CN202640670U - Centrifugal fan blade injection molding mould - Google Patents

Abstract

The utility model relates to a centrifugal fan blade injection molding mould, and mainly solves the technical problem that demolding in one shot cannot be achieved through utilization of an existing fan blade, and the like. The centrifugal fan blade injection molding mould is characterized in that a sliding mould core comprises an upper slide block and a lower slide block, wherein the front end of the lower slide block is in an inclined shape, the upper end face of the upper slide block is provided with a circular arc camber which is matched with a circular arc angle on the upper end face of an air duct of a fan blade, the end portion of the upper slide block is provided with a positioning table, the upper slide block and the lower slide block are movably connected with each other and can slide along an inclined plane at the front end of the lower slide block, and the front ends of the upper slide block and the lower slide block are matched with the air duct of the fan blade in shape. The centrifugal fan blade injection molding mould has the advantages that the sliding mould core is arranged to be in a split structure to form the upper slide block and the lower slide block, and the inclined plane arranged at the front end of the lower slide block enables the upper slide block to be movably connected with the lower slide block so that the upper slide block and the lower slide block can be in synchronous linkage. At the time of pullout of the mould, the upper slide block slides horizontally along the inclined plane of the lower slide block and can be pulled out from the air duct of the fan blade successively in layered mode. The centrifugal fan blade injection molding mould solves the technical problem that the demolding in one shot cannot be achieved due to the fact that an existing air duct of the fan blade is provided with a circular arc transition angle.

Description

The centrifugal fan injection forming mold

Technical field

The utility model relates to a kind of injection mold, relates in particular a kind of centrifugal fan injection forming mold, is mainly used in die industry.

Background technology

Fan blade is the core component of centrifugal fan, as shown in Figure 1 and Figure 2, because existing fan blade 1 has arc air channel 11, and the upper surface in air channel 11 is provided with arc chord angle 12, when injection mo(u)lding, can't finish and loose core like this, can not realize the once injection moulding of fan blade 1.Therefore, most domestic enterprise all relies on from regional import fan blades 1 such as Germany, Taiwan for many years, and because western countries' blockade on new techniques long-term to China, cause the disposable ejection technique of domestic fan blade 1 to can not get solving always, make the buyer's market of domestic formation fan blade 1, do not have the bargaining power with external supplier, cause the production cost of domestic centrifugal fan too high, do not possess market competitive power.

In order to save cost, the domestic Split type structure fan blade that simplified style also occurs, basically adopt an iron plate to be in the same place with plastic spliced, the Design and manufacture difficulty is simplified to greatest extent and is reduced, but the great disparity in view of the thermal expansion coefficient difference of metal and plastics, cause the craft precisions such as the concentricity of this member and dynamic balancing to be had a greatly reduced quality, also cause the technical indicators such as low energy consumption, reliability and durability of product to be difficult to guarantee simultaneously.In addition, the artificial rectification of plastic after the injection mo(u)lding in the production process, and the multistation stamping-out of metal shell, shaping, secondary assembling etc. have increased widely the production energy consumption and have made processing cost.

Summary of the invention

Can't realize the technical problems such as the disposable demoulding in order to solve existing fan blade; The utility model provides a kind of centrifugal fan injection forming mold, and this mould can effectively be realized the single injection-molded of fan blade.

For solving above technical problem, the technical scheme that the utility model is taked is a kind of centrifugal fan injection forming mold, it includes dynamic model piece and quiet module, be provided with the slip core rod at the dynamic model piece, described dynamic model piece is provided with the chute of a plurality of circular array, in each chute, be provided with and be provided with restriction slip core rod slippage block stroke and that be fixedly connected with the dynamic model piece along the slip core rod of chute slippage at chute, be provided with the opening locating hole at this block; Described slip core rod includes upper and lower slide block, the front end of sliding block is skewed, the upper surface of top shoe is provided with circular arc camber and its end that the arc chord angle with upper surface, fan blade air channel is complementary and is provided with positioning table, top shoe and sliding block are movably connected and can be along the inclined plane slippages of sliding block front end, and the front end shape of top shoe and sliding block and the air channel of fan blade are complementary; Be provided with drive unit between dynamic and static module, this drive unit closes in dynamic and static module, can drive upper and lower slide block synchronization-sliding during minute mould, and makes the positioning table of top shoe snap in the locating hole of block upper and lower slippage and block clamping and separate.

