CN215040019U - A quick accuse temperature injection mold for plastic production - Google Patents

Abstract

The utility model discloses a quick temperature control injection mold for plastic production, which belongs to the technical field of plastic part injection molds, and comprises a lower die holder and an upper die holder, wherein the lower die holder is fixed inside the lower die holder, the lower side of the upper die holder is fixed with an upper die matched with the lower die, a cavity is formed between the lower die and the upper die, a core is fixed at the inner bottom of the lower die, a filling port is arranged at the center of the upper die holder, a plurality of electromagnets which are uniformly distributed are embedded and fixed on the end wall at the top end of the lower die holder, the heat-conducting medium inside an S-shaped circulating heating pipeline can be utilized to carry out constant temperature heating on sizing materials in the cavity of the die, the heat-conducting medium has long retention time inside the heat-conducting medium and large contact area, thereby greatly improving the constant temperature heating effect, and a plurality of groups of heat-conducting guide plates which are arranged in an annular structure can exert spiral guide effect on the heat-conducting medium, the heat-conducting medium generates an eddy effect in the heat-conducting medium, and the heat-conducting efficiency is further improved.

Description

A quick accuse temperature injection mold for plastic production

Technical Field

The utility model relates to a plastic part injection mold technical field, more specifically say, relate to a quick accuse temperature injection mold for plastic production.

Background

Definition of the plastics: the product is a solid and molten liquid in the manufacturing process, so that the product can be mechanically heated to melt, pressurized to flow and cooled to solidify to form various shapes, and the huge and variable material group is called plastic.

With the rapid development of the plastic industry and the continuous improvement of the plastic performance, plastic parts are widely applied, traditional metal parts are replaced in different fields of the plastic parts, and one plastic part with reasonable design can often replace a plurality of traditional metal parts, so that the aims of simplifying the product structure and saving the manufacturing cost are fulfilled. Plastic parts are widely used in every field of daily life, such as household appliances, instruments and meters, electric wires and cables, construction equipment, communication electronics, automobile industry, aerospace, daily hardware and the like.

The mould is a tool used in the injection molding process of the plastic part, during the injection molding, the mould is clamped on an injection molding machine, the molten plastic is injected into a forming mould cavity and is cooled and shaped in the cavity, then an upper mould and a lower mould are separated, a product is ejected out of the mould cavity through an ejection system and leaves the mould, finally the mould is closed again for the next injection molding, and the whole injection molding process is carried out in a circulating way. In the process of injection molding by using a mold, the mold is required to heat the sizing material at a constant temperature, and the existing constant-temperature heating mold generally has the defects of poor heating effect and low heat conduction efficiency, so that the injection molding processing efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

Problem to exist among the prior art, the utility model aims at providing a quick accuse temperature injection mold for plastic production, can realize utilizing the inside heat-conducting medium of S-shaped circulation heating pipeline to carry out the constant temperature heating to the sizing material of mould die cavity, heat-conducting medium is long at its inside dwell time, area of contact is big, thereby promote the constant temperature heating effect greatly, and the multiunit is the heat conduction guide plate that annular structure arranged, can exert spiral guide effect to heat-conducting medium, make heat-conducting medium produce the vortex effect in its inside, further promote heat conduction efficiency.

In order to solve the above problems, the utility model adopts the following technical proposal.

