Automatic assembly device and method for inner cap and outer cap of sauce bottle cap

Abstract

The invention relates to the technical field of bottle cap assembling, and provides a sauce bottle cap inner and outer cap automatic assembling device and method.The sauce bottle cap inner and outer cap automatic assembling device comprises an equipment rack, a feeding rack is arranged on one side of the equipment rack, and the sauce bottle cap inner and outer cap automatic assembling device comprises a punching rack, an unwinding assembly, a crimping assembly, a continuous punching assembly and a feeding assembly; the continuous punching assembly is installed on the punching rack, the feeding assembly is installed on the punching rack, the punching rack is fixedly installed in the equipment rack, the unwinding assembly is installed on the discharging rack, the crimping assembly is installed on the discharging rack, the continuous punching assembly is installed on the punching rack, and the feeding assembly is installed on the punching rack. The problems that the product quality is affected, the rejection rate and the rework rate are increased, and the sealing performance and the fresh-keeping effect of products are affected due to the fact that production parameters are changed in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of bottle cap assembly, and in particular to a device and method for automatically assembling inner and outer covers of a sauce bottle cap. Background Art

[0002] With the continuous development of automation technology, the market demand for automatic assembly devices for inner and outer caps of bottle caps continues to grow, especially in the food and cosmetics industries, which have higher requirements for efficient and hygienic production methods. When assembling sauce bottle caps, automatic assembly devices can be used to assemble the outer cap, inner cap and soft aluminum film of the sauce bottle caps.

[0003] Among them, the soft aluminum film is usually located under the inner cover, which plays a role of further sealing and preservation. Before the first use, the soft aluminum film can effectively prevent the leakage and deterioration of the material in the container. When the user needs to use it, the soft aluminum film needs to be torn off first. The soft aluminum film has good barrier properties and can prevent air, moisture and bacteria from entering the container.

[0004] When installing soft aluminum film in the bottle cap, multiple rolls of aluminum film are needed. In the process of replacing the aluminum film rolls, it is often necessary to suspend the operation of the device first, and then continue to work after the aluminum film is replaced. In the process of replacing the aluminum film rolls, suspending the operation of the device often leads to a decrease in production efficiency, especially in large-scale production. Frequent shutdowns to replace aluminum film rolls will significantly affect the continuity and production capacity of the production line. When the equipment is shut down to replace the aluminum film rolls, restarting the equipment will also cause changes in production parameters (such as temperature, pressure, speed, etc.), affecting product quality, and ultimately reducing the product qualification rate, increasing the scrap rate and rework rate, affecting the product's sealing and preservation effects, especially in the food industry, it is easy to cause product deterioration or contamination. Summary of the invention

[0005] The present invention proposes an automatic assembly device and method for inner and outer covers of a sauce bottle cap, which solves the problem in the prior art that the device needs to be stopped when replacing an aluminum film roll, causing changes in production parameters, affecting product quality, increasing the scrap rate and rework rate, and affecting the sealing and preservation effects of the product.

[0006] The technical solution of the present invention is as follows:

[0007] An automatic assembly device for inner and outer covers of a sauce bottle cap comprises an equipment frame, a material placing frame is arranged on one side of the equipment frame, and comprises:

[0008] A stamping machine frame, wherein the stamping machine frame is fixedly installed inside the equipment frame;

[0009] An unwinding assembly, which is mounted on the unwinding frame and is used to place a soft aluminum film roll;

[0010] A crimping assembly is installed on the unwinding frame and is used to replace the soft aluminum film roll during the working process and send it to the working position;

[0011] A continuous stamping assembly, which is mounted on the stamping frame and is used to stamp the soft aluminum film into the bottle cap;

[0012] A feeding assembly is installed on the punching machine frame and is used for loading and unloading bottle caps.

[0013] On the basis of the above scheme, the unwinding assembly comprises:

[0014] A fixed frame, two of which are symmetrically and rotatably mounted on one side of the unloading frame away from the equipment frame;

[0015] A mounting frame, the mounting frames are detachably mounted on the ends of the two fixing frames;

[0016] A first motor, two of which are fixedly mounted on the unloading frame, and the output ends of the two first motors are fixedly connected to the two fixing frames respectively;

[0017] A guide conveying part is installed on the unloading frame and is used for guiding the soft aluminum film.

[0018] On the basis of the above scheme, the guide conveying part comprises:

[0019] Guide rollers, two of which are rotatably and symmetrically mounted on the unloading frame;

[0020] An arc-shaped guide frame, wherein the arc-shaped guide frame is fixedly mounted on the unloading frame, and the tail of the arc-shaped guide frame is fixedly mounted inside the equipment frame;

[0021] Wherein, the arc-shaped guide frame includes a straight section and an arc-shaped section, the straight section is located inside the equipment frame, the arc-shaped section is located between the equipment frame and the unloading frame, and the opening direction of the arc-shaped section faces upward;

[0022] A material pressing frame is rotatably mounted on the arc segment, and a free end of the material pressing frame abuts against an upper side of the arc segment.

[0023] In addition to the above solutions, it also includes:

[0024] A conveyor frame, the conveyor frame is fixedly mounted on the discharge end of the equipment frame;

[0025] Feed rollers, two of which are symmetrically and rotatably mounted on the conveyor frame;

[0026] A second motor is fixedly mounted on the conveyor frame, and an output end of the second motor is fixedly connected to the feeding roller.

[0027] On the basis of the above scheme, the crimping assembly includes an ultrasonic welding machine, which is fixedly mounted on the unloading frame, and further includes:

[0028] A first electric cylinder, which is fixedly mounted on the unloading frame and is located at the lower part of the ultrasonic welding machine;

[0029] A welding frame, the output end of the first electric cylinder and the lower part of the ultrasonic welding machine are both fixedly mounted with the welding frame, and the two welding frames are symmetrically arranged;

[0030] A welding plate, which is fixedly mounted on the welding frame at the bottom of the ultrasonic welding machine, and is fixedly connected to the working end of the ultrasonic welding machine;

[0031] A welding plate, which is fixedly mounted on the welding frame at the output end of the first electric cylinder;

[0032] A positioning part, two of which are symmetrically mounted on the welding plate and the receiving plate;

[0033] The positioning part is installed at both ends of each of the adjustment parts and is used to fix the soft aluminum film. The adjustment part is used to adjust the position of the positioning part.

