CN212979093U - Injection mold with needleless stripping structure - Google Patents

Abstract

The utility model provides an injection mold with a needleless stripping structure, which comprises a panel, an upper template, a lower template and a bottom plate which are arranged in sequence, wherein the upper template is internally provided with an injection main runner, the bottom of the upper template is fixed with two convex modules, and one side of each of the two convex modules is provided with an inclined guide pillar; the top of the lower template is provided with two cavity cavities, an injection molding subchannel is connected between the two cavity cavities, two sides of the lower template are respectively provided with a translation chute, two opposite side walls in the translation chutes are respectively provided with a limiting groove, and a needle-free stripping assembly is arranged in the translation chute; the needle-free stripping assembly comprises a side module which is slidably connected in the translation sliding groove, an inclined guide hole is formed in the side module, a stripping water port groove is formed in one side of the side module, a stripping inclined plane is arranged on the bottom surface of the stripping water port groove, and the top end of the stripping inclined plane can be connected with the female die cavity. The utility model discloses the in-process of moulding plastics takes off the material mouth of a river inslot and can form and take off the material mouth of a river piece, takes off the ejecting action of material and accomplishes simultaneously at the die sinking in-process, takes off the material efficiently.

Description

Injection mold with needleless stripping structure

Technical Field

The utility model relates to an injection mold specifically discloses an injection mold with needleless takes off material structure.

Background

The injection mold is a tool for molding by utilizing an injection mold cavity, and has the characteristics of accurate product size and high production speed. Injecting the heated and melted plastic into an injection molding cavity at high pressure by an injection molding machine, and cooling and solidifying to obtain a molded plastic part.

In the prior art, an injection mold is mainly divided into an upper mold and a lower mold, a top plate and an ejector pin are usually arranged at the lower mold, the ejector pin is positioned at the bottom of a cavity of an injection mold cavity during mold closing, the mold is opened after injection molding and cooling molding, and then the ejector pin top plate is driven to ascend through power mechanisms such as a cylinder and the like to eject plastic products in the injection mold cavity.

SUMMERY OF THE UTILITY MODEL

Therefore, there is a need to provide an injection mold with a needle-free material-stripping structure, which can simultaneously complete the material-stripping and ejecting actions in the mold opening process, has high material-stripping efficiency, and does not require an additional power source.

In order to solve the prior art problem, the utility model discloses an injection mold with a needle-free stripping structure, which comprises a panel, an upper template, a lower template and a bottom plate which are arranged in sequence, wherein the upper template is internally provided with an injection main runner, the bottom of the upper template is fixed with two convex modules, one sides of the two convex modules respectively far away from the injection main runner are respectively provided with an inclined guide pillar, and the inclined guide pillars are fixed with the bottom of the upper template;

the top of the lower template is provided with two cavity cavities, an injection molding subchannel is connected between the two cavity cavities, two sides of the lower template are respectively provided with a translation chute, two opposite side walls in each translation chute are respectively provided with a limiting groove, and a needle-free stripping assembly is arranged in each translation chute;

the needle-free stripping assembly comprises a side mold block which is slidably connected in a translation sliding groove, an inclined guide hole is formed in the side mold block, an inclined guide pillar is slidably connected in the inclined guide hole, a stripping water notch is formed in one side, close to a female mold cavity, of the side mold block, a stripping inclined plane is arranged on the bottom surface of the stripping water notch, the top end of the stripping inclined plane can be connected with the female mold cavity, limiting blocks are fixed on two sides of the side mold block, and the limiting blocks are slidably connected in limiting grooves.

Furthermore, one side of the female die cavity, which is close to the stripping water opening groove, is connected with an anti-cracking water opening groove, and the anti-cracking water opening groove is positioned at the top of the lower template.

Furthermore, the limiting groove is a dovetail groove, and the limiting block is a dovetail slide block.

Furthermore, the bottom plate is in threaded connection with two locking screws, and the two locking screws are respectively positioned on one side of the two side mold blocks, which is far away from the injection molding sub-runner.

Furthermore, two T-shaped grooves are formed in the bottom plate, a locking nut is arranged in each T-shaped groove, and the locking screws penetrate through threads of the T-shaped grooves and are in threaded connection with the locking nuts.

