CN108407236B

CN108407236B - Injection molding mold

Info

Publication number: CN108407236B
Application number: CN201810206481.XA
Authority: CN
Inventors: 蔡李君
Original assignee: Shaoxing Shangyu Ya Star Plastic Cement Co ltd
Current assignee: Shaoxing Shangyu Yaxing Plastic Co.,Ltd.
Priority date: 2018-03-13
Filing date: 2018-03-13
Publication date: 2021-02-26
Anticipated expiration: 2038-03-13
Also published as: CN108407236A

Abstract

The invention provides an injection molding mold, which comprises: the male template is connected with the male template fixing plate; the female template is connected with the female template fixing plate, and the female template is contacted with the male template; the sprue bush is arranged in the male die fixing plate and extends into the male die plate; the locking assembly is arranged in the male template; the energy supply assembly accommodating groove is formed in the bottom plate; the damping component comprises a bottom plate supporting plate, a damping component supporting groove and a damping component fixing groove, wherein the supporting plate is fixedly connected with the bottom plate; energy supply subassembly, the one end of energy supply subassembly is fixed in energy supply subassembly holding tank, and the energy supply subassembly passes bottom plate, bottom plate support board, master model fixed plate and mother template. The invention designs an energy supply assembly, so that a mold cavity can be smoothly filled with molten plastic.

Description

Injection molding mold

Technical Field

The invention relates to the field of plastic injection molding, in particular to an injection molding mold.

Background

The plastic product industry is an important industry of national economy, and one of the most important molding methods of plastic products is injection molding. Today, with continuous maturation and development of injection molding technology, a traditional cold runner mold is far from meeting the requirements of high precision and high quality of modern products and the requirements of scale and automation of production. The hot runner mold is a mold which adopts a heating mode to ensure that the plastic melt in a runner is always kept in a molten state. Compared with the traditional mold, the forming method has the advantages of short forming period, strong technological adaptability, high automation degree, stable product quality, raw material saving and capability of reducing the cost of finished parts during mass forming. In addition, the sub-runner has good pressure transmission performance, thereby being beneficial to reducing the temperature and the injection pressure of the charging barrel of the injection machine and reducing the degradation of plastics and the generation of internal stress of a molded part. In advanced industrial countries, the use proportion of the hot runner mold is higher, and related production enterprises emerge. In general, the research and application history of the European and American hot runner technology is long, and the European and American hot runner technology has rich experience and advanced technical level. Hot runner technology levels in japan, singapore, korea, taiwan, hong kong, china are at the front in asia. The manufacturing level of the European and American mold is advanced, but the manufacturing cost is high, the transaction period is long, and compared with the hot runner mold produced in Asia, the Asian hot runner mold is more competitive.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Disclosure of Invention

The invention aims to provide an injection molding mould, so that the defects of the prior art are overcome.

In order to achieve the above object, the present invention provides an injection molding mold, which is characterized in that: the injection molding mold includes: the male template is connected with the male template fixing plate; the female template is connected with the female template fixing plate, and the female template is contacted with the male template; the sprue bush is arranged in the male die fixing plate and extends into the male die plate; the locking assembly is arranged in the male template; the energy supply assembly accommodating groove is formed in the bottom plate; the damping component comprises a bottom plate supporting plate, a damping component supporting groove and a damping component fixing groove, wherein the supporting plate is fixedly connected with the bottom plate; energy supply subassembly, the one end of energy supply subassembly is fixed in energy supply subassembly holding tank, and the energy supply subassembly passes bottom plate, bottom plate support board, master model fixed plate and mother template.

Preferably, in the above technical solution, a cavity for molding is formed between the female mold plate and the male mold plate; the outlet of the sprue bush is aligned with one side surface of one side of the cavity; the other end of the energizing assembly is provided with an enlarged member facing the outlet of the sprue bushing and aligned with the other side surface of the cavity side.

Preferably, among the above-mentioned technical scheme, still include energy supply subassembly stabilizing member in the energy supply subassembly holding tank, the one end of energy supply subassembly is set up in the bottom plate through energy supply subassembly stabilizing member.

Preferably, in the above technical solution, a damping device is disposed at a portion of the energy supply assembly passing through the female die fixing plate and the female die plate.

Preferably, in the above technical solution, the damping device includes: a damping device housing; an upper end cover; the damping plate is arranged on the inner side of the damping device outer cover and is in contact with the damping device outer cover; and the piston body is arranged on the inner side of the damping plate.

