CN217862614U - Injection mold capable of exhausting - Google Patents

Abstract

The utility model discloses an air-dischargeable injection mold, which comprises a front mold, a rear mold, an inclined guide pillar, a slider structure and a spring needle structure, and has a first mold opening state and a second mold opening state; the front die, the rear die, the slider structure and the elastic needle structure enclose a cavity when the dies are closed, the slider structure is movably arranged on the rear die and is provided with a through hole, and the inclined guide post is arranged on the front die and is used for driving the slider structure to move so as to enable the slider structure to complete side core-pulling action or reset the slider structure; the elastic needle structure is movably arranged in the through hole and is used for keeping contact with a formed product in the cavity in a first mold opening state so as to separate the slider structure from the formed product and separating and contacting with the formed product in a second mold opening state; and a first exhaust channel is enclosed between the elastic needle structure and the through hole, and the first exhaust channel communicates the cavity with the outside when the mold is closed. The device can prevent the formed product from sticking the slide block structure, and can assist in exhausting, thereby improving the forming rate and the productivity.

Description

Injection mold capable of exhausting

Technical Field

The utility model relates to an injection mold technical field especially relates to a but exhaust injection mold.

Background

The injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and accurate sizes, and a molded product is obtained by injecting heated and melted plastic into a cavity from an injection molding machine at high pressure and cooling and solidifying the plastic.

At present, in the field of moulding plastics of the main casing body for bluetooth speaker, because the main casing body for bluetooth speaker is many mesh structure, the structure is more complicated, when injection mold die sinking, the slider structure roll-off, many mesh structure can glue slider structure and make this regional position the pull ring appear, warp, situations such as breaking, it gets a difficulty to lead to the shaping article, scrap the product even, and simultaneously, because the material mobility that the main casing body for bluetooth speaker used is relatively poor, produce the predicament situation easily and lead to the shaping article to appear lacking the material, injection molding defects such as scorching, influence the shaping rate of the main casing body for bluetooth speaker.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an injection mold can exhaust, when it can prevent that the shaping article from gluing the slider structure, still can assist the exhaust to can improve the shaping rate and improve the productivity.

The purpose of the utility model is realized by adopting the following technical scheme:

the exhaust injection mold comprises a front mold, a rear mold, an inclined guide pillar, a slider structure and a spring needle structure, and has a first mold opening state and a second mold opening state;

the front die, the rear die, the slide block structure and the elastic needle structure enclose a cavity when the dies are closed, the slide block structure is movably arranged on the rear die and is provided with a through hole, and the inclined guide post is arranged on the front die and is used for driving the slide block structure to move;

the elastic needle structure is movably arranged in the through hole and is used for keeping contact with a molded product in the cavity in the first mold opening state so as to separate the slider structure from the molded product and separating and contacting with the molded product in the second mold opening state;

and a first exhaust channel is defined between the elastic needle structure and the through hole, and the first exhaust channel communicates the cavity with the outside during die assembly.

Further, a second exhaust channel is defined between the slide block structure and the front mold during mold closing, and the second exhaust channel is communicated with the first exhaust channel and the outside.

Further, be equipped with the portion of keeping that sets up one by one from top to bottom on the front mould and dodge the portion, the portion of keeping is in during first die sinking state with bullet needle structure butt and make bullet needle structure and shaping article keep the butt, it is in to dodge the portion supply during second die sinking state bullet needle structure is towards keeping away from the direction of die cavity removes and makes bullet needle structure and shaping article take off the butt.

Furthermore, the holding part is of a plane structure parallel to the direction of the opening and closing die, and the avoiding part is of an inclined plane structure inclined from bottom to top towards the middle of the front die.

Further, the latch structure includes:

the ejector rod is movably arranged in the through hole, and one end of the ejector rod, which is close to the cavity, is provided with an extending state of extending out of the through hole in the first die opening state and a retracting state of retracting into the through hole in the second die opening state;

and the elastic piece is arranged between the ejector rod and the through hole and used for driving the ejector rod to reset from the extending state to the retracting state.

Furthermore, a first limiting end face and a second limiting end face which are arranged at intervals along the length extending direction of the through hole are arranged in the through hole;

the ejector rod is provided with a limiting part which can abut against the first limiting end face, one end of the elastic part abuts against the limiting part, and the other end of the elastic part abuts against the second limiting end face.

Furthermore, the elastic element is a spring sleeved on the ejector rod.

