CN218171270U - Cold runner needle valve type glue feeding structure of liquid silicone rubber mold - Google Patents

Abstract

The utility model discloses a liquid silicone rubber mold cold runner needle valve type glue feeding structure, including upper die base and lower die base, the fixed plate inside of upper die base is equipped with four piston mounting grooves, the top of four mounting grooves is all fixed and is equipped with piston sliding stop cover, the inside of four mounting grooves is all sliding connected with the piston, the inside of four pistons is all fixed and is equipped with sealed needle, the inside of upper die base has still seted up the flow distribution plate, the inside of upper die base is equipped with four glue feeding channels, the inside of four glue feeding channels is all fixed and is equipped with the cold nozzle sleeve, the inside of four cold nozzle sleeves is all fixed and is equipped with the cold nozzle core with sealed needle sliding fit, the bottom of four cold nozzle sleeves is all fixed and is equipped with the cold nozzle head, the utility model discloses a first inlet port and a second inlet port that set up can make the displacement volume of piston fixed each time, thereby make the glue feeding volume of each time fixed, can not influence the quality of product; water can be transported to cold mouth cover and cold mouth core in through the fortune water inlet opening that sets up to be convenient for cool off the sizing material of injection.

Description

Cold runner needle valve type glue feeding structure of liquid silicone rubber mold

Technical Field

The utility model belongs to the technical field of the mould, concretely relates to liquid silicone rubber mold cold runner needle valve formula advances glued structure.

Background

The liquid silica gel is also called liquid silica gel, is relative to solid high-temperature vulcanized silicone rubber, is liquid silica gel, has the characteristics of good fluidity, quick vulcanization, safety and environmental protection, and can completely meet the requirements of food grade. The liquid silica gel has excellent tear resistance, rebound resilience, yellowing resistance, heat stability, heat resistance, aging resistance and the like. The material is mainly used for infant articles, medical articles and electronic products, is widely used as electronic components in the electronic industry, and plays roles of dust prevention, moisture prevention, shock prevention and insulation protection on electronic components and assemblies;

the liquid silica gel is a two-component liquid material (A component and B component), is fully mixed according to the proportion of 1. Thus, before the liquid silicone rubber is injected into the cavity of the liquid silicone rubber mold by the molding machine, the liquid silicone rubber needs to be in a cooled state, if the liquid silicone rubber is too hot, the rubber starts to be vulcanized in the injection process or before the liquid silicone rubber is injected into the cavity of the mold, and the amount of the injected rubber cannot be controlled.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a liquid silicone rubber mold cold runner needle valve formula advances glued structure to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a liquid silicone rubber mold cold runner needle valve formula advances glued structure, includes upper die base and die holder, the inside of upper die base is equipped with four mounting grooves, four the top of mounting groove is all fixed and is equipped with piston sliding stop lid, four the equal sliding connection in inside of mounting groove has a piston, four the inside of piston is all fixed and is equipped with sealed needle, the flow distribution plate has still been seted up to the inside of upper die base, the inside of die holder is equipped with four and advances gluey passageway, four it all fixes and is equipped with the cold nozzle cover, four to advance gluey passageway the inside of all fixed be equipped with sealed needle sliding fit's cold nozzle core, four the bottom of cold nozzle cover is all fixed and is equipped with the cold nozzle head.

Preferably, four the top of sealed needle all slides and is equipped with sealed needle high temperature resistant rubber seal, four sealed needle high temperature resistant rubber seal's top all fixedly is equipped with sealed needle peripheral high temperature resistant rubber seal, four sealed needle high temperature resistant rubber seal is fixed the inside that sets up at the upper die base respectively.

Preferably, four the surface of piston all overlaps and is equipped with piston high temperature resistant rubber seal, four the bottom of piston sliding closure all inlays and is equipped with piston sliding closure high temperature resistant rubber seal.

Preferably, the bottom of each of the four cold nozzle sleeves is fixedly provided with a high-temperature resistant rubber sealing ring at the bottom of the cold nozzle sleeve, and the four cold nozzle sleeves are embedded with the cold nozzle cores and the cold nozzle sleeve waterproof high-temperature resistant rubber sealing rings.

Preferably, four the bottom of cold mouth core all fixed cold mouth core fortune water leak protection high temperature resistant rubber seal, four the top of cold mouth core all inlays and is equipped with cold mouth core top high temperature resistant rubber seal, four the top of cold mouth core all overlaps and is equipped with the peripheral high temperature resistant rubber seal of cold mouth core.

Preferably, the bottoms of the four cold nozzle heads are fixedly provided with heat insulation caps, and the top ends of the four cold nozzle heads are embedded with cold nozzle head high-temperature-resistant rubber sealing rings for preventing glue from entering and overflowing.

Preferably, two first air inlets and two second air inlets are formed in two sides of the upper die base, and the four first air inlets and the four second air inlets are respectively communicated with the interiors of the four mounting grooves.

