CN112388916A

CN112388916A - Product direct forming die

Info

Publication number: CN112388916A
Application number: CN202011122427.0A
Authority: CN
Inventors: 余星; 王全炉
Original assignee: Luxshare Electronic Technology Kunshan Ltd
Current assignee: Luxshare Electronic Technology Kunshan Ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-02-23
Anticipated expiration: 2040-10-20
Also published as: CN112388916B

Abstract

The invention discloses a product direct forming die which comprises a female die core, a male die base plate and at least two gate inserts. The male die core and the female die core are assembled to form a first parting surface, and a second parting surface is formed between the male die base plate and the male die core. The male die core and the female die core are provided with a main cavity at the first parting surface. The runner is gone into in the first income son through-hole of son locating on the core mould benevolence, and the bottom and the public mould backing plate fixed connection of son are gone into to the runner, and the top that the son was gone into to the runner extends to first profile, and the top that the son was gone into to the runner is including falling into the first tip in the main die cavity and the second tip that is located the main die cavity. A first sub-cavity is formed between the first end portion and the side wall of the first sub-through hole, a pouring head groove is formed in the second end portion, and the side wall of the pouring head groove is communicated with the side wall of the first sub-cavity through a submerged pouring runner. The invention realizes the automatic separation of the molded product from the sprue, does not need the subsequent CNC machining of the sprue, greatly reduces the manufacturing period and cost of the product and reduces the environmental pollution.

Description

Product direct forming die

Technical Field

The invention relates to the field of mold manufacturing, in particular to a direct product forming mold.

Background

At present, the conventional mold design method in the industry adopts a lap joint type pouring gate for glue feeding, and a pouring gate with a shape similar to that of the pouring gate needs to be designed at the filling tail end of a product, so that the air is exhausted and the appearance is improved. The product after injection molding and the sprue runner are integrated, and a CNC (Computer numerical Control) is needed to reprocess and remove the sprue. Therefore, the manufacturing process of the product is complex, the manpower requirement is high, the bad processing risks can be caused during the CNC, such as the excessive cutting of the pouring gate, the residue, the deformation of the product and the like, and in addition, the dust pollution is generated in the CNC processing process.

Therefore, it is necessary to provide a new direct product molding die to solve the above problems.

Disclosure of Invention

The invention aims to provide a product direct forming die, which realizes automatic separation of a formed product from a pouring gate without subsequent CNC machining of the pouring gate, greatly reduces the manufacturing period and cost of the product, and reduces environmental pollution.

In order to achieve the purpose, the invention adopts the following technical scheme: a product direct forming die comprises a female die core and a male die core, wherein the female die core comprises a female die core, the male die core comprises a male die core, a male die base plate and at least two gate inserts, the male die core and the female die core are matched to form a first parting surface, the male die base plate is arranged on one side, back to the female die core, of the male die core, and a second parting surface is formed between the male die base plate and the male die core; a main cavity for injection molding a product body is formed at the first parting surface of the male die core and the female die core; the sprue insert is arranged in a first insert through hole in the male die core, the bottom end of the sprue insert is fixedly connected with the male die base plate, the top end of the sprue insert extends to the first parting surface, the top end of the sprue insert comprises a first end part falling into the main cavity and a second end part located outside the main cavity, a first sub-cavity for injection molding of product support legs is formed between the first end part and the side wall of the first insert through hole, a sprue groove is formed in the second end part, and the side wall of the sprue groove is communicated with the side wall of the first sub-cavity through a submerged sprue channel; and one part of at least two pouring gate inserts is used for pouring, the other part of the pouring gate inserts is used for pouring, and a pouring head groove of the pouring gate insert used for pouring is communicated with a hot runner.

As a further improved technical scheme of the present invention, the male mold core further includes a male mold insert, the male mold insert is disposed in a second insert through hole on the male mold core, a bottom end of the male mold insert is fixedly connected to the male mold backing plate, a top end of the male mold insert extends to the first parting surface and falls into the main mold cavity, a plurality of air-permeable and heat-impermeable exhaust holes are formed at a top end of the male mold insert, and the exhaust holes are communicated to an exhaust channel on the male mold core.

