CN109278320A - A kind of fan mask thermosetting property compression mould - Google Patents

Abstract

The present invention provides a kind of two template die structural thermoset compression moulds of fan mask thermosetting property compression mould a cavity per mould；Mold molded part uses the direct milling molding mode of integral mold plate；Thermosetting plastics uses the uniformly distributed full weight to guarantee plastic parts moulding of billot segmentation；The upper and lower mould temperature control of mold uses Oil-temperature control, and intracavitary forming temperature control is 150 DEG C；The ejecting mechanism of mold is using 4 oil cylinder driving liftout plates and thimble balance ejection；Mould structure is simple, rationally distributed, and manufacture is easy to assembly, and production ginseng is practical good, can provide beneficial reference for the molding of similar plastic.

Description

A kind of fan mask thermosetting property compression mould

Technical field

The present invention relates to injection mold mechanism design field, specially a kind of fan mask thermosetting property compression mould.

Background technique

SMC (Sheet molding compound) in thermosetting plastics is a kind of sheet molding composite, Primary raw material is made of GF (special yarn), UP (unsaturated-resin), low shrinkage additive, MD (filler) and various auxiliary agents.SMC Composite material is solving plastic part in the disadvantages of easy to aging, perishable, insulation is poor, cold resistance is poor, poor fire, short service life Aspect has unique performance, and SMC composite material and its SMC are molded plastic, mainly have following field to apply: electrical industry, vapour Turner industry, rolling stock, Communication Engineering, explosion-proof electric equipment shell etc..In thermoset plastic forming technique, thermosetting plastics Compression forming also known as be pressed and molded or compression moulding, be mainly used for form thermosetting plastics, as phenoplasts, amino mould Material etc..Its molding basic process including the following steps: 1) feed: plastics, which are added, to be had under certain forming temperature In mold addition chamber；2) molding pressurization, upper male mould enter cavity plate under press machine effect；Plastics are under temperature and pressure effect Melt-flow is full of entire type chamber, and resin and curing agent effect crosslink reaction, generates figure compound, plastics thus admittedly Change, becomes the effigurate plastic of tool；3) it demoulds, when plastic be formed completely and when with optimum performance, i.e. opening mold Take out plastic.In plastics molding process, thermosetting plastics compression forming advantage are as follows: it is intracavitary that plastics are directly added into type, when charging Mold is unlimited, i.e., first feeds and mold afterwards, and structure is slightly simple, without running gate system, does not also need to design complicated top Mechanism out, material consumption are few；Its disadvantage are as follows: the production cycle is long, low efficiency, is not easy to suppress complex-shaped plastic, is not easy to obtain Accurate in size plastic.

Compression mold structure design it is similar with injection mold basic structure, the difference is that, in mould structure at The requirement of the design of type part, demoulding mechanism, material feeding, molding driving device etc. is different；For injection molding, to plastic The design requirements such as molded part, temperature control, the exhaust of die cavity are relatively high, the cooling fan lid heat of certain trendy automobile engine There are biggish risks for the design of solidity plastic forming dies lamps structure, thus need to make structure innovation according to actual needs and set Meter, to ensure that the production of plastic is gone on smoothly.

Summary of the invention

Technical problem to be solved by the present invention lies in a kind of fan mask thermosetting property compression mould is provided, design is reasonable, Compact-sized, the operation is stable is securely and reliably, easy-to-use；In order to solve the above-mentioned prior art problems, the present invention is using as follows Scheme: a kind of fan mask thermosetting property compression mould, including panel, concave template, convex template, support block, ejection cylinder, thimble face Plate, thimble push plate, bottom plate, support column, pressure block, guide post, guide sleeve, oil connection, thimble, punch-pin oil circuit, cavity plate oil circuit, spiral shell Line mold insert, balance weight.

Preferably, the stationary mould for mould component includes panel, concave template；Panel, concave template are existed by screw fastening combination Together, the part of the upper die of mold is constituted.

Preferably, the mold dynamic model component includes convex template, support block, ejection cylinder, thimble panel, thimble push plate, bottom Plate；Convex template, support block, bottom plate are made up of the part of the lower die of mold screw association together；Thimble panel, thimble push plate are logical Screw association is crossed together, for carrying ejection thimble.