Preferably, in the above technical solution, the damping device includes: the isolation net is arranged inside the piston body; the pressurizing cavity is arranged in the piston body and is positioned on one side of the isolation net; and the piston body is sealed by the upper end cover and the lower end cover.

Preferably, in the above technical solution, the damping device includes: and the adjusting bolt penetrates through the lower end cover and can move in the lower end cover.

Preferably, among the above-mentioned technical scheme, be provided with the rubber pad in the damping subassembly holding tank.

Compared with the prior art, the invention has the following beneficial effects: the prior art molding dies rely solely on injection pressure to fill the mold cavity with molten plastic, but this filling is impractical for certain plastics that are inherently poor in flow and relatively viscous, and for which even if the injection pressure is elevated, the plastic does not fill the mold cavity smoothly. For this reason, some plastics with very good properties cannot be used effectively. And due to technical limitations, an unlimited increase of the injection pressure is not possible either. In order to solve the problem, the invention designs the energy supply assembly, the energy supply assembly corresponds to the inlet of the molten plastic into the mold cavity, and the energy supply assembly directly supplies energy to the molten plastic, so that the molten plastic can smoothly fill the mold cavity.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

FIG. 1 is a schematic structural view of an injection molding mold according to the present invention;

fig. 2 is a schematic view of the structure of a shock-absorbing device according to the present invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Fig. 1 is a schematic structural view of an injection molding die according to the present invention. As shown in the drawings, the injection molding die of the present invention includes: the male die plate 102 is connected with the male die fixing plate 101; a female mold plate 103, the female mold plate 103 being connected to the female mold fixing plate 104, and the female mold plate 103 and the male mold plate 102 being in contact with each other; the sprue bush 110 is arranged in the male die fixing plate 101, and extends into the male die plate 102; a locking assembly 112, the locking assembly 112 being disposed within the core plate 102; the bottom plate 107, the bottom plate 107 is provided with an energy supply assembly accommodating groove; the bottom plate supporting plate 106 is fixedly connected with the bottom plate 107, and a damping component accommodating groove 115 is formed in the bottom plate supporting plate 106; the energy supply assembly 109, one end of the energy supply assembly 109 is fixed in the energy supply assembly accommodating groove, and the energy supply assembly 109 passes through the bottom plate 107, the bottom plate supporting plate 106, the female die fixing plate 104 and the female die plate 103. As shown, the injection mold of the present invention further includes a plurality of cores 116, the cores 116 passing through the male mold fixing plate and the male mold plate. A support plate 105 disposed on the bottom plate support plate. And a top bar 108, wherein the top bar 108 is fixed on the supporting plate 105, passes through the female die fixing plate 104 and the female die 103 and is communicated with the injection molding cavity.

As shown in fig. 1, a cavity for molding is formed between the female mold plate and the male mold plate; the outlet of the sprue bush is aligned with one side surface of one side of the cavity; the other end of the energizing assembly 109 is provided with an enlarged part 111, the enlarged part 111 facing the outlet of the sprue bush, and the enlarged part 111 being aligned with the other side surface of the cavity side. The energy supply assembly 109 receiving slot further includes an energy supply assembly stabilizing member 114, and one end of the energy supply assembly 109 is disposed in the base plate via the energy supply assembly stabilizing member 114. Preferably, the energy supply assembly stabilizing member 114 may be a channel member made of plastic, and the energy supply assembly stabilizing member 114 can be tightly sleeved on the tail end of the energy supply assembly. A damping device 113 is provided at a portion of the power supply unit 109 passing through the cavity plate and the cavity plate. A rubber pad is arranged in the damping assembly accommodating groove. It is to be noted that the detailed structure of the shock absorbing device is not shown in detail in fig. 1 in order to make the drawings clearly apparent.

