Non PVC film welding mould

A technology for welding molds and mold bodies, which is applied to paper/cardboard containers, container manufacturing machinery, and box production operations, etc. It can solve the problems affecting the appearance of the bag shape and the surrounding welding strength, inaccurate temperature control of the mold working surface, and the time required for the mold. Long and other problems, to achieve the effect of fast and convenient replacement and adjustment, direct and accurate temperature detection feedback, and high production efficiency

Active Publication Date: 2006-11-29
SHINVA MEDICAL INSTR CO LTD
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Problems solved by technology

[0003] However, due to the plate-to-plate contact heat transfer between the heating plate and the mold, there is inevitably a large amount of heat loss in the middle, and the electric heating rod and thermocouple are installed on the heating plate, so that the actual control It is the temperature inside the heating plate rather than the temperature of the working surface of the mold, which not only causes a lot of heat loss and wastes energy, but also easily leads to inaccurate temperature control of the working surface of the mold, affecting the appearance of the bag shape and the surrounding welding strength, directly affecting to the pass rate of the product
Moreover, this kind of mold requires high flatness and parallelism during the working process. When the three mold specifications (100ml, 250ml, 500ml) necessary for the production of large infusions are replaced with each other, the upper and lower molds and the upper and lower molds must be replaced respectively. Lower cooling plate, cumbersome installation and debugging, low efficiency, long time required to replace the mold, a lot of waste of expensive consumables such as non-PVC film necessary for mold debugging

Method used

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Embodiment Construction

[0011] The present invention will be further described in conjunction with the accompanying drawings of the above-mentioned embodiments.

[0012] As shown in the figure, the non-PVC film welding mold of the present invention includes a corresponding upper mold body 1 and a lower mold body 8, the upper mold body is provided with a cooling plate 2, and the lower mold body 8 is provided with a cooling liquid circulation inner Cavity, that is, the lower mold body 8 and the cooling plate are made into an integrated structure, and electric heating rod jacks and thermocouple jacks are set on the upper mold body 1 and the lower mold body 8, and the electric heating rods 4 of the upper and lower mold bodies 1 and 8 , 6 and thermocouples 5, 7 are respectively inserted in their corresponding jacks.

[0013] The cooling plate 2 on the upper mold body 1 cools the non-PVC film to prevent the non-welding surface from melting due to excessive temperature during welding, and only processes the...

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Abstract

A fusion welding die set of non-PVC film for making plastic packing bag is composed of an upper die with cooling plate and a lower die, and features that said upper and lower dies have the holes in which the electrically heating rods and the thermoelectric couple are inserted.

Description

technical field [0001] The invention relates to a non-PVC film welding mold, which belongs to a bag-making welding molding device in a non-PVC film automatic bag-making and filling-sealing machine, and is a supporting facility for a non-PVC film automatic bag-making and filling-sealing machine pharmaceutical machinery. Background technique [0002] A complete set of non-PVC film welding mold consists of upper mold, upper mold heating plate, upper cooling plate, lower mold, lower mold heating plate and lower cooling plate. The upper and lower mold heating plates are respectively equipped with electric heating rods and thermocouples, which are used to control the working temperature of the upper and lower molds respectively. The heat transfer between the heating plate and the mold is through plate-to-plate contact. A groove is respectively processed in the middle of the upper and lower mold working surfaces to inlay the upper and lower cooling plates respectively. When the no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B31B1/64B31B50/64
Inventor 朱庆国李之良黄利军
Owner SHINVA MEDICAL INSTR CO LTD
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