CN216127680U

CN216127680U - Quick heat-conducting injection mold

Info

Publication number: CN216127680U
Application number: CN202121842705.XU
Authority: CN
Inventors: 顾继雄; 葛树旺; 陈楠
Original assignee: Tri-Comms Suzhou Ltd
Current assignee: Tri-Comms Suzhou Ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-03-25
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses an injection mold capable of conducting heat quickly, and aims at solving the problems of complex structure, high processing difficulty and high manufacturing cost of a cooling water channel, the injection mold comprises a movable mold plate, a fixed mold plate and a fixed mold mounting plate, wherein a plurality of first oil paths are arranged inside the fixed mold mounting plate, a plurality of second oil paths are arranged inside the fixed mold plate, the first oil paths are communicated with the second oil paths, and the side surface of the fixed mold mounting plate is provided with an oil outlet and an oil inlet of the first oil paths; the inside of second oil circuit is equipped with the guide board, and the length direction setting along the second oil circuit of guide board leaves the clearance between the terminal surface of the one end of keeping away from first oil circuit of guide board and second oil circuit. Compare in the oil circuit of U-shaped structure, the circulation of coolant oil in the fixed die plate can be realized to the guide board in the second oil circuit, simple structure, and the manufacturing degree of difficulty is low, does not influence the precision of making the mould, low in manufacturing cost.

Description

Quick heat-conducting injection mold

Technical Field

The utility model relates to the technical field of molds, in particular to an injection mold capable of rapidly conducting heat.

Background

The injection mold is a mold for injection molding. Injection molding is a molding method of injection and molding, and the process is that molten plastic is injected into an injection mold under high pressure at a certain temperature, and a molded product is finally obtained after cooling and solidification. After the injection molding of the injection mold is finished, the molten plastic can be fixed and molded due to the fact that the temperature of the molten plastic needs to be reduced.

At present, chinese patent with publication number CN209320240U discloses an injection mold heat dissipation device, which comprises a fixed mold plate, a movable mold plate, a fixed mold base plate, a movable mold base plate and a fixed plate, wherein a first heat dissipation channel is arranged inside the fixed mold plate, the first heat dissipation channels are provided with a plurality of heat dissipation channels, the top of each first heat dissipation channel is communicated with and connected with a second heat dissipation channel, the outlet of each second heat dissipation channel is arranged at the top of the fixed mold plate, and a water inlet is arranged below the first heat dissipation channel at the front side of the fixed mold plate.

The cooling water channel with the U-shaped structure is arranged on the heat dissipation device, so that the contact area between the cooling water channel and the fixed die plate is increased, more heat can be taken away, the cooling water channel is complex in structure and high in processing difficulty, the requirement of high injection molding precision of an optical element cannot be met easily by a common processing method, and the manufacturing cost of a die is increased.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the injection mold capable of rapidly conducting heat, and the injection mold has the advantages of simple structure, easiness in processing and manufacturing and good heat dissipation effect.

In order to achieve the purpose, the utility model provides the following technical scheme:

an injection mold capable of conducting heat quickly comprises a movable mold plate, a fixed mold plate and a fixed mold mounting plate, wherein a plurality of first oil paths are arranged inside the fixed mold mounting plate, a plurality of second oil paths are arranged inside the fixed mold plate, the first oil paths are communicated with the second oil paths, and an oil outlet and an oil inlet of the first oil paths are formed in the side surface of the fixed mold mounting plate; the inside of second oil circuit is equipped with the guide board, the length direction setting along the second oil circuit of guide board, leave the clearance between the terminal surface of the one end of keeping away from first oil circuit of guide board and second oil circuit.

By adopting the technical scheme, the cooling oil is filled into the oil inlet of the first oil way of the fixed die mounting plate, the cooling oil flows into the second oil way and is blocked by the guide plate, the guide plate arranged along the length direction of the second oil way guides the cooling oil into the second oil way, the cooling oil flows through the gap between the end surface of the guide plate and the end surface of the second oil way and flows to the first oil way from the other plane of the guide plate, and the cooling oil is ensured to flow into the second oil way and then flow out of the second oil way, then flow into the first oil way and finally flow out of the die from the oil outlet. The guide plate makes the second runner have mobile cooling oil all the time to take away the heat in the fixed die plate, make the fixed die plate cooling, thereby realize injection moulding product's cooling. Compare in the oil circuit of U-shaped structure, the circulation of coolant oil in the fixed die plate can be realized to the guide board in the second oil circuit, simple structure, and the manufacturing degree of difficulty is low, does not influence the precision of making the mould.

Further, the one end of guide board far away from first oil circuit is equipped with the opening.

By adopting the technical scheme, the gap between the end face of the guide plate and the end face of the second flow channel is increased by the notch on the guide plate, so that the cooling oil smoothly flows back to the first flow channel from the second flow channel, the cooling oil smoothly flows in the first flow channel and the second flow channel, the flowing cooling oil is ensured to fully contact with the inner walls of the second flow channel as much as possible, and the cooling efficiency of a die and a product is ensured.