As a further improved technical scheme of the invention, the male die insert comprises a top wall part and a side wall part formed by upwards hollowing from the center of the bottom to the bottom surface of the top wall part, a fixed block is arranged in the side wall part, and the male die insert is fixedly connected with the male die base plate through the fixed block; the side surface of the top wall portion is provided with a radially extending air-entraining hole, the top wall portion is internally provided with a plurality of annular holes which are positioned on the same horizontal plane with the air-entraining hole, the air-entraining hole is communicated with the annular holes, a plurality of small exhaust holes are communicated with the annular holes in an axially extending manner, and the air-entraining hole is communicated with the exhaust channel.

As a further improved aspect of the present invention, the top wall portion includes a solid portion at the center and an air-permeable portion at the periphery, and a plurality of air discharge small holes are dispersed on the air-permeable portion.

As a further improved technical scheme of the invention, the number of the product support legs is greater than that of the gates, the male mold core further comprises a support leg insert, the support leg insert is arranged in a third insert through hole in the male mold core, the bottom end of the support leg insert is fixedly connected with the male mold backing plate, the top end of the support leg insert extends to the first parting surface, the top end of the support leg insert comprises a forming part falling into the main mold cavity, and a second sub-mold cavity for injection molding of the product support legs is formed between the forming part and the side wall of the third insert through hole.

As a further improved technical scheme of the invention, the number of the support leg inlets is three, the number of the gate inlets is also three, and the three gate inlets comprise two gate inlets and one gate outlet, the gate outlet inlets are positioned right opposite to the centers of the two gate inlets, and the three support leg inlets and the three gate inlets are arranged at intervals in the circumferential direction of the male mold inlet.

As a further improved technical scheme of the invention, the size of the inlet gate of the submerged-entry runner on the inlet gate inlet sub in the circumferential direction of the inlet gate of the male die is larger than the size of the outlet gate of the submerged-entry runner on the outlet gate inlet sub in the circumferential direction of the inlet gate of the male die.

As a further improved technical solution of the present invention, the present invention further includes a control structure, wherein the control structure includes a first elastic component and a second elastic component, the first elastic component is embedded in the cavity and elastically abuts against the top surface of the core, the second elastic component is embedded in the core backing plate and elastically abuts against the bottom surface of the core, so that the first parting surface is opened before the second parting surface.

The ejection structure comprises a first ejector pin component for ejecting a product and a second stub bar formed on the outlet sprue insert, a first reset component for resetting the first ejector pin component, a second ejector pin component for ejecting main waste formed in the hot runner and the first stub bar formed on the inlet sprue insert, and a second reset component for resetting the second ejector pin component.

As a further improved technical solution of the present invention, the ejection structure further includes a first guide assembly for guiding the ejection of the first ejector pin assembly and a second guide assembly for guiding the ejection of the second ejector pin assembly.

Compared with the prior art, the gate inlet and the gate outlet of the product direct forming die are designed in a submerged pouring mode, namely, the gate position is designed on the product support leg, so that the formed product is automatically separated from the stub bar, the subsequent CNC machining of the gate is not needed, the manufacturing period and the cost of the product are greatly reduced, and the environmental pollution is reduced; the male die insert arranged on the male die core improves the processing feasibility, and facilitates the later die repair and die change; and a plurality of small air-permeable and heat-impermeable exhaust holes are formed at the top end of the male die insert and communicated to the exhaust channel on the male die core, so that a vacuum suction device can be used for vacuumizing, and the problem of poor appearance caused by air trapping is solved.

