Quick-cooling injection mold hot runner

Abstract

The utility model discloses a quick-cooling injection mold hot runner which comprises a base and further comprises a plurality of supporting plates arranged on the base, a lower mold is arranged on the supporting plates jointly, a plurality of grooves are formed in the lower mold, a plurality of grooves are formed in an inner mold, a demolding assembly is arranged in the grooves jointly, and the demolding assembly is arranged on the base. An upper mold is arranged on the demolding assembly, a socket port is formed in the upper mold, a cooling part is arranged in the upper mold, a top plate is arranged on the upper mold, and an injection molding part is arranged on the top plate; the injection mold hot runner capable of being rapidly cooled has the advantage of balancing heat balance of the runner plate, cooling liquid can rapidly flow through the cooling device and the water pipe, cooling efficiency is improved, liquid in the runner plate is kept flowing, liquid supercooling blockage is reduced, meanwhile, contact with a ceiling can be reduced through the heat insulation cushion block, and the service life of the injection mold hot runner is prolonged. Therefore, the contact surface is reduced, the heat loss is reduced, and the heat balance of the runner plate is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold hot runner technical field, concretely relates to a kind of injection mold hot runner of rapid cooling. BACKGROUND

[0002] The rapid cooling injection mold hot runner technology is a kind of technology for improving the cooling efficiency of injection mold and shortening production cycle.In the injection molding process, the temperature control of mold directly affects the quality of molded product, production efficiency and energy consumption. As one of the key parts in mold design, the runner plate system usually involves the temperature control system of runner plate, which makes the heat conduction of mold more uniform during injection molding process through rapid cooling of runner plate, thereby improving production efficiency.

[0003] The existing injection mold hot runner, the temperature of runner plate is not uniform, which leads to inconsistent flowability of plastic in the runner, thereby producing molding defects and bubbles. Meanwhile, the thermal equilibrium of runner plate is poor, which leads to overheating or overcooling in some areas, causing the blockage of injection nozzle head. Therefore, there is an urgent need for a kind of injection mold hot runner of rapid cooling to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model relates to a kind of injection mold hot runner of rapid cooling and process, to solve the above deficiencies in prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a kind of injection mold hot runner of rapid cooling, comprising base, further comprising: a plurality of support plates are arranged on the base, a plurality of support plates are commonly provided with lower mold, a plurality of recesses are formed in the inner mold, a plurality of recesses are commonly provided with demolding assembly, the upper mold is arranged on the demolding assembly, the socket port is arranged on the upper mold, the cooling component is arranged in the upper mold, the upper mold is provided with the ceiling, and the injection part is arranged on the ceiling.

[0006] Preferably, the demolding assembly includes electric push rods arranged in the recesses respectively, a plurality of push rod columns are arranged on the upper mold, and a plurality of electric push rods are respectively engaged with corresponding push rod columns, a plurality of limit blocks are arranged on the lower mold and the upper mold, and corresponding two limit blocks are commonly provided with a limit plate slide, and a cavity slider is arranged on the lower mold.

[0007] Preferably, the cooling component includes an inner mold sleeve arranged on the ceiling, a plurality of cooling devices are arranged on the inner mold sleeve, two water pipes are respectively arranged on a plurality of cooling devices, a plurality of cooling pipes are fixedly communicated with the upper mold, and the other end of a plurality of water pipes is fixedly communicated with corresponding cooling pipes.

[0008] Preferably, the injection molding part includes a circular groove provided on the top plate, a positioning ring provided on the circular groove, a flow distribution assembly provided on the top plate, a limiting block provided on the top plate, a plurality of fixing bolts provided on the top plate, a bolt pad provided on each of the fixing bolts, and a plurality of positioning pins and a center positioning pin provided on the top plate.

[0009] Preferably, the flow distribution assembly includes a flow channel plate provided on the top plate, a main nozzle provided on the flow channel plate and engaged with the circular groove, a plurality of air joints provided on one side of the flow channel plate, a hot nozzle body provided at the bottom of the flow channel plate, a cooling water jacket provided at the bottom of the hot nozzle body, a plurality of heat insulation pad blocks provided at the top of the flow channel plate, and an air cylinder provided on each of the heat insulation pad blocks.

[0010] Preferably, a guide sleeve is sleeved on the valve needle and engaged with the heat insulation pad block, and a plurality of small holes are formed in the heat insulation pad block.

[0011] Preferably, a heater is arranged in the hot nozzle body, a nozzle head is arranged at the bottom of the hot nozzle body, a cooling water jacket is arranged at the bottom of the nozzle head, a heat insulation cap is arranged on the nozzle head and located between the cooling water jacket and the nozzle head, and a cavity groove is arranged on both sides of the nozzle head.

