CN116653229A

CN116653229A - High-efficient even injection mold

Info

Publication number: CN116653229A
Application number: CN202310602788.2A
Authority: CN
Inventors: 周太义; 莫显胜; 莫颖微
Original assignee: Shenzhen Xiangruitong Plastic Packaging Co ltd
Current assignee: Shenzhen Xiangruitong Plastic Packaging Co ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-08-29

Abstract

The invention discloses a high-efficiency uniform injection mold, which belongs to the technical field of injection molds and comprises an injection mold mechanism, wherein the injection mold mechanism comprises a fixed mold assembly and a movable mold assembly, the fixed mold assembly comprises a fixed mold bottom plate, two square irons are arranged on the fixed mold bottom plate, a fixed mold frame and a fixed mold core are jointly arranged on the two square irons through positioning pins, the movable mold assembly comprises a movable mold bottom plate and a movable mold frame, a movable mold core is embedded in a groove at the lower side of the movable mold frame, the movable mold core and the fixed mold core form a cavity, and temperature control pipe fittings are arranged on the movable mold frame and the fixed mold frame.

Description

High-efficient even injection mold

Technical Field

The invention mainly relates to the technical field of injection molds, in particular to an efficient and uniform 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 precise dimensions, the injection molding is a processing method used for mass production of parts with complex shapes, specifically, heated and melted plastics are injected into a mold cavity by an injection molding machine at high pressure, after cooling and solidification, a formed product is obtained, the injection mold consists of a movable mold and a fixed mold, the movable mold is arranged on a movable mold plate of the injection molding machine, the fixed mold is arranged on a fixed mold plate of the injection molding machine, the movable mold and the fixed mold are closed to form a pouring system and a cavity during injection molding, and the movable mold and the fixed mold are separated to take out the plastic products during mold opening, so that the design and manufacturing workload of the heavy mold is reduced, and the standard mold frame is mostly adopted for the injection molding mold.

In the process of injecting plastics to the mould intracavity, injection molding machine penetrates mouth and the sprue on the movable mould, then annotate the sprue with the material, material shaping in the die cavity thereupon, because the lower extreme export of sprue is the mould benevolence inner wall upside that is located the movable mould, during the injection, the molten state material can evenly distributed in the die cavity finally, mainly receive the flowable influence, the mobility of general material, depend on self material, ambient temperature and the influence of the space size that locates, in the die cavity, the lower extreme export remote region apart from the sprue, because inhomogeneous, the product of final shaping will appear in general local thinner condition, thereby the quality of plastics product has been influenced.

Disclosure of Invention

The technical scheme of the invention aims at the technical problem that the prior art is too single, provides a solution which is obviously different from the prior art, and particularly mainly provides a high-efficiency uniform injection mold which is used for solving the technical problem that in the prior art, when molten materials are injected from the top of the inner wall of a cavity, uneven conditions are easy to occur, the local thinness of a product is caused, and the quality of the product is influenced.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a high-efficient even injection mold, includes injection mold mechanism, injection mold mechanism includes cover half subassembly and movable mould subassembly, the cover half subassembly includes the cover half bottom plate, be provided with two parallel distribution's square iron on the cover half bottom plate, two install the fixed die carrier jointly through the locating pin on the square iron, the embedding has the cover half benevolence in the recess of fixed die carrier upside, the movable mould subassembly includes movable mould bottom plate and movable die carrier, the embedding has the movable mould benevolence in the recess of movable die carrier downside, and movable mould benevolence and cover half benevolence constitute the die cavity, the cover half benevolence is provided with L shape passageway all around respectively, the intermediate position of movable mould benevolence is provided with cross pipe fitting, and cross pipe fitting below is provided with first stand pipe, four summit interface positions of cross pipe fitting all are provided with the second stand pipe, and the second stand pipe fitting agrees with the vertical part of corresponding die carrier L shape passageway, all be provided with the temperature control pipe fitting on the movable die carrier and the fixed.

Preferably, two be provided with backing plate and limiting plate between the square iron, the backing plate is located the cover half bottom plate upside, four apex angle positions of backing plate upper surface all are provided with the stand, every all cup joint the spring on the stand, the intermediate position of backing plate upper surface is provided with a plurality of ejector pins, and the ejector pin is the dot matrix and arranges, and ejector pin and stand all pass the round hole on the limiting plate.

