CN222372206U

CN222372206U - Injection mold for annular plastic parts

Info

Publication number: CN222372206U
Application number: CN202421268096.5U
Authority: CN
Inventors: 顾文彬
Original assignee: Kunshan Original Plastic Co ltd
Current assignee: Kunshan Original Plastic Co ltd
Priority date: 2024-06-05
Filing date: 2024-06-05
Publication date: 2025-01-21
Anticipated expiration: 2034-06-05

Abstract

The utility model discloses an injection mold for an annular plastic part, relates to the technical field of injection molds, solves the problem that the existing device is inconvenient to take out the finished product and the injection molding effect is poor, and adopts the following scheme: a fixing rod is fixedly installed on the top surface of the base, and the annular plastic part injection mold is provided with a lower mold A, a lower mold B and an electric telescopic rod. The hydraulic telescopic rod first drives the upper mold to rise upward, and then the electric telescopic rod drives the lower mold B to move downward, so that half of the annular plastic part leaks out, which not only prevents the finished product from being damaged, but also facilitates the taking out of the finished product. At the same time, through the provision of exhaust holes, diversion holes and injection holes, raw materials are injected through the injection molding port. The raw materials are first evenly divided into eight groups under the action of the diversion holes, and then injected into various positions of the mold cavity through the injection molding holes. The injection molding efficiency is high and the uniformity of the injection molding is also guaranteed. The exhaust holes can discharge the air in the injection molding cavity, so as to improve the injection molding effect.

Description

Injection mold for annular plastic parts

Technical Field

The utility model relates to the technical field of injection molds, in particular to an injection mold for a circular plastic part.

Background

The mould is used for producing various moulds and tools for injection moulding, blow moulding, extrusion, die casting or forging moulding, smelting, stamping and other methods to obtain required products, the mould is used for producing shaped articles, the tool is composed of various parts, and different moulds are composed of different parts, and the processing of the appearance of the articles is realized mainly through the change of the physical state of the shaped materials.

Through retrieving, in patent publication number CN 22049480U's application, a ring form plastic part injection mold is disclosed, including last mould, be provided with coupling mechanism between two ejector pins and the last mould respectively, coupling mechanism includes the connecting rod, first jack has been seted up on the top of lower mould, movable chamber has been seted up to the bottom of first jack inner wall, the inner wall sliding connection in movable chamber has the connecting plate, the intercommunicating pore has been seted up on the top of connecting plate, the second jack has been seted up to the bottom of movable chamber inner wall, the inner wall sliding connection in second jack has the roof, it is ejecting to the finished product after moulding plastics through the ejector pin, be convenient for take out the finished product after moulding plastics.

But because roof and ejector pin set up, when ejecting to annular plastic part, the ejector pin is inhomogeneous to the atress of finished product, and annular plastic part is broken by the top easily, and ejecting effect is poor, is difficult for taking out the annular finished product after moulding plastics, moulds plastics the annular chamber of moulding plastics simultaneously, because the space of ring is little, injects the raw materials through a hole of moulding plastics, and the inefficiency of moulding plastics is inhomogeneous, also leads to the effect of moulding plastics poor easily.

Therefore, we propose an injection mold for annular plastic parts.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides an injection mold for a circular plastic part, which solves the problems that the existing device is inconvenient to take out a finished product and has poor injection molding effect.

The injection mold for the annular plastic parts comprises a base, wherein four groups of hydraulic telescopic rods are fixedly arranged on the top surface of the base, and a top seat is fixedly arranged on the top end of each hydraulic telescopic rod;

The top surface of the base is fixedly provided with a fixing rod, the top end of the fixing rod is fixedly provided with a lower die A, the top surface of the lower die A is provided with a semi-annular lower die cavity A, the top surface of the base is fixedly provided with an electric telescopic rod with opposite positions, the top end of the electric telescopic rod is fixedly provided with a lower die B with specification matched with the right side of the lower die A, the top surface of the lower die B is provided with a lower die cavity B with specification matched with the lower die B, the bottom surface of the top seat is fixedly provided with an upper die with specification matched with the upper die, and the bottom surface of the upper die is provided with an upper die cavity with specification matched with the upper die;

The top surface of footstock is equipped with the mouth of moulding plastics, eight sets of position relative reposition of redundant personnel holes have been seted up to the bottom of moulding plastics the mouth, eight sets of position relative and with the orifice of moulding plastics that the reposition of redundant personnel hole is linked together have been seted up to the top surface of going up the die cavity, evenly distributed's exhaust hole has been seted up on the inner wall of lower die cavity A and lower die cavity B.