Drawings

FIG. 1 is a perspective assembly view of a direct forming mold for products of the present invention;

FIG. 2 is a perspective assembly view of the direct forming mold of the present invention at another angle;

FIG. 3 is a front view of the direct forming mold for the product of the present invention;

FIG. 4 is a top view of the direct forming mold for the product of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 7 is an enlarged view of a portion of FIG. 6;

FIG. 8 is a perspective view of the direct forming mold of the invention with the master mold core inverted upside down;

FIG. 9 is a perspective view of the male mold core of the direct product molding mold of the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 9;

FIG. 11 is a view showing a state of combination of a stub bar, a gate and a product in the direct forming mold for the product of the present invention;

FIG. 12 is an exploded view of one of the products formed in FIG. 11 shown separated from the slug;

FIG. 13 is a perspective view of a product formed by the direct forming mold of the product of the present invention;

FIG. 14 is a perspective view of another angle of the product formed by the direct forming die of the product of the present invention;

FIG. 15 is a perspective view of an in-gate insert in a direct part molding mold of the product of the present invention;

FIG. 16 is a view from another angle of FIG. 15; FIG. 17 is a perspective view of a gate insert in the direct mold for molding a product of the present invention;

FIG. 18 is a view from another angle of FIG. 17;

FIG. 19 is a perspective view of a leg insert in the direct forming mold for the product of the present invention;

FIG. 20 is another angled view of FIG. 19;

FIG. 21 is a perspective view of a core insert in a direct molding mold for a product according to the present invention;

FIG. 22 is an enlarged view of a portion of FIG. 21;

FIG. 23 is an exploded perspective view of a male mold insert in the direct forming mold of the product of the present invention;

FIG. 24 is a view showing the distribution of the male mold insert, the gate insert and the leg insert in the direct molding apparatus for molding a product according to the present invention.

Description of the reference numerals

1-a cavity insert; 2-a core insert; 3-male die backing plate; 4-pouring gate insert; 41-a first end portion; 42-a second end; 43-a runner channel; 44-gate entry; 45-pouring gate and inlet; 440-pouring; 450-pouring a gate; 5-male mold insert; 51-a top wall portion; 511-solid portion; 512-a gas permeable portion; 52-sidewall portions; 53-fixed block; 6-support leg insert; 61-a forming section; 7-a control structure; 71-a first elastic component; 711-first disc spring set; 712-a first hollow sleeve; 713-first alignment pin; 714-a first shim; 72-a second elastic component; 721-a second disc spring set; 722-a second hollow sleeve; 723-a second locating pin; 724-third locating pin; 725-a second gasket; 7131. 7231, 7241-head; 7132. 7232, 7242-a shaft portion; 7221-large diameter part; 7222-small diameter part; 8-an ejection structure; 81-a first ejector pin assembly; 82-a first reset assembly; 83-a second ejector pin assembly; 84-a second reduction assembly; 85-a first guide assembly; 86-a second guide assembly; 811-upper ejector plate; 812-a lower ejector plate; 813-first thimble; 814-a second thimble; 831-third ejector plate; 832-third thimble; 101-a first profile; 102-a second parting plane; 201-main cavity; 202-a first sub-cavity; 203-a second sub-cavity; 301-first in sub via; 302-a second in sub via; 303-third in sub via; 401-vent orifice; 402-a gas guiding hole; 403-an exhaust channel; 501-hot runner; 502-submerged pouring runner; 600-product; 601-product body; 602-product feet; 6021-a first leg; 6022-a second leg; 6023-a third leg; 700-primary waste; 701-a first stub bar; 702-second stub bar.

Detailed Description

Referring to fig. 1 to 24, a mold for directly molding a product includes a female mold core and a male mold core. The female die core comprises a female die core 1, and the male die core comprises a male die core 2, a male die base plate 3, a sprue insert 4, a male die insert 5 and a support leg insert 6.

