A gasket forming device inside a bottle cap

Abstract

The present invention discloses a forming device for the gasket inside the bottle cap, which includes a glue ball extrusion device, a hopper for storing the bottle caps, and a feeding mechanism, a conveying component, a heating component, a glue ball adding mechanism and an extrusion forming mechanism arranged in sequence along the conveying direction of the bottle caps. The present invention can realize automated and assembly-line production, and there can be smooth and efficient connection and cooperation among various production processes. It can solidify and form the gasket on the inner side of the bottle cap printed with a two-dimensional code. By utilizing the relevant characteristics of the gasket, it not only plays a role in protecting the two-dimensional code, but also does not prevent the normal recognition of the two-dimensional code.

Description

Technical Field

[0001] The present invention relates to the technical field of bottle cap production and processing, and particularly to a forming device for the inner gasket of a bottle cap. Background Art

[0002] As a part of liquor packaging, the bottle cap has the following three main functions: 1. Sealing property: It can protect the liquor, effectively block the contact between the external air and the internal liquor, prevent the evaporation and volatilization of the internal liquor, and keep the liquor quality unchanged for a long time. This is the most basic function of the bottle cap; 2. Decorative property: Although the bottle cap is small, it can play a finishing touch to the whole packaging. A bottle cap with novel design and bright color can not only improve the grade of liquor products, but also highlight the theme culture and enterprise spirit of the manufacturer; 3. Anti-counterfeiting property: Through various means such as structure, surface decoration, and materials, it is difficult for counterfeiters to imitate, thereby improving the anti-counterfeiting performance. Anti-counterfeiting has become one of the important functions of the bottle cap.

[0003] At present, in the bottle cap manufacturing industry, in addition to using traditional anti-counterfeiting structures, with the continuous development of information technology and the popularization of mobile intelligent terminals, due to the characteristics that two-dimensional codes can store rich information and are easy to be recognized by mobile intelligent terminals (mobile phones), they have become a widely used way to record product information. Bottle cap manufacturing enterprises print two-dimensional codes on the inner side of the bottle cap. After the bottle cap is opened, a mobile intelligent terminal (mobile phone) can be used to recognize the two-dimensional code, and purposes such as product anti-counterfeiting, information traceability, and marketing promotion can be achieved.

[0004] In addition, as a common built-in part of the bottle cap, the gasket is usually transparent and has good sealing, buffering, shock resistance, heat insulation, moisture-proof, chemical corrosion resistance and other properties, and is non-toxic and non-absorbent. At present, two-dimensional codes storing product information are usually printed on the inner side of the bottle cap to achieve effects such as anti-counterfeiting, information traceability, and marketing promotion. If the gasket is solidified and formed on the inner side of the bottle cap on which the two-dimensional code has been printed, the above-mentioned characteristics of the gasket can be utilized to not only protect the two-dimensional code but also not prevent the normal recognition of the two-dimensional code. Therefore, it is necessary to design a forming device for the inner gasket of a bottle cap to solidify and form the gasket on the inner side of the bottle cap on which the two-dimensional code has been printed. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects and deficiencies existing in the prior art, and provide a forming device for the inner gasket of a bottle cap, which can solidify and form the gasket on the inner side of the bottle cap on which the two-dimensional code has been printed, and utilize the relevant characteristics of the gasket to protect the two-dimensional code and not prevent the normal recognition of the two-dimensional code.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A gasket forming device inside a bottle cap, characterized in that: it includes a rubber ball extrusion device, a hopper for storing bottle caps, and a feeding mechanism, a conveying component, a heating component, a rubber ball adding mechanism and an extrusion forming mechanism arranged in sequence along the conveying direction of the bottle cap. The rubber ball extrusion device includes an extruder and an extrusion head fixedly connected to the discharge end of the extruder. The extrusion head can discharge rubber balls. The conveying component, the heating component, the rubber ball adding mechanism and the extrusion forming mechanism perform rotational movements in opposite directions to each other;

[0008] The feeding mechanism includes a vertical lifting and conveying mechanism and a chute. The chute is fixedly connected to one side of the upper end of the vertical lifting and conveying mechanism. The open ends of the bottle caps in the hopper face forward and are arranged one by one on the vertical lifting and conveying mechanism. Then, they are lifted to a certain height by the vertical lifting and conveying mechanism and moved into the chute, and are changed to have the open end facing upward in the chute;

[0009] The conveying component includes a first conveying turntable and a second conveying turntable. The discharge end of the chute is close to but does not contact the feeding side of the first conveying turntable. The bottle caps fall one by one into the respective card slots on the outer periphery of the first conveying turntable at the feeding side;

[0010] The heating component includes an annular heating plate for heating the bottle caps. The bottle caps are moved one by one from the discharge side of the first conveying turntable to the annular heating plate and are arranged at equal intervals on the annular heating plate;

