Automatic production equipment for bottle cap film

Abstract

The present invention relates to an automatic film-on-bottle-cap production equipment, which comprises a bottle cap sorting vibration plate, a conveyor belt, a plurality of positioning seats for positioning and placing bottle caps, one or more film cutting and fixing devices for receiving and fixing plastic films, and a film shaping device for hot-pressing and shaping the plastic films on the bottle caps, wherein the positioning seats are evenly distributed on the conveyor belt at equal intervals, the discharge port of the bottle cap sorting vibration plate leads to the top of the positioning seats, and each set of film cutting and shaping devices is provided with a set of the film shaping devices on the side facing the moving direction of the conveyor belt. This automatic film-on-bottle-cap production equipment arranges the bottle caps neatly through the bottle cap sorting vibration plate and then puts them into the positioning seats. When the positioning seats move to the bottom of the corresponding film cutting and shaping devices, the conveyor belt stops, the film cutting and shaping devices cut the plastic film into a circular shape and fix the circular plastic film to the bottom of the bottle cap by hot melting, and when the bottle caps fixed with the plastic film move to the corresponding film shaping device, the film shaping device heats the plastic film to a shape that matches the bottom of the bottle cap.

Description

Technical Field

[0001] The invention relates to packaging material production equipment, in particular to automatic bottle cap film production equipment. Background Art

[0002] At present, the body of some glue bottles is mainly composed of a paper tube (plastic film or aluminum-plastic composite film is provided on the inner wall of the paper tube), a diaphragm (plastic film or aluminum-plastic composite film) and a bottle cap. The bottle cap is disc-shaped, and the outer periphery of the bottle cap is provided with a flange, and a boss protruding downward is formed in the middle of the bottle cap. An opening is provided in the center of the boss, and a glue nozzle is integrally injection-molded on the opening, which protrudes upward, and the lower end of the glue nozzle clamps the upper and lower sides of the opening. The diaphragm is arranged at the bottom of the bottle cap, and the edge of the diaphragm and the flange of the bottle cap are bent and wrapped together on the outer periphery of the end of the paper tube, which can realize the fixation of the cover body and the paper tube on the one hand, and avoid the burrs on the edge of the cover body from scratching the hand on the other hand, thus realizing the combination of the bottle cap, the diaphragm and the paper tube. However, the combination of bottle caps and diaphragms is currently mainly assembled manually, which is inefficient. The specific assembly method is as follows: the rolled film material is punched out into a circular diaphragm of the size of the bottle cap by a cutting machine, and then the worker takes a bottle cap and puts it upside down on the tooling mold, then takes a piece of diaphragm and puts it on the bottom of the bottle cap, and then uses a hot pressing die to hot-press the diaphragm and the bottom surface of the nozzle to fix the diaphragm; finally, the hot pressing die is replaced and a hot pressing die is used to press on the diaphragm, so that the diaphragm has the contour shape of the bottom surface of the bottle cap. It can be seen that the above processing method is inefficient, occupies a lot of labor, and is costly. The main reasons for the above problems are: the rolled film material cannot be punched directly on the bottle cap after being released (the height between the flange of the bottle cap and the boss is about 5MM, and its height is too small. On the one hand, the punching head needs to avoid the boss, and on the other hand, the film material cannot be punched within this stroke). In addition, even if the film material is punched on the bottle cap, how to synchronously fix the punched film sheet and the bottle cap is also a technical difficulty (if the film sheet is not fixed at the same time, once the punching head leaves, it is easy to cause the film sheet to be blown away). Therefore, there is currently no equipment that can process the film material into a film sheet and assemble the film sheet and the bottle cap together. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic production equipment for film-coating of bottle caps with reasonable structure and high production efficiency, so as to overcome the shortcomings of the prior art.