The utility model has the advantages that: the utility model discloses an injection mold with needleless takes off material structure, be provided with special material mouth of a river groove structure of taking off, at the in-process of moulding plastics, take off the material mouth of a river inslot can form shape rather than the material mouth of a river spare that takes off that matches, during the die sinking, oblique guide pillar is through oblique guide hole drive side form piece translation, the shaping plastic part that injection moulding obtained is whole ejecting under the effect of taking off material inclined plane and taking off material mouth of a river spare, take off the ejecting action of material and accomplish simultaneously at the die sinking in-process, need not extra material time of taking off, it is efficient to take off the material, and take off the material and need not add extra power supply support function, overall structure is succinct when using.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic sectional view along a-a' in fig. 1 when the mold is closed.

Fig. 3 is a schematic view of the cross-sectional structure of the utility model along a-a' in fig. 1 when the mold is opened.

The reference signs are: the injection molding machine comprises a panel 10, an upper template 11, an injection molding main runner 12, a convex module 13, an inclined guide post 14, a bottom plate 20, a lower template 21, an injection molding sub-runner 22, a female die cavity 23, an anti-cracking water gap groove 231, a translation chute 24, a limiting groove 241, a needle-free stripping assembly 30, a side die block 31, an inclined guide hole 32, a stripping water gap groove 33, a stripping inclined plane 331, a limiting block 34, a locking screw 40, a T-shaped groove 41, a locking nut 42 and a molding plastic part 50.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1 to 3.

The embodiment of the utility model discloses an injection mold with needleless stripping structure, include panel 10, cope match-plate pattern 11, lower bolster 21 and bottom plate 20 that set gradually from top to bottom, be equipped with in the cope match-plate pattern 11 and mould plastics sprue 12, the bottom of cope match-plate pattern 11 is fixed with two convex mould pieces 13, two convex mould pieces 13 keep away from respectively moulding plastics sprue 12 one side all be equipped with an oblique guide pillar 14, oblique guide pillar 14 is fixed with the bottom of cope match-plate pattern 11, oblique guide pillar 14 keeps away from top to bottom that moulds plastics sprue 12 inclines, two oblique guide pillars 14 are the splayed and put;

the top of the lower template 21 is provided with two female mold cavities 23 which are respectively positioned under the two male mold blocks 13, when the mold is closed, the female mold cavities 23 and the male mold blocks 13 form an injection mold cavity, an injection molding sub-runner 22 which is positioned under the injection molding main runner 12 is connected between the two female mold cavities 23, when the mold is closed, the injection molding sub-runner 22 is communicated with the injection molding main runner 12, two sides of the lower template 21 are respectively provided with a translation chute 24, two opposite side walls in each translation chute 24 are respectively provided with a limiting groove 241, and a needle-free stripping assembly 30 is arranged in each translation chute 24;

the needle-free stripping assembly 30 comprises a side module 31 which is slidably connected in the translation chute 24, an inclined guide hole 32 is arranged in the side module 31, the inclined guide post 14 is slidably connected in the inclined guide hole 32 below the inclined guide post, the inclined guide holes 32 are parallel to the corresponding inclined guide columns 14, one side of the side module 31 close to the female die cavity 23 is provided with a stripping water port groove 33, the bottom surface of the stripping water port groove 33 is a stripping inclined plane 331, the stripping inclined plane 331 is back to the female die cavity 23, namely, the stripping inclined plane 331 inclines downwards away from the cavity 23, the top end of the stripping inclined plane 331 can be connected with the cavity 23, when the die is closed, the top end of the stripping inclined plane 331 is connected with the concave die cavity 23 adjacent to the stripping inclined plane, two sides of each side die block 31 are fixed with a limit block 34, each limit block 34 is respectively connected with each limit groove 241 in a sliding way, the horizontal height of the side module 31 can be effectively limited, and the side module 31 can be enabled to translate under the action of the inclined guide post 14 and the inclined guide hole 32.

When the die is closed and injection is carried out, as shown in fig. 2, the upper die plate 11 is tightly attached to the lower die plate 21, an injection die cavity is formed relative to the female die cavity 23 and the male die block 13, the stripping water port groove 33 is communicated with the female die cavity 23, and each flow channel of molten plastic enters the female die cavity 23 and the stripping water port groove 33; cooling to obtain a molded plastic part 50; when the mold is opened for stripping, as shown in fig. 3, the upper mold plate 11 is far away from the lower mold plate 21, the two inclined mold blocks are respectively deviated from the two inclined guide posts 14, namely the inclined mold blocks are far away from the cavity 23 to move, the stripping water gap part obtained in the stripping water gap 33 is far away from the bottom plate 20 to move under the guidance of the stripping inclined plane 331, so that the whole molding plastic part 50 is driven to be far away from the bottom plate 20 to move to realize stripping, no additional ejection operation is needed, the ejection efficiency is high, the ejection action is stable and reliable, the whole structure of the injection mold is simple, and no ejector pin structure is needed.