A quick temperature control injection mold for plastic production comprises a lower mold base and an upper mold base, wherein a lower mold is fixed inside the lower mold base, an upper mold matched with the lower mold is fixed on the lower side of the upper mold base, a cavity is formed between the lower mold and the upper mold, a core is fixed at the inner bottom of the lower mold, a filling port is formed in the center of the upper mold base, a plurality of uniformly distributed electromagnets are fixedly embedded into the end wall of the top end of the lower mold base, permanent magnets arranged corresponding to the electromagnets are fixedly embedded into the lower surface of the upper mold base, the electromagnets are magnetically attracted with the permanent magnets when the electromagnets are powered on, a circulating heating cavity is formed inside the lower mold, the circulating heating cavity is a cavity formed by connecting a plurality of U-shaped structures, S-shaped circulating heating pipelines are placed inside the circulating heating cavity at equal intervals, and a plurality of water guide structures are arranged inside the S-shaped circulating heating pipelines, each group of water guide structures comprises a plurality of heat conduction guide plates which are annularly arranged on the S-shaped circulating heating pipeline, the heat conduction guide plates are obliquely fixed on the inner wall of the S-shaped circulating heating pipeline, an included angle between each heat conduction guide plate and the axial lead of the S-shaped circulating heating pipeline is 45 degrees, a circulating joint connected with the S-shaped circulating heating pipeline is arranged on one side of the lower die holder, a heat conduction net is arranged inside the die core, a plurality of groups of graphene heat conduction columns communicated with the inside of the circulating heating cavity are arranged inside the lower die, the bottom ends of the graphene heat conduction columns are in contact with the S-shaped circulating heating pipeline, and the top ends of the graphene heat conduction columns are in contact with the heat conduction net. When the mold is used, glue is injected into the core through the injection port, the lower mold and the upper mold are assembled to perform injection molding, the arranged electromagnet can be magnetically attracted and connected with the permanent magnet when being electrified, the connection stability of the lower mold seat and the upper mold seat is ensured, in the injection molding process, heating media are circularly led into the S-shaped circulating heating pipeline in the circulating heating cavity, the glue is heated at constant temperature, the S-shaped circulating heating pipeline can greatly prolong the retention time of the heat-conducting media in the S-shaped circulating heating pipeline, the contact area of the heat-conducting media and the lower mold is increased, so that the heating effect is greatly improved, a plurality of groups of heat-conducting guide plates which are arranged in an annular structure are arranged in the S-shaped circulating heating pipeline, a spiral guide effect can be exerted on the heat-conducting media, the heat-conducting media generate an eddy effect in the S-shaped circulating heating pipeline, the heat-conducting media are fully contacted with the inner wall of the heat-conducting media, the heat-conducting efficiency is further improved, and the heat-conducting efficiency can be further accelerated by arranging the graphene heat-conducting columns and the heat-conducting net, the constant temperature effect of the mould is improved. This scheme can realize utilizing the inside heat-conducting medium of S-shaped circulation heating pipeline to carry out the constant temperature heating to the sizing material of mould die cavity, and heat-conducting medium is long, area of contact is big at its inside dwell time to promote the constant temperature heating effect greatly, and the multiunit is the heat conduction guide plate that the loop configuration was arranged, can exert spiral guide effect to heat-conducting medium, make heat-conducting medium produce the vortex effect in its inside, further promote heat conduction efficiency.

Furthermore, the junction of lower mould and last mould is equipped with the multiunit guide post, conveniently carries out the compound die of lower mould and last mould, improves the positioning accuracy.

Furthermore, the lower die holder and the upper die holder are made of heat-insulating materials, a heat-insulating layer is attached to the inner wall of the lower die holder, and a sealing heat-insulating layer is arranged at the contact position of the lower die holder and the upper die holder, so that the heat-insulating effect of the lower die holder and the upper die holder can be effectively improved, and the heat loss is effectively reduced.

Further, the installation cavity has been seted up to the inside of lower mould, and the installation cavity is inside to be equipped with auxiliary electric heating layer, utilizes auxiliary electric heating layer can carry out auxiliary heating, promotes the heating effect.

Further, the central department of going up the mould sets up the infundibulate blanking hole that is linked together with the sprue, and the embedding is provided with the feeding zone of heating on the inner wall in infundibulate blanking hole, and the blanking structure that leaks hopper-shaped can effectively avoid the unloading to block up, and the feeding zone of heating can heat the sizing material of whereabouts, further promotes constant temperature heating effect.

Compared with the prior art, the utility model has the advantages of:

(1) the scheme can realize constant-temperature heating of the sizing material in the die cavity by utilizing the heat-conducting medium in the S-shaped circulating heating pipeline, the heat-conducting medium has long retention time and large contact area in the S-shaped circulating heating pipeline, so that the constant-temperature heating effect is greatly improved, and the spiral guide effect can be exerted on the heat-conducting medium by the plurality of groups of heat-conducting guide plates arranged in the annular structure, so that the heat-conducting medium generates an eddy effect in the S-shaped circulating heating pipeline, and the heat-conducting effect is further improved;

(2) a plurality of groups of guide posts are arranged at the joint of the lower die and the upper die, so that the lower die and the upper die can be conveniently closed, and the positioning accuracy is improved;

(3) the lower die base and the upper die base are both made of heat-insulating materials, a heat-insulating layer is attached to the inner wall of the lower die base, and a sealing heat-insulating layer is arranged at the contact position of the lower die base and the upper die base, so that the heat-insulating effect of the lower die base and the upper die base can be effectively improved, and the heat loss can be effectively reduced;

(4) an installation cavity is formed in the lower die, an auxiliary electric heating layer is arranged in the installation cavity, auxiliary heating can be performed by using the auxiliary electric heating layer, and the heating effect is improved;

(5) hopper-shaped's blanking structure can effectively avoid the unloading to block up, and the feeding zone of heating can heat the sizing material of whereabouts, further promotes the constant temperature heating effect.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a schematic structural view of the middle circulation heating cavity of the present invention;

FIG. 3 is a schematic view of the vertical section structure of the middle circulation heating cavity of the present invention;

fig. 4 is a schematic diagram of the separated state of the present invention.