[0034] On the basis of the above scheme, the position adjustment unit includes:

[0035] Position adjustment frames, the welding plate and the welding support plate are symmetrically and slidably mounted with two position adjustment frames;

[0036] The second electric cylinders are symmetrically and fixedly mounted on the two welding frames, and the output ends of the second electric cylinders are fixedly connected to the positioning frame.

[0037] On the basis of the above solution, the positioning part includes:

[0038] Arc grooves, two arc grooves are symmetrically provided on the two welding frames, and the edges of the arc grooves smoothly transition with the welding frames;

[0039] Arc-shaped pressure strips, both ends of each of the adjustment frames are symmetrically and slidably mounted with the arc-shaped pressure strips;

[0040] The third electric cylinder is symmetrically and fixedly mounted on both ends of each of the positioning frames, and the output end of the third electric cylinder is fixedly connected to the arc-shaped pressure strip.

[0041] On the basis of the above scheme, the continuous stamping assembly comprises:

[0042] A positioning frame, the positioning frame is fixedly mounted on the punching machine frame, and the positioning frame is located at the upper part of the straight section;

[0043] A bearing frame, the bearing frame is arranged on the upper part of the positioning frame;

[0044] A fourth electric cylinder, two of which are fixedly mounted on the inner bottom wall of the equipment frame, and the output ends of the two fourth electric cylinders are respectively fixedly connected to the two ends of the bottom of the supporting frame;

[0045] A fifth electric cylinder, wherein the fifth electric cylinder is fixedly mounted inside the carrying frame;

[0046] A connecting frame, on which the output end of the fifth electric cylinder is fixedly mounted;

[0047] Punching rods, three of which are fixedly mounted on the connecting frame at equal distances;

[0048] Punching holes: three punching holes are provided on the positioning frame and the arc-shaped guide frame, and the punching holes correspond to the punching rods.

[0049] On the basis of the above scheme, the feeding assembly comprises:

[0050] A mounting plate, the mounting plate being fixedly mounted on the punching machine frame;

[0051] A feeding tray, the feeding tray being rotatably mounted on the mounting tray;

[0052] The feeding tray is provided with a plurality of groups of the feeding grooves at equal angles in a circular shape, and each group of the feeding grooves is provided with three feeding grooves, and the feeding grooves are adapted to the punching rod;

[0053] A third motor, the third motor is fixedly mounted on the stamping machine frame, and an output end of the third motor is fixedly connected to the feeding tray;

[0054] A material discharge trough, the mounting plate is provided with the material discharge trough;

[0055] A discharge rack is installed on the punching machine frame and is located at the bottom of the feed chute.

[0056] A method for automatically assembling inner and outer covers of a sauce bottle cap, using the above-mentioned automatic assembly device for inner and outer covers of a sauce bottle cap, comprises the following steps:

[0057] The first step is injection molding of the outer cover, using a horizontal injection molding machine to perform injection molding to form the outer cover;

[0058] The second step is to sort the caps. The outer caps after injection molding are transported to three vibration plates through the conveyor track for sorting.

[0059] The fourth step is feeding, which is transmitted from the vibration plate to the feeding track. There are also 3 feeding tracks. A mobile feeding channel is set in the middle of the feeding track. A sensor is set on each feeding track. When the outer covers on the feeding track are arranged to reach the sensor position, the number of outer covers on the feeding track reaches a predetermined number, and the mobile feeding channel moves to the corresponding feeding track, so that the outer covers reaching the predetermined number move forward through the mobile feeding channel until they move to the cover closing mechanism.

[0060] The fifth step is to close the cover. A plurality of fixed jaws are arranged on the outer peripheral side of the turntable to fix the outer cover. A cover closing block is also arranged on the outer peripheral side of the turntable. The outer cover passes through the cover closing block under the drive of the turntable to close the outer cover. The closed outer cover is transported to the inner and outer cover assembly mechanism.

[0061] The sixth step is assembly. In the inner and outer cover assembly mechanism, the soft cover and the soft cover bracket are first assembled together, and the two assembled together are taken out and moved upward. The pressure rod is pressed down again to press the soft cover bracket and the soft cover into the closed outer cover to complete the assembly of the inner and outer covers. The assembled covers are transported to the soft aluminum film assembly mechanism.

[0062] The seventh step is feeding, through the feeding equipment, the bottle caps are fed into a group of feeding troughs side by side, that is, three bottle caps are fed into the corresponding feeding troughs at the same time, and then the third motor is started to drive the feeding plate to rotate intermittently in the installation plate. Each time it rotates, three bottle caps will enter the feeding troughs at the corresponding positions, and each time it stops, three bottle caps will enter the lower part of the positioning frame. The three bottle caps in this area correspond to the three punching holes on the positioning frame respectively, and can be punched and installed;

[0063] Step 8: Stamping. Start the fourth electric cylinder to drive the carrier frame to rise, align the punching rod with the punching hole, then retract the fourth electric cylinder so that the punching rod enters the punching hole, and then start the fifth electric cylinder to push the connecting frame to drive the punching rod to press down, punch the aluminum film into the bottle cap, and ensure that the aluminum film and the bottle cap are tightly combined. After the stamping is completed, the carrier frame is pushed up by the fourth electric cylinder, and the fifth electric cylinder is retracted at the same time. At this time, the punching rod is separated from the punching hole, completing a stamping cycle;

[0064] The ninth step is to load the aluminum film. The first motor is started synchronously to drive the fixed frame and the mounting frame to rotate, so that the aluminum film on the corresponding aluminum film roll is moved out. At the same time, the second motor is started, and the second motor drives one of the feeding rollers to rotate, thereby driving the aluminum film to move with the cooperation of the other feeding roller.

[0065] Step 10: Replace the aluminum film. Without stopping the Azhuang aluminum film, connect the new and old sections of aluminum film through the cooperation of the second and third electric cylinders at ABCD.

[0066] The eleventh step is unloading. The bottle caps with the aluminum film installed will fall into the discharge rack as the feed tray rotates when passing through the unloading chute. By setting a discharge device in the discharge rack, the bottle caps with the aluminum film installed can be sent to the next link to complete the bottle cap assembly.

[0067] The working principle and beneficial effects of the present invention are:

[0068] 1. In the present invention, through the cooperation of the arc-shaped pressure strip and the arc-shaped groove, the edge of the arc-shaped groove and the welding frame are smoothly transitioned, thereby preventing the aluminum film from being bent, ensuring the flatness and welding quality of the aluminum film, and making the docking and welding of the aluminum film more efficient and accurate.