[0004] The object of the present invention is achieved in that:

[0005] A bottle cap film automatic production equipment, characterized in that it comprises a bottle cap sorting vibration plate, a conveyor belt, a positioning seat for positioning and placing the bottle caps, a film cutting and fixing device for collecting, releasing and fixing plastic films (including pure plastic films, aluminum-plastic composite films, paper-plastic composite films and other film materials with plastic surfaces), and a film shaping device for hot-pressing and shaping the plastic films on the bottle caps. There are multiple positioning seats, and each positioning seat is evenly distributed on the conveyor belt at equal distances. The discharge port of the bottle cap sorting vibration plate leads to the top of the positioning seat. There are more than one set of film cutting and shaping devices, and each set of film cutting and shaping devices is provided with a set of the film shaping devices on the side facing the moving direction of the conveyor belt. The distance between the film cutting and shaping devices and the film shaping devices that are arranged in sequence and adjacent to each other along the moving direction of the conveyor belt is an integer multiple of the distance between two adjacent positioning seats.

[0006] The purpose of the present invention can also be solved by the following technical measures:

[0007] As a more specific solution, the film cutting and fixing device and the film shaping device are each provided with N sets, and the distance between the film cutting and fixing devices and the film shaping devices which are arranged in sequence and adjacent to each other along the moving direction of the conveyor belt is N times the distance between the two positioning seats, and the distance between the film shaping devices and the film cutting and fixing devices which are arranged in sequence and adjacent to each other along the moving direction of the conveyor belt is equal to the distance between the two adjacent positioning seats; and N is an integer greater than 2.

[0008] As a further solution, the discharge port of the bottle cap sorting vibration plate is connected to a downward inclined slide, the lower end of the slide is located above the positioning seat, and the lower end of the slide is also provided with an elastic pressing sheet, and the bottle caps are output at the bottom of the elastic pressing sheet.

[0009] As a further solution, an electromagnetic push rod is also provided at the lower end of the slideway for preventing the bottle cap from sliding down; a detection probe for detecting the bottle cap is provided next to the elastic pressing sheet. The electromagnetic push rod is a product of the prior art, and its specific structural principle is not described in detail here; its general principle is that by energizing the coil of the electromagnetic push rod to generate a magnetic field, the push rod can move, for example, by energizing, the push rod can be extended, and when the power is off, the push rod is reset by a spring. Therefore, according to this principle, the extension or retraction of the push rod can be used to block or release the bottle cap. The detection probe is used to detect whether the bottle cap falls correctly on the positioning seat.

[0010] As a further solution, the film cutting and fixing device includes a floating platform assembly, a film material retracting and releasing mechanism, a film pressing mechanism, a film cutting mechanism and a hot film pressing mechanism; the floating platform assembly includes a frame, a platform and a compression spring, the platform is located above the conveyor belt and the positioning seat, the platform is provided with a clearance hole corresponding to the positioning seat, and the bottom of the platform is connected to the frame through a compression spring; the film material retracting and releasing mechanism includes an unwinding turntable, an unwinding guide roller, a winding turntable and a winding guide roller, the unwinding turntable and the winding turntable are distributed on the left and right sides of the platform, the unwinding guide roller is arranged between the unwinding turntable and the platform, and the winding guide roller is arranged between the winding turntable and the platform; the film pressing mechanism, the film cutting mechanism and the hot film pressing mechanism are arranged above the platform.

[0011] As a further solution, the film pressing mechanism includes a gantry and a film pressing cylinder, the gantry is connected to the frame, the film pressing cylinder is arranged on the top of the gantry, the piston rod of the film pressing cylinder is connected to the film cutting mechanism, and the hot film pressing mechanism is arranged on the film cutting mechanism.

[0012] As a further solution, the film cutting mechanism includes a frame, a film cutting motor, a film cutting head and a pressure plate. The frame is connected to the piston rod of the film pressing cylinder, the pressure plate is arranged at the bottom of the frame, the film cutting head is rotatably arranged on the frame, the lower end of the film cutting head passes through the bottom of the pressure plate, and a blade is also arranged at the bottom of the film cutting head. The film cutting motor is arranged on the frame and is transmission connected to the film cutting head; the hot pressing film mechanism includes a first hot pressing cylinder and a central hot pressing die head. The first hot pressing cylinder is arranged on the frame, and the film cutting head is provided with a center hole corresponding to the central hot pressing die head. The upper end of the central hot pressing die head is transmission connected to the first hot pressing cylinder, and the lower end of the central hot pressing die head is inserted into the center hole.

