CN211763181U

CN211763181U - Double-runner injection mold

Info

Publication number: CN211763181U
Application number: CN202020203976.XU
Authority: CN
Inventors: 傅江崎
Original assignee: Xiamen Sendawei Technology Co ltd
Current assignee: Xiamen Sendawei Technology Co ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2020-10-27
Anticipated expiration: 2030-02-24

Abstract

The utility model discloses a double-flow-passage injection mould belongs to the mould field, double-flow-passage injection mould includes gating system and shaping part system, the gating system includes the runner template, branch nest of tubes and purt mouth, sprue and slope subchannel have been seted up in the runner template, the discharge end of purt mouth is linked together with the feed end of sprue, the feed end of two slope subchannels is linked together with the discharge end of sprue respectively, the discharge end of slope subchannel is linked together with the feed end of branch nest of tubes, the discharge end of branch nest of tubes is linked together with the feed end of shaping part system, set up the cold silo that is close to with the discharge end of slope subchannel mutually in the runner template. The utility model discloses a double-flow-passage injection mould makes double-flow-passage injection mould more steady smooth and easy in the pouring process, and prevents that plastics from getting into the die cavity because of the condensation solidification forms the cold burden and reducing the injection moulding efficiency of moulding the piece quality or stopping up the runner and reducing the piece of moulding.

Description

Double-runner injection mold

Technical Field

The utility model relates to the field of molds, especially, relate to a double flow channel injection mould.

Background

The die is various dies and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material.

In a pouring system of an existing injection mold, a horizontal runner is generally adopted to convey molten plastic so as to reduce the length of the runner, but the flow speed of the molten plastic in the horizontal runner is slow, the molten plastic is easy to stay in the runner to form cold materials, and the molding quality or molding efficiency of a plastic part is reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a double-runner injection mould is proposed, the gating system structure of runner template cooperation tributary nest of tubes group that has inclined runner and cold burden cave is adopted, makes double-runner injection mould more steady smooth and easy in the pouring process, and prevents that plastics from getting into the die cavity because of the condensation solidification and reducing the injection moulding efficiency that the piece quality was moulded or the sprue reduced to block up the runner and mould.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a double-runner injection mould, which comprises a pouring system and a molding part system, wherein the discharge end of the pouring system is communicated with the feed end of the molding part system, the pouring system comprises a runner template, at least two tributary nest of tubes and purt mouth, the purt mouth is fixed on a terminal surface of runner template, the tributary nest of tubes is fixed on another terminal surface of runner template, seted up sprue and two mutual symmetries and the slope subchannel that becomes the contained angle each other in the runner template, the discharge end of purt mouth is linked together with the feed end of sprue, the feed end of two slope subchannels is linked together with the discharge end of sprue respectively, the discharge end of slope subchannel is linked together with the feed end of tributary nest of tubes, the discharge end of tributary nest of tubes is linked together with the feed end of shaping part system, set up the cold material cave that is close to with the discharge end of slope subchannel is held in the runner template.

The utility model discloses preferred technical scheme lies in, is equipped with in the cold material cave to be used for the runner to congeal the material pole that draws of expecting the drawing of patterns.

The utility model discloses preferred technical scheme lies in, tributary nest of tubes is including tributary pipe fitting, supporting seat and sleeve group, and the tributary pipe fitting passes through supporting seat and runner template fixed connection, and the tributary pipe fitting passes through the sleeve group and realizes positioning assembly with shaping part system, and the discharge end of slope subchannel is linked together with the feed end of tributary pipe fitting, and the discharge end of tributary pipe fitting is linked together with shaping part system's feed end.

The utility model discloses preferred technical scheme lies in, has seted up branch runner and runner in the tributary pipe fitting, and the discharge end of slope subchannel is linked together with the feed end of branch runner, and the discharge end of branch runner is linked together with the feed end of runner, and the discharge end of runner is linked together with the feed end of shaping part system.

The utility model discloses preferred technical scheme lies in, and the average aperture of runner is less than the average aperture of tributary canal.

