A bottle cap and its inner gasket press-fitting device

Abstract

The application relates to a bottle cap and an inner gasket press-fitting device thereof and relates to the technical field of bottle cap processing. The device comprises a rack and a press-fitting mechanism. The press-fitting mechanism comprises a punch. A conveying mechanism is arranged on the rack. The conveying mechanism comprises a transmission belt which makes intermittent motion. A plurality of positioning grooves are formed in the outer surface of the transmission belt, and the positioning grooves are used for placing bottle caps. The rack is fixedly connected with a horizontally arranged tray and a vertically arranged blanking cylinder. Gaskets are stacked in the blanking cylinder. A dial plate is rotatably arranged on the upper surface of the tray. A plurality of dial holes are vertically formed in the dial plate. Any dial hole is vertically opposite to the blanking cylinder. A through hole is vertically formed in the tray and is located directly below the punch. The dial hole and the positioning groove can be simultaneously moved to be vertically aligned with the through hole. The application has the effects of facilitating automatic alignment of the gasket and the bottle cap, improving production efficiency and reducing safety hazards.

Description

Technical Field

[0001] This application relates to the field of bottle cap processing technology, and in particular to a bottle cap and its inner gasket pressing device. Background Technology

[0002] A bottle cap is a common structure used to seal bottles. It is generally round or ring-shaped with a groove. During the production and processing of bottle caps, a gasket needs to be pressed into the groove of the bottle cap to ensure the sealing performance of the bottle when it is sealed.

[0003] Common bottle cap pressing devices in related technologies typically include a frame and a pressing mechanism. The pressing mechanism includes a punch that slides vertically and a sliding assembly that drives the punch to slide. During operation, the bottle cap is placed on the worktable of the frame with the groove of the bottle cap facing upward. Then, a gasket is fed into the bottle cap. The sliding assembly is then activated, and the sliding assembly drives the punch to smoothly press the gasket into the bottom of the groove, thereby completing the connection between the gasket and the bottle cap.

[0004] In the process of developing this application, it was found that the technology has at least the following problems: manually placing the gasket and bottle cap is cumbersome and has low production efficiency. At the same time, during the process of placing the gasket and bottle cap, the punch is easy to press on the worker's hand, which poses a certain safety hazard. Summary of the Invention

[0005] To facilitate automatic alignment of the gasket and bottle cap, improve production efficiency, and reduce safety hazards, this application provides a bottle cap and its inner gasket pressing device.

[0006] The bottle cap inner gasket pressing device provided in this application adopts the following technical solution: A bottle cap inner gasket pressing device includes a frame and a pressing mechanism. The pressing mechanism includes a punch that slides vertically and a sliding assembly that drives the punch to slide. A transport mechanism is mounted on the frame. The transport mechanism includes a transmission belt that moves intermittently. The outer surface of the transmission belt has several positioning grooves, all of which are evenly spaced along the length of the transmission belt. The positioning grooves are for placing bottle caps. A horizontally arranged tray and a vertically arranged feeding cylinder are fixedly connected to the frame. Gaskets are stacked in the feeding cylinder. The tray... A dial is rotatably mounted on the surface, and a rotating assembly is mounted on the frame to drive the dial to rotate intermittently. The upper surface of the dial can block the bottom end of the feed cylinder. The dial has several holes that extend vertically through it. All the holes are evenly spaced and arranged on the circumference of the dial. Any hole is directly opposite the feed cylinder in the vertical direction and allows the pad at the bottom of the feed cylinder to enter. The tray has a through hole that extends vertically through it. The through hole is located directly below the punch. The holes and positioning groove can be moved simultaneously to be aligned with the through hole in the vertical direction.