[0013] As a further solution, the film shaping device includes a cylinder support, a second hot-pressing cylinder and a hot-pressing shaping die head, the cylinder support is connected to the frame and crosses over the conveyor belt, the second hot-pressing cylinder is arranged between the cylinders and is transmission-connected to the hot-pressing shaping die head, the hot-pressing shaping die head moves up and down under the drive of the second hot-pressing cylinder, and the lower end of the hot-pressing shaping die head is provided with a concave surface. When the hot-pressing shaping die head heats the plastic film, the plastic film is deformed by heat and pressure, and when the hot-pressing shaping die head leaves the plastic film, the plastic film is cooled and shaped, thereby forming a shape that conforms to the bottom surface of the bottle cap.

[0014] As a further solution, the bottle cap is disc-shaped, with a flange provided on the outer periphery of the bottle cap, and a downwardly protruding boss is formed in the middle of the bottle cap, with an opening provided in the center of the boss, and a glue nozzle is integrally injection-molded on the opening, the glue nozzle protrudes upward, and the lower end of the glue nozzle clamps the upper and lower sides of the opening, and a concave cavity is provided in the glue nozzle, one end of which leads to the lower end of the glue nozzle.

[0015] As a further solution, the conveyor belt rotates on a vertical plane, and a positioning groove is provided on the top surface of the positioning seat corresponding to the nozzle of the bottle cap, and the top of the positioning groove is open toward the traveling direction of the conveyor belt.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) This automatic film-coating production equipment for bottle caps arranges the bottle caps neatly through a bottle cap sorting vibration plate and then puts them into a positioning seat. When the positioning seat moves to the bottom of the corresponding film cutting and fixing device under the action of the conveyor belt, the conveyor belt stops, and the film cutting and fixing device cuts the plastic film into a circular shape and fixes the circular plastic film to the bottom of the bottle cap by hot melting. When the bottle cap fixed with the plastic film moves to the corresponding film fixing device, the film fixing device heats the plastic film to a shape that matches the bottom of the bottle cap;

[0018] (2) This automatic production equipment for bottle cap film is equipped with more than two sets of film cutting and film setting devices and film shaping devices. Combined with the design of each running stroke of the conveyor belt, the production capacity on the same conveyor belt can be increased;

[0019] (3) The conveyor belt of this automatic production equipment for bottle cap filming rotates on a vertical plane. When the positioning seat is driven by the conveyor belt to an inverted state, the bottle caps on the positioning seat automatically fall down. On the one hand, it can realize the collection of finished bottle caps, and on the other hand, it can make the positioning seat ready for the next bottle cap loading;

[0020] (4) The film cutting and fixing device of this automatic film production equipment for bottle caps can cut out a circular plastic film by controlling the rotation of the film cutting head to avoid the process limitations of punching. At the same time, the central hot pressing die head at the center of the film cutting head is pressed down on the plastic film, causing a hot melt reaction on the surface of the plastic film, thereby achieving hot melt bonding between the plastic film and the bottle cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0022] Figure 2 for Figure 1 Enlarged structural diagram at A in the middle.

[0023] Figure 3 It is a schematic diagram of the connection structure between the film cutting and fixing device, the positioning seat and the conveyor belt in the present invention.

[0024] Figure 4 for Figure 3 Schematic diagram of the partially enlarged structure.

[0025] Figure 5 for Figure 4 Enlarged structural diagram at G in the middle.

[0026] Figure 6 It is a schematic diagram of the top view structure of the positioning seat in the present invention.

[0027] Figure 7 for Figure 3 Schematic diagram of another working state structure.

[0028] Figure 8 for Figure 7 Enlarged structural diagram at H in the middle.

[0029] Fig. 9 This is a comparison diagram of the plastic film before and after cutting in the present invention.

[0030] Fig.10 It is a schematic diagram of the connection structure between the film shaping device, the positioning seat and the conveyor belt in the present invention.

[0031] Fig.11 This is a schematic diagram of the structure of the bottle cap at an angle in the present invention.