Furthermore, the end face of the guide plate, which is close to the first oil path, is tightly attached to the inner wall of the first oil path.

By adopting the technical scheme, the guide plate penetrates through the first oil way along the cross section of the first oil way and is tightly attached to the inner wall of the first oil way, no gap is formed between the end face of the guide plate and the inner wall of the first oil way, cooling oil flowing to the guide plate is effectively guided to the second oil way, all the cooling oil enters the second flow way from the first flow way, the flow of the cooling oil in the fixed die plate is increased, and the heat conduction efficiency is improved.

Further, both side surfaces of the guide plate are in interference fit with the inner wall of the second oil way.

Adopt above-mentioned technical scheme, the coolant oil is guided to the second runner by the guide board after first runner, makes the flow direction of coolant oil change, and according to effort and reaction force's principle, the coolant oil can give the guide board towards the impact force of keeping away from the direction of change, and interference fit makes the guide board firmly fix in the second runner between guide board and the second oil circuit, resists the reaction force that the coolant oil changes flow direction, guarantees that the coolant liquid flows into the second runner from first runner.

Further, the material of the guide plate is copper alloy.

By adopting the technical scheme, the copper alloy has softer characteristic and certain deformation recovery capability compared with alloy steel, so that when the guide plate in interference fit with the second flow channel is installed in the second flow channel, the softer guide plate generates small deformation and is easier to install, and the guide plate recovers deformation and is tightly clamped in the second flow channel. The guide plate is firmly fixed.

Furthermore, one end, far away from the parting surface, of the mold core extends into the first oil way.

By adopting the technical scheme, the mold core directly contacts with a product, which is one of the hottest parts in the mold, and extends into the first oil way, so that the mold core contacts with flowing cooling oil and exchanges heat, the mold core is cooled, and the product and the mold are cooled. Compared with a fixed die plate, the temperature difference between the die core and the cooling oil is larger, the heat exchange efficiency is higher, and the cooling of the product and the die is accelerated.

Further, a gap is reserved between the end face, close to the first oil path, of the mold core and the inner wall of the first oil path.

By adopting the technical scheme, compared with the mode that the end face of the mold core is in close contact with the inner wall of the first oil way, a gap is reserved between the end face of the mold core and the inner wall of the first oil way, so that cooling oil can smoothly flow in the first oil way, the integral cooling of the mold is ensured, in addition, the end face of the mold core can contact the flowing cooling oil, the heat exchange area is increased, and the cooling is accelerated.

Further, the material of the mold core is beryllium copper alloy.

By adopting the technical scheme, the beryllium copper alloy has high strength and hardness, ensures the injection molding precision, is wear-resistant and corrosion-resistant, cannot reduce the injection molding precision after being used for a long time, has long service life, more importantly has higher heat conductivity, leads the heat of a product into cooling oil more quickly, and improves the cooling efficiency.

In conclusion, the utility model has the following beneficial effects:

1. the guide plate increases the contact area between the cooling oil in the second oil way and the fixed die plate, namely the heat exchange area, takes away more heat, accelerates the cooling of the product and improves the heat dissipation efficiency;

2. compare in the fixed die plate, the difference in temperature between mold core and the cooling oil is bigger, and the one end of mold core stretches into first runner, makes mold core and cooling oil contact, and the efficiency of heat exchange is higher for the cooling of product and mould.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a sectional view of the mold core of the present embodiment;

fig. 3 is a sectional view of the first oil passage of the present embodiment;

fig. 4 is a sectional view of the guide plate of the present embodiment.

In the figure: 1. fixing a template; 2. a fixed die mounting plate; 3. moving the template; 4. a first mounting plate of the movable mold; 5. a second movable mold mounting plate; 6. a first oil passage; 61. an oil inlet; 62. an oil outlet; 7. a second oil passage; 8. a guide plate; 9. a mold core; 10. a bolt; 11. a slide plate; 12. a high-temperature sealing ring; 13. an exhaust passage; 14. injection molding a channel; 15. forming a cavity; 16. and a push rod.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

An injection mold capable of conducting heat rapidly, which is shown in figure 2, comprises a movable mold plate 3, a fixed mold plate 1, a fixed mold mounting plate 2, a movable mold first mounting plate 4 and a movable mold second mounting plate 5 which are all cuboid-shaped. The fixed die mounting plate 2 is fixedly connected with the fixed die plate 1, one side of the fixed die plate 1, which is far away from the fixed die mounting plate 2, is detachably connected with the movable die plate 3, one side of the movable die plate 3, which is far away from the fixed die plate 1, is fixedly connected with the first movable die mounting plate 4, and one side of the first movable die mounting plate 4, which is far away from the movable die plate 3, is fixedly connected with the second movable die mounting plate 5.

Referring to fig. 2, the parting plane of the mold, i.e., the contact surface of the movable platen 3 and the fixed platen 1. An exhaust channel 13 penetrates through the movable mould plate 3 and the movable mould first mounting plate 4, an injection channel 14 penetrates through the fixed mould plate 1 and the fixed mould mounting plate 2, and the injection channel 14 is communicated with the exhaust channel 13.