Further, the angled-lift splits that described sliding block includes movable slider and is connected with movable slider, angled-lift splits consists of described sliding block front end; Be provided with on the inclined plane of angled-lift splits and be the inverted T-shaped gathering sill, be provided with the guide block that is complementary with the inverted T-shaped gathering sill at top shoe, this guide block is fixedly connected with top shoe; Be provided with limiting stand and drive hole in the upper surface of movable slider, this limiting stand cooperates with block is mutually spacing, and drive unit one end can pass drive hole and order about the movable slider horizontal sliding.

Further, be provided with jacking block in the gathering sill of described angled-lift splits, this jacking block below is provided with spring, and this spring places the interior end of gathering sill to compress mutually with jacking block, and the other end compresses mutually with the dynamic model piece.

Further, described block is provided with U-lag, the T-shaped shape in the cross section of locating hole, the positioning table shape of described top shoe and locating hole are complementary and can be along up and down slippages of locating hole, and the limiting stand of described movable slider upper surface slips under the driving of drive unit in the U-lag of block and cooperates with block is mutually spacing.

Further, the bottom face of described block is provided with transition shoulder near locating hole one side, and the end face of this transition shoulder can fit with the movable slider upper surface.

Further, be provided with first step in the lower end of described locating hole inwall, be provided with second step in the outer wall lower end of positioning table, the height of second step is greater than first step; The sidewall upper that is positioned at locating hole opening one side at block is provided with the 3rd step, and the 3rd shoulder height fits greater than second step and with top shoe.

Further, described locating hole and positioning table are provided with two, bottom at block is provided with stopper slot between two locating holes, the corresponding positive stop lug boss that is complementary with stopper slot that is provided with on the sidewall of top shoe, this positive stop lug boss is structure as a whole between two positioning tables of top shoe and with top shoe.

Further, be provided with the locked mode groove at described top shoe, be provided with lock module in quiet module, this lock module closes in dynamic and static module, push up mutually with the locked mode groove during minute mould and press and separate.

Further, described drive unit is that an end is fixed on the curved bar on the quiet module, and this curved bar includes with the vertically arranged fixed bar of quiet module and is skewed first and drives bar and second and drive bar, and the first angle of driving bar is driven bar less than second; Drive hole on the described movable slider is inclined hole, and its angle of inclination and the second angle of inclination of driving bar are complementary.

Further, respectively be fixed with guide plate in described dynamic model piece chute both sides, be equipped with short slot at the sidewall of guide plate and chute, the two bottom sides of described movable slider is equipped with guide rail, and this guide rail places that slippage cooperates in the short slot of guide plate.

The beneficial effects of the utility model are the slip core rod to be made as Split type structure form upper and lower slide block, and at the front end of sliding block the inclined plane is set, and top shoe and sliding block are flexibly connected, make top shoe and sliding block can form synchronous interaction, when withdrawing pattern, top shoe is successively extracted from the air channel layering of fan blade along sliding block inclined plane horizontal sliding, and the air channel that has solved existing fan blade has the technical problem that the arc transition angle can not the disposable demoulding.

