CN220841264U - Runner system of injection mould - Google Patents

Abstract

The utility model relates to the technical field of injection molds, in particular to a runner system of an injection mold, which comprises an upper plate and a lower plate, wherein the upper plate is provided with a main injection hole, the upper surface of the lower plate is provided with a primary shunt groove, a plurality of secondary shunt grooves and a plurality of first injection holes, the main injection hole is communicated with the primary shunt groove, the primary shunt groove is communicated with the secondary shunt grooves through first runners, the secondary shunt grooves are communicated with the first injection holes through second runners, and the first runners and the second runners are grooves which are horizontally arranged and have open tops. The upper plate is provided with the hole of moulding plastics, and the upper surface of lower plate is provided with open one-level splitter box, second grade splitter box, first runner and second runner, and the upper plate lid closes with the lower plate top after, can form confined runner system, the sizing material of being convenient for moulds plastics. The utility model has reasonable design, is convenient for the mold opening processing of the runner system and the cleaning of the runner, and can realize the injection molding of the multi-cavity rubber material of one mold.

Description

Runner system of injection mould

Technical Field

The utility model relates to the technical field of injection molds, in particular to a runner system of an injection mold.

Background

At present, the main molding method of plastic workpieces is injection molding, namely, at a certain temperature, stirring completely molten plastic materials by a screw of an injection molding machine, injecting the molten plastic materials into a mold cavity of the mold by high pressure, and cooling and solidifying the molten plastic materials to obtain plastic part molded products.

The runner system is a channel through which plastic is injected into the mold cavity. In the injection molding production process, in order to improve the production efficiency of injection molding products, a plurality of mold cavities are often required to be arranged in one set of mold. Prior art CN101474853a discloses a runner plate for injection mold, the runner plate having two runner cavities, 1 runner inlet and 2 runner outlets, during injection molding, plastic enters the runner cavities through the runner inlets and then enters the mold cavity through the runner outlets. Although the structure can realize the injection molding of sizing materials, the structure still has a plurality of defects, 1, each mold cavity is only provided with one inlet, and for injection molding parts with complex structures, the filling of the mold cavities is not facilitated, and the scrapping of the injection molding parts is easy to cause; 2. the cleaning of sizing material in the runner cavity is very inconvenient, and the flow plate die sinking is also very difficult, has increased the production input of enterprise.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art, and provides a runner system of an injection mold, which is reasonable in design, convenient for grooving design of a runner, convenient for cleaning sizing materials in the runner and beneficial to injection filling of injection molding parts.

The technical scheme adopted for solving the technical problems is as follows: the runner system of the injection mold comprises an upper plate, a lower plate and a guide device used for moving the upper plate, wherein the upper plate is provided with a main injection hole, the upper surface of the lower plate is provided with a first-stage shunt groove, a plurality of second-stage shunt grooves and a plurality of first injection holes, each mold cavity of the injection mold is at least communicated with one first injection hole, the main injection holes are communicated with the first-stage shunt grooves, the first-stage shunt grooves are communicated with the second-stage shunt grooves through first runners, the second-stage shunt grooves are communicated with the first injection holes through second runners, and the first runners and the second runners are grooves which are horizontally arranged and are open at the top.

Further, the cross sections of the first flow channel and the second flow channel are semicircular.

Further, the injection molding device further comprises a third-stage flow dividing groove, wherein the second-stage flow dividing groove is communicated with the third-stage flow dividing groove through a third flow passage, and the second-stage flow dividing groove is communicated with the first injection molding hole through the second flow passage and the third flow passage.

Further, the guiding device comprises a guiding rod and a guiding hole, wherein the guiding rod is connected with the lower plate, and the guiding hole is positioned on the upper plate.

Further, the bottom surface of the upper plate and the upper surface of the lower plate are flat and smooth planes.

Further, the primary shunt groove is located in the middle of the lower plate, and the secondary shunt groove is located around the primary shunt groove.

