Annular plastic part injection mold

Abstract

The utility model discloses an injection mold for a circular-ring-shaped plastic part, relates to the technical field of injection molds, solves the problems that an existing device is inconvenient to take out a finished product and poor in injection molding effect, and adopts the following scheme that a fixed rod is fixedly mounted on the top surface of a base. Through the arrangement of a lower mold A, a lower mold B and an electric telescopic rod, a hydraulic telescopic rod firstly drives an upper mold to ascend, and then the electric telescopic rod drives the lower mold B to move downwards, so that half of an annular plastic part is leaked out, a finished product is prevented from being damaged, and the finished product is conveniently taken out; raw materials are injected through the injection molding opening, the raw materials are uniformly divided into eight groups under the action of the flow dividing holes and then are injected into all positions of the mold cavity through the injection molding holes, the injection molding efficiency is high, the injection molding uniformity is also guaranteed, air in the injection molding cavity can be exhausted through the exhaust holes, and therefore the injection molding effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an annular plastic part injection mold. Background Art

[0002] Moulds are various molds and tools used in industrial production to obtain the required products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. Moulds are tools used to make molded objects. This tool is composed of various parts. Different moulds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material.

[0003] After searching, the application with patent announcement number CN22049480U discloses a circular plastic part injection mold, including an upper mold, two ejector rods respectively provided with connecting mechanisms between the upper mold, the connecting mechanism including a connecting rod, a first plug hole is opened at the top of the lower mold, a movable cavity is opened at the bottom end of the inner wall of the first plug hole, a connecting plate is slidably connected to the inner wall of the movable cavity, a connecting hole is opened at the top of the connecting plate, a second plug hole is opened at the bottom end of the inner wall of the movable cavity, and a ejector plate is slidably connected to the inner wall of the second plug hole, and the finished product after injection molding is ejected by the ejector rod, so that the finished product after injection molding is convenient to take out.

[0004] However, due to the setting of the ejector plate and the ejector rod, when the annular plastic part is ejected, the ejector rod exerts uneven force on the finished product, the annular plastic part is easily broken, the ejection effect is poor, and it is not easy to take out the annular finished product after injection molding. At the same time, when the annular injection cavity is injected, because the space of the annular ring is small, the raw material is injected through an injection hole, the injection efficiency is low, the injection molding is uneven, and it is also easy to cause poor injection molding effect.

[0005] Therefore, we propose a ring-shaped plastic part injection mold. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a circular ring-shaped plastic part injection mold, which solves the problems that the prior device is inconvenient to take out the finished product and has a poor injection molding effect.

[0007] To achieve the above purpose, the utility model is implemented by the following technical solutions: a circular ring-shaped plastic part injection mold, comprising a base, the top surface of the base is fixedly installed with four groups of hydraulic telescopic rods, and the top of the hydraulic telescopic rod is fixedly installed with a top seat;

[0008] A fixing rod is fixedly installed on the top surface of the base, a lower mold A is fixedly installed on the top of the fixing rod, a semi-circular lower mold cavity A is opened on the top surface of the lower mold A, an electric telescopic rod is fixedly installed on the top surface of the base, a lower mold B with matching specifications and fitting with the right side of the lower mold A is fixedly installed on the top of the electric telescopic rod, a lower mold cavity B with matching specifications is opened on the top surface of the lower mold B, an upper mold with matching specifications is fixedly installed on the bottom surface of the top seat, and an upper mold cavity with matching specifications is opened on the bottom surface of the upper mold;

[0009] The top surface of the top seat is equipped with an injection port, and the bottom of the injection port is provided with eight groups of relatively positioned diversion holes, the top surface of the upper mold cavity is provided with eight groups of relatively positioned injection holes connected with the diversion holes, and the inner walls of the lower mold cavity A and the lower mold cavity B are provided with evenly distributed exhaust holes.

[0010] Preferably, a slide groove is provided on the right side of the lower mold A, and a slider slidably connected to the slide groove is fixedly installed on the left side of the lower mold B, so that the sliding stability of the lower mold B can be ensured.