The reference numbers in the figures illustrate:

the device comprises a lower die base 1, an upper die base 2, a permanent magnet 3, an electromagnet 4, a lower die 5, an upper die 6, a die cavity 7, a guide column 8, a die core 9, an auxiliary electric heating layer 10, a circulating heating cavity 11, a circulating joint 12, a graphene heat conduction column 13, a heat conduction net 14, a filling opening 15, a funnel-shaped blanking hole 16, a feeding heating layer 17 and a heat conduction guide plate 18.

Detailed Description

The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the present invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all belong to the protection scope of the utility model.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-4, a rapid temperature control injection mold for plastic production comprises a lower mold base 1 and an upper mold base 2, wherein a lower mold 5 is fixed inside the lower mold base 1, an upper mold 6 matched with the lower mold 5 is fixed on the lower side of the upper mold base 2, a cavity 7 is formed between the lower mold 5 and the upper mold 6, a mold core 9 is fixed on the inner bottom of the lower mold 5, a filling opening 15 is formed in the center of the upper mold base 2, a plurality of uniformly distributed electromagnets 4 are embedded and fixed on the end wall of the top end of the lower mold base 1, permanent magnets 3 corresponding to the electromagnets 4 are embedded and fixed on the lower surface of the upper mold base 2, the electromagnets 4 are magnetically attracted to the permanent magnets 3 when being powered on, a circulating heating cavity 11 is formed by connecting a plurality of U-shaped structures, S-shaped circulating heating pipelines are placed inside the circulating heating cavity 11 at equal intervals, a plurality of water guide structures are arranged inside the S-shaped circulating heating pipelines, every water guide structure all includes a plurality of heat conduction guide plates 18 that are the annular and arrange at S-shaped circulation heating pipeline, heat conduction guide plates 18 slope is fixed on S-shaped circulation heating pipeline' S inner wall, and heat conduction guide plates 18 is 45 with the contained angle of S-shaped circulation heating pipeline axial lead, one side of die holder 1 is equipped with the circulation joint 12 that is connected with S-shaped circulation heating pipeline, the inside of core 9 is equipped with heat conduction net 14, the inside of lower mould 5 is equipped with the inside graphite alkene heat conduction post 13 that is linked together of multiunit and circulation heating cavity 11, graphite alkene heat conduction post 13 bottom contacts with S-shaped circulation heating pipeline, the top of graphite alkene heat conduction post 13 contacts with heat conduction net 14. When the mold is used, glue is injected into the mold core 9 through the injection port 15, the lower mold 5 and the upper mold 6 are closed to carry out injection molding, the arranged electromagnet 4 can be magnetically attracted and connected with the permanent magnet 3 when being electrified, the connection stability of the lower mold base 1 and the upper mold base 2 is ensured, in the injection molding process, heating media are circularly led into the S-shaped circulating heating pipeline in the circulating heating cavity 11 to heat the glue at constant temperature, the S-shaped circulating heating pipeline can greatly increase the retention time of the heat-conducting media in the S-shaped circulating heating pipeline, the contact area of the heat-conducting media and the lower mold 5 is increased, so that the heating effect is greatly improved, a plurality of groups of heat-conducting guide plates 18 which are arranged in an annular structure are arranged in the S-shaped circulating heating pipeline, the spiral guide effect can be exerted on the heat-conducting media, the heat-conducting media can generate the eddy effect in the S-shaped circulating heating pipeline, the heat-conducting media can be fully contacted with the inner wall of the S-shaped circulating heating pipeline, and the heat-conducting efficiency is further improved, the graphene heat-conducting columns 13 and the heat-conducting net 14 are arranged, so that the heat conduction efficiency can be further accelerated, and the constant temperature effect of the mold is improved. This scheme can realize utilizing the inside heat-conducting medium of S-shaped circulation heating pipeline to carry out the constant temperature heating to the sizing material of mould die cavity, and heat-conducting medium is long, area of contact is big at its inside dwell time to promote the constant temperature heating effect greatly, and the multiunit is heat conduction guide plate 18 that the loop configuration arranged, can exert spiral guide effect to heat-conducting medium, make heat-conducting medium produce the vortex effect in its inside, further promote heat conduction efficiency.