Referring to fig. 3, two first oil passages 6 having an L-shaped passage shape are provided inside the fixed mold mounting plate 2, and the cross sections of the first oil passages 6 along the passage are parallel to the parting plane. An oil outlet 62 and an oil inlet 61 of the first oil path 6 are arranged on the side surface of the fixed die mounting plate 2.

Referring to fig. 2 and 3, two second oil passages 7 are provided inside the fixed die plate 1, and both the two second oil passages 7 are perpendicular to the parting plane. One ends of the two first oil passages 6 far away from the oil outlet 62 and the oil inlet 61 are respectively communicated with the two second oil passages 7.

Referring to fig. 2 and 4, a guide plate 8 is arranged inside the second oil path 7, the guide plate 8 is arranged along the length direction of the path of the second oil path 7, a gap is left between the end surface of the guide plate 8 far away from the first oil path 6 and the end surface of the second oil path 7, and the other end surface of the guide plate 8 is tightly attached to the inner wall of the first oil path 6. One end of the guide plate 8, which is far away from the first oil path 6, is provided with a notch. Both side surfaces of the guide plate 8 are in interference fit with the inner wall of the second oil passage 7. The material of the guiding plate 8 is a copper alloy.

Referring to fig. 2, four mold cores 9 are fixedly arranged inside the fixed mold plate 1, the length direction of the mold cores 9 is perpendicular to the parting plane, and one end, far away from the parting plane, of each mold core 9 extends into the first oil way 6 and leaves a gap with the inner wall of the first oil way 6. The material of the mold core 9 is beryllium copper alloy.

Referring to fig. 2, one side fixedly connected with movable mould second mounting panel 5 of keeping away from movable mould 3 of movable mould first mounting panel 4, the middle part of movable mould second mounting panel 5 is equipped with the cavity of sliding, is equipped with rectangular slide 11 in the cavity of sliding, and slide 11 slides along the direction of perpendicular to die joint and connects in the cavity of sliding.

Referring to fig. 2, four molding cavities 15 are arranged between the movable mold plate 3 and the fixed mold plate 1, three ejector rods 16 are respectively arranged on one sides of the four molding cavities 15 close to the movable mold plate 3, and through holes for the ejector rods 16 to slide are arranged on the movable mold plate 3 and the movable mold first mounting plate 4. The end of the ram 16 remote from the mold cavity 15 is fixedly connected to the slide plate 11. When the sliding plate 11 slides, the ejector rod 16 is driven to slide in the movable mould plate 3 and the movable mould first mounting plate 4.

Referring to fig. 2, a shaft shoulder is arranged at one end, close to the fixed die mounting plate 2, of the die core 9, a concave hole for the shaft shoulder of the die core 9 to pass through is formed in one side, close to the fixed die mounting plate 2, of the fixed die plate 1, a high-temperature sealing ring 12 is fixedly arranged between the end surface of the shaft shoulder and the bottom surface of the concave hole, and the high-temperature sealing ring 12 blocks cooling oil outside the fixed die plate 1. A bolt 10 is fixedly arranged between the shaft shoulder of the mold core 9 and the fixed mold plate 1, and a through hole for the bolt 10 to pass through is arranged between the shaft shoulder of the mold core 9 and the fixed mold plate 1, so that the mold core 9 is more firmly fixed on the fixed mold plate 1.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The utility model provides a quick heat conduction's injection mold, includes movable mould board (3), fixed die plate (1) and cover half mounting panel (2), its characterized in that: a plurality of first oil passages (6) are arranged in the fixed die mounting plate (2), a plurality of second oil passages (7) are arranged in the fixed die plate (1), the first oil passages (6) are communicated with the second oil passages (7), and an oil outlet (62) and an oil inlet (61) of the first oil passages (6) are arranged on the side surface of the fixed die mounting plate (2); the inside of second oil circuit (7) is equipped with guide board (8), the length direction setting along second oil circuit (7) of guide board (8), leave the clearance between the terminal surface of the one end of keeping away from first oil circuit (6) of guide board (8) and second oil circuit (7).

2. The rapid thermal conductivity injection mold of claim 1, wherein: and one end of the guide plate (8) far away from the first oil way (6) is provided with a notch.

3. The rapid thermal conductivity injection mold of claim 1, wherein: the end face of the guide plate (8) close to the first oil way (6) is tightly attached to the inner wall of the first oil way (6).

4. The rapid thermal conductivity injection mold of claim 1, wherein: and two side surfaces of the guide plate (8) are in interference fit with the inner wall of the second oil way (7).

5. The rapid thermal conductivity injection mold of claim 4, wherein: the guide plate (8) is made of copper alloy.

6. The rapid thermal conductivity injection mold of claim 1, wherein: one end, far away from the parting surface, of the mold core (9) extends into the first oil way (6).

7. The rapid thermal conductivity injection mold of claim 6, wherein: and a gap is reserved between the end surface of the mold core (9) close to the first oil path (6) and the inner wall of the first oil path (6).

8. The rapid thermal conductivity injection mold of claim 7, wherein: the mold core (9) is made of beryllium copper alloy.