[0007] By adopting the above technical solution, when pressing bottle caps and gaskets are required, the bottle caps are placed in the positioning groove of the conveyor belt. The conveyor belt moves intermittently, conveying the bottle caps sequentially to the area directly below the punch. The dialing hole and the feeding cylinder are vertically aligned, and the gasket at the bottom of the feeding cylinder falls into the dialing hole under gravity. Simultaneously with the intermittent movement of the conveyor belt, the rotating component drives the dial to rotate intermittently. When the dial containing the gasket rotates to align vertically with the through hole on the tray, the dial stops, and the gasket is positioned directly below the punch. At this time, the positioning groove on the conveyor belt also conveys the bottle cap to the position aligned with the through hole, i.e., directly below the punch. Then, the sliding component drives the punch to slide vertically downwards, smoothly pressing the gasket into the groove of the bottle cap, completing the pressing of the gasket into the bottle cap. This achieves automatic transport of bottle caps through the transport mechanism and automatic feeding and positioning of gaskets through the dial and rotating component. The intermittent movement of the conveyor belt and the intermittent rotation of the dial work together to ensure accurate alignment of the gaskets and caps, eliminating the need for manual placement and improving production efficiency. At the same time, it minimizes the risk of workers' hands being crushed by the punch during the placement of gaskets and caps, reducing safety hazards.

[0008] Preferably, the transmission belt is a synchronous belt, and the conveying mechanism further includes a first meshing roller, a second meshing roller, and a motor. There is one second meshing roller at each end of the frame, and the first meshing roller rotates in the middle of the frame. The first meshing roller and the two second meshing rollers together tighten the transmission belt and mesh with the transmission belt. The motor is fixed on the frame and is used to drive the first meshing roller to rotate.

[0009] By adopting the above technical solution, the synchronous belt drive has the characteristics of accurate transmission, no slippage during operation and constant transmission ratio, which can ensure that the transmission belt makes stable intermittent motion, so that the positioning groove accurately delivers the bottle cap to the punch directly below, improving the accuracy of bottle cap transportation; the motor drives the first meshing roller to rotate, and then drives the transmission belt to rotate through meshing. The bottle caps carried on the transmission belt move horizontally between the two second meshing rollers, completing the smooth transportation of the bottle caps.

[0010] Preferably, the transport mechanism further includes an incomplete gear and a first gear, wherein the first gear is coaxially fixed with a first meshing roller, the incomplete gear is coaxially fixed with the drive shaft of the motor, and the incomplete gear can mesh with the first gear.

[0011] By adopting the above technical solution, when the motor drives the incomplete gear to rotate, the toothed part of the incomplete gear meshes with the first gear, driving the first gear to rotate, which in turn causes the first meshing roller to rotate, driving the conveyor belt to move and transporting the bottle cap to the bottom of the punch. When the toothless part of the incomplete gear rotates to be opposite to the first gear, the first gear stops rotating, and the conveyor belt also stops moving. At this time, the punch performs the pressing operation, thus realizing the intermittent movement of the conveyor belt. Without the need for complex control circuits, the start and stop of the conveyor belt can be precisely controlled by mechanical structure alone, so that the bottle cap transportation and pressing actions are coordinated, improving production efficiency and stability.

[0012] Preferably, a locking rod is rotatably mounted on the frame, and a locking tooth is fixedly mounted on the locking rod. The locking tooth can be inserted into the tooth groove of the first gear. A torsion spring is provided at the rotatable connection between the locking rod and the frame. The torsion spring drives the locking rod closer to the first gear. An unlocking component is also provided on the frame. The unlocking component is used to drive the locking rod away from the first gear.

[0013] By adopting the above technical solution, when the toothless part of the incomplete gear rotates to face the first gear and the transmission belt stops moving, the torsion spring drives the locking rod to rotate, so that the locking teeth insert into the tooth groove of the first gear, locking the first gear and preventing the first gear from rotating unexpectedly. This ensures that the bottle cap position remains fixed during the pressing operation of the punch, improving the stability of the pressing. Before the toothed part of the incomplete gear meshes with the first gear again, the unlocking component actuates, driving the locking rod away from the first gear, so that the locking teeth disengage from the tooth groove of the first gear, releasing the lock on the first gear, allowing the first gear to rotate normally under the drive of the incomplete gear, and realizing the restart of the transmission belt.

[0014] Preferably, the unlocking element includes a cam, which is coaxially fixed with the incomplete gear and abuts against the locking rod.

[0015] By adopting the above technical solution, when the incomplete gear rotates, the cam fixed coaxially with the incomplete gear rotates synchronously. The profile curve of the cam is specially designed so that when the toothed part of the incomplete gear is about to mesh with the first gear, the convex part of the cam abuts against the locking rod, overcoming the elastic force of the torsion spring, driving the locking rod to rotate, causing the locking teeth to disengage from the tooth groove of the first gear, releasing the lock on the first gear, ensuring that the first gear can rotate freely, and realizing the start of the transmission belt; when the toothless part of the incomplete gear rotates to be opposite to the first gear, the convex part of the cam moves away from the locking rod, the locking rod is reset under the action of the torsion spring, and the locking teeth re-insert into the tooth groove of the first gear, locking the first gear.