The utility model discloses preferred technical scheme lies in, and a runner includes direct current way and toper runner, and the direct current way is linked together with the runner through the toper runner, and the cross-section aperture of toper runner reduces gradually towards the direction of runner along the direct current way.

The utility model discloses preferred technical scheme lies in, the gating system still includes the location die holder, and the location die holder is fixed on shaping part system, and the runner template is fixed between location die holder and shaping part system.

The utility model discloses preferred technical scheme lies in, is fixed with the position circle on the location die holder, and the center of position circle and the center of purt mouth are located the same axis.

The utility model discloses preferred technical scheme lies in, is equipped with the pull ring portion that the user of being convenient for carried and draws on drawing the material pole.

The utility model has the advantages that:

the utility model provides a double-runner injection mould, after molten plastics entered into the runner template through the purt mouth, successively flowed through sprue and slope subchannel in proper order, realized injection moulding in rethread tributary nest of tubes entered into the shaping part system. Wherein, two slope subchannels adopt the distribution mode of symmetry, can guarantee that the plastics that two slope subchannels were flowed through can enter into its tributary nest of tubes that corresponds simultaneously, guarantee to mould a shaping quality more balanced unanimity, and two slope subchannels adopt the slope runner design of becoming the contained angle each other, can make plastics flow more smoothly, through setting up the cold burden cave, can store the cold burden head that produces because of twice interval of moulding plastics and the cold burden of the front of a knife or a sword that the fuse-element flows, in order to prevent that the fuse-element cold burden from getting into the die cavity and reducing the injection moulding efficiency that the piece quality was moulded or the sprue reduces to block up the piece. Through the process, the double-runner injection mold is more stable and smooth in the pouring process, and the plastic is prevented from entering a cavity to reduce the quality of the plastic part or blocking a sprue to reduce the injection molding efficiency of the plastic part due to the fact that the plastic is condensed and solidified to form cold materials.

Drawings

FIG. 1 is an assembly view of the overall structure of a dual-runner injection mold provided in an embodiment of the present invention;

FIG. 2 is a first perspective view of a gating system according to an embodiment of the present invention;

FIG. 3 is a perspective view of a gating system according to an embodiment of the present invention;

FIG. 4 is a structural rear view of a gating system provided in an embodiment of the present invention;

FIG. 5 is a cross-sectional view of the construction of the gating system of FIG. 4 taken along the line A-A;

FIG. 6 is an enlarged view of the runner system of section C of FIG. 5;

FIG. 7 is a cross-sectional view of the construction of the gating system of FIG. 4 taken along the line B-B;

fig. 8 is a schematic structural view of the runner template, the branch pipe group and the material pulling rod provided in the embodiment of the present invention matching with each other;

FIG. 9 is a cross-sectional view of the structure of FIG. 8 taken along the direction D-D;

fig. 10 is an enlarged view of a structure of a portion E in fig. 9.

In the figure:

1. a pouring system; 11. a flow channel template; 111. a main flow channel; 112. inclined runners; 113. a cold material hole; 12. a branch pipe group; 121. a tributary pipe; 110. branch flow channels; 101. a straight flow channel; 102. a tapered flow passage; 120. a gate; 122. a supporting seat; 123. a shaft sleeve set; 13. a squirt nozzle; 14. pulling a material rod; 141. a pull ring part; 15. positioning a die holder; 16. positioning rings; 2. a molded part system.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 10, the dual-runner injection mold provided in this embodiment includes a gating system 1 and a molding part system 2, a discharge end of the gating system 1 is communicated with a feed end of the molding part system 2, and an injection molding machine injects molten plastic into the molding part system 2 through the gating system 1 to implement injection molding. In order to make the double-runner injection mold more stable and smooth in the pouring process and prevent the plastic from entering a cavity to reduce the quality of a plastic part or block a pouring gate due to cold materials formed by condensation and solidification. Further, the gating system 1 includes a runner mold plate 11, at least two branch pipe sets 12 and a sprue 13, the sprue 13 is fixed on one end surface of the runner mold plate 11, the branch pipe sets 12 are fixed on the other end surface of the runner mold plate 11, a main runner 111 and two inclined branch runners 112 which are symmetrical to each other and form included angles are arranged in the runner mold plate 11, a discharge end of the sprue 13 is communicated with a feed end of the main runner 111, feed ends of the two inclined branch runners 112 are respectively communicated with a discharge end of the main runner 111, discharge ends of the inclined branch runners 112 are communicated with a feed end of the branch pipe sets 12, a discharge end of the branch pipe set 12 is communicated with a feed end of the molding part system 2, and a cold cavity 113 which is close to the discharge end of the inclined branch runners 112 is arranged on the runner mold plate 11. After entering the runner mold plate 11 through the squirt 13, the molten plastic flows through the main runner 111 and the inclined branch runner 112 in sequence, and then enters the molded part system 2 through the branch pipe group 12 to realize injection molding. Wherein, two slope subchannel 112 adopt the distribution mode of symmetry, can guarantee that the plastics that flow through two slope subchannels 112 can enter into its corresponding tributary nest of tubes 12 simultaneously, guarantee to mould a shaping quality more balanced unanimity, and two slope subchannels 112 adopt the slope runner design of mutual contained angle, can make plastics flow more smoothly, through setting up cold burden cave 113, can store because of twice moulding plastics the cold burden head that the interval produced and the cold burden of the front of a knife or a sword that the fuse-element flows that moulds plastics, in order to prevent that the cold burden of fuse-element from getting into the die cavity and reducing the injection moulding efficiency that moulds a quality or block up the runner and reduce the plastic part. Through the process, the double-runner injection mold is more stable and smooth in the pouring process, and the plastic is prevented from entering a cavity to reduce the quality of the plastic part or blocking a sprue to reduce the injection molding efficiency of the plastic part due to the fact that the plastic is condensed and solidified to form cold materials.

Preferably, the cold material cavity 113 is internally provided with a material pulling rod 14 for demoulding the flow channel solidified material. The user can conveniently demold and clean the cold materials in the cold material cavity 113 by pulling the material pulling rod 14.

Preferably, the branch pipe assembly 12 includes a branch pipe member 121, a support seat 122 and a sleeve group 123, the branch pipe member 121 is fixedly connected to the runner mold plate 11 through the support seat 122, the branch pipe member 121 is positioned and assembled with the molded part system 2 through the sleeve group 123, the discharge end of the inclined branch passage 112 is communicated with the feed end of the branch pipe member 121, and the discharge end of the branch pipe member 121 is communicated with the feed end of the molded part system 2. The supporting seat 122 is used for positioning and assembling the branch pipe fitting 121 on the runner mold plate 11 to play a role of supporting and fixing, the shaft sleeve group 123 is used for positioning and assembling the branch pipe fitting 121 and the forming part system 2, and the branch pipe fitting 121 is used for smoothly and reliably conveying the molten plastic from the inclined branch runner 112 to the forming part system 2.

Preferably, the branch pipe member 121 has a branch flow channel 110 and a gate 120 therein, the discharge end of the inclined branch flow channel 112 is communicated with the feed end of the branch flow channel 110, the discharge end of the branch flow channel 110 is communicated with the feed end of the gate 120, and the discharge end of the gate 120 is communicated with the feed end of the molded part system 2. The branch runners 110 are used for conveying molten plastic, and the gates 120 are used for allowing the molten plastic to be smoothly injected into the molded part system 2.

Preferably, the average pore size of the gate 120 is smaller than the average pore size of the runner 110. The aperture of the gate 120 is smaller so that the molten plastic is pressurized due to the abrupt change of the aperture of the runner to accelerate the flow rate, so that the molten plastic can be smoothly injected into the molded part system 2.

Preferably, the branched runner 110 includes a straight runner 101 and a tapered runner 102, the straight runner 101 communicates with the gate 120 through the tapered runner 102, and a cross-sectional aperture of the tapered runner 102 gradually decreases along the straight runner 101 toward the gate 120. The molten plastic sequentially flows through the straight flow passage 101 and the tapered flow passage 102 and then enters the gate 120, the straight flow passage 101 achieves transition connection of the section aperture through the tapered flow passage 102, the molten plastic is guaranteed to flow smoothly and stably, the gate 120 is prevented from being excessively pressed, and a transition buffering effect is achieved.