[0012] Preferably, the limiting block is fixedly connected with the flow channel plate, a rubber pad is arranged at the bottom of the base, a frosted pattern is arranged on the rubber pad, and a water channel is formed in the cooling water jacket.

[0013] In the above technical solution, the utility model has the following beneficial effects:

[0014] 1. The injection mold hot runner with rapid cooling has the advantage of balancing the heat balance of the flow channel plate. The cooling device and the water pipe are arranged to make the cooling liquid flow rapidly, improve the cooling efficiency, maintain the liquid flow in the flow channel plate, reduce the liquid supercooling blockage, and reduce the contact with the top plate through the arrangement of the heat insulation pad block, thereby reducing the contact surface, reducing the heat loss, and improving the heat balance of the flow channel plate.

[0015] 2. The injection mold hot runner with rapid cooling has the advantage of reducing the generation of air bubbles. The air cylinder is arranged to make the air in the flow channel plate flow out rapidly, reduce the defects of injection molding, and make the gas flow out of the air holes of the heat insulation pad block during the up and down movement of the valve needle through the arrangement of the air joint and the air cylinder. Thus, the air bubbles in the hot liquid of the flow channel plate can be quickly removed, and the gas in the thermoplastic is made to approach the air joint through cold and hot alternation, thereby improving the temperature of the device.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to be restrictive of the disclosure.

[0017] This document provides an overview of various implementations or examples of the technology described in this disclosure and is not intended to be an exhaustive disclosure of all aspects of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0019] Figure 1 The overall structure schematic diagram provided by the present application embodiment is shown in the figure.

[0020] Figure 2 The overall structure schematic diagram provided by the present application embodiment is shown in the figure. Figure 1 The internal structure schematic diagram of the injection mold is shown in the figure.

[0021] Figure 3 The internal structure schematic diagram of the injection mold is shown in the figure. Figure 2 The schematic diagram of the injection part structure is shown in the figure.

[0022] Figure 4 The schematic diagram of the shunt assembly structure is shown in the figure. Figure 3 The schematic diagram of the shunt assembly structure is shown in the figure.

[0023] Figure 5 The structure schematic diagram of the runner plate provided by the present application embodiment is shown in the figure.

[0024] Figure 6 The structure schematic diagram of the runner plate provided by the present application embodiment is shown in the figure. Figure 5 The sectional view of part of the structure is shown in the figure.

[0025] Figure 7 The sectional view of the cooling water jacket provided by the present application embodiment is shown in the figure.

[0026] Figure 8 The structure schematic diagram of the hot nozzle body provided by the present application embodiment is shown in the figure. Figure 5 The structure schematic diagram of the hot nozzle body provided by the present application embodiment is shown in the figure.

[0027] Figure 9 The structure schematic diagram of the heat insulation pad provided by the present application embodiment is shown in the figure.

[0028] Explanation of reference signs:

[0029] 1, base; 2, lower mold; 3, socket port; 4, upper mold; 5, ceiling; 6, positioning ring; 7, cooling pipe; 8, electric push rod; 9, push rod column; 10, positioning pin; 11, hot nozzle body; 12, cooling jacket; 13, runner plate; 14, heat insulation pad; 15, inner mold sleeve; 16, cooling device; 17, limiting plate slide; 18, cavity slider; 19, water pipe; 20, limiting block; 21, fixing bolt; 22, main nozzle; 23, gas connector; 24, air cylinder; 25, guide sleeve; 26, center positioning pin; 27, bolt foot; 28, nozzle head; 29, heater; 30, different water channel; 31, heat insulation cap; 32, cavity groove. DETAILED DESCRIPTION

[0030] To make the purposes, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the protection scope of the present disclosure.

[0031] Reference Figures 1-9 The injection mold hot runner for rapid cooling provided by the embodiment of the present utility model, comprising base 1, further comprising: a plurality of support plates are arranged on base 1, a lower mold 2 is arranged on the plurality of support plates, a plurality of grooves are formed on lower mold 2, a demolding assembly is arranged on the plurality of grooves, an upper mold 4 is arranged on the demolding assembly, a socket port 3 is arranged on upper mold 4, a cooling part is arranged in upper mold 4, a ceiling 5 is arranged on upper mold 4, and an injection part is arranged on ceiling 5.

