A bottle cap screwing apparatus
By incorporating a reverse friction block and a bottle holder with opposite rotation direction into the bottle cap screwing device, the problem of damage caused by misalignment between the bottle cap and the bottle neck threads is solved, enabling fast and effective bottle cap screwing and ensuring a sealing effect.
CN118929538BActive Publication Date: 2026-06-02LANGFANG DAHAO PACKAGING MASCH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- LANGFANG DAHAO PACKAGING MASCH CO LTD
- Filing Date
- 2024-08-30
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
In existing capping machines, the threads of the cap and bottle opening are not aligned during the screwing process when the robotic arm descends, causing damage to the threads and affecting the sealing effect.
Method used
A bottle cap screwing device was designed. By setting a reverse friction block on the bottle holder, the bottle holder rotates in the second rotation direction. Combined with the first rotation direction of the screwing mechanism, the rotation directions of the bottle body and the bottle cap are opposite, ensuring that the threads are aligned and screwed on.
Benefits of technology
This avoids damage to the threads of the bottle cap and bottle neck during the screwing process, enabling quick and effective cap screwing and ensuring a tight seal.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN118929538B_ABST
Abstract
This application provides a bottle cap screwing device, including a frame with a cam and a fixing ring at the top. The cam has a guide groove on its outer periphery, and the fixing ring has an internal gear ring on its inner wall. A main shaft is rotatably connected between the cam and the bottom of the frame. The main shaft can rotate in a first rotation direction and is fitted with a rotating body and a rotating support. Multiple screwing mechanisms are circumferentially mounted on the rotating body. The top of each screwing mechanism slides in cooperation with the guide groove, and the bottom has a gripping part. A transmission gear is mounted on each screwing mechanism and can be connected to the internal gear ring through a transition gear. Multiple bottle holders are circumferentially rotatably connected to the rotating support. A limiting mechanism is also provided to fix the bottle body and the bottle holders relatively. A reverse friction block is provided on one side of each bottle holder, which allows the bottle holder to roll into contact with the main shaft when rotating around it. By providing a reverse friction block on one side of each bottle holder, the bottle holder rotates in a second rotation direction. During screwing, the bottle body and the bottle cap, rotating in opposite directions, can rotate and engage quickly, avoiding damage to the threads.
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