Preferably, two water conveying and inlet holes corresponding to the cold nozzle sleeves are formed in two sides of the lower die base.

Compared with the prior art, the utility model provides a pair of liquid silica gel mould cold runner needle valve formula advances glued structure has following beneficial effect:

1. the displacement of the piston at each time can be fixed through the arranged first air inlet hole and the second air inlet hole, so that the glue feeding amount at each time is fixed, and the quality of a product cannot be influenced;

2. water can be transported to among cold mouth cover and the cold mouth core through the fortune water inlet opening that sets up to be convenient for cool off the sizing material of injection, prevent to begin to vulcanize at the injection process or before the injection enters into the mould cavity, improve processingquality.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

FIG. 2 is a partial overall structure diagram of the present invention;

fig. 3 is a schematic cross-sectional view of fig. 2 according to the present invention;

fig. 4 is a schematic view of the top view structure of the flow distribution plate of the present invention.

The labels in the figures are: 1. an upper die holder; 2. mounting grooves; 3. a piston; 301. the piston is a high-temperature resistant rubber sealing ring; 4. a piston stop sliding cover; 401. the piston stop sliding cover is a high-temperature resistant rubber sealing ring; 5. sealing the needle; 6. the sealing needle is a high-temperature resistant rubber sealing ring; 601. a high-temperature resistant rubber sealing ring is arranged at the periphery of the sealing needle; 7. a lower die holder; 701. a glue inlet channel; 8. a cold nozzle sleeve; 801. a high-temperature resistant rubber sealing ring is arranged at the bottom of the cold nozzle sleeve; 802. the cold nozzle core and the cold nozzle sleeve are waterproof and high-temperature resistant rubber sealing rings; 9. a cold tip core; 901. a cold nozzle core water-conveying leakage-proof high-temperature-resistant rubber sealing ring; 902. a high-temperature resistant rubber sealing ring is arranged at the top of the cold nozzle core; 903. a high-temperature resistant rubber sealing ring is arranged at the periphery of the cold nozzle core; 10. a cold tip; 1001. the cold nozzle head is a high-temperature resistant rubber sealing ring capable of preventing glue from overflowing during glue feeding; 11. a heat insulating cap; 12. a first air intake hole; 13. a second air intake hole; 14. a water conveying inlet hole; 15. a splitter plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1-4, the utility model provides a liquid silicone rubber mold cold runner needle valve type glue feeding structure, which comprises an upper mold base 1 and a lower mold base 7, four mounting grooves 2 are arranged inside the upper mold base 1, piston sliding stoppers 4 are fixedly arranged at the top ends of the four mounting grooves 2, pistons 3 are slidably connected inside the four mounting grooves 2, piston high temperature resistant rubber seal rings 301 are sleeved on the surfaces of the four pistons 3, high temperature resistant rubber seal rings 401 of the piston sliding stoppers are embedded at the bottoms of the four piston sliding stoppers 4, sealing needles 5 are fixedly arranged inside the four pistons 3, a splitter plate 15 is further arranged inside the upper mold base 1, four split glue feeding runners are arranged inside the splitter plate 15, holes corresponding to the four cold runners are formed at the ends of the four split glue feeding runners, the four split glue feeding runners are provided with holes communicated with the four cold runners, the four high temperature resistant rubber seal rings 6 are arranged at the tops of the four sealing needles 5 in a sliding manner, so as to improve the injection molding efficiency, the sealing needles 6 are provided with high temperature resistant rubber seal rings 6 at the tops thereof, four sealing needles 701 are provided with four cold core rubber seal rings, a cold plug sleeve insert sleeve 9 which are respectively arranged between the cold plug seat and the cold sleeve 5, a cold sleeve insert and a cold sleeve insert seal ring 701 which is arranged at the bottom of the cold sleeve, a cold sleeve 701 which is arranged at the cold sleeve, a cold sleeve 5 which is arranged at the cold sleeve, a cold sleeve 3 which is arranged at the bottom of the cold sleeve, a cold sleeve fixed at the cold sleeve 3, four cold mouth cores 9's bottom is all fixed and is equipped with cold mouth core fortune water leak protection high temperature resistant rubber seal 901, four cold mouth cores 9's top all inlays and is equipped with cold mouth core top high temperature resistant rubber seal 902, four cold mouth cores 9's top all overlaps and is equipped with cold mouth core peripheral high temperature resistant rubber seal 903, four cold mouth cover 8's bottom is all fixed and is equipped with cold mouth head 10, four cold mouth head 10's bottom is all fixed and is equipped with heat insulating cap 11, four cold mouth head 10's top all inlays and is equipped with cold mouth head and prevents into gluey excessive high temperature resistant rubber seal 1001, two first inlet ports 12 and two second inlet ports 13 have all been seted up to the both sides of upper die base 1, four first inlet ports 12 and four second inlet ports 13 communicate with each other with the inside of four mounting grooves 2 respectively, two fortune water inlet openings 14 corresponding with cold mouth cover 8 have all been seted up to the both sides of lower die base 7.