Description of drawings

Fig. 1 is the three-dimensional reference diagram of existing fan blade

Fig. 2 is the sectional structure chart of existing fan blade

Fig. 3 is the three-dimensional reference diagram of a kind of centrifugal fan injection forming mold of the utility model embodiment

Fig. 4 is the three-dimensional reference diagram of the utility model embodiment dynamic model piece

Fig. 5 is slide assembling front view under the core rod matched moulds state of the utility model embodiment

Fig. 6 is A--A place sectional structure chart among Fig. 5

Fig. 7 is P place enlarged drawing among Fig. 6

Fig. 8 is slide three-dimensional structure diagram under the core rod matched moulds state of the utility model embodiment

Fig. 9 is that the utility model embodiment core rod that slides divides main TV structure figure under the mould state

Figure 10 is B--B place sectional structure chart among Fig. 8

Figure 11 is that the utility model embodiment core rod that slides divides three-dimensional reference diagram under the mould state

Figure 12 is K place enlarged drawing among Figure 10

Figure 13 is the three-dimensional reference diagram of the quiet module of the utility model embodiment

Figure 14 is the main TV structure figure of the utility model embodiment top shoe

Figure 15 is the plan structure figure of the utility model embodiment top shoe

Figure 16 is the three-dimensional reference diagram of the utility model embodiment top shoe

Figure 17 is the main TV structure figure of the utility model embodiment angled-lift splits

Figure 18 is C--C place sectional structure chart among Figure 15

Figure 19 is the three-dimensional reference diagram of the utility model embodiment angled-lift splits

Figure 20 is the three-dimensional reference diagram of the utility model embodiment movable slider

Figure 21 is the main TV structure figure of the utility model embodiment block

Figure 22 is D--D place sectional structure chart among Figure 19

Figure 23 is E--E place sectional structure chart among Figure 19

Figure 24 is the three-dimensional reference diagram of the utility model embodiment block

Figure 25 is the main TV structure figure of the utility model embodiment curved bar

Figure 26 is the three-dimensional reference diagram of the utility model embodiment curved bar

The specific embodiment

Below in conjunction with accompanying drawing the utility model embodiment is described further:

To shown in Figure 26, the utility model is a kind of centrifugal fan injection forming mold such as Fig. 1, and it includes dynamic model piece 2 and quiet module 3, be provided with slip core rod 4 at dynamic model piece 2, because 11 upper surfaces, arc air channel of fan blade 1 are arc chord angle 12, when injection mo(u)lding, can't realize the disposable demoulding; Finish the disposable demoulding when the injection moulding for ease of fan blade 1, described dynamic model piece 2 is provided with the chute 21 of a plurality of circular array, chute 21 quantity are identical with air channel 11 quantity of fan blade 1, being provided with in each chute 21 can be along the slip core rod 4 of chute 21 slippages, be provided with restriction slip core rod block 54 slippage strokes and that be fixedly connected with dynamic model piece 2 at chute 21, be provided with opening locating hole 51 at this block 5; Described slip core rod 4 includes upper and lower slide block 41,42, the front end of sliding block 42 is skewed, the upper surface of top shoe 41 is provided with circular arc camber and its end that the arc chord angle 12 with 11 upper surfaces, fan blade 1 air channel is complementary and is provided with positioning table 411, top shoe 41 is movably connected with sliding block 42 and can be along inclined plane 4221 slippage of sliding block 42 front ends, and top shoe 41 is complementary with the front end shape of sliding block 42 and the air channel 11 of fan blade 1; Between dynamic and static module 2,3, be provided with drive unit 6, this drive unit 6 closes in dynamic and static module 2,3, can drive upper and lower slide block 42,41 synchronization-slidings during minute mould, and makes locating hole 51 interior upper and lower slippages that the positioning table 411 of top shoe 41 snaps in block 5 and block 5 clampings and separate; Slip core rod 4 is made as Split type structure to be formed, sliding block 41,42, and at the front end of sliding block 42 inclined plane 4221 is set, and top shoe 41 and sliding block 42 are flexibly connected, make top shoe 41 and sliding block 42 can form synchronous interaction, like this moving, quiet module 2, during 3 matched moulds, drive unit 6 can drive sliding block 42 inside slippages, top shoe 41 is first with synchronously inwardly slippage of sliding block 42, when the positioning table 411 of top shoe 41 snaps in the locating hole 51 of block 5 when interior, be subjected to the restriction of block 5 locating holes 51, top shoe 41 is fitted along the end face of make progress in the locating hole 51 of block 5 slippage and quiet module 3 again, finishes mould assembling action; And when dynamic and static module 2,3 minutes moulds, drive unit 6 can drive sliding block 42 outside slippages, at this moment, top shoe 41 and sliding block 42 synchronous interactions, the positioning table 411 of top shoe 41 is along the locating hole 51 downward slippages of block 5, after positioning table 411 and locating hole 51 break away from, the arc-shaped curved surface of top shoe 42 is with (in the arc air channel) under the upper surface that places fan blade 1 arc air channel 11, drive unit 6 just can be disposable be extracted top shoe 41 and sliding block 42 and forms the layering demoulding from the air channel 11 of fan blade 1 like this, thereby realizes dynamic and static module 2,3 minute mould action.Because slip core rod 4 is made as Split type structure forms upper and lower slide block 41,42, although upper and lower slide block 41,42 is actively coupled, but when withdrawing pattern, upper and lower slide block 42,41 forms hierarchies and successively extracts from the air channel 11 of fan blade 1, and the air channel 1 that has solved existing fan blade 1 has the technical problem that arc chord angle 12 can not the disposable demoulding; Certainly, stripping means has just adopted two-layer demolding structure like this, air channel 11 such as fan blade 1 is too small or excessive, slip core rod 4 can also be made as three-decker and form the upper, middle and lower slide block, equally also can reach the purpose of the disposable demoulding, but the present embodiment adopts upper and lower slide block 42,41 layering demolding structure to be easy to production and processing, and therefore, the embodiment of the present embodiment is optimal way.