Referring to fig. 3, 7-10, 15-18, 21 and 22, the core insert 2 and the cavity insert 1 are clamped to form a first parting surface 101. The male die base plate 3 is disposed on a side of the male die core 2 opposite to the female die core 1, and a second parting surface 102 is formed between the male die base plate 3 and the male die core 2. The core insert 2 and the cavity insert 1 form a main cavity 201 for injection molding a product body 601 at the first parting surface 101. The number of the gate inserts 4 is at least two, and the gate inserts are arranged in the first insert through holes 301 on the core insert 2. The bottom end of the sprue insert 4 is fixedly connected with the male die base plate 3, and the top end of the sprue insert 4 extends to the first parting surface 101. The top end of the gate inlet 4 comprises a first end 41 falling into the main cavity 201 and a second end 42 located outside the main cavity 201. A first sub-cavity 202 for injection molding a product leg 602 is formed between the first end portion 41 and a sidewall of the first sub-through hole 301. A sprue groove 43 is formed on the second end portion 42, and a side wall of the sprue groove 43 is communicated with a side wall of the first sub-cavity 202 through a submerged runner 502. At least one part of the two sprue inlets 4 is used for pouring, the rest part of the two sprue inlets 4 is used for pouring, and the sprue grooves 43 of the sprue inlets 4 used for pouring are communicated to the hot runner 501.

Referring to fig. 3, fig. 6, fig. 9, fig. 10 and fig. 21 to fig. 24, the male mold insert 5 is disposed in the second insert through hole 302 of the core insert 2, and is used for improving the processing feasibility, and facilitating the subsequent mold repair and modification. The bottom end of the male die insert 5 is fixedly connected with the male die base plate 3, and the top end of the male die insert 5 extends to the first parting surface 101 and falls into the main cavity 201. In the process of forming the product, the problem of air exhaust needs to be solved, and therefore, a plurality of air exhaust small holes 401 which are air permeable and heat impermeable are formed at the top end of the male mold insert 5, and the air exhaust small holes 401 are communicated to the air exhaust channel 403 on the male mold core 2, so that a vacuum suction device (not shown) can be used for vacuumizing, and the problem of poor appearance caused by air trapping is solved.

Referring to fig. 6 and 23, the male mold insert 5 includes a top wall 51 and a side wall 52 formed by hollowing out upward from the bottom center to the bottom surface of the top wall 51. A fixed block 53 is arranged in the side wall portion 52, and the male die insert 5 is fixedly connected with the male die base plate 3 through the fixed block 53. The side surface of the top wall 51 is formed with a bleed air hole 402 extending along the radial direction, a plurality of annular holes (not shown) are formed in the top wall 51 and are on the same level with the bleed air hole 402, the bleed air hole 402 is communicated with the annular holes, a plurality of small exhaust holes 401 extend along the axial direction and are communicated with the annular holes, and the bleed air hole 402 is communicated with the exhaust channel 403, that is, the small exhaust holes 401 are communicated with the exhaust channel 403 through the bleed air hole 402 and the annular holes, so that exhaust is realized.

The male mold insert 5 is made of cylindrical steel in a 3D printing mode. The diameter of the small vent holes 401 is less than 0.012mm, which ensures air permeability but heat-proof material.

Referring to fig. 23, the top wall 51 includes a solid portion 511 at the center and a ventilation portion 512 at the periphery, and a plurality of small air vents 401 are distributed on the ventilation portion 512, preferably, the diameter of the small air vents 401 is less than 0.012mm, and the thickness is less than 0.7mm, so as to facilitate maintenance and cleaning of dirt; the solid portion 511 is provided to prevent the height dimension of the product after molding from being out of specification due to the vent holes 401 being arranged in the top wall 51.

Referring to fig. 9, 10 and 19 to 22, the leg insert 6 is disposed in the third insert through hole 303 of the core insert 2. The bottom end of the supporting leg insert 6 is fixedly connected with the male die base plate 3, and the top end of the supporting leg insert 6 extends to the first parting surface 101. The top end of the supporting leg insert 6 comprises a forming part 61 falling into the main cavity 201, and a second sub-cavity 203 for injection molding product supporting legs 602 is formed between the forming part 61 and the side wall of the third insert through hole 303. The foot insert 6 functions as a partial foot for molding the product 600.