Preferably, a plurality of through holes are formed in the fixed die core and the fixed die frame, each through hole corresponds to the ejector rod one by one, and positioning guide posts are arranged at four vertex angle positions on the upper side of the fixed die frame.

Preferably, four vertex angle positions of the movable mould frame are respectively provided with a positioning guide sleeve, and each positioning guide sleeve is in sliding connection with a corresponding positioning guide post.

Preferably, the movable mould frame is connected with the movable mould bottom plate through a locating pin, a main runner is arranged at the middle position of the movable mould bottom plate, and the main runner penetrates through a round hole at the middle position of the movable mould frame to be connected with the upper end of the cross-shaped pipe fitting of the movable mould core.

Preferably, each temperature control pipe fitting comprises a main pipe body and an auxiliary pipe body, a connecting pipe is arranged between the two auxiliary pipe bodies, each main pipe body is located in a mounting hole, and the mounting holes are formed in the side walls of the movable die frame and the fixed die frame.

Preferably, a preformed hole is formed in the middle of the lower side of the fixed die bottom plate.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, through the fixed die frame, the fixed die core, the L-shaped channel, the movable die frame, the movable die core, the cross-shaped pipe fitting, the first guide pipe and the second guide pipe, molten materials can be injected into the die cavity from multiple directions in the injection molding process, the situation that the materials in complex areas in the die cavity are rare is avoided, the influence of space factors is reduced, the uniformity of material distribution and the injection molding efficiency are improved, the situation that the formed product is partially too thin is effectively prevented, and the quality of the product is improved.

(2) According to the invention, cold water or hot water is injected into the fixed die frame and the movable die frame through the main pipe body, the auxiliary pipe body and the connecting pipe, so that the temperature around the die core is controlled, hot water is introduced during injection molding, the temperature of the die core is increased, partial materials are effectively prevented from being cured in advance, the fluidity of the materials is further promoted, the materials are distributed in the die cavity more uniformly, the quality of products is improved, cold water is introduced after injection molding, the solidification and molding of the materials are accelerated, the working efficiency is improved, the structure is stable, the installation is convenient, and a certain market prospect is provided.

(3) According to the invention, through the mutual matching among the backing plate, the limiting plate and the ejector rod, the molded product is ejected from the fixed die core after the film is opened, and the ejector rods are distributed in a lattice mode, so that in the process of ejecting the product, the force is applied to the product from a plurality of parts at the same time, the force application area is increased, the damage caused by the fact that uncooled parts of the product are pulled and damaged by the sticking parts of the inner wall of the die core due to local force is avoided, the product is protected, the film stripping efficiency is improved, and under the matching of the upright post and the spring, the ejector rods are convenient to move downwards and reset quickly, the subsequent operation is convenient, and the steps are more compact and coherent and stable.

The invention will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic diagram of an exploded construction of the present invention;

FIG. 3 is an exploded view of the stationary mold assembly of the present invention;

FIG. 4 is an exploded view of the movable module of the present invention;

FIG. 5 is a schematic overall cross-sectional view of the present invention;

fig. 6 is a schematic diagram of the structure of the movable mold insert and the fixed mold insert of the present invention.

Description of the drawings: 1. an injection mold mechanism; 2. a stationary mold assembly; 21. a fixed die bottom plate; 211. a preformed hole; 22. square iron; 23. a backing plate; 24. a limiting plate; 25. a column; 251. a spring; 26. a push rod; 27. setting a die frame; 271. a mounting hole; 28. positioning guide posts; 29. a fixed mould core; 291. an L-shaped channel; 292. a through hole; 3. a movable mold assembly; 31. a movable mold bottom plate; 311. a main flow passage; 32. a movable mould frame; 321. positioning the guide sleeve; 33. a movable mold core; 331. a cross-shaped pipe fitting; 332. a first guide tube; 333. a second guide tube; 4. a temperature control pipe fitting; 41. a main pipe body; 42. an auxiliary pipe body; 43. and (5) connecting pipes.