In the present embodiment, for the ease of upper and lower slide block 42,41 synchronous interaction, the angled-lift splits 422 that described sliding block 42 includes movable slider 421 and is connected with movable slider 421, described sliding block 42 front ends of angled-lift splits 422 formations; Be provided with on the inclined plane 4221 of angled-lift splits 422 and be inverted T-shaped gathering sill 4222, be provided with the guide block 412 that is complementary with inverted T-shaped gathering sill 4222 at top shoe 41, this guide block 412 is fixedly connected with top shoe 41; Be provided with limiting stand 4211 and drive hole 4212 in the upper surface of movable slider 421, this limiting stand 4211 and 5 mutually spacing cooperations of block, drive unit 6 one ends can pass drive hole 4212 and order about movable slider 421 horizontal slidings; Sliding block 42 is made as Split type structure, so not only can be convenient to the production and processing of sliding block 42, and also can be convenient to assemble top shoe 41, when assembling top shoe 41, guide block 412 with top shoe 41 inserts in the gathering sill 4222 of angled-lift splits 422 first, angled-lift splits 422 is fixedly connected with movable slider 421 again; Because gathering sill 4222 is arranged on the inclined-plane 4221 of angled-lift splits 422, and the guide block 412 of top shoe 41 places in the gathering sill 4222, and during slippage, be convenient to and angled-lift splits 422 synchronous interactions by top shoe 41 under the driving of movable slider 421 for angled-lift splits 422 like this; Angled-lift splits 422 can adopt thread connecting mode, welding manner or dovetail groove snap fit with being fixedly connected with of movable slider 421, because the snap fit of dovetail groove is easy to production and processing and assembling, the preferred oat tail groove structure that adopts makes angled-lift splits 422 be fixedly connected with movable slider 421 in the present embodiment.And in the upper surface of movable slider 421 limiting stand 4211 is set, when drive unit 6 drove movable slider 421 slippage, limiting stand 4211 was subjected to stopping of block 5 like this, just can avoid angled-lift splits 422 and top shoe 41 because of the bad quiet core rod in the excessive top of slippage stroke.