[0032] Fig.12 for Fig.11 Schematic diagram of the structure from another angle.

[0033] Fig.13 It is a schematic diagram of the structure after the bottle cap and the plastic film are fixed in the present invention.

[0034] Fig.14 for Fig.13 Schematic diagram of the structure of the plastic film after deformation. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0036] See also Figures 1 to 14 As shown, an automatic production equipment for filming bottle caps includes a bottle cap sorting vibration plate 10, a conveyor belt 90, a positioning seat 40 for positioning and holding the bottle caps 100, a film cutting and fixing device for collecting, releasing and fixing the plastic film 160, and a film shaping device for hot pressing and shaping the plastic film 160 on the bottle caps 100. There are multiple positioning seats 40, and each positioning seat 40 is evenly distributed on the conveyor belt 90 at an equal distance. The discharge port of the bottle cap 100 sorting vibration plate 10 leads to the top of the positioning seat 40. There are more than one set of film cutting and shaping devices, and each set of film cutting and shaping devices is provided with a set of the film shaping devices on the side facing the moving direction of the conveyor belt 90. The distance between the film cutting and shaping devices and the film shaping devices that are arranged in sequence and adjacent to each other along the moving direction of the conveyor belt 90 is an integer multiple of the distance d between two adjacent positioning seats 40.

[0037] The film cutting and fixing device and the film shaping device are each provided with two sets, and the distance between the film cutting and fixing device and the film shaping device that are sequentially arranged and adjacent along the moving direction of the conveyor belt 90 is N times the distance d between the two positioning seats 40, and the distance between the film shaping device and the film cutting and fixing device that are sequentially arranged and adjacent along the moving direction of the conveyor belt 90 is equal to the distance between the two adjacent positioning seats 40. In this embodiment, the film cutting and fixing device and the film shaping device are each provided with two sets, that is, N is 2, and the two sets of film cutting and fixing devices are respectively the first film cutting and fixing device 50 and the second film cutting and fixing device 70, and the two sets of film shaping devices are respectively the first film shaping device 60 and the second film shaping device 80.

[0038] The discharge port of the bottle cap 100 sorting vibration plate 10 is connected to a downwardly inclined slide 101, the lower end of the slide 101 is located above the positioning seat 40, and an elastic pressing sheet 130 is also provided at the lower end of the slide 101, and the bottle cap 100 is output at the bottom of the elastic pressing sheet 130.

[0039] An electromagnetic push rod 20 for preventing the bottle cap 100 from sliding down is also disposed at the lower end of the slideway 101 ; a detection probe 30 for detecting the bottle cap 100 is disposed next to the elastic pressing sheet 130 .

[0040] The film cutting and fixing device includes a floating platform assembly, a film material retracting and releasing mechanism, a film pressing mechanism, a film cutting mechanism and a hot film pressing mechanism; the floating platform assembly includes a frame 120, a platform 8 and a compression spring 82, the platform 8 is located above the conveyor belt 90 and the positioning seat 40, the platform 8 is provided with a clearance hole 81 corresponding to the positioning seat 40, and the bottom of the platform 8 is connected to the frame 120 through a compression spring 82; the film material retracting and releasing mechanism includes an unwinding turntable 140, an unwinding guide roller 1401, a winding turntable 150 and a winding guide roller 1501, the unwinding turntable 140 and the winding turntable 150 are distributed on the left and right sides of the platform 8, the unwinding guide roller 1401 is arranged between the unwinding turntable 140 and the platform 8, and the winding guide roller 1501 is arranged between the winding turntable 150 and the platform 8; the film pressing mechanism, the film cutting mechanism and the hot film pressing mechanism are arranged above the platform 8.

[0041] The film pressing mechanism includes a gantry 2 and a film pressing cylinder 1. The gantry 2 is connected to the frame 120. The film pressing cylinder 1 is arranged on the top of the gantry 2. The piston rod of the film pressing cylinder 1 is connected to the film cutting mechanism. The hot film pressing mechanism is arranged on the film cutting mechanism.