[0016] Preferably, the sliding assembly includes a slide rail, a slider, a crank, a connecting rod, and a power component. The slide rail is fixedly connected to the frame, the slider slides vertically within the slide rail, the punch is fixed to the bottom of the slider, the crank is rotatably connected to the frame, one end of the connecting rod is rotatably connected to the end face of the crank, the other end of the connecting rod is rotatably connected to the slider, and the power component is used to drive the crank to rotate.

[0017] By adopting the above technical solution, when the power component drives the crank to rotate, the crank drives the slider to slide vertically back and forth in the slide rail through the connecting rod. When the crank rotates once, the slider drives the punch to achieve up and down reciprocating motion once, thereby completing the pressing action of the gasket.

[0018] Preferably, the power component includes a second gear, which is fixed coaxially with the crank and meshes with the incomplete gear after the incomplete gear disengages from the first gear.

[0019] By adopting the above technical solution, when the toothless part of the incomplete gear is opposite to the first gear, the first gear stops rotating, and the conveyor belt stops conveying bottle caps. At this time, the incomplete gear continues to rotate until its toothed part meshes with the second gear. Since the second gear is fixed coaxially with the crank, the incomplete gear drives the second gear to rotate, which in turn drives the crank to rotate. This, in turn, drives the slider and punch downward through the connecting rod, realizing the pressing action of the gasket. After pressing is completed, the incomplete gear continues to rotate until it disengages from the second gear, and the punch returns to its original position under the action of the slider. By utilizing the alternating meshing of the incomplete gear with the first and second gears, the timing coordination of the two actions—the conveyor belt conveying bottle caps and the punch pressing the gasket—is achieved. At the same time, since the two actions are driven by the same incomplete gear, the coordination and synchronization of the actions are ensured, reducing control complexity and equipment costs.

[0020] Preferably, a tension spring is provided inside the slide rail, with the top end of the tension spring fixedly connected to the top wall of the slide rail and the bottom end of the tension spring fixedly connected to the slider, and the tension spring driving the slider to approach the top wall of the slide rail.

[0021] By adopting the above technical solution, the tension spring provides an upward preload to the slider, ensuring that the slider remains close to the top wall of the slide rail when not in operation. When the incomplete gear disengages from the second gear, the tension spring can quickly pull the slider back to its initial position, ensuring that the punch is quickly reset and ready for the next pressing action, thus improving work efficiency.

[0022] Preferably, the rotating assembly includes a first bevel gear and a second bevel gear, wherein the first bevel gear is coaxially fixed with a first meshing roller, and the second bevel gear is coaxially fixed with a dial, and the first bevel gear and the second bevel gear mesh with each other.

[0023] By adopting the above technical solution, when the motor drives the first meshing roller to rotate, the first bevel gear, which is coaxially fixed to the first meshing roller, rotates synchronously. Since the first bevel gear and the second bevel gear mesh with each other, the rotation of the first bevel gear drives the rotation of the second bevel gear, which in turn causes the dial, which is coaxially fixed to the second bevel gear, to rotate. Through the intermittent movement of the first meshing roller, the intermittent movement of the dial is driven, and through the meshing ratio of the first and second bevel gears, the synchronous action of gasket feeding and bottle cap alignment is achieved, improving production efficiency.

[0024] Secondly, the bottle cap provided in this application adopts the following technical solution: it is obtained by processing using any of the bottle cap inner gasket pressing devices described above.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up punches, conveyor belts, positioning grooves, trays, feeding cylinders, dials, rotating components, dial holes, and through holes, the automatic transmission, positioning, and pressing of bottle caps and gaskets are realized, eliminating the need for manual placement, improving production efficiency, and reducing safety hazards; 2. By setting up a first meshing roller, a second meshing roller, a motor, an incomplete gear, and a first gear, the meshing transmission between the synchronous belt and the meshing roller ensures the motion accuracy of the transmission belt. The intermittent motion of the transmission belt is achieved through the cooperation between the incomplete gear and the first gear, which facilitates the control of the start and stop of the transmission belt and makes the bottle cap transportation and pressing actions coordinated. 3. By setting up a slide rail, slider, crank, connecting rod, second gear, and incomplete gear, the crank-slider mechanism converts the rotary motion into the linear pressing motion of the punch. The engagement of the incomplete gear and the second gear drives the punch to move, thus achieving the timing coordination between the conveyor belt conveying and the punch pressing, and ensuring coordinated and synchronous actions.