Preferably, the mold accessory part includes support column, pressure block, balance weight, screw thread mold insert；Support column is used for Enhance the intensity of convex template, pressure block bears mold clamping pressure for balanced；Balance weight is used for the flat of the clamping pressure of mold Weighing apparatus；Molding of the screw thread mold insert for the threaded hole of plastic.

Preferably, the mold heating component oil connection, punch-pin oil circuit, cavity plate oil circuit；Oil connection is for oil circuit Intervention picks out, and punch-pin oil circuit, cavity plate oil circuit are used for the heating of die punch plate, concave template, constitutes the temperature control system of mold；Mould The temperature control system of tool is the key that technology controlling and process, and for the molding of this mold plastic, the temperature control of concave template is 153~156 Between DEG C, the temperature of convex template is controlled between 148~151 DEG C；Oil line pipe uses through type uniform distribution type layout of beam line, pipe Road diameterPipeline enclosure is away from 30mm, and pipeline is apart from plastic type identity distance from for 24mm~30mm；To guarantee the equal of heating Even property, local location are heated using pipe well；Oil temperature computer heating control is using dedicated oil temperature machine conduction oil using synthesis conduction oil FYD350。

Preferably, the mould ejection component includes thimble panel, thimble push plate, thimble, and ejecting mechanism uses thimble It ejects, the ejection of the thimble panel, thimble push plate of driving thimble ejection is driven by 4 uniformly distributed ejection cylinders；Oil cylinder 5 Heavy type HOB oil cylinder, maintenance easy to disassemble are selected, oil cylinder core bar front end is installed on die bottom plate both ends using forward flange and is opened up T-slot in, core bar head use screw thread M18X1.5 connecting T-shaped block；The stroke of oil cylinder is controlled by stroke limit control switch System, when not in use between control, with provide mold production when automatically control necessary to signal source；Oil cylinder oil pipe uses 3/8 inch Fast plug.

Preferably, the mold forming part concave template, convex template are main forming part, using the direct milling of template Molding mode molding；The center of concave template, convex template, designing has circumference type centrally-located boss, and two when for compressing finally Closed orientation between person；Concave template material selection 3Cr2W8V hot die steel, for the service life for guaranteeing concave template, heat Processing uses the compound co-permeation method of boron nitrogen；Its technique is carried out in two steps；First step process are as follows: 570 DEG C of -3h keep the temperature nitrocarburizing； Second step are as follows: 900 DEG C of -5h keep the temperature boronisings, after 1040 DEG C of heat preservation 2h, oil quenching；Third step are as follows: 550 DEG C of -2h heat preservations, tempering three It is secondary；High rigidity, high-wearing feature superficial layer are obtained using Bononizing pretreatment, but boride layer is more crisp, easy peeling, and nitrogen is added, and increases Depth of penetration reduces Brittleness, strengthens transition zone, improves the supporting role of surface boronizing layer, avoids multiple in SMC plastics The peeling of molding surface boride layer is caused after use；It is 900~1000Hv that concave template, which is surface-treated hardness, and forming surface is polished to Ra0.4, remaining then needs to accomplish Ra1.6；Convex template material uses S136 (STAVAXESRS), and convex template final hardness is HRC48~52；Forming surface need to be polished to Ra0.4, remaining then needs to accomplish Ra3.2；Punch-pin is matched with cavity plate fit clearance by H8/f8 Close or take 0.025~0.075mm of unilateral gap.

Preferably, the mould guide mechanism guiding is driven using the secondary guide post guide sleeve guiding of cylindrical type 4, ejection using oil cylinder Dynamic ejection；For the closed reduction precision for guaranteeing cavity plate, punch-pin, guide post guide sleeve is needed using larger-diameter guide post guide sleeve, this mould The selection guide post diameter of toolLength 120mm；Guide sleeve outer diameter diameterLength 60mm；Guide post is inserted into guide sleeve It is inserted into 15mm or more；Layout of the fourth officer guide post guide sleeve on mold is laid out using symmetric form, lower die and upper when to prevent assembly Mould is wrongly installed, and therein one secondary guide post guide sleeve uses eccentrically mounted, eccentric distance 1mm, to guarantee mold in the compacting of press machine Under, it is indeformable after long-term work, 10 cylindrical type support columns have been uniformly arranged to enhance the strength and stiffness of convex template；Support Column column diameter45 steel of material.