[0042] The film cutting mechanism includes a frame, a film cutting motor 5, a film cutting head 7 and a pressing plate 35. The frame is connected to the piston rod of the film pressing cylinder 1. The pressing plate 35 is arranged at the bottom of the frame. The film cutting head 7 is rotatably arranged on the frame. The lower end of the film cutting head 7 passes through the bottom of the pressing plate 35. A blade 71 is also arranged at the bottom of the film cutting head 7. The film cutting motor 5 is arranged on the frame and is transmission-connected to the film cutting head 7. The hot pressing film mechanism includes a first hot pressing cylinder 4 and a central hot pressing die 6. The first hot pressing cylinder 4 is arranged on the frame. The film cutting head 7 is provided with a center hole corresponding to the central hot pressing die 6. The upper end of the central hot pressing die 6 is transmission-connected to the first hot pressing cylinder 4, and the lower end of the central hot pressing die 6 is inserted into the center hole.

[0043] The frame includes a top plate 3, a connecting rod 31 and a bottom plate 33. The top plate 3 is connected to the piston rod of the film pressing cylinder 1. The connecting rod 31 is connected between the top plate 3 and the bottom plate 33. The pressing plate 35 is arranged at the bottom of the bottom plate 33. The bottom plate 33 is connected to the film cutting head 7 through a bearing 34. The film cutting motor 5 is arranged on the bottom plate 33 and is connected to the film cutting head 7 through a synchronous belt transmission mechanism (including a prime mover pulley, a synchronous belt 51 and a driven pulley 52).

[0044] The first hot pressing cylinder 4 is arranged at the bottom of the top plate 3 .

[0045] The bottom plate 33 is provided with a guide sleeve 32 , the gantry 2 is provided with a vertical guide rod 21 , the guide sleeve 32 is sleeved outside the guide rod 21 and linearly slides with the guide rod 21 .

[0046] The unwinding turntable 140 is connected to the frame 120 via a clutch, and the winding turntable 150 is drivingly connected to the winding motor.

[0047] The film shaping device includes a cylinder support 92, a second hot-pressing cylinder 91 and a hot-pressing shaping die 9. The cylinder support 92 is connected to the frame 120 and spans over the conveyor belt 90. The second hot-pressing cylinder 91 is arranged between the cylinders and is transmission-connected to the hot-pressing shaping die 9. The hot-pressing shaping die 9 moves up and down under the drive of the second hot-pressing cylinder 91. A concave surface 93 is provided at the lower end of the hot-pressing shaping die 9.

[0048] The bottle cap 100 is disc-shaped, and a flange 1001 is provided on the outer periphery of the bottle cap 100, and a downwardly protruding boss 1003 is formed in the middle of the bottle cap 100, and an opening is provided at the center of the boss 1003, and a nozzle 1002 is integrally injection-molded on the opening, and the nozzle 1002 protrudes upward, and the lower end of the nozzle 1002 clamps the upper and lower sides of the opening, and a concave cavity is provided in the nozzle 1002, and one end of the concave cavity leads to the lower end of the nozzle 1002.

[0049] The conveyor belt 90 rotates on a vertical plane, and a positioning groove 401 is provided on the top surface of the positioning seat 40 corresponding to the nozzle 1002 of the bottle cap 100. The top of the positioning groove 401 is open toward the running direction of the conveyor belt, so that the nozzle of the bottle cap can be inserted into the positioning groove. The conveyor belt 90 is set on the frame 120, and a receiving hopper 110 is provided below the tail of the conveyor belt 90.