Preferably, the right side of the lower die A is provided with a sliding groove, and the left side of the lower die B is fixedly provided with a sliding block which is in sliding connection with the sliding groove, so that the sliding stability of the lower die B can be ensured.

Preferably, the fixed cover of position relatively is installed to the top surface of footstock, the top surface of fixed cover is equipped with evenly distributed's mediation mouth, the mediation mouth is linked together with the hole of moulding plastics, when the hole of moulding plastics takes place to block up like this, is convenient for dredge it.

Preferably, the top surfaces of the lower die A and the lower die B are provided with positioning holes, and the bottom surface of the upper die is fixedly provided with a positioning rod with a specification adapted, so that the die can be positioned, and the injection molding effect is improved.

Preferably, the top end of the outer wall of the electric telescopic rod is fixedly provided with two groups of support rods connected with the lower die B, so that the stability of the electric telescopic rod support can be improved.

Preferably, the lower mold a and the lower mold B are hollow, and are internally provided with a liquid cooler and liquid cooling water, so that the injection cooling efficiency can be improved.

1. This ring form plastic part injection mold, through bed die A, bed die B and electric telescopic handle's setting, after the cooling of moulding plastics is accomplished, the hydraulic telescopic handle drives the mould earlier and rises, then electric telescopic handle drives bed die B and moves down to spill the half of annular plastic part, both prevented that the finished product from receiving the damage, also be convenient for take out the finished product.

2. Simultaneously through the setting of exhaust hole, branch hole and hole of moulding plastics, pour into the raw materials through the mouth of moulding plastics, the raw materials evenly divide into eight groups under the effect of branch hole earlier, then pour into each position in mould chamber through the hole of moulding plastics simultaneously, and injection molding efficiency is high, also guarantees the homogeneity of moulding plastics, and the exhaust hole can be with the air discharge of moulding plastics intracavity to improve the effect of moulding plastics.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of a support bar according to the present utility model;

FIG. 3 is a schematic view of the structure of the lower mold of the present utility model;

FIG. 4 is a schematic view of the structure of the upper mold of the present utility model;

FIG. 5 is a schematic view of the structure of the injection molding port of the present utility model.

In the figure, 1, a base; 2, a hydraulic telescopic rod, 3, a top seat, 4, a fixed rod, 5, a lower die A, 6, an electric telescopic rod, 7, a lower die B, 8, a lower die A, 9, a lower die B, 10, a chute, 11, a sliding block, 12, an upper die, 13, an upper die cavity, 14, a supporting rod, 15, an injection hole, 16, an injection hole, 17, a diversion hole, 18, a fixed sleeve, 19, a dredging hole, 20, an exhaust hole, 21, a positioning hole, 22 and a positioning rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1:

As shown in fig. 1-5, a fixed rod 4 is fixedly arranged on the top surface of a base 1, a lower die A5 is fixedly arranged on the top end of the fixed rod 4, a semi-annular lower die cavity A8 is formed in the top surface of the lower die A5, an electric telescopic rod 6 with opposite positions is fixedly arranged on the top surface of the base 1, a lower die B7 with a specification matched with the lower die A5 and attached to the right side is fixedly arranged on the top end of the electric telescopic rod 6, a lower die cavity B9 with the specification matched with the lower die is formed in the top surface of the lower die B7, an upper die 12 with the specification matched with the upper die is fixedly arranged on the bottom surface of a top seat 3, an upper die cavity 13 with the specification matched with the upper die is formed in the bottom surface of the upper die 12, after injection molding and cooling are completed, the upper die 12 is driven to rise upwards by the hydraulic telescopic rod 2, and then the electric telescopic rod 6 drives the lower die B7 to move downwards, so that half of an annular plastic part is prevented from being damaged, and a finished product is taken out conveniently.