[0011] Preferably, a fixing sleeve is installed on the top surface of the top seat in a relatively opposite position, and the top surface of the fixing sleeve is equipped with evenly distributed dredging ports, and the dredging ports are connected to the injection holes, so that when the injection holes are blocked, they can be easily dredged.

[0012] Preferably, positioning holes are provided on the top surfaces of the lower mold A and the lower mold B, and positioning rods with matching specifications are fixedly installed on the bottom surface of the upper mold, so that the mold can be positioned to improve the injection molding effect.

[0013] Preferably, two groups of support rods connected to the lower mold B are fixedly installed on the top of the outer wall of the electric telescopic rod, which can improve the stability of the support of the electric telescopic rod.

[0014] Preferably, the lower mold A and the lower mold B are hollow inside and are equipped with a liquid cooler and liquid cooling water, which can improve the efficiency of injection molding cooling.

[0015] 1. This is a circular plastic injection mold. Through the setting of the lower mold A, the lower mold B and the electric telescopic rod, when the injection cooling is completed, the hydraulic telescopic rod first drives the upper mold to rise, and then the electric telescopic rod drives the lower mold B to move downward, so that half of the ring-shaped plastic part leaks out, which not only prevents the finished product from being damaged, but also facilitates the removal of the finished product.

[0016] 2. At the same time, by setting the exhaust hole, diversion hole and injection hole, the raw material is injected through the injection port. The raw material is first evenly divided into eight groups under the action of the diversion hole, and then injected into various positions of the mold cavity through the injection hole at the same time. The injection molding efficiency is high and the uniformity of injection molding is also guaranteed. The exhaust hole can discharge the air in the injection molding cavity, thereby improving the injection molding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the support rod of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the lower mold of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the upper mold of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the injection port of the utility model.

[0022] In the figure: 1. base; 2. hydraulic telescopic rod; 3. top seat; 4. fixing rod; 5. lower mold A; 6. electric telescopic rod; 7. lower mold B; 8. lower mold cavity A; 9. lower mold cavity B; 10. slide groove; 11. slider; 12. upper mold; 13. upper mold cavity; 14. support rod; 15. injection hole; 16. injection port; 17. diverter hole; 18. fixing sleeve; 19. dredging port; 20. exhaust hole; 21. positioning hole; 22. positioning rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] like Figure 1-5As shown: a fixing rod 4 is fixedly installed on the top surface of the base 1, a lower mold A5 is fixedly installed on the top of the fixing rod 4, a semi-annular lower mold cavity A8 is provided on the top surface of the lower mold A5, an electric telescopic rod 6 is fixedly installed on the top surface of the base 1, a lower mold B7 with matching specifications and fitting with the right side of the lower mold A5 is fixedly installed on the top of the electric telescopic rod 6, a lower mold cavity B9 with matching specifications is provided on the top surface of the lower mold B7, an upper mold 12 with matching specifications is fixedly installed on the bottom surface of the top seat 3, an upper mold cavity 13 with matching specifications is provided on the bottom surface of the upper mold 12, through the setting of the lower mold A5, the lower mold B7 and the electric telescopic rod 6, when the injection cooling is completed, the hydraulic telescopic rod 2 first drives the upper mold 12 to rise, and then the electric telescopic rod 6 drives the lower mold B7 to move downward, thereby leaking half of the annular plastic part, which not only prevents the finished product from being damaged, but also facilitates the removal of the finished product.

[0026] Embodiment 2:

[0027] like Figure 2-5 As shown: the top surface of the top seat 3 is equipped with an injection port 16, and eight groups of relatively positioned diverter holes 17 are opened at the bottom of the injection port 16. Eight groups of relatively positioned injection holes 15 connected with the diverter holes 17 are opened on the top surface of the upper mold cavity 13. Evenly distributed exhaust holes 20 are opened on the inner walls of the lower mold cavity A8 and the lower mold cavity B9. Through the arrangement of the exhaust holes 20, the diverter holes 17 and the injection holes 15, the raw materials are injected through the injection port 16. The raw materials are first evenly divided into eight groups under the action of the diverter holes 17, and then injected into various positions of the mold cavity through the injection holes 15 at the same time. The injection molding efficiency is high and the uniformity of the injection molding is also guaranteed. The exhaust holes 20 can discharge the air in the injection molding cavity, thereby improving the injection molding effect.