[0069] 2. In the present invention, by cooperating with the second electric cylinder and the third electric cylinder at four points ABCD, the aluminum film can be quickly replaced without stopping the installation process of the aluminum film and the bottle cap, while ensuring the neatness and tightness of the docking of the two sections of aluminum film, thereby ensuring the stability of the production process and the consistency of product quality.

[0070] 3. In the present invention, the continuity of the bottle cap assembly is improved through the cooperation of the continuous stamping component and the feeding component. The crimping component is set in four areas, and the second electric cylinder and the third electric cylinder in the four areas cooperate with each other. The aluminum film can be docked without stopping the installation, and the accuracy of the docking is improved. The unwinding component is set to facilitate the replacement of the used aluminum film, and space is reserved for the docking of the old and new aluminum films, which further reduces the impact on the installation during the replacement of the aluminum film. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0072] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0073] Figure 2 It is a schematic diagram of a three-dimensional structure in cross section in the present invention;

[0074] Figure 3 It is a schematic diagram of the structure of the cooperation between the unwinding assembly and the crimping assembly in the present invention;

[0075] Figure 4 It is a schematic cross-sectional structural diagram of the unwinding assembly in the present invention;

[0076] Figure 5It is a structural schematic diagram of the cooperation of the unwinding assembly and the crimping assembly at another angle in the present invention;

[0077] Figure 6 It is a structural schematic diagram of the cooperation of the unwinding assembly and the crimping assembly at another angle in the present invention;

[0078] Figure 7 It is a schematic diagram of the planar structure of the unwinding assembly and the crimping assembly in the present invention;

[0079] Figure 8 It is a schematic cross-sectional structural diagram of the crimping assembly in the present invention;

[0080] Fig. 9 It is a cross-sectional structural schematic diagram of the cooperation between the continuous stamping assembly and the feeding assembly in the present invention;

[0081] Fig.10 It is a structural schematic diagram of the continuous stamping assembly in the present invention;

[0082] Fig.11 It is a schematic diagram of the structure of the feeding assembly in the present invention.

[0083] In the figure: 1, equipment frame; 2, unloading frame; 3, stamping frame; 4, fixing frame; 5, mounting frame; 6, first motor; 7, guide roller; 8, arc guide frame; 9, pressing frame; 10, conveying frame; 11, feeding roller; 12, second motor; 13, ultrasonic welding machine; 14, first electric cylinder; 15, welding frame; 16, welding plate; 17, welding plate; 18, adjusting frame; 19, second electric cylinder; 20, arc groove; 21, arc pressure strip; 22, third electric cylinder; 23, positioning frame; 24, bearing frame; 25, fourth electric cylinder; 26, fifth electric cylinder; 27, connecting frame; 28, punching rod; 29, punching hole; 30, mounting plate; 31, feeding plate; 32, material trough; 33, third motor; 34, unloading trough; 35, discharge frame. DETAILED DESCRIPTION

[0084] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0085] Embodiment 1, as Figures 1 to 11As shown, this embodiment proposes an automatic assembly device for inner and outer covers of sauce bottle caps, including an equipment frame 1, a feeding frame 2 is arranged on one side of the equipment frame 1, including a punching frame 3, a unwinding assembly, a crimping assembly, a continuous punching assembly and a feeding assembly, the punching frame 3 is fixedly installed inside the equipment frame 1, the unwinding assembly is installed on the unwinding frame 2, and is used to place the soft aluminum film roll, the unwinding assembly includes a fixed frame 4, a mounting frame 5, a first motor 6 and a guide conveying part, the unwinding frame 2 is symmetrically and rotatably installed with two fixed frames 4 on one side away from the equipment frame 1, the ends of the two fixed frames 4 are detachably installed with mounting frames 5, two first motors 6 are fixedly installed on the unwinding frame 2, the output ends of the two first motors 6 are respectively fixedly connected to the two fixed frames 4, and the guide conveying part is installed on the unwinding frame 2, and is used to guide the soft aluminum film.

[0086] The bottle cap is composed of an outer cap, an inner cap and a soft aluminum film. After the inner and outer caps are assembled, the assembly of the cap and the aluminum film can begin.

[0087] Specifically, before assembling the cap and the aluminum film, the aluminum film roll to be used is first installed, and the aluminum film roll is placed on the fixing frame 4. The two fixing frames 4 are both equipped with aluminum film rolls, and the sleeves of the aluminum film rolls are fixed on the fixing frames 4. Then the mounting frame 5 is installed on the fixing frame 4 in the form of a threaded connection, so as to fix the axial position of the aluminum film roll and facilitate disassembly and assembly. The aluminum film end on one of the aluminum film rolls passes through the crimping assembly and the guide conveying part. At this time, the guide conveying part is started to drive the aluminum film roll to move intermittently, and the first motor 6 is started at the same time. The first motor 6 drives the fixing frame 4 and the mounting frame 5 to rotate, so that the aluminum film on the corresponding aluminum film roll is moved out, which is convenient for installation operation. At the same time, the bottle cap is continuously conveyed to the inside of the feeding assembly. Through the setting of the feeding assembly, the bottle cap is continuously sent to the inside of the continuous stamping assembly. At this time, the continuous stamping assembly can be started to stamp the aluminum film, and the punched aluminum film is installed in the bottle cap. Then, through the setting of the feeding assembly, the bottle cap with the installed aluminum film can be sent out.

[0088] The above, such as Figures 2 to 4As shown, the guide conveying part includes a guide roller 7, an arc guide frame 8 and a pressing frame 9, two guide rollers 7 are rotatably and symmetrically installed on the unloading frame 2, the arc guide frame 8 is fixedly installed on the unloading frame 2, and the tail of the arc guide frame 8 is fixedly installed inside the equipment frame 1, wherein the arc guide frame includes a straight section and an arc section, the straight section is located inside the equipment frame 1, the arc section is located between the equipment frame 1 and the unloading frame 2, and the opening direction of the arc section is upward, the pressing frame 9 is rotatably installed on the arc section, and the free end of the pressing frame 9 abuts against the upper side of the arc section, and also includes a conveying frame 10, a feeding roller 11 and a second motor 12, the conveying frame 10 is fixedly installed at the discharge end of the equipment frame 1, two feeding rollers 11 are symmetrically and rotatably installed on the conveying frame 10, and a second motor 12 is fixedly installed on the conveying frame 10, and the output end of the second motor 12 is fixedly connected to the feeding roller 11.

