Core-withdrawing overturning type plastic film blowing mechanism and core withdrawing method thereof
A plastic film flipping technology, which is applied in the core-removing flip-type plastic film blowing mechanism and its core-removing field, can solve the problem of inflexibility in use, inability to control the output of film melting materials well, and the inability to reasonably control the film Specifications and other issues, to achieve the effect of smooth and convenient separation
Pending Publication Date: 2021-12-31
JIANGSU ZHONGDA PACKING MATERIAL CO LTD
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Problems solved by technology
[0002] In the prior art, when producing a film, the plastic particles are first melted by a film blowing machine, and then the molten material is heated up to the most suitable temperature required for film blowing, and the molten material overflows from the annular interlayer evenly, and is reused The gas evenly blown from the inside of the annular interlayer blows the molten material into a plastic film; however, the existing mold core is generally built-in and connected to the inside of the annular mold shell, and it will be very inconvenient when the mold core needs to be disassembled and cleaned. , In addition, the existing film cannot control the output of the film molten material well when blowing the film, so the specification of the film cannot be reasonably controlled, and the use is not flexible
Method used
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[0023] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0024] Such as Figures 1 to 6 As shown, a core-removing flip-type plastic film blowing mechanism includes an annular mold shell 1, a retreating mold core 2, and a retreating drive mechanism 3; the retreating mold core 2 is installed inside the annular mold shell 1; An annular overflow cavity 22 is formed between the outer sides of the retreating mold core 2 and the inner sides of the annular formwork 1; a sealing ring 15 is provided around the lower end of the annular formwork 1; The inner side abuts or is separated from the lower end of the retreating mold core 2; the retreating drive mechanism 3 is installed under the annular formwork 1 and the retreating mold core 2; the retreating driving mechanism 3 drives the retreating mold core 2 from The inside of the annular formwork 1 moves downwards and breaks away from the annular formwork 1, and...
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The invention discloses a core-withdrawing overturning type plastic film blowing mechanism and a core withdrawing method of the core-withdrawing overturning type plastic film blowing mechanism. The core-withdrawing overturning type plastic film blowing mechanism comprises an annular mold shell, a withdrawing type mold core and a withdrawing driving mechanism. The withdrawing type mold core of the core-withdrawing overturning type plastic film blowing mechanism descends, rotates reversely and then conducts core withdrawal, rapid core withdrawal can be achieved, and therefore the withdrawing type mold core cannot be blocked by the annular mold shell when rotating upwards to withdraw, and separation is smooth and convenient.
Description
technical field [0001] The invention relates to a core-removing flip-type plastic film blowing mechanism and a core-removing method. Background technique [0002] In the prior art, when producing a film, the plastic particles are first melted by a film blowing machine, and then the molten material is heated up to the most suitable temperature required for film blowing, and the molten material overflows from the annular interlayer evenly, and is reused The gas evenly blown from the inside of the annular interlayer blows the molten material into a plastic film; however, the existing mold core is generally built-in and connected to the inside of the annular mold shell, and it will be very inconvenient when the mold core needs to be disassembled and cleaned. In addition, the existing film cannot well control the output of the film molten material when blowing the film, so the specification of the film cannot be reasonably controlled, and the use is not flexible. Contents of th...
Claims
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IPC IPC(8): B29C55/28B29C33/30
CPCB29C55/28B29C33/306B29C33/308
Inventor 张玉青
Owner JIANGSU ZHONGDA PACKING MATERIAL CO LTD