying the plastic bottles in the bottle placing grooves to the bottle rotating grooves and conveying the plastic bottles in the bottle rotating grooves to the discharging plate; and a blowing mechanism for conveying hot air to the plurality of bottle rotating grooves; wherein, when the conveying mechanism operates, the rotating wheel mechanism drives the plurality of bottle rotating mechanisms to operate, and the plurality of bottle rotating mechanisms drive the plurality of plastic bottles in the bottle rotating grooves to rotate.

[0008] Preferably, the bottle rotating mechanism comprises: a plurality of rollers, each of which is located in the bottle rotating groove; a plurality of shafts, each of which is rotatably installed in the bottle rotating groove, and each of the plurality of rollers is fixedly sleeved on a corresponding shaft, and one end of each of the plurality of shafts extends out of the bottle rotating groove; a plurality of first pulleys, each of which is fixedly sleeved on a corresponding shaft; a mounting rod rotatably installed on the frame; a plurality of second pulleys, each of which is fixedly sleeved on the mounting rod and corresponds to a first pulley; a plurality of first transmission belts, each of which is used to connect a first pulley and a second pulley; and a gear fixedly connected to one end of the mounting rod away from the frame; wherein, when the gear and the mounting rod rotate, the plurality of first transmission belts drive the plurality of shafts to rotate simultaneously, and the plurality of rollers rotate simultaneously and in the same direction.

[0009] Preferably, the conveying and blowing device further comprises: a through groove arranged through the frame; and a sliding groove arranged on the inner bottom surface of the frame.

[0010] Preferably, the rotating wheel mechanism comprises: a moving frame arranged in a "U" shape and slidably connected to the through groove; a plurality of racks each arranged on the top surface of the moving frame and engaged with a corresponding gear; a sliding block installed on the bottom surface of the moving frame and slidably connected to the sliding groove; and two pairs of baffles each installed on a side of the moving frame.

[0011] Preferably, the conveying mechanism comprises: a movable plate located in the frame; a plurality of pairs of brackets equidistantly installed on the top surface of the movable plate; and a driving assembly for driving the movable plate and the moving frame to move.

[0012] Preferably, the driving assembly comprises: a mounting frame mounted on the frame body; a motor mounted on the mounting frame; two rotating rods, each penetrating through one side of the frame body and being rotatably connected with the frame body, one end of any of the rotating rods being fixedly connected with a power output shaft of the motor; two connecting plates, each being located in the frame body and being fixedly connected with two rotating rods; two rotating shafts, each being connected with a side of the connecting plate, the other end of the two rotating shafts being rotatably connected with the movable plate; and a second transmission belt sleeved on the two rotating rods.

[0013] Preferably, the driving assembly further comprises: two cams, each being fixedly sleeved on a rotating rod; wherein when the cam rotates, the moving frame is pushed to reciprocatingly horizontally move.

[0014] Preferably, the air blowing mechanism comprises: a fixed frame; a hot air machine mounted on the top surface of the fixed frame; a horizontal pipe fixedly connected with an air outlet pipe of the hot air machine; a shunt pipe fixedly connected with one end of the horizontal pipe away from the hot air machine; a plurality of hollow pipes each mounted on the fixed frame and located directly above the plurality of rotating bottle grooves; and a plurality of air outlet grooves each opened in the bottom surface of the hollow pipe and each facing the plurality of rotating bottle grooves.

[0015] As described above, due to the adoption of the above technical solutions, the present application has the following beneficial effects:

[0016] The continuous silk-screen printing processing method for packaging plastic bottles in the present application can greatly improve the drying efficiency of the printed graphics on the plastic bottles by adding a drying step, and improve the production efficiency. Meanwhile, the hot air is blown to the plastic bottles in the rotating bottle grooves by the air blowing mechanism to improve the drying speed of the silk-screen printed graphics on the plastic bottles. The plastic bottles are conveyed by the conveying mechanism, and when the conveying mechanism operates, the rotating wheel mechanism is driven to reciprocatingly horizontally move, thereby driving the plurality of rotating bottle mechanisms to simultaneously operate, so that the plastic bottles in the rotating bottle grooves are rotated, thereby increasing the contact area between the silk-screen printed graphics on the plastic bottles and the hot air, further accelerating the drying speed of the silk-screen printed graphics, and improving the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a perspective view of the moving and air blowing device and the plastic bottles in the embodiments of the present application.

