CN201881496U

CN201881496U - Manufacturing die for conductive rubber roller

Info

Publication number: CN201881496U
Application number: CN2010202160318U
Authority: CN
Inventors: 刘宝利
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-04
Filing date: 2010-06-04
Publication date: 2011-06-29
Anticipated expiration: 2020-06-04

Abstract

The utility model provides a manufacturing die for a conductive rubber roller, which consists of an upper template and a lower template. The upper template and the lower template are respectively provided with a 1/2 die cavity; the structure of the cavity adopts an integral rectangle cube shape integrally; locating holes for a plurality of rubber roller metal mandrels are arranged on the die; the metal mandrels are arranged in the die cavity uniformly and in parallel; and the distance among the mandrels is set according to the diameter of a finished rubber roller plus reserved cutting and grinding volumes, and usually the diameter of the rubber roll is added with 3-5mm. A sulphide vulcanized by the die is a rubber block similar to a rectangle cube; the metal mandrels are distributed at the middle of the rubber block similar to a rectangle cube, and furthermore, the rubber block can be cut into a rubber column similar to a rectangle the center of which comprises one metal mandrel; and the rubber column can be further grinded into the required conductive rubber roller. As the die with the cavity having a structure of an integral rectangle cube shape is adopted, time spent on cleaning the die is reduced; and the time for clearing and assembling each die during vulcanization is reduced from 6-8 minutes originally to 2-3 minutes.

Description

The mfg. moulding die of conducting rubber roller

Technical field

The utility model relates to the mfg. moulding die of conducting rubber roller, relates to the mfg. moulding die of the conducting rubber roller that uses on OA equipment such as duplicator, laser printer more specifically.

Background technology

The conducting rubber roller that on OA equipment such as duplicator, laser printer, uses.Electron conductive type and ionic conduction type are arranged.Electron conductive type is to add as fillers such as conductive black, inorganic conductive powder, conductive agents to make rubber obtain electric conductivity in rubber, its advantage is that resistance value is low to the sensitiveness that temperature and humidity changes, but its shortcoming is relatively more difficult when the semiconductive scope obtains resistance homogeneity and stability.And ionic conduction type is the ionic conductivity that relies on elastomeric material self body just to have, and its advantage is homogeneity of electrical resistance height (this is the important indicator of this type of conducting rubber roller), and what shortcoming was the resistance influence that is subjected to temperature and humidity than the electron type conduction is big.Also have electronic conduction and ionic conduction are used in combination, but not very good to the uniformity control aspect of resistance yet.

When adopting ionic conductive rubber material to make conducting rubber roller, be divided into and have mould sulfuration and non-mould to vulcanize two kinds of forms.Used mould is divided into tubular die and non-tubular shape mould again.Used vulcanization of rubber ageing method has forcing press sulfuration, sulfurizing pot vulcanization, microwave vulcanization etc.When employing has die methods to make rubber rollers, be with metal mandrel and rubber insert simultaneously in the mould with rubber together vulcanize also bonding become the rubber roll semifinished product after, become rubber roll through grinding.When non-die methods is made rubber roll, be that first sulfuration obtains rubber tube, seal in the metal mandrel that scribbles hot-melt adhesive again and heat again make it be bonded into the rubber roll semifinished product after, become rubber roll through grinding.The method of different sulfuration manufacturing conducting rubber rollers is each has something to recommend him.Manufacturer is selected according to s own situation.When making rubber rollers with the mould sulfuration usually, all be the cavity shape of coming designing mould according to the basic configuration of finished product rubber rollers.As mould commonly used (the flat-open type mould are meant the mould of only being made up of cope match-plate pattern and lower bolster) such as tubular die and the cylindric type cavity moulds of flat-open type arranged.For enhancing productivity, the flat-open type mould is set to a plurality of cylindric die cavities usually, shown in accompanying drawing (1).When adopting cylindric type cavity mould of flat-open type and dull and stereotyped forcing press that the epichlorohydrin rubber with ionic conduction type is vulcanized, there is heavier sticking to mould problem, the cleaning mould is time-consuming and a bother thing, cause production efficiency low, epichlorohydrin rubber when having because of the sulfuration depanning again under the high temperature is more crisp, sticking to mould very easily is damaged to product in addition, makes defective products rate height.Although the method that can take some to reduce sticking to mould, as mould being polished, Du Chrome or plating Teflon, selecting extraordinary die steel material mfg. moulding die etc., because of the cylindric die cavity of flat-open type mould is many, how the male and fomale(M﹠F) of die cavity is so effect is all undesirable.Taked following solution for addressing the above problem the utility model.

