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Production process of polyfluortetraethylene screen net for blueprinting machine

A polytetrafluoroethylene and production process technology, which is applied in the production process field of polytetrafluoroethylene filter screen used in photoprinting machines, can solve the problems of impracticality, low production cost and high filter screen cost, and achieves fast production speed and improved success. The effect of large rate and empty area

Inactive Publication Date: 2013-06-05
JIANGHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The domestic production cost is relatively low, and the production method has a single-hole punching method, but it is too slow and time-consuming, and has been basically eliminated; there is a manual positioning punching method, which is also slow; there is also a three-hole continuous punching method, which is It is faster than the previous two methods, but one punch can process five sets of PTFE filters in one day, and it can only be applied to one printing machine
The cost of imported polytetrafluoroethylene filter screen is too high to be practical

Method used

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  • Production process of polyfluortetraethylene screen net for blueprinting machine
  • Production process of polyfluortetraethylene screen net for blueprinting machine
  • Production process of polyfluortetraethylene screen net for blueprinting machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as Figure 1-5 As shown, select a high-quality polytetrafluoroethylene sheet with a thickness of 0.5mm and a width of 650mm, about 10 kg, and a length of about 13000mm. The fixed frame 2 with one end opening is fixed on the numerically controlled feeding frame through the fixture fixing hole 1, and one end of the fixed frame 2 is provided with a chute 3, and a slidable sliding screw rod 9 and a nut 10 are arranged in the chute 3, so that The other end of each fixed mount 2 is provided with a through hole 8 and a fixed screw 12 and a nut 10 cooperating with it; each sliding screw 9 and fixed screw 12 compress the briquetting block 4 and the fixed mount 2, and fix The polytetrafluoroethylene raw material plate 7 is clamped, and a gasket 11 is also provided between the pressing block 4 and the plate 7 . The punching die 6 is fixed on the CNC punching machine through the connecting hole 5 of the ejector die punching machine and the connecting hole 15 of the punching d...

Embodiment 2

[0027] Cutting the polytetrafluoroethylene filter screen that punched out in embodiment 1 into length is 1300mm, wide is the polytetrafluoroethylene filter screen of 640mm, is a set of polytetrafluoroethylene filter screen that can be used for the Italian navy high-speed printing machine. Vinyl fluoride filter. The material yield is 90%.

Embodiment 3

[0029] Cutting the polytetrafluoroethylene filter screen punched out in Example 1 into a polytetrafluoroethylene filter screen with a length of 1300 mm and a width of 325 mm is a set of polytetrafluoroethylene filter screens that can be used for the DH-9916 high-speed printing machine. Tetrafluoroethylene filter. The material yield is 100%.

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Abstract

The invention provides a production process of a polyfluortetraethylene screen net for blueprinting machine, which is characterized by comprising the steps of: at first, clamping a polyfluortetraethylene sheet on a tensioning clamp, and then using a punching die, capable of sliding with respect to the polyfluortetraethylene sheet, for punching the polyfluortetraethylene sheet unit by unit, wherein the punching die consists of a hole die and a knockout-pin die which are mutually fitted; the knockout-pin die is provided, in a direction vertical to the sliding direction, with at least two rows of punching rods parallel to each other, the hole die is provided with holes fitted with the punching rods; and among the punching rods of the knockout-pin die, three adjacent punching rods form an isoceles triangle. The polyfluortetraethylene screen net for blueprinting machine, which is produced according to the production process of the invention, has larger clearance area per unit area, high production speed and high yield, saves cost, and is quite strong in practicability.

Description

technical field [0001] The invention relates to the field of components of a printing machine, in particular to a production process of a polytetrafluoroethylene filter screen for a printing machine. Background technique [0002] At present, the high-speed printing machine models generally used by domestic large-scale design and research institutes are DH-9916, Océ series, Admiral series and other ammonia machine series. The important accessories of each series of models are PTFE filters. It is an important consumable part of the machine, and it is indispensable. It must be used when starting up. The general photo printing machine consumes 2-3 sets every year. The source is mainly imported, and the price is relatively expensive. Each set is more than 2,000 yuan, and the cost is relatively high. [0003] Moreover, different models of printing machines require different specifications of teflon filter screens. There are four different specifications of PTFE filter screens on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B26F1/14B26D7/02
Inventor 胡思前刘继延虞铁雄朱小松
Owner JIANGHAN UNIVERSITY