[0019] Figure 2 Assembly structure schematic view of the rack, the bottle rotating mechanism and the carrying mechanism in the embodiment of the present application;

[0020] Figure 3 Perspective view of the carrying mechanism in the embodiment of the present application;

[0021] Figure 4 Assembly structure schematic view of the rotating wheel mechanism and the carrying mechanism in the embodiment of the present application;

[0022] Figure 5 Assembly structure schematic view of the rack and the rotating wheel mechanism in the embodiment of the present application Figure 1 ;

[0023] Figure 6 Assembly structure schematic view of the rack and the rotating wheel mechanism in the embodiment of the present application Figure 2 ;

[0024] Figure 7 Enlarged schematic view of A part of the embodiment of the present application Figure 6 ;

[0025] Figure 8 Perspective view of the blowing mechanism in the embodiment of the present application Figure 1 ;

[0026] Figure 9 Perspective view of the blowing mechanism in the embodiment of the present application Figure 2 ;

[0027] Figure 10 Flow chart of the continuous silk printing processing method for packaging plastic bottles in the embodiment of the present application;

[0028] Figures: 100, rack; 101, material guide plate; 102, bottle placing groove; 103, bottle rotating groove; 104, material feeding plate; 105, through groove; 106, sliding groove; 110, bottle rotating mechanism; 111, roller; 112, shaft rod; 113, first belt pulley; 114, second belt pulley; 115, first transmission belt; 116, gear; 120, rotating wheel mechanism; 121, moving frame; 122, rack; 123, sliding block; 124, baffle; 200, carrying mechanism; 201, movable plate; 202, bracket; 210, driving assembly; 211, mounting frame; 212, motor; 213, rotating rod; 214, connecting plate; 215, rotating shaft; 216, second transmission belt; 217, cam; 300, blowing mechanism; 301, fixed frame; 302, hot air blower; 303, horizontal pipe; 304, shunt pipe; 305, hollow pipe; 306, air outlet groove. DETAILED DESCRIPTION

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] Embodiment 1

[0031] As shown in the figure, the continuous silk screen printing processing method for packaging plastic bottles includes the following steps: Figure 10

[0032] Step one, pretreatment, use cleaning liquid or detergent to clean the plastic bottles thoroughly, remove the grease, dust and other impurities on the surface, and dry the plastic bottles after cleaning;

[0033] Step two, plate making, make a silk screen printing plate according to the required pattern and text, ensure the accuracy and clarity of the pattern, and then select the appropriate silk screen material and mesh count, apply the photosensitive agent on the surface of the silk screen, and solidify the pattern through exposure to form the required silk screen printing plate;

[0034] Step three, printing preparation, select the silk screen ink according to the material and printing requirements of the plastic bottles, and debug the printing equipment to make the printing equipment in good condition;

[0035] Step four, printing, fix the plastic bottles on the printing table, evenly scrape the ink over the silk screen printing plate through the squeegee, and make the ink penetrate onto the plastic bottles, fix the clean and dry plastic bottles on the printing table to ensure the accurate and stable position of the plastic bottles, then evenly apply the ink on the silk screen printing plate, and use the squeegee to scrape the ink over the silk screen, so that the ink penetrates onto the plastic bottles through the graphic part of the silk screen. During the printing process, the force, speed and angle of the squeegee should be strictly controlled to ensure the clarity and uniformity of the printed pattern. At the same time, the condition of the silk screen printing plate should be checked regularly, and the blocked mesh should be cleaned in time;

[0036] Step five, moving and drying, place the plastic bottles with printed graphics on the moving and blowing device, move the plastic bottles by the moving mechanism 200 in the moving and blowing device, dry the printed graphics on the plastic bottles by the blowing mechanism 300 in the moving and blowing device, and strictly control the temperature and air volume of the hot air to ensure that the ink is completely cured and does not affect the shape and color of the plastic bottles. The temperature of the hot air is controlled between 70-80℃;

[0037] Step six, quality inspection, comprehensively inspect the printing quality of the dried plastic bottles, including the clarity of the pattern, the accuracy of the color and the adhesion of the ink, etc. The unqualified plastic bottles need to be reworked or scrapped. ​

[0038] Embodiment 2

[0039] As Figures 1-9 shown, in other parts are the same as embodiment 1, the difference between this embodiment and embodiment 1 is that: the transfer blowing device comprises a frame 100, a group of bottle slots 102, a plurality of groups of bottle slots 103, a discharge plate 104, a plurality of groups of bottle turning mechanisms 110, a rotating wheel mechanism 120, a carrying mechanism 200 and a blowing mechanism 300.