Summary of the invention

In order to solve the deficiencies in the prior art, the utility model proposes the mfg. moulding die of a brand-new conducting rubber roller, concrete technical scheme is as follows:

A kind of mfg. moulding die of conducting rubber roller, mould is made up of bolster, bolster respectively has 1/2 mold cavity, the cavity structure of mould is whole nearly rectangle cubic type, mould is provided with the locating hole of a plurality of rubber rollers metal mandrels, the metal mandrel evenly is arranged in parallel in mold cavity, and mandrel distance each other is that the diameter according to the finished product rubber rollers adds that cutting of reservation and amount of grinding set, and the diameter of getting rubber rollers usually adds 3～5mm.

Sulfuration obtains nearly rectangle cube in mould, nearly rectangle cube intermediate section is furnished with the whole block rubber of metal-cored axle, further can the center of cutting into contain the approximate rectangular rubber column of a metal mandrel, this rubber column can further grind to form needed conducting rubber roller.

Specify as follows:

With a plurality of cylindric die cavity of arranging on the flat-open type mould, by original separate form, become the form of whole UNICOM, promptly simplify the cavity structure of a plurality of cylindric die cavities, cancellation is cylindrical-shaped structure independently separately originally, makes the die cavity of mould become whole approximate rectangular cubical structure.The sulfide obtained of sulfuration like this, just by obtained single the rubber roll base independently one by one of former cylindric type cavity mould sulfuration, as shown in Figure 5, become and be one and be similar to the cube shaped whole block rubber of rectangle, and be distributed with the metal mandrel therein, as shown in Figure 3.Being similar to the height of the cubical mold cavity of rectangle and the diameter of former cylindric die cavity is consistent substantially, dwindle the original every chamber of a plurality of cylindric die cavities spacing each other simultaneously, but still keep greater than former cylindric die cavity diameter, purpose is to leave the processing regulated quantity for follow-up processing of cutting.The orientation distance that is about between former every cot mandrel is done corresponding adjustment, and its mutual distance is reduced, and so also just can increase the quantity of every mould institute vulcanized rubber roller relatively, thereby improve output relatively.Adopt the obtained sulfide of this mould sulfuration to be, be similar to the cubical whole block rubber of rectangle, and be distributed with a plurality of metal mandrels therein, cut the position in further getting by mandrel, makes it become the approximate rectangular rubber column that a mandrel is contained at the center.Then rubber column is ground, and the extension position intercepting, make it finally become desired conducting rubber roller.Change a plurality of cylindric die cavities into global approximation rectangle cube die cavity, though on consumption glue amount, increase to some extent, and increased and cut operation together, but owing to the spacing of having dwindled between original each cylindric die cavity, thereby increased the quantity of rubber roll that every mould vulcanizes, every mould production output is improved.Main is owing to adopted the type cavity mould of global approximation rectangle cube structure, simplified mold cavity structure, reduced the cleaning time that mould spent, made things convenient for operation, production efficiency is improved, every mould cleaning mould and loading and unloading mould need shorten to every mould and only use 2～3 fens clock times with 6～8 minutes time during by original sulfuration.Simultaneously also because sulfuration obtains is approximate rectangular cube shaped whole block rubber, the possibility that product sustains damage when making the sulfuration depanning reduces greatly, has reduced the defective products rate that produces because of sulfuration.Therefore the advantage of estimating its effect from synthesis result still is fairly obvious.

Conducting rubber roller of the present utility model is that the ionic conductive rubber of employing is the main material manufacturing.Can enumerate as epoxychloropropane and oxirane copolymer rubber (ECO), epoxychloropropane and oxirane and allyl glycidyl ether copolymer rubber (GECO) etc.For a change its processability and reduction resistance are also used other rubber of part to the sensitiveness of temperature and humidity under the prerequisite that does not influence ionic conductivity simultaneously.Can enumerate as, neoprene, acrylonitrile-butadiene rubber, natural rubber, butadiene rubber, butadiene-styrene rubber, isoprene rubber, ethylene propylene diene rubber etc.