Referring to fig. 1, a plurality of sets of guide posts 8 are arranged at the joint of the lower die 5 and the upper die 6, so that the lower die 5 and the upper die 6 can be conveniently closed, and the positioning accuracy is improved.

Referring to fig. 1, the lower die holder 1 and the upper die holder 2 are both made of heat insulating materials, a heat insulating layer is attached to the inner wall of the lower die holder 1, and a sealing heat insulating layer is arranged at the contact position of the lower die holder 1 and the upper die holder 2, so that the heat insulating effect of the lower die holder 1 and the upper die holder 2 can be effectively improved, and the heat loss can be effectively reduced.

Referring to fig. 1, an installation cavity is formed inside the lower mold 5, and an auxiliary electric heating layer 10 is disposed inside the installation cavity, so that the auxiliary electric heating layer 10 can be used for auxiliary heating to improve the heating effect.

Referring to fig. 1, a funnel-shaped blanking hole 16 communicated with the injection port 15 is formed in the center of the upper die 6, and a feeding heating layer 17 is embedded in the inner wall of the funnel-shaped blanking hole 16, so that blanking blockage can be effectively avoided due to the funnel-shaped blanking structure, the falling rubber material can be heated by the feeding heating layer 17, and the constant temperature heating effect is further improved.

The above; is only a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; according to the technical scheme of the utility model and the improvement conception, equivalent substitution or change is carried out; are all covered by the protection scope of the utility model.

Claims (5)

1. The utility model provides a quick accuse temperature injection mold for plastic production, includes die holder (1) and upper die base (2), the inside of die holder (1) is fixed with lower mould (5), the downside of upper die base (2) be fixed with lower mould (5) assorted last mould (6), form die cavity (7) between lower mould (5) and last mould (6), the interior bottom of lower mould (5) is fixed with core (9), the center department of upper die base (2) has seted up sprue (15), its characterized in that: the top end wall of die holder (1) is gone up the embedding and is fixed with a plurality of evenly distributed' S electro-magnet (4), the lower surface embedding of upper die base (2) is fixed with permanent magnet (3) that correspond the setting with electro-magnet (4), set up with permanent magnet (3) magnetism when electro-magnet (4) circular telegram, circulation heating cavity (11) have been seted up to the inside of lower mould (5), circulation heating cavity (11) are the cavity of being formed by the connection of a plurality of U-shaped structures, S-shaped circulation heating pipe has been placed to circulation heating cavity (11) inside, the inside equidistance of S-shaped circulation heating pipe sets up multiunit water guide structure, and every water guide structure of group all includes a plurality of heat conduction guide plate (18) that are the annular and arrange at S-shaped circulation heating pipe, heat conduction guide plate (18) slope is fixed on the inner wall of S-shaped circulation heating pipe, and the contained angle of heat conduction guide plate (18) and S-shaped circulation heating pipe axial lead is 45, one side of lower die holder (1) is equipped with the circulation that is connected with S-shaped circulation heating pipeline and connects (12), the inside of core (9) is equipped with heat conduction net (14), the inside of lower mould (5) is equipped with inside graphite alkene heat conduction post (13) that are linked together of multiunit and circulation heating cavity (11), graphite alkene heat conduction post (13) bottom contacts with S-shaped circulation heating pipeline, the top of graphite alkene heat conduction post (13) contacts with heat conduction net (14).

2. The fast temperature control injection mold for plastic production according to claim 1, wherein: and a plurality of groups of guide posts (8) are arranged at the joint of the lower die (5) and the upper die (6).

3. The fast temperature control injection mold for plastic production according to claim 1, wherein: the heat insulation structure is characterized in that the lower die holder (1) and the upper die holder (2) are both made of heat insulation materials, a heat insulation layer is attached to the inner wall of the lower die holder (1), and a sealing heat insulation layer is arranged at the contact position of the lower die holder (1) and the upper die holder (2).

4. The fast temperature control injection mold for plastic production according to claim 1, wherein: the mounting cavity is formed in the lower die (5), and the auxiliary electric heating layer (10) is arranged in the mounting cavity.

5. The fast temperature control injection mold for plastic production according to claim 1, wherein: the center of the upper die (6) is provided with a funnel-shaped blanking hole (16) communicated with the injection port (15), and the inner wall of the funnel-shaped blanking hole (16) is embedded with a feeding heating layer (17).

Images