[0089] Specifically, after the end of the aluminum film on one of the aluminum film rolls passes through the crimping assembly, the end of the aluminum film passes through the two guide rollers 7, then bypasses the lower part of the press frame 9, and enters the straight section of the arc-shaped guide frame 8 until it enters between the two feed rollers 11. The two feed rollers 11 clamp the aluminum film. When it is necessary to drive the aluminum film to move, start the second motor 12. The second motor 12 drives one of the feed rollers 11 to rotate, thereby driving the aluminum film to move with the cooperation of the other feed roller 11. During the movement, the press frame 9 and the aluminum film maintain relative sliding. Under the action of the gravity of the press frame 9, the aluminum film slides and cooperates with the arc section of the arc-shaped guide frame 8, thereby continuing to work during the process of replacing the aluminum film roll without stopping work, thereby improving work efficiency.

[0090] like Figures 5 to 8 As shown, a crimping assembly is installed on the unloading frame 2, which is used to replace the soft aluminum film roll during the working process and send it to the working position. The crimping assembly includes an ultrasonic welding machine 13, which is fixedly installed on the unloading frame 2, and also includes a first electric cylinder 14, a welding frame 15, a welding plate 16, a welding plate 17, an adjustment part and a positioning part. The first electric cylinder 14 is fixedly installed on the unloading frame 2, and the first electric cylinder 14 is located at the lower part of the ultrasonic welding machine 13. The output end of the first electric cylinder 14 is connected to the lower part of the ultrasonic welding machine 13. Both are fixedly installed with welding frames 15, and the two welding frames 15 are symmetrically arranged. A welding plate 16 is fixedly installed on the welding frame 15 located at the bottom of the ultrasonic welding machine 13, and the welding plate 16 is fixedly connected to the working end of the ultrasonic welding machine 13. A welding plate 17 is fixedly installed on the welding frame 15 located at the output end of the first electric cylinder 14, and two adjusting parts are symmetrically installed on the welding plate 16 and the welding plate 17. Positioning parts are installed at both ends of each adjusting part for fixing the soft aluminum film, and the adjusting part is used to adjust the position of the positioning part.

[0091] Specifically, when the aluminum film on the upper fixing frame 4 enters the working position, the end of the aluminum film roll on the lower fixing frame 4 is placed on the welding frame 15 on the first electric cylinder 14 until the end of the aluminum film roll is located in the area of ​​the welding plate 17. At this time, the position of the positioning part is adjusted by the adjusting part, and then the aluminum film is fixed to the position on the welding plate 17 by the positioning part. When the aluminum film roll entering the working position is about to be used up, the tail end of the aluminum film enters the area of ​​the welding plate 16. At this time, the aluminum film is fixed by the setting of the adjusting part and the positioning part on the welding frame 15 at the bottom of the ultrasonic welding machine 13, and then the first electric cylinder 14 is started. The first electric cylinder 14 pushes the corresponding welding frame 15 to move until the new and old sections of aluminum film are butt-jointed, and the two sections of aluminum film are pressed by the welding plate 16 and the welding plate 17. At this time, the ultrasonic welding machine 13 is started to butt the two sections of aluminum film together, and then the first electric cylinder 14 can be retracted.

[0092] The above, such as Figure 8 As shown, the positioning part includes a positioning frame 18 and a second electric cylinder 19. Two positioning frames 18 are symmetrically and slidably installed on the welding plate 16 and the welding plate 17. Two second electric cylinders 19 are symmetrically and fixedly installed on the two welding frames 15. The output end of the second electric cylinder 19 is fixedly connected to the positioning frame 18.

[0093] Specifically, when the position of the arc-shaped pressure strip 21 needs to be adjusted, the second motor 12 is started, and the second motor 12 drives the adjustment frame 18 to move, thereby adjusting the position of the arc-shaped pressure strip 21, thereby playing the role of fixing and adjusting the position of the aluminum film.

[0094] The above, such as Figure 8 As shown, the positioning portion includes an arc groove 20, an arc pressure strip 21 and a third electric cylinder 22. Two arc grooves 20 are symmetrically opened on the two welding frames 15. The edges of the arc grooves 20 smoothly transition with the welding frames 15. The two ends of each adjustment frame 18 are symmetrically and slidably installed with arc pressure strips 21. The two ends of each adjustment frame 18 are symmetrically and fixedly installed with the third electric cylinder 22. The output end of the third electric cylinder 22 is fixedly connected to the arc pressure strip 21.

[0095] Specifically, when it is necessary to fix the position of the aluminum film on the welding frame 15, with the cooperation of the second electric cylinder 19, the third electric cylinder 22 is started, and the third electric cylinder 22 pushes the arc strip 21 to extend until the aluminum film is between the welding frame 15 and the arc strip 21, and then the second electric cylinder 19 is retracted. The position of the aluminum film on the welding frame 15 can be fixed by the cooperation of the arc strip 21 and the arc groove 20, and the setting of the arc groove 20 can prevent the aluminum film from being bent, thereby ensuring the flatness and welding quality of the aluminum film, making the docking and welding of the aluminum film more efficient and accurate.

[0096] Supplement for changing soft aluminum film rolls during work, such as Figure 7 As shown, first, if the aluminum film on the upper fixing frame 4 enters into operation, it is necessary to make the aluminum film pass through the arc strip 21 at position B. At this time, relative sliding occurs between the aluminum film and the arc strip 21 and the arc groove 20. At the same time, the end of the lower aluminum film is passed through the arc strip 21 and the arc groove 20 at position C until the end of the lower aluminum film is located in the upper area of ​​the welding plate 17, and then the position of the aluminum film can be fixed. When the upper aluminum film is about to be used up, until the tail end of the aluminum film enters the area of ​​the welding plate 16, the second electric cylinder 19 at position B can be started, thereby driving the adjustment frame 18 to move, thereby adjusting the position of the arc strip 21, and fixing the aluminum film through the cooperation of the arc strip 21 and the arc groove 20, and then immediately starting the first electric cylinder 14, which drives the lower welding frame 15 to move until the welding plate 17 is The end of the aluminum film on the plate 17 is docked with the tail end of the aluminum film on the welding plate 16 to ensure a tight fit, and then the ultrasonic welding machine 13 is started for welding, and then the third electric cylinder 22 at B is retracted, so that the arc pressure strip 21 at B is separated from the aluminum film, and then the first electric cylinder 14 is retracted to drive the lower welding frame 15 to move downward for a distance, which is smaller than the stroke of the second electric cylinder 19, and then the second electric cylinder 19 at D is started, and the arc pressure strip 21 at D is adjusted to above the aluminum film, and the third electric cylinder 22 at D is started to push the corresponding arc pressure strip 21 out, and then the second electric cylinder 19 at D is retracted, so that the arc pressure strip 21 limits the aluminum film between the arc groove 20 and the arc pressure strip 21 at D, and does not affect the normal movement of the aluminum film, and then the used aluminum film roll on the upper fixed frame 4 is taken down and replaced with a new aluminum film roll.