[0011] The rubber ball adding mechanism includes a third conveying turntable and a rotating barrel that rotate synchronously and in the same direction, and a fixed annular guide rail. A number of vertical holes extending from the bottom surface upward to the upper part are respectively arranged along the circumferential direction of the rotating barrel. A number of vertical grooves communicating with the number of vertical holes one by one are respectively arranged along the circumferential direction on the outer wall of the rotating barrel. A vertical rod that can move up and down inside each vertical hole is arranged in each vertical hole. A first roller is installed on the outer wall of the vertical rod on the outer side of the corresponding vertical groove. The first roller rolls along the annular guide rail. The annular guide rail is provided with a V-shaped depression on the discharge side close to the third conveying turntable. The extrusion head is located on the incoming side of the feeding side of the third conveying turntable; The heated bottle caps are moved one by one from the discharge side on the annular heating plate to the respective card slots of the third conveying turntable. The number of vertical rods rotate with the rotating barrel. When rotating above the extrusion head, they stick to the rubber balls. When the first roller moves to the lowest point of the V-shaped depression, the corresponding vertical rod adds the rubber balls to the bottle cap below. The rubber balls adhere to the inner side surface of the bottle cap;

[0012] The described extrusion forming mechanism includes an upper circular fixed seat, a circular conveyor tray, and a lower circular fixed seat that are sequentially arranged from top to bottom. The upper circular fixed seat, the circular conveyor tray, and the lower circular fixed seat rotate synchronously and in the same direction. A number of upper cylinders and a number of lower cylinders that protrude towards each other are respectively fixed along the circumference on the upper circular fixed seat and the lower circular fixed seat. The end of the piston rod of each upper cylinder is fixedly connected with a pressing block, and the end of the piston rod of each lower cylinder is fixedly connected with a jacking block. The circular conveyor tray is provided with through holes along the circumference for the piston rods of the respective lower cylinders to pass through; the bottle caps with glue balls adhered to the inner side are sequentially moved one by one from the discharge side of the third transfer turntable to the respective card slots of the second transfer turntable, and then sequentially moved one by one from the feed side of the circular conveyor tray to each jacking block. During the rotation of the circular conveyor tray, the corresponding upper cylinder and lower cylinder gradually protrude towards each other, and the pressing block and the jacking block respectively squeeze the glue balls on the inner side of the bottle cap from the upper and lower sides. After cooling and curing, a thin and transparent gasket is formed on the inner side of the bottle cap, and then it is discharged from the discharge side of the circular conveyor tray.

[0013] Further, the vertical lifting and conveying mechanism includes a first belt conveyor that is vertically arranged and tilted backward. The hopper is fixedly connected to the bottom of the front side of the first belt conveyor, and the rear side of the hopper is open. A number of cross bars are fixedly connected along the width direction of the conveyor belt of the first belt conveyor at intervals; the bottle caps in the hopper have their open ends facing forward and are sequentially arranged on each cross bar. As the first belt conveyor operates, they are lifted upward along with the cross bar where they are located.

[0014] Further, the width of each cross bar is half of the depth of the bottle cap, and the distance between adjacent cross bars is slightly larger than the outer diameter of the bottle cap.

[0015] Further, the chute is arranged to slope downward from its feed end to its discharge end and includes a vertical section with an open end facing forward. The feed end of the vertical section is fixedly connected to one side of the upper end of the first belt conveyor, and the other end of the vertical section is twisted to form a horizontal section with an open end facing upward; a number of first air nozzle pipes are respectively arranged on the front side of the upper end of the first belt conveyor facing the chute, and a number of second air nozzle pipes are respectively arranged on the front side of the vertical section and the upper side of the horizontal section facing the discharge end; under the blowing action of the number of first air nozzle pipes, the bottle caps are moved from the cross bar rising to the same height as the vertical section into the vertical section, and their open ends face forward and are sequentially arranged in the vertical section, and then moved into the horizontal section, turning into open ends facing upward and being sequentially arranged in the horizontal section, and under the blowing action of the number of second air nozzle pipes, they are moved towards the discharge end of the horizontal section.

[0016] Furthermore, the rubber ball adding mechanism also includes a first chassis and a plurality of brackets distributed along the circumference of the first chassis, the third conveying turntable and the rotating barrel are both rotatably mounted on the first chassis, and the annular guide rail is fixedly connected between the plurality of brackets.

[0017] Furthermore, a circular cross bar is fixedly connected between the several brackets above the circular guide rail to limit the first roller from the upper side to prevent the first roller from jumping up and down during rolling along the circular guide rail.

[0018] Furthermore, a semicircular groove is provided at the bottom end of the vertical rod.