In the present embodiment, for avoiding movable slider 421 under the driving force of drive unit 6 inwardly during slippage, produce between top shoe 41 and the chute 21 frictional force cause too early to movable slider 421 slippages in the other direction, in the gathering sill 4222 of described angled-lift splits 422, be provided with jacking block 4223, these jacking block 4223 belows are provided with spring 4224, this spring 4224 places gathering sill 4222 interior ends to compress mutually with jacking block 4223, and the other end compresses mutually with dynamic model piece 2; Moving, quiet module 2, during 3 minutes moulds, drive unit 6 orders about movable slider 421 and angled-lift splits 422 outside slippages, because angled-lift splits 422 is provided with gathering sill 4222, and top shoe 41 is flexibly connected by guide block 412 and angled-lift splits 422, outwards move in the sliding process at angled-lift splits 422, the guide block 412 of top shoe 41 from the right side of gathering sill 4222 high point gradually to the left side low spot place slippage of gathering sill 4222, thereby the positioning table 411 of top shoe 41 is separated along the locating hole 51 downward slippages of block 5 and with the locating hole 51 of block 5, thereby realization layering withdrawing pattern is loosed core, and withdrawing pattern loose core finish after, the guide block 412 of top shoe 41 places gathering sill 4222 left sides and its sidewall of angled-lift splits 422 to fit, and finishes moving, quiet module 2, mould action in 3 minutes; And moving, quiet module 2, during 3 matched moulds, order about movable slider 421 at drive unit 6, during angled-lift splits 422 inside slippage, the guide block 412 of top shoe 41 places the left side of the gathering sill 4222 of angled-lift splits 422, for avoiding in slipping, produce between the chute 21 of top shoe 41 and dynamic model piece 2 friction cause top shoe 41 too early to gathering sill 4222 right side slippages (as top shoe 41 too early to gathering sill 4222 right side slippages, can cause forming between the positioning table 411 of top shoe 41 and the block 5 and interfere, make movable slider 421, angled-lift splits 422, top shoe 41 can't reset and form matched moulds), at the gathering sill 4222 interior jacking blocks 4223 that arrange, so just can utilize the elastic force of jacking block 4223 below springs 4224 to overcome frictional resistance between top shoe 41 and the chute 21, effectively prevent the right side slippage to gathering sill 4222 that top shoe 41 is too early, and when the sidewall of the sidewall that makes positioning table 411 when top shoe 41 inside slippages and locating hole 51 fits, top shoe 41 is subjected to the elastic force that overcomes spring 4224 that stops of block 5 locating holes 51, order about jacking block 4223 to bottom offset, at this moment, the guide block 412 of top shoe 41 just can be along to the right slippage of gathering sill 4222, and makes the positioning table 411 of top shoe 41 snap in the locating hole 51 of block 5 upwards slippages to fit to form with quiet module 3 and move, quiet module 2,3 mould assembling action.

In the present embodiment, slippage stroke for ease of control movable slider 421, described block 5 is provided with U-lag 52, the T-shaped shape in the cross section of locating hole 51, positioning table 411 shapes of described top shoe 41 and locating hole 51 are complementary and can be along locating hole slippage about in the of 51, and the limiting stand 4211 of described movable slider 421 upper surfaces slips under the driving of drive unit 6 in the U-lag 52 of block 5 and 5 mutually spacing cooperations of block; At block 5 U-lag 52 is set, at movable slider 421 limiting stand 4211 is set, like this when drive unit 6 orders about movable slider 421 inside slippage, limiting stand 4211 can fit with U-lag 52 and form spacingly, avoids the bad quiet core rod in the excessive top of movable slider 421 slippage strokes; And the locating hole 51 on the block 5 is arranged on the T shape, the such positioning table 411 of top shoe 41 locating hole 51 of fast clamping and separating block 5 just; Certainly, also the locating hole 51 of block 5 can be made as through hole, positioning table 411 is made as rectangular shaped with a vertical clamp, in clamping locating hole 51, vertical clamp is inserted in the through hole, can reach equally the fixedly purpose of top shoe 41, but the locating hole 51 of block 5 is made as the T shape, is easier to production and processing, and make things convenient for positioning table 411 clampings and separating block 5 locating holes 51 of top shoe 41, therefore, the embodiment of the present embodiment is optimal way.

