CN212446129U

CN212446129U - Runner structure of plastic mould

Info

Publication number: CN212446129U
Application number: CN202020955039.XU
Authority: CN
Inventors: 仇骏杰
Original assignee: Dongguan Jiehexin Mould Co ltd
Current assignee: Dongguan Jiehexin Mould Co ltd
Priority date: 2020-05-30
Filing date: 2020-05-30
Publication date: 2021-02-02
Anticipated expiration: 2030-05-30

Abstract

The utility model relates to the technical field of plastic molds, in particular to a flow channel structure of a plastic mold, which comprises an upper mold base, wherein a main flow channel and a first branch flow channel are arranged in the upper mold base, a conical cylinder positioned right above a feed inlet of the main flow channel is connected above the upper mold base, and a conical flow guide piece matched with the conical cylinder is arranged in the upper mold base; the tail end of the first diversion channel is provided with a threaded seat, a guide cylinder installation cavity is formed by outwards expanding the interior of the upper die base along the circumferential direction of the threaded seat, a guide cylinder matched with the threaded seat is arranged in the guide cylinder installation cavity, an upper die is connected below the upper die base, and a second diversion channel is arranged in the guide cylinder and the upper die; the lower die and the lower die holder are sequentially arranged below the upper die, a die cavity is arranged between the upper die and the lower die, and the second sub-runner is communicated with the die cavity. The utility model can make the flow distribution more uniform; through the cooperation of draft tube and screw seat, the preferred reduction user's work load when changing new mould has also promoted the quality of the module of producing simultaneously.

Description

Runner structure of plastic mould

Technical Field

The utility model relates to a plastic mould technical field, specifically speaking relates to a plastic mould's runner structure.

Background

In-process at the plastic product production of moulding plastics, in order to improve the efficiency that the product was moulded plastics, generally need use an injection molding machine to mould plastics to a plurality of products simultaneously, need shunt the injection molding material of injection molding machine output when using a plurality of moulds to mould plastics the product, traditional reposition of redundant personnel mode is on being total line shape connection sprue with a plurality of subchannels, when beginning to mould plastics like this and finishing moulding plastics, the terminal injection molding material flow and the pressure of sprue are can be less relatively, and then the homogeneity of reposition of redundant personnel has been influenced, finally influence the quality of injection molding product.

The patent document with publication number CN206393932U discloses a mold runner structure with main runner and sub-runners capable of uniformly distributing plastic materials, which comprises a main runner and a plurality of sub-runners, wherein the discharge end of the main runner is connected with a tapered cylinder with a thin upper end and a thick lower end, the lower end of the tapered cylinder is connected to an upper mold base through a flange, a plurality of sub-runners arranged radially are arranged in the upper mold base, the main runner is communicated with the sub-runners through the tapered cylinder, the upper mold base is also provided with a tapered flow guide piece, and the tapered flow guide piece is arranged right below the main runner; the lower end of the upper die holder is provided with a plurality of upper dies arranged along the circumferential direction of the upper die holder, the discharge ends of the sub-runners penetrate through the upper dies and are communicated with die cavities on the lower sides of the upper die holder, the lower side of the upper die holder is provided with a lower die holder, and the upper side of the lower die holder is provided with a plurality of lower dies arranged corresponding to the upper dies. Although the utility model provides the homogeneity of high injection molding material reposition of redundant personnel, can't adjust the size of shunting way according to specific production conditions to make the user need change the upper die base, go up mould and lower mould in order to adapt to different production conditions.

SUMMERY OF THE UTILITY MODEL

The unable defect that is applicable to different of preferred of runner structure to the ordinary plastic mould that exists among the prior art, the utility model provides a plastic mould's runner structure, its function that can realize reducing user work load when changing the mould.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

a runner structure of a plastic mold comprises an upper mold base which is integrally cylindrical, wherein a main runner and a plurality of first branch runners which are uniformly distributed along the circumferential direction of the main runner and are communicated with the main runner are arranged in the upper mold base; the tail end of the first branch flow passage is provided with a threaded seat which is perpendicular to the first branch flow passage, the inner part of the upper die base is expanded outwards along the circumferential direction of the threaded seat to form a guide cylinder installation cavity, a guide cylinder matched with the threaded seat is arranged in the guide cylinder installation cavity, an upper die is connected below the upper die base, and a second branch flow passage is arranged in the guide cylinder and the upper die; the lower die and the lower die holder are sequentially arranged below the upper die, a die cavity is arranged between the upper die and the lower die, and the second sub-runner is communicated with the die cavity.