Furthermore, the slider structure is provided with at least two rows of through holes arranged at intervals along the die opening and closing direction, each row of through holes comprises a plurality of through holes, each through hole is provided with the elastic needle structure, and the elastic needle structure and the corresponding elastic needle structure enclose a first exhaust channel.

Furthermore, the number of the slide block structures is multiple, each slide block structure is provided with the through hole, each through hole can be movably provided with the elastic needle structure, and the elastic needle structure and the corresponding elastic needle structure form a first exhaust channel in a surrounding mode.

Further, the slider structure comprises a slider body and an anti-abrasion plate, the slider body is movably arranged on the rear die, and the anti-abrasion plate is arranged on the slider body and abuts against the front die during die assembly.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a but exhaust injection mold, owing to be equipped with first exhaust passage, inject the in-process of melting plastics under the compound die state and toward the die cavity, gaseous in the die cavity can in time arrange to the external world through first exhaust passage, in order to avoid the shaping article to appear lacking the material, injection defects such as scorching, thereby shaping rate and productivity can be improved, and simultaneously, owing to be equipped with the bullet needle structure, when first die sinking state, utilize bullet needle structure and the shaping article that is located the die cavity to keep the butt and supply to be kept away from the slider structure and the shaping article separation of shaping article's orientation removal by oblique guide pillar drive, avoid the shaping article to glue with the slider structure and remove along with the slider structure, thereby can avoid the shaping article to appear the pull ring, warp, situation such as breaking, when second die sinking state, bullet needle structure resets to and takes off the butt with the shaping article and supply the shaping article can smoothly the drawing of patterns, can further improve shaping rate and productivity, in addition, because bullet needle structure and first exhaust passage all locate in same perforating hole, the perforating hole is dual-purpose structure, make the slider structure also do benefit to make the slider structure and more make and more the simple and can reduce this injection mold cost that can exhaust.

Drawings

Fig. 1 is a schematic structural view of the ventable injection mold of the present invention in a mold closing state;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a schematic structural view of the air-dischargeable injection mold of the present invention in a first mold opening state;

FIG. 4 is a partial enlarged view of the area B in FIG. 3;

fig. 5 is a schematic structural view of the exhaust injection mold of the present invention in the second mold opening state.

In the figure: 10. a front mold; 11. a holding section; 12. an avoidance part; 20. a rear mold; 30. an inclined guide post; 40. a slider structure; 41. a slider body; 411. a through hole; 4111. a first limit end face; 4112. a second limiting end face; 42. a wear plate; 50. a spring needle structure; 51. a top rod; 511. a limiting part; 52. an elastic member; 60. a first exhaust passage; 70. a second exhaust passage; 80. a molded article.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Referring to fig. 1 to 5, an air-dischargeable injection mold according to a preferred embodiment of the present invention is shown, including a front mold 10, a rear mold 20, an inclined guide pillar 30, a slider structure 40, and a spring pin structure 50, and having a first mold opening state and a second mold opening state; the front mold 10, the rear mold 20, the slider structure 40 and the elastic needle structure 50 enclose a cavity for forming the molded product 80 during mold closing, the slider structure 40 is movably arranged on the rear mold 20 and is provided with a through hole 411, and the inclined guide post 30 is arranged on the front mold 10 and is used for driving the slider structure 40 to move so as to enable the slider structure 40 to complete side core pulling action or enable the slider structure 40 to reset; the elastic needle structure 50 can be movably arranged in the through hole 411 and is used for keeping contact with the formed product 80 in the cavity in a first mold opening state so as to separate the slide block structure 40 from the formed product 80 and separating from contact with the formed product 80 in a second mold opening state; the elastic pin structure 50 and the through hole 411 enclose a first exhaust channel 60, and the first exhaust channel 60 communicates the cavity with the outside when the mold is closed.

The utility model discloses a but exhaust injection mold, owing to be equipped with first exhaust passage 60, under the compound die state and toward the in-process of injecting melting plastics in the die cavity, gaseous in the die cavity can in time arrange to external world through first exhaust passage 60, in order to avoid the short of material to appear in shaping article 80, injection defects such as scorching, thereby shaping rate and productivity can be improved, simultaneously, owing to be equipped with bullet needle structure 50, when first die sinking state, utilize bullet needle structure 50 and the shaping article 80 that is located the die cavity to keep the butt and supply to be kept away from the slider structure 40 and the separation of shaping article 80's orientation removal by oblique guide pillar 30 drive, avoid shaping article 80 and slider structure 40 to glue together and remove along with slider structure 40, thereby can avoid shaping article 80 appearance pull ring, warp, situation such as breaking, also when second die sinking state, bullet needle structure 50 resets to and break away from shaping article 80 and supply shaping article 80 to can smoothly demould, can further improve shaping rate and productivity, in addition, because bullet needle structure 50 and first exhaust passage 60 all locate same slider 411, thereby the simple and easy manufacturing structure of making is the dual-purpose mold structure 411, thereby make the simple and the perforating hole structure of the simple and can reduce.