Referring to fig. 24, in the embodiment, there are three of the leg inserts 6, and there are three of the gate inserts 4. The gate inlet 4 comprises two gate inlet 44 and a gate outlet 45, the gate outlet 45 is located right opposite to the centers of the two gate inlet 44, and the three leg inlets 6 and the three gate inlet 4 are arranged at intervals in the circumferential direction of the male mold inlet 5. Of course, this is only one embodiment, but is not limited thereto. In other alternative embodiments, only one in-gate inlet 44 and one out-gate inlet 45 may be included, so that the number of leg inlets 6 required for forming the product 600 with six legs is four; in another alternative embodiment, two in-gate inlets 44 and two out-gate inlets 45 may be included, so that two pin inlets 6 are required for forming the product 600 having six pins. That is, the number, position and size of the gates can be adjusted appropriately and flexibly for the specifications and sizes of different products.

Referring to fig. 15 to 18, the dimension of the inlet 440 of the submerged-entry runner 502 on the inlet runner 44 in the circumferential direction of the male mold insert 5 is larger than the dimension of the outlet 450 of the submerged-entry runner 502 on the outlet runner insert 45 in the circumferential direction of the male mold insert 5, so as to avoid poor appearance of the product, such as (mold half-set, claw mark, joint line, gas mark, flow line, deformation and gate pull-up).

Referring to fig. 13, 14, 15, 17 and 24, the number of product legs 602 is greater than the total number of in-gates 440 and out-gates 450. In this embodiment, the product legs 602 are six in number and include two first legs 6021 that interface with the inlet opening 440, one second leg 6022 that interfaces with the outlet opening 450, and three third legs 6023 formed adjacent to the leg insert 6.

Referring to fig. 1 to 6, and particularly to fig. 5, the direct forming mold of the present invention further includes a control structure 7. The control structure 7 comprises a first elastic assembly 71 and a second elastic assembly 72. The first elastic component 71 is embedded in the cavity insert 1 and elastically abuts against the top surface of the core insert 2, and the second elastic component 72 is embedded in the core insert backing plate 3 and elastically abuts against the bottom surface of the core insert 2, so that the first parting surface 101 is opened before the second parting surface 102.

Referring to fig. 3, 5 and 6, in an embodiment, the first elastic assembly 71 includes a first disc spring set 711, a first hollow sleeve 712, a first positioning pin 713 and a first spacer 714. Second resilient assembly 72 includes a second disc spring pack 721, a second hollow sleeve 722, a second dowel 723, a third dowel 724, and a second washer 725. The cavity insert 1 is provided with a first accommodating cavity, the first accommodating cavity comprises a first cavity and a second cavity which are vertically communicated and overlapped, the aperture of the first cavity far away from the core insert 2 is smaller, and the aperture of the second cavity close to the core insert 2 is larger. The male die core 2 is provided with a second accommodating cavity, the second accommodating cavity comprises a third cavity and a fourth cavity which are communicated from top to bottom and are superposed, the aperture of the third cavity close to the female die core 1 is larger, and the aperture of the fourth cavity far away from the female die core 1 is smaller. The male die base plate 3 is provided with a third accommodating cavity, the third accommodating cavity comprises a fifth cavity, a sixth cavity and a seventh cavity which are vertically communicated and overlapped, the fifth cavity is close to the male die core 2, the seventh cavity is far away from the male die core 2, and the sixth cavity is positioned between the fifth cavity and the seventh cavity and is communicated with the fifth cavity and the seventh cavity. The first accommodating cavity, the second accommodating cavity and the third accommodating cavity are arranged in an up-down direction in an aligned mode. The head 7131 of the first positioning pin 713 is exposed downward in the third chamber and the rod portion 7132 thereof is inserted upward in the first hollow sleeve 712, that is, the first positioning pin 713 is inserted into the first hollow sleeve 712 from the bottom and then locked into a cavity plate (not shown) above the cavity block 1, so as to keep the first hollow sleeve 712 fixed on the cavity block 1. The first disc spring set 711 is located in the second cavity, sleeved outside the first hollow sleeve 712, and clamped between the top wall of the second cavity and the first gasket 714, that is, the first disc spring set 711 can elastically release to push the core insert 2 downward, so that the first parting surface 101 between the cavity insert 1 and the core insert 2 is opened. The second hollow sleeve 722 has a large diameter portion 7221 and a small diameter portion 7222 integrally downward from the large diameter portion 7221, the head portion 7231 of the second positioning pin 723 is located in the third chamber and the rod portion 7232 thereof is inserted into the second hollow sleeve 722 through the fourth chamber downward from the large diameter portion 7221. The head 7241 of the third alignment pin 724 is located in the seventh chamber and the shaft 7242 thereof is inserted upward from the small diameter portion 7222 and is fixed in the second hollow sleeve 722 by the second gasket 725. The second belleville spring assembly 721 is located in the fifth chamber, sleeved outside the small-diameter portion 7222 of the second hollow sleeve 722 and clamped between the large-diameter portion 7221 and the bottom wall of the fifth chamber. The second disc spring set 721 can elastically release to push the male die backing plate 3 downward so that the second parting surface 102 between the male die backing plate 3 and the male die core 2 is opened. The disc spring can adjust different elastic forces through different superposition installation methods, so that the first parting surface 101 can be ensured to be opened before the second parting surface 102 in the mold opening process.