[0019] Furthermore, the extrusion molding mechanism also includes a second chassis, the upper annular fixed seat, the annular conveying tray and the lower annular fixed seat are all rotatably mounted on the second chassis, and the bottom end of each lower cylinder is equipped with a second roller that can roll along the second chassis.

[0020] Furthermore, a discharge mechanism is provided on the discharge side of the annular conveyor tray, and the discharge mechanism includes a guide groove arranged on the discharge side of the annular conveyor tray and a second belt conveyor arranged transversely, and the guide groove is arranged to be inclined downward from its feed end to the discharge end, and the feed end of the guide groove is fixedly connected with a baffle on the side away from the discharge side of the annular conveyor tray, and the baffle is arranged along the width direction of the annular conveyor tray; the bottle cap with a gasket formed on the inner side is moved to the second belt conveyor through the guide groove under the blocking action of the baffle.

[0021] Furthermore, side guards are provided on the outer sides of the first conveying turntable, the second conveying turntable and the third conveying turntable, and on the inner edge and the outer edge of the annular conveying material tray along the moving path of the bottle caps.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The feeding mechanism adopted by the present invention includes a vertical lifting and conveying mechanism and a chute. During the operation of the vertical lifting and conveying mechanism, the bottle caps originally stored in the hopper in a disorderly manner can be arranged one by one on the vertical lifting and conveying mechanism with their open ends facing forward, and then after being lifted to a certain height by the vertical lifting and conveying mechanism, they are moved into the chute, and are transformed into an open end facing upward in the chute, and are gradually fed forward, providing the subsequent process with the bottle caps in the required posture (open end facing upward), thereby realizing automatic and continuous feeding.

[0024] 2. The conveying components used in the present invention include first and second conveying turntables, which are respectively arranged between the feeding mechanism and the heating component and between the rubber ball adding mechanism and the extrusion molding mechanism, and can receive and convey bottle caps between adjacent processes, so that the feeding process and the heating process, as well as the rubber ball adding process and the extrusion molding process can be smoothly and efficiently connected and coordinated.

[0025] 3. The heating component used in the present invention includes a circular heating plate, which can heat the bottle cap. Without damaging the existing two-dimensional code layer on the inner side of the bottle cap, the bottle cap fed into the rubber ball adding mechanism has a certain temperature, which can better adhere to the rubber ball and is conducive to subsequent extrusion molding.

[0026] 4. The rubber ball adding mechanism adopted in the present invention comprises a third conveying turntable and a rotating barrel which rotate synchronously and in the same direction and a fixed annular guide rail, wherein a plurality of vertical rods rotate with the rotating barrel, and when the rotating barrel rotates to the top of the extruder head, the rubber balls can be stuck thereon, and when the rotating barrel rotates to the lowest point of the V-shaped sunken part, the rubber balls are added to the bottle caps below, so that the rubber balls are adhered to the inner side surfaces of the bottle caps, and the rubber balls can be automatically "taken" from the extruder head and "added" to the bottle caps, thereby realizing automatic and continuous addition of rubber balls to the bottle caps.

[0027] 5. The extrusion molding mechanism adopted in the present invention comprises an upper annular fixed seat, an annular conveying material tray and a lower annular fixed seat which are sequentially arranged from top to bottom and rotate synchronously and in the same direction, and a plurality of upper and lower cylinders extending toward each other are fixed correspondingly along the circumferential direction on the upper and lower annular fixed seats, and a pressure block and a top block are fixedly connected to the end of the piston rod of each upper and lower cylinder. During the rotation of the annular conveying material tray, the corresponding upper cylinder and lower cylinder gradually extend toward each other, and the pressure block and the top block respectively correspond to the rubber ball squeezing the inner side surface of the bottle cap from the upper and lower sides, and after cooling and solidification, a thin and transparent gasket is formed on the inner side surface of the bottle cap, thereby realizing automatic and continuous forming of the inner gasket of the bottle cap.

[0028] To sum up, the present invention can realize automated, assembly-line production, and each production process can produce smooth and efficient connection and coordination. First, the bottle caps with the required posture (open end facing upward) are arranged, and the feeding is automatically and continuously performed; then the bottle caps are heated so that the bottle caps can better adhere to the rubber balls and are conducive to subsequent extrusion molding; then the rubber balls are automatically and continuously added to the bottle caps so that the rubber balls adhere to the inner side of the bottle caps; finally, a thin and transparent gasket is formed on the inner side of the bottle cap by squeezing the rubber balls and cooling and solidifying them; thereby, the gasket can be solidified and formed on the inner side of the bottle cap on which the two-dimensional code has been printed, and the relevant characteristics of the gasket are utilized, which not only plays a role in protecting the two-dimensional code, but also does not hinder the normal recognition of the two-dimensional code. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural schematic diagram of the present invention. The direction indicated by the curved arrow in the figure is the rotation direction, and the direction indicated by the straight line is the conveying direction.