[0026] 4. By setting the first bevel gear and the second bevel gear, the motion of the transmission belt is converted into the rotation of the dial. The same power source drives the transmission belt and the dial, realizing the synchronous action of gasket feeding and bottle cap alignment, thereby improving production efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a bottle cap inner gasket pressing device provided in the embodiments of this application.

[0028] Figure 2 yes Figure 1 Enlarged view of section A.

[0029] Figure 3 yes Figure 1 Enlarged view of section B.

[0030] Figure 4This is a partial cross-sectional view of a bottle cap inner gasket pressing device at a tray in an embodiment of this application.

[0031] Figure 5 This is a schematic diagram of the structure of a bottle cap inner gasket pressing device in the hidden frame and cap plate state according to an embodiment of this application.

[0032] Figure 6 yes Figure 5 Enlarged view of section C.

[0033] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Reinforcing table; 2. Pressing mechanism; 21. Punch; 22. Sliding assembly; 221. Slide rail; 222. Slider; 223. Crank; 224. Connecting rod; 225. Second gear; 226. Tension spring; 3. Conveying mechanism; 31. Transmission belt; 311. Positioning groove; 32. First meshing roller; 33. Second meshing roller; 34. Motor; 35. Incomplete gear; 36. First gear; 37. Locking rod; 371. Locking tooth; 38. Torsion spring; 39. Cam; 4. Tray; 41. Through hole; 42. Dial; 421. Dial hole; 43. Cover plate; 5. Feeding cylinder; 51. Weight block; 6. Rotating assembly; 61. First bevel gear; 62. Second bevel gear; 71. Bottle cap; 72. Gasket. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] This application discloses a bottle cap inner gasket pressing device. (Refer to...) Figures 1 to 3 The device includes a frame 1, a pressing mechanism 2, and a transport mechanism 3. The frame 1 serves as the basic support structure for the entire device. The pressing mechanism 2 includes a punch 21 that slides vertically and a sliding assembly 22 that drives the punch 21 to slide. The transport mechanism 3 is used to transport the bottle cap 71 directly below the punch 21, and the sliding assembly 22 in the pressing mechanism 2 presses the pad 72 into the bottom of the groove of the bottle cap 71 directly below.

[0036] Reference Figure 1 , Figure 5 and Figure 6 The transport mechanism 3 includes a conveyor belt 31, a first meshing roller 32, a second meshing roller 33, a motor 34, a first gear 36, and an incomplete gear 35. One second meshing roller 33 is rotatably mounted at each end of the frame 1, and the two second meshing rollers 33 are flush in the height direction and have the same diameter. The first meshing roller 32 is rotatably mounted in the middle of the frame 1, and the first meshing roller 32 is lower than the second meshing roller 33. The conveyor belt 31 is a synchronous belt connected end-to-end. The first meshing roller 32 and the two second meshing rollers 33, from the inside of the conveyor belt 31, jointly tighten the conveyor belt 31 and all mesh with it.

[0037] Reference Figure 1 and Figure 6 The motor 34 is fixedly mounted on the frame 1 to drive the first meshing roller 32 to rotate. Specifically, the incomplete gear 35 is coaxially fixed to the drive shaft of the motor 34, and the first gear 36 is coaxially fixed to the first meshing roller 32. The incomplete gear 35 can mesh with the first gear 36. The motor 34 drives the incomplete gear 35 to rotate continuously. When the toothed part of the incomplete gear 35 meshes with the first gear 36, it drives the first gear 36 to rotate, thereby causing the first meshing roller 32 to rotate and driving the transmission belt 31 to move. When the toothless part of the incomplete gear 35 rotates to be opposite the first gear 36, the first gear 36 stops rotating, and the transmission belt 31 also stops moving. In this way, the transmission belt 31 achieves intermittent movement through the meshing and disengagement of the first gear 36 and the incomplete gear 35.