[0097] When the lower aluminum film roll is about to be used up, the upper aluminum film roll is replaced first, and then the end of the upper aluminum film is passed through the gap between the arc pressure strip 21 and the arc groove 20 at A until the upper aluminum film is located in the area of ​​the welding plate 16, and the position of the aluminum film can be fixed. When the lower aluminum film is about to be used up, until the tail end of the aluminum film enters the area of ​​the receiving plate 17, the second electric cylinder 19 at D is started to fix the lower aluminum film through the arc pressure strip 21, and then the first motor 6 is started to push the lower welding frame 15 to move until the tail end of the aluminum film on the receiving plate 17 is docked with the end of the aluminum film on the welding plate 16, and ensure that Tightly fit, then start the ultrasonic welding machine 13 for welding. After welding, retract the first electric cylinder 14, drive the lower welding frame 15 to move downward a distance, and then start the second electric cylinder 19 at B, adjust the arc pressure strip 21 at B to under the aluminum film, start the third electric cylinder 22 at B, push the corresponding arc pressure strip 21 out, and then retract the second electric cylinder 19 at B, so that the arc pressure strip 21 limits the aluminum film between the arc groove 20 and the arc pressure strip 21 at B, and does not affect the normal movement of the aluminum film, then take down the used aluminum film roll on the lower fixed frame 4, and replace it with a new aluminum film roll.

[0098] By repeating the above steps, the aluminum film can be quickly replaced without stopping the installation process of the aluminum film and the bottle cap, while ensuring the neatness and tightness of the two sections of aluminum film docking, ensuring the stability of the production process and the consistency of product quality.

[0099] like Fig. 9 , Fig.10 As shown, the continuous stamping assembly is installed on the stamping frame 3, which is used to stamp the soft aluminum film into the inside of the bottle cap. The continuous stamping assembly includes a positioning frame 23, a supporting frame 24, a fourth electric cylinder 25, a fifth electric cylinder 26, a connecting frame 27, a stamping rod 28 and a stamping hole 29. The positioning frame 23 is fixedly installed on the stamping frame 3, the positioning frame 23 is located at the upper part of the straight section, the supporting frame 24 is arranged on the upper part of the positioning frame 23, two fourth electric cylinders 25 are fixedly installed on the inner bottom wall of the equipment frame 1, and the output ends of the two fourth electric cylinders 25 are respectively fixedly connected to the two ends of the bottom of the supporting frame 24, the fifth electric cylinder 26 is fixedly installed inside the supporting frame 24, and the output end of the fifth electric cylinder 26 is fixedly installed with a connecting frame 27, and three stamping rods 28 are fixedly installed on the connecting frame 27 at equal distances. Three stamping holes 29 are opened on the positioning frame 23 and the arc guide frame 8, and the stamping holes 29 correspond to the stamping rods 28.

[0100] Specifically, when stamping the aluminum film, the fourth electric cylinder 25 is started to drive the supporting frame 24 to rise, so that the stamping rod 28 is aligned with the stamping hole 29, and then the fourth electric cylinder 25 is retracted, so that the stamping rod 28 enters the stamping hole 29, and then the fifth electric cylinder 26 is started to push the connecting frame 27 to drive the stamping rod 28 to press down, so that the aluminum film is accurately stamped into the inside of the bottle cap to ensure that the aluminum film and the bottle cap are tightly combined. After the stamping is completed, the supporting frame 24 is pushed up by the fourth electric cylinder 25, and the fifth electric cylinder 26 is retracted at the same time. At this time, the stamping rod 28 is separated from the stamping hole 29, and a stamping cycle is completed. During the stamping process, the electric cylinders work together to ensure uniform stamping force, prevent the aluminum film from tearing or deforming, and ensure the quality of bottle cap packaging.

[0101] like Fig.11 As shown, the feeding assembly is installed on the punching frame 3, and is used for loading and unloading bottle caps. The feeding assembly includes a mounting plate 30, a feeding plate 31, a material trough 32, a third motor 33, a material discharge trough 34 and a discharge rack 35. The mounting plate 30 is fixedly mounted on the punching frame 3, and the feeding plate 31 is rotatably mounted on the mounting plate 30. The feeding plate 31 is circularly provided with multiple groups of material troughs 32 at equal angles, and each group of material troughs 32 is provided with three material troughs, and the material troughs 32 are adapted to the punching rod 28. The punching frame 3 is fixedly provided with a third motor 33, and the output end of the third motor 33 is fixedly connected to the feeding plate 31. The mounting plate 30 is provided with a material discharge trough 34, and the punching frame 3 is provided with a material discharge rack 35, which is located at the bottom of the material discharge trough 34.

[0102] Specifically, when installing aluminum film on the bottle caps, the bottle caps are fed into a group of feeding troughs 32 side by side through the feeding equipment, that is, three bottle caps are fed into the corresponding feeding troughs 32 at the same time, and then the third motor 33 is started to drive the feeding tray 31 to rotate intermittently in the installation tray 30. Three bottle caps will enter the feeding troughs 32 at corresponding positions each time the rotation occurs, and three bottle caps will enter the lower part of the positioning frame 23 each time the stop occurs. The three bottle caps in this area correspond to the three stamping holes 29 on the positioning frame 23 respectively, and can be stamped and installed. The bottle caps after the aluminum film is installed will fall into the discharge rack 35 when passing through the discharge trough 34 as the feeding tray 31 rotates. By arranging a discharge device in the discharge rack 35, the bottle caps with the aluminum film installed can be sent to the next link.

[0103] The working principle or usage process of this application is:

[0104] After completing the assembly of the inner and outer covers, start assembling the cover and the aluminum film. Before assembling the cover and the aluminum film, first install the aluminum film roll to be used, and put the aluminum film roll into the fixing frame 4. Both fixing frames 4 are equipped with aluminum film rolls, and the sleeve of the aluminum film roll is fixed on the fixing frame 4. Then, the mounting frame 5 is installed on the fixing frame 4 in the form of a threaded connection, so as to fix the axial position of the aluminum film roll and facilitate disassembly and assembly.