[0030] Figure 2 This is a partial structure schematic of the present invention Figure 1 In the figure, the direction indicated by the curved arrow is the rotation direction.

[0031] Figure 3 This is a partial structure schematic of the present invention Figure 2 In the figure, the direction indicated by the curved arrow is the rotation direction.

[0032] Figure 4 This is a partial structure schematic of the present invention Figure 3 In the figure, the direction indicated by the straight line is the conveying direction.

[0033] Figure 5 This is a structural schematic diagram of the feeding mechanism of the present invention.

[0034] Figure 6 This is a structural schematic diagram of the rubber ball adding mechanism of the present invention. In the figure, the direction indicated by the curved arrow is the rotation direction.

[0035] Figure 7 This is a structural schematic diagram of the extrusion molding mechanism of the present invention. In the figure, the direction indicated by the curved arrow is the rotation direction.

[0036] Figure 8 This is a state schematic diagram of the bottle cap of the present invention. Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] See Figure 1-8 , a device for forming an inner gasket of a bottle cap, including a rubber ball extrusion device 3, a hopper 4 for storing the bottle cap 1, and a feeding mechanism 5, a conveying component 6, a heating component 7, a rubber ball adding mechanism 8, and an extrusion molding mechanism 9 arranged in sequence along the conveying direction of the bottle cap 1. The rubber ball extrusion device 3 includes an extruder 31 and an extrusion head 32 fixedly connected to the discharge end of the extruder 31. The extrusion head 32 can discharge the rubber ball 2, and the conveying component 6, the heating component 7, the rubber ball adding mechanism 8, and the extrusion molding mechanism 9 perform rotational movements in opposite directions to each other.

[0039] Specifically, in this embodiment, the first transfer turntable 61 rotates clockwise, the annular heating plate 71 rotates counterclockwise, the third transfer turntable 81 rotates clockwise, the second transfer turntable 62 rotates counterclockwise, and the annular transfer tray 92 rotates clockwise.

[0040] It should be noted that trays 15 that rotate synchronously and in the same direction as them should be provided below the first transfer turntable 61 and the second transfer turntable 62, and the trays 15 support the bottle caps 1 from the lower side.

[0041] In addition, the transfer component 6, the heating component 7, and the glue ball adding mechanism 8 should be installed on the same workbench (not shown in the figure), and a motor (not shown in the figure) for driving the transfer component 6, the heating component 7, and the glue ball adding mechanism 8 to perform a rotary motion should be installed below the workbench.

[0042] The feeding mechanism 5 includes a vertical lifting and conveying mechanism 51 and a chute 52. The chute 52 is fixedly connected to one side of the upper end of the vertical lifting and conveying mechanism 51. The bottle caps 1 in the hopper 4 have their open ends facing forward and are arranged one by one in sequence on the vertical lifting and conveying mechanism 51. Then, after being lifted to a certain height by the vertical lifting and conveying mechanism 51, they are moved into the chute 52 and are transformed into having their open ends facing upward in the chute 52.

[0043] The transfer component 6 includes a first transfer turntable 61 and a second transfer turntable 62. The discharge end of the chute 52 extends to the feeding side of the first transfer turntable 61, close to but not in contact with the feeding side of the first transfer turntable 61. The bottle caps 1 fall into the respective card slots on the outer periphery of the first transfer turntable 61 one by one in sequence at the feeding side of the first transfer turntable 61.

[0044] The heating component 7 includes an annular heating plate 71 for heating the bottle caps 1. The bottle caps 1 are moved to the annular heating plate 71 one by one in sequence from the discharge side of the first transfer turntable 61 and are arranged at equal intervals on the annular heating plate 71.

[0045] The glue ball adding mechanism 8 includes a third transfer turntable 81 and a rotating barrel 82 that rotate synchronously and in the same direction, as well as a fixed annular guide rail 83. A number of vertical holes (not shown in the figure) extending upward from its bottom surface to the upper part are provided along the circumferential direction of the rotating barrel 81. A number of vertical grooves 84 communicating with the number of vertical holes one by one are provided along the circumferential direction on the outer wall of the rotating barrel 82. A vertical rod 85 that can move up and down inside is provided in each vertical hole. A first roller 86 is installed on the outer wall of the vertical rod 85 outside the corresponding vertical groove. The first roller 86 rolls along the annular guide rail 83. The annular guide rail 83 is provided with a V-shaped depression 87 on the discharge side close to the third transfer turntable 81. The extrusion head 32 is located on the incoming side of the feed side of the third transfer turntable 81. The heated bottle caps 1 are sequentially moved one by one from the discharge side of the annular heating plate 71 to the respective card slots of the third transfer turntable 81. The number of vertical rods 85 rotate with the rotating barrel 82. When rotating above the extrusion head 32, the glue balls 2 are stuck. When the first roller 86 moves to the lowest point of the V-shaped depression 87, the corresponding vertical rod adds the glue ball 2 to the bottle cap 1 below, so that the glue ball 2 adheres to the inner side surface of the bottle cap 1.