Fig. 2 is a schematic view of the structure of a shock-absorbing device according to the present invention. As shown in fig. 2, the damper device 113 includes: a damper housing 201; an upper end cap 203; a damper plate 205, the damper plate 205 being disposed inside the damper housing 201, and the damper plate 205 being in contact with the damper housing 201; piston body 206, piston body 206 are set up in the inboard of damper plate 205. The damper device 113 includes: an isolation net 207, wherein the isolation net 207 is arranged inside the piston body 206; a pressurizing cavity 208, wherein the pressurizing cavity 208 is arranged inside the piston body 206 and is positioned on one side of the isolation net 207; lower end cap 209, upper end cap 203 and lower end cap 209 seal piston body 206. The damper device 113 includes: the adjusting bolt 211, the adjusting bolt 211 passes through the lower end cover 209, and the adjusting bolt 211 can move in the lower end cover. As shown in fig. 2, the shock absorbing device further includes a motion rod 202, a piston valve 204, an upper stem 210, and a contact platform 212. When installed, the stem portion of the end of the energy supply assembly having the enlarged member is abutted against and secured to the upper post 210 portion. The lower support portion of the energy supply assembly is directly against the column damper housing 201 and is fixedly attached to the housing 201.

The working principle is as follows: the method of clamping the mold is a method known in the art. For the mold in the prior art, after the mold is closed, molten plastic is injected into the cavity of the mold through a gate, in order to enable the plastic to fill the mold smoothly, the temperature and injection pressure of the molten plastic need to be controlled, and if the temperature is too high, the plastic may be decomposed by heat and subjected to oxidation reaction, so that the product is discolored and the mechanical property is unqualified. If the injection pressure is too large, problems such as serious product flash, sample deformation and the like can be caused. In summary, these problems are actually resolved by insufficient mold-filling energy. The low temperature or insufficient pressure results in insufficient fluidity of the molten plastic during the mold filling process. Therefore, to solve this problem, the best method is to supply energy to the molten plastic. The invention provides energy through the energy supply component, and the provided energy can be mechanical energy, heat energy and other various forms of energy. The invention preferably uses heat energy for energy supply, in short, the energy supply component can be a heating device, the heat energy is amplified by the amplifying component and then is 'poured' into the molten plastic, the viscosity of the plastic is reduced after the plastic is heated, the mold filling capacity is improved, and due to the mode of secondary heating, the heating temperature of the plastic before mold filling is not required to be designed to be too high, so that the risk of plastic oxidation is reduced. If the energizing assembly is provided alone, the enlarged portion and the stem portion of the energizing assembly may be frequently struck during mold closing, which may result in early damage to the energizing assembly. In order to prevent damage, the invention adds a damping device. When the die is closed, any collision to the energy supply component due to the existence of the damping device can be absorbed by the damping device. Damage to the energy supply components is prevented.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims

1. An injection molding mold, characterized in that: the injection molding mold includes:

the male die plate is connected with the male die fixing plate;

the female die plate is connected with the female die fixing plate, and the female die plate and the male die plate are in contact with each other;

the sprue bush is arranged in the male die fixing plate and extends into the male die plate;

the locking assembly is arranged in the male template;

the energy supply assembly comprises a base plate, a plurality of energy supply assemblies and a plurality of connecting rods, wherein an energy supply assembly accommodating groove is formed in the base plate;

the bottom plate supporting plate is fixedly connected with the bottom plate, and a damping component accommodating groove is formed in the bottom plate supporting plate;

the energy supply assembly is fixed to the energy supply assembly accommodating groove at one end and penetrates through the bottom plate, the bottom plate supporting plate, the female die fixing plate and the female die plate, and a cavity for molding is formed between the female die plate and the male die plate;

the outlet of the sprue bush is aligned with one side surface of one side of the cavity;

the other end of the energy supply component is provided with an enlarged component, the enlarged component is just opposite to the outlet of the sprue bush, the enlarged component is aligned with the other side surface on one side of the cavity, the energy supply component accommodating groove further comprises an energy supply component stabilizing member, one end of the energy supply component is arranged in the bottom plate through the energy supply component stabilizing member, and a damping device is arranged at a part of the energy supply component, which penetrates through the female die fixing plate and the female die plate, and comprises:

a damping device housing;

an upper end cover;

a damper plate disposed inside the damper housing and contacting the damper housing;

a piston body disposed inside the damping plate, the damping device including:

the isolation net is arranged inside the piston body;

the pressurizing cavity is arranged inside the piston body and is positioned on one side of the isolating net;

the piston body is sealed with the lower end cover by the upper end cover, and the damping device comprises:

adjusting bolt, adjusting bolt runs through the lower extreme cover, and adjusting bolt can remove in the lower extreme cover, be provided with the rubber pad in the damping subassembly holding tank the entrance that the corresponding fused plastic of energy supply subassembly got into the die cavity, and the energy supply subassembly is direct supplies energy to the fused plastic for the die cavity can be full of smoothly to the fused plastic.