[0040] The frame 100 is arranged in the shape of "U", a group of bottle slots 102 are opened on the frame 100, the bottle slots 102 are used for placing plastic bottles, and a group of bottle slots 102 comprises two symmetrically arranged bottle slots 102, which are arranged in the shape of a semicircle. A guide plate 101 is installed on one side of the frame 100, which is arranged in an inclined manner, and the end of the guide plate 101 away from the frame 100 is higher. The surface of the guide plate 101 is arranged in an inclined manner. By placing the plastic bottles on the guide plate 101, the plastic bottles will roll along the guide plate 101 into the bottle slots 102.

[0041] A plurality of groups of bottle slots 103 are equidistantly opened on the frame 100, and a group of bottle slots 103 comprises two bottle slots 103. In this embodiment, there are four groups of bottle slots 103. The discharge plate 104 is arranged on the side of the frame 100 away from the bottle slots 102. A plurality of groups of bottle turning mechanisms 110 are respectively installed in the plurality of bottle slots 103, and the bottle turning mechanisms 110 are used to drive the plastic bottles in the bottle slots 103 to rotate. The carrying mechanism 200 is used to carry the plastic bottles in the bottle slots 102 to the bottle slots 103 and to convey the plastic bottles in the bottle slots 103 to the discharge plate 104. The discharge plate 104 is arranged in an inclined manner, and the end of the discharge plate 104 away from the frame 100 is lower. The blowing mechanism 300 is used to convey hot air to the plurality of bottle slots 103.

[0042] Specifically, by starting the blowing mechanism 300, the blowing mechanism 300 conveys hot air into the plurality of bottle slots 103. Then, the plastic bottles are placed in the bottle slots 102. By starting the carrying mechanism 200, the carrying mechanism 200 carries the plastic bottles to the bottle slots 103, and then carries the plastic bottles to the discharge plate 104, so that the plastic bottles roll along the slope of the discharge plate 104. When the carrying mechanism 200 operates, it drives the rotating wheel mechanism 120 to move horizontally back and forth. When the rotating wheel mechanism 120 moves, it drives the plurality of groups of bottle turning mechanisms 110 to operate simultaneously, so that the plurality of groups of bottle turning mechanisms 110 drive the plurality of plastic bottles in the bottle slots 103 to rotate.

[0043] The hot air blown by the blowing mechanism 300 can increase the drying speed of the printed graphics on the plastic bottles. By the bottle turning mechanism 110, the plastic bottles can be rotated, so as to increase the contact area between the printed graphics on the plastic bottles and the hot air, and further accelerate the drying speed of the printed graphics.

[0044] As shown in Figures 5-7 , the rotating bottle mechanism 110 includes a plurality of rollers 111, a plurality of shafts 112, a plurality of first pulleys 113, a mounting rod, a plurality of second pulleys 114, a plurality of first transmission belts 115 and a gear 116. The plurality of rollers 111 are located in the rotating bottle groove 103, the rollers 111 are made of rubber, and the outer surface of the rollers 111 is rough; the plurality of shafts 112 are rotatably installed in the rotating bottle groove 103, the plurality of rollers 111 are fixedly sleeved on the plurality of shafts 112 respectively, one end of the shaft 112 extends out of the rotating bottle groove 103; the plurality of first pulleys 113 are fixedly sleeved on the plurality of shafts 112 respectively; the mounting rod is rotatably installed on the frame 100; the plurality of second pulleys 114 are fixedly sleeved on the mounting rod, and the plurality of second pulleys 114 are arranged one by one corresponding to the plurality of first pulleys 113; the first transmission belt 115 is used to connect the first pulley 113 and the second pulley 114; the gear 116 is fixedly connected with the end of the mounting rod away from the frame 100; in this embodiment, the rollers 111, the shafts 112, the first pulleys 113, the second pulleys 114 and the first transmission belts 115 are all four.

[0045] Specifically, when the gear 116 rotates, it drives the mounting rod to rotate, and then drives the plurality of second pulleys 114 to rotate, and then drives the plurality of first pulleys 113 to rotate through the plurality of first transmission belts 115, and then drives the plurality of shafts 112 to rotate, and then drives the plurality of rollers 111 to rotate simultaneously and in the same direction.