Referring to fig. 1 to 24 and particularly to fig. 2, 3 and 6, the direct product molding mold of the present invention further includes an ejection structure 8. The ejection structure 8 comprises a first ejector pin assembly 81 for ejecting the product 600 and the second stub bar 702 on the in-gate insert 45, a first reset assembly 82 for resetting the first ejector pin assembly 81, a second ejector pin assembly 83 for ejecting the hot runner 501 and the first stub bar 701 on the in-gate insert 44, and a second reset assembly 84 for resetting the second ejector pin assembly 83.

Specifically, referring to fig. 3 and fig. 6, the first thimble assembly 81 includes an upper thimble plate 811 and a lower thimble plate 812 which are abutted against and fixedly connected with each other from top to bottom, and a plurality of first thimbles 813 and a plurality of second thimbles 814 which have ends fixed between the upper thimble plate 811 and the lower thimble plate 812 and top ends of which pass through the upper thimble plate 811, the male mold backing plate 3 and the male mold insert 2 in sequence from top to bottom. The first thimble 813 and the second thimble 814 are arranged in parallel. The first ejector pins 813 extend upwards to the first sub-cavity 202 and the second sub-cavity 203 and abut against six molded product support legs 602, so that the product 600 can be ejected: the second ejector pin 814 is located in the gate inlet 45 and below the head groove 43 so as to eject the second head 702 molded in the head groove 43 of the gate inlet 45 upward.

Further, referring to fig. 3 and 6, the first resetting assembly 82 is clamped between the upper ejector plate 811 and the male die cushion plate 3 for resetting the first ejector assembly 81. In a specific embodiment, the first return assembly 82 includes a first coil spring and a first guide post guiding the first coil spring.

Specifically, referring to fig. 3 and 6, the second ejector pin assembly 83 includes a third ejector pin plate 831 and a plurality of third ejector pins 832 fixed to the third ejector pin plate 831. A portion of the third ejector pin 832 is located in the gate inlet 44 and below the sprue channel 43 so as to eject the first stub 701 formed in the sprue channel 43 of the gate inlet 44 upward; the other portion of the third ejector pin 832 extends upward below the hot runner 501 for ejecting the main waste 700 molded in the hot runner 501.

Further, referring to fig. 3 and 6, the second returning assembly 84 is clamped between the lower ejector plate 812 and the third ejector plate 831 for returning the second ejector assembly 83. In a specific embodiment, the second return assembly 84 includes a second coil spring and a second guide post for guiding the second coil spring.