The working principle is as follows: when the device is used, firstly, when feeding, gas is injected into the mounting groove 2 through the second air inlet hole 13, the piston 3 is enabled to move upwards in the mounting groove 2, the sealing needle 5 is driven to slide in the cold nozzle core 9, the bottom end of the sealing needle 5 is enabled to be separated from the cold nozzle head 10, the rubber material is discharged through the cold nozzle head 10, when the gas supply to the second air inlet hole 13 is stopped, meanwhile, the gas is injected into the mounting groove 2 through the first air inlet hole 12, the piston 3 moves downwards, the sealing needle 5 is driven to move downwards, the bottom end of the sealing needle 5 is enabled to seal the cold nozzle head 10, the feeding is stopped, the rubber outlet quantity at each time is guaranteed to be fixed, cooling water is introduced into the cold nozzle sleeve 8 through the water conveying inlet hole 14 in the feeding process, the cooling water enters the space between the cold nozzle sleeve 8 and the cold nozzle core 9, the injected rubber material is cooled, the vulcanization is prevented from being started in the injection process or before the injection enters the mold cavity, and the processing quality is improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a liquid silicone rubber mold cold runner needle valve formula advances glued structure, includes upper die base (1) and die holder (7), its characterized in that, the inside of upper die base (1) is equipped with four mounting grooves (2), four the top of mounting groove (2) is all fixed and is equipped with piston sliding stop lid (4), four the equal sliding connection in inside of mounting groove (2) has piston (3), four the inside of piston (3) is all fixed and is equipped with sealed needle (5), flow distribution plate (15) have still been seted up to the inside of upper die base (1), the inside of die holder (7) is equipped with four and advances gluey passageway (701), four the inside of advancing gluey passageway (701) is all fixed and is equipped with cold nozzle cover (8), four the inside of cold nozzle cover (8) is all fixed be equipped with cold nozzle core (9) with sealed needle (5) sliding fit, four the bottom of cold nozzle cover (8) is all fixed and is equipped with cold nozzle head (10).

2. The cold runner needle valve type glue feeding structure of the liquid silicone mold according to claim 1, wherein: four the top of sealed needle (5) all slides and is equipped with sealed needle high temperature resistant rubber seal (6), four the top of sealed needle high temperature resistant rubber seal (6) is all fixed and is equipped with sealed needle peripheral high temperature resistant rubber seal (601), four sealed needle high temperature resistant rubber seal (6) are fixed the inside that sets up at upper die base (1) respectively.

3. The cold runner needle valve type glue feeding structure of the liquid silicone mold according to claim 1, wherein: four the surface of piston (3) all overlaps and is equipped with piston high temperature resistant rubber seal (301), four the bottom of piston sliding closure (4) all inlays and is equipped with piston sliding closure high temperature resistant rubber seal (401).

4. The needle valve type glue feeding structure of the liquid silicone rubber mold cold runner is characterized in that: four the bottom of cold mouth cover (8) is all fixed and is equipped with cold mouth cover bottom high temperature resistant rubber seal (801), four all inlay between cold mouth cover (8) and cold mouth core (9) and be equipped with cold mouth core and cold mouth cover waterproof high temperature resistant rubber seal (802).

5. The needle valve type glue feeding structure of the liquid silicone rubber mold cold runner is characterized in that: four the bottom of cold mouth core (9) is all fixed and is equipped with cold mouth core fortune water leak protection high temperature resistant rubber seal (901), four the top of cold mouth core (9) all inlays and is equipped with cold mouth core top high temperature resistant rubber seal (902), four the top of cold mouth core (9) all is equipped with cold mouth core peripheral high temperature resistant rubber seal (903) of overlapping.

6. The cold runner needle valve type glue feeding structure of the liquid silicone mold according to claim 1, wherein: the bottom of each of the four cold nozzle heads (10) is fixedly provided with a heat insulation cap (11), and the top end of each of the four cold nozzle heads (10) is embedded with a cold nozzle head high-temperature-resistant rubber sealing ring (1001) capable of preventing glue from entering and overflowing.

7. The cold runner needle valve type glue feeding structure of the liquid silicone mold according to claim 1, wherein: two first air inlets (12) and two second air inlets (13) are respectively formed in two sides of the upper die base (1), and the four first air inlets (12) and the four second air inlets (13) are respectively communicated with the interiors of the four mounting grooves (2).

8. The cold runner needle valve type glue feeding structure of the liquid silicone mold according to claim 1, wherein: two water-carrying and water-inlet holes (14) corresponding to the cold nozzle sleeve (8) are formed in the two sides of the lower die base (7).

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