[0050] Its working principle is: See Figure 1 and Figure 2 As shown, the bottle caps 100 are placed in the bottle cap sorting vibration plate 10, and the bottle cap sorting vibration plate 10 vibrates to vibrate the bottle caps 100 to a specific track. The bottle caps 100 that fit the track shape remain on the track and are transported to the slide 101 (the bottle caps 100 in the slide 101 slide in the direction of the arrow F), and then the bottle caps in the slide 101 are released by the electromagnetic push rod 20 (the push rod of the electromagnetic push rod 20 moves in the direction of the arrow E). By setting the frequency of the electromagnetic push rod 20, the positioning seat 40 can load the bottle caps 100 when it passes the lower end of the slide 101. When the equipment operates normally, the first film cutting and fixing device 50, the second film cutting and fixing device 70, the first film shaping device 60 and the second film shaping device 80 simultaneously process the bottle caps 100 on their workstations. The conveyor belt 90 is moved along Figure 1 The conveyor belt 90 rotates in the direction of arrow C, and the distance traveled each time is 2d, so that the positioning seat 40 and the bottle cap 100 located at the first film cutting and fixing device 50 can move to the bottom of the first film shaping device 60 along the direction of arrow a, and the positioning seat 40 located at the first film cutting and fixing device 50 and the first film shaping device 60 can move to the bottom of the second film cutting and fixing device 70 along the direction of arrow b, and the positioning seat 40 and the bottle cap 100 originally located under the second film cutting and fixing device 70 can be moved to the second film shaping device 80 for processing, so the bottle caps 100 after the second film shaping device 80 are all finished products. When the positioning seat 40 carrying the finished product is driven to an inverted state by the conveyor belt 90, the bottle cap 100 on the positioning seat 40 will fall into the receiving hopper 110 along the direction of arrow D.

[0051] The film cutting and fixing device works as follows: the unwinding turntable 140 is used to place the intact rolled plastic film, the plastic film 160 released by the unwinding turntable 140 is placed on the support platform 8, and the cut plastic film is wound on the winding turntable 150; Figure 7 As shown, the film pressing cylinder 1 is started, and the piston rod of the film pressing cylinder 1 extends, so that the film cutting mechanism and the hot film pressing mechanism move downward as a whole (see Figure 7As shown by the arrow I in the figure, the pressing plate 35 of the film cutting mechanism presses the support platform 8 and the plastic film 160 on the support platform 8 downward, the compression spring 82 is compressed, and the plastic film 160 is clamped and fixed between the pressing plate 35 and the support platform 8, and the plastic film 160 is close to the lower end 1004 of the nozzle 1002 of the bottle cap 100. Then, the first hot pressing cylinder 4 is started to push the central hot pressing die head 6 downward along the direction of the arrow J, and the central hot pressing die head 6 presses the plastic film 160 on the lower end 1004 of the nozzle 1002, so that the plastic film 160 and the lower end 1004 of the nozzle 1002 are hot-melt connected, as shown in FIG. Fig.13 As shown at L in the middle; during the hot pressing process, the film cutting motor 5 is started, driving the film cutting head 7 along Figure 7 and Figure 8 The blade 71 rotates in the direction of the arrow K, and the middle of the formed plastic film is cut into a circular plastic film 160 fixed to the bottle cap 100. Then, each mechanism is reset, and the conveyor belt 90 delivers the bottle cap with the plastic film to the film shaping device (the formed plastic film is shown in FIG. Fig.14 At the same time, the clutch of the unwinding turntable 140 is unlocked, and the rewinding turntable 150 and the rewinding motor are started, so that the cut plastic film (see Fig. 9 As shown, the plastic film 160 changes from a complete strip to a strip with round holes 1601 wound on the winding turntable 150, and a new long plastic film enters above the support platform 8, waiting for the next work.