Referring to fig. 2, in a preferred embodiment, the ejection structure 8 further includes a first guiding assembly 85 for guiding the ejection of the first ejector pin assembly 81 and a second guiding assembly 86 for guiding the ejection of the second ejector pin assembly 83. The first guide assembly 85 and the second guide assembly 86 each include a middle bracket and a guide post embedded in the middle bracket.

The working principle of the invention is as follows: after the mold is closed, injection molding is performed on the master mold side, thereby molding the product body 601 in the main cavity 201 and molding the product legs 602 in the first and

second sub-cavities

202 and 203. After the product 600 is formed, the elastic force of the first elastic component 71 resists the elastic force of the second elastic component 72, so that the first parting surface 101 is opened first, the product 600 is lifted by using the core insert 2, then the second parting surface 102 is opened again, the core pulling of the gate insert 4 is realized, the connection between the first stub bar 701 at the gate inlet 440 and the product 600 and the connection between the second stub bar 702 at the gate outlet 450 and the product 600 are cut off, and at the moment, the first stub bar 701 and the main waste 700 are still in a connection state; then, the upper ejector plate 811 and the lower ejector plate 812 move upward together, the first ejector pins 813 eject the product 600 upward, and the second ejector pins 814 eject the second stub bar 702 upward together with the product 600 in a state of being cut off from the product 600; then, the third ejector pin plate 831 moves upward, and the third ejector pin 822 ejects the first stub bar 701 upward together with the main scrap 700; and finally, the manipulator sucks the product 600 to swing. The main scrap 700, the first stub bar 701 and the second stub bar 702 must all be ejected out for the next injection molding to give way.

The in-gate 440 and out-gate 450 of the product direct forming mold of the invention adopt a submerged pouring type design mode, namely, the gate position is designed on the product support leg 602, thereby realizing the automatic separation of the formed product 600 and the stub bars 701 and 702 without the need of subsequent CNC gate processing, greatly reducing the manufacturing period and cost of the product 600 and reducing the environmental pollution.

The above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the understanding of the present specification should be based on the technical personnel in the technical field, such as the directional descriptions of "front", "back", "left", "right", "upper", "lower", etc., although the present specification has described the present invention in detail with reference to the above embodiments, the ordinary skilled in the art should understand that the technical personnel in the technical field can still make modifications or equivalent substitutions on the present invention, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.

Claims

1. The utility model provides a product direct forming mould, includes master model mold core and public mould mold core, the master model mold core includes cavity (1), its characterized in that: the male mold core comprises a male mold core (2), a male mold base plate (3) and at least two sprue inserts (4), the male mold core (2) and the female mold core (1) are assembled to form a first parting surface (101), the male mold base plate (3) is arranged on one side, back to the female mold core (1), of the male mold core (2), and a second parting surface (102) is formed between the male mold base plate (3) and the male mold core (2); a main cavity (201) for injection molding a product body (601) is formed on the first parting surface (101) of the core insert (2) and the cavity insert (1); the sprue insert (4) is arranged in a first insert through hole (301) in the core insert (2), the bottom end of the sprue insert (4) is fixedly connected with the core backing plate (3), the top end of the sprue insert (4) extends to the first parting surface (101), the top end of the sprue insert (4) comprises a first end portion (41) falling into the main cavity (201) and a second end portion (42) located outside the main cavity (201), a first sub-cavity (202) for injection molding product support legs (602) is formed between the first end portion (41) and the side wall of the first insert through hole (301), a sprue groove (43) is formed in the second end portion (42), and the side wall of the sprue groove (43) is communicated with the side wall of the first sub-cavity (202) through a submerged sprue channel (502); one part of at least two pouring gate insert parts (4) is used for pouring, the other part of the pouring gate insert parts is used for pouring, and a pouring head groove (43) of the pouring gate insert part (4) used for pouring is communicated to a hot runner (501).

2. The direct product forming mold according to claim 1, wherein: the male die core further comprises a male die insert (5), the male die insert (5) is arranged in a second insert through hole (302) in the male die core (2), the bottom end of the male die insert (5) is fixedly connected with the male die base plate (3), the top end of the male die insert (5) extends to the first parting surface (101) and falls into the main die cavity (201), a plurality of air-permeable and heat-impermeable exhaust small holes (401) are formed in the top end of the male die insert (5), and the exhaust small holes (401) are communicated to an exhaust channel (403) in the male die core (2).