[0105] After the end of the aluminum film on one of the aluminum film rolls passes through the corresponding arc groove 20 and the arc pressure strip 21, the end of the aluminum film passes through the two guide rollers 7, then bypasses the lower part of the pressing frame 9, and then enters the straight section of the arc guide frame 8 until it enters between the two feed rollers 11. The two feed rollers 11 clamp the aluminum film. When it is necessary to drive the aluminum film to move, start the second motor 12. The second motor 12 drives one of the feed rollers 11 to rotate, thereby driving the aluminum film to move with the cooperation of the other feed roller 11. During the movement, the pressing frame 9 and the aluminum film maintain relative sliding, and the aluminum film slides with the arc section of the arc guide frame 8 under the action of the gravity of the pressing frame 9.

[0106] At this time, the aluminum film is installed on the bottle caps synchronously. At this time, the bottle caps are fed into a group of feeding troughs 32 side by side through the feeding equipment, that is, three bottle caps are fed into the corresponding feeding troughs 32 at the same time, and then the third motor 33 is started to drive the feeding tray 31 to rotate intermittently in the installation tray 30. Each time it rotates, three bottle caps will enter the feeding troughs 32 at the corresponding positions. At the same time, each time it stops, three bottle caps will enter the lower part of the positioning frame 23. The three bottle caps in this area correspond to the three stamping holes 29 on the positioning frame 23 respectively, and can be stamped and installed. At this time, the fourth electric cylinder 25 is started to drive the carrying frame 24 to rise, so that the stamping rod 28 is aligned with the stamping hole 29, and then the fourth electric cylinder 25 is retracted, so that the stamping rod 28 enters the stamping hole 29, and then the fifth electric cylinder 26 is started to push the connecting frame 27 to drive The punching rod 28 is pressed down to accurately punch the aluminum film into the inside of the bottle cap to ensure that the aluminum film is tightly combined with the bottle cap. After the punching is completed, the fourth electric cylinder 25 pushes the supporting frame 24 to rise, and the fifth electric cylinder 26 is retracted at the same time. At this time, the punching rod 28 is disengaged from the punching hole 29, and a punching cycle is completed. At the same time, the first motor 6 is started, and the first motor 6 drives the fixing frame 4 and the mounting frame 5 to rotate, so that the aluminum film on the corresponding aluminum film roll is removed, which is convenient for installation operation. During the punching process, the electric cylinders work together to ensure uniform punching force, prevent the aluminum film from tearing or deforming, and ensure the packaging quality of the bottle cap. After the aluminum film is installed, the bottle cap will fall into the discharge rack 35 when passing through the discharge chute 34 as the feeding tray 31 rotates. By arranging a discharge device in the discharge rack 35, the bottle cap with the aluminum film installed can be sent to the next link.

[0107] When the aluminum film on the upper fixing frame 4 is about to be used up, the end of the aluminum film roll on the lower fixing frame 4 is placed on the welding frame 15 on the first electric cylinder 14 until the end of the aluminum film roll is located in the area of ​​the welding plate 17. At this time, the aluminum film is fixed to the position on the welding plate 17 by the arc groove 20 and the arc pressure strip 21. When the aluminum film roll entering the working position is about to be used up, the tail end of the aluminum film enters the area of ​​the welding plate 16. At this time, the aluminum film on the welding frame 15 at the bottom of the ultrasonic welding machine 13 is fixed, and then the first electric cylinder 14 is started. The first electric cylinder 14 pushes the corresponding welding frame 15 to move until the new and old sections of aluminum film are docked, and the two sections of aluminum film are pressed by the welding plate 16 and the welding plate 17. At this time, the ultrasonic welding machine 13 is started to dock the two sections of aluminum film together, and then the first electric cylinder 14 is retracted.

[0108] Through the cooperation of the second electric cylinder 19 and the third electric cylinder 22 at four positions ABCD, the new and old sections of aluminum film can be quickly and accurately docked without stopping work, thereby improving work efficiency.

[0109] Embodiment 2: Based on an automatic assembly device for inner and outer covers of a sauce bottle cap, this embodiment 2 also proposes an automatic assembly method for inner and outer covers of a sauce bottle cap. The specific assembly process is as follows:

[0110] The first step is injection molding of the outer cover, using a horizontal injection molding machine to perform injection molding to form the outer cover;

[0111] The second step is to sort the caps. The outer caps after injection molding are transported to three vibration plates through the conveyor track for sorting.

[0112] The fourth step is feeding, which is transmitted from the vibration plate to the feeding track. There are multiple blowing ports inclined above and below the feeding track. The upper blowing port blows hot air to make the connection of the outer cover have a certain temperature to prevent the connection of the outer cover from being too hard due to too fast cooling and breaking in the subsequent closing process. The wind blown out of the upper blowing port and the lower blowing port drives the outer cover to move forward. There are also 3 feeding tracks. A mobile feeding channel is set in the middle of the feeding track. A sensor is set on each feeding track. When the outer covers on the feeding track are arranged to reach the sensor position, the number of outer covers arranged on the feeding track reaches a predetermined number. The mobile feeding channel moves to the corresponding feeding track, so that the outer covers reaching the predetermined number move forward through the mobile feeding channel until they move to the closing mechanism.

[0113] The fifth step is to close the cover. A plurality of fixed jaws are arranged on the outer peripheral side of the turntable to fix the outer cover. A cover closing block is also arranged on the outer peripheral side of the turntable. The outer cover passes through the cover closing block under the drive of the turntable to close the outer cover. The closed outer cover is transported to the inner and outer cover assembly mechanism.

[0114] The sixth step is assembly. The soft cover and the soft cover bracket are first assembled together in the inner and outer cover assembly mechanism. The inner and outer cover assembly mechanism includes a turntable. A plurality of positioning pins are arranged on the outer peripheral side of the turntable. One of the vibration disks feeds the soft cover onto the positioning pins. A cross scratch is arranged in the middle of the soft cover. The other vibration disk also feeds the soft cover bracket onto the positioning pins and is located above the soft cover. The pressure rod above the turntable is pressed down to combine the soft cover bracket and the soft cover together. The combined two are taken out of the positioning pins and moved upward. The pressure rod is pressed down again to press the soft cover bracket and the soft cover into the closed outer cover to complete the assembly of the inner and outer covers. The assembled covers are transported to the soft aluminum film assembly mechanism.

