CN209955207U - A runner structure of a rubber injection molding machine - Google Patents

Abstract

The utility model discloses a flow channel structure of a rubber injection molding machine, which can form a plurality of products at one time, and has the characteristics of good molding effect, and the rubber material is not easy to overflow. and a lower flow channel plate, the upper surface of the upper flow channel plate is provided with a main flow channel, the main flow channel includes a plurality of branch ends, each branch end is provided with a first-level branch channel, and each first-level branch channel includes three upper pouring channels The upper surface of the lower runner plate is provided with auxiliary runners. The auxiliary runners include a plurality of secondary runners arranged in a rectangular array. Each secondary runner has an X-shaped structure. Each upper pouring hole is respectively communicated with the center of each secondary runner, four ends of each secondary runner are provided with lower pouring holes, and the utility model is suitable for the technical field of rubber forming molds.

Description

A runner structure of a rubber injection molding machine

technical field

The utility model belongs to the technical field of rubber forming moulds, in particular to a flow channel structure of a rubber injection moulding machine.

Background technique

Rubber parts are usually formed by the mold on the injection molding machine, but the runner structure of the existing mold is usually a single-layer runner plate, and the number of products that can be molded at a time is small. The flow channel structure on the flow channel plate is complex, and the length of a single flow channel is too long, which easily leads to uneven internal pressure of the rubber during the circulation process, and the final molding accuracy of each molding cavity is different, and the molding effect is poor.

Utility model content

The purpose of the present utility model is to provide a flow channel structure of a rubber injection molding machine, which can mold multiple products at one time, and has the characteristics of good molding effect and the rubber material is not easy to overflow.

The purpose of the present utility model is achieved as follows: a flow channel structure of a rubber injection molding machine includes an upper flow channel plate and a lower flow channel plate that are superimposed up and down, and is characterized in that: the upper surface of the upper flow channel plate is provided with a main flow The main channel includes a number of shunt ends, each of which is provided with a first-level shunt channel, each first-level shunt channel includes three upper pouring holes, and the upper surface of the lower runner plate is provided with auxiliary runners. The channel includes a number of secondary runners arranged in a rectangular array, each secondary runner has an X-shaped structure, and each upper pouring hole of each primary runner corresponds to the center of each secondary runner. , and the four ends of each secondary runner are provided with lower pouring holes.

By adopting the above technical solution, the upper pouring plate is also superimposed on the upper pouring plate, and the upper pouring plate has a gate which is connected with the center of the main flow channel. The upper gate on the secondary runner flows to the secondary runner, and finally flows from the lower gate on the secondary runner to the molding cavity. The primary and secondary runners are evenly distributed, and the runner structure is reasonable. It can form multiple products at one time, and the forming effect is good, and the double-layer runner structure of the upper runner plate and the lower runner plate can make the pressure more uniform when flowing, so as to prevent the rubber material from overflowing from the overlapping gap of the mold, and The molding accuracy of each product is easier to control.

The utility model is further configured as follows: the upper surface of the lower flow channel plate is further provided with a sealing convex ring arranged along the peripheral side of the secondary shunt channel, and the lower surface of the upper flow channel plate is further provided with a sealing convex ring adapted to the sealing convex ring A flexible graphite gasket is arranged in the sealing groove.

By adopting the above technical solution, the sealing convex ring and the lower flow channel plate are integrated into one structure, and the flexible graphite gasket can increase the interference sealing between the sealing convex ring and the sealing groove, and can effectively prevent the rubber material from flowing along the lower flow channel plate during the flow process. and overflow between the upper runner plate.

The utility model is further arranged as follows: a forming plate is also superimposed on the lower part of the lower runner plate, the forming plate is provided with a plurality of forming runners and a plurality of forming cavities with an inverted T-shaped structure, and the upper end of each forming runner is connected with the lower part. The pouring holes are communicated, and the two sides of the lower end of each molding runner are communicated with two molding cavities respectively.

By adopting the above technical solution, and through the design of the molding runner structure of the inverted T-shaped structure, each lower gate can simultaneously shape two products, and the molding efficiency is higher.

The utility model is further configured as follows: the number of the first-level runners is four, the number of the second-level runners is twelve, and the number of the forming runners is twelve.

By adopting the above technical solution, the number of molding cavities can be 24, that is, a pair of molds can simultaneously shape 24 products, the output is high, and the arrangement of the primary runner, the secondary runner and the molding runner The method makes the rubber material flow evenly and the molding effect of each product is good.

Description of drawings

Fig. 1 is the structural representation of the upper surface of the upper flow channel plate of the present utility model;

Fig. 2 is the structural representation of the upper surface of the lower flow channel plate of the present invention;

Fig. 3 is the structural representation of the lower surface of the upper flow channel plate of the present invention;

Fig. 4 is the sectional structure schematic diagram of the forming plate of the present utility model;

5 is a schematic structural diagram of the upper flow channel plate and the lower flow channel plate of the present utility model after being superimposed;

The reference signs in the figure are: 1, upper flow channel plate; 2, lower flow channel plate; 3, main flow channel; 4, first-level distribution channel; 5, upper pouring hole; 6, second-level distribution channel; 7, lower pouring hole; 8. Sealing convex ring; 9. Sealing groove; 10. Forming plate; 11. Forming runner; 12. Forming cavity.

