CN210880743U

CN210880743U - Injection mold is with multistation heat sink that has limit structure

Info

Publication number: CN210880743U
Application number: CN201921675640.7U
Authority: CN
Inventors: 刘硕; 房雲峰; 李悦鹏; 勾义夫
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2019-10-09
Filing date: 2019-10-09
Publication date: 2020-06-30
Anticipated expiration: 2029-10-09

Abstract

The utility model discloses an injection mould is with multistation heat sink that has limit structure, including liquid nitrogen sprue and cover half, the lower extreme of liquid nitrogen sprue is connected with the movable mould bottom plate, and both ends all are provided with hollow guide pin bushing about the movable mould bottom plate, the lower extreme middle part of movable mould bottom plate is provided with public mould, and the lower extreme of public mould is provided with hollow guide arm, the inside of hollow guide arm is provided with the guide hole, and the lower extreme of guide hole is connected with the accumulator, the cover half is fixed in the lower extreme of hollow guide arm, and the inside upper end of cover half is provided with the master model, the inboard middle-end of cover half is provided with the nitrogen discharging mouth. This injection mould is provided with hollow guide pin bushing with multistation heat sink that has limit structure, accurate location when not only can making the mould open and shut like this, the circulation of the control liquid nitrogen that can also make opening and shutting of mould, liquid nitrogen outflow when sealed piece can avoid the mould to open, and skew appears until sealed piece when spacing bead and spacing spout can prevent that the mould from closing.

Description

Injection mold is with multistation heat sink that has limit structure

Technical Field

The utility model relates to a mould cooling technical field specifically is an injection mould is with multistation heat sink that has limit structure.

Background

The cooling of the mold is a key process technology, most of the molding cycle is conducted heat transfer, energy can be transferred from hot melt to the cold mold due to the temperature difference, the plastic skin at the wall edge of the mold effectively isolates the core layer, so that the heat transfer mode is very inefficient, however, the mold cooling is usually noticed until the final stage of the design, the better cooling design can shorten the cycle production time by 20% -30% or less, and improve the labor productivity, so the design of the cooling device of the mold is always a key in the mold production process.

The general cooling structure of mould design radiating effect on market is not good, can only play the problem of cooling effect to mould fixed position, for this reason, we provide a multistation heat sink with limit structure for injection mould.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection mold is with multistation heat sink that has limit structure to the general cooling structure of mould design radiating effect that proposes in solving above-mentioned background is not good, can only play the problem of cooling effect to mould fixed position.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an injection mould is with multistation heat sink that has limit structure, includes liquid nitrogen sprue and cover half, the lower extreme of liquid nitrogen sprue is connected with the movable mould bottom plate, and both ends all are provided with hollow guide pin bushing about the movable mould bottom plate, the lower extreme middle part of movable mould bottom plate is provided with public mould, and the lower extreme of public mould is provided with hollow guide arm, the inside of hollow guide arm is provided with the guide hole, and the lower extreme of guide hole is connected with the accumulator, the cover half is fixed in the lower extreme of hollow guide arm, and the inside upper end of cover half is provided with the master model, the inboard middle-end of cover half is provided.

Preferably, the liquid nitrogen injection port comprises a hollow ejector rod and a liquid nitrogen tank, the end, close to the movable mold bottom plate, of the liquid nitrogen injection port is connected with the hollow ejector rod, and the lower end of the hollow ejector rod is connected with the liquid nitrogen tank.

Preferably, a communicating structure is formed between the hollow mandrils and the liquid nitrogen tank, and the hollow mandrils are distributed at equal intervals.

Preferably, the hollow guide sleeve comprises a sealing block, a limiting convex edge and a limiting sliding groove, the sealing block is arranged inside the hollow guide sleeve, the limiting convex edge is arranged on the outer side of the upper end of the sealing block, and the limiting sliding groove is arranged on the outer side of the limiting convex edge.

Preferably, the shape and structure of the sealing block are matched with those of the hollow guide sleeve, and the shape and structure of the limiting convex edge are matched with those of the limiting sliding groove.

