A plastic bottle cap device and a cap screwing machine

Abstract

The application relates to a plastic bottle cap mounting device and a cap screwing machine, and relates to the technical field of plastic bottle assembly. The plastic bottle cap mounting device comprises a cap arranging barrel, a cap arranging disc, a transfer box and a material pushing structure. The cap arranging barrel is arranged obliquely and is provided with a discharge opening for discharging bottle caps. The cap arranging disc is rotationally arranged in the cap arranging barrel. A plurality of limiting grooves are arranged on the top surface of the cap arranging disc and surround the cap arranging disc. The transfer box is located in the center of the limiting grooves and is in clearance fit with the cap arranging barrel. An output opening is arranged on the side wall of the transfer box. The material pushing structure is rotationally arranged in the transfer box. When the material pushing structure rotates, the bottle caps are pushed out of the output opening and onto the cap arranging disc. The application realizes orderly flow control of the bottle caps through cooperation of the transfer box and the material pushing structure, so that the accumulation and blockage caused by the concentrated inflow of the bottle caps and the impact on the equipment are avoided.

Description

Technical Field

[0001] This application relates to the field of plastic bottle assembly technology, and in particular to a plastic bottle capping device and capping machine. Background Technology

[0002] Currently, capping machines are indispensable equipment in automated packaging production lines in industries such as food, beverage, and pharmaceuticals. Before the capping machine starts working, the messy plastic bottle caps need to be arranged into a uniform orientation by the capping device (also known as the cap sorting device) so that the robotic arm can accurately grasp and cap them.

[0003] Existing capping devices mostly adopt vibratory disc or rotary cap sorting disc structures. Their working mode is usually to pour a large number of bottle caps into a hopper or cap sorting bin at once. The bottle caps fall randomly into the track or limiting groove of the cap sorting disc by gravity or vibration, and then the wrongly oriented bottle caps are removed by mechanical structure or pneumatic device.

[0004] However, this method of feeding and covering has obvious drawbacks: First, pouring in a large number of bottle caps at once can easily cause accumulation and blockage above the cap sorting tray and at the discharge port, preventing the bottle caps from smoothly entering the cap sorting track, or even blocking the discharge channel, which seriously affects production efficiency. Secondly, the sudden influx of bottle caps will cause a surge in load on the cap feeding disc drive motor, leading to unstable operating conditions and accelerated equipment wear. Utility Model Content

[0005] This application provides a plastic bottle capping device and a capping machine to address the deficiencies in the prior art.

[0006] Firstly, the plastic bottle cap device provided in this application adopts the following technical solution: A plastic bottle cap device, comprising: The bottle cap container is tilted and has a discharge port for dispensing bottle caps. A lid-scraping tray is rotatably mounted inside the lid-scraping barrel, and a plurality of limiting grooves are provided on the top surface of the lid-scraping tray, which surround the lid-scraping tray. The transfer box is located in the center of the plurality of limiting grooves, and its bottom is in clearance fit with the lid bucket. An output port is provided on the side wall of the transfer box. The feeding structure is rotatably disposed inside the transfer box. When the feeding structure rotates, it pushes the bottle cap from the output port onto the cap sorting tray.

[0007] Furthermore, the feeding structure includes an eccentric wheel rotatably mounted on the bottom wall of the transfer box, which pushes the bottle cap from the output port onto the cap feeding plate when the eccentric wheel is in the lift section toward the output port.

[0008] Furthermore, the eccentric wheel is provided with a conical guide portion.

[0009] Furthermore, a flexible protective layer is provided around the sidewall of the eccentric wheel and / or the conical guide portion.

[0010] Furthermore, the feeding structure also includes a feeding rod, which is reciprocatingly mounted on the side wall of the transfer box, with the output end of the feeding rod facing the output port.

[0011] Furthermore, a protective plate is fixed inside the transfer box, and the protective plate covers the material feeding rod.

[0012] Furthermore, it also includes a drive structure, wherein the eccentric wheel is coaxially arranged with the cover plate, and the drive structure is connected to the eccentric wheel and the cover plate respectively for transmission.

[0013] Furthermore, it also includes a baffle, which is rotatably and repositioned at the discharge port via a torsion spring.

[0014] Furthermore, the transit box is configured such that the flow area gradually decreases from its top to its bottom.

[0015] Secondly, this application provides a capping machine, which includes a conveying device, a capping device, and the aforementioned plastic bottle capping device.

[0016] In summary, this application includes at least one of the following beneficial technical effects: This application achieves orderly flow control of bottle caps through the cooperation of the transfer box and the feeding structure, avoiding the accumulation and blockage caused by the concentrated influx of bottle caps and the impact on the equipment. It has the advantages of improving the reliability of continuous operation of the device and extending the service life of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the plastic bottle cap device.

[0018] Figure 2 This is a cross-sectional structural diagram of the plastic bottle cap device.