Detailed Description

In order that the invention may be more fully understood, a more particular description of the invention will be rendered by reference to the appended drawings, in which several embodiments of the invention are illustrated, but which may be embodied in different forms and are not limited to the embodiments described herein, which are, on the contrary, provided to provide a more thorough and complete disclosure of the invention.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly connected to one of ordinary skill in the art to which this invention belongs, and the knowledge of terms used in the description of this invention herein for the purpose of describing particular embodiments is not intended to limit the invention, and the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-6, an efficient and uniform injection mold is disclosed, which comprises an injection mold mechanism 1, the injection mold mechanism 1 comprises a fixed mold assembly 2 and a movable mold assembly 3, the fixed mold assembly 2 comprises a fixed mold bottom plate 21, two square irons 22 which are distributed in parallel are arranged on the fixed mold bottom plate 21, a fixed mold frame 27 is jointly arranged on the two square irons 22 through positioning pins, a fixed mold core 29 is embedded in a groove on the upper side of the fixed mold frame 27, the movable mold assembly 3 comprises a movable mold bottom plate 31 and a movable mold frame 32, a movable mold core 33 is embedded in a groove on the lower side of the movable mold frame 32, the movable mold core 33 and the fixed mold core 29 form a cavity, L-shaped channels 291 are respectively arranged around the fixed mold core 29, a cross pipe 331 is arranged in the middle of the movable mold core 33, a first guide pipe 332 is arranged below the cross pipe 331, four top joint positions of the cross pipe 331 are respectively provided with a second guide pipe 333, and the second guide pipe 333 and the corresponding L-shaped channels 291 are respectively provided with a movable mold frame 32, and the movable mold frame 32 is respectively provided with a temperature control cavity 4.

Through the structure, molten materials can be injected into the cavity from multiple directions in the injection molding process, so that the situation that the materials in complex areas in the cavity are rare is avoided, the uniformity of material distribution and the injection molding efficiency are improved, the situation that a formed product is partially too thin is effectively prevented, the quality of the product is improved, the temperature around a mold core is controlled, the flowability of the material is further promoted, the distribution is more uniform, the quality of the product is improved, the structure is stable, the installation is convenient, and the injection molding device has a certain market prospect;

specifically, after the movable mold and the fixed mold are closed, the injection nozzle of the injection molding machine guides the material into the main runner 311, then the material flows into the first guide tube 332 and the four second guide tubes 333 through the cross-shaped tube 331, then the material is guided out from the top and the periphery of the inner wall of the cavity, so that the material is rapidly distributed in the cavity, meanwhile, hot water with a proper temperature is guided into one main pipe 41 in each temperature-controlled tube 4, through the auxiliary pipe 42 and the connecting tube 43, and is guided out from the other main pipe 41, so as to provide a proper temperature for the mold core, after injection molding is finished, cold water is injected into the main pipe 41 of the temperature-controlled tube 4, so that the material is rapidly cooled and molded, then the movable mold assembly 3 moves upwards along the positioning guide posts 28 to open the mold, then the piston rod of the cylinder (existing equipment, not shown in the figure) pushes up the backing plate 23 from the position of the preformed hole 211, then the backing plate 23 moves upwards, the spring 251 compresses, the ejector rod 26 is inserted into the fixed mold core 29, and the product is ejected.

In the second embodiment, please refer to fig. 2 and 3 again, a backing plate 23 and a limiting plate 24 are provided between two square irons 22, the backing plate 23 is located at the upper side of a fixed die bottom plate 21, four vertex angle positions on the upper surface of the backing plate 23 are respectively provided with a vertical post 25, each vertical post 25 is respectively sleeved with a spring 251, the middle position of the upper surface of the backing plate 23 is provided with a plurality of ejector rods 26, the ejector rods 26 are arranged in a lattice manner, the ejector rods 26 and the vertical posts 25 respectively pass through round holes in the limiting plate 24, the lattice arrangement of the ejector rods 26 is adopted, so that in the demolding process, the stress of products is more uniform, the product damage is avoided, a plurality of through holes 292 are respectively formed in a fixed die core 29 and a fixed die frame 27, each through hole 292 respectively corresponds to the ejector rods 26 one by one, the four vertex angle positions on the upper side of the fixed die frame 27 respectively are respectively provided with a positioning guide post 28, a space is provided for the passing through the through holes 292, each temperature control pipe 4 respectively comprises a main pipe 41 and an auxiliary pipe 42, two auxiliary pipe bodies 42 are respectively arranged between the two pipe bodies 42 and the two auxiliary pipe bodies 43 and pass through round holes 43, each fixed die core body is respectively arranged at the position of the fixed die bottom plate 21 and the fixed die frame 27, and the preset die frame 211 is provided with a preset hole 32, and the temperature control hole is respectively arranged at the middle position of the hollow die core body is reserved at the position of the hollow die core body.