Specifically, in the present embodiment, the moving direction of the slider structure 40 is perpendicular to the mold opening and closing direction of the ventable injection mold, and the length extending direction of the through hole 411 is parallel to the moving direction of the slider structure 40. Of course, in other embodiments, the moving direction of the slide block structure 40 may be at an angle to the mold opening and closing direction of the ventable injection mold.

Referring to fig. 1 and 2, in the present embodiment, the slider structure 40 and the front mold 10 enclose a second exhaust passage 70 when the mold is closed, and the second exhaust passage 70 communicates the first exhaust passage 60 with the outside. In this structure, the second exhaust channel 70 is disposed between the slider structure 40 and the front mold 10, which is beneficial to reducing the manufacturing difficulty of the second exhaust channel 70, and thus the manufacturing cost of the exhaust injection mold can be further reduced. In other embodiments, the second exhaust passage 70 may be provided only on the front mold 10 or only on the slider structure 40, without being limited thereto.

Referring to fig. 1 to 4, in the present embodiment, the front mold 10 is provided with a holding portion 11 and an avoiding portion 12 which are arranged one by one from top to bottom, specifically, as shown in fig. 3 and 4, the holding portion 11 abuts against the pogo pin structure 50 in the first mold opening state to keep the pogo pin structure 50 and the molded product 80 abutting against each other, so that the slider structure 40 and the molded product 80 are separated from each other, as shown in fig. 5, the avoiding portion 12 moves the pogo pin structure 50 in a direction away from the cavity in the second mold opening state to separate the pogo pin structure 50 and the molded product 80 from each other, that is, the pogo pin structure 50 and the molded product 80 are separated from each other, so that the molded product 80 is ejected, and smooth mold release is achieved.

Referring to fig. 2, it can be understood that the pogo pin structure 50 is also in contact with the molded article 80 when the ventable injection mold is in the mold-closed state, and at this time, the end of the pogo pin structure 50 away from the cavity is also in contact with the holding portion 11.

Referring to fig. 2 and 4, in the present embodiment, the holding portion 11 has a planar structure parallel to the mold opening and closing direction, and the escape portion 12 has an inclined surface structure inclined from bottom to top toward the middle of the front mold 10.

Referring to fig. 2 and 4, in the present embodiment, the latch structure 50 includes: a ram 51 movably disposed in the through hole 411, and having an extending state (see fig. 4) extending out of the through hole 411 in a first mold opening state and a retracting state retracting into the through hole 411 in a second mold opening state at an end close to the cavity; and an elastic member 52 provided between the rod 51 and the through hole 411 for driving the rod 51 to return from the extended state to the retracted state so as to disengage the rod 51 from the molded article 80, that is, to separate the rod 51 from the molded article 80.

Referring to fig. 2 and 4, in the present embodiment, a first limiting end surface 4111 and a second limiting end surface 4112 are disposed in the through hole 411 at intervals along the length extending direction thereof; the top rod 51 is provided with a limit portion 511 capable of abutting against the first limit end surface 4111, one end of the elastic member 52 abuts against the limit portion 511, and the other end of the elastic member 52 abuts against the second limit end surface 4112. This structure can realize carrying out the axial spacingly to ejector pin 51 to avoid ejector pin 51 to break away from perforating hole 411, simultaneously, make elastic component 52 can drive ejector pin 51 after being compressed and reset, simple structure is practical, and the reliability is high.

In the embodiment, the elastic member 52 is a spring sleeved on the top rod 51 to achieve reliable installation of the elastic member 52, so that the operational reliability of the pogo pin structure 50 can be improved. In other embodiments, the spring may be only disposed between the limiting portion 511 and the second limiting end surface 4112, and in other embodiments, the elastic member 52 may also be a spring structure disposed between the limiting portion 511 and the second limiting end surface 4112.