In the present embodiment, when driving movable slider 421 inside slippage, produce larger frictional resistance for fear of drive unit 6, the bottom face of described block 5 is provided with transition shoulder 53 near locating hole 51 1 sides, the end face of this transition shoulder 53 can fit with movable slider 421 upper surfaces, moving, quiet module 2, under 3 minutes mould states, because the upper surface of angled-lift splits 422 is inclined plane 4221, and top shoe 41 places the left side of angled-lift splits 422, at this moment, the upper surface height of top shoe 41 and the upper surface height of angled-lift splits 422 all are lower than the upper surface height of movable slider 421, and moving, quiet module 2, during 3 matched moulds, drive unit 6 orders about in the top shoe 41 inside slippings, for the baseplane of the upper surface of avoiding movable slider 421 and block 5 produces frictional resistance, the transition shoulder 53 that can fit with movable slider 421 upper surfaces near locating hole 51 1 side settings at the bottom face of block 5, this is with respect to having increased gap between all the other planes and movable slider 421 upper surfaces except transition shoulder 53, block 5 baseplanes, like this when movable slider 421 inside slippage, pass through first the baseplane on right side, block 5 bottom, just not can and baseplane, block 5 right side between produce frictional force, and when movable slider 421 continues inside slippage after its upper surface and transition shoulder 53 applyings, just can order about the baseplane of movable slider 421 and the baseplane of dynamic model piece 2 chutes 21 and fit, guarantee the positioning accuracy of movable slider 421.

In the present embodiment, for fear of top shoe 41 when the matched moulds, answer back to quiet core rod, mold damage or reduction mould and die accuracy, lower end at described locating hole 51 inwalls is provided with first step 511, outer wall lower end at positioning table 411 is provided with second step 4111, and the height of second step 4111 is greater than first step 511; The sidewall upper that is positioned at locating hole 51 openings one side at block 5 is provided with the 3rd step 512, the three steps 512 height and fits greater than second step 4111 and with top shoe 41; The positioning table 411 of top shoe 41 snaps in locating hole 51 when interior, be subjected to the restriction of first step 511, the top of top shoe 41 and the gap between the quiet core rod have been increased, can not make like this top shoe 41 collide quiet core rod, and when top shoe 41 continuation make progress slippage along locating hole 51, second step 4111 on the positioning table 411 plays a role, and since the height of second step 4111 greater than the height of first step 511, like this with regard to relative decrease the gap between top shoe 41 tops and the quiet core rod, and when top shoe 41 is fitted with the end face of quiet module 3, be subjected to the restriction of the 3rd step 512, further dwindle the fit clearance of top shoe 41 ends and quiet core rod, make complete the fitting with quiet core rod in top of top shoe 41 form relative zero clearance cooperation, the plastic that injects so just can not produce burr, the defectives such as overlap, need not through artificial secondary cutting, just can guarantee the outward appearance of product, effectively save material and cost of labor; And dwindle gap between top shoe 41 and the quiet core rod by the segmentation of first step 511, second step 4111 and the 3rd step 512, so not only can avoid top shoe 41 when matched moulds, to collide quiet core rod, simultaneously, also can improve closing precision, make after the plastic injection mo(u)lding without manufacturing deficiencies such as burr, overlaps, save material and cost of labor.

In the present embodiment, for limit top shoe 41 along locating hole 51 stroke of slippage upwards, described locating hole 51 and positioning table 411 are provided with two, bottom at block 5 is provided with stopper slot 54 between two locating holes 51, the corresponding positive stop lug boss 413 that is complementary with stopper slot 54 that is provided with on the sidewall of top shoe 41, this positive stop lug boss 413 is structure as a whole between two positioning tables 411 of top shoe 41 and with top shoe 41; The positioning table 411 of top shoe 41 and the locating hole 51 of block 5 are made as respectively two, can guarantee like this top shoe 41 positioning balances and positioning accuracy; And stopper slot 54 is set in block 5 bottoms, at top shoe 41 positive stop lug boss 413 is set, like this when top shoe 41 makes progress slippage along locating hole 51, positive stop lug boss 413 snaps in just can limit the upwards stroke of slippage of top shoe 41 in the stopper slot 54, and can improve its positioning accuracy, the phenomenons such as burr, overlap appear in plastic when reducing injection moulding.