[0046] As shown in Figure 5 , the moving and blowing device further includes a through groove 105 and a sliding groove 106. The through groove 105 is provided through the frame 100; the sliding groove 106 is provided on the inner bottom surface of the frame 100.

[0047] As shown in Figure 4 and Figure 6 , the rotating wheel mechanism 120 includes a moving frame 121, a plurality of racks 122, a sliding block 123 and two pairs of baffles 124. The moving frame 121 is arranged in the shape of a "U", and the moving frame 121 is slidably connected with the through groove 105; the plurality of racks 122 are arranged on the top surface of the moving frame 121, and the plurality of racks 122 are respectively engaged with the plurality of gears 116; the sliding block 123 is installed on the bottom surface of the moving frame 121, and the sliding block 123 is slidably connected with the sliding groove 106; the two pairs of baffles 124 are respectively installed on the two sides of the moving frame 121.

[0048] Specifically, when the moving frame 121 reciprocally moves horizontally, it drives the sliding block 123 to move along the sliding groove 106, and then drives the plurality of gears 116 to rotate simultaneously through the plurality of racks 122.

[0049] As shown in Figure 3 andFigure 4 As shown, the conveying mechanism 200 comprises a movable plate 201, a plurality of pairs of carriers 202 and a driving assembly 210. The movable plate 201 is located in the frame body 100; the plurality of pairs of carriers 202 are equidistantly installed on the top surface of the movable plate 201; and the driving assembly 210 is used to drive the movable plate 201 and the moving frame 121 to move.

[0050] The driving assembly 210 comprises a mounting frame 211, a motor 212, two rotating rods 213, two connecting plates 214, two rotating shafts 215 and a second transmission belt 216. The mounting frame 211 is mounted on the frame body 100; the motor 212 is mounted on the mounting frame 211; the two rotating rods 213 are both penetrated through one side of the frame body 100 and are rotationally connected with the frame body 100, and one end of any rotating rod 213 is fixedly connected with the power output shaft of the motor 212; the two connecting plates 214 are both located in the frame body 100, and the two connecting plates 214 are respectively fixedly connected with the two rotating rods 213; the two rotating shafts 215 are respectively connected with the side surfaces of the two connecting plates 214, and the other ends of the two rotating shafts 215 are both rotationally connected with the movable plate 201. The two rotating rods 213 are both fixedly sleeved with pulleys, and the second transmission belt 216 is sleeved on the pulleys of the two rotating rods 213. The two cams 217 are respectively fixedly sleeved on the two rotating rods 213; and the baffle 124 on the moving frame 121 is matched with the cams 217, and the baffle 124 can improve the contact stability of the cams 217 and the moving frame 121.

[0051] Specifically, when the motor 212 operates, one rotating rod 213 will be driven to rotate, and then another rotating rod 213 will be driven to rotate through the second transmission belt 216. When the two rotating rods 213 rotate, the two connecting plates 214 will be driven to rotate counterclockwise, and then the movable plate 201 will be driven to rotate through the two rotating shafts 215, and then the carriers 202 will be driven to move. When the connecting plate 214 rotates one circle, the carrier 202 will convey the plastic bottle in the bottle slot 102 to the rotating bottle slot 103; when the connecting plate 214 rotates one circle, the carrier 202 will convey the plastic bottle in the rotating bottle slot 103 to another rotating bottle slot 103, so as to complete the conveying of the plastic bottle. When the cams 217 rotate, the two cams 217 will cooperate to push the moving frame 121 to move reciprocatingly and horizontally.

[0052] It should be noted that the size of the printed text on the plastic bottle is smaller than the distance between the two carriers 202, that is, when a pair of carriers 202 holds the plastic bottle, the two carriers 202 will not contact the printed text on the plastic bottle.

[0053] As Figure 8 and Figure 9As shown, the air blowing mechanism 300 comprises a fixed frame 301, a hot air blower 302, a horizontal pipe 303, a plurality of shunt pipes 304, a plurality of hollow pipes 305 and a plurality of air outlet grooves 306. The hot air blower 302 is installed on the top surface of the fixed frame 301; the horizontal pipe 303 is fixedly connected with the air outlet pipe of the hot air blower 302; the shunt pipes 304 are fixedly connected with the end of the horizontal pipe 303 away from the hot air blower 302; the hollow pipes 305 are installed on the fixed frame 301, and are respectively located above the plurality of rotating bottle grooves 103; the air outlet grooves 306 are respectively formed in the bottom surface of the hollow pipes 305, and respectively face the plurality of rotating bottle grooves 103.