[0032] As a preferred technical solution of the embodiment, the demolding assembly comprises electric push rods 8 arranged in the grooves respectively, a plurality of push rod columns 9 are arranged on upper mold 4, the plurality of electric push rods 8 are respectively engaged with the corresponding push rod columns, a wedge block is arranged on push rod column 9, a compression spring is arranged on the wedge block, the compression spring is arranged in the receiving groove of push rod column 9, the wedge block is retracted into the receiving groove through the pushing of electric push rod 8, thereby connecting electric push rod 8 with push rod column 9, thereby closing upper mold 4 with lower mold 2, facilitating injection molding, a plurality of limiting blocks 20 are arranged on lower mold 2 and upper mold 4 respectively, two corresponding limiting blocks 20 are arranged with a limiting plate slide 17, the mold position can be positioned quickly through the arrangement of limiting block 20 and limiting plate slide 17, facilitating mold shaping, and a cavity slider 18 is arranged on lower mold 2.

[0033] The cooling component includes an inner mold sleeve 15 arranged on the top plate 5, a plurality of cooling devices 16 arranged on the inner mold sleeve 15, two water pipes 19 arranged on each of the plurality of cooling devices 16, a plurality of cooling pipes 7 fixedly communicated with the plurality of upper molds 4, and the other ends of the plurality of water pipes 19 fixedly communicated with the corresponding cooling pipes 7. Through the arrangement of the cooling devices 16 and the water pipes 19, the cooling liquid can flow quickly, the cooling efficiency is improved, the liquid flow in the runner plate is maintained, the liquid supercooling blockage is reduced, and through the arrangement of the heat insulation pad 14, the contact with the top plate 5 is reduced, the contact area is reduced, the heat loss is reduced, and the heat balance of the runner plate is improved.

[0034] As a preferred technical scheme of the embodiment, the injection molding component includes a circular groove arranged on the top plate 5, a positioning ring 6 arranged on the circular groove, a flow distribution assembly arranged on the top plate 5, a limiting block 20 arranged on the top plate 5, a plurality of fixing bolts 21 arranged on the top plate 5, a bolt pad 27 arranged on each of the plurality of fixing bolts 21, a plurality of positioning pins 10 and a center positioning pin 26 arranged on the top plate 5, and the fixing bolt 21 is fixedly connected with the runner plate 13. Through the arrangement of the positioning pin 10 and the center positioning pin 26, the mold position can be quickly positioned, and the mold shaping is facilitated.

[0035] The flow distribution assembly includes the runner plate 13 arranged on the top plate 5, a main nozzle 22 arranged on the runner plate 13, and the main nozzle 22 is engaged with the circular groove, a plurality of air joints 23 arranged on one side of the runner plate 13, a hot nozzle body 11 arranged at the bottom of the runner plate 13, a cooling water jacket 12 arranged at the bottom of the hot nozzle body 11, and a plurality of heat insulation pads 14 arranged at the top of the runner plate 13.

[0036] A guide sleeve 25 is arranged on the needle valve, the guide sleeve 25 is engaged with the heat insulation pad 14, a plurality of small holes are arranged on the heat insulation pad 14, an air cylinder 24 is arranged on each of the plurality of heat insulation pads 14, a valve needle is arranged on the air cylinder 24, the valve needle penetrates through the hot nozzle body 11, the distance between the two diagonal screws is not the same, the small holes on the side of the use side of different sizes are facilitated, and through the arrangement of the small holes, the leakage of the material is prevented, the hole is prevented from being blocked, and the smooth operation of the air cylinder 24 is ensured.

[0037] A heater 29 is arranged in the hot nozzle body 11, a nozzle head 28 is arranged at the bottom of the hot nozzle body 11, a cooling water jacket 12 is arranged at the bottom of the nozzle head 28, a heat insulation cap 31 is arranged on the nozzle head 28, the heat insulation cap 31 is located between the cooling water jacket 12 and the nozzle head 28, cavity grooves 32 are arranged on both sides of the nozzle head 28, the nozzle head 28 is in close contact with the inner hole of the hot nozzle body 11, the heat conduction effect is increased, the air cylinder 24 and the needle valve are ensured to be located on the same vertical line, and the nozzle head 28 is made of high-thermal-conductivity material, so that the heat loss is reduced.

[0038] By the setting of the heater 29, the possibility of clogging of the nozzle head 28 can be reduced, while by the setting of the cooling water jacket 12, the mold can be uniformly sprayed, the setting of the cavity groove 32 can form an air insulation layer to ensure that the heat of the nozzle head 28 is not transmitted to the cooling water jacket 12 as much as possible, the heat insulation cap 31 is made of high-temperature resistant plastic material, which is in contact with the nozzle head 28, and the periphery is in contact with the cooling water jacket 12, which can prevent plastic from entering the air insulation layer, while forming a heat insulation layer between the high temperature of the nozzle head 28 and the cooling water jacket 12, and when the plastic material needs to be replaced in color, it will not form dead material and will not be replaced cleanly.