Preferably, the gating system 1 further includes a positioning die holder 15, the positioning die holder 15 is fixed on the molded part system 2, and the runner template 11 is fixed between the positioning die holder 15 and the molded part system 2. The positioning die holder 15 is used for supporting and protecting the runner template 11.

Preferably, a positioning ring 16 is fixed on the positioning die holder 15, and the center of the positioning ring 16 and the center of the squirt nozzle 13 are located on the same axis. Through setting up position circle 16 for the nozzle of injection molding machine is more accurate reliable with the purt mouth 13 location, guarantees the quality of moulding plastics.

Preferably, the pulling rod 14 is provided with a pulling ring portion 141 for facilitating the pulling by the user. The user can pull the pulling rod 14 conveniently through the pulling ring part 141.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. The utility model provides a double-runner injection mould, includes gating system (1) and shaping part system (2), the discharge end of gating system (1) with the feed end of shaping part system (2) is linked together its characterized in that:

the pouring system (1) comprises a runner template (11), at least two branch pipe groups (12) and a sprue bushing (13);

the sprue bushing (13) is fixed on one end face of the flow channel template (11), and the branch pipe group (12) is fixed on the other end face of the flow channel template (11);

a main runner (111) and two inclined sub-runners (112) which are symmetrical to each other and form an included angle are arranged in the runner template (11);

the discharge end of the sprue gate (13) is communicated with the feed end of the main flow channel (111), the feed ends of the two inclined sub-flow channels (112) are respectively communicated with the discharge end of the main flow channel (111), the discharge ends of the inclined sub-flow channels (112) are communicated with the feed end of the branch pipe group (12), and the discharge end of the branch pipe group (12) is communicated with the feed end of the molded part system (2);

and the runner template (11) is provided with a cold material hole (113) close to the discharge end of the inclined runner (112).

2. The dual-runner injection mold of claim 1, wherein:

and a material pulling rod (14) for demoulding of the runner condensed material is arranged in the cold material hole (113).

3. The dual-runner injection mold of claim 1, wherein:

the branch pipe group (12) comprises a branch pipe fitting (121), a support seat (122) and a shaft sleeve group (123);

the branch pipe fittings (121) are fixedly connected with the runner template (11) through the supporting seat (122), and the branch pipe fittings (121) are positioned and assembled with the molding part system (2) through a shaft sleeve group (123);

the discharge end of the inclined branch runner (112) is communicated with the feed end of the branch pipe fitting (121), and the discharge end of the branch pipe fitting (121) is communicated with the feed end of the molded part system (2).

4. The dual-runner injection mold of claim 3, wherein:

a branch flow channel (110) and a pouring gate (120) are formed in the branch pipe fitting (121);

the discharge end of the inclined runner (112) is communicated with the feed end of the branch runner (110), the discharge end of the branch runner (110) is communicated with the feed end of the sprue (120), and the discharge end of the sprue (120) is communicated with the feed end of the molded part system (2).

5. The dual-runner injection mold of claim 4, wherein:

the average pore diameter of the gate (120) is smaller than the average pore diameter of the branch flow passage (110).

6. The dual-runner injection mold of claim 4 or 5, wherein:

the branch flow channel (110) comprises a straight flow channel (101) and a conical flow channel (102);

the straight runner (101) is communicated with the sprue (120) through the conical runner (102);

the cross-sectional aperture of the tapered runner (102) gradually decreases along the straight runner (101) in the direction of the gate (120).

7. The dual-runner injection mold of claim 1, wherein:

the pouring system (1) further comprises a positioning die holder (15);

the positioning die holder (15) is fixed on the molded part system (2);

the runner template (11) is fixed between the positioning die holder (15) and the molded part system (2).

8. The dual-runner injection mold of claim 7, wherein:

a positioning ring (16) is fixed on the positioning die holder (15);

the center of the positioning ring (16) and the center of the squirt nozzle (13) are positioned on the same axis.

9. The dual-runner injection mold of claim 2, wherein:

the material pulling rod (14) is provided with a pulling ring part (141) which is convenient for a user to pull.