[0028] Embodiment 3:

[0029] like Figure 2-3 As shown: a fixing sleeve 18 is installed on the top surface of the top seat 3, and a uniformly distributed dredging opening 19 is installed on the top surface of the fixing sleeve 18. The dredging opening 19 is connected with the injection hole 15, so that when the injection hole 15 is blocked, it is convenient to dredge it.

[0030] The working principle and use process of the utility model are as follows: when the device is required to work, the raw material is first injected through the injection port 16, and the raw material is first evenly divided into eight groups under the action of the diverter hole 17, and then injected into various positions of the mold cavity through the injection hole 15 at the same time. The injection molding efficiency is high and the uniformity of the injection molding is also guaranteed. The exhaust hole 20 can exhaust the air in the injection molding cavity, thereby improving the injection molding effect. After the injection molding is completed and cooled, the hydraulic telescopic rod 2 first drives the upper mold 12 to rise, and then the electric telescopic rod 6 drives the lower mold B7 to move downward, thereby leaking half of the annular plastic part, which not only prevents the finished product from being damaged, but also facilitates the removal of the finished product.

[0031] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A circular ring-shaped plastic part injection mold, comprising a base (1), four groups of hydraulic telescopic rods (2) are fixedly mounted on the top surface of the base (1), and a top seat (3) is fixedly mounted on the top of the hydraulic telescopic rods (2); Features: A fixing rod (4) is fixedly mounted on the top surface of the base (1), a lower mold A (5) is fixedly mounted on the top of the fixing rod (4), a semi-circular lower mold cavity A (8) is provided on the top surface of the lower mold A (5), an electric telescopic rod (6) is fixedly mounted on the top surface of the base (1) and a lower mold B (7) having a matching specification and fitting with the right side of the lower mold A (5) is fixedly mounted on the top of the electric telescopic rod (6), a lower mold B (7) having a matching specification and fitting with the right side of the lower mold A (5) is provided on the top surface of the lower mold B (7), an upper mold (12) having a matching specification is fixedly mounted on the bottom surface of the top seat (3), and an upper mold cavity (13) having a matching specification is provided on the bottom surface of the upper mold (12); The top surface of the top seat (3) is equipped with an injection port (16), and the bottom of the injection port (16) is provided with eight groups of relatively positioned diversion holes (17). The top surface of the upper mold cavity (13) is provided with eight groups of relatively positioned injection holes (15) that are connected to the diversion holes (17). The inner walls of the lower mold cavity A (8) and the lower mold cavity B (9) are provided with uniformly distributed exhaust holes (20).

2. The annular plastic part injection mold according to claim 1, characterized in that: A slide groove (10) is provided on the right side of the lower mold A (5), and a sliding block (11) slidably connected to the slide groove (10) is fixedly installed on the left side of the lower mold B (7).

3. The annular plastic part injection mold according to claim 1, characterized in that: The top surface of the top seat (3) is provided with a fixing sleeve (18) in a relative position, and the top surface of the fixing sleeve (18) is provided with evenly distributed dredging openings (19), and the dredging openings (19) are connected to the injection hole (15).

4. The annular plastic part injection mold according to claim 1, characterized in that: 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 mounted with a positioning rod (22) of matching specifications.

5. The annular plastic part injection mold according to claim 1, characterized in that: Two groups of support rods (14) connected to the lower mold B (7) are fixedly mounted on the top end of the outer wall of the electric telescopic rod (6).

6. The annular plastic part injection mold according to claim 1, characterized in that: The lower mold A (5) and the lower mold B (7) are hollow inside and are equipped with a liquid cooler and liquid cooling water.

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