Detailed ways

Below in conjunction with the accompanying drawings, the present utility model will be further described with specific embodiments, referring to Figures 1-5:

A runner structure of a rubber injection molding machine includes an upper runner plate 1 and a lower runner plate 2 that are superimposed up and down. A number of split ends, each split end is provided with a first-level split channel 4, each first-level split channel 4 includes three upper pouring holes 5, the upper surface of the lower channel plate 2 is provided with a secondary channel, the secondary channel Including a plurality of secondary runners 6 arranged in a rectangular array, each secondary runner 6 has an X-shaped structure, and each upper pouring hole 5 of each primary runner 4 corresponds to each secondary runner respectively. The center of 6 is connected, and the four ends of each secondary runner 6 are provided with lower pouring holes 7 .

By adopting the above technical solution, the upper runner plate 1 is also superimposed with an upper runner plate, and the upper runner plate has a gate connected to the center of the main channel 3, and the rubber material will flow along the main channel 3 to the primary runner 4 Then, from the upper pouring hole 5 on the primary runner 4 to the secondary runner 6, and finally from the lower pouring hole 7 on the secondary runner 6 to the molding cavity 12, the primary runner 4 and the second runner 6 flow to the molding cavity 12. The grading runners 6 are evenly distributed, and the runner structure is arranged reasonably, which can realize the molding of multiple products at one time, and the molding effect is good. The pressure is more uniform, preventing the rubber material from overflowing from the overlapping gap of the mold, and the molding accuracy of each product is easier to control.

The utility model is further configured as follows: the upper surface of the lower flow channel plate 2 is further provided with a sealing convex ring 8 arranged along the peripheral side of the secondary flow channel 6, and the lower surface of the upper flow channel plate 1 is also provided with a sealing convex ring 8. A matching sealing groove 9, and a flexible graphite gasket is arranged in the sealing groove 9.

By adopting the above technical solution, the sealing convex ring 8 and the lower flow channel plate 2 have an integrated structure, and the flexible graphite gasket can increase the interference sealing between the sealing convex ring 8 and the sealing groove 9, which can effectively prevent the rubber material from flowing during the flow process. Overflow along the lower runner plate 2 and the upper runner plate 1.

The utility model is further configured as follows: a forming plate 10 is also superimposed under the lower runner plate 2, and the forming plate 10 is provided with a plurality of forming runners 11 and a plurality of forming cavities 12 with an inverted T-shaped structure. The upper ends of the runners 11 are all communicated with the lower pouring holes 7 , and both sides of the lower end of each molding runner 11 are communicated with two molding cavities 12 respectively.

By adopting the above technical solution, through the structural design of the forming runner 11 of the inverted T-shaped structure, each lower runner 7 can form two products at the same time, and the forming efficiency is higher.

The utility model is further configured as follows: the number of the first-level runners 4 is four, the number of the second-level runners 6 is twelve, and the number of the forming runners 11 is twelve.

By adopting the above technical solution, the number of forming cavities 12 can be twenty-four, that is, one pair of molds can form twenty-four products at the same time, the output is high, and the primary runners 4, the secondary runners 6 and the forming runners The arrangement of 11 makes the rubber material flow evenly and the molding effect of each product is good.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention shall be covered by the present invention. within the scope of protection of the utility model.

Claims (4)

1. A runner structure of a rubber injection molding machine, comprising an upper runner plate (1) and a lower runner plate (2) which are overlapped up and down, characterized in that: go up and be equipped with sprue (3) on the upper surface of runner plate (1), sprue (3) include a plurality of reposition of redundant personnel ends, all be equipped with one-level runner (4) on every reposition of redundant personnel end, every one-level runner (4) all include three upper pouring hole (5), be equipped with vice runner on the upper surface of lower runner plate (2), vice runner includes a plurality of second grade runners (6) that are the rectangular array and arrange, every second grade runner (6) all are X type structure, it corresponds the center intercommunication with every second grade runner (6) respectively to water hole (5) on every of every one-level runner (4), all be equipped with down on four tip of every second grade runner (6) and water hole (7).

2. The runner structure of a rubber injection molding machine according to claim 1, characterized in that: the upper surface of the lower runner plate (2) is also provided with a sealing convex ring (8) arranged along the peripheral side of the secondary runner (6), the lower surface of the upper runner plate (1) is also provided with a sealing groove (9) matched with the sealing convex ring (8), and a flexible graphite gasket is arranged in the sealing groove (9).

3. The runner structure of a rubber injection molding machine according to claim 1, characterized in that: the lower portion of the lower runner plate (2) is further overlapped with a forming plate (10), a plurality of forming runners (11) and a plurality of forming cavities (12) of inverted T-shaped structures are arranged on the forming plate (10), the upper end of each forming runner (11) is communicated with a lower pouring hole (7), and two sides of the lower end of each forming runner (11) are communicated with the two forming cavities (12) respectively.

4. The runner structure of a rubber injection molding machine according to claim 3, characterized in that: the number of the first-stage branch runners (4) is four, the number of the second-stage branch runners (6) is twelve, and the number of the molding pouring gates (11) is twelve.

Images