Preferably, the hollow guide rod is of a hollow structure, and a communication structure is formed between the guide hole and the recovery groove.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the multi-station cooling device with the limiting structure for the injection mold is provided with the hollow ejector rod, the hollow ejector rod can be used for exerting enough pressure on a male mold and also can be used as a circulation channel of liquid nitrogen, so that a hollow channel is prevented from being designed on the mold, and the stability of the mold structure is prevented from being influenced;

2. the novel liquid nitrogen circulation channel utilizes the hollow guide sleeve as a liquid nitrogen circulation channel, so that not only can the mould be accurately positioned when being opened and closed, but also the opening and closing of the mould can be controlled to control the circulation of the liquid nitrogen, the sealing block can prevent the liquid nitrogen from flowing out when the mould is opened, and the limiting convex edge and the limiting sliding groove can prevent the sealing block from deviating when the mould is closed;

3. when the hollow guide rod gets into hollow guide pin bushing, sealed piece is by jack-up, and the liquid nitrogen can flow through the accumulator through the guide hole, so not only can cool off the master model, can also be convenient for retrieve the liquid nitrogen, through such design, can make liquid nitrogen circulation and injection mold every, avoid appearing the too big condition of difference in temperature.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the male mold in the bottom view;

fig. 3 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

In the figure: 1. injecting liquid nitrogen into a nozzle; 101. a hollow ejector rod; 102. a liquid nitrogen tank; 2. a movable mold base plate; 3. a hollow guide sleeve; 301. a sealing block; 302. a limiting convex rib; 303. a limiting chute; 4. a male die; 5. a hollow guide rod; 6. a guide hole; 7. a recovery tank; 8. fixing a mold; 9. a female die; 10. a nitrogen outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Referring to fig. 1-3, the present invention provides a technical solution: a multi-station cooling device with a limiting structure for an injection mold comprises a liquid nitrogen injection port 1, a hollow ejector rod 101, a liquid nitrogen groove 102, a movable mold bottom plate 2, a hollow guide sleeve 3, a sealing block 301, a limiting convex edge 302, a limiting sliding groove 303, a male mold 4, a hollow guide rod 5, a guide hole 6, a recovery tank 7, a fixed mold 8, a female mold 9 and a nitrogen discharge port 10, wherein the lower end of the liquid nitrogen injection port 1 is connected with the movable mold bottom plate 2, the left end and the right end of the movable mold bottom plate 2 are respectively provided with the hollow guide sleeve 3, the middle part of the lower end of the movable mold bottom plate 2 is provided with the male mold 4, the lower end of the male mold 4 is provided with the hollow guide rod 5, the guide hole 6 is arranged inside the hollow guide rod 5, the recovery tank 7 is connected with the lower end of the guide hole 6, the fixed mold 8 is fixed at;

the injection mould is provided with the hollow ejector rods 101 by the multi-station cooling device with a limiting structure, the hollow ejector rods 101 can be used for exerting enough pressure on the male mould 4 and can also be used as a circulation channel of liquid nitrogen, so that the design of a hollow channel on the mould is avoided, and the stability of the mould structure is prevented from being influenced;

the hollow guide sleeve 3 comprises a sealing block 301, a limiting convex edge 302 and a limiting sliding groove 303, the sealing block 301 is arranged inside the hollow guide sleeve 3, the limiting convex edge 302 is arranged on the outer side of the upper end of the sealing block 301, the limiting sliding groove 303 is arranged on the outer side of the limiting convex edge 302, the shape structure of the sealing block 301 is matched with that of the hollow guide sleeve 3, and the shape structure of the limiting convex edge 302 is matched with that of the limiting sliding groove 303, the novel hollow guide sleeve 3 is used as a liquid nitrogen circulation channel, so that not only can the mould be accurately positioned when opened and closed, but also the opening and closing of the mould can be controlled to control the circulation of liquid nitrogen, the sealing block 301 can prevent the liquid nitrogen from flowing out when the mould is opened, and the limiting convex edge 302 and the limiting sliding groove;

hollow guide rod 5's inside is cavity column structure, and constitutes the connectivity between guide hole 6 and the accumulator 7, and when hollow guide rod 5 got into hollow guide pin bushing 3, sealed piece 301 was by jack-up, and the liquid nitrogen can flow through accumulator 7 through guide hole 6, so not only can cool off master model 9, can also be convenient for retrieve the liquid nitrogen, through such design, can make liquid nitrogen circulation and injection mold every, avoids appearing the too big condition of difference in temperature.