In this embodiment, two die cavities 23 are close to one side of two dehydration mouth of a river grooves 33 respectively and all are connected with crack control mouth of a river groove 231, two crack control mouth of a river grooves 231 all are located the top of lower bolster 21, during the compound die, adjacent dehydration mouth of a river groove 33 and die cavity 23 are connected to crack control mouth of a river groove 231, can effectively avoid the position of being connected between dehydration mouth of a river groove 33 and the die cavity 23 to be in the lateral wall of die cavity 23, even form defect structure also can form in crack control mouth of a river groove 231, can effectively improve the quality of the final product that obtains. Preferably, the crack-proof nozzle slot 231 is a channel slot structure which becomes shallow gradually close to the cavity 23, so that the product can be prevented from being damaged when the nozzle and the product are cut.

In this embodiment, the limiting groove 241 is a dovetail groove, and the limiting block 34 is a dovetail slider, that is, the limiting block 34 is a slider structure with a dovetail-shaped cross section, which can effectively improve the stability of the translational motion of the side module 31.

In this embodiment, the bottom plate 20 is threadedly connected with two locking screws 40, the two locking screws 40 are respectively located on one side of the two side modules 31 away from the injection runner 22, and the positions of the side modules 31 can be effectively limited by the locking screws 40, so that the side modules 31 are prevented from completely separating from the translation chutes 24, and the reliability of the overall structure can be ensured.

Based on the above embodiment, the bottom plate 20 is provided with two T-shaped grooves 41, each T-shaped groove 41 is internally provided with one locking nut 42, the two locking screws 40 respectively penetrate through the threads of the two T-shaped grooves 41 to be in threaded connection with the locking nuts 42, and the locking screws 40 can be loosened to adjust the position in a translational manner, so that the limit position of the side module 31 limited by the side module can be effectively adjusted.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (5)

1. An injection mold with a needleless stripping structure is characterized by comprising a panel (10), an upper mold plate (11), a lower mold plate (21) and a bottom plate (20) which are sequentially arranged, wherein an injection molding main runner (12) is arranged in the upper mold plate (11), two convex modules (13) are fixed at the bottom of the upper mold plate (11), an inclined guide pillar (14) is respectively arranged at one side of each of the two convex modules (13) far away from the injection molding main runner (12), and the inclined guide pillar (14) is fixed at the bottom of the upper mold plate (11);

the top of the lower template (21) is provided with two concave die cavities (23), an injection molding runner (22) is connected between the two concave die cavities (23), two sides of the lower template (21) are respectively provided with a translation chute (24), two opposite side walls in each translation chute (24) are respectively provided with a limiting groove (241), and a needle-free stripping assembly (30) is arranged in each translation chute (24);

the needle-free stripping assembly (30) comprises a side module (31) which is slidably connected into the translation chute (24), an inclined guide hole (32) is formed in the side module (31), an inclined guide post (14) is slidably connected into the inclined guide hole (32), a stripping water notch (33) is formed in one side, close to the concave die cavity (23), of the side module (31), the bottom surface of the stripping water notch (33) is a stripping inclined surface (331), the top end of the stripping inclined surface (331) can be connected with the concave die cavity (23), a limiting block (34) is fixed on each of two sides of the side module (31), and the limiting block (34) is slidably connected into the limiting groove (241).

2. The injection mold with the needleless stripping structure as claimed in claim 1, wherein an anti-cracking water port groove (231) is connected to one side, close to the stripping water port groove (33), of the female mold cavity (23), and the anti-cracking water port groove (231) is located at the top of the lower template (21).

3. The injection mold with the needle-free stripping structure as claimed in claim 1, wherein the limiting groove (241) is a dovetail groove, and the limiting block (34) is a dovetail slide block.

4. The injection mold with the needleless stripping structure as claimed in claim 1, wherein two locking screws (40) are threadedly connected to the bottom plate (20), and the two locking screws (40) are respectively located on one side of the two side modules (31) away from the injection runner (22).

5. The injection mold with the needleless stripping structure as claimed in claim 4, wherein the bottom plate (20) is provided with two T-shaped grooves (41), each T-shaped groove (41) is internally provided with a locking nut (42), and the locking screw (40) penetrates through the T-shaped groove (41) and is in threaded connection with the locking nut (42).

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