[0115] The seventh step is feeding, through the feeding equipment, the bottle caps are fed into a group of feeding slots 32 side by side, that is, three bottle caps are fed into the corresponding feeding slots 32 at the same time, and then the third motor 33 is started to drive the feeding plate 31 to rotate intermittently in the mounting plate 30, and three bottle caps will enter the corresponding positions of the feeding slots 32 each time the rotation, and three bottle caps will enter the lower part of the positioning frame 23 each time the stop, and the three bottle caps in this area correspond to the three punching holes 29 on the positioning frame 23 respectively, and can be punched and installed;

[0116] Step 8: stamping. Start the fourth electric cylinder 25 to drive the supporting frame 24 to rise, align the punching rod 28 with the punching hole 29, then retract the fourth electric cylinder 25, so that the punching rod 28 enters the punching hole 29, and then start the fifth electric cylinder 26 to push the connecting frame 27 to drive the punching rod 28 to press down, accurately stamp the aluminum film into the bottle cap, and ensure that the aluminum film and the bottle cap are tightly combined. After the stamping is completed, the fourth electric cylinder 25 pushes the supporting frame 24 to rise, and the fifth electric cylinder 26 is retracted at the same time. At this time, the punching rod 28 is separated from the punching hole 29, and a stamping cycle can be completed.

[0117] The ninth step is to load the aluminum film. The first motor 6 is started synchronously to drive the fixing frame 4 and the mounting frame 5 to rotate, so that the aluminum film on the corresponding aluminum film roll is removed to facilitate the installation operation. At the same time, the second motor 12 is started, and the second motor 12 drives one of the feeding rollers 11 to rotate, thereby driving the aluminum film to move with the cooperation of the other feeding roller 11;

[0118] Step 10: Replace the aluminum film. Without stopping the Azhuang aluminum film, the second electric cylinder 19 and the third electric cylinder 22 at ABCD are used to quickly and accurately connect the new and old sections of aluminum film, thereby improving work efficiency.

[0119] The eleventh step is unloading. The bottle caps with the aluminum film installed will fall into the discharge rack 35 when passing through the unloading chute 34 as the feeding tray 31 rotates. By setting a discharge device in the discharge rack 35, the bottle caps with the aluminum film installed can be sent to the next link to complete the bottle cap assembly.

[0120] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic assembly device for inner and outer covers of a sauce bottle cap, comprising an equipment frame (1), a material discharging frame (2) being arranged on one side of the equipment frame (1), characterized in that: include: A punching machine frame (3), wherein the punching machine frame (3) is fixedly installed inside the equipment frame (1); An unwinding assembly, the unwinding assembly being mounted on the unwinding frame (2) and being used for placing a soft aluminum film roll; A crimping assembly, the crimping assembly being mounted on the unwinding frame (2) and being used to replace the soft aluminum film roll during operation and to deliver it to the working position; A continuous punching assembly, which is mounted on the punching frame (3) and is used for punching the soft aluminum film into the interior of the bottle cap; A feeding assembly is installed on the punching machine frame (3) and is used for loading and unloading bottle caps.

2. The automatic assembly device for inner and outer covers of a sauce bottle cap according to claim 1, characterized in that: The unwinding assembly comprises: A fixed frame (4), two of the fixed frames (4) are symmetrically and rotatably mounted on one side of the unloading frame (2) away from the equipment frame (1); A mounting frame (5), the mounting frame (5) being detachably mounted on the ends of the two fixing frames (4); A first motor (6), two of the first motors (6) are fixedly mounted on the unloading frame (2), and output ends of the two first motors (6) are respectively fixedly connected to the two fixing frames (4); A guide conveying part, which is installed on the unloading machine frame (2) and is used to guide the soft aluminum film.

3. The automatic assembly device for inner and outer covers of a sauce bottle cap according to claim 2, characterized in that: The guide conveying part comprises: Guide rollers (7), two guide rollers (7) are rotatably and symmetrically mounted on the unloading frame (2); An arc-shaped guide frame (8), wherein the arc-shaped guide frame (8) is fixedly mounted on the unloading frame (2), and the tail of the arc-shaped guide frame (8) is fixedly mounted inside the equipment frame (1); The arc-shaped guide frame comprises a straight section and an arc-shaped section, the straight section is located inside the equipment frame (1), the arc-shaped section is located between the equipment frame (1) and the unloading frame (2), and the opening direction of the arc-shaped section faces upward; A material pressing frame (9), the material pressing frame (9) is rotatably mounted on the arc segment, and the free end of the material pressing frame (9) abuts against the upper side of the arc segment.

4. The automatic assembly device for inner and outer covers of a sauce bottle cap according to claim 3, characterized in that: Also includes: A conveyor frame (10), wherein the conveyor frame (10) is fixedly mounted on the discharge end of the equipment frame (1); Feeding rollers (11), two feeding rollers (11) are symmetrically and rotatably mounted on the conveying frame (10); A second motor (12), the second motor (12) is fixedly mounted on the conveyor frame (10), and the output end of the second motor (12) is fixedly connected to the feeding roller (11).

5. According to the automatic assembly device of the inner and outer covers of a sauce bottle cap according to claim 4, the crimping assembly comprises an ultrasonic welding machine (13), and the ultrasonic welding machine (13) is fixedly installed on the unloading frame (2), characterized in that: Also includes: A first electric cylinder (14), the first electric cylinder (14) is fixedly mounted on the unloading machine frame (2), and the first electric cylinder (14) is located at the lower part of the ultrasonic welding machine (13); A welding frame (15), the welding frame (15) being fixedly mounted on the output end of the first electric cylinder (14) and the lower part of the ultrasonic welding machine (13), and the two welding frames (15) being symmetrically arranged; A welding plate (16), the welding plate (16) being fixedly mounted on the welding frame (15) at the bottom of the ultrasonic welding machine (13), and the welding plate (16) being fixedly connected to the working end of the ultrasonic welding machine (13); A welding plate (17) is fixedly mounted on the welding frame (15) at the output end of the first electric cylinder (14); A positioning part, wherein two of the positioning parts are symmetrically mounted on the welding plate (16) and the receiving plate (17); The positioning part is installed at both ends of each of the adjustment parts and is used to fix the soft aluminum film. The adjustment part is used to adjust the position of the positioning part.

6. The automatic assembly device for inner and outer covers of a sauce bottle cap according to claim 5, characterized in that: The positioning unit comprises: Position adjustment frames (18), two of which are symmetrically and slidably mounted on the welding plate (16) and the receiving plate (17); A second electric cylinder (19), two of which are symmetrically and fixedly mounted on the two welding frames (15), and an output end of the second electric cylinder (19) is fixedly connected to the position adjustment frame (18).