In the present embodiment, because the pressure of injection moulding is larger, for avoiding in injection moulding process, because injection pressure backs down greatly slip core rod 4, be provided with locked mode groove 414 at described top shoe 41, be provided with lock module 31 in quiet module 3, this lock module 31 closes in dynamic and static module 2,3, push up mutually pressure with locked mode groove 414 during minute mould and separate; In quiet module 3 lock module 31 is set, at top shoe 41 locked mode groove 414 is set, like this when dynamic and static module 2,3 matched moulds, locked groove piece 31 tops on the quiet module 3 are pressed in the locked mode groove 414 of top shoe 41, and pressed by the top of the mechanicals efforts of dynamic and static module 2,3 matched moulds, but just anti-skidding core rod 4 occurs to be shifted when injection moulding or struts the phenomenon such as slip core rod 4.

In the present embodiment, for the ease of the matched moulds and a minute mould that drives slip core rod 4, described drive unit 6 is that an end is fixed on the curved bar 61 on the quiet module 3, this curved bar 61 includes with quiet module 3 vertically arranged fixed bars 611 and is skewed first and drives bar 612 and second and drive angle a that bar 613, the first drives bar 612 less than the second angle b that drives bar 613; Drive hole 4212 on the described movable slider 421 is inclined hole, its angle of inclination and the second angle of inclination of driving bar 613 are complementary, be skewed first, second curved bar 61 setting and drive bar 612,613, close in dynamic and static module 2,3 like this, during minute mould, utilize first, second to drive bar 612,613 angle of inclination is ordered about the 4 inside and outside slippages of slip core rod and finished matched moulds and minute mould action; And be convenient to that curved bar 61 closes in dynamic and static module 2,3, during minute mould with being connected and separating of movable slider 421, be skewed drive hole 4212 movable slider 421 setting, curved bar 61 can and separate with dynamic and static module 2,3 closure penetrate drive hole 4212 and and drive hole 4212 withdrawing pattern of realizing slip core rod 4 that is separated loose core and the matched moulds homing action.

In the present embodiment, because moving, quiet module 2,3 are closing, when dividing mould, movable slider 421 levels are along chute 21 slippages, the upper and lower displacement phenomenon occurs for fear of movable slider 421, respectively be fixed with guide plate 22 in described dynamic model piece 2 chutes 21 both sides, sidewall at guide plate 22 and chute 21 is equipped with short slot 23, the two bottom sides of described movable slider 421 is equipped with guide rail 4213, this guide rail 4213 places the short slot 23 interior slippages of guide plate 22 to cooperate, by cooperating of short slot 23 and guide rail 4213, just can guarantee that card is moving, quiet module 2,3 are closing, when dividing mould, movable slider 421 can only be along short slot 23 horizontal slidings on the guide plate 22, avoid movable slider 421 along chute 21 upper and lower displacements, improved the closing precision of slip core rod 4; And in chute 21, add guide plate 22, not only can be convenient to the production and processing of chute 21, the assembling of the core rod 4 of also can being convenient to simultaneously to slide.

Above-described embodiment should not be considered as restriction of the present utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.