Description of drawings

Fig. 1 is 1/2 a template schematic diagram of a plurality of cylindric cavity structure moulds of flat-open type;

Fig. 2 is 1/2 a template schematic diagram of the approximate rectangular cube shaped cavity structure mould of flat-open type;

Fig. 3 is the schematic diagram that adopts the sulfide that the sulfuration of approximate rectangular cubic type cavity mould obtains, and it is approximate rectangular cube shaped whole block rubber, wherein contains a plurality of metal mandrels;

Fig. 4 is the rubber column schematic diagram through the approximate cube cylindricality after cutting, and it is for wherein containing the rubber rollers blank of a metal mandrel;

Fig. 5 is a finished product conducting rubber roller schematic diagram.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing: as shown in Figure 2, bolster respectively has 1/2 mold cavity, the cavity structure of mould is whole rectangle cubic type, mould is provided with the locating hole of a plurality of rubber rollers metal mandrels, the metal mandrel presses the capable arrangement of meta horizontalization in mold cavity, mandrel distance each other is that the diameter according to the finished product rubber rollers adds that the amount of grinding that cuts of reservation sets, and cutting amount of grinding is 2～5mm.

According to the equipment and the method for routine manufacturing rubber mix glue, it is stand-by as the rubber mixing mill that adopts ф 250mm the rubber composition in the table one to be made epoxy glue.The metal mandrel that rubber roll is used is anticipated the back and has brushed the heat vulcanization type adhesive stand-by.Adopt the rubber plate vulcanization machine of 400 * 400mm, the mould that will have rectangle cube die cavity, put into machine, machine and mould together are warmed up to 160 ℃, after arriving temperature mould is taken out, ready epoxy glue and cot mandrel are packed in the mould, sending into machine then vulcanizes, cure time (was decided on the rubber thickness that is vulcanized in 15～30 minutes, usually the cure time of thin thickness is short, the time that thickness is thick is long, the thickness of rubber depends on the diameter of rubber rollers), the whole block rubber of the rectangular cubic shaped of sulfuration slaking is taken out in the sulfuration back, as shown in Figure 3, further with cutting tool according to the position during the metal mandrel is got above the blob of viscose, it is cut into every rubber column that contains the approximate cube cylindricality of a metal mandrel, as shown in Figure 4, further rubber column is ground with outer circular end grinding machine, make it become rubber rollers, press the surplus glue of length and intercepting rubber roll two ends, position of finished product rubber roll again, at last (spraying conduction fluoro-containing coating is handled on the surface of rubber roll, the chemical passivation corrosion treatment, be coated with conducting powder or conducting powder slurry etc.).Promptly become conducting resinl roller finished product, as shown in Figure 5, obtain the rubber rollers 1 of metal mandrel 2.Can be used as the conducting rubber roller that uses on the OA equipment such as duplicator, laser printer.

Conducting rubber roller composition therefor such as table 1:

The proportioning material composition	Mass fraction
		Epichlorohydrin rubber
1	60.0
		Epichlorohydrin rubber 2	30.0
Acrylonitrile-butadiene rubber (NBR)	10.0
		NA-22	1.8
TRA	0.5
		Sulphur	0.6
Zinc oxide	4.0
		Magnesia	3.0
Stearic acid	2.0

Claims

1. the mfg. moulding die of a conducting rubber roller, it is characterized in that: mould is made up of bolster, bolster respectively has 1/2 mold cavity, the cavity structure of mould is whole nearly rectangle cubic type, mould is provided with the locating hole of a plurality of rubber rollers metal mandrels, the metal mandrel evenly is arranged in parallel in mold cavity, and mandrel distance each other is that the diameter according to the finished product rubber rollers adds that cutting of reservation and attrition process amount set, and the diameter of getting rubber rollers adds 3～5mm.

2. the mfg. moulding die of electric rubber rollers according to claim 1, it is characterized in that: the sulfide that is obtained by the mould sulfuration is the cubical block rubber of nearly rectangle, the nearly cubical block rubber intermediate section of rectangle is furnished with metal-cored axle.