[0038] Reference Figure 1 The outer surface of the conveyor belt 31 is provided with several positioning grooves 311. All positioning grooves 311 are evenly and spaced along the length of the conveyor belt 31. The positioning grooves 311 can be used to place the bottle cap 71. The distance between the positioning grooves 311 is equivalent to the distance of each intermittent movement of the conveyor belt 31.

[0039] Reference Figure 1 and Figure 3 A horizontally positioned tray 4 and a vertically positioned discharge cylinder 5 are fixedly connected to the frame 1. Shims 72 are stacked inside the discharge cylinder 5. A weight 51 is placed inside the discharge cylinder 5 to press down on top of all the shims 72, ensuring the stable downward movement of the shims 72. A cover plate 43 is fixedly installed on the side wall of the discharge cylinder 5, with its lower surface flush with the lower surface of the discharge cylinder 5.

[0040] Reference Figure 3 A dial 42 is rotatably mounted on the upper surface of the tray 4. The lower surface of the dial 42 is in contact with the upper surface of the tray 4. A cover plate 43 covers the top of the dial 42. The cover plate 43 has a notch directly below the punch 21.

[0041] Reference Figure 3 and Figure 6 The frame 1 is equipped with a rotating assembly 6 for intermittently rotating the dial 42. Specifically, the rotating assembly 6 includes a first bevel gear 61 and a second bevel gear 62. The first bevel gear 61 is coaxially fixed to the first meshing roller 32, and the second bevel gear 62 is coaxially fixed to the dial 42. The first bevel gear 61 and the second bevel gear 62 mesh with each other. Under the transmission of the first bevel gear 61 and the second bevel gear 62, the dial 42 rotates and stops simultaneously with the first meshing roller 32, thereby realizing the intermittent rotation of the dial 42.

[0042] Reference Figure 1The dial 42 has a plurality of dial holes 421 extending vertically through it. All dial holes 421 are evenly spaced and spaced along the circumference of the dial 42, and the angle of the intermittent rotation of the dial 42 is approximately equal to the angle of the interval between the dial holes 421. In this embodiment, six dial holes 421 are provided. Any dial hole 421 is vertically aligned with the feed cylinder 5, allowing the pad 72 located at the bottom of the feed cylinder 5 to enter. The tray 4 has a through hole 41 extending vertically through it, located directly below the punch 21. The dial holes 421 and the positioning groove 311 can be simultaneously moved to be vertically aligned with the through hole 41.

[0043] Reference Figures 1 to 3 The sliding assembly 22 includes a slide rail 221, a slider 222, a crank 223, a connecting rod 224, and a power component. The slide rail 221 is fixedly connected to the frame 1. The slider 222 slides vertically within the slide rail 221. The punch 21 is fixed to the bottom of the slider 222. The crank 223 is rotatably connected to the frame 1. One end of the connecting rod 224 is rotatably connected to the end face of the crank 223, and the other end of the connecting rod 224 is rotatably connected to the side wall of the slider 222.

[0044] Reference Figures 1 to 3 The power component includes a second gear 225, which is coaxially fixed with the crank 223. After the incomplete gear 35 disengages from the first gear 36, the second gear 225 meshes with the incomplete gear 35. A tension spring 226 is installed inside the slide rail 221. The top end of the tension spring 226 is fixedly connected to the top wall of the slide rail 221, and the bottom end of the tension spring 226 is fixedly connected to the slider 222. The tension spring 226 drives the slider 222 to move closer to the top wall of the slide rail 221.

[0045] Reference Figures 1 to 3 When the toothless portion of the incomplete gear 35 aligns with the first gear 36, the first gear 36 stops rotating, and the conveyor belt 31 stops conveying the bottle cap 71. At this time, the incomplete gear 35 continues to rotate until its toothed portion meshes with the second gear 225, driving the second gear 225 to rotate, which in turn drives the crank 223 to rotate. This, through the connecting rod 224, causes the slider 222 and the punch 21 to move downwards, thus achieving the pressing action on the gasket 72. After the pressing is completed, the incomplete gear 35 continues to rotate until it disengages from the second gear 225, and the punch 21, under the action of the tension spring 226, returns to its original position upwards with the slider 222.