[0039] The limiting block 20 is fixedly communicated with the flow channel plate 13, the bottom of the base 1 is provided with a rubber pad, the rubber pad is provided with an abrasive grain pattern, the cooling water jacket 12 is provided with a plurality of water channels 30 that are in communication with each other, the water channels 30 are very close to the gate of the nozzle head 28, thereby ensuring the cooling of the gate of the nozzle head 28, reducing the possibility of product defects caused by the gate being too hot, and being able to cool quickly, reducing the cooling time of the mold and improving production efficiency.

[0040] The above only describes certain exemplary embodiments of the utility model in a descriptive manner, without doubt, for ordinary skilled in the art, the described embodiments can be modified in various ways without deviating from the spirit and scope of the utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the utility model.

Claims

1. A rapid-cooling hot runner injection mold, comprising a base (1), characterized in that, Also include: The base (1) is provided with a plurality of support plates, a plurality of support plates are provided with a lower mold (2), a plurality of recesses are provided on the lower mold (2), a plurality of demolding assemblies are provided in the recesses, an upper mold (4) is provided on the demolding assembly, a socket (3) is provided on the upper mold (4), a cooling component is arranged in the upper mold (4), a top plate (5) is provided on the upper mold (4), and an injection molding component is arranged on the top plate (5).

2. The rapid-cooling hot-runner injection mold of claim 1, wherein, The demolding assembly includes an electric push rod (8) arranged in each recess, a plurality of push rod columns (9) are arranged on the upper mold (4), and a plurality of electric push rods (8) are respectively combined with corresponding push rod columns (9), a plurality of limiting blocks (20) are arranged on the lower mold (2) and the upper mold (4), and corresponding two limiting blocks (20) are jointly provided with a limiting plate sliding groove (17), and a cavity sliding block (18) is arranged on the lower mold (2).

3. The rapid-cooling hot-runner injection mold of claim 1, wherein, The cooling component includes an inner mold sleeve (15) arranged on the top plate (5), a plurality of cooling devices (16) are arranged on the inner mold sleeve (15), two water pipes (19) are respectively arranged on a plurality of cooling devices (16), a plurality of cooling pipes (7) are fixedly communicated with a plurality of upper molds (4), and one ends of a plurality of water pipes (19) are fixedly communicated with corresponding cooling pipes (7).

4. The rapid-cooling hot-runner injection mold of claim 1, wherein, The injection molding component includes a circular groove arranged on the top plate (5), a positioning ring (6) is arranged on the circular groove, a flow distribution assembly is arranged on the top plate (5), a limiting block (20) is arranged on the top plate (5), a plurality of fixed bolts (21) are arranged on the top plate (5), a plurality of bolt pads (27) are respectively arranged on a plurality of fixed bolts (21), and a plurality of positioning pins (10) and a center positioning pin (26) are arranged on the top plate (5).

5. The rapid-cooling hot-runner injection mold of claim 4, wherein, The flow distribution assembly includes a flow channel plate (13) fixedly arranged through a plurality of fixed bolts (21), a main nozzle (22) is arranged on the flow channel plate (13), and the main nozzle (22) is combined with the circular groove, a plurality of air joints (23) are arranged on one side of the flow channel plate (13), a hot nozzle body (11) is arranged at the bottom of the flow channel plate (13), a plurality of heat insulation pad blocks (14) are arranged at the top of the flow channel plate (13), a plurality of air cylinders (24) are arranged on a plurality of heat insulation pad blocks (14), a valve needle is arranged on the air cylinder (24), and the valve needle penetrates the hot nozzle body (11).

6. The rapid-cooling hot-runner injection mold of claim 5, wherein, A guide sleeve (25) is arranged on the valve needle, and the guide sleeve (25) is combined and connected with the heat insulation pad block (14), and a plurality of small holes are arranged on the heat insulation pad block (14).

7. The rapid-cooling hot-runner injection mold of claim 5, wherein, A heater (29) is arranged in the hot nozzle body (11), a nozzle head (28) is arranged at the bottom of the hot nozzle body (11), a cooling water jacket (12) is arranged at the bottom of the nozzle head (28), a heat insulation cap (31) is arranged on the nozzle head (28), and the heat insulation cap (31) is located between the cooling water jacket (12) and the nozzle head (28), and cavity grooves (32) are arranged on both sides of the nozzle head (28).

8. The rapid-cooling hot-runner injection mold of claim 7, wherein, The limiting block (20) is fixedly communicated with the flow channel plate (13), the bottom of the base (1) is provided with a rubber pad, the rubber pad is provided with a ground glass line, and the cooling water jacket (12) is provided with the different water channels (30) which are communicated with each other.

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