Claims (10)

1. centrifugal fan injection forming mold, it includes dynamic model piece and quiet module, be provided with the slip core rod at the dynamic model piece, it is characterized in that described dynamic model piece is provided with the chute of a plurality of circular array, being provided with in each chute can be along the slip core rod of chute slippage, be provided with restriction slip core rod slippage block stroke and that be fixedly connected with the dynamic model piece at chute, be provided with the opening locating hole at this block; Described slip core rod includes upper and lower slide block, the front end of sliding block is skewed, the upper surface of top shoe is provided with circular arc camber and its end that the arc chord angle with upper surface, fan blade air channel is complementary and is provided with positioning table, top shoe and sliding block are movably connected and can be along the inclined plane slippages of sliding block front end, and the front end shape of top shoe and sliding block and the air channel of fan blade are complementary; Be provided with drive unit between dynamic and static module, this drive unit closes in dynamic and static module, can drive upper and lower slide block synchronization-sliding during minute mould, and makes the positioning table of top shoe snap in the locating hole of block upper and lower slippage and block clamping and separate.

2. a kind of centrifugal fan injection forming mold according to claim 1 is characterized in that the angled-lift splits that described sliding block includes movable slider and is connected with movable slider, and angled-lift splits consists of described sliding block front end; Be provided with on the inclined plane of angled-lift splits and be the inverted T-shaped gathering sill, be provided with the guide block that is complementary with the inverted T-shaped gathering sill at top shoe, this guide block is fixedly connected with top shoe; Be provided with limiting stand and drive hole in the upper surface of movable slider, this limiting stand cooperates with block is mutually spacing, and drive unit one end can pass drive hole and order about the movable slider horizontal sliding.

3. a kind of centrifugal fan injection forming mold according to claim 2, it is characterized in that in the gathering sill of described angled-lift splits, being provided with jacking block, this jacking block below is provided with spring, and this spring places the interior end of gathering sill to compress mutually with jacking block, and the other end compresses mutually with the dynamic model piece.

4. a kind of centrifugal fan injection forming mold according to claim 3, it is characterized in that described block is provided with U-lag, the T-shaped shape in the cross section of locating hole, the positioning table shape of described top shoe and locating hole are complementary and can be along up and down slippages of locating hole, and the limiting stand of described movable slider upper surface slips under the driving of drive unit in the U-lag of block and cooperates with block is mutually spacing.

5. a kind of centrifugal fan injection forming mold according to claim 4 is characterized in that the bottom face of described block is provided with transition shoulder near locating hole one side, and the end face of this transition shoulder can fit with the movable slider upper surface.

6. a kind of centrifugal fan injection forming mold according to claim 5 is characterized in that being provided with first step in the lower end of described locating hole inwall, is provided with second step in the outer wall lower end of positioning table, and the height of second step is greater than first step; The sidewall upper that is positioned at locating hole opening one side at block is provided with the 3rd step, and the 3rd shoulder height fits greater than second step and with top shoe.

7. a kind of centrifugal fan injection forming mold according to claim 6, it is characterized in that described locating hole and positioning table are provided with two, bottom at block is provided with stopper slot between two locating holes, the corresponding positive stop lug boss that is complementary with stopper slot that is provided with on the sidewall of top shoe, this positive stop lug boss is structure as a whole between two positioning tables of top shoe and with top shoe.

8. a kind of centrifugal fan injection forming mold according to claim 7 is characterized in that being provided with the locked mode groove at described top shoe, is provided with lock module in quiet module, and this lock module closes in dynamic and static module, push up mutually with the locked mode groove during minute mould and press and separate.

9. a kind of centrifugal fan injection forming mold according to claim 8, it is characterized in that described drive unit is that an end is fixed on the curved bar on the quiet module, this curved bar includes with the vertically arranged fixed bar of quiet module and is skewed first and drives bar and second and drive bar, and the first angle of driving bar is driven bar less than second; Drive hole on the described movable slider is inclined hole, and its angle of inclination and the second angle of inclination of driving bar are complementary.

10. a kind of centrifugal fan injection forming mold according to claim 9, it is characterized in that respectively being fixed with guide plate in described dynamic model piece chute both sides, sidewall at guide plate and chute is equipped with short slot, the two bottom sides of described movable slider is equipped with guide rail, and this guide rail places the interior slippage of the short slot of guide plate to cooperate.

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