Through the utility model discloses a setting of sprue, first subchannel and second subchannel reduces the impact of injection molding material to the upper die base for shunt more even. Through the cooperation of draft tube and screw seat, the preferred reduction user's work load when changing new mould has also promoted the quality of the module of producing simultaneously.

Preferably, the guide shell is wound with heating wires.

Through the utility model discloses a setting of heater strip can heat the injection molding material in the draft tube, has increased the mobility of the injection molding material in the second subchannel for the injection molding can be the preferred flow to the die cavity in.

Preferably, the lower end part of the conical cylinder is provided with a flange, the flange is connected with the upper die base through a bolt, and a sealing gasket is arranged between the flange and the upper die base.

Through the connection of the flange and the upper die base, the disassembly and the cleaning are convenient, and the influence on the subsequent shunting operation after the residual injection molding material in the first shunting channel is hardened is avoided; the arrangement of the sealing washer prevents the leakage of the injection molding material.

Preferably, the outer sides of the main runner and the upper die base are both covered with a layer of heat preservation and insulation ceramic.

Through the utility model discloses a thermal-insulated ceramic's of heat preservation setting can reduce the thermal loss of injection moulding material in the in-process sprue and the first runner of moulding plastics.

Preferably, the heat insulation plate is sleeved on the periphery of the heating wire on the guide cylinder installation cavity.

Through the utility model discloses a loss of energy when the injection molding material flows in the draft tube can be reduced in the setting of heated board.

Preferably, the upper die is connected with the upper die base through bolts, and the lower die is connected with the lower die base through bolts.

Through the utility model discloses a go up between the mould and the upper die base bolted connection and between lower mould and the die holder bolted connection, can make things convenient for people to go up mould and upper die base separation and separate lower mould and die holder.

Drawings

Fig. 1 is a schematic structural diagram of a runner structure of a plastic mold in embodiment 1.

Fig. 2 is a sectional view of a runner structure of the plastic mold of fig. 1.

Fig. 3 is an enlarged view of a portion a in fig. 2.

The names of the parts indicated by the numerical references in the drawings are as follows:

110. an upper die holder; 120. a tapered barrel; 121. a flange; 130. an upper die; 140. a lower die; 150. a lower die holder; 160. a sealing gasket; 210. a main flow channel; 220. a first shunt passage; 230. a conical flow guide member; 240. a second branch flow channel; 250. a mold cavity; 310. a threaded seat; 320. a guide shell installation cavity; 330. a draft tube; 340. heating wires; 350. provided is an insulation board.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention only and are not limiting.

Example 1

As shown in fig. 1-3, the present embodiment provides a flow channel structure of a plastic mold, which includes an upper mold base 110 that is integrally cylindrical, a main flow channel 210 and a plurality of first branch flow channels 220 that are uniformly distributed along a circumferential direction of the main flow channel 210 and are communicated with the main flow channel 210 are disposed in the upper mold base 110, a conical cylinder 120 that is located right above a feed port of the main flow channel 210 is connected above the upper mold base 110, a diameter of the conical cylinder 120 gradually increases from top to bottom, and a conical flow guide member 230 that is matched with the conical cylinder 120 is disposed in the upper mold base 110; the tail end of the first diversion channel 220 is provided with a threaded seat 310 which is perpendicular to the first diversion channel 220, the inner part of the upper die base 110 is expanded outwards along the circumferential direction of the threaded seat 310 to form a guide cylinder installation cavity 320, a guide cylinder 330 which is matched with the threaded seat 310 is arranged in the guide cylinder installation cavity 320, the upper die 130 is connected below the upper die base 110, and a second diversion channel 240 is arranged in the guide cylinder 330 and the upper die 130; the lower die 140 and the lower die holder 150 are sequentially arranged below the upper die 130, a die cavity 250 is arranged between the upper die 130 and the lower die 140, and the second shunt passage 240 is communicated with the die cavity 250.

Through the arrangement of the main runner 210, the first sub-runner 220 and the second sub-runner 240 in the embodiment, when injection molding is performed, the flow dividing process is not affected by the flow of the injection molding material in the main runner 210, and the flow dividing uniformity of the injection molding material is improved; through set up a toper section of thick bamboo 120 between sprue 210 and first minute runner 220, slow down the velocity of flow of injection molding material in a toper section of thick bamboo 120, reduce the influence of injection molding material velocity of flow to reposition of redundant personnel homogeneity, set up toper water conservancy diversion spare 230 in a toper section of thick bamboo 120 simultaneously, reduce the impact of injection molding material to upper die base 110 for shunt more even. When the production of the unused module is performed, a user can separate the upper die 130 from the upper die base 130 and the lower die 140 from the lower die base 150, then unscrew the guide cylinder 330 from the screw base 310, then replace the guide cylinder 330 with a different inner diameter, then replace the upper die 130 matched with the new guide cylinder 330 to adjust the inner diameter of the second branch runner 240, and finally install the lower die 140 matched with the upper die 130, so that the inner diameter of the second branch runner 240 can be better suitable for the injection molding of the new module, and the quality of the produced module is improved. In this embodiment, the guide cylinder 330 is matched with the threaded seat 310, so that a user does not need to replace the upper die base 110 when replacing a die, thereby preferably reducing the workload of the user when replacing a new die and improving the quality of a produced die.