In this embodiment, three rows of through holes 411 are formed in the slider structure 40 at intervals along the mold opening and closing direction, each row of through holes 411 includes a plurality of through holes 411, each through hole 411 is provided with the pogo pin structure 50 and encloses a first exhaust channel 60 with the corresponding pogo pin structure 50, and the three rows of pogo pin structures 50 arranged at intervals can uniformly apply force to the molded product 80, so that the slider structure 40 is smoothly separated from the molded product 80, and meanwhile, the three rows of first exhaust channels 60 in the slider structure 40 can rapidly exhaust gas in the cavity, which is beneficial to improving the molding rate and productivity of the molded product 80. In other embodiments, the slider structure 40 may have two rows of through holes 411 or more than four rows of through holes 411, but is not limited thereto.

Referring to fig. 1, in the present embodiment, the number of the slider structures 40 is multiple, each slider structure 40 is provided with a through hole 411, each through hole 411 is movably provided with an elastic pin structure 50 and encloses a first exhaust channel 60 with the corresponding elastic pin structure 50.

Specifically speaking, when this injection mold that can exhaust is used for the main casing body for the shaping bluetooth speaker, slider structure 40 is equipped with four, specifically can set for slider structure 40's quantity according to actual molded product.

In the present embodiment, the slider structure 40 includes a slider body 41 and a wear-resistant plate 42, the slider body 41 is movably disposed on the rear mold 20, and the wear-resistant plate 42 is disposed on the slider body 41 and abuts against the front mold 10 when the molds are closed. The wear-resistant plate 42 can protect the slider body 41, so that the slider body 41 does not directly rub the front mold 10 during mold closing, thereby prolonging the service life of the slider body 41.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (10)

1. The exhaust injection mold is characterized by comprising a front mold, a rear mold, an inclined guide pillar, a slider structure and a spring needle structure, and has a first mold opening state and a second mold opening state;

the front die, the rear die, the slider structure and the elastic needle structure enclose a cavity when the dies are closed, the slider structure is movably arranged on the rear die and is provided with a through hole, and the inclined guide post is arranged on the front die and is used for driving the slider structure to move;

the elastic needle structure is movably arranged in the through hole and is used for keeping contact with a molded product in the cavity in the first mold opening state so as to separate the slider structure from the molded product and separating and contacting with the molded product in the second mold opening state;

and a first exhaust channel is defined between the elastic needle structure and the through hole, and the first exhaust channel communicates the cavity with the outside during die assembly.

2. The ventable injection mold of claim 1, wherein the slide structure, when closed, and the front mold define a second vent path therebetween, the second vent path communicating the first vent path with the environment.

3. The ventable injection mold according to claim 1, wherein the front mold is provided with a holding portion and an escape portion, the holding portion is arranged one by one from top to bottom, the holding portion abuts against the pogo pin structure in the first mold opening state to hold the pogo pin structure in abutment with the molded article, and the escape portion moves in a direction away from the cavity in the second mold opening state to release the pogo pin structure from the molded article in abutment.

4. The vented injection mold of claim 3, wherein the holding portion has a planar structure parallel to the mold opening and closing direction, and the relief portion has a slope structure inclined from bottom to top toward the middle of the front mold.

5. The ventable injection mold of claim 1, wherein said pogo pin structure comprises:

the ejector rod is movably arranged in the through hole, and one end of the ejector rod, which is close to the cavity, is provided with an extending state of extending out of the through hole in the first die opening state and a retracting state of retracting into the through hole in the second die opening state;

and the elastic piece is arranged between the ejector rod and the through hole and used for driving the ejector rod to reset from the extending state to the retracting state.

6. The ventable injection mold of claim 5, wherein a first limit end face and a second limit end face are provided in the through hole at intervals along the length extension direction;

the ejector rod is provided with a limiting part which can abut against the first limiting end face, one end of the elastic piece abuts against the limiting part, and the other end of the elastic piece abuts against the second limiting end face.

7. The ventable injection mold of claim 5, wherein said resilient member is a spring disposed around said top pin.

8. The vented injection mold of claim 1, wherein the slider structure has at least two rows of through holes spaced apart along a mold opening and closing direction, each row of through holes comprises a plurality of through holes, each through hole has the pogo pin structure and encloses the first venting channel with the corresponding pogo pin structure.

9. The ventable injection mold of claim 1, wherein said plurality of slide structures are provided, each of said slide structures is provided with said through hole, each of said through holes is movably provided with said pogo pin structure and encloses said first venting channel with said pogo pin structure.

10. The ventable injection mold of claim 1, wherein said slide structure comprises a slide body movably disposed on said back mold and a wear plate disposed on said slide body and abutting said front mold when closed.

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