Preferably, the exhaust exhaust passage of the mold is using centre hole and the exhaust of mating surface gap and cavity plate positioning Platform center opens up gas vent.

Preferably, the mold processing parameters, plastic parts moulding technological parameter are selected are as follows: pressure p=8MPa, temperature t in mould =150 DEG C, stepping time T=1.2min/mm, technique total time is 25 points of min.

Preferably, the mold is that single-chamber is laid out two plate mould structures；Structure type upper mold integrally uses fixed Form, to be applicable in the larger and larger-size feature of production batch of this plastic；In production, using manual plus billot；Molding zero In part, punch-pin 3 and cavity plate 2 are installed on mold using flip-over type, and punch-pin, cavity plate use integral mold plate formula, i.e. punch-pin, cavity plate Directly processing and milling forms from template, be conducive to temperature control oil duct open up and the whole intensity of die cavity.

In the present invention: the technical issues of mold overall structure solves is: plastic volume is big, using splitlevel clout chamber, protects The stone energy Uniform Flow of plastics has been demonstrate,proved to each corner of die cavity, has guaranteed the filling of plastic, the beneficial effect reached is: having been guaranteed Billot can be uniformly laid with, and fusing plastics energy uniform pack arrives type chamber each corner, guarantee the full weight that plastic fills.

In the present invention: the technical issues of ejecting mechanism component solves is: the balance ejection of plastic after compression forming reaches Beneficial effect be: ensure that plastic without deformation balance ejection.

The present invention is whole, and compression mould structural strength is poor compared to the prior art, and Forming Quality is unstable, mold manufacture Difficult problem, the beneficial effect is that: mould structure is simple, rationally distributed, and manufacture is easy to assembly, and production ginseng is practical good.

Detailed description of the invention

Fig. 1 plastic component structure；

The design of Fig. 2 parting；

Fig. 3 band subregion；

Fig. 4 mould structure；

Fig. 5 molded part；

Fig. 6 heating pipe layout；

Fig. 7 technique process for using.

Specific embodiment

Fig. 1-7 show related description figure of the present invention；Cooling fan lid plastic component structure is as shown in Figure 1, the shape of plastic is Comparison rule, outline border are rectangular box, and centre is fan hole.Outline border setting installation side, installs and is provided among side at equal intervals Screw hole；In the circumferential edge of fan hole, it is provided with 8 nut mold insert L1.Wall thickness mean value is 2mm, and 2 ° of inner wall draft, outer wall pulls out 2.5 ° of mould.The inner and outer surfaces of plastic have certain smoothness requirements.Medium pore need to install fan main body, there is certain carrying Force request, thus if formed using general thermoplastic, requirement is not achieved in intensity and rigidity.The choosing of plastic material With modified plastics alloy SMC, modifying agent selects SMC macromolecule resin asphalt modifier.The molding room of this plastic is using closed Molding room, closed molding room's parting design are as follows:

1) direction of action of compression direction punch-pin is identical as the axial line of mold.Plastic is carried out using compress mode For molding, the parting Surface Design of molding room is unsuitable complicated, in order to avoid cause pressure unevenness and molding is caused to be failed, thus, parting Before, it should determine reasonable pressure direction.Pressure direction selection must do following consideration: 1. convenient for charging；2. being conducive to pressure Transmitting；3. compression aspect is guaranteeing to carry out plastic uniform pressurization and pressurization apart from short, the pressure loss is small；4. be easily installed and Fixed inserts L1, pays the utmost attention to inserts L1 being placed on lower die；5. guaranteeing the intensity of punch-pin；6. pressure-driven direction and plastics stream Dynamic direction is consistent, to be conducive to plastics flowing；7. guaranteeing that the long core of plastic central part should be located on direction of exerting pressure, short The principle of core side core-pulling, while in view of the high size of required precision should not be put in the pressurizing direction.This plastic is from front The plastic that can be press-formed with reverse side, preferably selecting simple face is compression aspect, thus, according to the features of shape of plastic, originally The selected pressure direction of second compression molding selects the direction F1 as shown in Figure 2.

