Automatic forming device for bendable plastic straw

Abstract

The invention discloses an automatic forming device for a bendable plastic straw. The automatic forming device comprises a rack, wherein a working face is arranged on the rack, a hopper assembly usedfor feeding and a material collecting assembly used for collecting materials are arranged at two ends of the rack correspondingly, a material taking assembly used for taking materials is arranged on the rack, a material collecting hopper is connected to the material collecting assembly, a guide rail assembly is arranged on the working face, the guide rail assembly extends in the direction of a connecting line between the hopper assembly and the material collecting assembly, a molding assembly used for molding a bent pipe is arranged on the guide rail assembly, and the molding assembly is located between the hopper assembly and the material collecting assembly and can mold the bent pipe while doing reciprocating motion between the hopper assembly and the material collecting assembly. According to the device, straw bulges are reduced, loss of molding needles is reduced, molding parameters can be rapidly adjusted for the straws with different pipe diameters, and the yield of products is increased.

Description

technical field [0001] The invention relates to the technical field of straws, in particular to an automatic forming device for plastic bendable straws. Background technique [0002] At present, in practical application, the forming and manufacturing equipment of the elbow adopts the form of forming wheel + forming needle (curve when the needle acts) or forming plate + forming needle (straight line when the needle acts). The former has strong forming ability and low needle loss, but because the linear speed of the forming wheel and the rotating linear speed of the forming needle need to match, the speed cannot be increased blindly, otherwise it is prone to rotten teeth, resulting in low output; the latter has high output, but due to the forming The plate is directly pressed on the forming needle, there is no support under the forming needle, and the forming needle will be deformed every time. The forming needle is easy to break due to metal fatigue, and the loss is high. In ...

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Problems solved by technology

The former has strong forming ability and low needle loss, but because the linear speed of the forming wheel and the rotating linear speed of the forming needle need to match, the speed cannot be increased blindly, otherwise it is prone to rotten teeth, resulting in low output; the latter has high output, but due to the forming The plate is directly pressed on the forming needle, there is no support under the forming needle, and the forming needle will be deformed every time. The forming needle is easy to break due to metal fatigue, and the loss is high. In order to achieve a good forming effect, it is necessary to increase the pressure of the forming plate. After the pipe body is under pressure, great friction will occur with the pipe support seat, resulting in the deformation and swelling of the pipe body

The current common equipment cannot solve the above problems well.

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