In the third embodiment, please refer to fig. 4 and 5, the four vertex angle positions of the movable mold frame 32 are respectively provided with a positioning guide sleeve 321, each positioning guide sleeve 321 is slidably connected with a corresponding positioning guide post 28, through the mutual cooperation between the positioning guide sleeve 321 and the positioning guide post 28, the movable mold frame 32 is stably moved up and down, the movable mold frame 32 is connected with the movable mold bottom plate 31 through a positioning pin, a main runner 311 is disposed in the middle position of the movable mold bottom plate 31, and the main runner 311 passes through a round hole in the middle position of the movable mold frame 32 to be connected with the upper end of a cross pipe 331 of the movable mold core 33.

While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the embodiments described above, but is intended to be within the scope of the invention, as long as such insubstantial modifications are made by the method concepts and technical solutions of the invention, or the concepts and technical solutions of the invention are applied directly to other occasions without any modifications.

Claims

1. The utility model provides a high-efficient even injection mold, includes injection mold mechanism (1), injection mold mechanism (1) includes cover half subassembly (2) and movable mould subassembly (3), its characterized in that, cover half subassembly (2) include cover half bottom plate (21), be provided with square iron (22) of two parallel distribution on cover half bottom plate (21), two install fixed die carrier (27) jointly through the locating pin on square iron (22), the recess of cover half frame (27) upside is embedded with cover half benevolence (29), movable mould subassembly (3) include movable mould bottom plate (31) and movable mould carrier (32), the recess of movable mould carrier (32) downside is embedded with movable mould benevolence (33), and movable mould benevolence (33) and cover half benevolence (29) constitute the die cavity, cover half benevolence (29) are provided with L shape passageway (291) all around respectively, the intermediate position of movable mould benevolence (33) is provided with cross pipe fitting (331), and cross pipe fitting (331) below are provided with first stand pipe (332), four positions of interface (333) correspond the top of second pipe (333) and are equipped with vertical pipe fitting (333), and temperature control pipe fittings (4) are arranged on the movable die frame (32) and the fixed die frame (27).

2. The efficient and uniform injection mold according to claim 1, wherein a base plate (23) and a limiting plate (24) are arranged between two square irons (22), the base plate (23) is located on the upper side of a fixed mold base plate (21), upright posts (25) are arranged at four vertex angle positions of the upper surface of the base plate (23), springs (251) are sleeved on each upright post (25), a plurality of ejector rods (26) are arranged at the middle position of the upper surface of the base plate (23), the ejector rods (26) are arranged in a lattice mode, and the ejector rods (26) and the upright posts (25) all penetrate through round holes in the limiting plate (24).

3. The efficient and uniform injection mold according to claim 1, wherein a plurality of through holes (292) are formed in the fixed mold core (29) and the fixed mold frame (27), each through hole (292) corresponds to the ejector rod (26) one by one, and positioning guide posts (28) are arranged at four vertex angle positions of the upper side of the fixed mold frame (27).

4. An efficient and uniform injection mold according to claim 1, characterized in that positioning guide sleeves (321) are arranged at four vertex angle positions of the movable mold frame (32), and each positioning guide sleeve (321) is slidably connected with a corresponding positioning guide post (28).

5. The efficient and uniform injection mold according to claim 4, wherein the movable mold frame (32) is connected with the movable mold bottom plate (31) through a positioning pin, a main runner (311) is arranged at the middle position of the movable mold bottom plate (31), and the main runner (311) passes through a round hole at the middle position of the movable mold frame (32) to be connected with the upper end of a cross-shaped pipe fitting (331) of the movable mold core (33).

6. An efficient and uniform injection mold according to claim 1, characterized in that each temperature control pipe fitting (4) comprises a main pipe body (41) and a sub pipe body (42), a connecting pipe (43) is arranged between the two sub pipe bodies (42), each main pipe body (41) is located in a mounting hole (271), and the mounting holes (271) are arranged on the side walls of the movable mold frame (32) and the fixed mold frame (27).

7. An efficient and uniform injection mold according to claim 2, characterized in that a preformed hole (211) is provided in the middle of the underside of the stationary mold base plate (21).