2) parting design is under compression aspect shown in F1, and using closed molding room, molding room includes feed compartment and type Chamber two parts.Charging chamber is the continuity of type chamber, and design follows following principle: 1) compressive plane is not provided between punch and matrix；2) convex, Cavity plate should not be too high with cyclization, to reduce abrasion；3) punch-pin and charging chamber sidewall friction, easily cause abrasion, preferably use directly at one's side Form；4) die joint is arranged at the profile of plastic maximum outer, avoids side core pulling as far as possible；The flash trace of die joint is located at Plastic is than more covert and be easy to modified place；The size of concentricity will be required to be located at the same side of pressing mold.

Based on above-mentioned, parting as shown in Figure 2 is selected to design.Parting design in, die joint include plastic outer surface, Face and 4, parting skirt face part are opened up in plastic holes face, feed compartment construction materials contract edge, after being sutured in UG software by above several faces Constitute the die joint P1 of plastic.The cooperation of closed molding room's punch-pin and cavity plate is mainly opened up at face on construction materials contract edge, cavity plate and punch-pin Fit clearance is appropriate, too small to be not easy to be vented, easily abrade；Flash attitude will affect the quality of plastic；To guarantee the smooth of exhaust Logical, punch-pin and cavity plate are selected and cooperate by H8/f8 or 0.025~0.075mm of unilateral gap is taken to cooperate.Construction materials contract edge is opened up to be cooperated at face Duan Buyi is too high, and entrance should add 20, and "~1 ° of gradient, oral area add round-corner transition, as shown in Figure 3.

Mold specific embodiment is, as shown in Fig. 4, Fig. 5, Fig. 6, Fig. 7, a kind of fan mask thermosetting property compression mould Tool, including panel 1, concave template 2, convex template 3, support block 4, ejection cylinder 5, thimble panel 6, thimble push plate 7, bottom plate 8, support Column 9, pressure block 10, guide post 11, guide sleeve 12, oil connection 13, thimble 14, punch-pin oil circuit 15, cavity plate oil circuit 16, screw thread mold insert 17, balance weight 18.

The stationary mould for mould component includes panel 1, concave template 2；Panel 1, concave template 2 are by screw fastening combination one It rises, constitutes the part of the upper die of mold.

As shown in figure 4, the mold dynamic model component includes convex template 3, support block 4, ejection cylinder 5, thimble panel 6, thimble Push plate 7, bottom plate 8；Convex template 3, support block 4, bottom plate 8 are made up of the part of the lower die of mold screw association together；Thimble panel 6, thimble push plate 7 passes through screw association together, for carrying ejection thimble.

The mold accessory part includes support column 9, pressure block 10, balance weight 18, screw thread mold insert 17；Support column 9 is used for Enhance the intensity of convex template 3, pressure block 10 bears mold clamping pressure for balanced；Balance weight 18 is used for the molding pressure of mold The balance of power；Molding of the screw thread mold insert 17 for the threaded hole of plastic.Wherein, the length of thimble 14 is chosen as 30-50mm.

The mold heating component oil connection 13, punch-pin oil circuit 15, cavity plate oil circuit 16；Oil connection 13 is used for oil circuit Intervention pick out, punch-pin oil circuit 15, cavity plate oil circuit 16 be used for die punch plate 3, concave template 2 heating, constitute the temperature control of mold System；The temperature control system of mold is the key that technology controlling and process, and for the molding of this mold plastic, the temperature of concave template 2 is controlled Between 153~156 DEG C, the temperature of convex template 3 is controlled between 148~151 DEG C；Oil line pipe uses through type uniform distribution type Layout of beam line, pipe diameterPipeline enclosure is away from 30mm, and pipeline is apart from plastic type identity distance from for 24mm~30mm；To protect The uniformity of heating is demonstrate,proved, local location is heated using pipe well；Oil temperature computer heating control is using dedicated oil temperature machine conduction oil using synthesis Conduction oil FYD350, as shown in Figure 6.