[0046] The extrusion molding mechanism 9 includes an upper annular fixed seat 91, an annular transfer tray 92, and a lower annular fixed seat 93 arranged in sequence from top to bottom. The upper annular fixed seat 91, the annular transfer tray 92, and the lower annular fixed seat 93 rotate synchronously and in the same direction. A number of upper air cylinders 94 and a number of lower air cylinders 95 extending outwards in opposite directions are respectively fixed along the circumferential direction on the upper annular fixed seat 91 and the lower annular fixed seat 93. The end of the piston rod of each upper air cylinder is fixedly connected with a pressing block 96, and the end of the piston rod of each lower air cylinder is fixedly connected with a jacking block 97. The annular transfer tray 92 is provided with through holes 910 for the piston rods of the respective lower air cylinders to pass through along the circumferential direction. The bottle caps 1 with glue balls 2 adhered to the inner side surface are sequentially moved one by one from the discharge side of the third transfer turntable 81 to the respective card slots of the second transfer turntable 62, and then sequentially moved one by one from the feed side of the annular transfer tray 92 to the respective jacking blocks. During the rotation of the annular transfer tray 92, the corresponding upper air cylinder and lower air cylinder gradually extend outwards in opposite directions, and the pressing block 96 and the jacking block 97 respectively squeeze the glue balls 2 on the inner side surface of the bottle cap 1 from the upper and lower sides. After cooling and solidification, a thin and transparent gasket 10 is formed on the inner side surface of the bottle cap 1 and then discharged from the discharge side of the annular transfer tray 92.

[0047] In this embodiment, the vertical lifting and conveying mechanism 51 includes a first belt conveyor 511 that is vertically arranged and tilted backward. The hopper 4 is fixedly connected to the bottom of the front side of the first belt conveyor 511, and the rear side of the hopper 4 is open. A number of cross bars 512 are fixedly connected to the conveyor belt of the first belt conveyor 511 at intervals along its width direction. The open ends of the bottle caps 1 in the hopper 4 face forward and are arranged on each cross bar one by one in sequence. As the first belt conveyor 511 operates, they are lifted upward along with the cross bar where they are located.

[0048] In this embodiment, the width of each cross bar is half of the depth of the bottle cap 1, and the distance between adjacent cross bars is slightly larger than the outer diameter of the bottle cap 1.

[0049] Thus, by setting the width of each cross bar to be half of the depth of the bottle cap 1, during the operation of the first belt conveyor 511, when the bottle cap 1 in the hopper 4 moves onto the corresponding cross bar, if the open end of the bottle cap 1 faces backward, that is, its closed end faces forward, since the center of gravity of the bottle cap 1 is close to its closed end, it will fall off the cross bar where it is located as the height increases and return to the hopper 4; if the open end of the bottle cap 1 faces forward, the bottle cap 1 can be arranged on the cross bar where it is located and will not fall off as the height increases.

[0050] In addition, by setting the distance between adjacent cross bars to be slightly larger than the outer diameter of the bottle cap 1, on the basis of not affecting the arrangement of the bottle cap 1 on the corresponding cross bar, the number of cross bars can be increased as much as possible, and as many bottle caps 1 can be arranged and lifted as possible, so as to improve the lifting efficiency.

[0051] In this embodiment, the chute 52 is inclined downward from its feed end to its discharge end, and includes a vertical section 521 with an open end facing forward. The feed end of the vertical section 521 is fixedly connected to one side of the upper end of the first belt conveyor 511, and the other end of the vertical section 521 is twisted to form a horizontal section 522 with an open end facing upward. A number of first air nozzle pipes 11 are provided on the front side of the upper end of the first belt conveyor 511 facing the chute 52, and a number of second air nozzle pipes 12 are provided on the front side of the vertical section 521 and the upper side of the horizontal section 522 facing the discharge end. Under the blowing action of the number of first air nozzle pipes 11, the bottle caps 1 move from the cross bar rising to the same height as the vertical section 521 into the vertical section 521, and the open ends face forward and are arranged in the vertical section 521 one by one in sequence, and then move into the horizontal section 522, turning into the open ends facing upward and being arranged in the horizontal section 522 one by one in sequence, and under the blowing action of the number of second air nozzle pipes 12, they move toward the discharge end of the horizontal section 522.

[0052] In this embodiment, the rubber ball adding mechanism 8 further includes a first chassis 88 and a plurality of brackets 89 circumferentially distributed along the first chassis 88. The third transfer turntable 81 and the rotating barrel 82 are both rotatably mounted on the first chassis 88, and the annular guide rail 83 is fixedly connected between the plurality of brackets 89.

