4results about How to "Shorten pause time" patented technology

The utility model discloses a kind of edge material collecting devices of stainless steel band trimming machine, comprising: winding mechanism, including expansion shaft and first driving part, first driving part is used to drive expansion shaft rotation, to realize expansion shaft to edge material winding, expansion shaft is vertically arranged, the radial outer surface of expansion shaft can be outwardly spread or inwardly contract, so that expansion shaft supports or unloads edge material roll;Unwinding mechanism, including rotating plate and lifting assembly, rotating plate is rotationally connected to lifting assembly, and with expansion shaft coaxial, lifting assembly drives rotating plate to be close to or away from the bottom end of expansion shaft, when the radial outer surface of expansion shaft is outwardly spread, rotating plate is close to the bottom end of expansion shaft, so that rotating plate and expansion shaft cooperate to prevent edge material from falling, when the radial outer surface of expansion shaft is contracted, rotating plate is away from the bottom end of expansion shaft, so that rotating plate drives edge material roll to be separated from expansion shaft.The utility model can realize automatic unwinding, improve the security of unwinding.

The embodiment of the invention provides a kernel upgrading method and device, a computer program product and a storage medium. The isolation core is provided in the host machine, and after the kernel upgrading instruction is generated, the isolation core can start the new kernel, so that the original kernel and the new kernel can run at the same time in the host machine through different physical cores. In the starting period of the new kernel, the virtualization instance in the host machine can normally run on the original kernel and is not interfered. After the new kernel is started, the virtualization instance running on the original kernel in the host machine can be migrated to the new kernel, and the virtualization instance continues to run on the basis of the new kernel. Therefore, kernel upgrading can be realized under the condition that the host machine does not need to be restarted in a cold mode; in the kernel upgrading period, the pause time of the virtualization instance mainly comprises migration time consumption of the virtualization instance between the kernels and does not comprise starting time consumption of a new kernel, and therefore the pause time, caused by kernel upgrading, of the virtualization instance can be effectively shortened.

This invention discloses a method and apparatus for scheduling stream processing tasks. The method includes: receiving a task migration request initiated by a user; determining the task migration trigger time and task migration strategy based on the task migration request; acquiring each computing resource node involved in the task migration and controlling the coordinator responsible for task migration to schedule each computing resource node according to the task migration time and task migration strategy to execute the task migration; injecting a special delimiter event into the data stream of the stream processing job during the task migration process; using the special delimiter event to disconnect the task to be migrated from all its upstream and downstream tasks; and simultaneously deploying the task to be migrated to the computing resource node where the task needs to be migrated. This method can achieve the scheduling of stream processing tasks, solving the problems of long-term pauses in data stream processing caused by restarting jobs in existing technologies, resulting in significant performance fluctuations and instability.

The utility model discloses an automatic switching film sleeving structure for double film rolls, which relates to the technical field of packaging and comprises a worktable, a plurality of supporting legs are arranged at the bottom of the worktable, a mounting seat is fixedly connected to the top of the worktable, a base is fixedly erected and mounted at the top of the worktable, a conveying belt is mounted in the base, and the conveying belt is driven by a driving motor. The double-film-roll film changing mechanism comprises a rotating seat, a first motor, an unwinding roller, a second motor, a slope table and a first mounting frame, a rotating shaft is arranged on one side of the rotating seat, the rotating shaft penetrates through the mounting seat and is rotationally connected with the mounting seat, and the first motor is fixedly mounted on one side of the mounting seat through a mounting part. The output end of the first motor is connected with the shaft end of the rotating shaft. According to the utility model, different membrane materials can be quickly and conveniently replaced, so that the working pause time of equipment can be greatly shortened, the production and processing efficiency of products is effectively improved, and the practicability is higher.