In this embodiment, the guide shell 330 is wound with a heating wire 340.

Through the arrangement of the heating wires 340 in the embodiment, the injection molding material in the guide cylinder 330 can be heated, and the fluidity of the injection molding material in the second shunt passage 240 is increased, so that the injection molding part can better flow into the mold cavity 250.

In this embodiment, a flange 121 is disposed at a lower end of the tapered barrel 120, the flange 121 is bolted to the upper die base 110, and a sealing gasket 160 is disposed between the flange 121 and the upper die base 110.

The flange 121 in the embodiment is connected with the upper die holder 110, so that the disassembly and the cleaning are convenient, and the influence on the subsequent shunting operation after the residual injection molding material in the first shunting passage 220 is hardened is avoided; the provision of a sealing gasket 160 prevents leakage of the injection molding compound.

In this embodiment, the outer sides of the main channel 210 and the upper mold base 110 are covered with a layer of heat-insulating ceramic.

Through the arrangement of the heat preservation and insulation ceramic in the embodiment, the loss of injection molding heat in the main runner 210 and the first branch runner 220 in the injection molding process can be reduced.

In this embodiment, the insulation board 350 is sleeved on the periphery of the heating wire 340 on the guiding cylinder installation cavity 320.

Through the arrangement of the heat preservation plate 350 in the embodiment, the energy loss of the injection molding material in the flow guide cylinder 330 can be reduced.

In this embodiment, the upper mold 130 is bolted to the upper mold base 110, and the lower mold 140 is bolted to the lower mold base 150.

Through the bolt connection between the upper die 130 and the upper die base 110 and the bolt connection between the lower die 140 and the lower die base 150 in the embodiment, people can conveniently separate the upper die 130 from the upper die base 110 and separate the lower die 140 from the lower die base 150.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. The runner structure of plastic mould, its characterized in that: the device comprises an upper die base (110) which is cylindrical as a whole, wherein a main runner (210) and a plurality of first branch runners (220) which are uniformly distributed along the circumferential direction of the main runner (210) and communicated with the main runner (210) are arranged in the upper die base (110), a conical cylinder (120) which is positioned right above a feed inlet of the main runner (210) is connected above the upper die base (110), the diameter of the conical cylinder (120) is gradually increased from top to bottom, and a conical flow guide piece (230) which is matched with the conical cylinder (120) is arranged in the upper die base (110); the tail end of the first shunt passage (220) is provided with a threaded seat (310) which is perpendicular to the first shunt passage (220), the inner part of the upper die seat (110) is outwards expanded along the circumferential direction of the threaded seat (310) to form a guide cylinder installation cavity (320), a guide cylinder (330) which is matched with the threaded seat (310) is arranged in the guide cylinder installation cavity (320), an upper die (130) is connected below the upper die seat (110), and a second shunt passage (240) is arranged in the guide cylinder (330) and the upper die (130); a lower die (140) and a lower die seat (150) are sequentially arranged below the upper die (130), a die cavity (250) is arranged between the upper die (130) and the lower die (140), and the second sub-runner (240) is communicated with the die cavity (250).

2. The runner structure of a plastic mold according to claim 1, wherein: the guide shell (330) is wound with a heating wire (340).

3. The runner structure of a plastic mold according to claim 1, wherein: the lower end of the conical barrel (120) is provided with a flange (121), the flange (121) is connected with the upper die holder (110) through bolts, and a sealing gasket (160) is arranged between the flange (121) and the upper die holder (110).

4. The runner structure of a plastic mold according to claim 1, wherein: the outer sides of the main runner (210) and the upper die base (110) are covered with a layer of heat-insulating ceramic.

5. The runner structure of a plastic mold according to claim 2, wherein: the periphery of the heating wire (340) on the guide shell installation cavity (320) is sleeved with a heat insulation plate (350).

6. The runner structure of a plastic mold according to claim 1, wherein: the upper die (130) is connected with the upper die base (110) through bolts, and the lower die (140) is connected with the lower die base (150) through bolts.