[0046] Reference Figure 1 and Figure 6 In addition, a reinforcing platform 11 is fixedly installed on the frame 1. The reinforcing platform 11 is located directly below the punch 21. The upper surface of the reinforcing platform 11 abuts against the inner side of the top of the conveyor belt 31. It is used to provide support for the conveyor belt 31 and the bottle cap 71 on the conveyor belt 31 when the punch 21 presses down, so as to improve the stability of the pressing process.

[0047] To prevent the first gear 36 from rotating accidentally after the incomplete gear 35 disengages from the first gear 36, refer to... Figure 2 and Figure 6 A locking rod 37 is rotatably mounted on the frame 1, and a locking tooth 371 is fixedly mounted on the locking rod 37. The locking tooth 371 can be inserted into the tooth groove of the first gear 36. A torsion spring 38 is provided at the rotatable connection between the locking rod 37 and the frame 1, and the torsion spring 38 drives the locking rod 37 to approach the first gear 36. The frame 1 is also provided with an unlocking component. In this embodiment, the unlocking component is a cam 39 coaxially fixed with the incomplete gear 35, and the cam 39 abuts against the locking rod 37. When the toothless part of the incomplete gear 35 rotates to be opposite the first gear 36 and the transmission belt 31 stops moving, the torsion spring 38 drives the locking rod 37 to rotate, so that the locking tooth 371 is inserted into the tooth groove of the first gear 36, locking the first gear 36. Before the toothed part of the incomplete gear 35 meshes with the first gear 36 again, the protruding part of the cam 39 abuts against the locking rod 37, overcoming the elastic force of the torsion spring 38, driving the locking rod 37 to rotate, causing the locking tooth 371 to disengage from the tooth groove of the first gear 36, thus releasing the lock on the first gear 36.

[0048] The implementation principle of the bottle cap inner gasket pressing device in this application embodiment is as follows: Bottle caps 71 are placed sequentially in the positioning groove 311 of the conveyor belt 31 by manual operation or by a feeding device. The motor 34 drives the conveyor belt 31 to move intermittently through the meshing of the incomplete gear 35 and the first gear 36, conveying the bottle caps 71 sequentially to the area directly below the punch 21. At the same time, the rotation of the first meshing roller 32 drives the dial 42 to rotate intermittently through the first bevel gear 61 and the second bevel gear 62. Since the gasket 72 falls into the dial 421 when the dial hole 421 is vertically aligned with the feeding cylinder 5, after the dial 42 rotates intermittently, the dial hole 421 containing the gasket 72 rotates to be vertically aligned with the through hole 41, at which point the bottle cap 71, gasket 72, and punch 21 are located in the same vertical direction. Next, the incomplete gear 35 meshes with the second gear 225, driving the crank 223 to rotate. This, via the connecting rod 224, causes the punch 21 to move downwards, smoothly pressing the gasket 72 into the groove of the bottle cap 71. After pressing, the incomplete gear 35 disengages from the second gear 225, and the punch 21 returns to its original position under the action of the tension spring 226, ready for the next pressing. This facilitates the automatic alignment of the gasket 72 and the bottle cap 71, improving production efficiency and reducing safety hazards.

[0049] This application also discloses a bottle cap 71, which is processed using the above-mentioned bottle cap inner gasket pressing device: a gasket 72 is pressed into the groove of the bottle cap 71, and the gasket 72 is installed into the bottle cap 71 by the above-mentioned pressing device, which ensures the installation accuracy and sealing of the gasket 72 in the groove of the bottle cap 71 body.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bottle cap and its inner gasket pressing device, comprising a frame (1) and a pressing mechanism (2), wherein the pressing mechanism (2) comprises a punch (21) that slides vertically and a sliding assembly (22) that drives the punch (21) to slide, characterized in that: The frame (1) is provided with a transport mechanism (3), which includes a transmission belt (31) that moves intermittently. The outer surface of the transmission belt (31) is provided with a plurality of positioning grooves (311). All the positioning grooves (311) are evenly and spaced apart along the length of the transmission belt (31). The positioning grooves (311) can be used to place bottle caps (71). The frame (1) is fixedly connected with a horizontally arranged tray (4) and a vertically arranged feeding cylinder (5). Gaskets (72) are stacked inside the feeding cylinder (5). A dial (42) is rotatably arranged on the upper surface of the tray (4). The frame (1) is provided with a mechanism for driving the dial (42) to rotate intermittently. The rotating assembly (6) has a dial (42) whose upper surface can block the bottom of the discharge cylinder (5); the dial (42) has a plurality of dial holes (421) through it in the vertical direction, all of which are evenly and spaced apart in the circumferential direction of the dial (42), and any dial hole (421) is directly opposite the discharge cylinder (5) in the vertical direction, allowing the pad (72) at the bottom of the discharge cylinder (5) to enter; the tray (4) has a through hole (41) through it in the vertical direction, which is located directly below the punch (21), and the dial hole (421) and the positioning groove (311) can be moved simultaneously to be aligned with the through hole (41) in the vertical direction.