7. The automatic assembly device for inner and outer covers of a sauce bottle cap according to claim 6, characterized in that: The positioning portion comprises: Arc grooves (20), two arc grooves (20) are symmetrically provided on the two welding frames (15), and the edges of the arc grooves (20) smoothly transition with the welding frames (15); An arc-shaped pressure strip (21), the arc-shaped pressure strip (21) being symmetrically and slidably mounted on both ends of each of the adjustment frames (18); A third electric cylinder (22), the third electric cylinder (22) is symmetrically and fixedly mounted on both ends of each of the positioning frames (18), and the output end of the third electric cylinder (22) is fixedly connected to the arc-shaped pressure strip (21).

8. The automatic assembly device for inner and outer covers of a sauce bottle cap according to claim 7, characterized in that: The continuous stamping assembly comprises: A positioning frame (23), the positioning frame (23) is fixedly mounted on the punching machine frame (3), and the positioning frame (23) is located at the upper part of the straight section; A bearing frame (24), wherein the bearing frame (24) is arranged on the upper part of the positioning frame (23); A fourth electric cylinder (25), two of which are fixedly mounted on the inner bottom wall of the equipment frame (1), and the output ends of the two fourth electric cylinders (25) are respectively fixedly connected to the two ends of the bottom of the supporting frame (24); a fifth electric cylinder (26), the fifth electric cylinder (26) being fixedly mounted inside the supporting frame (24); A connecting frame (27), the connecting frame (27) being fixedly mounted on the output end of the fifth electric cylinder (26); Punching rods (28), three of the punching rods (28) are fixedly mounted on the connecting frame (27) at equal distances; Punching holes (29), three punching holes (29) are provided on the positioning frame (23) and the arc-shaped guide frame (8), and the punching holes (29) correspond to the punching rods (28).

9. The automatic assembly device for inner and outer covers of a sauce bottle cap according to claim 8, characterized in that: The feeding assembly comprises: A mounting plate (30), wherein the mounting plate (30) is fixedly mounted on the punching machine frame (3); A feeding tray (31), the feeding tray (31) being rotatably mounted on the mounting tray (30); The feeding trough (32) is provided with a plurality of groups of the feeding troughs (32) at equal angles in a circular shape on the feeding plate (31), and each group of the feeding troughs (32) is provided with three groups, and the feeding troughs (32) are adapted to the punching rod (28); A third motor (33), the third motor (33) is fixedly mounted on the punching machine frame (3), and the output end of the third motor (33) is fixedly connected to the feeding tray (31); A material discharge trough (34), wherein the mounting plate (30) is provided with the material discharge trough (34); A discharge rack (35), the discharge rack (35) is installed on the punching machine frame (3), and the discharge rack (35) is located at the bottom of the discharge chute (34).

10. A method for automatically assembling inner and outer covers of a sauce bottle cap, using the automatic assembly device for inner and outer covers of a sauce bottle cap according to claim 9, characterized in that: The following steps are involved: The first step is injection molding of the outer cover, using a horizontal injection molding machine to perform injection molding to form the outer cover; The second step is to sort the caps. The outer caps after injection molding are transported to three vibration plates through the conveyor track for sorting. The fourth step is feeding, which is transmitted from the vibration plate to the feeding track. There are also 3 feeding tracks. A mobile feeding channel is set in the middle of the feeding track. A sensor is set on each feeding track. When the outer covers on the feeding track are arranged to reach the sensor position, the number of outer covers on the feeding track reaches a predetermined number, and the mobile feeding channel moves to the corresponding feeding track, so that the outer covers reaching the predetermined number move forward through the mobile feeding channel until they move to the cover closing mechanism. The fifth step is to close the cover. A plurality of fixed jaws are arranged on the outer peripheral side of the turntable to fix the outer cover. A cover closing block is also arranged on the outer peripheral side of the turntable. The outer cover passes through the cover closing block under the drive of the turntable to close the outer cover. The closed outer cover is transported to the inner and outer cover assembly mechanism. The sixth step is assembly. In the inner and outer cover assembly mechanism, the soft cover and the soft cover bracket are first assembled together, and the two assembled together are taken out and moved upward. The pressure rod is pressed down again to press the soft cover bracket and the soft cover into the closed outer cover to complete the assembly of the inner and outer covers. The assembled covers are transported to the soft aluminum film assembly mechanism. The seventh step is feeding, through the feeding device, the bottle caps are fed into a group of material troughs (32) side by side, that is, three bottle caps are fed into corresponding material troughs (32) at the same time, and then the third motor (33) is started to drive the feeding plate (31) to rotate intermittently in the mounting plate (30). Each time the feeding plate rotates, three bottle caps enter the material troughs (32) at corresponding positions, and each time the feeding plate stops, three bottle caps enter the lower part of the positioning frame (23). The three bottle caps in this area correspond to the three punching holes (29) on the positioning frame (23) respectively, and can be punched and installed; Step 8: stamping. Start the fourth electric cylinder (25) to drive the supporting frame (24) to rise, align the punching rod (28) with the punching hole (29), then retract the fourth electric cylinder (25) so that the punching rod (28) enters the punching hole (29), then start the fifth electric cylinder (26) to push the connecting frame (27) to drive the punching rod (28) to press down, and punch the aluminum film into the bottle cap to ensure that the aluminum film and the bottle cap are tightly combined. After the stamping is completed, the fourth electric cylinder (25) drives the supporting frame (24) to rise, and at the same time retracts the fifth electric cylinder (26). At this time, the punching rod (28) is separated from the punching hole (29), completing a stamping cycle. The ninth step is to load the aluminum film. The first motor (6) is started synchronously to drive the fixed frame (4) and the mounting frame (5) to rotate, so that the aluminum film on the corresponding aluminum film roll is removed. At the same time, the second motor (12) is started, and the second motor (12) drives one of the feed rollers (11) to rotate, thereby driving the aluminum film to move with the cooperation of the other feed roller (11); Step 10: Replace the aluminum film. Without stopping the Azhuang aluminum film, the second electric cylinder (19) and the third electric cylinder (22) at four locations ABCD are used to connect the new and old sections of the aluminum film. The eleventh step is unloading. The bottle caps after the aluminum film is installed will fall into the discharge rack (35) when passing through the unloading chute (34) as the feeding plate (31) rotates. By arranging a discharge device in the discharge rack (35), the bottle caps after the aluminum film is installed are sent to the next link, and the bottle cap assembly can be completed.

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