The working principle is as follows: for the multi-station cooling device with the limiting structure for the injection mold, firstly, liquid nitrogen is injected into the mold through a liquid nitrogen injection port 1, at the moment, the liquid nitrogen flows into a liquid nitrogen groove 102 through a hollow ejector rod 101 and can be uniformly distributed at the upper end of a male mold 4, the male mold 4 can be cooled in all directions, when the mold is closed, a hollow guide rod 5 enters a hollow guide sleeve 3 and jacks up a sealing block 301 for the hollow guide rod 5, the sealing block 301 can vertically move upwards under the action of a limiting convex rib 302 and a limiting sliding groove 303, when the mold is completely closed, the sealing block 301 cannot block the hollow guide sleeve 3, at the moment, the liquid nitrogen enters a fixed mold 8 through a guide hole 6 in the hollow guide rod 5 and flows into a recovery groove 7, so that the liquid nitrogen can be uniformly distributed at the lower end of a female mold 9, the female mold 9 can be cooled in all directions, when the mold is opened, the sealing block 301 resets to continue to block the hollow guide sleeve 3, so that the mold can be cooled when being opened and closed, the cooling forming of a product can be accelerated when the mold is closed, and the using process of the multi-station cooling device with the limiting structure for the whole injection mold is completed.

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

1. The utility model provides an injection mold is with multistation heat sink that has limit structure, includes liquid nitrogen sprue (1) and cover half (8), its characterized in that: the lower extreme of liquid nitrogen sprue (1) is connected with movable mould bottom plate (2), and both ends all are provided with hollow guide pin bushing (3) about movable mould bottom plate (2), the lower extreme middle part of movable mould bottom plate (2) is provided with public mould (4), and the lower extreme of public mould (4) is provided with hollow guide arm (5), the inside of hollow guide arm (5) is provided with guide hole (6), and the lower extreme of guide hole (6) is connected with accumulator (7), cover half (8) are fixed in the lower extreme of hollow guide arm (5), and the inside upper end of cover half (8) is provided with master model (9), the inboard middle-end of cover half (8) is provided with row nitrogen mouth (10).

2. The multi-station cooling device with the limiting structure for the injection mold according to claim 1, wherein: the liquid nitrogen injection port (1) comprises a hollow ejector rod (101) and a liquid nitrogen tank (102), one end, close to the movable mold bottom plate (2), of the liquid nitrogen injection port (1) is connected with the hollow ejector rod (101), and the lower end of the hollow ejector rod (101) is connected with the liquid nitrogen tank (102).

3. The multi-station cooling device with the limiting structure for the injection mold according to claim 2, wherein: the hollow ejector rods (101) and the liquid nitrogen tank (102) form a communication structure, and the hollow ejector rods (101) are distributed at equal intervals.

4. The multi-station cooling device with the limiting structure for the injection mold according to claim 1, wherein: the hollow guide sleeve (3) comprises a sealing block (301), a limiting convex rib (302) and a limiting sliding groove (303), the sealing block (301) is arranged inside the hollow guide sleeve (3), the limiting convex rib (302) is arranged on the outer side of the upper end of the sealing block (301), and the limiting sliding groove (303) is arranged on the outer side of the limiting convex rib (302).

5. The multi-station cooling device with the limiting structure for the injection mold according to claim 4, wherein: the shape structure of the sealing block (301) is matched with that of the hollow guide sleeve (3), and the shape structure of the limiting convex rib (302) is matched with that of the limiting sliding groove (303).

6. The multi-station cooling device with the limiting structure for the injection mold according to claim 1, wherein: the hollow guide rod (5) is of a hollow structure, and a communicating structure is formed between the guide hole (6) and the recovery groove (7).