Three-way necking machine

Abstract

The invention discloses a three-way necking machine. The three-way necking machine structurally comprises a workbench, a power distribution box, a feeder, a necking device, an oil cylinder and an oilpipe. When necking is performed on a three-way pipe, the three-way pipe is horizontally placed on the feeder, the power distribution box is controlled to start the feeder so that the three-way pipe ishorizontally conveyed to the necking device, the pipe is moved towards the interior of a necking pipe to be in tight fit with a buffer device, the three-way pipe is driven to slowly and horizontallyenter the necking pipe, during necking, a stretchable ring is retracted along with the interior of the pipe, the interior of the pipe is buffered, burst caused by sudden necking is avoided, due to thebuffer device, the phenomena that due to the high conveying speed, the surface of the pipe collides with a stop plate inside the device for a long time, the stop plate is sunken, the distance betweenthe stop plate and the necking is enlarged, and the size needed by the butt-joint technology cannot be met are avoided, due to a strip-off device, plated painting remaining on the surface of a silicagel plate is stripped off, and the phenomenon that the buffer effect cannot be achieved due to the fact that elasticity of the silica gel plate is affected when the thickness of the surface of the silica gel plate is increased by long-term stacking is avoided.

Description

technical field [0001] The invention belongs to the field of necking machines, and more specifically, relates to a three-way necking machine. Background technique [0002] The shrinking machine is used to shrink the larger diameter pipe to the size required for the docking process with the thinner pipe when connecting pipes with different diameters. The tee is used to change the direction of the fluid and is used at the branch pipe of the main pipe. Due to the large diameter of the tee, it is necessary to shrink the tee in order to ensure that it can be docked; in the prior art, the necking machine uses a conveying device to send the pipe into the necking device for shrinking, and the conveying speed is fast between the surface of the pipe and the inside of the device. The long-term collision of the baffle plate makes the baffle plate sag and deepens the distance from the baffle plate to the necking, which cannot reach the size required by the docking process. Contents of ...

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Problems solved by technology

[0002] The shrinking machine is used to shrink the larger diameter pipe to the size required for the docking process with the thinner pipe when connecting pipes with different diameters. The tee is used to change the direction of the fluid and is used at the branch pipe of the main pipe. Due to the large diameter of the tee, it is necessary to shrink the tee in order to ensure that it can be docked; in the prior art, the necking machine uses a conveying device to send the pipe into the necking device for shrinking, and the conveying speed is fast between the surface of the pipe and the inside of the device. The long-term collision of the blocking plate will cause the blocking plate to sag, and the distance between the blocking plate and the necking will be deepened, which cannot reach the size required by the docking process.

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