[0053] In this embodiment, an annular cross stop 810 is fixedly connected above the annular guide rail 83 between the plurality of brackets 89 to limit the first roller 86 from above, so as to prevent the first roller 86 from jumping up and down during the process of rolling along the annular guide rail 83 and maintain stability.

[0054] In this embodiment, a semi-circular groove 811 is provided at the bottom end of the vertical rod 85, which can better adhere to the rubber ball 2.

[0055] In this embodiment, the extrusion molding mechanism 9 further includes a second chassis 98. The upper annular fixing seat 91, the annular transfer tray 92 and the lower annular fixing seat 93 are all rotatably mounted on the second chassis 98. The bottom end of each lower air cylinder is equipped with a second roller 99 that can roll along the second chassis, so as to maintain the stability of the rotary motion of the upper annular fixing seat 91, the annular transfer tray 92 and the lower annular fixing seat 93.

[0056] In this embodiment, a discharging mechanism 13 is provided on the discharging side of the annular transfer tray 92. The discharging mechanism 13 includes a guide groove 131 provided on the discharging side of the annular transfer tray 92 and a second belt conveyor 132 arranged horizontally. The guide groove 131 is inclined downward from its feeding end to its discharging end. The feeding end of the guide groove 131 is fixedly connected with a baffle 133 on the side away from the discharging side of the annular transfer tray 92. The baffle 133 is arranged along the width direction of the annular transfer tray 92; the bottle cap 1 with the gasket 10 formed on its inner side is moved onto the second belt conveyor 132 through the guide groove 131 under the blocking action of the baffle 133.

[0057] In this embodiment, side stops 14 are provided along the moving path of the bottle cap 1 on the outer sides of the first transfer turntable 61, the second transfer turntable 62 and the third transfer turntable 81, as well as on the inner and outer edges of the annular transfer tray 92, so as to prevent the bottle cap from falling off during the moving process.

[0058] The following further describes the present invention with reference to the accompanying drawings:

[0059] The raw materials for producing the transparent gasket 10 are added to the extruder 31. Under high-temperature conditions, relying on the pressure and shear force generated by the rotation of the screw, the raw materials are fully plasticized and uniformly mixed, and then discharged from the extrusion head 32 to form rubber balls 2 (gel-like spherical shapes) at its discharging end.

[0060] The usage method of the present invention, that is, the forming method of the gasket inside the bottle cap 1, is as follows:

[0061] 1. Loading: The vertical lifting and conveying mechanism 51 operates at a low speed, that is, the first belt conveyor 511 operates at a low speed. The bottle caps 1 in the hopper 4 are driven to "climb" onto each cross bar passing through the hopper 4. The bottle caps 1 have their openings facing forward and are arranged one by one in sequence on the corresponding cross bars, and are gradually lifted along with the cross bars. When the bottle caps 1 rise to a height equal to that of the vertical section 521, under the blowing action of several first air nozzle tubes 11, the bottle caps 1 move into the vertical section 521, with their open ends facing forward and arranged one by one in sequence in the vertical section 521, and then move into the horizontal section 522, naturally changing to have their open ends facing upward and arranged one by one in sequence in the horizontal section 522, and under the blowing action of several second air nozzle tubes 12, move towards the discharge end of the horizontal section 522.

[0062] 2. Heating: The bottle caps 1 fall one by one into the respective card slots on the outer periphery of the first transfer turntable 61 at the feeding side. As the first transfer turntable 61 rotates clockwise and the annular heating plate 71 rotates counterclockwise, the bottle caps 1 move one by one from the discharge side of the first transfer turntable 61 to the annular heating plate 71 and are arranged at equal intervals on the annular heating plate 71, and the bottle caps are heated by the annular heating plate 71.

[0063] It should be noted that since the purpose of heating the bottle caps 1 above is to make the bottle caps 1 have a certain temperature, so as to facilitate the glue balls 2 to break away from the corresponding vertical rods and adhere to the inner side surface of the bottle caps 1. Therefore, the heating temperature will not be too high and will not damage the paint on the outer surface of the bottle caps 1 and the two-dimensional code printed on their inner side surfaces.

[0064] 3. Adding glue balls: The heated bottle caps 1 move one by one from the discharge side of the annular heating plate 71 into the respective card slots of the third transfer turntable 81. The third transfer turntable 81 and the rotating barrel 82 rotate clockwise synchronously. Several vertical rods 85 rotate clockwise along with the rotating barrel 82. The first roller 86 rolls clockwise along the annular guide rail 83, and each vertical rod rotates synchronously with the bottle caps below. When each vertical rod rotates above the extrusion head 32, glue balls 2 are successively hung on them; when the first roller 86 moves to the lowest point of the V-shaped depression 87, each vertical rod extends into the bottle caps 1 below in sequence, adding the glue balls 2 to the bottle caps 1 below. Since the bottle caps 1 have a certain temperature, the glue balls 2 will break away from the corresponding vertical rods and adhere to the inner side surface of the bottle caps 1.