Further, the upper plate is provided with a pressurizing device.

The beneficial effects of the utility model are as follows: the runner system of the injection mold comprises an upper plate, a lower plate and a guide device used for moving the upper plate, wherein the upper plate is provided with a main injection hole, the upper surface of the lower plate is provided with a first-stage shunt groove, a plurality of second-stage shunt grooves and a plurality of first injection holes, each mold cavity of the injection mold is at least communicated with one first injection hole, the main injection holes are communicated with the first-stage shunt grooves, the first-stage shunt grooves are communicated with the second-stage shunt grooves through first runners, the second-stage shunt grooves are communicated with the first injection holes through second runners, and the first runners and the second runners are grooves which are horizontally arranged and are open at the top. The upper plate is provided with the hole of moulding plastics, and the upper surface of lower plate is provided with open one-level splitter box, second grade splitter box, first runner and second runner, and the upper plate lid closes with the lower plate top after, can form confined runner system, the sizing material of being convenient for moulds plastics. The utility model has reasonable design, is convenient for the mold opening processing of the runner system and the cleaning of the runner, and can realize the injection molding of the multi-cavity rubber material of one mold.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a side view of the present utility model.

Fig. 3 is a top view of the lower plate of fig. 2.

Fig. 4 is a top view of another embodiment of the lower plate of the present utility model.

Reference numerals illustrate:

1-upper plate, 2-lower plate, 21-first-stage flow dividing groove, 22-second-stage flow dividing groove, 23-first injection hole, 24-third-stage flow dividing groove, 3-guiding device, 31-guiding rod, 32-guiding hole, 4-first flow passage, 5-second flow passage, 6-third flow passage and 7-pressurizing device.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and the specific embodiments, without limiting the scope of the utility model.

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 understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

As shown in fig. 1, 2,3 and 4, a runner system of an injection mold of this embodiment includes an upper plate 1, a lower plate 2 and a guiding device 3 for moving the upper plate, the upper plate 1 is provided with a main injection hole 11, the upper surface of the lower plate 2 is provided with a first level diversion trench 21, a plurality of second level diversion trenches 22 and a plurality of first injection holes 23, each cavity of the injection mold is at least communicated with one first injection hole 23, preferably, each cavity is correspondingly communicated with 2,3,4 first injection holes 23, the main injection hole 11 is communicated with the first level diversion trench 21, the first level diversion trench 21 is communicated with the second level diversion trench 22 through a first runner 4, the second level diversion trench 22 is communicated with the first injection holes 23 through a second runner 5, and the first runner 4 and the second runner 5 are horizontally arranged and open-topped grooves.

The working principle of the utility model is as follows: during injection molding, the upper plate 1 is covered above the lower plate 2 through the guide device 3, so that the main injection molding hole 11 is aligned with the primary diversion channel 21, the injection molding machine injects sizing material into the main injection molding hole 11, the sizing material flows into the secondary diversion channel 22 through the first runner 4 in the primary diversion channel 21, then flows into the first injection molding hole 23 at the tail end of the second runner through the second runner 5, and finally enters the mold cavity through the first injection molding hole 23. The runner is positioned on the surface of the lower plate 2 and is attached to the lower plate 2 through the upper plate 1, so that a channel which is convenient for sizing material to flow is formed, the runner mold opening processing is convenient, the processing cost of a runner system is reduced, and the runner is opened, so that sizing material in the runner is convenient to clean. The utility model is provided with a plurality of stages of splitter boxes, such as a first stage splitter box 21 and a second stage splitter box 22, so as to split the sizing material conveniently, thereby realizing filling of the sizing material in one mold and multiple cavities, such as injection molding of more mold cavities including one mold with four cavities, one mold with six cavities, one mold with eight cavities and the like.

The sections of the first flow channel 4 and the second flow channel 5 are semicircular, so that sizing materials can flow in the first flow channel 4 and the second flow channel 5 conveniently.