Claims

1. An automatic production equipment for bottle cap filming, characterized in that: It includes a bottle cap sorting vibration plate, a conveyor belt, a positioning seat for positioning and placing bottle caps, a film cutting and fixing device for collecting, releasing and fixing plastic films, and a film shaping device for hot pressing and shaping the plastic films on the bottle caps. There are multiple positioning seats, and each positioning seat is evenly distributed on the conveyor belt at equal distances. The discharge port of the bottle cap sorting vibration plate leads to the top of the positioning seat. There are more than one set of film cutting and fixing devices, and each set of film cutting and fixing devices is provided with a set of the film shaping device on the side facing the moving direction of the conveyor belt. The distance between the film cutting and fixing devices and the film shaping devices that are arranged in sequence and adjacent to each other along the moving direction of the conveyor belt is an integer multiple of the distance between two adjacent positioning seats. The film cutting and fixing device comprises a floating support assembly, a film material retracting and releasing mechanism, a film pressing mechanism, a film cutting mechanism and a hot film pressing mechanism; the floating support assembly comprises a frame, a support and a compression spring, the support is located above the conveyor belt and the positioning seat, the support is provided with a clearance hole corresponding to the positioning seat, and the bottom of the support is connected to the frame through a compression spring; the film material retracting and releasing mechanism comprises an unwinding turntable, an unwinding guide roller, a winding turntable and a winding guide roller, the unwinding turntable and the winding turntable are distributed on the left and right sides of the support, the unwinding guide roller is arranged between the unwinding turntable and the support, and the winding guide roller is arranged between the winding turntable and the support; the film pressing mechanism, the film cutting mechanism and the hot film pressing mechanism are arranged above the support; The film pressing mechanism comprises a gantry and a film pressing cylinder, the gantry is connected to the frame, the film pressing cylinder is arranged on the top of the gantry, the piston rod of the film pressing cylinder is connected to the film cutting mechanism, and the hot film pressing mechanism is arranged on the film cutting mechanism; The film cutting mechanism comprises a frame, a film cutting motor, a film cutting head and a pressing plate. The frame is connected to the piston rod of the film pressing cylinder. The pressing plate is arranged at the bottom of the frame. The film cutting head is rotatably arranged on the frame. The lower end of the film cutting head passes through the bottom of the pressing plate. A blade is also arranged at the bottom of the film cutting head. The film cutting motor is arranged on the frame and is transmission-connected with the film cutting head. The hot pressing film mechanism comprises a first hot pressing cylinder and a central hot pressing die head. The first hot pressing cylinder is arranged on the frame. The film cutting head is provided with a central hole corresponding to the central hot pressing die head. The upper end of the central hot pressing die head is transmission-connected with the first hot pressing cylinder. The lower end of the central hot pressing die head is inserted into the central hole. The film shaping device comprises a cylinder support, a second hot-pressing cylinder and a hot-pressing shaping die head, wherein the cylinder support is connected to the frame and crosses over the conveyor belt, the second hot-pressing cylinder is arranged between the cylinders and is drivingly connected to the hot-pressing shaping die head, the hot-pressing shaping die head moves up and down under the drive of the second hot-pressing cylinder, and the lower end of the hot-pressing shaping die head is provided with a concave surface; The bottle cap is disc-shaped, with a flange on its outer periphery, and a boss protruding downward is formed in the middle of the bottle cap, an opening is provided in the center of the boss, a nozzle is integrally injection-molded on the opening, the nozzle protrudes upward, the lower end of the nozzle clamps the upper and lower sides of the opening, a concave cavity is provided in the nozzle, and one end of the concave cavity leads to the lower end of the nozzle.

2. The automatic production equipment for film-coating of bottle caps according to claim 1 is characterized in that: The film cutting and fixing device and the film shaping device are each provided with N sets, and the distance between the film cutting and fixing devices and the film shaping devices which are arranged in sequence and adjacent to each other along the moving direction of the conveyor belt is N times the distance between the two positioning seats, and the distance between the film shaping devices and the film cutting and fixing devices which are arranged in sequence and adjacent to each other along the moving direction of the conveyor belt is equal to the distance between the two adjacent positioning seats; and N is an integer greater than 2.

3. The automatic production equipment for film-coating of bottle caps according to claim 1 is characterized in that: The discharge port of the bottle cap sorting vibration plate is connected with a downwardly inclined slideway, the lower end of the slideway is located above the positioning seat, and the lower end of the slideway is also provided with an elastic pressing sheet, and the bottle caps are output at the bottom of the elastic pressing sheet.

4. The automatic production equipment for film-coating of bottle caps according to claim 3 is characterized in that: An electromagnetic push rod for preventing the bottle cap from sliding down is also provided at the lower end of the slideway; and a detection probe for detecting the bottle cap is provided next to the elastic pressing sheet.

5. The automatic production equipment for film-coating of bottle caps according to claim 1 is characterized in that: The conveyor belt rotates on a vertical plane, and a positioning groove is provided on the top surface of the positioning seat corresponding to the nozzle of the bottle cap, and the top of the positioning groove is open toward the running direction of the conveyor belt.

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