Example 2:

As shown in fig. 2-5, the top surface of the top seat 3 is provided with an injection molding opening 16, the bottom of the injection molding opening 16 is provided with eight groups of distribution holes 17 with opposite positions, the top surface of the upper mold cavity 13 is provided with eight groups of injection molding holes 15 with opposite positions and communicated with the distribution holes 17, the inner walls of the lower mold cavity A8 and the lower mold cavity B9 are provided with exhaust holes 20 which are uniformly distributed, raw materials are injected through the injection molding opening 16 by virtue of the arrangement of the exhaust holes 20, the distribution holes 17 and the injection molding holes 15, the raw materials are firstly uniformly divided into eight groups under the action of the distribution holes 17, and then are simultaneously injected into each position of the mold cavity through the injection molding holes 15, so that the injection molding efficiency is high, the injection molding uniformity is also ensured, and the exhaust holes 20 can exhaust air in the injection molding cavity, thereby improving the injection molding effect.

Example 3:

As shown in fig. 2-3, the top surface of the top seat 3 is provided with a fixed sleeve 18 with opposite positions, the top surface of the fixed sleeve 18 is provided with dredging openings 19 which are uniformly distributed, and the dredging openings 19 are communicated with the injection molding holes 15, so that when the injection molding holes 15 are blocked, the injection molding holes 15 are conveniently dredged.

When the device is required to work, raw materials are injected through the injection port 16, the raw materials are uniformly divided into eight groups under the action of the diversion holes 17, then are injected into all positions of a mold cavity through the injection holes 15, the injection efficiency is high, the injection uniformity is ensured, the air in the injection cavity can be discharged through the exhaust holes 20, the injection effect is improved, after the injection is completed and cooled, the upper mold 12 is driven to rise upwards by the hydraulic telescopic rod 2, the lower mold B7 is driven to move downwards by the electric telescopic rod 6, half of the annular plastic part is leaked, the finished product is prevented from being damaged, and the finished product is convenient to take out.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The injection mold for the annular plastic parts comprises a base (1), wherein four groups of hydraulic telescopic rods (2) are fixedly arranged on the top surface of the base (1), and a top seat (3) is fixedly arranged at the top end of each hydraulic telescopic rod (2);

The mold is characterized in that a fixing rod (4) is fixedly arranged on the top surface of the base (1), a lower mold A (5) is fixedly arranged on the top end of the fixing rod (4), a semi-annular lower mold cavity A (8) is formed in the top surface of the lower mold A (5), an electric telescopic rod (6) with opposite positions is fixedly arranged on the top surface of the base (1), a lower mold B (7) with a specification matched with the lower mold A (5) and attached to the right side is fixedly arranged on the top end of the electric telescopic rod (6), a lower mold cavity B (9) with the specification matched with the lower mold B (7) is formed in the top surface of the lower mold B, an upper mold (12) with the specification matched with the lower mold is fixedly arranged on the bottom surface of the top seat (3), and an upper mold cavity (13) with the specification matched with the upper mold is formed in the bottom surface of the upper mold (12);

The top surface of footstock (3) is equipped with injection molding mouth (16), eight sets of position relative reposition of redundant personnel holes (17) have been seted up to the bottom of injection molding mouth (16), eight sets of position relative and with reposition of redundant personnel hole (17) are linked together injection molding hole (15) have been seted up to the top surface of last die cavity (13), evenly distributed's exhaust hole (20) have been seted up on the inner wall of lower die cavity A (8) and lower die cavity B (9).

2. The injection mold for the annular plastic parts, as set forth in claim 1, characterized in that the right side of the lower mold A (5) is provided with a chute (10), and the left side of the lower mold B (7) is fixedly provided with a slider (11) in sliding connection with the chute (10).

3. The injection mold for the annular plastic parts, as set forth in claim 1, characterized in that the top surface of the top seat (3) is provided with a fixed sleeve (18) with opposite positions, the top surface of the fixed sleeve (18) is provided with dredging openings (19) which are uniformly distributed, and the dredging openings (19) are communicated with the injection molding holes (15).

4. The injection mold for annular plastic parts according to claim 1, wherein the top surfaces of the lower mold A (5) and the lower mold B (7) are provided with positioning holes (21), and the bottom surface of the upper mold (12) is fixedly provided with positioning rods (22) with specification matching.

5. The injection mold for annular plastic parts according to claim 1, wherein two groups of support rods (14) connected with the lower mold B (7) are fixedly arranged at the top end of the outer wall of the electric telescopic rod (6).

6. The injection mold for annular plastic parts according to claim 1, wherein the lower mold A (5) and the lower mold B (7) are hollow and internally provided with a liquid cooler and liquid cold water.