The mould ejection component includes thimble panel 6, thimble push plate 7, thimble 14, and ejecting mechanism uses thimble 14 It ejects, the ejection of thimble panel 6, thimble push plate 7 that driving thimble 14 ejects is driven by 4 uniformly distributed ejection cylinders 5； Oil cylinder 5 selects heavy HOB oil cylinder, maintenance easy to disassemble, and oil cylinder core bar front end is installed on 8 both ends of die bottom plate using forward flange In the T-slot opened up, core bar head uses screw thread M18X1.5 connecting T-shaped block；The stroke of oil cylinder is opened by stroke limit control Close to control, when not in use between control, with provide mold production when automatically control necessary to signal source；Oil cylinder oil pipe uses 3/8 inch of fast plug.

As shown in figure 5, the mold forming part concave template 2, convex template 3 are main forming part, it is direct using template The molding of milling molding mode；The center of concave template 2, convex template 3, design have circumference type centrally-located boss, for compressing finally When closed orientation between the two；2 material selection 3Cr2W8V hot die steel of concave template, for the use for guaranteeing concave template 2 Service life, heat treatment use the compound co-permeation method of boron nitrogen；Its technique is carried out in two steps；First step process are as follows: 570 DEG C of -3h keep the temperature nitrogen Carbon permeation；Second step are as follows: 900 DEG C of -5h keep the temperature boronisings, after 1040 DEG C of heat preservation 2h, oil quenching；Third step are as follows: 550 DEG C of -2h heat preservations, Tempering is three times；High rigidity, high-wearing feature superficial layer are obtained using Bononizing pretreatment, but boride layer is more crisp, easy peeling, nitrogen member is added Element increases depth of penetration, reduces Brittleness, strengthens transition zone, improve the supporting role of surface boronizing layer, avoids moulding in SMC Material causes the peeling of molding surface boride layer after being used for multiple times；It is 900~1000Hv, forming surface that concave template 2, which is surface-treated hardness, It is polished to Ra0.4, remaining then needs to accomplish Ra1.6；3 material of convex template uses S136 (STAVAXESRS), and convex template 3 is final hard Degree is HRC48~52；Forming surface need to be polished to Ra0.4, remaining then needs to accomplish Ra3.2；Punch-pin and cavity plate fit clearance press H8/ F8 cooperates or takes 0.025~0.075mm of unilateral gap.

The mould guide mechanism guiding is using the secondary guide post guide sleeve guiding of cylindrical type 4, and ejection is using oil cylinder driving ejection； For the closed reduction precision for guaranteeing cavity plate 2, punch-pin 3, guide post guide sleeve is needed using larger-diameter guide post guide sleeve, this mold Select 11 diameter of guide postLength 120mm；12 outer diameter diameter of guide sleeveLength 60mm；Guide post is inserted into guide sleeve It is inserted into 15mm or more；Layout of the fourth officer guide post guide sleeve on mold is laid out using symmetric form, lower die and upper when to prevent assembly Mould is wrongly installed, and therein one secondary guide post guide sleeve uses eccentrically mounted, eccentric distance 1mm, to guarantee mold in the compacting of press machine Under, it is indeformable after long-term work, 10 cylindrical type support columns 9 have been uniformly arranged to enhance the strength and stiffness of convex template 3；Branch 9 column diameter of dagger45 steel of material.

The exhaust exhaust passage of the mold is opened using centre hole and the exhaust of mating surface gap and cavity plate positioning table center If gas vent.

The mold processing parameters, plastic parts moulding technological parameter are selected are as follows: pressure p=8MPa, temperature t=150 in mould DEG C, stepping time T=1.2min/mm, technique total time is 25 points of min.

The mold is that single-chamber is laid out two plate mould structures；Structure type upper mold integrally uses fixed form, with It is applicable in the larger and larger-size feature of production batch of this plastic；In production, using manual plus billot；It is convex in forming part Mould 3 and cavity plate 2 are installed on mold using flip-over type, and punch-pin, cavity plate use integral mold plate formula, i.e., punch-pin, cavity plate are directly from mould Processing and milling forms on plate, be conducive to temperature control oil duct open up and the whole intensity of die cavity.