[0019] In the diagram, 100 is the lid-collecting bucket; 110 is the discharge port; 200 is the lid-collecting plate; 210 is the limiting groove; 300 is the transfer box; 310 is the output port; 400 is the feeding structure; 410 is the eccentric wheel; 420 is the feeding rod; 500 is the guide part; 600 is the flexible protective layer; 700 is the protective plate; 800 is the drive structure; and 900 is the baffle. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1 -Appendix Figure 2This application will be described in further detail below.

[0021] A plastic bottle cap device, as shown in the reference Figure 1 and Figure 2 The system includes a lid-collecting bucket 100, a lid-collecting plate 200, and a drive structure 800. The lid-collecting bucket 100 is inclined and has a discharge port 110. The lid-collecting plate 200 is rotatably connected inside the lid-collecting bucket 100. The drive structure 800 is connected to the lid-collecting plate 200 to drive the lid-collecting plate 200 to rotate. Multiple limiting grooves 210 are formed on the top surface of the lid-collecting plate 200, and the multiple limiting grooves 210 are arranged around the lid-collecting plate 200.

[0022] The inclined setting of the cap sorting tank 100 results in an upper position and a lower position. During the cap sorting process, the bottle caps will accumulate at the lower position under their own weight. As the cap sorting disc 200 rotates, some bottle caps will enter the limiting groove 210 and finally be discharged from the discharge port 110 (located at the lower position). After discharge, the bottle caps are processed and then put on the plastic bottle.

[0023] Furthermore, the top cover device also includes a transfer box 300 and a material feeding structure 400. The transfer box 300 is fixed inside the lid feeding barrel 100. The transfer box 300 is located in the center of multiple limiting grooves 210, and its bottom is in clearance fit with the lid feeding barrel 100. An output port 310 is provided on the side wall of the transfer box 300. The material feeding structure 400 is rotatably disposed inside the transfer box 300.

[0024] During the feeding process, bottle caps are first poured into the transfer box 300, instead of directly onto the cap tray 200. The bottle caps in the transfer box 300 are then pushed out one by one from the output port 310 onto the cap tray 200 via the feeding mechanism 400. The transfer box 300 has a gradually decreasing flow area from top to bottom, meaning it is cone-shaped to guide the bottle caps during the feeding process.

[0025] After the bottle caps are fed into the transfer box 300, the output port 310 on the side wall of the transfer box 300 provides a directional flow channel for the bottle caps, ensuring that the bottle caps only enter the cap sorting tray 200 area through the designated path. Through the coordination of the transfer box 300 and the feeding structure 400, the controllable flow and orderly supply of bottle caps are ensured, avoiding the problem of bottle caps accumulating and congesting at the discharge port 110. At the same time, it reduces the phenomenon of a surge in load on the drive motor of the cap sorting tray 200 due to the concentrated influx of bottle caps, thereby improving the stability of equipment operation.

[0026] Furthermore, the specific position of the output port 310 is set according to the rotation direction of the cover plate 200.

[0027] For example, when the cap feeder 200 rotates clockwise, the output port 310 is located above the discharge port 110 while being away from the discharge port 110, so that the pushed-out bottle caps are further carried away from the output port 310 under the rotation of the cap feeder 200, so as to prevent bottle caps from accumulating at the output port 310.

[0028] For example, when the cap feeder 200 rotates counterclockwise, the output port 310 is located below the discharge port 110 while being close to it, so that the pushed-out bottle caps are further carried away from the output port 310 by the rotation of the cap feeder 200, thereby preventing bottle caps from accumulating at the output port 310.

[0029] Based on this, a baffle 900 is installed at the discharge port 110 to close the discharge port 110.

[0030] Specifically, the baffle 900 is rotatably mounted at the outlet 110 via a torsion spring. When the dispensing structure 400 has not pushed out the bottle cap, it closes the outlet 110 to reduce the possibility of the bottle cap sliding out directly from the outlet 110 due to its own weight without being pushed by the dispensing structure 400. When the dispensing structure 400 pushes out the bottle cap, the baffle 900 rotates under the pushing force of the dispensing structure 400, causing the outlet 110 to open, allowing the bottle cap to be smoothly pushed out.

[0031] Reference Figure 1 The feeding structure 400 includes an eccentric wheel 410, which is rotatably mounted on the bottom wall of the transfer box 300. The eccentric wheel 410 has a lifting section and a return section (i.e., the long diameter section and the short diameter section of the eccentric wheel 410 respectively). When the lifting section of the eccentric wheel 410 faces the output port 310, it pushes the bottle cap from the output port 310 to the cap feeding tray 200.

[0032] The eccentric wheel 410 can be configured as a cam, an elliptical wheel, or other structures with periodic geometric changes, depending on the specific circumstances. For example, the eccentric wheel 410 is configured as a cam.

[0033] Furthermore, a tapered guide portion 500 is provided on the eccentric wheel 410.