[0054] Specifically, when the hot air blower 302 operates, hot air is delivered into the horizontal pipe 303, and then into the plurality of shunt pipes 304. The hot air in the shunt pipes 304 enters the plurality of hollow pipes 305, and then is blown out by the plurality of air outlet grooves 306. The blown-out hot air blows onto the plastic bottles in the rotating bottle grooves 103, thereby accelerating the drying of the printed graphics on the plastic bottles.

[0055] Working principle: in specific use, the plastic bottles printed with graphics are placed in the bottle placing grooves 102, and then the hot air blower 302 is started to deliver hot air into the horizontal pipe 303, and then into the plurality of shunt pipes 304. The hot air in the shunt pipes 304 enters the plurality of hollow pipes 305, and then is blown out by the plurality of air outlet grooves 306. The blown-out hot air blows onto the plastic bottles in the rotating bottle grooves 103.

[0056] The motor 212 is started again to drive the power output shaft of the motor 212 to rotate one rotating rod 213, and then drive another rotating rod 213 to rotate through the second transmission belt 216. When the two rotating rods 213 rotate, the two connecting plates 214 rotate, and then drive the movable plate 201 to rotate through the two rotating shafts 215, and then drive the bracket 202 to move. When the connecting plate 214 rotates one circle, the bracket 202 carries the plastic bottles in the bottle placing groove 102 to the rotating bottle groove 103. When the connecting plate 214 rotates another circle, the bracket 202 carries the plastic bottles in the rotating bottle groove 103 to another rotating bottle groove 103, until the plastic bottles are delivered to the discharge plate 104, and then roll down along the slope of the discharge plate 104.

[0057] When the plastic bottles are located in the rotating bottle grooves 103, the hot air blown out by the air outlet grooves 306 contacts the plastic bottles, thereby accelerating the drying efficiency of the graphics on the plastic bottles.

[0058] When the rotating rod 213 rotates, the two cams 217 will rotate, and the two rotating cams 217 will push the moving frame 121 to move horizontally, when the moving frame 121 moves, the plurality of racks 122 will move, and the racks 122 will drive the plurality of gears 116 to rotate, and then drive the installation rod to rotate, when the installation rod rotates, the plurality of second belt pulleys 114 will rotate, and then drive the plurality of first belt pulleys 113 to rotate through the plurality of first transmission belts 115, and then drive the plurality of shaft rods 112 to rotate, and then drive the plurality of rollers 111 to rotate simultaneously and in the same direction, the plurality of rotating rollers 111 will drive the plastic bottles in the rotating bottle groove 103 to rotate, thereby increasing the contact area of the printed text on the plastic bottles and the hot air, and further accelerating the drying speed of the printed text.