3. The direct product forming mold according to claim 2, wherein: the male die insert (5) comprises a top wall part (51) and a side wall part (52) formed by upwards hollowing from the center of the bottom to the bottom surface of the top wall part (51), a fixed block (53) is arranged in the side wall part (52), and the male die insert (5) is fixedly connected with the male die base plate (3) through the fixed block (53); the side surface of the top wall part (51) is provided with an air guide hole (402) extending along the radial direction, a plurality of annular holes which are positioned on the same horizontal plane with the air guide hole (402) are formed in the top wall part (51), the air guide hole (402) is communicated with the annular holes, a plurality of small exhaust holes (401) extend along the axial direction to be communicated with the annular holes, and the air guide hole (402) is communicated with the exhaust channel (403).

4. The direct product forming mold according to claim 3, wherein: the top wall portion (51) includes a solid portion (511) at the center and an air-permeable portion (512) at the periphery, and a plurality of air-vent holes (401) are dispersed on the air-permeable portion (512).

5. The direct product forming mold according to claim 1, wherein: the quantity of product stabilizer blade (602) is greater than the quantity of runner (440+450), public mould mold core still includes that the stabilizer blade goes into son (6), the stabilizer blade is gone into son (6) and is located in third income son through-hole (303) on public mould benevolence (2), the bottom that the stabilizer blade goes into son (6) with public mould backing plate (3) fixed connection, the top that the stabilizer blade goes into son (6) extends to first parting surface (101), the top that the stabilizer blade goes into son (6) is including falling into shaping portion (61) in main die cavity (201), shaping portion (61) with form second sub-die cavity (203) that are used for injection moulding product stabilizer blade (602) between the lateral wall of third income son through-hole (303).

6. The direct product forming mold according to claim 5, wherein: the supporting leg inlet device is characterized in that the number of the supporting leg inlet devices (6) is three, the number of the gate inlet devices (4) is also three, the gate inlet devices comprise two gate inlet devices (44) and a gate outlet device (45), the gate outlet device (45) is located right opposite to the centers of the two gate inlet devices (44), and the three supporting leg inlet devices (6) and the three gate inlet devices (4) are arranged on the periphery of the male mold inlet device (5) at intervals one by one.

7. The direct product forming mold according to claim 6, wherein: the size of the inlet gate (440) of the submerged-entry runner (502) on the inlet gate inlet (44) in the circumferential direction of the male die inlet (5) is larger than the size of the outlet gate (450) of the submerged-entry runner (502) on the outlet gate inlet (45) in the circumferential direction of the male die inlet (5).

8. The direct product forming mold according to claim 1, wherein: still include control structure (7), control structure (7) include first elastic component (71) and second elastic component (72), first elastic component (71) inlay locate in cavity benevolence (1) and elasticity butt in on the top surface of core benevolence (2), second elastic component (72) inlay locate in core backing plate (3) and elasticity butt in on the bottom surface of core benevolence (2), make first parting surface (101) be prior to second parting surface (102) are opened.

9. The direct product forming mold according to claim 1, wherein: the ejection structure (8) comprises a first ejector pin assembly (81) for ejecting a product (600) and a second stub bar (702) formed on the sprue inlet insert (45), a first reset assembly (82) for resetting the first ejector pin assembly (81), a second ejector pin assembly (83) for ejecting a main waste material (700) formed in the hot runner (501) and a first stub bar (701) formed on the sprue inlet insert (44), and a second reset assembly (84) for resetting the second ejector pin assembly (83).

10. The direct product forming mold according to claim 9, wherein: the ejection structure (8) further comprises a first guide assembly (85) for guiding ejection of the first ejector pin assembly (81) and a second guide assembly (86) for guiding ejection of the second ejector pin assembly (83).