As shown in fig. 3, the rubber sizing device further comprises a three-stage diversion trench 24, the two-stage diversion trench 22 is communicated with the three-stage diversion trench 24 through a third runner 6, the two-stage diversion trench 22 is communicated with the first injection molding hole 23 through the second runner 5 and the third runner 6, the top of the third runner 6 is open, the section of the third runner is semicircular, and when more cavities exist in a mold, such as six cavities, eight cavities or more cavities, the multi-stage diversion trench is arranged to realize the diversion of rubber sizing material.

The guiding device 3 comprises a guiding rod 31 and a guiding hole 32, the guiding rod 31 is connected with the lower plate 2, the guiding hole 32 is positioned on the upper plate 1, the guiding device 3 plays a guiding role on the up-and-down movement of the upper plate 1 or the lower plate 2, the upper plate 1 is conveniently covered above the lower plate 2, and the main injection molding hole 11 is aligned with the primary diversion channel 21, so that the main injection molding hole 11, the primary diversion channel 21, the first flow channel 4, the second flow channel 5 and the first injection molding hole 23 enter a mold cavity.

The bottom surface of the upper plate 1 and the upper surface of the lower plate 2 are flat and smooth planes, and after the upper plate 1 is covered above the lower plate 2, the gap between the upper plate 1 and the lower plate 2 is reduced, and material leakage is avoided.

The primary diversion trench 21 is located in the middle of the lower plate 2, and the secondary diversion trench 22 is located around the primary diversion trench 21, so that the first diversion trench 21 can evenly divert sizing material into the secondary diversion trench 22 through the first flow channel 4.

The upper plate 1 is provided with a pressurizing device 7, the pressurizing device 7 can be a balancing weight, the pressure of the upper plate 1 to the lower plate 2 can be increased through the pressurizing device, the upper plate 1 and the lower plate 2 are tightly attached, and a large gap is prevented from being formed between the upper plate 1 and the lower plate 2.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (7)

1. A runner system for an injection mold, characterized by: including upper plate (1), hypoplastron (2) and be used for guiding device (3) that the upper plate removed, upper plate (1) is provided with main injection hole (11), hypoplastron (2) upper surface is provided with one-level splitter box (21), a plurality of second grade splitter box (22) and a plurality of first injection hole (23), every die cavity of injection mold at least with one first injection hole (23) intercommunication, main injection hole (11) with one-level splitter box (21) intercommunication, one-level splitter box (21) with second grade splitter box (22) are through first runner (4) intercommunication, second grade splitter box (22) with first injection hole (23) are through second runner (5) intercommunication, first runner (4) with second runner (5) are the level setting and the open recess in top.

2. The runner system of an injection mold of claim 1, wherein: the cross sections of the first flow channel (4) and the second flow channel (5) are semicircular.

3. The runner system of an injection mold of claim 1, wherein: the injection molding device further comprises a three-stage flow dividing groove (24), wherein the two-stage flow dividing groove (22) is communicated with the three-stage flow dividing groove (24) through a third flow passage (6), and the two-stage flow dividing groove (22) is communicated with the first injection molding hole (23) through the second flow passage (5) and the third flow passage (6).

4. The runner system of an injection mold of claim 1, wherein: the guide device (3) comprises a guide rod (31) and a guide hole (32), the guide rod (31) is connected with the lower plate (2), and the guide hole (32) is positioned on the upper plate (1).

5. The runner system of an injection mold of claim 1, wherein: the bottom surface of the upper plate (1) and the upper surface of the lower plate (2) are flat and smooth planes.

6. The runner system of an injection mold of claim 1, wherein: the primary flow dividing groove (21) is positioned in the middle of the lower plate (2), and the secondary flow dividing groove (22) is positioned around the primary flow dividing groove (21).

7. The runner system of an injection mold of claim 1, wherein: the upper plate (1) is provided with a pressurizing device (7).