[0065] 4. Extrusion molding: In the initial state, the piston rods of several upper air cylinders 94 and several lower air cylinders 95 are all in the retracted state. The top block 97 retracts into the through hole 910, and the upper surface of the top block 97 is flush with the upper surface of the annular transfer tray 92;

[0066] The second transfer turntable 62 rotates counterclockwise. The bottle caps 1 with the adhesive balls 2 adhered to the inner side are successively moved one by one from the discharge side of the third transfer turntable 81 to the respective card slots of the second transfer turntable 62, and then successively moved one by one from the feed side of the annular transfer tray 92 to the respective top blocks. During the process of the annular transfer tray 92 rotating clockwise, the corresponding upper air cylinder and lower air cylinder gradually extend towards each other, and the pressing block 96 and the top block 97 respectively squeeze the adhesive ball 2 on the inner side of the bottle cap 1 from the upper and lower sides. After natural cooling and curing, a thin and transparent gasket 10 is formed on the inner side of the bottle cap 1.

[0067] 5. Material discharging: When several upper air cylinders 94 and several lower air cylinders 95 rotate to be close to the discharge side of the annular transfer tray 92, the piston rods of the several upper air cylinders 94 and the several lower air cylinders 95 contract again, the top block 97 contracts again into the through hole 910, and the upper surface of the top block 97 is flush with the upper surface of the annular transfer tray 92;

[0068] Under the blocking action of the baffle 133, the bottle caps 1 with the gaskets 10 formed on the inner side are moved to the second belt conveyor 132 through the guide groove 131, and are discharged from the discharge side of the annular transfer tray 92.

[0069] Although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0070] Therefore, the above description is only the preferred embodiment of the present application, and is not used to limit the scope of implementation of the present application; that is, all equivalent transformations made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A gasket forming device inside a bottle cap, characterized in that: It includes a rubber ball extrusion device, a hopper for storing bottle caps, and a feeding mechanism, a first transfer turntable, a heating component, a rubber ball adding mechanism, a second transfer turntable, and an extrusion molding mechanism arranged in sequence along the conveying direction of the bottle caps. The rubber ball extrusion device includes an extruder and an extrusion head fixedly connected to the discharge end of the extruder. The extrusion head can discharge rubber balls. The first transfer turntable, the heating component, the rubber ball adding mechanism, the second transfer turntable, and the extrusion molding mechanism perform rotary motions in opposite directions to each other; The feeding mechanism includes a vertical lifting and conveying mechanism and a chute. The chute is fixedly connected to one side of the upper end of the vertical lifting and conveying mechanism. The open ends of the bottle caps in the hopper face forward and are arranged one by one on the vertical lifting and conveying mechanism. Then, they are lifted to a certain height by the vertical lifting and conveying mechanism and moved into the chute, and are changed to have the open ends facing upward in the chute; The discharge end of the chute is close to but does not touch the feeding side of the first transfer turntable. The bottle caps fall one by one into the respective card slots on the outer periphery of the first transfer turntable at the feeding side of the first transfer turntable; The heating component includes an annular heating plate for heating the bottle caps. The bottle caps are moved one by one from the discharge side of the first transfer turntable to the annular heating plate and are arranged at equal intervals on the annular heating plate; The rubber ball adding mechanism includes a third transfer turntable and a rotating barrel that rotate synchronously and in the same direction, and a fixed annular guide rail. A number of vertical holes extending upward from the bottom surface to the upper part are respectively arranged along the circumferential direction of the rotating barrel. A number of vertical grooves in one-to-one communication with the number of vertical holes are respectively arranged along the circumferential direction on the outer wall of the rotating barrel. A vertical rod that can move up and down inside each vertical hole is arranged in each vertical hole. A first roller is installed on the outer wall of the vertical rod on the outer side of the corresponding vertical groove. The first roller rolls along the annular guide rail. The annular guide rail is provided with a V-shaped depression near the discharge side of the third transfer turntable. The extrusion head is located on the incoming side of the feeding side of the third transfer turntable; The heated bottle caps are moved one by one from the discharge side on the annular heating plate to the respective card slots of the third transfer turntable. The number of vertical rods rotate with the rotating barrel. When rotating above the extrusion head, they stick to rubber balls. When the first roller moves to the lowest point of the V-shaped depression, the corresponding vertical rod adds the rubber balls to the bottle caps below. The rubber balls adhere to the inner side surface of the bottle caps; The described extrusion forming mechanism includes an upper annular fixed seat, an annular transfer tray, and a lower annular fixed seat arranged in sequence from top to bottom. The upper annular fixed seat, the annular transfer tray, and the lower annular fixed seat rotate synchronously and in the same direction. A number of upper air cylinders and a number of lower air cylinders extending towards each other are respectively fixed along the circumferences of the upper annular fixed seat and the lower annular fixed seat. The end of the piston rod of each upper air cylinder is fixedly connected with a pressing block, and the end of the piston rod of each lower air cylinder is fixedly connected with a jacking block. The annular transfer tray is respectively provided with through holes for the piston rods of the lower air cylinders to pass through along the circumference; the bottle caps with glue balls adhered to the inner sides are sequentially moved one by one from the discharge side of the third transfer turntable to the respective card slots of the second transfer turntable, and then sequentially moved one by one from the feed side of the annular transfer tray onto the respective jacking blocks. During the rotation of the annular transfer tray, the corresponding upper air cylinders and lower air cylinders gradually extend towards each other, and the pressing blocks and the jacking blocks respectively press the glue balls on the inner sides of the bottle caps from the upper and lower sides. After cooling and curing, a thin and transparent gasket is formed on the inner side of the bottle cap, and then it is discharged from the discharge side of the annular transfer tray.