In actual work, as shown in fig. 7, the course of work (application method) of mechanism is divided into following steps:

1) mold open, mold are opened at PL1 die joint, and press machine cope plate uplink, mold is opened before forming.

2) charging will preheat after SMC thermosetting plastics billot stripping and slicing, by manipulator by shown in 4 pieces of billot Fig. 3 the On one~4th 4 subregion, starting oil temperature machine, which synchronizes, heats upper and lower mould.

3) die closing press machine cope plate downlink, by the time setting gradually die closing of molding technique parameter, heating, until at Type is completed.

4) PL1 die joint is opened compression molding and is finished.Pressure cope plate uplink, mold are opened in PL1 point, plastic stay with It is cooling after a certain period of time to plastic on convex template 3, prepare ejection.

5) when ejection plastic is cooled to 80 DEG C or so using fan cold blowing, 4 oil cylinder pushing thimble panels 6, thimble push plates 7 and thimble 14 upwards eject, complete plastic complete demoulding ejection 6) reset reset when, thimble panel 6, thimble push plate 7 are by oil Cylinder, which pushes, first to be resetted, the reseting procedure of mould template with die sinking process on the contrary, wait next time mold be closed completely.

Specific embodiment described herein is only an example for the spirit of the invention, technology belonging to the present invention The technical staff in field can make various modifications or additions to the described embodiments or by a similar method Substitution, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.

Claims (7)

1. a kind of fan mask thermosetting property compression mould, including panel (1), concave template (2), convex template (3), support block (4), ejection Oil cylinder (5), thimble panel (6), thimble push plate (7), bottom plate (8), support column (9), pressure block (10), guide post (11), guide sleeve (12), oil connection (13), thimble (14), punch-pin oil circuit (15), cavity plate oil circuit (16), screw thread mold insert (17), balance weight (18)； The stationary mould for mould component includes panel (1), concave template (2)；Panel (1), concave template (2) are by screw fastening combination one It rises, constitutes the part of the upper die of mold；The mold dynamic model component includes convex template (3), support block (4), ejection cylinder (5), thimble Panel (6), thimble push plate (7), bottom plate (8)；Convex template (3), support block (4), bottom plate (8) constitute mould by screw association together The part of the lower die of tool；Thimble panel (6), thimble push plate (7) together, eject thimble for carrying by screw association；It is described Mold accessory part includes support column (9), pressure block (10), balance weight (18), screw thread mold insert (17)；Support column (9) is for increasing The intensity of strong convex template (3), pressure block (10) bear mold clamping pressure for balanced；Balance weight (18) is used for the molding of mold The balance of pressure；Molding of the screw thread mold insert (17) for the threaded hole of plastic；It is the mold heating component oil connection (13), convex Moulding oil road (15), cavity plate oil circuit (16)；Intervention of the oil connection (13) for oil circuit picks out, punch-pin oil circuit (15), cavity plate oil circuit (16) it is used for the heating of die punch plate (3), concave template (2), constitutes the temperature control system of mold；The temperature control system of mold is technique The key of control, for the molding of this mold plastic, the temperature control of concave template (2) is convex template (3) between 153~156 DEG C Temperature control between 148~151 DEG C；Oil line pipe uses through type uniform distribution type layout of beam line, pipe diameterPipe Road spacing 30mm, pipeline is apart from plastic type identity distance from for 24mm~30mm；For the uniformity for guaranteeing heating, local location is using pipe Derrick design；Oil temperature computer heating control is using dedicated oil temperature machine conduction oil using synthesis conduction oil FYD350.

2. a kind of fan mask thermosetting property compression mould, the mould ejection component include thimble panel according to claim 1 (6), thimble push plate (7), thimble (14), ejecting mechanism are ejected using thimble (14), the thimble of driving thimble (14) ejection The ejection of panel (6), thimble push plate (7) is driven by 4 uniformly distributed ejection cylinders (5)；Oil cylinder (5) selects heavy type HOB oil cylinder, Maintenance easy to disassemble, oil cylinder core bar front end are installed in the T-slot that die bottom plate (8) both ends are opened up using forward flange, core bar Head uses screw thread M18X1.5 connecting T-shaped block；The stroke of oil cylinder is controlled by stroke limit control switch, when not in use between control System automatically controls necessary signal source to provide when mold production；Oil cylinder oil pipe uses 3/8 inch of fast plug.