2. The bottle cap and its inner gasket pressing device according to claim 1, characterized in that: The transmission belt (31) is a synchronous belt. The transport mechanism (3) also includes a first meshing roller (32), a second meshing roller (33), and a motor (34). There is one second meshing roller (33) rotating at each end of the frame (1). The first meshing roller (32) rotates in the middle of the frame (1). The first meshing roller (32) and the two second meshing rollers (33) together tighten the transmission belt (31) and mesh with the transmission belt (31). The motor (34) is fixed on the frame (1) and is used to drive the first meshing roller (32) to rotate.

3. The bottle cap and its inner gasket pressing device according to claim 2, characterized in that: The transport mechanism (3) also includes an incomplete gear (35) and a first gear (36). The first gear (36) is coaxially fixed with the first meshing roller (32). The incomplete gear (35) is coaxially fixed with the drive shaft of the motor (34). The incomplete gear (35) can mesh with the first gear (36).

4. The bottle cap and its inner gasket pressing device according to claim 3, characterized in that: A locking rod (37) is rotatably mounted on the frame (1), and a locking tooth (371) is fixedly mounted on the locking rod (37). The locking tooth (371) can be inserted into the tooth groove of the first gear (36). A torsion spring (38) is provided at the rotatable connection between the locking rod (37) and the frame (1). The torsion spring (38) drives the locking rod (37) to approach the first gear (36). An unlocking component is also provided on the frame (1). The unlocking component is used to drive the locking rod (37) away from the first gear (36).

5. The bottle cap and its inner gasket pressing device according to claim 4, characterized in that: The unlocking component includes a cam (39), which is coaxially fixed with the incomplete gear (35) and abuts against the locking rod (37).

6. The bottle cap and its inner gasket pressing device according to claim 3, characterized in that: The sliding assembly (22) includes a slide rail (221), a slider (222), a crank (223), a connecting rod (224), and a power component. The slide rail (221) is fixedly connected to the frame (1). The slider (222) slides vertically within the slide rail (221). The punch (21) is fixed to the bottom of the slider (222). The crank (223) is rotatably connected to the frame (1). One end of the connecting rod (224) is rotatably connected to the end face of the crank (223). The other end of the connecting rod (224) is rotatably connected to the slider (222). The power component is used to drive the crank (223) to rotate.

7. The bottle cap and its inner gasket pressing device according to claim 6, characterized in that: The power component includes a second gear (225), which is coaxially fixed with the crank (223). When the incomplete gear (35) disengages from the first gear (36), the second gear (225) meshes with the incomplete gear (35).

8. The bottle cap and its inner gasket pressing device according to claim 6, characterized in that: A tension spring (226) is provided inside the slide rail (221). The top end of the tension spring (226) is fixedly connected to the top wall of the slide rail (221), and the bottom end of the tension spring (226) is fixedly connected to the slider (222). The tension spring (226) drives the slider (222) to approach the top wall of the slide rail (221).

9. The bottle cap and its inner gasket pressing device according to claim 2, characterized in that: The rotating assembly (6) includes a first bevel gear (61) and a second bevel gear (62). The first bevel gear (61) is coaxially fixed with the first meshing roller (32), and the second bevel gear (62) is coaxially fixed with the dial (42). The first bevel gear (61) and the second bevel gear (62) mesh with each other.

10. A bottle cap, characterized in that: It is obtained by using a bottle cap and its inner gasket pressing device as described in any one of claims 1-9.

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