2. The inner gasket forming device for a bottle cap according to claim 1, wherein: The described vertical lifting and conveying mechanism includes a first belt conveyor arranged vertically and tilted backward. The hopper is fixedly connected to the bottom of the front side of the first belt conveyor, and the rear side of the hopper is open. A number of cross bars are fixedly connected to the conveyor belt of the first belt conveyor at intervals along its width direction; the bottle caps in the hopper have their open ends facing forward and are arranged sequentially one by one on the respective cross bars, and are lifted upward along with the cross bars where they are located as the first belt conveyor operates.

3. A gasket forming device inside a bottle cap according to claim 2, characterized in that: The width of each cross bar is half of the depth of the bottle cap, and the distance between adjacent cross bars is slightly larger than the outer diameter of the bottle cap.

4. A gasket forming device inside a bottle cap according to claim 2, characterized in that: The described chute is arranged to slope downward from its feed end to its discharge end, and includes a vertical section with an open end facing forward. The feed end of the vertical section is fixedly connected to one side of the upper end of the first belt conveyor, and the other end of the vertical section is twisted to form a horizontal section with an open end facing upward; a number of first air nozzle pipes facing the chute are respectively arranged on the front side of the upper end of the first belt conveyor. A number of second air nozzle pipes facing the discharge end are respectively arranged on the front side of the vertical section and the upper side of the horizontal section; under the blowing action of the number of first air nozzle pipes, the bottle caps are moved from the cross bars rising to the same height as the vertical section into the vertical section, and are arranged sequentially one by one with their open ends facing forward in the vertical section, and then moved into the horizontal section, turning into being arranged sequentially one by one with their open ends facing upward in the horizontal section, and under the blowing action of the number of second air nozzle pipes, they are moved towards the discharge end of the horizontal section.

5. A gasket forming device inside a bottle cap according to claim 1, characterized in that: The described glue ball adding mechanism further includes a first chassis and a number of brackets distributed along the circumference of the first chassis. The third transfer turntable and the rotating barrel are both rotatably installed on the first chassis, and the annular guide rail is fixedly connected between the number of brackets.

6. The forming device for the gasket inside the bottle cap according to claim 5, characterized in that: A circular horizontal baffle is fixedly connected above the circular guide rail between the several brackets, which limits the first roller from above to prevent the first roller from bouncing up and down during the rolling along the circular guide rail.

7. A gasket forming device inside a bottle cap according to claim 1, characterized in that: A semi-circular groove is provided at the bottom end of the vertical rod.

8. A gasket forming device inside a bottle cap according to claim 1, characterized in that: The extrusion forming mechanism further includes a second chassis. The upper circular fixing seat, the circular conveyor tray and the lower circular fixing seat are all rotatably installed on the second chassis. The bottom end of each lower air cylinder is equipped with a second roller that can roll along the second chassis.

9. A gasket forming device inside a bottle cap according to claim 1, characterized in that: A discharging mechanism is provided at the discharging side of the circular conveyor tray. The discharging mechanism includes a guide groove provided at the discharging side of the circular conveyor tray and a second belt conveyor arranged horizontally. The guide groove is inclined downward from its feeding end to the discharging end. The feeding end of the guide groove is fixedly connected with a baffle on the side far away from the discharging side of the circular conveyor tray. The baffle is arranged along the width direction of the circular conveyor tray. The bottle cap with a gasket formed on its inner side surface is moved to the second belt conveyor through the guide groove under the blocking action of the baffle.

10. A gasket forming device inside a bottle cap according to claim 1, characterized in that: Side baffles are provided along the moving path of the bottle cap on the outer sides of the first transfer turntable, the second transfer turntable and the third transfer turntable, as well as the inner and outer edges of the circular conveyor tray.

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