3. a kind of fan mask thermosetting property compression mould according to claim 1, the mold forming part concave template (2), punch-pin Plate (3) is main forming part, is formed using the direct milling molding mode of template；The center of concave template (2), convex template (3), if Closed orientation between the two in respect of circumference type centrally-located boss, when for compressing finally；Concave template (2) material selection 3Cr2W8V hot die steel, for the service life for guaranteeing concave template (2), heat treatment uses the compound co-permeation method of boron nitrogen；Its technique It is carried out in two steps；First step process are as follows: 570 DEG C of -3h keep the temperature nitrocarburizing；Second step are as follows: 900 DEG C of -5h heat preservation boronisings, 1040 DEG C After keeping the temperature 2h, oil quenching；Third step are as follows: 550 DEG C of -2h heat preservations, tempering is three times；High rigidity, high-wearing feature are obtained using Bononizing pretreatment Superficial layer, but boride layer is more crisp, easy peeling, and nitrogen is added, and increases depth of penetration, reduces Brittleness, strengthens transition zone, mentions The supporting role of high surface boronizing layer avoids the peeling that molding surface boride layer is caused after SMC plastics are used for multiple times；Concave template (2) surface treatment hardness is 900~1000Hv, and forming surface is polished to Ra0.4, remaining then needs to accomplish Ra1.6；Convex template (3) material Matter uses S136 (STAVAXESRS), and convex template (3) final hardness is HRC48~52；Forming surface need to be polished to Ra0.4, remaining It then needs to accomplish Ra3.2；Punch-pin and cavity plate fit clearance are cooperated by H8/f8 or are taken 0.025~0.075mm of unilateral gap.

4. a kind of fan mask thermosetting property compression mould according to claim 1, the mould guide mechanism guiding uses cylindrical type 4 Secondary guide post guide sleeve guiding, ejection is using oil cylinder driving ejection；For the closed reduction precision for guaranteeing cavity plate (2), punch-pin (3), guide post Guide sleeve is needed using larger-diameter guide post guide sleeve, 11 diameter of selection guide post of this moldLength 120mm；Guide sleeve 12 Outer diameter diameterLength 60mm；Guide post is inserted into guide sleeve and is inserted into 15mm or more；Layout of the fourth officer guide post guide sleeve on mold is adopted It is laid out with symmetric form, lower die and upper mold are wrongly installed when to prevent assembly, and therein one secondary guide post guide sleeve uses eccentrically mounted, eccentricity From for 1mm, be guarantee mold under the compacting of press machine, it is indeformable after long-term work, be uniformly arranged 10 cylindrical types supports Column (9) enhances the strength and stiffness of convex template (3)；Support column (9) column diameter45 steel of material.

5. the exhaust exhaust passage of a kind of fan mask thermosetting property compression mould according to claim 1, the mold uses thimble Hole and the exhaust of mating surface gap and cavity plate positioning table center open up gas vent.

6. a kind of fan mask thermosetting property compression mould according to claim 1, the mold processing parameters, plastic parts moulding technique ginseng Number is selected are as follows: pressure p=8MPa, t=150 DEG C of temperature, stepping time T=1.2min/mm in mould, technique total time is 25 points (min)。

7. a kind of fan mask thermosetting property compression mould according to claim 1, the mold is that single-chamber is laid out two plate mould knots Structure；Structure type upper mold integrally uses fixed form, to be applicable in the larger and larger-size spy of production batch of this plastic Point；In production, using manual plus billot；In forming part, punch-pin (3) and cavity plate (2) are installed on mold using flip-over type, convex Mould, cavity plate use integral mold plate formula, i.e., processing and milling forms directly from template for punch-pin, cavity plate, is conducive to opening for temperature control oil duct And if the whole intensity of die cavity.