[0034] When the bottle cap is poured into the transfer box 300, the conical guide 500 can guide the bottle cap so that the bottle cap is located on the periphery of the eccentric wheel 410 after entering the transfer box 300, so as to ensure that the eccentric wheel 410 can push the bottle cap well, while preventing the bottle cap from accumulating on the top of the eccentric wheel 410 and causing the eccentric wheel 410 to be overloaded.

[0035] In addition, a flexible protective layer 600 is provided around the side wall of the eccentric wheel 410 and / or the conical guide portion 500 to reduce collisions when the bottle cap enters the transfer box 300 and is pushed by the eccentric wheel 410, thus providing good protection for both the device and the bottle cap.

[0036] For example, both the eccentric wheel 410 and the conical guide portion 500 are provided with a flexible protective layer 600.

[0037] Meanwhile, given that both the cover plate 200 and the eccentric wheel 410 need to rotate periodically, in one specific embodiment, the eccentric wheel 410 and the cover plate 200 operate independently. In this case, two drive structures 800 are correspondingly provided to drive the eccentric wheel 410 and the cover plate 200 one-to-one. In another specific embodiment, the eccentric wheel 410 and the cover plate 200 are coaxially arranged, and the drive structures 800 are respectively connected to the eccentric wheel 410 and the cover plate 200 for transmission.

[0038] Furthermore, referring to Figure 1 The feeding structure 400 also includes a feeding rod 420, which is reciprocally mounted on the side wall of the transfer box 300, with the output end of the feeding rod 420 facing the output port 310.

[0039] Specifically, the feeding rod 420 is a mechanical component that can push bottle caps through reciprocating rotation. It can be implemented using a crank-connecting rod mechanism, a cam drive mechanism, or a direct-drive motor. The output end of the feeding rod 420 is the part that directly acts on the bottle cap during its movement.

[0040] When the eccentric wheel 410 pushes the bottle cap to the vicinity of the output port 310, because the eccentric wheel 410 provides circumferential pushing force, there may be cases in some rotation cycles where the eccentric wheel 410 fails to successfully push the bottle cap out of the output port 310 (for example, some bottle caps will pile up or bounce along the axial direction of the eccentric wheel 410 after being pushed). The feeding rod 420 further cooperates with the eccentric wheel 410 to ensure that the bottle cap can be smoothly pushed out of the output port 310 onto the cap feeding tray 200, thereby ensuring the continuity and stability of the cap feeding process.

[0041] It should be noted that when the eccentric wheel 410 moves towards the output port 310 during its lift phase, the feed rod 420 also begins to move towards the output port 310; the movements of the two are independent and smooth. It should also be noted that... Figure 2 When the device is in the off state, the feeding rod 420 is close to the inner wall of the transfer box 300. When the device is in the working state, the feeding rod 420 will pull out the bottle cap when it is in this position.

[0042] Based on this, refer to Figure 1The transfer box 300 is equipped with a protective plate 700, which covers the material feeding rod 420.

[0043] When several bottle caps are poured into the transfer box 300, the protective plate 700 will protect the feeding rod 420, which can prevent the bottle caps from directly hitting the feeding rod 420, thus ensuring that the feeding rod 420 can operate normally.

[0044] For example, the inner ring of the protective plate 700 can be set as an arc surface / sloping surface. When the bottle cap is poured into the transfer box 300, some of the bottle caps that are intercepted on the protective plate 700 can fall smoothly into the transfer box 300 under the further guidance of the arc surface / sloping surface.

[0045] In addition, this application also discloses a capping machine, including a conveying device, a capping device, and the aforementioned cap sorting and detection device. After the bottle caps are sorted in the cap sorting and detection device, they are conveyed to the capping structure via the conveying structure, where the capping structure installs the bottle caps onto the container bottle and performs the capping process.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A plastic bottle cap device, characterized by, The application relates to a cap sorting device. The application relates to a cap sorting device. The application relates to a cap sorting device. The application relates to a cap sorting device. The application relates to a cap sorting device.

2. A plastic bottle cap device according to claim 1, characterized in that The application relates to a cap sorting device.

3. A plastic bottle closure device according to claim 2, wherein The application relates to a cap sorting device.

4. A plastic bottle closure device as defined in claim 3, wherein The application relates to a cap sorting device.

5. The cap assembly of claim 2, wherein the cap assembly further comprises a cap ring disposed between the cap and the cap base. The application relates to a cap sorting device.

6. A plastic bottle closure device as defined in claim 5, wherein, The application relates to a cap sorting device.

7. A plastic bottle closure device as defined in claim 2 wherein, The application relates to a cap sorting device.

8. The cap assembly of claim 1, wherein the cap assembly is made of plastic. The application relates to a cap sorting device.

9. The cap assembly of claim 1, wherein the cap assembly is made of plastic. The application relates a cap sorting device.

10. A cap screwing machine characterized by comprising: The application relates to a cap sorting device. The application relates to a plastic bottle cap sorting device.

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