[0059] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

[0060] The above disclosed preferred embodiments of the present application are only used to help explain the present application. The preferred embodiments do not describe all the details, and the present application is not limited to the specific embodiments. Obviously, according to the content of the present application, many modifications and changes can be made. The present application selects and describes these embodiments in order to better explain the principles and practical applications of the present application, so that the skilled in the art can well understand and use the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. A continuous silk-screening process for packaging plastic bottles, characterized in that, It comprises the following steps: Step one, pretreatment, clean the plastic bottle, remove the oil, dust and other impurities on the surface of the plastic bottle; Step two, plate making, make a silk screen printing plate according to the pattern and text to be printed; Step three, printing preparation, prepare the silk screen printing ink and adjust the printing equipment; Step four, printing, fix the plastic bottle on the printing table, evenly scrape the ink through the squeegee to the silk screen printing plate, so that the ink penetrates onto the plastic bottle; Step five, transportation and drying, place the plastic bottle with printed patterns on the transportation and blowing device, the carrying mechanism (200) in the transportation and blowing device carries the plastic bottle, and the blowing mechanism (300) in the transportation and blowing device quickly dries the printed patterns on the plastic bottle; Step six, quality inspection, comprehensively inspect the printing quality of the dried plastic bottle; The transportation and blowing device comprises: a frame body (100); a group of bottle placing grooves (102) opened on the frame body (100) for placing plastic bottles; a plurality of bottle rotating grooves (103) equidistantly opened on the frame body (100); a discharging plate (104) arranged on the side of the frame body (100) away from the bottle placing grooves (102); a plurality of bottle rotating mechanisms (110) respectively installed in the plurality of bottle rotating grooves (103) for driving the plastic bottles in the bottle rotating grooves (103) to rotate; a rotating wheel mechanism (120); a carrying mechanism (200) for carrying the plastic bottles in the bottle placing grooves (102) to the bottle rotating grooves (103) and conveying the plastic bottles in the bottle rotating grooves (103) to the discharging plate (104); a blowing mechanism (300) for conveying hot air to the plurality of bottle rotating grooves (103); When the carrying mechanism (200) operates, the rotating wheel mechanism (120) drives the plurality of bottle rotating mechanisms (110) to operate, so that the plurality of bottle rotating mechanisms (110) drive the plurality of plastic bottles in the bottle rotating grooves (103) to rotate; The bottle rotating mechanism (110) comprises: a plurality of rollers (111) located in the bottle rotating grooves (103); a plurality of shaft rods (112) rotationally installed in the bottle rotating grooves (103), the plurality of rollers (111) are respectively fixedly sleeved on the plurality of shaft rods (112), and one end of the shaft rod (112) extends out of the bottle rotating groove (103); a plurality of first belt pulleys (113) respectively fixedly sleeved on the plurality of shaft rods (112); an installation rod rotationally installed on the frame body (100); a plurality of second belt pulleys (114) fixedly sleeved on the installation rod and corresponding to the plurality of first belt pulleys (113); a plurality of first transmission belts (115) connecting the first belt pulleys (113) and the second belt pulleys (114); a gear (116) fixedly connected with one end of the installation rod away from the frame body (100). The gear (116) and the mounting rod rotate, a plurality of the first transmission belts (115) drive a plurality of shafts (112) to rotate simultaneously, and a plurality of the rollers (111) rotate simultaneously and in the same direction. The conveying mechanism (200) comprises: a movable plate (201) located in the frame body (100); a plurality of pairs of brackets (202) equidistantly mounted on the top surface of the movable plate (201); a driving assembly (210) for driving the movable plate (201) and the moving frame (121) to move; the driving assembly (210) comprises: a mounting frame (211) mounted on the frame body (100); a motor (212) mounted on the mounting frame (211); two rotating rods (213) each penetrating through one side of the frame body (100) and rotationally connected with the frame body (100), one end of any rotating rod (213) being fixedly connected with the power output shaft of the motor (212); two connecting plates (214) each located in the frame body (100) and fixedly connected with two rotating rods (213); two rotating shafts (215) each connected with the side surface of a connecting plate (214), the other end of each rotating shaft (215) being rotationally connected with the movable plate (201); a second transmission belt (216) sleeved on the two rotating rods (213).

2. The continuous silk-screen printing process for packaging plastic bottles according to claim 1, characterized in that, The conveying and blowing device further comprises: a through groove (105) penetratingly provided on the frame body (100); a sliding groove (106) provided on the inner bottom surface of the frame body (100).

3. The continuous silk-screening process for packaging plastic bottles according to claim 2, characterized in that, The rotating wheel mechanism (120) comprises: a moving frame (121) in the shape of "U" and slidingly connected with the through groove (105); a plurality of racks (122) each provided on the top surface of the moving frame (121) and meshingly connected with a plurality of the gears (116); a sliding block (123) mounted on the bottom surface of the moving frame (121) and slidingly connected with the sliding groove (106); two pairs of baffles (124) each mounted on the two sides of the moving frame (121).

4. The continuous silk-screening process for packaging plastic bottles according to claim 3, characterized in that, The driving assembly (210) further comprises: two cams (217) each fixedly sleeved on a rotating rod (213); when the cam (217) rotates, the moving frame (121) is pushed to reciprocatingly horizontally move.

5. The continuous silk-screening process for packaging plastic bottles according to claim 4, characterized in that, The blowing mechanism (300) comprises: a fixed frame (301); a hot air machine (302) mounted on the top surface of the fixed frame (301); a horizontal pipe (303) fixedly connected with the air outlet pipe of the hot air machine (302); a shunt pipe (304) fixedly connected with one end of the horizontal pipe (303) away from the hot air machine (302); a plurality of hollow pipes (305) each mounted on the fixed frame (301) and located directly above a plurality of the bottle rotating grooves (103); a plurality of air outlet grooves (306) each provided on the bottom surface of a hollow pipe (305) and each facing a plurality of the bottle rotating grooves (103).

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